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The Role of Genotype-Environment Interaction in Adaptability
Item type: Journal Article • Journal: South African Forestry Journal • Authors: P.J. Robbertse --- D.R. De Wet Forestry Research Centre,The over sites ratio of clonal (familial) genotype-environment interaction (GEI) variance to mean trial variance determines the regression that is used to predict adaptability. Genotypic and environmental variances do not contribute significantly to this regression. Genotype x environment interaction effects... -
Pine Provenance Research in South Africa: Promises and Problems
Item type: Journal Article • Journal: South African Forestry Journal • Authors: E.R. Falkenhagen --- ,Provenance research really started with the work of H.L. Duhamel Du Monceau on Pinus sylvestris in the eighteenth century. In South Africa the first properly designed provenance trials were established between 1934 and 1936 with the testing of five races... -
The Genetic Control of Ring Width, Wood Density and Tracheid Length in the Juvenile Core of Pinus patula
Item type: Journal Article • Journal: South African Forestry Journal • Authors: R.D. Barnes --- Forest Research Centre, Zimbabwe J.S. Birks --- , United Kingdom G. Battle --- Forest Research Centre, Zimbabwe L.J. Mullin --- Forest Research Centre, ZimbabweControlled crosses were made between six Pinus patula Schiede & Deppe plus trees selected in plantations. Six full-sib families and two commercial checks were planted in randomised complete block thrice-replicated progeny tests at two sites in Zimbabwe. At 7,5 years,... -
Characteristics of fire behaviour in the montane grasslands of natal
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: TheresaM. Everson --- Department of Environment Affairs, Directorate of Forestry, F.R. Smith --- Department of Environment Affairs, Directorate of Forestry, C.S. Everson --- Department of Environment Affairs, Directorate of Forestry,Fire behaviour characteristics were investigated in the montane grasslands of the Natal Drakensberg. The behaviour of experimental fires was measured together with the accompanying biotic and abiotic conditions. Estimates of heat yield, mass of available fuel and forward rate of... -
Influence of habitat differences on the ecological grouping of grass species on a grazing gradient
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: FranciP. Janse van Rensburg --- Department of Agriculture & Water Supply, Republic of South Africa O.J.H. Bosch --- Department of Botany, Republic of South AfricaThe ecological grouping (Decreaser and Increaser groups) of individual species was determined on two topographical units in the Highland Sourveld of the Orange Free State. For this purpose gradients were selected, giving special attention to fence‐line comparisons, vegetation at different... -
An evaluation of the empirical basis for grazing management recommendations for rangeland in southern Africa
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: P.J. O'Reagain --- Department of Agricultural Development (Eastern Cape Region), Republic of South Africa J.R. Turner --- Department of Grassland Science, Republic of South AfricaAnalysis of over 50 grazing experiments conducted in southern Africa does not support certain management recommendations. Furthermore, the conclusions of some experiments are questionable owing to poor experimental design or confirmation bias. Based on available evidence, it was concluded that... -
Germination of fresh seed of thirty Cenchrus ciliaris ecotypes as influenced by seed treatment
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: P.S. Venter --- Division of Grassland Science, Department of Plant Production, Republic of South Africa N.F.G. Rethman --- Division of Grassland Science, Department of Plant Production, Republic of South AfricaGermination tests were carried out with fresh seed of 30 ecotypes of Cenchrus ciliaris produced under uniform conditions. Untreated seeds were compared with washed and shelled seeds. The percentage germination of untreated seed varied between 0% and 48%, with an... -
A field evaluation of the differential tolerance to soil acidity of forty-eight South African maize cultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Ana Paula Mendes --- Summer grain Sub-Centre, M. P.W. Farina --- Summer grain Sub-Centre, P. Channon --- Summer grain Sub-Centre, Marie Smith --- Biometry Section, Directorate of Biometrie and Datametric Services,A field experiment was conducted on a Normandien clay loam (Plinthic Paleudult) to compare the acid tolerance of 48 commercially grown maize (Zea mays L.) cultivars. Cultivars were compared in terms of grain yield, plant height and leaf Al content... -
The nature of genotype × environment interactions for yield in wheat extension trials in the Winter Rainfall Region
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G.F. Marais --- ,The necessity to subdivide the wheat producing soils of the Winter Rainfall Region for extension purposes, was considered. Use was made of correlations, interaction variance components and pattern analysis procedures to reflect on the possible existence of sub-environments with different... -
Genotipe × omgewingsinteraksie by winterkoring in die Oranje-Vrystaat
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.S. van Deventer --- Departement Genetika, Republiek van Suid-AfrikaGesamentlike variansieanalises is uitgevoer op opbrengs, hektolitermassa en proteïeninhoud data verkry uit koring-evaluasieproewe wat in die Oranje-Vrystaat gedoen is. Die gebalanseerde datastelle het sewe winterkoringgenotipes, ingesluit wat op elk van 14 lokaliteite oor 'n periode van drie jaar geplant was... -
Genotipe—omgewingsinteraksie by sojabone
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: T. E.M. Odendaal --- , Republiek van Suid-Afrika C.S. van Deventer --- Departement Genetika, Republiek van Suid-Afrika'n Gekombineerde variansie-ontleding is uitgevoer op die saadopbrengste en proteïenpersentasies van die saad van 14 sojaboonkultivars wat op nege verskillende lokaliteite oor 3 jaar geëvalueer is. Variansiekomponente geassosieer met elke bron van variasie is beraam. Die verkreë resultate en implikasies... -
Comparison of cotton (Gossypium hirsutum L.) yield and fibre properties over locations and seasons
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.G. van Heerden --- , Republic of South Africa W.H. van Staden --- , Republic of South Africa G. Vink --- , Republic of South Africa H. van Ark --- , Republic of South AfricaThe cotton breeding program in the Republic of South Africa is conducted at the localities Loskop, Upington and Vaalharts. Preliminary results from breeding trials indicated that a finer but more mature fibre could be produced at Vaalharts as compared to... -
An analysis of yield components of Lupinus albus L.
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. A.M. van der Mey --- , Republic of South Africa J. Middel --- , Republic of South Africa Amelia Me Donald --- , Republic of South AfricaLupinus albus or sweet white lupin is a crop producing its seed yield in succeeding orders of racemes on the plant. All combinations of 18 yield components of five cultivars grown in 11 environments were correlated with each other. An... -
The success of the AMMI model in predicting lucerne yields for cultivars with differing dormancy characteristics
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: MarieF. Smith --- , Republic of South Africa A. Smith --- , Republic of South AfricaThe AMMI model, which incorporates both additive and multiplicative components into an integrated, powerful, least squares analysis, is used for the analysis of cultivar trials at different localities. These trials are a major experimental component in crop production and plant... -
AMMI analysis of potato cultivar yield trials
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P.J. Steyn --- , Republic of South Africa A.F. Visser --- , Republic of South Africa MarieF. Smith --- , Republic of South Africa J.L. Schoeman --- , Republic of South AfricaPotatoes, Solanum tuberosum (L), are cultivated in South Africa under a variety of different climates and seasons. The wide environmental variation encountered and the confirmed occurrence of genotype-environmental interaction necessitates the use of criteria, other than averages, in the evaluation... -
Multivariate assessment of environmental effects on hard red winter wheat. I. Principal-components analysis of yield and bread-making characteristics
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D. van Lili --- Small Grain Centre, Republic of South Africa J.L. Purchase --- Small Grain Centre, Republic of South Africa MarieF. Smith --- , Republic of South Africa G.A. Agenbag --- Department of Agronomy and Pastures, Republic of South Africa O.T. de Villiers --- Department of Agronomy and Pastures, Republic of South AfricaThe attributes of yield and bread-making quality of winter wheats produced in the Free State are subject to environmental effects. The result is a supply to the baking industry of flour of inconsistent quality, which in turn is detrimental to... -
Multivariate assessment of environmental effects on hard red winter wheat. II. Canonical correlation and canonical variate analysis of yield, biochemical and bread-making characteristics
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D. van Lili --- Small Grain Centre, Republic of South Africa J.L. Purchase --- Small Grain Centre, Republic of South Africa MarieF. Smith --- , Republic of South Africa G.A. Agenbag --- Department of Agronomy and Pastures, Republic of South Africa O.T. De Villiers --- Department of Botany, Republic of South AfricaThe inconsistent production of winter wheat with acceptable bread-making quality in the Free State reduces the commercial value of the wheat crop. In the second part of this study, canonical correlation analysis was used to determine to what extent variation... -
Determination of the preharvest sprouting resistance of South African winter wheat (Triticum aestivum L.) cultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Annelie Barnard --- , Republic of South Africa J.L. Purchase --- , Republic of South Africa MarieF. Smith --- , Republic of South Africa D. van Lill --- Department of Food, Clothing and Hotel Management, Technicon Free State, Republic of South AfricaPreharvest sprouting significantly reduces the quality of the South African wheat crop. This study classified the preharvest sprouting resistance of 17 South African winter wheat cultivars sampled over a range of typical winter wheat growth environments. Sampling was performed under... -
Interaction between cultivar and soil fertility on grain yield, yield components and grain nitrogen content of wheat
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: LewisA. Metho --- Department of Plant Production and Soil Science, South Africa P.S. Hammes --- Department of Plant Production and Soil Science, South Africa J.M. de Beer --- Department of Plant Production and Soil Science, South Africa H.T. Groeneveld --- Department of Statistics, South AfricaThe effect of soil nutrient status on the performance of four wheat cultivars was studied in a long-term field experiment at the University of Pretoria. The objective was to quantify the effect of soil nutrient status on yield, yield components... -
A quality assurance strategy for wheat (Triticum aestivum L.) where growth environment predominates
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D. van Lill --- Faculty of Applied Sciences, Technikon Free State, South Africa MarieF. Smith --- Department of Statistics, South AfricaThe variation in the processing quality of South African winter wheat cultivars over growth environments is detrimental to its market value. Variation in protein content has previously been identified as a primary contributor to this variation and should therefore be... -
Sources of variation for yield, protein content and hectolitre mass of spring wheat (Triticum aestivum L.) cultivars of the Western and Southern Cape
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.M. Nel --- Department of Agronomy and Pastures, Republic of South Africa G.A. Agenbag --- Department of Agronomy and Pastures, Republic of South Africa J.L. Purchase --- , Republic of South AfricaIn the Western and Southern Cape the quality of wheat varies annually due to variable climatic conditions. This holds a commercial risk to the milling and baking industries in delivering the refined products to their respective clients. It is, therefore,... -
A comparison of three methods of soil water content determination
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: K.M. Little --- , Republic of South Africa B. Metelerkamp --- , New Zealand C.W. Smith --- , Republic of South AfricaIn forestry the need to manage plantations on a sustainable site-specific basis requires the understanding and management of any growth limiting factors. Soil water regime is a factor considered to be of prime importance with respect to explaining differences in... -
Pathotypes of Puccinia graminis f. sp. tritici detected in South Africa during 1991–1997
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: W. H.P. Boshoff --- , Republic of South Africa B.D. van Niekerk --- , Republic of South Africa Z.A. Pretorius --- Department of Plant Pathology, Republic of South AfricaA stem rust survey is conducted annually in the major bread wheat and triticale producing areas of South Africa to monitor pathogenic variability in Puccinia graminis f. sp. tritici. During 1991 to 1996 the incidence of stem rust on susceptible... -
Genotype × environment interaction of winter wheat (Triticum aestivum L.) in South Africa: I. AMMI analysis of yield performance
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.L. Purchase --- , Republic of South Africa Hesta Hatting --- , Republic of South Africa C.S. van Deventer --- Department of Plant Breeding, Republic of South AfricaThirteen winter and intermediate type bread wheat cultivars were evaluated under dryland conditions over a four year period from 1991 to 1994 and over 120 environments in the Free State province of South Africa. The Additive Main Effects and Multiplicative... -
Genotype × environment interaction of winter wheat (Triticum aestivum L.) in South Africa: II. Stability analysis of yield performance
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.L. Purchase --- , Republic of South Africa Hesta Hatting --- , Republic of South Africa C.S. van Deventer --- Department of Plant Breeding, Republic of South AfricaThirteen winter and intermediate type bread wheat cultivars were evaluated for yield stability under dryland conditions over a four year period from 1991 to 1994 and over a total of 120 environments in the Western, Central and Eastern Free State... -
An explanation of genotype by environment interaction for maize in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.C. Laubscher --- , Republic of South Africa C.Z. Roux --- Department of Genetics, Republic of South Africa J. M.P. Geerthsen --- Department of Genetics, Republic of South AfricaThe causes of genotype interaction with the environment was investigated using AMMI (Additive Main Effects and Multiplicative Interaction) analysis. AMMI quantified environments by means of E_IPCA1 (first principal component analysis for environment) such that it was highly significantly correlated (r... -
Identification of Thinopyrum distichum chromosomes responsible for its salt tolerance
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G.F. Marais --- Department of Genetics, South Africa A.S. Marais --- Department of Genetics, South AfricaA Thinopyrum distichuml 4x rye (Secale cereale) hybrid with genomes J1 dJ2 dRR was pollinated with diploid rye and mostly yielded F1 offspring with 21 chromosomes (two complete rye genomes and seven Thinopyrum chromosomes). Apparently, the closely related homoeologous chromosomes... -
Ultrastructural changes caused by metazachlor on maize seedling leaves and root cells
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L. Kanyomeka --- Department of Plant Production and Soil Science, Faculty of Biological and Agricultural Sciences, South Africa C.F. Reinhardt --- Department of Plant Production and Soil Science, Faculty of Biological and Agricultural Sciences, South AfricaMaize (Zea mays L.) genotypes exhibit differential tolerance to metazachlor (2-chloro-N-(pyrazol-1-ylme-thyl)acet-2′-6′-xylidide) in the greenhouse and in the field. However, since little is known on the effect of metazachlor on the ultrastructure of maize seedlings, laboratory experiments were conducted to determine... -
Suitability of two types of plastic covering on mini-tunnels for paprika seedling production in warm areas
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. Allemann --- , Republic of South Africa J. Viljoen --- , Republic of South Africa J.G. Niederwieser --- , Republic of South AfricaA trial was conducted at the ARC-Roodeplaat Vegetable and Ornamental Plant Institute to determine the difference between the two types of plastic (clear and opaque) used as covering for mini-tunnels during paprika (Capsicum anuum L.) seedling production. Two cultivars (PapriKing... -
Stability analysis of grain yield of tef (Eragrostis tef) using the mixed model approach
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L.D. Kassa --- Discipline of Statistics & Operations Research, Republic of South Africa MarieF. Smith --- Biometry Unit, Republic of South Africa H. Fufa --- , EthiopiaMulti-environment trials are usually used to assess the grain yield stability of genotypes. Most of the common stability measures such as Finlay and Wilkinson (1963), Eberhart and Russell (1966) and Shukla (1972), can be accommodated by a linear mixed model... -
Genotype × environment interaction for root yield of elite sweet potato (Ipomoea batatas (L) lam.) genotypes
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: T. Tekalign --- Department of Plant Sciences, EthiopiaA study was conducted to determine stability of root yield, and the nature and magnitude of genotype × environment interaction in sweet potato using six recently introduced and one farmers' cultivar, which were grown at four locations for three consecutive... -
Additive mean effects and multiplicative interaction analysis of maize yield trials in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: S. H. Ma’ali --- , South AfricaThirty five maize hybrids were evaluated over 98 environments for genotype x environment interaction (GEI) and yield stability under dry land conditions during the 2003 to 2006 seasons in the eastern and western maize production regions of South Africa. The... -
Occurrence and pathogenicity of Puccinia triticina on wheat in South Africa during 2007
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Tarekegn Terefe --- , South Africa I. Paul --- , South Africa J. Mebalo --- , South Africa K. Naicker --- , South Africa L. Meyer --- , South AfricaA survey was conducted during 2007 to determine the occurrence and pathogenicity of Puccinia triticina Eriks., the cause of wheat leaf rust, in South Africa. Leaf rust was widely observed in the wheat growing areas of the Western Cape but... -
Physiological traits associated with drought tolerance in bread wheat (Triticum aestivum L.) under tropical conditions
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P.K. Kimurto --- Department of Crop and Soil Sciences, Kenya J.B.O. Ogola --- Department of Plant Production, South Africa M.G. Kinyua --- Department of Crop Science and Biotechnology, Kenya J.M. Macharia --- Department of Botany, Kenya P.N. Njau --- , KenyaAlthough it is generally accepted that drought tolerance is a critical agronomic trait, efficient and predictable improvement in drought tolerance in bread wheat (Triticum aestivum L.), in varying drought stress conditions, has not been fully achieved. This study aimed at... -
Effect of microencapsulated alachlor on South African sunflower (Helianthus annuus L.) cultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. Allemann --- Department of Soil, Crop and Climate Sciences, South Africa G.M. Ceronio --- Department of Soil, Crop and Climate Sciences, South AfricaThe microencapsulated formulation of alachlor is becoming increasingly popular for use on sunflower in South Africa, where it is registered for use at a rate of 1.54 to 1.92 kg ai ha−1. Some injury symptoms, apparently herbicide induced, have been... -
Targeting of early to intermediate maize hybrids for yield performanceand yield stability using SREG model
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P.S. Setimela --- , Zimbabwe J. Crossa --- CIMMYT Km, D.F Mexico M. Bänziger --- CIMMYT Km, D.F MexicoThe effectiveness of targeting and predicting maize (Zea mays.L) hybrid performance is difficult when the magnitude of genotype x environment (GE) interaction and yield prediction cannot be interpreted and is only based on genotypes (G) and GE means. The traditional... -
Optimum replications and crop-years for sugarcane genotype trials at Dwangwa Sugar Estate in Malawi
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: MM Zhou --- , South Africa A Chihana --- , Malawi RC Parfitt --- , South AfricaThe ability to detect significant differences among genotypes in trials depends on the variance associated with the means. Dwangwa Sugar Estate, Malawi, imports genotypes from the South African Sugarcane Research Institute (SASRI) to test for possible commercial release. The objective... -
Morphological characters and ascorbic acid content of an elite genotype of Corchorus olitorius: the influence of moisture stress
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: AnofiOT Ashafa --- Department of Plant Sciences, South Africa AbidemiA Abass --- Department of Botany, Nigeria Titilola Osinaike --- Department of Botany, Nigeria FrancisB Lewu --- Agriculture Department, South AfricaMoisture stress can be deleterious to physicochemical properties of crop species to a varying degree. The influence of moisture stress on the ascorbic acid content in the leaf and morphological characters of an elite genotype of Corchorus olitorius were tested... -
The relation between canopy spread cover and the aboveground available phytomass of Nama Karoo subshrubs and grasses
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: PCV du ToitThe canopy spread cover of Karoo bushes and grasses in the Nama Karoo was measured and related to the aboveground phytomass available to the grazing animal. A correlation coefficient of r = 0.7456, calculated for Karoo bushes, indicates that this... -
The influence of various types and frequencies of rest on the production and condition of sourveld grazed by sheep or cattle. 1. Proportional species composition
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: KP KirkmanData collected between 1992/93 and 1996/97 from a long-term grazing trial were used to investigate the interaction between grazing animals and veld grass. Comparisons were made, firstly between the impacts of sheep and cattle grazing, and secondly between various types... -
The influence of various types and frequencies of rest on the production and condition of sourveld grazed by sheep or cattle. 2. Vigour
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: KP KirkmanTreatments involving a full growing season rest in alternate years, half a growing season rest (late season) in alternate years and no rest were applied to veld grazed by sheep or cattle at similar stocking rates. Residual effects of the... -
Ecosystem development on seven rehabilitated discard dumps
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: TL Morgenthal L Van RensburgTo successfully rehabilitate disturbed land the initial input of resources and the maintenance afterwards must be an integrated process. The achievement of a good vegetation basal, crown and organic ground cover can be regarded as one of the central aims... -
Using faecal profiling to assess the effects of different management types on diet quality in semi-arid savanna
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: KR Mbatha D WardWe used faecal profiling to assess diet quality of animals under three different management types in a semi-arid savanna, northwest of Kimberley, Northern Cape, South Africa. The levels of faecal crude protein (FCP) and faecal phosphorus (FP) of free-ranging springbok... -
Determining spatial and temporal variability in quantity and quality of vegetation for estimating the predictable sustainable stocking rate in the semi-arid savanna
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: KR Mbatha D WardThis study assessed the importance of spatial and temporal variation in plant quality and quantity for determining sustainable stocking rates in game, commercial and communal ranches in semi-arid savanna of the Northern Cape Province, South Africa, in wet and dry... -
Classification of the grass layer of semi‐arid rangeland in the Smaldeel area of the eastern Cape
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: J.C. Martens --- Dept of Agriculture, Republic of South Africa C.D. Morris --- Agricultural Research Council, Republic of South AfricaHierarchical classification based on proportional species composition of the grass layer was used to identify and classify semi‐arid rangeland into range types. The relation between range types produced by the classification and the environmental parameters measured were investigated using a... -
Browse production and leaf phenology of some trees and shrubs in different Colophospermum mopane savanna communities
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: B. Dekker --- Department of Agriculture, Republic of South Africa G.N. Smit --- Department of Agriculture, Republic of South AfricaLeaf dry mass (DM) at peak biomass was estimated for different plant communities in a semi‐arid savanna. These estimates included the total leaf DM, as well as estimates of the leaf DM at browsing heights of 1.5 m, 2.0 m... -
The impact of grazing on forage quality of the herbaceous vegetation in the Mamora cork oak forest, Morocco
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: M. Mejjati Alami --- Department of Plant Ecology and Range Science, Morocco T.E. Bedell --- Department of Rangeland Resources, United States S.H. Sharrow --- Department of Rangeland Resources, United States O. Berkat --- Department of Plant Ecology and Range Science, MoroccoThis research was conducted in the Mamora cork oak forest of Morocco to describe the impacts of sheep grazing (no use, 35% use, 70% use) in March, April, May and June of 1987 and 1988 on seasonal changes in forage... -
Physicochemical characteristics of communal rangeland soils along two defined toposequences in the Eastern Cape, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: MS Lesoli --- Department of Livestock and Pasture Science, South Africa S Dube --- Department of Livestock and Pasture Science, South Africa AO Fatunbi --- Agricultural and Rural Development Research Institute, South Africa B Moyo --- Department of Livestock and Pasture Science, South AfricaTo proffer a sustainable solution to rangeland degradation, an understanding of the innate soil properties is vital. This study investigated the relative association of surface (0–20 cm) soil physicochemical properties, viz. electrical conductivity, cation exchange capacity (CEC), soil organic carbon,... -
Topographical units and soil types prove more efficient for vegetation sample site placement than Land Type units in semi-arid savanna, North West province, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Francois Viljoen --- Department of Nature Conservation, South Africa Kerryn Bullock --- Department of Nature Conservation, South Africa Mike Panagos --- Department of Nature Conservation, South Africa Willem Myburgh --- Department of Nature Conservation, South AfricaLand Type mapping units were used to stratify the Heritage Park corridor, in the North West province, South Africa, into eight Land Type units prior to placing 109 floristic sample sites. At each site, species composition and relative frequency data... -
Precision forestry for pulpwood re-establishment silviculture
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Robert Neil PallettThe Southern African pulp and paper industry has a strong export focus and operates in an open global market. In a global context, wood is a commodity product and an ongoing strategy of reduction in the unit cost of timber... -
An investigation into the occurrence and nature of genotype by environment interaction in Pinus patula
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: C.L. Snedden --- , South Africa S.D. Verryn --- , South AfricaThis study was conducted as part of a joint venture between the tree improvement teams of Safcol and the CSIR to develop a breeding, production and conservation strategy for Pinus patula. -
Jungian Analysts and African Diviners: An Exploration of the Archetype of the Self
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Catherine Geils --- University of KwaZulu-Natal, South AfricaThis paper compares Jungian psychology and African indigenous healing practices through a theoretical review. It argues that while both practices express the shamanic archetype and facilitate the universal instinct towards wholeness, the expression of this differs. In Jungian psychology the... -
Teachers' Gender Stereotypes in South Africa: A Case Study
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Tuntufye S. Mwamwenda --- Africa Institute of South Africa,The study investigated Teachers' gender stereotypes in the Eastern Province of South Africa. Participants were 65 Junior Secondary school teachers (females= 40 and males = 25) who assembled together at a seminar organized by the Department of Education. They completed... -
Intuition as a Healing Modality: Historical and Contemporary Perspectives
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Stephen D. Edwards --- University of Zululand,This article examines intuition as an archetypal, cultural-spiritual healing modality. It builds on the notion of intuition as a reality founded on the archetypal calling to become a healer. Consideration is given to a variety of intuition traditions as well... -
On the L2n 1– Extension Properties
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Lahcène MezragWe have proved that for all compact linear operator u from R into an Lp ([0,1], ν) (0 < p < 1) extends to L 1 ([0,1], ν), where R denotes the closed linear subspace in L 1 ([0,1], ν)... -
Right radicals for right distributively generated near-rings
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: J.F.T. Hartney D.S. RusznyakFor right near-rings the left representation has always been considered the natural one. However, Hanna Neumann [6] constructed her right near-rings by writing the reduced free group on the left of the near-ring. In [2] and [8] Neumann's ideas are... -
BOUNDED SUBSETS AND WEAK REALCOMPACTNESS CONDITIONS
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: S. Kundu --- Department Of Mathematics, Indian Institute of Technology, Delhi, New Delhi, India, A. B. Raha --- Stat-Math Division, Indian Statistical Institute, Calcutta, India, M. A. Swardson --- Department of Mathematics, Ohio University, Athens, Ohio, USA,A subset A of X is bounded if every continuous real-valued function on X is bounded on A. A completely regular Hausdorff space X is said to have the bz-property if every bounded subset of X is contained in a... -
A note on generating functions for Rogers-Szegő polynomials
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jian Cao --- Department of Mathematics, P.R. ChinaIn this paper, the details of certain Carlitz's generating functions for Rogers-Szegőpolynomials and their generalizations are given by Carlitz's q-operators. In addition, an additional proof of Srivastava-Jain's generating function is shown. At last, generalizations of Srivastava-Agarwal type generating functions are... -
Self-orthogonal codes from some Bush-type Hadamard matrices
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Dean Crnković --- Department of Mathematics, Croatia B.G. Rodrigues --- School of Mathematical Sciences, South AfricaBy means of a construction method outlined by Harada and Tonchev, we determine some non-binary self-orthogonal codes obtained from the row span of orbit matrices of Bush-type Hadamard matrices that admit a fixed-point-free and fixed-block-free automorphism of prime order. We... -
Competing or co-existing? Representations of HIV/AIDS by white women teachers in post-apartheid South Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Lauren de Kock Jane WillsThis study explores the social representations of HIV and AIDS that circulate among white women teachers in South Africa, a group whose personal risk of the disease is low but who have a major role to play in shaping attitudes... -
Key determinants of AIDS impact in Southern sub-Saharan Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Wayne Xavier ShanderaTo investigate why Southern sub-Saharan Africa is more severely impacted by HIV and AIDS than other parts of sub-Saharan Africa, I conducted a review of the literature that assessed viral, host and transmission (societal) factors. This narrative review evaluates: 1)... -
River and wetland classifications for freshwater conservation planning in KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NA Rivers-Moore --- Ezemvelo KZN Wildlife, South Africa PS Goodman --- Ezemvelo KZN Wildlife, South AfricaTo provide the foundation for a freshwater conservation plan for KwaZulu-Natal, three-level hierarchical river and wetland type classifications, based on spatio-temporal scaling relationships, are proposed. This resolution of classification is appropriate for regional- or provincial-scale conservation planning. The hierarchical structure... -
A comparison between fish assemblages in mangrove forests and on intertidal flats at Ungwana Bay, Kenya
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DO Mirera --- , Kenya JG Kairo --- , Kenya EN Kimani --- , Kenya FK Waweru --- , KenyaFish assemblages of mangrove forest patches and adjacent intertidal flats in Ungwana Bay were compared using stake-net sampling in the mangrove forest and intertidal flat habitats between December 2002 and November 2003. Four forest sites were compared with paired intertidal... -
Diversity patterns of temporary wetland macroinvertebrate assemblages in the south-western Cape, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MC Mlambo --- Freshwater Research Unit, Department of Zoology, South Africa MS Bird --- Freshwater Research Unit, Department of Zoology, South Africa CC Reed --- Freshwater Research Unit, Department of Zoology, South Africa JA Day --- Freshwater Research Unit, Department of Zoology, South AfricaAlthough macroinvertebrates are potentially useful for assessing the condition of temporary wetlands, little is yet known about them. Macroinvertebrate assemblages were assessed in 138 temporary wetlands in the south-western Cape, recording 126 taxa. However, predicted richness estimates were all higher... -
7. Problems in Using Vegetation or Soil Classification in Determining Site Quality
Item type: Journal Article • Journal: South African Forestry Journal • Authors: A. P.G. Schönau --- , South AfricaThis paper discusses the concepts of site and site quality and reviews briefly the determination of the latter. Site quality is viewed primarily as productive capacity of forest land, although other aspects are considered also. It is concluded that nowadays... -
Genotype by environment interaction for volume growth at 6 years of age in a series of five Pinus patula progeny trials in southern Africa
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Arnulf Kanzler --- Sappi Forest Research, South Africa Sieg F. Hagedorn --- , South Africa Gary R. Hodge --- CAMCORE, USA William S. Dvorak --- CAMCORE, USAGenotype x environment interaction was investigated in a series of 5 Pinus patula progeny trials planted by the Institute for Commercial Forestry Research in southern Africa. The trials were established from Mpumalanga to the North-eastern Cape in a balanced 7x7... -
Efficiency of inventory plot patterns in quantitative analysis of vegetation: a case study of tropical woodland and dense forest in Benin
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: ValèreK Salako --- Faculty of Agronomic Sciences, Benin RomainL Glele Kakaï --- Faculty of Agronomic Sciences, Benin AchilleE Assogbadjo --- Faculty of Agronomic Sciences, Benin Belarmain Fandohan --- Faculty of Agronomic Sciences, Benin Marcel Houinato --- Faculty of Agronomic Sciences, Benin Rodolphe Palm --- Agro-Bio Tech, BelgiumThe main issue in forest inventory is the reliability of data collected, which depends on the shape and size of inventoried plots. There is also a need for harmonisation of inventoried plot patterns in West Africa. This study focused on... -
A model to predict productivity of different chipping operations
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: MohammadR Ghaffariyan --- , Australia Raffaele Spinelli --- , Italy Mark Brown --- , AustraliaThe chipping operation is an important component of harvesting systems producing biomass and pulp chips. This paper aimed to develop a valid model to predict the productivity of chipping as part of these operations. Over a number of years more... -
Growth potential of Eucalyptus cypellocarpa as an alternative species for the mid-altitude summer rainfall region of South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Christopher Komakech --- Forestry and Forestry Products, South Africa Tammy-L Swain --- , South Africa Annabel Fossey --- Biotechnology, South AfricaEucalyptus grandis is predominantly cultivated in the humid, warmer temperate, subtropical regions in South Africa for pulp and paper production because of its rapid growth and desirable wood properties. With forestry expanding into mid-altitude drier and warmer, or drier and... -
Genetic characterisation of a Eucalyptus nitens base breeding population in South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Tammy-L Swain --- Institute for Commercial Forestry Research, South Africa SteveD Verryn --- Forestry and Agricultural Biotechnology Institute, South Africa MarkD Laing --- School of Agricultural Earth and Environmental Sciences, South AfricaThe measurement and statistical analysis of data from eight Eucalyptus nitens trials, established in the summer rainfall forestry region of South Africa during the 1980s and 1990s, have enabled the characterisation of the Institute for Commercial Forestry Research's breeding population... -
Zooplankton composition, abundance and distribution in selected south and west coast estuaries in South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PH Montoya-Maya --- Department of Ichthyology and Fisheries Science, South Africa NA Strydom --- , South AfricaIn order to contribute to the understanding of estuarine zooplankton dynamics in cool-temperate systems, zooplankton samples were collected by plankton tows, using two modified WP2 nets, in nine estuaries on the south and west coasts of South Africa, seasonally between... -
Balanus glandula: from North-West America to the west coast of South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: N Simon-Blecher Z Granevitze Y AchituvWe report the occurrence of the North-East Pacific intertidal barnacle Balanus glandula in the south-western African shores of the Atlantic Ocean. In addition, an attempt is made to trace the origin of the South African population by comparing the distribution... -
Factors affecting recapture rates of raggedtooth sharks Carcharias taurus tagged off the east coast of South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: ML Dicken --- Department of Ichthyology and Fisheries Science, South Africa AJ Booth --- Department of Ichthyology and Fisheries Science, South Africa MJ Smale --- , South AfricaUnderstanding differences in the recapture rate between different tags (A-, B- and C-types), capture methods (rock-and-surf anglers, scientific divers and Natal Sharks Board protection nets) and life-history stages (juvenile and adult) is critical in evaluating the results obtained from cooperative... -
Phenotypic plasticity and local adaptation in two extreme populations of Acacia karroo
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: G Bayonne Mboumba D WardPhenotypic plasticity is the effect of growth variability in response to different environmental conditions. Adaptive phenotypic plasticity is more specific; it is the ability of a single genotype to produce an array of phenotypes depending on the environmental extent. We... -
Genotype × environment interactions and yield stability of stress-tolerant open-pollinated maize varieties in the Eastern Cape province, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Vimbayi GP Chimonyo --- Department of Agronomy, Faculty of Science and Agriculture, South Africa Charles S Mutengwa --- Department of Agronomy, Faculty of Science and Agriculture, South Africa Cornelius Chiduza --- Department of Agronomy, Faculty of Science and Agriculture, South AfricaGenotype × environment interactions are inherent in multilocational trials and complicate identification of superior genotypes. The aim of the study was to determine yield performance and stability of 13 maize genotypes in five locations of the Eastern Cape province, South... -
Setting glycaemic targets in patients with type 2 diabetes. Where to now?
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: LA Distiller --- Centre for Diabetes and Endocrinology, South Africa -
High prevalence of abnormal liver enzymes in South African patients with type 2 diabetes mellitus attending a diabetes clinic
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: IM Paruk --- Department of Diabetes and Endocrinology, FJ Pirie --- Department of Diabetes and Endocrinology, AA Motala --- Department of Diabetes and Endocrinology, BA Kolawole --- Obafemi Awolowo University, NigeriaObjective: To determine the prevalence of liver function test abnormalities in South African black and Indian adult patients with type 2 diabetes mellitus attending a tertiary diabetes clinic. -
Prediabetes: a focus on the role of diabetes education in prevention of type 2 diabetes
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: L Van der Merwe --- Empangeni Diabetes Centre, -
Management of type 2 diabetes mellitus for general practitioners
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: AM Klisiewicz --- Department of Internal Medicine, KRL Huddle --- Department of Internal Medicine,A 55-year-old Asian man presents with a history of intense thirst, polyuria, blurring of vision and weight loss over a period of several weeks. He is obese with a waist circumference of 110 cm and a body mass index (BMI)... -
Autoimmune polyglandular syndrome type 1 in a 12-year-old Ugandan girl
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: D Kibirige --- Makerere University College of Health Sciences and Dermatology Unit, Mulago National Referral and Teaching Hospital, Uganda F Kambugu --- Makerere University College of Health Sciences and Endocrine Unit, Mulago National Referral and Teaching Hospital, UgandaAutoimmune polyglandular syndrome type 1 (APS-1), also known as autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy syndrome, is a very rare disorder of childhood. It is mainly characterised by the presence of at least two of the following: chronic mucocutaneous candidiasis, chronic hypoparathyroidism and... -
The epidemiology and pathogenesis of type 1 diabetes mellitus in Africa
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: CJ Padoa --- Department of Chemical Pathology National Health Laboratory Service,Type 1 diabetes is a serious, debilitating disease, with life-threatening complications, and the financial burden associated with the management of this disease is enormous. Early diagnosis and intervention can improve morbidity and mortality. Unfortunately, in Africa, type 1 diabetes is... -
Assessing maths literacy skills in type 1 diabetic children and their caregivers
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: FY Moosa --- Department of Paediatrics, D Segal --- Department of Paediatrics,Background: It is essential that children have adequate numeracy and literacy skills in order to manage their diabetes effectively. The objective was to undertake a pilot study to assess the level of numeracy skills in type 1 diabetic children and... -
Mortality patterns among type 2 diabetes mellitus patients in Ilorin, Nigeria
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: A Chijioke --- Department of Medicine, Nigeria AN Adamu --- Department of Medicine, Nigeria AM Makusidi --- Department of Medicine, NigeriaObjective: People living with diabetes mellitus (DM) are prone to varied forms of complications which often lead to their premature death. The vulnerability has the greatest impact in type 2 DM because of larger numerical strength, insidious onset and late... -
The role of biomarkers and B-type natriuretic peptide in diagnosis and perioperative risk prediction
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: N Afshani --- Department of Anaesthesia, BM Biccard --- Department of Anaesthetics, RA Dyer --- Department of Anaesthesia,Biomarkers are important in diagnosis, assessment of disease severity, risk stratification and therapeutic decision-making. Recent studies strongly suggest that there is a role for B-type natriuretic peptide (BtNP) as a powerful prognostic predictor in both the preoperative and postoperative setting... -
Preoperative B-type natriuretic peptide risk stratification: do postoperative indices add value?
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: RN Rodseth --- Perioperative Research Group, Department of Anaesthetics, K Vasconcellos --- Department of Anaesthetics and Critical Care, P Naidoo --- National Health Laboratory Services; Department of Chemical Pathology, BM Biccard --- Perioperative Research Group, Department of Anaesthetics,Objectives: It is unclear if there is value in measuring postoperative B-type natriuretic peptide (BNP) in patients risk-stratified using preoperative BNP. -
A review of insulin and insulin regimens in type 2 diabetes
Item type: Journal Article • Journal: South African Family Practice • Authors: S Joshi --- Diabetes Care Centre, Louis Pasteur Medical Centre, P Joshi --- Medical University of Southern Africa,We have reviewed the various insulins available in the South African market, together with the modes of action of each of the formulations. The insulin groups discussed include the Basal insulins, the bolus or prandial insulins, and the premixed insulins... -
Bouncing forward: families living with a type I diabetic child
Item type: Journal Article • Journal: South African Family Practice • Authors: O Brown --- Department of Psychology, Faculty of Health Sciences, South Africa P Fouché --- Department of Psychology, Faculty of the Humanities, South Africa M Coetzee --- Uitenhage Provincial Hospital, South AfricaBackground: Despite the multitude of challenges that families living with a child with diabetes face, they have been found to adapt to such an extent that diabetes is viewed as a manageable condition. This study was concerned with the factors... -
The relationship between ABO/rhesus blood groups and type 2 diabetes mellitus in Maghnia, western Algeria
Item type: Journal Article • Journal: South African Family Practice • Authors: Sahi M Dali --- Laboratoire de valorisation de l'action de l'homme pour la protection de l'environnement et application en santé publique (équipe environnement et santé), Faculté des Sciences, Algérie Metri A Aour --- Laboratoire de valorisation de l'action de l'homme pour la protection de l'environnement et application en santé publique (équipe environnement et santé), Faculté des Sciences, Algérie F Belmokhtar --- Department of Ecology and Environment, Algérie R Belmokhtar --- Department of Ecology and Environment, Algérie F Boazza --- Laboratoire d'Anthropologie des Religions et comparaison, Faculté des Sciences Humaines et Sociales, AlgérieBackground: To determine the relationship between ABO/rhesus (Rh) blood groups and type 2 diabetes mellitus in a western Algerian population. -
Glycaemic control: do no harm
Item type: Journal Article • Journal: South African Family Practice • Authors: L Kelly --- Division of Clinical Sciences, Canada -
Patients with type 2 diabetes and difficulties associated with initiation of insulin therapy in a public health clinic in Durban
Item type: Journal Article • Journal: South African Family Practice • Authors: DM Nadasen --- Phoenix Community Health Centre; Department of Family Medicine, M Naidoo --- Department of Family Medicine,Objectives: Many patients with type 2 diabetes are uncontrolled on maximum oral treatment. The early introduction of insulin can lower diabetes-related complications. The purpose of this study was to explore the reasons behind a perceived reluctance of patients with type... -
The effect of the introduction of a standard monitoring protocol on the investigations performed on the metabolic control of type 2 diabetes at Addington Hospital Medical Outpatients Department, Durban, South Africa
Item type: Journal Article • Journal: South African Family Practice • Authors: JM Gill --- Department of Family Medicine, A Ross --- Department of Family Medicine, F Pirie --- Department of Diabetes and Endocrinology, Division of Medicine, T Esterhuizen --- Programme of Biostatistics,Background: A comprehensive approach to the control of type 2 diabetes is required to reduce mortality and morbidity. To improve diabetes management, in 2005 a protocol for the monitoring and management of type 2 diabetes, aligned to the 2003 Society... -
What the primary healthcare worker needs to know about the management of type 2 diabetes
Item type: Journal Article • Journal: South African Family Practice • Authors: WF Mollentze --- Department of Medicine, -
Angiotensin II type 1 receptor antagonists and their combinations in the treatment of hypertension
Item type: Journal Article • Journal: South African Family Practice • Authors: JA Ker --- Department of Internal Medicine, -
An evaluation of insulin therapy initiation among patients with type 2 diabetes attending a public health facility in South Africa
Item type: Journal Article • Journal: South African Family Practice • Authors: L Mayet --- Diabetes Unit, SS Naidoo --- Department of Family Medicine,Background: Clinically effective interventions that could reduce diabetic patients' risk of long-term complications are needed to contain the rising cost of diabetes care associated with the increasing prevalence of this condition. Good glycaemic control needs to be rapidly attained and... -
What's the latest on sulphonylureas in the management of type 2 diabetes?
Item type: Journal Article • Journal: South African Family Practice • Authors: Gail Mkele [AN0001]Sulphonylureas act by binding to sulphonylurea receptors and stimulating insulin secretion from pancreatic beta cells. This class of oral hypoglycaemic agents is still widely used in the management of type 2 diabetes in patients where lifestyle changes alone are insufficient... -
Glucagon-like peptide 1 receptor agonists: a new approach to type 2 diabetes management
Item type: Journal Article • Journal: South African Family Practice • Authors: Lambert Lynn [AN0001]Despite advances in options for the treatment of type 2 diabetes, optimal glycaemic control is often not achieved. Hypoglycaemia and weight gain that are associated with many antidiabetic medications may interfere with the implementation and long-term application of treatment strategies... -
Management of hypertension in patients with type 2 diabetes mellitus
Item type: Journal Article • Journal: South African Family Practice • Authors: MLI Mashitisho --- Department of Internal Medicine,Hypertension and diabetes co-exist. The prevalence of hypertension is higher in patients with type 2 diabetes mellitus, while patients with hypertension have a higher incidence of developing type 2 diabetes mellitus. Hypertension in patients with diabetes is linked to cardiovascular... -
A review of phosphodiesterase type 5 inhibitors
Item type: Journal Article • Journal: South African Family Practice • Authors: N Schellack --- Department of Pharmacy, Faculty of Health Sciences, A Agoro --- Department of Pharmacy, Faculty of Health Sciences,Currently, three phosphodiesterase type 5 (PDE5) inhibitors are available for clinical use in South Africa; sildenafil, vardenafil and tadalafil. The PDE inhibitors are used in males to treat erectile dysfunction. However, sildenafil is also registered for use in the treatment... -
Genetic diversity and gene flow in Clarias gariepinus from Lakes Victoria and Kanyaboli, Kenya
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JE Barasa --- Department of Fisheries and Aquatic Sciences, Kenya R Abila --- Department of Fisheries Management and Aquaculture Technology, Kenya JP Grobler --- Department of Genetics, South Africa OG Dangasuk --- Department of Biological Sciences, Molecular Genetics Section, Kenya MN Njahira --- Biosciences eastern and central Africa - International Livestock Research Institute Hub (BecA-ILRI Hub), Kenya B Kaunda-Arara --- Department of Fisheries and Aquatic Sciences, KenyaThe African catfish Clarias gariepinus is an important species in the rapidly expanding aquaculture industry in East Africa. Most Kenyan catfish farmers use stocks with unknown genetic characteristics, with uncertified seeds and inter-basin exchange of brood stocks threatening the genetic... -
Experiences of stereotyping among individuals employed in selected South African organisations
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Lizelle Brink --- Faculty of Economic and Management Sciences, South Africa Jan Alewyn Nel --- Faculty of Economic and Management Sciences, South AfricaThis study investigated the effects of stereotypes among individuals working in selected South African organisations. The participants were 336 employees within the following sectors: banking (n = 40), higher education institutions (n = 72), mining (n = 63), municipalities (n = 24), nursing (n = 4), police services (n = 20), schools... -
Unravelling population structure of black musselcracker Cymatoceps nasutus: evidence for multiple populations in South African coastal waters
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: TS Murray --- Department of Ichthyology and Fisheries Science, South Africa G Gouws --- South African Institute for Aquatic Biodiversity, South Africa M Mwale --- South African Institute for Aquatic Biodiversity, South Africa BQ Mann --- Oceanographic Research Institute, South Africa PD Cowley --- South African Institute for Aquatic Biodiversity, South AfricaGenetic studies on South African marine fishes have shown that many species exist as single, well-mixed stocks throughout their core distribution. The black musselcracker or poenskop Cymatoceps nasutus is a slow-growing, late-maturing and long-lived sparid (Perciformes: Sparidae) that is endemic... -
Content analysis of food advertising strategies and ethical implications on South African television
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Supa Pengpid --- Mahidol University, Thailand Karl Peltzer --- University of Limpopo, South AfricaThe study aimed to investigate strategies and ethical implications of food advertising in South African television. The sample included 343 food advertisements recorded over two weeks and 224 hours from two major South African TV channels. Results indicate 45 products... -
Genetic diversity of Amaranthus species in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Abe S Gerrano --- Agricultural Research Council–Roodeplaat Vegetable and Ornamental Plant Institute, South Africa Willem S Jansen van Rensburg --- Agricultural Research Council–Roodeplaat Vegetable and Ornamental Plant Institute, South Africa Patrick O Adebola --- Agricultural Research Council–Roodeplaat Vegetable and Ornamental Plant Institute, South AfricaAmaranthus species plays an important role in sustaining food security and alleviation of malnutrition in South Africa. A number of Amaranthus genotypes have been collected and conserved in the gene bank of the ARC–Roodeplaat Vegetable and Ornamental Plant Institute, South... -
Towards a classification of Tanzanian rivers: a bioassessment and ecological management tool. A case study of the Pangani, Rufiji and Wami–Ruvu river basins
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: LT Kaaya --- Department of Aquatic Sciences and Fisheries, TanzaniaRiver classification is important for reporting ecological status and for the general ecological management of river systems by partitioning natural variability. A priori river classification by abiotic variables and validation of classifications obtained using aquatic macroinvertebrates from reference sites for... -
Karyology of the redfin minnows, genus Pseudobarbus Smith, 1841 (Teleostei: Cyprinidae): one of the evolutionarily tetraploid lineages of South African barbines
Item type: Journal Article • Journal: African Zoology • Authors: D. Naran --- Department of Ichthyology and Fisheries Sciences, South Africa P. H. Skelton --- South African Institute for Aquatic Biodiversity, South Africa M. H. Villet --- Department of Zoology and Entomology, South AfricaThe karyotypes of six species of Pseudobarbus Smith, 1841, namely P. afer (Peters, 1864), P. asper (Boulenger, 1911), P. burchelli Smith, 1841, P. burgi (Boulenger, 1911), P. phlegethon (Barnard, 1938) and P. tenuis (Barnard, 1938), were examined by conventional Giemsa... -
Description of larval fish composition, abundance and distribution in nine south and west coast estuaries of South Africa
Item type: Journal Article • Journal: African Zoology • Authors: P. H. Montoya-Maya --- Department of Ichthyology and Fisheries Science, South Africa N. A. Strydom --- South African Institute for Aquatic Biodiversity, South AfricaThe composition, abundance and distribution of larval fishes from nine south and west coast estuaries from South Africa was investigated by plankton tow once per season between June 2003 and March 2004. A total of 49 274 early stage fishes... -
Genetic variation in the Critically Endangered velvet worm Opisthopatus roseus (Onychophora: Peripatopsidae)
Item type: Journal Article • Journal: African Zoology • Authors: Savel R. Daniels --- Department of Botany and Zoology, South AfricaIn the present study the genetic variation of the Critically Endangered velvet worm species Opisthopatus roseus is examined. This species is endemic to the Ngele mistbelt forest in the KwaZulu-Natal province of South Africa. In recent years the forest has... -
Population metrics for fynbos birds, South Africa: densities, and detection and capture rates from a Mediterranean-type ecosystem
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Alan TK Lee --- Kirstenbosch Research Centre, South African National Biodiversity Institute, South Africa Phoebe Barnard --- Kirstenbosch Research Centre, South African National Biodiversity Institute, South Africa Philip AR Hockey --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South AfricaEstimates of bird numbers through quantification of density and range sizes are necessary for decisions regarding conservation status, yet counts of birds are often confounded by uncertainty of detection. The status of the endemic birds of the Fynbos biome is... -
Phenotypic characterisation of sweetpotato genotypes grown in East and Central Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Rukundo Placide --- African Centre for Crop Improvement, South Africa Hussein Shimelis --- African Centre for Crop Improvement, South Africa Mark Laing --- African Centre for Crop Improvement, South Africa Daphrose Gahakwa --- Rwanda Agriculture Board, RwandaIdentification of genetic variability and interrelationships among germplasm collections is fundamental to select parents with complementary traits for plant breeding programmes. The aim of this study was to characterise and identify breeding parents among 54 sweetpotato genotypes grown in Rwanda,... -
Audit firm rotation and audit report: evidence from the Tehran Stock Exchange
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Saman Mohammadi --- Department of Accounting, Iran Mohammad Monfared Maharlouie --- Master of Accounting, Iran Sepideh Kazemi Noori --- Financial Management, IranThis research is an attempt to study the relationship between audit firm rotation and audit reports in companies listed on the Tehran Stock Exchange from 2003 to 2011. Due to the nominal nature of the variables, this study uses a... -
Effect of the subprime mortgage crisis on a leading emerging market
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Jun Sik Kim --- Division of International Trade, Korea Doojin Ryu --- College of Economics, KoreaThis study examines how the US subprime mortgage crisis affects the behaviour of the Korean stock and futures market and how the futures traders react to the shocks related to the crisis. Analysing a unique and high-quality daily data set... -
The evaluation of career-oriented dialogues in a social constructivist learning environment
Item type: Journal Article • Journal: • Authors: Hanneke Assen --- Stenden University of Applied Sciences, Leeuwarden, The Netherlands Wichard Zwaal --- Stenden University of Applied Sciences, Leeuwarden, The NetherlandsThis study explored career-oriented dialogues between study career coaches (SCCs) and first-year students in a social constructivist learning environment. Four types of orientation in career-oriented dialogues were identified: action, evaluation, analysis and design. Additionally, the type of dialogue, the topics... -
Redescription of Hydrolagus africanus (Gilchrist, 1922) (Chimaeriformes: Chimaeridae), with a review of southern African chimaeroids and a key to their identification
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: KA Walovich --- Pacific Shark Research Center, USA DA Ebert --- Pacific Shark Research Center, USA DJ Long --- Department of Ichthyology, USA DA Didier --- Department of Biological Sciences, USAHydrolagus africanus (Gilchrist, 1922) is a little‑known chimaeroid species, originally described from the KwaZulu‑ Natal coast of South Africa, with a range spanning the western Indian Ocean from Kenya, south to Mozambique and South Africa, and extending into the south‑eastern... -
Reasons for diabetes patients attending Bishop Lavis Community Health Centre being non-adherent to diabetes care
Item type: Journal Article • Journal: South African Family Practice • Authors: Bernice L Booysen --- University of Stellenbosch, South Africa Arina C Schlemmer --- University of Stellenbosch, South AfricaBackground: Non-adherence to diabetes care is a concern at Bishop Lavis Community Health Centre (BLCHC) as it results in many diabetes complications that could have been avoided. The aim was to explore the reasons for people with diabetes in the... -
Sleep duration and chronotype in adults in Côte d'Ivoire: influence of gender, religion and age
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Claudia Borchers --- Max Planck Institute of Evolutionary Anthropology, Germany Dabila Ouattara --- Wild Chimpanzee Foundation, Switzerland Christian Vollmer --- Institute of Psychology, Germany Christoph Randler --- Institute of Science, Geography and Technology, GermanyThis study investigated the sleep-wake rhythm and chronotype of people living in Côte d'Ivoire. We assessed sleep-wake behaviour in 556 adults (336 men, 220 women) between 25 and 54 years (mean: 38.63) by means of structured interviews. Data were analysed... -
Growth Performance of Two Crossbred Rabbit Genotypes Fed Two Levels of Dietary Protein
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: O. M. Momoh --- Department of Animal Breeding and Physiology, H. U. Unung --- Department of Animal Breeding and Physiology, S. Attah --- Department of Animal Production, NigeriaA study was undertaken in which two crossbred rabbit genotypes were fed two levels of dietary crude protein with the objectives of assessing and comparing their growth performances as well as investigate any possible genotype × protein level interaction. Twenty-four... -
Genetic variability in cowpea (Vigna unguiculata (L.) Walp.) genotypes
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Abe S Gerrano --- Agricultural Research Council–Roodeplaat Vegetable and Ornamental Plant Institute, South Africa Patrick O Adebola --- Agricultural Research Council–Roodeplaat Vegetable and Ornamental Plant Institute, South Africa Willem S Jansen van Rensburg --- Agricultural Research Council–Roodeplaat Vegetable and Ornamental Plant Institute, South Africa Sunette M Laurie --- Agricultural Research Council–Roodeplaat Vegetable and Ornamental Plant Institute, South AfricaInformation on genetic variability among the existing cowpea genotypes will increase the efficiency of the cowpea improvement. Field experiments were conducted at the Agricultural Research Council–Roodeplaat Vegetable and Ornamental Plant Institute in South Africa, in 2011 and 2012, to estimate... -
Agronomic performance of new cream to yellow-orange sweetpotato cultivars in diverse environments across South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Sunette M Laurie --- Agricultural Research Council–Roodeplaat Vegetable and Ornamental Plant Institute (ARC-VOPI), South Africa Sidwell S Tjale --- Agricultural Research Council–Roodeplaat Vegetable and Ornamental Plant Institute (ARC-VOPI), South Africa Andre A van den Berg --- Agricultural Research Council–Roodeplaat Vegetable and Ornamental Plant Institute (ARC-VOPI), South Africa Musa M Mtileni --- Agricultural Research Council–Roodeplaat Vegetable and Ornamental Plant Institute (ARC-VOPI), South Africa Maryke T Labuschagne --- Department of Plant Sciences, South AfricaSweetpotato is grown in diverse environments of South Africa by both commercial and subsistence farmers. The aim of the present study was to assess the stability, agronomic performance and palatability of new ARC cultivars bred for the informal market, and... -
Community perceptions of tourism in the Tshivhase area of the Limpopo Province, South Africa
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: C.C. Boonzaaier --- Department of Anthropology and Archaeology, J.H.F. Grobler --- Department of Anthropology and Archaeology,In the past, Third World places and peoples have been promoted largely by First World tourism agents who relied heavily on stereotyped images from a colonial past, consequently depriving local communities of opportunities and the right to define their own... -
The Dracula killer: A psychobiographical illustration of the Schahriar syndrome model for serial murder
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Paul Fouché --- Department of Psychology, Faculty of the Humanities, South Africa Hanlie Nel --- Department of Psychology, Faculty of the Humanities, South Africa Pravani Naidoo --- Department of Psychology, Faculty of the Humanities, South AfricaThis psychobiographical study of Richard Trenton Chase (1950–1980), a serial murderer, has the aim to uncover the psychic mechanisms characteristic of his functioning. The study included primary and secondary data sources. All materials collected and analysed, were published and publically... -
Stereotypical attitudes amongst black students at a rural historically black South African university
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Cebile Mensele --- Industrial and Organisational Psychology, South Africa Kathryn Nel --- Department of Psychology, South Africa Elzabé C. Nel --- Industrial and Organisational Psychology, South Africa Larisa A Louw --- Industrial and Organisational Psychology, South AfricaThis study investigated stereotypical attitudes towards race amongst Black students (N=274) attending a historically Black South African university (females=62%; mean age of 22.15 years; SD=3.00 years). Data on group stereotyping by race were collected using a semi-structured questionnaire. The data... -
Case Study: Epithelioid sarcoma of the vulva
Item type: Journal Article • Journal: Southern African Journal of Gynaecological Oncology • Authors: L J Rogers --- Division of Gynaecological Oncology, South Africa H Wu --- Division of Anatomical Pathology, South Africa D Govender --- Division of Anatomical Pathology, South Africa L A Denny --- Division of Gynaecological Oncology, South AfricaVulval epithelioid sarcoma is a rare, locally-aggressive malignant soft tissue tumour, which may present diagnostic difficulties, both clinically and pathologically. This can result in a delay in appropriate treatment, which consists primarily of radical wide local excision of the tumour... -
Prevalence of Helicobacter pylori cagA and vacA allelic variants and associated disease outcomes in Kenyan patients with dyspepsia
Item type: Journal Article • Journal: Southern African Journal of Epidemiology and Infection • Authors: A.N. Kimang'a --- Department of Medical Microbiology, KenyaAlthough Helicobacter pylori has been linked to various gastric disorders in Western countries and Asia, its aetiopathological role in African populations is controversial. The aim of this study was to investigate the role of H. pylori and its virulence genotypes... -
An assessment of biodiversity surrogacy options in the Limpopo Province of South Africa
Item type: Journal Article • Journal: African Zoology • Authors: B. Reyers --- Conservation Planning Unit, South Africa K.J. Wessels --- Geo Informatics Division, Institute for Soil, South Africa A.S. van Jaarsveld --- Conservation Planning Unit, South AfricaBecause of the inadequacy of existing biodiversity distribution data, surrogate measures for regional biodiversity have long been used in conservation area selection. These measures include species and environmental data. However, the assumed relationship between surrogate measures and regional biodiversity has... -
The role of estuarine type in characterizing early stage fish assemblages in warm temperate estuaries, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: N.A. Strydom --- Department of Ichthyology and Fisheries Science, South Africa A.K. Whitfield --- South African Institute for Aquatic Biodiversity, South Africa T.H. Wooldridge --- Department of Zoology, South AfricaAssemblages of early stage fishes (larval and early juvenile stages) were investigated and compared in seven permanently open and five intermittently open estuarine systems on the warm temperate Eastern Cape coast of South Africa. Estuarine type, by virtue of mouth... -
The influence of family characteristics on glycaemic control among adult patients with type 2 diabetes mellitus attending the general outpatient clinic, National Hospital, Abuja, Nigeria
Item type: Journal Article • Journal: South African Family Practice • Authors: Bethrand Brian Odume --- Department of Family Medicine, Nigeria Onyebuchi Stephanie Ofoegbu --- Department of Family Medicine, Nigeria Elias Chike Aniwada --- Department of Community Medicine, Nigeria Emeka Franklin Okechukwu --- United States Agency for International Development, USAID, NigeriaBackground: There is an increasing epidemic of diabetes worldwide with many patients not achieving set treatment targets. Family interventions in diabetes patient management, a proven adjunct, have not been fully integrated to patient care. -
Health policy implications of blood transfusion-related human T-cell lymphotropic virus type 1 infection and disease
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: Hoosain Paruk --- Department of Neurology, South Africa Ahmed Bhigjee --- Department of Neurology, South AfricaHuman T-cell lymphotropic virus type 1 (HTLV-1) is the causative agent for HTLV-1-associated myelopathy (HAM) or tropical spastic paraparesis (TSP), and adult T-cell leukaemia (ATL). The virus is transmitted vertically from mother to child, and horizontally by sexual intercourse and... -
Molecular detection and characterisation of mumps virus in cerebrospinal fluid in a Gauteng laboratory
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: Marieke Brauer --- Faculty of Health Sciences, Department of Medical Virology, South Africa Marianne Wolfaardt --- Faculty of Health Sciences, Department of Medical Virology, South Africa Lynne M Webber --- Faculty of Health Sciences, Department of Medical Virology, South Africa Maureen B Taylor --- Faculty of Health Sciences, Department of Medical Virology, South AfricaThe study aimed to determine the presence of mumps virus (MuV) in cerebrospinal fluid (CSF) specimens and to genetically characterise detected MuV strains. A real-time reverse transcription-polymerase chain reaction (RT-PCR) was used to detect the MuV F gene, and characterisation... -
Gender inequality dynamics in the prevention of a heterosexual HIV epidemic in sub-Saharan Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Jane Wathuta --- School of Law, University of the Witwatersrand, South AfricaThis paper critiques the approach to the elimination of gender inequality as an HIV prevention strategy in the just ended era of the Millennium Development Goals, with the aim of contributing to the formulation of policy guidelines for sub-Saharan Africa... -
Early insulin therapy in patients with type 2 diabetes mellitus
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: MLI Mashitisho --- Department of Internal Medicine, South Africa BG Mashitisho --- Department of Internal Medicine, South AfricaType 2 diabetes mellitus (T2DM) is a progressive disease characterised by beta cell dysfunction and insulin resistance. Beta cell dysfunction progresses to beta cell failure. Many patients with T2DM are managed with oral agents until complications develop. ‘Clinical inertia’ in... -
Development of a Malian food exchange system based on local foods and dishes for the assessment of nutrient and food intake in type 2 diabetic subjects
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: A. Coulibaly --- Département des sciences des aliments et de nutrition, Faculté des sciences de l’agriculture et de l’alimentation, Canada Ht O’Brien --- Département des sciences des aliments et de nutrition, Faculté des sciences de l’agriculture et de l’alimentation, Canada I. Galibois --- Département des sciences des aliments et de nutrition, Faculté des sciences de l’agriculture et de l’alimentation, CanadaObjective: To develop exchange lists for the assessment of food and nutrient intakes for people with diabetes in Mali. -
Dietary intake and metabolic control of children aged six to ten with type 1 diabetes mellitus in KwaZulu-Natal
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: K. Pillay --- Dietetics and Human Nutrition, Emw. Maunder --- Dietetics and Human Nutrition, Kl. Naidoo --- Paediatrics and Child Health, Nelson R Mandela School of Medicine,Objectives: The objective of this study was to assess the dietary intake and metabolic control of children with type 1 diabetes. -
Genotype-based personalised nutrition for obesity prevention and treatment: are we there yet?
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: M. Senekal --- Associate Professor; Head: Division of Human Nutrition; Department of Human Biology,Interactions between genotype and dietary intake include genetic moderation of the effect of dietary intake on disease development (nutrigenetics). Research on nutrigenetics has focused mainly on single-nucleotide polymorphisms (SNPs) and supports the notion that interactions between genes, diet, other lifestyle... -
Psychometric properties of beliefs about relationship violence against women and gender stereotypes scale
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Sunday B. Fakunmoju --- Department of Social Work, USA Funmi O. Bammeke --- Department of Sociology, Nigeria Felicia A. D. Oyekanmi --- Department of Sociology, Nigeria Segun Temilola --- Department of Sociology, Nigeria Bukola George --- Department of Sociology, NigeriaThis article describes psychometric properties of the Gender-Based Relationship Violence Beliefs Scale (BEREVIWOS) and the Gender Stereotypes and Beliefs (GESTABE) scale in a Nigerian setting. Analysis was based on a convenience sample of 202 respondents. Confirmatory factor analysis (CFA) was... -
Impact of nutrition education on diabetes knowledge and attitudes of adults with type 2 diabetes living in a resource-limited setting in South Africa: a randomised controlled trial
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: JW Muchiri --- Department of Human Nutrition, South Africa GJ Gericke --- Department of Human Nutrition, South Africa P Rheeder --- Department of Internal Medicine, South AfricaObjective: To evaluate the effect of a nutrition education (NE) programme on diabetes knowledge and attitudes of adults with type 2 diabetes mellitus (T2DM). -
Diabetes distress and related factors in South African adults with type 2 diabetes
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Samantha Ramkisson --- Department of Behavioural Medicine, South Africa Basil Joseph Pillay --- Department of Behavioural Medicine, South Africa Benn Sartorius --- Department of Public Health Medicine, South AfricaBackground: In South Africa, the prevalence rate of diabetes is 9.27%, with an estimated 2.6 million people living with the disease. Diabetes-related distress has been described as encompassing the patient’s concerns about the self-management of diabetes, perception of support, emotional... -
Active myofascial trigger points in head and neck muscles of patients with chronic tension-type headache in two primary health care units in Tshwane
Item type: Journal Article • Journal: South African Family Practice • Authors: K Joseph --- Department of Family Medicine, South Africa SA Hitchcock --- Department of Family Medicine, South Africa HP Meyer --- Department of Family Medicine, South Africa MM Geyser --- Department of Family Medicine and Emergency Medicine, South Africa PJ Becker --- Faculty of Health Sciences, South AfricaBackground: The management of patients presenting with chronic tension-type headache (CTTH) can be challenging for primary health care practitioners. As with most chronic pain disorders, a multimodal management approach is frequently required. It has been postulated that myofascial pain syndrome... -
Serum AGEs in black South African patients with type 2 diabetes
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Catherine Martha Mhlanga --- Department of Biochemistry, School of Pathology & Pre-Clinical Sciences, South Africa Motetelo Alfred Mogale --- Department of Biochemistry, School of Pathology & Pre-Clinical Sciences, South Africa Agustine Adu --- Department of Internal Medicine, School of Medicine, South Africa Leshweni Jeremiah Shai --- Faculty of Science, Department of Biomedical Sciences, South AfricaObjective: The objective of this study was to determine serum advanced glycation end products (AGEs) levels in black South African patients with and without type 2 diabetes (T2D) and to compare the results with those reported for other ethnic/race groups. -
Physical and hydrological properties of peatland substrates from different hydrogenetic wetland types on the Maputaland Coastal Plain, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Franziska Faul --- Faculty of Earth and Environmental Sciences, Germany Marvin Gabriel --- Faculty of Life Science, Germany Niko Roßkopf --- Faculty of Life Science, Germany Jutta Zeitz --- Faculty of Life Science, Germany Cornelius W van Huyssteen --- Department of Soil, Crop and Climate Sciences, South Africa Mathilde L Pretorius --- Centre for Environmental Management, South Africa Piet-Louis Grundling --- Centre for Environmental Management, South AfricaThe Maputaland Coastal Plain in KwaZulu-Natal province is home to 60% of all peatlands occurring in South Africa. These ecosystems are increasingly threatened by unsustainable agricultural utilisation, a growing population and climate change. The aim of the study was, therefore,... -
The evaluation of career-oriented dialogues in a social constructivist learning environment
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Hanneke Assen --- Stenden University of Applied Sciences, The Netherlands Wichard Zwaal --- Stenden University of Applied Sciences, The NetherlandsThis study explored career-oriented dialogues between study career coaches (SCCs) and first-year students in a social constructivist learning environment. Four types of orientation in career-oriented dialogues were identified: action, evaluation, analysis and design. Additionally, the type of dialogue, the topics... -
Influences of stereotype and social distance on prejudice toward African Americans
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Ok-joo Choi --- Department of Social Welfare, South Korea Kyung-suk Lee --- Department of Counseling Psychology, South Korea Ki-tai Lee --- Department of Tourism Events and International Conferences, South Korea Joon-ho Kim --- Education Institute, South KoreaThe study sought to identify the influential factors of stereotypes, social distance, and prejudice toward racial/ethnic minorities in the United States. We used data from the American General Social Survey (GSS) of 2012, and analysed the data of 4 820... -
Music fan personality stereotyping in a sample of South African young adults
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Gerhard Helmut Schwär --- Department of Psychology, South Africa John Richard Middleton --- Department of Psychology, South AfricaThis study aimed to elicit stereotypes about personality characteristics of young adults residing in South Africa, based solely on music genres. Participants were 941 undergraduate students at a South African university. They responded to a number of surveys about music... -
“Breaking the cycle”: Black adolescents’ experiences of being stereotyped during identity development
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Nelani Lombaard --- Department of Psychology, South Africa Luzelle Naudé --- Department of Psychology, South AfricaThis study explored the experience of being stereotyped in a group of black South African adolescents. Participants were 73 black adolescents between the ages of 13 and 17 (females = 43.8%, majority ethnicity Setswana = 43,8%). The adolescents participated in... -
Performance of the Androgen Deficiency in Aging Male questionnaire for the clinical detection of androgen deficiency in black sub-Saharan African men with Type-2 diabetes mellitus
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Theophilus E Ugwu --- Department of Medicine, Nigeria Rosemary T Ikem --- Department of Medicine, NigeriaBackground: The Androgen Deficiency in Aging Male (ADAM) questionnaire is increasingly popular for evaluation of androgen deficiency (AD) in sub-Saharan African men with type 2 diabetes mellitus (DM). However, its reliability in this population is unknown. -
Experiences and Challenges of Women Leaders in Sub-Saharan Africa
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Angela Titi Amayah --- Business Management Economics, USA MD Haque --- Managing Director, USAThere is little research on non-Western women managers and leaders in general, and on African women in particular. More attention could be given to influences that shape leadership experiences in order to better understand African women leadership practices. The purpose... -
Significant genetic differentiation among meroplanktonic barrel jellyfish Rhizostoma pulmo (Cnidaria: Scyphozoa) in the Mediterranean Sea
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AR Ben Faleh --- Marine Biology Unit, Faculty of Sciences of Tunis, Tunisia H Allaya --- Marine Biology Unit, Faculty of Sciences of Tunis, Tunisia A Armani --- FishLab, Department of Veterinary Sciences, Italy AAB Shahin --- Department of Zoology, Faculty of Science, EgyptMolecular data have shown that jellyfishes are more geographically restricted and evolutionarily divergent than previously thought. We examined genetic variation and divergence within the meroplanktonic barrel jellyfish Rhizostoma pulmo in the Mediterranean Sea; specific sampling areas were the northern Adriatic,... -
Pseudohypoaldosteronism: report of three cases
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Vesna Stojanović --- School of Medicine, Institute for Child and Youth Health Care of Vojvodina, Serbia Slobodan Spasojević --- School of Medicine, Institute for Child and Youth Health Care of Vojvodina, Serbia Tanja Radovanović --- Institute for Child and Youth Health Care of Vojvodina, Serbia Aleksandra Doronjski --- School of Medicine, Institute for Child and Youth Health Care of Vojvodina, SerbiaPrimary pseudohypoaldosteronism type 1 (PHA-1) is a heterogeneous syndrome characterised by salt-wasting due to unresponsiveness of target organ to mineralocorticoids. It is inherited in an autosomal recessive or autosomal dominant pattern, and often is a result of the mutation de... -
The relationship between Nairobi adolescents’ media use and their sexual beliefs and attitudes
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Ann Neville Miller --- Nicholson School of Communication, USA William Kinnally --- Nicholson School of Communication, USA Hellen Maleche --- Communication Department, Kenya Nancy Achieng’ Booker --- Graduate School of Media and Communications, KenyaAdolescents in sub-Saharan Africa are at risk for contracting HIV. Although media campaigns have educated the population as a whole, few studies are available about the time sub-Saharan African youth spend listening to and viewing sexual messages via the entertainment... -
Poor control and management of type 2 diabetes mellitus at an under-resourced South African Hospital: is it a case of clinical inertia?
Item type: Journal Article • Journal: South African Family Practice • Authors: Romona Devi Govender --- Department of Family Medicine, South Africa Prem Gathiram --- Department of Family Medicine, South Africa Miljenko Panajatovic --- Department of Family Medicine, South AfricaEvidence shows that even with the implementation of evidence-based medicine, the attainment of optimal glycaemic control is difficult and challenging for both patients and healthcare providers. This study was a one-year retrospective chart review with data collected during the period... -
Agromorphological diversity of South African sorghum genotypes assessed through quantitative and qualitative phenotypic traits
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Alina M Mofokeng --- Agricultural Research Council–Grain Crops Institute, South Africa Hussein A Shimelis --- School of Agricultural, Earth and Environmental Sciences, African Centre for Crop Improvement, South Africa Mark D Laing --- School of Agricultural, Earth and Environmental Sciences, African Centre for Crop Improvement, South AfricaKnowledge of genetic diversity among sorghum genotypes is essential for their efficient utilisation in plant breeding schemes and effective conservation. The objective of this study was to assess the level of genetic diversity present among South African sorghum genotypes using... -
Acoustic communication and reproductive behaviour in the aquatic frog Xenopus laevis (Pipidae), a field study
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Achim Ringeis --- , , Germany Birgit Krumscheid --- , , Germany Phillip J. Bishop --- , , New Zealand Christian de Vries --- , , Germany Andreas Elepfandt --- , , GermanyWe studied the acoustic and reproductive behaviour of the clawed frog, Xenopus laevis, in a pond with clear water in South Africa over a period of two months. It contained 21 adult males and females. Each was marked with a... -
A study of the knowledge and practice of lifestyle modification in patients with type 2 diabetes mellitus in Middelburg sub-district of Mpumalanga
Item type: Journal Article • Journal: South African Family Practice • Authors: AE Umeh --- Department of Family Medicine, South Africa L Nkombua --- Department of Family Medicine, South AfricaIntroduction: Diabetes mellitus is one of the most common clinical conditions seen by family physicians in their daily practice. They are constantly confronted with the burden of caring for poorly controlled and poorly adherent patients presenting with preventable debilitating, disabling... -
Comparative genetic structure in two high-dispersal prawn species from the south-west Indian Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: TK Mkare --- Kenya Marine and Fisheries Research Institute, Kenya JC Groeneveld --- Oceanographic Research Institute (ORI), South Africa PR Teske --- Centre for Ecological Genomics and Wildlife Conservation, Department of Zoology, South Africa CA Matthee --- Evolutionary Genomics Group, Department of Botany and Zoology, South AfricaThe penaeid prawns Fenneropenaeus indicus and Metapenaeus monoceros support shallow-water prawn fisheries in the south-west Indian Ocean. They are sympatric and have similar life histories, including developmental stages that depend on estuarine and marine habitats and a short dispersal duration... -
Trends and magnitudes of genotype × environment interaction variance components for yield, quality and agronomic traits among coastal short cycle sugarcane breeding populations
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Sphamandla Sengwayo --- South African Sugarcane Research Institute, South Africa Marvellous Zhou --- South African Sugarcane Research Institute, South Africa Maryke Labuschagne --- University of the Free State, South AfricaGenotype × environment interactions (G×E) can reduce the genetic contribution to the phenotype and increase minimum detectable differences, which eventually reduce selection precision. This study was conducted to determine the magnitudes and trends of G×E variance components for sugarcane yield,... -
Role of site in the mortality and production of Acacia mangium plantations in Indonesia
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Marcus Hardie --- Tasmanian Institute of Agriculture, University of Tasmania, Australia Nawari Akhmad --- Research and Development RAPP, APRIL Group, Indonesia Caroline Mohammed --- Tasmanian Institute of Agriculture, University of Tasmania, Australia Daniel Mendham --- CSIRO Ecosystem Sciences and Sustainable Agriculture Flagship, Australia Ross Corkrey --- Tasmanian Institute of Agriculture, University of Tasmania, Australia Abdul Gafur --- Research and Development RAPP, APRIL Group, Indonesia Sabar Siregar --- Research and Development RAPP, APRIL Group, IndonesiaIn Indonesia, Acacia mangium plantations exceed 1.6 Mha contributing approximately 3.5% of the country’s GDP. The viability of these plantations is increasingly threatened by fungal pathogens, insect pests, squirrels, monkeys, elephants and wind damage. Studies indicate that the problem is... -
Genotypic variation in tree growth and selected flavonoids in leaves of Cyclocarya paliurus
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Yanni Cao --- College of Forestry, China Bo Deng --- College of Forestry, China Shengzuo Fang --- College of Forestry, China Xulan Shang --- College of Forestry, China Xiangxiang Fu --- College of Forestry, China Wanxia Yang --- College of Forestry, ChinaCyclocarya paliurus is a valuable medicinal tree species in China. However, limited information is available on its genotype selection and cultivation for improvement of growth and health-promoting phytochemicals. To contribute to improved knowledge of the potential use of the species,... -
The Magnesium and Glucose (MAG) Study: the prevalence and effect of hypomagnesaemia on diabetes control in a regional hospital in KwaZulu-Natal
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: S Pillay --- University of KwaZulu-Natal, Edendale Hospital, South Africa JM Jansen van Vuuren --- University of KwaZulu-Natal, Edendale Hospital, South Africa CJ Jansen van Vuuren --- Pietermaritzburg Hospital Complex, South AfricaBackground: Diabetes mellitus (DM) poses a great burden of disease worldwide. The adverse effects of hypomagnesaemia (hypoMg2+) in patients with DM have been well described, with a higher prevalence of hypoMg2+ in patients with DM than in the general population... -
Sample-size determination and adherence in randomised controlled trials published in anaesthetic journals
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: M Nontshe --- Metropolitan Department of Anaesthetics, Critical Care and Pain Management, South Africa S Khan --- Metropolitan Department of Anaesthetics, Critical Care and Pain Management, South Africa T Mandebvu --- Metropolitan Department of Anaesthetics, Critical Care and Pain Management, South Africa B Merrifield --- Metropolitan Department of Anaesthetics, Critical Care and Pain Management, South Africa RN Rodseth --- Metropolitan Department of Anaesthetics, Critical Care and Pain Management, South AfricaBackground: Sample-size calculations are critical to ensure that randomised control trials return robust and reliable results. The estimated treatment effects used in these calculations is often significantly different from the actual treatment effect and can dramatically impact trial validity. -
Location and crop-year effects on sugarcane genotype performance for the coastal short cycle breeding programmes in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Sphamandla Sengwayo --- South African Sugarcane Research Institute, South Africa Marvellous Zhou --- South African Sugarcane Research Institute, South Africa Maryke Labuschagne --- Department of Plant Sciences, South AfricaGenotypes are tested in several environments to evaluate the influence of genotype × environment interactions prior to their release as cultivars. The objective of this study was to determine location and crop-year effects and their implications on coastal short cycle... -
Peatland substrates in northern KwaZulu-Natal: a study of the forming environments, properties and an approach towards classification
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Marvin Gabriel --- Faculty of Life Science, Germany Camelia Toader --- Faculty of Mathematics and Natural Sciences, Germany Franziska Faul --- Faculty of Earth and Environmental Sciences, Germany Niko Roßkopf --- Faculty of Life Science, Germany Piet-Louis Grundling --- Centre for Environmental Management, South Africa Cornelius Wilhelm van Huyssteen --- Department of Soil, Crop, and Climate Sciences, South Africa Jutta Zeitz --- Faculty of Life Science, GermanyPeatlands in South Africa are rare and fulfil important ecological functions but are threatened by degradation. Because of this peatlands have gained increasing attention from scientists during the last two decades. However, knowledge of the peatland substrates and the means... -
Phenotypic characterisation of potato (Solanum tuberosum) genotypes in Uganda
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Prossy Namugga --- African Centre for Crop Improvement, School of Agricultural, Earth and Environmental Sciences, South Africa Julia Sibiya --- African Centre for Crop Improvement, School of Agricultural, Earth and Environmental Sciences, South Africa Rob Melis --- African Centre for Crop Improvement, School of Agricultural, Earth and Environmental Sciences, South Africa Alex Barekye --- Kachwekano Zonal Agricultural Research and Development Institute, UgandaIdentification of genetic variation and interrelationships among germplasm collections is essential for parental selection and trait identification among parents for use in breeding programmes. The aim of this study was to characterise 48 potato genotypes to identify suitable parents for... -
Experience of a recreational diabetic day by a non-governmental organisation, T1 Diams, in Mauritius
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Pravesh Kumar Guness --- Department of Therapeutic Education, T1 Diams --- Department of Therapeutic Education,Background: T1 Diams, a non-profit organisation on the island of Mauritius, has been working on the implementation of therapeutic and educational activities for its members. It regularly organises a recreational diabetic day (‘Enjoy life’ or ‘T1 Diams en Balade’). -
Adherence of patients with type 2 diabetes mellitus with the SEMDSA lifestyle guidelines
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Amy Birkinshaw --- Department of Nutrition and Dietetics (G24), South Africa Riette Nel --- Department of Biostatistics, South Africa Corinna Walsh --- Department of Nutrition and Dietetics (G24), South AfricaBackground: Type 2 diabetes mellitus (T2DM) is considered to be the fastest growing chronic disease in the world and thus multi-sectoral, population-based strategies and approaches are needed to address the modifiable risk factors involved in the development and treatment of... -
Constructions of social selves living with HIV/AIDS: A Jungian phenomenological study
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Kathryn Nel --- Department of Psychology, South Africa Olivia Khensai Nkuna --- Department of Psychology, South Africa Saraswathie Govender --- Department of Psychology, South Africa Katlego Joy Hlokwe --- Department of Psychology, South AfricaThis study explored sense of social well-being influences on self-identity and the stigma and discrimination among people living with HIV/AIDS (PLWHA). Informants were 15 PLWHA from a rural background in a South African community (female = 87%, age range =... -
Identifying phenological functional types in savanna trees
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Nthambeleni D Masia --- Council for Scientific and Industrial Research, Natural Resources and the Environment, South Africa Nicola Stevens --- Global Change and Biodiversity Group, Department of Botany and Zoology, South Africa Sally Archibald --- Council for Scientific and Industrial Research, Natural Resources and the Environment, South AfricaSavannas are notable for the varied patterns of leaf display in the tree layer. Characterising this variation, and assessing the range of phenological strategies apparent in savanna ecosystems will be helpful for understanding savanna tree life-histories and their response to... -
Essential oil composition of Pentzia incana (Asteraceae), an important natural pasture plant in the Karoo region of South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Isabel M Hulley --- Department of Botany and Plant Biotechnology, South Africa Nicholas J Sadgrove --- Department of Botany and Plant Biotechnology, South Africa Patricia M Tilney --- Department of Botany and Plant Biotechnology, South Africa Gulmira Özek --- Department of Pharmacognosy, Faculty of Pharmacy, Turkey Suleyman Yur --- Medicinal Plant, Drug and Scientific Research Center, Turkey Temel Özek --- Department of Pharmacognosy, Faculty of Pharmacy, Turkey Kemal Hüsnü Can Başer --- Department of Pharmacognosy, Faculty of Pharmacy, Northern Cyprus Ben-Erik van Wyk --- Department of Botany and Plant Biotechnology, South AfricaPentzia incana is one of the most important of all natural pasture plants in the dry interior (Karoo) region of South Africa. This highly aromatic shrub is thought to be responsible for the distinctive flavour of Karoo lamb (a registered... -
Should all patients on insulin be using continuous glucose monitoring?
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Larry A Distiller --- Centre for Diabetes and Endocrinology, South AfricaContinuous glucose monitoring (CGM) is being used increasingly both in patients on insulin pumps (CSII) and more recently in those on multiple injection regimens (MIR). This review lists the CGM devices available in South Africa and explores the literature supporting... -
Employees’ experiences of the stigma of HIV in a retail organisation: secrecy, privacy or trust?
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Kgope P Moalusi --- Industrial and Organisational Psychology, South AfricaThis study unveiled the participants’ experiences of HIV-related stigma in a retail organisation located in the Western Cape province of South Africa. A qualitative approach was adopted because of its appropriateness for unravelling subjective phenomena such as employees’ experiences of... -
Social support effects on diabetes management by South African emerging adults: A replication and extension study
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Elné Visagie --- Compres, School for Psychosocial Health, South Africa Esmé van Rensburg --- Compres, School for Psychosocial Health, South Africa Elmarí Deacon --- Optentia, School for Psychosocial Health, South AfricaThis study aimed to explore and describe the role of social support in successful living with type 1 diabetes. Informants were eight emerging adults with well-controlled type 1 diabetes (females = 5; white = 7, African = 1; mean time since diagnosis = 8.5 years, SD time since... -
Comparing family with individual genotype breeding parameters for cane yield in sugarcane populations
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Ntombokulunga W Mbuma --- South African Sugarcane Research Institute, South Africa Marvellous M Zhou --- South African Sugarcane Research Institute, South Africa Rouxlene van der Merwe --- Department of Plant Sciences, South AfricaFamily selection is the positive advancement of all progenies from a cross and is widely practiced in breeding for sugarcane and other crops. The objective of this study was to compare family with individual genotype selection (IGS) for cane yield... -
Central obesity is an independent risk factor of poor glycaemic control at Dr George Mukhari Academic Hospital
Item type: Journal Article • Journal: South African Family Practice • Authors: Tsakani Stanford Mashele --- Department of Internal Medicine, School of Medicine, South Africa Motetelo Alfred Mogale --- Department of Biochemistry, School of Pathology & Pre-Clinical Sciences, South Africa Olakunle Adewunmi Towobola --- Department of Internal Medicine, School of Medicine, South Africa Mmampenani Florence Moshesh --- Department of Internal Medicine, School of Medicine, South AfricaBackground: Results of previous studies on the effect on glycaemic control of anthropometric measures of obesity, some economic status variables and the presence of metabolic syndrome are not consistent and appear to differ among health institutions. The status of glycaemic... -
An artificial inoculation protocol for Uromycladium acaciae, cause of a serious disease of Acacia mearnsii in southern Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Stuart Fraser --- Department of Plant and Soil Sciences, Tree Protection Co-operative Programme, Forestry and Agricultural Biotechnology Institute, Faculty of Natural and Agricultural Sciences, South Africa Alistair R McTaggart --- Department of Plant and Soil Sciences, Tree Protection Co-operative Programme, Forestry and Agricultural Biotechnology Institute, Faculty of Natural and Agricultural Sciences, South Africa Julian Moreno Chan --- Institute for Commercial Forestry Research, South Africa Thobile Nxumalo --- Institute for Commercial Forestry Research, South Africa Louise S Shuey --- Department of Genetics, Forestry and Agricultural Biotechnology Institute, Faculty of Natural and Agricultural Sciences, South Africa Michael J Wingfield --- Department of Plant and Soil Sciences, Tree Protection Co-operative Programme, Forestry and Agricultural Biotechnology Institute, Faculty of Natural and Agricultural Sciences, South Africa Jolanda Roux --- Department of Plant and Soil Sciences, Tree Protection Co-operative Programme, Forestry and Agricultural Biotechnology Institute, Faculty of Natural and Agricultural Sciences, South AfricaUromycladium acaciae is the cause of a severe wattle rust epidemic in plantations of Acacia mearnsii (black wattle) in southern Africa. Research on the biology of this damaging rust is assisting in the development of control strategies. One strategy under... -
Lesion size induced by Chrysoporthe fungal pathogens varies between Eucalyptus species and geographic locations in Zambia
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Donald Chungu --- Department of Plant and Environmental Sciences, School of Natural Resources, Zambia Jedrick Siyingwa --- Department of Plant and Environmental Sciences, School of Natural Resources, Zambia Phillimon Ng’andwe --- Department of Biomaterial Science and Technology, School of Natural Resources, Zambia Bertha Chitala Chungu --- School of Business, ZambiaChrysoporthe canker disease is one of the serious threats facing planted Eucalyptus in southern Africa. In order to manage this disease, planting of less susceptible species of Eucalyptus has been promoted in many countries but it is not clear which... -
The effect of fire history on soil nutrients and soil organic carbon in a semi-arid savanna woodland, central Namibia
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Elise Nghalipo --- Department of Agriculture and Natural Resources Sciences, Namibia Dave Joubert --- Department of Agriculture and Natural Resources Sciences, Namibia Heather Throop --- School of Earth and Space Exploration and School of Life Sciences, USA Alexander Groengroeft --- Institute of Soil Science, GermanyFire is an integral part of savanna ecosystems that has shaped these systems since the Miocene. Substantial uncertainty about fire effects in semi-arid ecosystems exists. Fire may affect ecosystem productivity directly through nutrient volatilisation, increased mineralisation and altering organic matter... -
Stakeholders’ perceptions of dietary and related self-management challenges and education programme preferences for type 2 diabetes adults
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: JW Muchiri --- Department of Human Nutrition, South Africa GJ Gericke --- Department of Human Nutrition, South Africa P Rheeder --- Department of Internal Medicine, South AfricaObjective: To inform the adaptation of an intervention from a primary healthcare setting to a tertiary setting, the dietary and related self-management challenges and education programme preferences of adults with type 2 diabetes (T2DM) were explored. -
Hypogonadism and associated risk factors in male patients with type 2 diabetes mellitus attending the diabetic clinic of Tikur Anbessa Specialized Teaching Hospital, Addis Ababa, Ethiopia
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Sisay Teka --- College of Medicine and Health Sciences, Ethiopia Samuel Kinde --- College of Health Sciences, Addis Ababa University, Ethiopia Gobena Dedefo --- College of Health Sciences, Addis Ababa University, Ethiopia Kissi Mudi --- Ethiopian Public Health Institute, Ethiopia Getahun Tarekegn --- Tikur Anbesa Specialized Teaching Hospital, EthiopiaBackground: A high prevalence of hypogonadism among men with type 2 diabetes mellitus (T2DM) has been reported worldwide. This in turn creates a substantial public health burden in terms of inadequate sexual function and potential infertility. However, the status of... -
Screening of Alectra vogelii ecotypes on legume and non-legume crop species in Malawi
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: CK Phiri --- Crop and Soil Sciences Department, Malawi VH Kabambe --- Crop and Soil Sciences Department, Malawi J Bokosi --- Crop and Soil Sciences Department, Malawi P Mumba --- Basic Sciences Department, MalawiThe parasitic angiosperm Alectra vogelii Benth. is a growing problem in Malawi, particularly with the current emphasis on legume crops. Therefore, a screen-house study was conducted to determine the virulence of different ecotypes of A. vogelii and to confirm infestation... -
Genomic resources for the spotted ragged-tooth shark Carcharias taurus
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JD Klein --- Centre for Ecological Genomics and Wildlife Conservation, Department of Zoology, South Africa AE Bester-van der Merwe --- Molecular Breeding and Biodiversity Group, Department of Genetics, South Africa ML Dicken --- KwaZulu-Natal Sharks Board, South Africa A Emami-Khoyi --- Centre for Ecological Genomics and Wildlife Conservation, Department of Zoology, South Africa KL Mmonwa --- KwaZulu-Natal Sharks Board, South Africa PR Teske --- Centre for Ecological Genomics and Wildlife Conservation, Department of Zoology, South AfricaGenomic data can be a useful tool in the management and conservation of biodiversity. Here, we report the development of genomic resources for the spotted ragged-tooth shark Carcharias taurus using genome-wide DNA data from Illumina next-generation sequencing. We explored two... -
Spermatozoa morphology and ultrastructure in Nile perch, Lates niloticus (Linnaeus, 1758)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: D Kahwa --- Department of Wildlife and Aquatic Resources, Uganda E Nyatia --- Department of Biotechnical and Diagnostic Services, Uganda J Rutaisire --- Aquaculture Research and Development Centre, Uganda H Kaiser --- Department of Ichthyology and Fisheries Science, South AfricaLates niloticus is a valuable commercial fish species with good potential for aquaculture. However, there is limited information on the type and structure of the Nile perch spermatozoon, which could potentially aid in culture of this species. Here, we describe... -
Genetic diversity of endangered sandalwood (Osyris lanceolata) populations in Kenya using ISSR molecular markers
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: KP Andiego --- Department of Forestry and Wood Science, Kenya OG Dangasuk --- Department of Biological Sciences, Kenya DW Odee --- Biotechnology Laboratory, Kenya FS Omondi --- Biotechnology Laboratory, Kenya DF Otieno --- Department of Biological Sciences, Kenya BK Balozi --- Department of Forestry and Wood Science, KenyaOsyris lanceolata is an evergreen, drought tolerant tropical African tree species belonging to the family Santalaceae. It is endangered, owing to overexploitation for its essential oil used in cosmetics and pharmaceutical industries. The study aimed at determining: (1) the genetic... -
Developing pathways to improve smallholder agricultural productivity through ecological intensification technologies in semi-arid Limpopo, South Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Farirai Rusere --- Climate System Analysis Group, Department of Environmental and Geographical Science, South Africa Siyabusa Mkuhlani --- Climate System Analysis Group, Department of Environmental and Geographical Science, South Africa Olivier Crespo --- Climate System Analysis Group, Department of Environmental and Geographical Science, South Africa Lynn V. Dicks --- School of Biological Sciences, UKAgriculture faces an enormous global challenge of feeding nine billion people by 2050. This means a comprehensive intensification of agriculture is required. Ecological intensification is gaining momentum as a clearly defined vision for increasing agriculture productivity and sustainability. How ecological... -
Manuscripts submitted to South African Family Practice by the School of Medicine, University of the Free State: journal response types and times
Item type: Journal Article • Journal: South African Family Practice • Authors: Gina Joubert --- Department of Biostatistics, South Africa Theanette Mulder --- School of Medicine, South Africa Wilhelm Johannes Steinberg --- Department of Family Medicine, South Africa Johan Botes --- Department of Family Medicine, South AfricaBackground: For authors, manuscript submission can seem fraught with obstacles. The present authors describe their experience with South African Family Practice (SAFP) regarding response types and times, compared with other SA-based journals. -
Seasonal variation in diet and prey availability in the wall lizard Podarcis vaucheri (Boulenger, 1905) from the Djurdjura Mountains, northern Algeria
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Rabah Mamou --- , France Faïza Marniche --- , , Algeria Mansour Amroun --- , , Algeria Jean-Marie Exbrayat --- , France Anthony Herrel --- , FranceWe studied the composition and seasonal changes in diet and prey selection in the wall lizard Podarcis vaucheri of the Djurdjura Mountains throughout its activity period, from April to October 2014. The analysis of 238 faecal pellets revealed 1 206... -
Factors that influence firewood use among electrified Bapedi households of Senwabarwana Villages, South Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Khomotso Semenya --- College of Agriculture and Environmental Sciences, Republic of South Africa Fannie Machete --- College of Agriculture and Environmental Sciences, Republic of South AfricaThis paper presents the factors that influence firewood use among electrified Bapedi households in Senwabarwana Villages. The study follows explanatory and exploratory methods of data analysis, through survey (structured interviews) and meta-analysis. In-depth content analysis was followed to establish trends... -
Genotype-by-environment interaction and yield stability of sunflower hybrids across production environments in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Safiah Ma’ali --- Agricultural Research Council–Grain Crops, South Africa William Makgoga --- Agricultural Research Council–Grain Crops, South Africa Jan Erasmus --- Agricultural Research Council–Grain Crops, South Africa Sophie Swanepoel --- Agricultural Research Council–Grain Crops, South AfricaGenotype-by-environment interaction (GEI) is typical in multi-environment trials, which complicates the identification of superior genotypes, making selection and recommendation of new sunflower genotypes for different environments challenging and expensive. The objectives of this study were to investigate the GEI, identify... -
Genotype-by-environment interaction of grain yield among candidate dryland wheat genotypes
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Miriam Matlala --- African Centre for Crop Improvement, South Africa Hussein Shimelis --- African Centre for Crop Improvement, South Africa Jacob Mashilo --- African Centre for Crop Improvement, South AfricaGenotype-by-environment interaction (GEI) analysis is an essential step to identify superior and stable yielding genotypes and suitable test environments for cultivar development. The objective of the present study was to examine GEI of grain yield among candidate dryland wheat genotypes... -
Relationship between magnesium and lipids in patients with diabetes mellitus
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: JM Jansen van Vuuren --- Northdale Hospital, South Africa S Pillay --- Edendale Hospital, South Africa CJ Jansen van Vuuren --- uMgungundlovu Health District, South AfricaIntroduction: Non-communicable diseases, especially cardiovascular diseases (CVD), have become more prevalent across the world, more so in developing countries. Novel methods in the management of CVD risks in patients with diabetes mellitus, type 2 (DM2) requires constant attention and an... -
Incidence of hypoglycaemia in the South African population with diabetes: results from the IDMPS Wave 7 study
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Hilton Kaplan --- Centre of Diabetes and Endocrinology, South Africa Aslam Amod --- Department of Diabetes and Endocrinology, South Africa Francois H van Zyl --- Cert Endocrinology and Metabolism (SA), South Africa Jeevren Reddy --- Stanger Manor, South Africa Alet van Tonder --- Sanofi, South Africa Ellina Tsymbal --- Sanofi, South Africa Alicia McMaster --- Sanofi, South AfricaObjectives: Management of diabetes is a balancing act of preventing a state of hyperglycaemia while avoiding episodes of hypoglycaemia. Limited information is currently available on the incidence of hypoglycaemia in South African people diagnosed with diabetes. Data regarding the management... -
Diabetes-related knowledge, attitude and practices (KAP) of adult patients with type 2 diabetes mellitus in the Free State province, South Africa
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Maretha le Roux --- Department of Nutrition and Dietetics, Faculty of Health Sciences, South Africa Corinna Walsh --- Department of Nutrition and Dietetics, Faculty of Health Sciences, South Africa Marianne Reid --- School of Nursing, Faculty of Health Sciences, South Africa Jacques Raubenheimer --- Department of Biostatistics, Faculty of Health Sciences, South AfricaIntroduction: Type 2 diabetes mellitus (T2DM) is a global health problem with high morbidity and mortality in patients who are mostly still economically active. The growing incidence and health implications for those affected make T2DM a major public health issue. -
Evidence for multiple paternity and confirmation of an Indo-Pacific origin of blacktip shark Carcharhinus limbatus occurring in South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AE Bester-van der Merwe --- Molecular Breeding and Biodiversity Group, Department of Genetics, South Africa SN Maduna --- Molecular Breeding and Biodiversity Group, Department of Genetics, South Africa KL Hull --- Molecular Breeding and Biodiversity Group, Department of Genetics, South Africa J Bell --- Molecular Breeding and Biodiversity Group, Department of Genetics, South Africa C Rossouw --- Molecular Breeding and Biodiversity Group, Department of Genetics, South Africa SP Wintner --- KwaZulu-Natal Sharks Board, South AfricaThe blacktip shark Carcharhinus limbatus is a cosmopolitan species found in warm-temperate, subtropical and tropical waters around the world. The research here aimed to assess whether multiple paternity exists in South African C. limbatus and to confirm phylogeographic patterns previously... -
Hospitalisation of Type 2 diabetes mellitus patients with and without major depressive disorder in a private managed healthcare organisation
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: L Naidoo --- Department of Pharmacy and Pharmacology, South Africa N Butkow --- Department of Pharmacy and Pharmacology, South Africa P Barnard-Ashton --- Department of Pharmacy and Pharmacology, South Africa E Libhaber --- Department of Cardiology, School of Clinical Medicine, South AfricaBackground: The relationship between Type 2 diabetes mellitus (T2DM) and associated co-morbidities, particularly major depressive disorder (MDD), is poorly acknowledged in chronic disease management practices in South Africa. Managed healthcare costs and hospitalisation rates may be influenced by the discrete... -
Nutritional status, glycaemic control and barriers to treatment compliance among patients with type 2 diabetes attending public primary health clinics in Maseru, Lesotho
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Louise van den Berg --- Department of Nutrition and Dietetics, South Africa Mohlakotsana Mokhehle --- Department of Nutrition and Dietetics, South Africa Jacques Raubenheimer --- Department of Biostatistics, South AfricaObjectives: To evaluate the nutritional status, glycaemic control and barriers to treatment compliance of outpatients with type 2 diabetes mellitus (T2DM) attending two public primary health clinics in Maseru, Lesotho. -
African continental integration scholarly literature review: Advances, gaps, and opportunities
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Sarah Katz-Lavigne --- Norman Paterson School of International Affairs, Canada Moses N. Kiggundu --- Sprott School of Business, CanadaDeeper continental integration is considered critical for Africa’s future growth, development and transformation. This paper reports on the results of a comprehensive review of the scholarly literature on Africa’s continental integration dating back to the 1960s. We wanted to focus... -
Diversity analysis of mungbean (Vigna radiata) germplasm using a semi-graphical technique
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Hafiz Basheer Ahmad --- Oilseed Research Institute, Ayub Agricultural Research Institute, Pakistan Salsabeel Rauf --- Oilseed Research Institute, Ayub Agricultural Research Institute, Pakistan Waqas Shafqat Chattha --- Department of Plant Breeding and Genetics, Pakistan Busharat Hussain --- Pulses Research Institute, Ayub Agricultural Research Institute, Pakistan Iqtidar Hussain --- Department of Agronomy, Pakistan Irfan Rasool --- Pulses Research Institute, Ayub Agricultural Research Institute, PakistanGrain legumes such as mungbean are often co-cultivated with cereals. The genetic diversity among 84 mungbean genotypes was studied using metroglyph and principal component analysis. Data were recorded for days to flowering and maturity, plant height, pods per plant, clusters... -
Pattern of dyslipidaemia in relation to statin use in patients with type 2 diabetes mellitus attending a tertiary care hospital
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: S Naidoo --- Private Practice, South Africa FJ Raal --- Division of Endocrinology & Metabolism, Faculty of Health Sciences, South AfricaIntroduction: Atherosclerotic cardiovascular disease is a major contributor to morbidity and mortality in diabetic patients. Strict goal-directed lipid control in patients with diabetes is associated with better cardiovascular outcomes. -
Grass community responses to drought in an African savanna
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: C Wigley-Coetsee --- , South Africa AC Staver --- , United StatesDrought is often discussed as a major perturbation in savanna ecosystems, associated with lasting shifts in savanna structure and functioning. However, historically, droughts have occurred frequently in southern African savannas, suggesting that plants might benefit from being resilient to drought... -
Optimising the number of test sites, crop-years and replications to maximize post-release testing efficiencies
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Sbongeleni Warren Duma --- School of Agricultural, Earth and Environmental Sciences, South Africa Hussein Shimelis --- School of Agricultural, Earth and Environmental Sciences, South Africa Sanesh Ramburan --- School of Agricultural, Earth and Environmental Sciences, South Africa Admire Isaac Tichafa Shayanowako --- School of Agricultural, Earth and Environmental Sciences, South AfricaThe South African sugar industry develops commercial sugarcane cultivars across multiple testing sites, crop-years and replications. The extent of such parameters has not been well quantified for optimum breeding and resource allocation. The objective of this study was to identify... -
Seasonal changes of copper and zinc concentrations in browse saltbush (Atriplex canescens (Pursh) Nutt.) from the Algerian arid rangelands
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Bouzid Nedjimi --- , AlgeriaThe study aimed to elucidating the seasonal variations of copper (Cu2+) and zinc (Zn2+) contents occurring in Atriplex canescens shrubs, as well as in surrounding soil. Cu and Zn concentrations were determined using X-ray fluorescence (XRF) spectrometry. Data were compared... -
Trends in glycaemic control and morbidity over 10 years in patients with type 1 diabetes mellitus at Inkosi Albert Luthuli Central Hospital
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Muhammed Zaid Hoosen --- , South Africa Imran M Paruk --- , South Africa Fraser J Pirie --- , South Africa Ayesha A Motala --- , South AfricaAim: To assess control and morbidity in patients with type 1 diabetes mellitus (T1 attending a tertiary adult diabetes clinic in Durban, South Africa. -
Britain and Brexit: imagining an essentialist sense of “Britishness” and navigating amongst “the British”
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Nigel Rapport --- , United KingdomIn his analysis of the 1956 Hungarian uprising against Soviet control, Georges Devereux argued that social movements exist not because members exhibit attitudinal uniformity but because in the “same” collective act individuals serendipitously find a socially acceptable expression for their... -
Genetic differentiation of selected drought and heat tolerant wheat genotypes using simple sequence repeat markers and agronomic traits
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Sonto Silindile Mkhabela --- , South Africa Hussein Shimelis --- , South Africa Jacob Mashilo --- , South AfricaDevelopment of wheat (Triticum aestivum L.) varieties with increased yield potentials that are adapted to drought and heat stresses requires genetically differentiated and complementary parents. The present study established genetic profiles of heat and drought tolerant wheat genotypes through SSR... -
Numbers of invasive House Sparrows Passer domesticus in a rural landscape of Limpopo province, South Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Cavin T Shivambu --- , South Africa Ndivhuwo Shivambu --- , South Africa Takalani Nelufule --- , South Africa Moleseng C Moshobane --- , South Africa Manqoba M Zungu --- , South Africa Colleen T Downs --- , South AfricaThe House Sparrow Passer domesticus is recognised as one of the commonest avian invasive species globally, with its occurrence associated with human existence. However, relatively little on population sizes of this species in rural landscapes has been documented. The study... -
High genetic diversity and limited spatial structure in an endangered, endemic South African sparid, the red steenbras Petrus rupestris
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: G Gouws --- , South Africa SE Kerwath --- , South Africa WM Potts --- , South Africa NC James --- , South Africa NG Vine --- , South Africa PD Cowley --- , South AfricaThe red steenbras Petrus rupestris is endemic to South Africa, occurring from False Bay in the Western Cape Province to St Lucia in the province of KwaZulu-Natal. This species, the largest member of the family Sparidae, has undergone a substantial... -
Spatial and ontogenetic variability in the diet and trophic ecology of two co-occurring catsharks (Scyliorhinidae) off South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: GM van der Heever --- , South Africa CD van der Lingen --- , South Africa RW Leslie --- , South Africa MJ Gibbons --- , South AfricaThe Izak catshark Holohalaelurus regani and the yellow-spotted catshark Scyliorhinus capensis both occur over the continental shelf around South Africa and are often caught together as bycatch in demersal trawls. Yet our understanding of their diet is fragmented, which makes... -
Acute effects of single-bout exercise in adults with type 2 diabetes: a systematic review of randomised controlled trials and controlled crossover trials
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Dominic Hicks --- , South Africa Robert C Hickner --- , South Africa Usha Govinden --- , South Africa Takshita Sookan --- , South AfricaBackground: Exercise interventions improve type 2 diabetes (T2D). Published randomised control trials and crossover control trials were systematically examined to establish the differences in the effect of single-bout exercise on glucose control and insulin sensitivity in individuals with type 2... -
The impact of a face-to-face peer-support intervention on adults with type 2 diabetes: a cluster-randomised trial
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Melanie Pienaar --- , South Africa Marianne Reid --- , South Africa Mariette Nel --- , South Africa -
Impact of livestock grazing intensity on plant diversity of montane grassland in the northern Drakensberg, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: TA Shezi --- , South Africa TG O’Connor --- , South Africa ETF Witkowski --- , South AfricaCommunal livestock grazing is expected to impact botanical composition and plant diversity of Drakensberg montane grasslands. Accordingly, a grazing gradient extending outward from kraals, and fence-line contrasts between communal rangeland and protected areas (Golden Gate Highlands National Park and Royal... -
Population and breeding patterns of the pest rodent: Mastomys natalensis in a maize dominated agroecosystem in Lake Victoria crescent zone, Eastern Uganda
Item type: Journal Article • Journal: African Zoology • Authors: Alex Mayamba --- , Uganda Robert Modest Byamungu --- , Tanzania Herwig Leirs --- , Belgium Isabirye Moses --- , Uganda Rhodes H Makundi --- , Tanzania Didas N Kimaro --- , Tanzania Apia W Massawe --- , Tanzania David Kifumba --- , Uganda Alice Nakiyemba --- , Uganda Mshaka E Mdangi --- , Tanzania Brian E Isabirye --- , Kenya Loth S Mulungu --- , TanzaniaMultimammate mice (Mastomys natalensis) are a key rodent pest species to cereal crop production in Sub-Saharan Africa. This study aimed at generating information on the population fluctuation and breeding patterns of M. natalensis in a maize dominated agro-ecosystem in the... -
Demersal fish communities in KwaZulu-Natal, South Africa, indicate partial congruence with proposed conservation biozones
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: WN Dalton --- , South Africa SN Porter --- , South Africa T-C Livingstone --- , South Africa BQ Mann --- , South AfricaThe KwaZulu-Natal shelf, on the east coast of South Africa, is inhabited by diverse communities of demersal fishes; however, previous studies deeper than 30 m have largely investigated these with extractive techniques. Using baited remote underwater videos (BRUVs), this study... -
Adapting a diabetes nutrition education programme for adults with type 2 diabetes from a primary to tertiary healthcare setting
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Jane W Muchiri --- , South Africa Gerda J Gericke --- , South Africa Paul Rheeder --- , South Africa -
Nerve conduction and its correlations with duration of diabetes mellitus and glycosylated haemoglobin in type 2 diabetes mellitus (T2DM)
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Wissam S Hamid --- , Sudan Humeda S Ahmed --- , Sudan Mona A Osman --- , Sudan Rasha Babiker --- , Sudan -
Patterns of diabetes management in South Africa: baseline and 24-month data from the South African cohort of the DISCOVER study
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: A Kok --- , South Africa A Hariram --- , South Africa D Webb --- , South Africa A Amod --- , South Africa -
Mental flexibility (set-shifting) deficits in children with ADHD: A replication and extension study
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Tshikani Theodore Boshomane --- , South Africa Basil Joseph Pillay --- , South Africa Anneke Meyer --- , South AfricaThe study investigated set-shifting impairment differences in children by Attention Deficit Hyperactive Disorder (ADHD) subtype compared to neurotypical peers. The sample consisted of 156 primary school children from the Limpopo Province of South Africa (ADHD = 78, neurotypical = 78)... -
IDMPS Wave 7 Africa
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: H Kaplan --- , South Africa A Amod --- , Durban, South Africa A Chadli --- , Morocco JC Mbanya --- , Cameroon A McMaster --- , South Africa K Naidoo --- , South Africa MG Musa --- , South AfricaDiabetes is a major economic burden and has rapidly increased worldwide. Type 2 diabetes, which accounts for 90–95% of cases, has increased particularly in the developing world. Early treatment intensification may decrease the morbidity and mortality of diabetes by lowering... -
The distribution of dinoflagellate cyst assemblages in recent sediments of the Oualidia Lagoon, Morocco, with a focus on toxic species
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: K Chaira --- , Morocco H Rhinane --- , Morocco B Ennaffah --- , Morocco S Maimouni --- , Morocco R Sagou --- , Morocco S Loulad --- , Morocco A BenMhamed --- , Morocco A Agouzouk --- , Morocco S BenBrahim --- , Morocco E Masseret --- , France M Laabir --- , FranceHarmful algal blooms (HABs) are becoming widely distributed and more frequent, threatening socioecosystems and human health. We determined species composition, abundance and spatial distribution of dinoflagellate cysts in the upper sediment of the Oualidia Lagoon located on the Atlantic coast... -
Gould’s Icones avium (1837–1838) and vagrancy in the Pennant-winged Nightjar Caprimulgus vexillarius — could it wander to islands in the Indian Ocean?
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Guy M Kirwan --- , United StatesThe Pennant-winged Nightjar Caprimulgus vexillarius was described in 1838 by John Gould from a male in breeding plumage, but its given locality, various islands in the Indian Ocean and Red Sea coasts, was eventually deemed unreliable and replaced in the... -
Weed species diversity and shifts in Conservation Agriculture-based crop rotation systems on the Highveld area of South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Elbé Hugo --- , South Africa Maryke Craven --- , South Africa Andries A Nel --- , South AfricaThe occurrence and infestation levels of weed species are known to vary greatly within Conservation Agriculture (CA) systems as weed species will react differently to different habitats. Two on-farm CA trial sites, near Buffelsvallei and Viljoenskroon respectively, were established during... -
Increased resolution of soils information through morphon segmentation of the Korentepoort mountain catchment
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: GJ Malan --- , South Africa WP De Clercq --- , South Africa AB Rozanov --- , South Africa C Clarke --- , South Africa H Helness --- , Norway S Damman --- , Norway N Elema --- , South Africa J Atkinson --- , South AfricaRecent climate instability necessitates a fresh approach to water cycle services in the Hessequa municipal region. Attention is drawn to impacts on water storage in this region, and an assessment of the current status is necessary. Land-use change and soil... -
Teacher-humour types and college students’ academic performance in online teaching: The mediating role of academic interest
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Runfeng Luo --- , China Qiqi Zhan --- , ChinaWe investigated the relationship between teacher-humour types and academic performance in online learning and the role of student academic interest in that relationship. Our study participants were 2 401 college students from 22 universities across China (female =68.1 %, mean... -
Long-term field study of the behaviour of Xenopus laevis (Pipidae) in a small dam
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Andreas Elepfandt --- Humboldt-Universität zu Berlin, Inst. Biologie, Germany Alexander Gutsche --- Humboldt-Universität zu Berlin, Inst. Biologie, Germany Werner J Fischer --- Universität Konstanz, Fak. Biologie, Germany Wera Leujak --- Humboldt-Universität zu Berlin, Inst. Biologie, Germany Phillip J Bishop --- University of the Witwatersrand, South AfricaA study of the behaviour of Xenopus laevis in a small dam in South Africa was continued annually from 1992 until 1999. All individuals were tagged. The annual number of frogs varied between 22 and 109 by migration. The sex... -
Exploring the role of the biokineticist in diabetes self-management: a survey of patients’ knowledge, attitudes and perceptions about exercise
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: T Sookan --- , South Africa A Vaizie --- , South Africa T Pillay --- , South Africa S Moodley --- , South Africa S Naidoo --- , South Africa K Naidoo --- , South AfricaBackground: Self-management of type 2 diabetes mellitus (T2DM) in South Africa (SA) is sub-optimal, with exercise reported to be the least employed modality of self-management. This study aimed to evaluate the knowledge, attitudes and perceptions of T2DM patients regarding T2DM... -
Total testosterone level may have no influence on the occurrence and severity of erectile dysfunction in males aged between 30 and 60 years living with type 2 diabetes
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Martine Claude Etoa Etoga --- , Yaoundé, Cameroon Doris Bibi Essama --- , Yaoundé, Cameroon Achille Aurèle Mbassi --- , Yaoundé, Cameroon Jan René Nkeck --- , Yaoundé, Cameroon Francine Mendane Mekobe --- , Yaoundé, Cameroon Mesmin Dehayem --- , Yaoundé, Cameroon Ama Moor Vicky --- , Yaoundé, Cameroon Eugène Sobngwi --- , Yaoundé, Cameroon Jean Claude Mbanya --- , Yaoundé, CameroonBackground: Erectile dysfunction is the most common sexual disorder in type 2 diabetes. Its pathogenesis may involve various disturbances including endothelial dysfunction and dysautonomia. The involvement of a low testosterone level is still debated. The aim of this study was... -
Carbohydrate counting in type 1 diabetes mellitus: dietitians’ perceptions, training and barriers to use
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Megan Esmè Dimitriades --- , South Africa Kirthee Pillay --- , South Africa -
Prevalence study of type 2 diabetes mellitus in the Ashanti region of Ghana: a systematic review of risk factors
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Daniel Katey --- , Ghana Abigail Akua Addo --- , Ghana Kabila Abass --- , Ghana Anthony Kwame Morgan --- , Ghana -
Using a nurse-driven and home-based telehealth intervention to improve insulin therapy for people with type 2 diabetes in primary care: a feasibility study
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Patrick Ngassa Piotie --- , South Africa Paola Wood --- , South Africa Jane W Muchiri --- , South Africa Elizabeth M Webb --- , South Africa Paul Rheeder --- , South Africa -
Are fathers involved in diabetes management? A rapid review
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Simphiwe Hope Mathole --- North-West University, South Africa Elmari Deacon --- North-West University, South Africa Esmé van Rensburg --- North-West University, South AfricaThis rapid review aimed to synthesise the evidence on father involvement in managing their child's type 1 diabetes. We identified eight articles from EBSCO, Science Direct, Academic Search Premier, Psyclnfo, PsycArticles, and Google Scholar. Studies were included if they provided... -
Helly-type results for 3-disjoint families of convex bodies in the plane
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Zokhrab Mustafaev --- University of Houston-Clear Lake, USA Jamesley Norvil --- University of Houston-Clear Lake, USAIn this note, we prove that a family of non-overlapping, 3-disjoint convex bodies in the plane with the property S(n) will also have the property S(n + 1) for n ≥ 5. This result leads confirming the conjecture of Revenko-Soltan. -
Multidimensional Kantorovich modifications of exponential sampling series
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Tuncer Acar --- Selcuk University, Turkey Sadettin Kursun --- Selcuk University, Turkey Metin Turgay --- Selcuk University, TurkeyThis paper is devoted to construction of multidimensional Kantorovich modifications of exponential sampling series, which allows to approximate suitable measurable functions by considering their mean values on just one section of the function involved. Approximation behaviour of newly constructed operators... -
On q-analogs of Struve functions
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Karima M. Oraby --- Suez University, Egypt Zeinab S.I. Mansour --- Cairo University, EgyptIn this paper, we introduce q-analogs of the Struve-Bessel functions in terms of q-sine functions. We study the reality of the zeros of the q-Struve Bessel functions and their properties. Also, the interlacing of the zeros of the q-Struve Bessel... -
Negative stereotypes examined through the HIV and AIDS discourse: qualitative findings from white young people in Johannesburg, South Africa
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Mzikazi Nduna --- Department of Psychology, University of the Witwatersrand, Jacky Mendes --- Department of Psychology, University of the Witwatersrand,Previous studies reporting perceptions of HIV and AIDS by white youth in South Africa suggest both explicit and implicit racial stereotypes and negative attitudes. This paper contributes to the literature on the discourse of racial stereotypes found in discussions about... -
On Bufo pantherinus A. Smith, 1828 (Anura: Bufonidae), the leopard toad of the southwestern Cape, South Africa, with the designation of a neotype
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: JohnC. Poynton --- , UK Angelo J.L. Lambiris --- University of Durban-Westville, South AfricaThe leopard toad of the southwestern tip of Africa has appeared under the names Bufo pantherinus, Bufo cruciger, Bufo regularis and Bufo pardalis. This paper examines the nomenclatural confusion and proposes a neotype of B. pantherinus A. Smith, 1828, to... -
Comments on the types and type localities of South African reptiles collected by Heinrich Bergius and Ludwig Krebs
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: AaronM. Bauer --- Villanova University, USAKarl Heinrich Bergius (1790–1818) and Georg Ludwig Engelhard Krebs (1792–1844) were German apothecaries living in South Africa who collected zoological material, including reptiles, for Martin Hinrich Carl Lichtenstein, director of the Zoological Museum of the Wilhelm-Friedrichs-Universität zu Berlin (ZMB). Although... -
On the identity of lacerta punctata Linnaeus 1758, the type species of the genus Euprepis Wagler 1830, and the generic assignment of Afro‐Malagasy skinks
Item type: Journal Article • Journal: The Journal of the Herpetological Association of Africa • Authors: AaronM. Bauer --- Villanova University, United States of AmericaA recent phylogenetic revision placed Afro‐Malagasy Mabuya Fitzinger, 1826 into the genus Euprepis Wagler, 1830, with the type species Lacerta punctata Linnaeus, 1758 (syn. Mabuya homalocephala fide Andersson [1900]). Identification of L. punctatus with Euprepis destabilizes existing name usage for... -
First chromosomal analysis for the genus Lygodactylus (Gray, 1864): The karyotype of L. picturatus (Squamata, Gekkonidae, Gekkoninae)
Item type: Journal Article • Journal: The Journal of the Herpetological Association of Africa • Authors: Riccardo Castiglia --- Università di Roma “La Sapienza”, ItalyThe karyotype of Lygodactylus picturatus is here described, providing the first description of the karyotype in the genus. One male from Tanzania shows 2n = 40 (30 telocentrics, 6 subtelocentrics, 4 small metacentrics,) while one female from Kenya presents 2n... -
Systematics of West African skinks in the Chalcides thierryi group: Composition, distribution, and redescription of types
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Eli Greenbaum --- The University of Kansas, USAThe taxonomic status of the West African skink taxa Chalcides pulchellus and C. thierryi have fluctuated in the literature since their original descriptions a century ago. Until recently, C. pulchellus was known only from the holotype, but recent collecting has... -
A new species of Hemidactylus (Squamata: Gekkonidae) from Príncipe Island, Gulf of Guinea, West Africa with comments on the African-Atlantic clade of Hemidactylus geckos
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: ElizabethC. Miller --- University of California, USA AnnaB. Sellas --- California Academy of Sciences, USA RobertC. Drewes --- California Academy of Sciences, USAThe remote oceanic Gulf of Guinea islands of São Tomé and Príncipe are home to a highly endemic herpetofauna, which has become the focus of modern, on-going scientific analysis only during the past decade. Until now, the endemic Hemidactylus greeffi... -
The Madagascan spiny-tailed iguana alters the sequence of anti-predator responses depending on predator types
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Ryo Ito --- Kyoto University, Japan Akira Mori --- Kyoto University, Kitashirakawa-Oiwakecho, JapanSome prey are able to avoid specific predators by altering defensive behaviours depending on predator type. In the Ampijoroa forest of Ankarafantsika National Park in Madagascar, Madagascan spiny-tailed iguanas (Oplurus cuvieri cuvieri) inhabit a species rich vertebrate community and are... -
Comparison of formulae for calculating the corrected QT (QTc) interval in an adult population attending a diabetes clinic at a rural hospital in South Africa.
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: BN Mkhwanazi --- University of KwaZulu-Natal, South Africa L Govender --- University of KwaZulu-Natal, South Africa S Pillay --- University of KwaZulu-Natal, South Africa -
Magellan mussels Aulacomya atra from the South African coast show high diversity within populations but a lack of geographic differentiation
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JP Grobler --- University of the Free State, South Africa Z Zhao --- University of the Free State, South Africa JW Jones --- , United States A Kotze --- University of the Free State, South AfricaThe Magellan mussel Aulacomya atra is a bivalve mollusc found along parts of the South African and Namibian coastline. Its numbers were low historically compared with other indigenous species but have decreased further since the 1970s owing to habitat invasion... -
Some properties of the Walsh-Nörlund means
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Ushangi Goginava --- United Arab Emirates University, UAE Károly Nagy --- Institute of Mathematics and Computer Sciences, University of Nyíregyháza, Nyíregyháza, HungaryIn the present paper we give a necessary and sufficient condition on monotone weights, which guaranties the Nörlund means of Walsh-Fourier series converge in L 1 norm and CW norm. We also discuss the almost everywhere summability by Nörlund means... -
A note on p-adic Raabe formulas
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Min-Soo Kim --- Kyungnam University, Republic of KoreaThe Hurwitz-type Euler (or the alternating Hurwitz) zeta function is defined by the following series -
Componentwise localization of solutions to systems of operator inclusions via Harnack type inequalities
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Radu Precup --- Institute of Advanced Studies in Science and Technology, Babeş -Bolyai University & Tiberiu Popoviciu Institute of Numerical Analysis, Romania Jorge Rodríguez-López --- CITMAga, Universidade de Santiago de Compostela, SpainWe establish compression-expansion type fixed point theorems for systems of operator inclusions with decomposable multivalued maps. The approach is vectorial allowing to localize individually the components of solutions and to obtain multiple solutions with multiplicity not necessarily concerned with all... -
Initiating or switching to IDegAsp in a real-world South African population with type 2 diabetes – a cohort analysis from the ARISE study
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Adri Kok --- Netcare Union Alberton Hospital, South Africa Hemant Makan --- Centre for Diabetes, South Africa Gracjan Piotr Podgorski --- Netcare Greenacres Hospital, South Africa Shaifali Joshi --- Diabetes Care Centre, South Africa Verushka Chetty --- Novo Nordisk, South Africa Lungisa Nojoko --- PPMR-Clinical Trial Centre, ProHealth & Wellness Centre for Integrative Medicine, South Africa Hajira Bacus --- Lenmed Health Shifa Hospital, South Africa Naeem Moosa --- General Practice, South Africa Duma Khutsoane --- Bloemfontein Mediclinic, South Africa -
Effect of an educational intervention based on the Theory of Planned Behaviour in type 2 diabetic patients at a foot and eye care practice
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: B Pezeshki --- School of Medicine, Fasa University of Medical Sciences, Iran S Orangi --- School of Health, Fasa University of Medical Sciences, Iran SM Kashfi --- School of Health, Shiraz University of Medical Sciences, Iran P Afzali Harsini --- School of Health, Kermanshah University of Medical Sciences, Iran F Mohammadkhah --- Ramsar School of Nursing, Babol University of Medical Sciences, Iran A Khani Jeihooni --- School of Health, Shiraz University of Medical Sciences, Iran -
On finite Sylow tower and σ-tower groups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jinzhuan Cai --- Hainan University, P.R. China Inna N. Safonova --- Belarusian State University, Belarus Alexander N. Skiba --- Francisk Skorina Gomel State University, Belarus Zhigang Wang --- Hainan University,In this paper, G is a finite group and σ a partition of the set of all primes ℙ, that is, σ = {σ i | i ∈ I}, where ℙ = ⋃ i∈I σ i and σ i ∩... -
Diet quality of adults with poorly controlled type 2 diabetes mellitus at a tertiary hospital outpatient clinic in Tshwane District, South Africa
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Hanel Duvenage --- University of Pretoria, South Africa Gerda J Gericke --- University of Pretoria, South Africa Jane W Muchiri --- University of Pretoria, South AfricaObjective: To describe the dietary intake and its quality of patients with poorly controlled type 2 diabetes mellitus (T2DM) by assessing the dietary variety (DVS), dietary diversity (DDS), nutrient adequacy ratio (NAR) and mean nutrient adequacy ratio (MAR). -
Cross-disciplinary meaning and language for innovation in a business context: A conceptual paper
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Craig Andrew Duff --- Tshwane University of Technology, South Africa Jan Hendrik Dubery --- Tshwane University of Technology, South AfricaIn this conceptual work, we describe cross-disciplinary meaning and language related to the innovation phenomenon located in a business context. Our work attempts to find common meaning and language for innovation that can be applied across all business innovation projects... -
Herbicide trials on Campuloclinium macrocephalum (Asteraceae) during adverse conditions reveal incompatibility with biocontrol and a narrow window of opportunity for chemical control
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: JM Goodall --- University of the Witwatersrand, South Africa ETF Witkowski --- University of the Witwatersrand, South AfricaHerbicide trials on pompom weed Campuloclinium macrocephalum (Less.) DC. (Asteraceae) were carried out in grasslands with xeric and hydric soils, at sites in Gauteng, South Africa, from 2005 to 2008. The rust fungus Puccinia eupatorii Dietel, an established self-perpetuating biocontrol... -
Estimation of genetic parameters for growth in a population of Eucalyptus grandis × Eucalyptus nitens hybrids in KwaZulu-Natal and Mpumalanga
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: W Brink --- Sappi Shaw Research Centre, South Africa G van den Berg --- Sappi Shaw Research Centre, South Africa A Nel --- Sappi Shaw Research Centre, South Africa B du Toit --- University of Stellenbosch, South AfricaHybridising Eucalyptus grandis with Eucalyptus nitens produces progeny intended to combine the favourable traits of both parents. E. grandis exhibits good growth, stem form, wood properties and rooting ability for vegetative propagation. E. nitens displays superior cold tolerance, including superior... -
Beyond gender bias: Factors affecting female employee retention and advancement in the Dutch hotel sector
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Marrit Lijster --- NHL Stenden University of Applied Sciences, The Netherlands Georges El Hajal --- NHL Stenden University of Applied Sciences, The NetherlandsIn The Netherlands, gender roles have evolved remarkably, marked by feminist activism and legislative strides. Nevertheless, persistent gender biases and disparities continue to impact many industries, including the Dutch hotel sector. This quantitative research explores the factors affecting female employee... -
Participatory establishment of Cenchrus ciliaris forage grass among pastoralists in a semi-arid rangeland area of eastern Tanzania
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Onesmo Damian Ngenzi --- Sokoine University of Agriculture, Tanzania Peter Rogers Ruvuga --- , Tanzania George Mutani Msalya --- Sokoine University of Agriculture, Tanzania David Dawson Maleko --- Sokoine University of Agriculture, TanzaniaIn the semi-arid areas of Africa many pastorallsts move their livestock to find better grazing when forage is scarce during the dry season. However, the practice of forage cultivation can sustain fodder supply for effective livestock feeding during these times... -
Exponential stability of a laminated beam system with thermoelasticity of type III and distributed delay
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Kassimu Mpungu --- Mountains of the Moon University, UgandaIn this work, we consider a one-dimensional laminated Timoshenko beam system with thermoelasticity of type III and distributed delay. Our concern is to investigate the exponential stability of the vibrations in the system without structural damping. By exploiting the perturbed... -
Therapeutic inertia: a retrospective examination of inpatient management for type 2 diabetes mellitus at a South African regional hospital during a singular hospitalisation
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: KA White --- Harry Gwala Regional Hospital, South Africa S Pillay --- King Edward VIII Hospital, South Africa -
Trends in the burden of type 2 diabetes and its risk factors in Saudi Arabia
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Jinchao Hua --- School of Health Economics and Management, Nanjing University of Chinese Medicine, China Binfang Huang --- School of Health Economics and Management, Nanjing University of Chinese Medicine, China ShanShan Liu --- School of Health Economics and Management, Nanjing University of Chinese Medicine, China Zhonghe Sun --- Nanjing First Hospital, Nanjing Medical University, China -
Suboptimal control and failure to intensify therapy for South Africans with type 2 diabetes: an audit of diabetes management at primary health care facilities
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Patrick Ngassa Piotie --- University of Pretoria, South Africa Elizabeth M Webb --- University of Pretoria, South Africa Paul Rheeder --- University of Pretoria, South Africa -
Passion types and life satisfaction among older adult Moroccans: Reliability of scores and mediation by resilience
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Marei Ahmed --- Ajman University, United Arab Emirates Rasha M Abdelrahman --- Ajman University, United Arab Emirates Abderrahim Benlahcene --- Ajman University, United Arab EmiratesWe aimed to examine the factor structure of passion, resilience, and life satisfaction scales, as well as the mediating role of resilience in the relationship between different types of passion and life satisfaction among older Moroccan distance runners To assess... -
General decay and blow up of solutions for a plate viscoelastic p(x)-Kirchhoff type equation with variable exponent nonlinearities and boundary feedback
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jorge Ferreira --- Federal Fluminense University, Brazil Erhan Pişkin --- Dicle University, Turkey Mohammad Shahrouzi --- Jahrom University, IranIn this paper, we consider a plate viscoelastic p(x)–Kirchhoff type equation with variable-exponent nonlinearities of the form -
Extension properties for monotone sublinear operators
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Sorin G. Gal --- University of Oradea, RomaniaIn this paper we obtain extension properties for monotone sublinear operators. The results obtained generalize those known for positive linear operators. Several examples illustrating the results obtained are given. -
Adults living with type 2 diabetes experiences of a randomised adapted diabetes nutrition education programme: a qualitative process evaluation
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Jane W Muchiri --- University of Pretoria, South Africa Gerda J Gericke --- University of Pretoria, South Africa Paul Rheeder --- University of Pretoria, South Africa -
A plant-based dietary approach to the management of type 2 diabetes mellitus in South Africa: short communication of a multiple-case study
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Nanine Wyma --- Physicians Association for Nutrition South Africa, South Africa Christi Niesing --- North-West University, South Africa Andrew KL Robinson --- Physicians Association for Nutrition South Africa, South Africa Petra Bester --- North-West University, South Africa -
A taxonomic revision of Arnot’s Chat Myrmecocichla arnotti (family Muscicapidae)
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Robert J Dowsett --- , France Sylke Frahnert --- Leibniz Institute for Evolution and Biodiversity Science, Germany Françoise Dowsett-Lemaire --- , FranceArnot’s Chat Myrmecocichla arnotti in the family Muscicapidae is largely confined to the woodlands of the Zambezian biome of south-central Africa. This work assesses its taxonomic status, including comments on the so-called Ruaha Chat M. [a.] collaris (also named M... -
Tricomi problem for mixed parabolic-hyperbolic equation with dynamic-type boundary condition
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Bauyrzhan Derbissaly --- Institute of Mathematics and Mathematical Modeling, KazakhstanIn this paper, we study an analogue of Tricomi problem for a parabolichyperbolic equation of the first type. To solve the problem for the heat equation, we use properties of the spectral problem with a spectral parameter in the boundary... -
Ambrosetti-Prodi type results for elliptic equations with nonlinear gradient terms on an exterior domain
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jiao Zhao --- Northwest Normal University, People’s Republic of China Ruyun Ma --- Northwest Normal University, People’s Republic of ChinaThe aim of this paper is to establish an Ambrosetti-Prodi type result for the problem -
Third-order Hankel determinants for q-analogue analytic functions defined by a modified q-Bernardi integral operator
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Sarem H. Hadi --- College of education for pure sciences, University of Basrah, Iraq Maslina Darus --- Universiti Kebangsaan Malaysia, Malaysia Rabha W. Ibrahim --- Near East University, Mathematics Research Center, TurkeyIn this paper we define a Bernardi type quantum integral operator. It transforms the starlike univalent in the unit disk into a starlike region in it. We show that the upper-bound of the third-order Hankel determinant for classes of q-starlike... -
The impact of sheep grazing on shrub communities at the Afrikaner and Hereford grazing trials at Grootfontein in the Eastern Upper Karoo
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: L Hebbelmann --- , South Africa TG O’Connor --- , South Africa JCO du Toit --- Grootfontein Agricultural Development Institute, South AfricaIn the Nama-Karoo, grazing by livestock is an important driver of Karoo shrub composition. Many different breeds of livestock are farmed in the Nama-Karoo, and the stocking rate varies greatly over the region. In this study we examine how grazing... -
Phylogeographic structuring in a widespread southern African grass snake (Psammophiinae: Psammophylax rhombeatus)
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: C. Keates --- Rhodes University, South Africa W. Conradie --- Port Elizabeth Museum (Bayworld), South Africa S. Edwards --- Rhodes University, South AfricaThe structural and environmental heterogeneity within southern Africa has given rise to many morphological forms of Psammophylax rhombeatus distributed throughout the country, with previous studies neglecting the associated molecular significance of these forms. The species’ widespread, generalist ecology coupled with... -
Clinical insights from continuous glucose monitor use in patients living with type 1 diabetes in rural Malawi
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: G Ferrari --- Brigham and Women’s Hospital, USA M Boti --- , Malawi D Nakotwa --- , Malawi A Gomber --- Brigham and Women’s Hospital, USA MM Coates --- Brigham and Women’s Hospital, USA K Kumwenda --- , Malawi F Valeta --- , Malawi L Drown --- Brigham and Women’s Hospital, USA A Thapa --- Brigham and Women’s Hospital, USA V Mithi --- , Malawi A Msekandiana --- Baylor, College of Medicine Children’s Foundation, Malawi C Kachimanga --- , Malawi PH Park --- Brigham and Women’s Hospital, USA AJ Adler --- Brigham and Women’s Hospital, USA G Bukhman --- Brigham and Women’s Hospital, USA T Ruderman --- , Malawi C Trujillo --- Brigham and Women’s Hospital, USA -
Prevalence and treatment-related outcome of hospitalised type 2 diabetes mellitus patients with comorbidities at an academic hospital in Johannesburg
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: T Makhabane --- University of the Witwatersrand, South Africa G Gabriels --- University of the Witwatersrand, South Africa S Chetty --- University of the Witwatersrand, South Africa -
Knowledge, attitude, and practices related to diabetes among patients with type 2 diabetes mellitus at Tshepong Hospital
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: U Maduemezia --- University of the Witwatersrand, South Africa E Variava --- University of the Witwatersrand, South Africa T Moloantoa --- University of the Witwatersrand, South Africa P Abraham --- University of the Witwatersrand, South Africa B Rambau --- University of the Witwatersrand, South Africa TS Ndaba --- University of the Witwatersrand, South Africa S Bhana --- Chris Hani Baragwanath Academic Hospital, South Africa R Daya --- University of the Witwatersrand, South Africa -
Occurrence and pathogenicity of Puccinia graminis f. sp. tritici on wheat in South Africa during 2007 and 2008
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: T. Terefe --- ARC-Small Grain Institute, Private Bag X29, Bethlehem 9700, South Africa Z.A. Pretorius --- Department of Plant Sciences, University of the Free State, Bloemfontein, South Africa I. Paul --- ARC-Small Grain Institute, South Africa J. Mebalo --- ARC-Small Grain Institute, Private Bag X29, Bethlehem 9700, South Africa L. Meyer --- ARC-Small Grain Institute, Private Bag X29, Bethlehem 9700, South Africa K. Naicker --- ARC-Small Grain Institute, Private Bag X29, Bethlehem 9700, South AfricaSurveys were conducted in 2007 and 2008 to determine the distribution and frequency of pathotypes of Puccinia graminis Pers.:Pers f. sp. tritici Eriks. E. Henn. in South Africa. Stem and/or leaf samples of wheat and triticale (X Triticosecale) infected with... -
Nontrivial solutions for multiparameter k-Hessian systems
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Huanhuan Ding --- Northwest Normal University, People’s Republic of China Chenghua Gao --- Northwest Normal University, People’s Republic of China Xingyue He --- Northwest Normal University, People’s Republic of ChinaThis paper is devoted to studying the coupled system of multiparameter k-Hessian equations -
Efficacy of immunosuppression in preserving beta cell function and reducing insulin requirements in Type 1 diabetes mellitus: a comprehensive review
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: S Pillay --- University of KwaZulu-Natal, South Africa A Pillay --- DRAM Consulting, South Africa A Kalhan --- Royal Glamorgan Hospital, UK -
Size structure and reproductive biology of skipjack tuna Katsuwonus pelamis and kawakawa Euthynnus affinis in the western Indian Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: FA Mzingirwa --- Rhodes University, South Africa GM Okemwa --- Kenya Marine and Fisheries Research Institute (KMFRI), Kenya MW Farthing --- Rhodes University, South Africa CS Bova --- Rhodes University, South Africa JS Halafo --- Instituto Oceanográfico de Moçambique (InOM), Mozambique JG Mshana --- Sokoine University of Agriculture, Tanzania AA Abubakar --- Kenya Marine and Fisheries Research Institute (KMFRI), Kenya N Ishmael --- Kenya Marine and Fisheries Research Institute (KMFRI), Kenya WHH Sauer --- Rhodes University, South AfricaSkipjack tuna Katsuwonus pelamis and kawakawa Euthynnus affinis are economically important tuna species targeted by artisanal fishers in the western Indian Ocean. Both species are currently considered sustainably fished despite substantial catches. Even so, ongoing management is crucial to maintain... -
Cross-realm biodiversity profile of the South African coastal zone
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: LR Harris --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa JB Adams --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa A Dayaram --- Kirstenbosch Research Centre, South African National Biodiversity Institute (SANBI), South Africa LV Dunga --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa N Job --- Kirstenbosch Research Centre, South African National Biodiversity Institute (SANBI), South Africa SP Kirkman --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa SJ Lamberth --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa MC Pfaff --- University of Cape Town, South Africa JL Raw --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa GM Rishworth --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa A Robbins --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa KJ Sink --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa AL Skowno --- Kirstenbosch Research Centre, South African National Biodiversity Institute (SANBI), South Africa H van Deventer --- Council for Scientific and Industrial Research (CSIR), South Africa L van Niekerk --- Institute for Coastal and Marine Research, Nelson Mandela University, South AfricaSouth Africa’s coast is 3 113 km long and includes microtidal shores that experience semi-diurnal tides and mostly high wave energy. From west to east, the cool Benguela Current and the warm Agulhas Current drive steep gradients in climate and... -
Assessment of the inland wetland ecosystem types in South Africa: threats and protection
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: H van Deventer --- Council for Scientific and Industrial Research (CSIR), South Africa Jeanne L Nel --- , The NetherlandsEcosystem threat status (ETS) and ecosystem protection levels (EPLs) are headline indicators that can assess freshwater ecosystems at a country-wide scale. A spatial layer of freshwater, inland wetland ecosystem types of South Africa was combined with a range of spatial... -
Proofs of three conjectured internal congruences modulo 32 for Schur-type overpartitions
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Weifeng Gao --- School of Mathematical Sciences, Suzhou University of Science and Technology, P.R. China Olivia X.M. Yao --- School of Mathematical Sciences, Suzhou University of Science and Technology, P.R. ChinaLet S(n) denote the number of overpartitions of Schur-type. Recently, Chern, da Silva and Sellers proved many congruences modulo 8 and 16 for S(n). At the end of their paper, they also posed a conjecture on internal congruences modulo 32... -
Provenance variation, genetic parameters, and potential gains in Eucalyptus viminalis subsp. nobilis tested in two high altitude cool temperate sites in the summer rainfall region of South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Christopher Komakech --- , South Africa Annabel Fossey --- , South AfricaOver the past 50 years, commercial forestry in South Africa has expanded into mid and high altitude summer rainfall regions, predominantly planting Eucalyptus nitens and Eucalyptus macarthurii. However, the suitability of these sites is increasingly threatened by projected climate changes... -
Type 2 diabetes mellitus but not overweight/obesity reduces testicular volume and endocrine function in men
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: E Musa --- Kaduna State University, Nigeria GC Musa --- University of Cape Town, South Africa E Salazar-Petres --- Universidad San Sebastián, Carrera de Obstetricia, Chile F Bello --- Ahmadu Bello University, Nigeria AG Bakari --- Ahmadu Bello University, Nigeria -
Abstract degenerate difference equations
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Marko Kostić --- University of Novi Sad, SerbiaIn this paper, we consider some classes of the abstract degenerate difference equations with integer-order derivatives. We also investigate the existence and uniqueness of almost periodic type solutions to the abstract degenerate difference equations. -
Comparing the activity of exploited and unexploited populations of a reef-dwelling seabream, Chrysoblephus laticeps, during an extreme upwelling and cold-spell event
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: NT Mlotshwa --- Rhodes University, South Africa MR Skeeles --- Rhodes University, South Africa MI Duncan --- Rhodes University, South Africa C Muller --- Rhodes University, South Africa WM Potts --- Rhodes University, South Africa AC Winkler --- Rhodes University, South Africa A-R Childs --- Rhodes University, South AfricaAlong the south coast of South Africa, extreme upwelling events lead to rapid temperature declines and prolonged marine cold-spells, which have, on occasion, led to large-scale mortalities of coastal fishes. In a somewhat antagonistic process, fishing exploitation has been shown... -
Individual variability in the thermal limits of juvenile dusky kob Argyrosomus japonicus from a permanently open estuary
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J Frachet --- Rhodes University Department of Ichthyology and Fisheries Sciences, South Africa A-R Childs --- Rhodes University Department of Ichthyology and Fisheries Sciences, South Africa AC Winkler --- Rhodes University Department of Ichthyology and Fisheries Sciences, South Africa MW Farthing --- Rhodes University Department of Ichthyology and Fisheries Sciences, South Africa CD Hempel --- Rhodes University Department of Ichthyology and Fisheries Sciences, South Africa WM Potts --- Rhodes University Department of Ichthyology and Fisheries Sciences, South AfricaGlobally, fish are facing the pressure of increasing thermal variability, which challenges the physiological capacity and resilience of species at the level of the individual, population and community. As transition zones, estuarine ecosystems are becoming increasingly thermally dynamic, which affects... -
The role of concave functions in the study of interpolative contractions
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Marija Cvetković --- University of Niš, SerbiaThe interpolative contraction and its numerous generalizations motivated this study on its relation to previously known classes of contractive mappings. We will prove that by using of the concave property of the logarithmic function (or Jensen’s inequality), it is possible... -
High population differentiation of Okpe River Talbotiella gentii at Anum Boso, Ghana, uncovered by RAPD
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Daniel Dompreh --- Kwame Nkrumah University of Science and Technology, Ghana Adam Price --- University of Aberdeen, UK Michael David Swaine --- University of Aberdeen, UKTalbotiella gentii Hutch. & Greenway is an endemic, severely threatened and fragmented species in Ghana. Though it is a highly valued non-timber product, it faces the threat of extinction from wildfire, and exploitation for charcoal and fuelwood, agriculture and building... -
Mycorrhizal fungi in Acacia mearnsii plantations and native fragments of the Pampas biome, southern Brazil
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Etienne Winagraski --- Universidade Federal do Paraná, Brazil Celso Garcia Auer --- Universidade Federal do Paraná, Brazil Pedro Henrique Riboldi Monteiro --- Universidade Federal do Paraná, Brazil Antônio Rioyei Higa --- Universidade Federal do Paraná, Brazil Glaciela Kaschuk --- Universidade Federal do Paraná, BrazilBlack wattle (Acacia mearnsii) was introduced to southern Brazil in the 1930s without any documented history of microbial inoculation. This study tested the hypothesis that black wattle introduction does not harm indigenous arbuscular mycorrhizal fungi (AMF) communities or reduce soil... -
Polar Kangaroos of Type E6
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Yannick Neyt --- Ghent University, Belgium Hendrik Van Maldeghem --- Ghent University, BelgiumA collineation of a point-line geometry is called a kangaroo if its displacement spectrum has a gap; that is, at least one certain distance smaller than the diameter of the geometry cannot occur between a point and its image. In... -
Nehari manifold approach for a singular multi-phase variable exponent problem
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mustafa Avci --- Athabasca University, CanadaThis paper is concerned with a singular multi-phase problem with variable singularities. The main tool used is the Nehari manifold approach. Existence of at least two positive solutions with positive-negative energy levels are obtained. For the illustration of the main... -
Functional diversification and performance of wheat–canola rotations in the Western Cape
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A Louw --- Stellenbosch University, South Africa PA Swanepoel --- Stellenbosch University, South Africa S van der Westhuizen --- Stellenbosch University, South Africa J Strauss --- Stellenbosch University, South AfricaCrop rotation serves as a fundamental pillar within conservation agriculture (CA) farming systems, enabling the integration of more diverse crops and livestock. With increasing weather variability, new methods are needed to assess the long-term effects of diversification on the agronomic... -
Effects of nonlocal source terms on Kirchhoff-type double phase equations with variable exponents: Existence of three distinct solutions
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Khaled Kefi --- Center for Scientific Research and Entrepreneurship, Northern Border University, Saudi Arabia Haikel Ouerghi --- Department of Quantitative Methods, Jendouba University, Research Laboratory of Mathematics and Applications, Tunisia Khaled Benali --- Department of Mathematics, Faculty of Sciences of Gabes, Research Laboratory of Mathematics and Applications, Tunisia Nguyen Thanh Chung --- Faculty of Mathematics and Information Technology, The University of Danang - University of Science and Education, VietnamThis paper investigates a class of Kirchhoff-type double phase problems distinguished by the inclusion of two nonlocal source terms and formulated in the framework of variable exponent Sobolev spaces. By applying a variant of Bonanno’s critical point theorem [12], we...
