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Reciprocal differences in intraspecies crosses of tobacco (Nicotiana tabacum L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.G. van Heerden --- , Republic of South Africa M.P. Lamprecht --- , Republic of South Africa H. van Ark --- , Republic of South AfricaReciprocal differences in a diallel cross experiment with air-cured tobacco strains were found to be significant for certain characteristics, but relatively small compared to differences between strains in general combining ability. A factorial analysis designed to detect maternal effects in... -
Nearshore surface current patterns in the Tsitsikamma National Park, South Africa
Item type: Journal Article • Journal: South African Journal of Marine Science • Authors: C. G. Attwood J. Allen P. J. ClaassenThe pattern of surface currents in the Tsitsikamma National Park, South Africa, was studied with holey-sock drogues released in batches of up to four at a time, from 1996 and 1998. Drogues were left to drift for either 6 or... -
Genetic and morphological variation of the lanternfish Lampanyctodes hectoris (Myctophiformes: Myctophidae) off southern Africa
Item type: Journal Article • Journal: South African Journal of Marine Science • Authors: W. K. Florence P. A. Hulley B. A. Stewart M. J. GibbonsGenetic and morphological variation within the southern African population of Lampanyctodes hectoris was analysed. A total of 15 enzymes, encoding 22 isozyme loci, was examined (n = 327); seven were polymorphic. The percentage of polymorphic loci ranged from 13.6 to... -
Long-distance migration of the rock lobster Palinurus delagoae off South Africa and Moçambique
Item type: Journal Article • Journal: South African Journal of Marine Science • Authors: J. C. GroeneveldLong-distance migration patterns of deep-water rock lobster Palinurus delagoae were investigated using tagrecapture data obtained over a period of 6 years (1995–2000). Of 7 654 animals tagged, 363 (4.7%) were recovered from South African and seven (0.1%) from Moçambican waters... -
THE INVERTEBRATE FAUNA AND BIOTIC INDEX VALUE OF WATER QUALITY OF THE GREAT BERG RIVER, WESTERN CAPE
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: A. Coetzer --- , South AfricaThe invertebrate fauna was sampled at seven localities in the main stream of the Berg River in 1974. These results are discussed and compared with those of Harrison and Elsworth (1958). The results obtained were also used in applying the... -
CIRCULATION IN HIGHLY STRATIFIED SOUTHERN AFRICAN ESTUARIES
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: J.L. Largier --- , USA J.H. Slinger --- Council for Scientific and Industrial Research, South AfricaThe nature of estuarine circulation under highly stratified conditions is reviewed in the context of southern African estuaries that are small and have a constricted connection to the ocean. While the focus is on the generic hydrodynamic processes and features,... -
The grazing index method of range condition assessment
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: P.C.V. du Toit --- Department of Agriculture, Republic of South AfricaOwing to the difficulty of examining succession theory in the Karoo, it is suggested the ecological index method (EIM), be replaced by the grazing index method (GIM), through the introduction of grazing index values (GIV) for Karoo plant species. The... -
Description of a method for assessing veld condition in the Karoo
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: P.C.V. du Toit --- , Republic of South AfricaIn the past, veld condition in the Karoo was assessed according to the ecological index method. This has recently been replaced by the grazing‐index method. The principles governing the method of botanical survey remain the same, but this methodology has... -
On the Projective Curvature Tensor of Generalized Sasakian-Space-Forms
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: U.C. De --- Department of Pure Mathematics, India Avijit Sarkar --- Department of Mathematics, IndiaThe object of the present paper is to study the nature of generalized Sasakian-space-forms under some conditions regarding projective curvature tensor. All the results obtained in this paper are in the form of necessary and sufficient conditions. -
Developing a protocol for managing the biophysical condition of a water management area: the Sabie catchment case study
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: E van Wyk J Jaganyi B van Wilgen C Breen K Rogers D Roux F VenterRecent modification of the South African Water Law spells out fundamental changes for the way the country's water resources will be managed in the future. One of the most significant mandates is the establishment of Catchment Management Agencies (CMAs) and... -
Oualidia lagoon, Morocco: an estuary without a river
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: K Hilmi VG Koutitonsky A Orbi JI Lakhdar M ChagdaliThis study describes some physical oceanography features of an estuary maintained by fresh groundwater inflow. The mesoscale variability of currents, temperature and salinity are documented from moored current meter observations of 12 days duration at three stations. Current speeds exceeded... -
Use of Plastic Drift Cards As Indicators of Possible Dispersal of Propagules of the Mangrove Avicennia Marina by Ocean Currents
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T. D. Steinke C. J. WardPlastic drift cards with the same buoyancy as propagules of Avicennia marina (Forssk.) Vierh. were used as an indicator of possible mangrove dispersal by ocean currents. The cards were dropped from an aircraft into the sea at the mouths of... -
Adult Movement and Larval Dispersal of Argyrozona Argyrozona (Pisces: Sparidae) from a Temperate Marine Protected Area
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S. L. Brouwer M. H. Griffiths M. J. RobertsAdult emigration and larval dispersal of carpenter Argyrozona argyrozona from the Tsitsikamma National Park (TNP), South Africa, were investigated using mark-recapture data and Acoustic Doppler Current Profiler measurements of currents. Tagging data showed that adult carpenter were mainly resident, with... -
Oceanic variability in the western sector of Algoa Bay, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: EH Schumann JRS Churchill HJ ZaaymanThe city of Port Elizabeth lies in the western sector of Algoa Bay, and a number of projects have investigated the oceanic temperature, salinity and current structures in the vicinity. This paper analyses past results, and then incorporates measurements of... -
Epipelagic siphonophores off the east coast of South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D Thibault-Botha MJ GibbonsThis work represents the first systematic analysis of the common Siphonophora from the Agulhas Current (South-West Indian Ocean). A total of 56 species of siphonophores was collected from a series of three largely epipelagic cruises between Algoa Bay and the... -
Currents along the Tsitsikamma coast, South Africa, and potential transport of squid paralarvae and ichthyoplankton
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MJ Roberts M van den BergIn July 1998, a bottom-mounted Acoustic Doppler Current Profiler was deployed at 36m depth in the centre of the Tsitsikamma National Park on the eastern Agulhas Bank, South Africa. The purpose was to investigate transport of chokka squid Loligo vulgaris... -
Growth patterns of the pearl oyster Pinctada margaritifera L. in Gazi Bay, Kenya
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: KM Mavuti EN Kimani T MukiamaCulture of pearl oysters is rapidly increasing worldwide, including the western Indian Ocean. The oyster Pinctada margaritifera L., which produces the most highly valued black pearls, occurs in East Africa, a nd as been exploited there for the shell for... -
A demonstration of the hydrographic partition of the Benguela upwelling ecosystem at 26°40'S
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CM Duncombe RaeContinuous CTD data from a series of recent cruises show that the distribution of the water mass characteristics in the central Benguela region from the Orange River mouth (28°38'S) to alvis Bay (22°57'S) is discontinuous in the central and intermediate... -
Influence of oceanographic fronts and low oxygen on the distribution of ichthyoplankton in the Benguela and southern Angola currents
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: W Ekau HM VerheyeThe study focuses on ichthyoplankton populations in the southern Angola Current, the Angola-Benguela Front and the coastal upwelling area of the northern and central Benguela Current. The horizontal and vertical distributions of eggs and larvae of sardine Sardinops sagax, anchovy... -
Coastal currents and temperatures along the eastern region of Algoa Bay, South Africa, with implications for transport and shelf–bay water exchange
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MJ Roberts --- Department of Environmental Affairs, South AfricaBoat ADCP surveys and an eight-month deployment of a 1 200 kHz ADCP were used to study the nearshore (5–25 m depth) current and temperature patterns along the eastern coastal region of Algoa Bay, on the south-east coast of South... -
Coastal oceanic climate change and variability from 1982 to 2009 around South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Rouault --- Department of Oceanography, Marine Research Institute, South Africa B Pohl --- Centre de Recherches de Climatologie, France P Penven --- , FranceChanges and fluctuations in sea surface temperature (SST) around the South African coast are analysed at a monthly scale from 1982 to 2009. There is a statistically significant negative trend of up to 0.5 °C per decade in the southern... -
Shelf currents, lee-trapped and transient eddies on the inshore boundary of the Agulhas Current, South Africa: their relevance to the KwaZulu-Natal sardine run
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MJ Roberts --- Oceans and Coasts, Department of Environmental Affairs, South Africa CD van der Lingen --- Branch Fisheries, Department of Agriculture, South Africa C Whittle --- Department of Oceanography, South Africa M van den Berg --- Oceans and Coasts, Department of Environmental Affairs, South AfricaThe existence and strength of the annual KwaZulu-Natal (KZN) sardine run has long been a conundrum to fishers and scientists alike ― particularly that the sardine Sardinops sagax migrate along the narrow Transkei shelf against the powerful, warm Agulhas Current... -
Circulation patterns in the Delagoa Bight, Mozambique, and the influence of deep ocean eddies
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T Lamont --- Oceans and Coasts Research, Department of Environmental Affairs, South Africa MJ Roberts --- Oceans and Coasts Research, Department of Environmental Affairs, South Africa RG Barlow --- , South Africa T Morris --- , South Africa MA van den Berg --- Oceans and Coasts Research, Department of Environmental Affairs, South AfricaAn investigation of the circulation patterns and thermohaline structures in the Delagoa Bight, Mozambique, was undertaken during May 2004, August 2004, April 2005, and April 2006, using hydrographic surveys, surface drifters and satellite imagery. Hydrographic and satellite data during May... -
Accumulation of diarrhetic shellfish poisoning toxins in the oyster Crassostrea gigas and the mussel Choromytilus meridionalis in the southern Benguela ecosystem
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: GC Pitcher --- Branch: Fisheries Management, Department of Agriculture, South Africa B Krock --- , Germany AD Cembella --- , GermanyDiarrhetic shellfish poisoning (DSP) poses a significant threat to the safe consumption of shellfish in the southern Benguela ecosystem. The accumulation of DSP toxins was investigated in two cultivated bivalve species, the Pacific oyster Crassostrea gigas and the mussel Choromytilus... -
Movement patterns of coastal bottlenose dolphins in the presence of a fast-flowing, prevailing current: shore-based observations at Cape Vidal, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T Photopoulou --- Sea Mammal Research Unit, UK PB Best --- , South Africa PS Hammond --- Sea Mammal Research Unit, UK KP Findlay --- Department of Oceanography, University of Cape Town, South AfricaThe presence and movement of Indo-Pacific bottlenose dolphins Tursiops aduncus were investigated using shore-based observations made during a humpback whale Megaptera novaeangliae migration survey at Cape Vidal, South Africa, undertaken between June and October 1988–1991. Occurrence was analysed as counts... -
Spawning strategies and transport of early stages of the two Cape hake species, Merluccius paradoxus and M. capensis, in the southern Benguela upwelling system
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: B Grote --- , Germany EK Stenevik --- , Norway W Ekau --- , Germany HM Verheye --- Oceans and Coasts Research, Department of Environmental Affairs, South Africa MR Lipiński --- Branch: Fisheries, Department of Agriculture, South Africa W Hagen --- Marine Zoology, GermanySeasonal and short-term variability of environmental parameters influence the spawning strategies of fish species. In this study, the spawning strategies and the transport of early stages of the two Cape hake species off South Africa were investigated. Distribution of eggs... -
St Helena Bay (southern Benguela) then and now: muted climate signals, large human impact
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L Hutchings --- Department of Environmental Affairs, South Africa A Jarre --- Marine Research (MA-RE) Institute, South Africa T Lamont --- Department of Environmental Affairs, South Africa M van den Berg --- Department of Environmental Affairs, South Africa SP Kirkman --- Department of Environmental Affairs, South AfricaThe development of suitable reference states for ecosystem-based management requires documentation of changes in structure and functioning of marine ecosystems, including assessment of the relative importance of bottom-up and top-down processes as drivers of change. We used monitoring data available... -
Upwelling and ocean structures off Algoa Bay and the south-east coast of South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: WS Goschen --- South African Environmental Observation Network (SAEON), South Africa EH Schumann --- Department of Geosciences, South Africa KS Bernard --- South African Environmental Observation Network (SAEON), South Africa SE Bailey --- South African Environmental Observation Network (SAEON), South Africa SHP Deyzel --- South African Environmental Observation Network (SAEON), South AfricaAs the Agulhas Current flows along the south-east coast of South Africa, a number of processes operate that bring cold, deep water up onto the narrow shelf. As a consequence, upwelling along the coastline is enhanced farther southward and downstream... -
Pygmy right whale Caperea marginata records from Namibia
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: RH Leeney --- Namibian Dolphin Project, Namibia K Post --- Natural History Museum, The Netherlands PB Best --- Mammal Research Institute, South Africa CJ Hazevoet --- Unidade de Zoologia, Rua da Junqueira, Portugal SH Elwen --- Namibian Dolphin Project, NamibiaAll known records of pygmy right whales Caperea marginata in Namibia since 1978 are summarised for the first time, including 12 strandings (live and recently dead animals) and skeletal remains from at least eight more individuals. The majority of strandings... -
Shallow-water, nearshore current dynamics in Algoa Bay, South Africa, with notes on the implications for larval fish dispersal
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: P Pattrick --- Department of Ichthyology and Fisheries Science, South Africa NA Strydom --- , South Africa WS Goschen --- , South AfricaNearshore currents play a vital role in the transport of eggs and larval stages of fish. However, little is known about their complexity and the implications for dispersal of fish larvae. The study describes the complexity of the shallow nearshore... -
Cross-shelf biogeochemical characteristics of sediments in the central Benguela and their relationship to overlying water column hypoxia
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AK van der Plas PMS Monteiro A PascallData from two cross-shelf sediment sampling cruises were used to explain reasons for the sediment biogeochemical variability in respect of carbon, nitrogen and sulphur, and how the cycling of these elements governs the biogeochemistry of the overlying water through their... -
Confirmed identification of gymnodimine in oysters from the west coast of South Africa by liquid chromatography–tandem mass spectrometry
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: B Krock GC Pitcher J Ntuli AD CembellaMussels Choromytilus meridionalis and oysters Crassostrea gigas were suspended from a mooring off Lambert's Bay, South Africa, to study the kinetics of lipophilic phycotoxin accumulation and detoxification. The shellfish were subsequently harvested daily over approximately three weeks and analysed for... -
Recurrent urinary tract infections in non-pregnant adult women
Item type: Journal Article • Journal: South African Family Practice • Authors: EW Henn --- Department of Obstetrics and Gynaecology, South AfricaRecurrent urinary tract infections occur in approximately 5% of adult women. It has a significant impact on the affected women's quality of life and on health care costs. It is important to be aware of the physiologically protective factors preventing... -
The “Ten Commandments” of treating preschool children who wheeze
Item type: Journal Article • Journal: South African Family Practice • Authors: RJ Green --- Department of Paediatrics and Child Health, A Halkas --- Children's Chest and Allergy Clinic, Krugersdorp Hospital, E Weinberg --- Allergy Unit,Wheezing in young children is problematic for most practitioners. Difficulties arise in both the diagnosis and management of this clinical phenotype. Not all preschool children who wheeze have asthma. Therefore, we suggest that the “Ten Commandments” of managing preschool wheezing... -
Love, lust and the emotional context of multiple and concurrent sexual partnerships among young Swazi adults
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Allison Ruark --- Department of International Health, USA Lunga Dlamini --- Department of International Health, USA Nonhlanhla Mazibuko --- Department of International Health, USA Edward C Green --- Department of Population, Family and Reproductive Health, USA Caitlin Kennedy --- Department of International Health, USA Amy Nunn --- Division of Infectious Diseases, USA Timothy Flanigan --- Division of Infectious Diseases, USA Pamela J Surkan --- Department of International Health, USAMen and women in Swaziland who are engaged in multiple or concurrent sexual partnerships, or who have sexual partners with concurrent partners, face a very high risk of HIV infection. Ninety-four in-depth interviews were conducted with 28 Swazi men and... -
Trophic investigations of Cape fur seals at the easternmost extreme of their distribution
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Connan --- Department of Zoology, South Africa GJG Hofmeyr --- Department of Zoology, South Africa MJ Smale --- Department of Zoology, South Africa PA Pistorius --- Department of Zoology, South AfricaThe diet of Cape fur seals Arctocephalus pusillus pusillus in the eastern portion of their distribution has received little attention previously, and was studied using traditional methods only. In 2013 we therefore assessed the diet of seals at the easternmost... -
Value added reporting in South Africa: current disclosure patterns
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: L J Stainbank --- Department of Accounting,The value added statement has become a recognised part of annual reports in South Africa despite the fact that no guidance has been provided to the preparers of the value added statement other than The corporate report (ICAEW, 1975) which... -
Philips’ application of current cost accounting until 1981
Item type: Journal Article • Journal: De Ratione • Authors: M A van Hoepen R.A. --- University of Stellenbosch, I J Lambrechts --- University of Stellenbosch, F J Mostert --- University of Stellenbosch,The N.V. Philips’ Gloeilampenfabrieken has been applying current cost accounting since 1951. In doing so, various systems were chosen over the years. The example of Philips can therefore be seen as an empirical illustration of a number of ways according... -
Philips’ application of current cost accounting since 1982
Item type: Journal Article • Journal: De Ratione • Authors: M A van Hoepen --- University of Stellenbosch, I J Lambrechts --- University of Stellenbosch, F J Mostert --- University of Stellenbosch,The N.V. Philips’ Gloeilampenfabrieken has applied current cost accounting since 1951, In doing so, various systems were chosen over the years. The example of Philips can therefore be seen as an empirical illustration of a number of ways according to... -
A comparison of genetic structure in two low-dispersal crabs from the Wild Coast, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: Y Qhaji --- Molecular Zoology Laboratory (Aquatic Division), Department of Zoology, South Africa B Jansen van Vuuren --- Molecular Zoology Laboratory (Aquatic Division), Department of Zoology, South Africa I Papadopoulos --- Molecular Zoology Laboratory (Aquatic Division), Department of Zoology, South Africa CD McQuaid --- Department of Zoology and Entomology, South Africa PR Teske --- Molecular Zoology Laboratory (Aquatic Division), Department of Zoology, South AfricaThe Wild Coast in south-eastern South Africa is strongly influenced by the warm, southward-flowing Agulhas Current. This current has a significant impact on dispersal in the coastal biota of the region, and facilitates high levels of connectivity among populations. However,... -
Factors associated with retreatment tuberculosis in Tshwane, south africa: the role of tobacco smoking
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: G M C Louwagie --- Public Health Medicine, School of Health Systems and Public Health, Faculty of Health Sciences, University of Pretoria, O A Ayo-Yusuf --- Dean/Director’s Office, School of Oral Health Sciences, Faculty of Health Sciences, University of Limpopo, Medunsa Campus Director, Southern Africa Resilient Africa Innovation Laboratory, Grant Recipient American Cancer Society,There is evidence from international studies that tobacco smoking increases the risk of tuberculosis recurrence through its effects on the immunological and barrier functions of the airways. In this cross-sectional study, the association between current tobacco smoking and retreatment tuberculosis... -
A preliminary molecular phylogeny of the Namib Desert darkling beetles (Tenebrionidae)
Item type: Journal Article • Journal: African Zoology • Authors: J. Steckel --- Department of Ecology, Germany M.L. Penrith --- Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, South Africa J. Henschel --- Gobabeb Training and Research Centre, Namibia R. Brandl --- Department of Ecology, Germany J. Meyer --- Department of Ecology, GermanyA systematic classification of Namib Desert darkling beetles (Coleoptera: Tenebrionidae) based on morphological characters is complicated as strong selection pressures exerted by desert conditions have led to a suite of convergent morphological characteristics. Here we present a first and preliminary... -
Diel effects on bottom-trawl survey catch rates of shallow- and deep-water Cape hakes Merluccius capensis and M. paradoxus off Namibia, using solar zenith angle
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: P Kainge --- National Marine Information and Research Centre (NatMIRC), Namibia K Wieland --- Section for Monitoring and Data, Institute of Aquatic Resources, Denmark J Feekings --- Section for Ecosystem based Marine Management, DenmarkDiel patterns in survey trawl catches for the Cape hakes Merluccius capensis and M. paradoxus off Namibia were studied in order to examine the effect of diel bias on catchability, and its implication for survey abundance estimation and the consistency... -
The Shockley five-parameter model of a solar cell: A short note
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: H.A. Koffi --- Department of Physics, Ghana A. Kuditcher --- Department of Physics, Ghana V.C.K. Kakane --- Department of Physics, Ghana E.A. Armah --- Department of Physics, Ghana A.A. Yankson --- Department of Physics, Ghana J.K.A. Amuzu --- Department of Physics, GhanaThis paper is concerned with an alternative formulation of the Shockley five-parameter model of a solar cell. This formulation leads to an explicit relationship between the short-circuit current and the light-generated current and the direct determination of the light-generated current... -
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... -
Annual cycle of the upper-ocean circulation and properties in the tropical western Indian Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Manyilizu --- Department of Oceanography, South Africa P Penven --- Ifremer, Univ. Brest, CNRS, IRD, Laboratoire dʹOcéanographie Physique et Spatiale (LOPS), France CJC Reason --- Department of Oceanography, South AfricaA regional ocean model was used to simulate the annual cycle of the upper-ocean dynamics and its influence on ocean properties in the tropical western Indian Ocean. Surface winds and heat fluxes from the National Centers for Environmental Prediction (NCEP)... -
Palliative chemotherapy in recurrent carcinoma cervix: experience from a regional cancer centre in southern India
Item type: Journal Article • Journal: Southern African Journal of Gynaecological Oncology • Authors: Ravikiran Bonanthaya --- Department of Radiation Oncology, India KC Lakshmaiah --- Department of Medical Oncology, India Suresh Babu --- Department of Medical Oncology, India D Lokanatha --- Department of Medical Oncology, IndiaAims: To evaluate the clinical outcome and complications with two different palliative chemotherapy regimens in recurrent cervical carcinoma. -
Predictors of multiple concurrent and multiple sexual partnerships among male and female youth aged 18–24 in South Africa
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Motlatso Gladys Mlambo --- Centre for Rural Health, Family Medicine Department, South Africa Karl Peltzer --- HIV/AIDS/STIs and TB (HAST), Human Sciences Research Council, South Africa Witness Chirinda --- Medical Research Council, South AfricaThis study aimed to determine predictors of multiple concurrent and multiple sexual partnerships among South African male and female youth. Data were from a cross-sectional population-based household survey of 3 123 youths aged 18 to 24 years from four South... -
Distribution of calcareous nannoplankton in surface sediments along the northern KwaZulu-Natal Bight, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MN Ovechkina --- Geological Sciences, School of Agricultural, Earth and Environmental Sciences, South Africa MB Mostovski --- School of Life Sciences, South Africa R Uken --- Geological Sciences, School of Agricultural, Earth and Environmental Sciences, South AfricaThe coccolith assemblages from seafloor sediments over the inner shelf in the northern region of the KwaZulu- Natal Bight on the east coast of South Africa were identified and their distribution determined. In all, 29 Recent species and taxonomic groups,... -
Species composition, abundance and biomass of microphytoplankton in the KwaZulu-Natal Bight on the east coast of South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JS van der Molen --- Council for Scientific and Industrial Research, South Africa UM Scharler --- School of Life Sciences, South Africa D Muir --- Medgar Evers College, City University of New York, USANearshore marine environments are influenced by an array of variables that can either be land-derived or of marine origin, and nearshore phytoplankton communities may differ in their taxonomic composition and biomass in response to such variables. The KwaZulu-Natal Bight (hereafter... -
Riverine influence determines nearshore heterogeneity of nutrient (C, N, P) content and stoichiometry in the KwaZulu-Natal Bight, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: UM Scharler --- School of Life Sciences, South Africa MJ Ayers --- School of Life Sciences, South Africa AM de Lecea --- School of Life Sciences, South Africa M Pretorius --- Department of Biodiversity and Conservation Biology, South Africa ST Fennessy --- Oceanographic Research Institute, South Africa JA Huggett --- Branch: Oceans and Coasts, Department of Environmental Affairs, South Africa CF MacKay --- Oceanographic Research Institute, South Africa D Muir --- Medgar Evers College, USARiverine influences on nearshore oceanic habitats often have detrimental consequences leading to algal blooms and hypoxia. In oligo- to mesotrophic systems, however, nutrient delivery via rivers may stimulate production and even be a vital source of nutrients, as may nutrient... -
A system-level modelling perspective of the KwaZulu-Natal Bight ecosystem, eastern South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: UM Scharler --- School of Life Sciences, South Africa RC van Ballegooyen --- Coastal Systems Research Group, South Africa MJ Ayers --- School of Life Sciences, South AfricaThe KwaZulu-Natal Bight comprises the only sizeable shelf region on the eastern coast of South Africa, and is influenced by both the Agulhas Current on its seaward side and rivers and estuaries on its landward side. Established knowledge of the... -
Dynamics and role of the Durban cyclonic eddy in the KwaZulu-Natal Bight ecosystem
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: LA Guastella --- Bayworld Centre for Research and Education, South Africa MJ Roberts --- Ocean Sciences and Marine Food Security, South AfricaThe semi-permanent Durban Eddy is a mesoscale, lee-trapped, cold-core cyclonic circulation that occurs off the east coast of South Africa between Durban in the north and Sezela, some 70 km to the south. When present, strong north-eastward countercurrents reaching 100... -
Circulation of shelf waters in the KwaZulu-Natal Bight, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MJ Roberts --- Ocean Sciences and Marine Food Security, South Africa C Nieuwenhuys --- Bayworld Centre for Research and Education, South Africa LA Guastella --- Bayworld Centre for Research and Education, South AfricaShip-based acoustic Doppler current profiler (S-ADCP) technology, used in survey mode, has enabled near- synoptic views of the in situ 3-D current field in the KwaZulu-Natal (KZN) Bight to be elucidated for the first time. Data acquired by the research... -
Observations and mechanisms of upwelling in the northern KwaZulu-Natal Bight, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MJ Roberts --- Ocean Sciences and Marine Food Security, South Africa C Nieuwenhuys --- Bayworld Centre for Research and Education, South AfricaNew in situ time-series data were acquired by two ADCP moorings placed on the shelf off Richards Bay on the east coast of South Africa at depths of 25 m and 582 m between October 2009 and August 2010. The... -
Modelling the tides and their impacts on the vertical stratification over the Sofala Bank, Mozambique
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CM Chevane --- Instituto Nacional de Hidrografia e Navegação, Mozambique P Penven --- LMI ICEMASA, Laboratoire de Physique des Océans, France FPJ Nehama --- Escola Superior de Ciências Marinhas e Costeiras, Mozambique CJC Reason --- Department of Oceanography, South AfricaThe Sofala Bank, a wide shelf located along the central coast of Mozambique, hosts tides with high amplitudes. The Regional Ocean Modelling System (ROMS) was used to analyse the tidal currents on the bank and to investigate their effects on... -
Double trouble: hoarseness and Horner’s after supraclavicular brachial plexus block
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Rohini Mayur Balaji --- Kauvery Hospital, India Khaja Mohideen Sherfudeen --- Kauvery Hospital, India Senthil Kumar --- Kauvery Hospital, IndiaSupraclavicular brachial plexus block is a popular procedure for surgeries of the upper limb. Although separate instances of Horner’s syndrome and recurrent laryngeal nerve palsies have been previously reported with this approach and one combined incidence has been reported following... -
Sexual and reproductive health risk behaviours among South African university students: results from a representative campus-wide survey
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Susie Hoffman --- HIV Center for Clinical and Behavioral Studies, USA Michael Levasseur --- Department of Epidemiology, USA Joanne E. Mantell --- HIV Center for Clinical and Behavioral Studies, USA Mags Beksinska --- Department of Obstetrics and Gynaecology, Faculty of Health Sciences, Maternal, Adolescent and Child Health Research Unit (MatCH Research Unit), South Africa Zonke Mabude --- Department of Obstetrics and Gynaecology, Faculty of Health Sciences, Maternal, Adolescent and Child Health Research Unit (MatCH Research Unit), South Africa Claudia Ngoloyi --- Department of Obstetrics and Gynaecology, Faculty of Health Sciences, Maternal, Adolescent and Child Health Research Unit (MatCH Research Unit), South Africa Elizabeth A. Kelvin --- Epidemiology and Biostatistics Program, School of Urban Public Health, Hunter College & The CUNY School of Public Health, USA Theresa Exner --- HIV Center for Clinical and Behavioral Studies, USA Cheng-Shiun Leu --- HIV Center for Clinical and Behavioral Studies, USA Lavanya Pillay --- Department of Obstetrics and Gynaecology, Faculty of Health Sciences, Maternal, Adolescent and Child Health Research Unit (MatCH Research Unit), South Africa Jennifer A. Smit --- Department of Obstetrics and Gynaecology, Faculty of Health Sciences, Maternal, Adolescent and Child Health Research Unit (MatCH Research Unit), South AfricaAmong South African university students, HIV prevalence is lower than in age-peers, but at 3.8% it is not negligible. We examined prevalence of factors potentially associated with HIV risk, focusing on partnership characteristics and consistent condom use. We hypothesised that... -
Transport and transformation of surface water masses across the Mascarene Plateau during the Northeast Monsoon season
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: P Vianello --- Nansen-Tutu Centre for Marine Environmental Research, South Africa IJ Ansorge --- Department of Oceanography, Marine Research Institute, South Africa M Rouault --- Nansen-Tutu Centre for Marine Environmental Research, South Africa M Ostrowski --- Institute of Marine Research, NorwayThe Mascarene Plateau lies in the south-west Indian Ocean between the islands of Mauritius and the Seychelles Bank, and is characterised by a series of shallow banks separated by deep (>1 000 m), narrow channels. The plateau acts as an... -
Concurrent alcohol and tobacco use among school-going adolescents in Namibia: Prevalence and risk factors
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Karl Peltzer --- HIV/AIDS/STIs/and TB (HAST), South Africa Supa Pengpid --- Department of Research and Innovation, South AfricaThe aim of this study was to investigate the prevalence and risk factors for concurrent alcohol and tobacco use among school-going adolescents in Namibia. Data were from a sample of 4 531 Namibian middle school children (females = 53.1%; mean... -
Tumour and treatment factors influencing the outcome of chemo-radiation in stage IIB cervical cancer: a single institution experience
Item type: Journal Article • Journal: Southern African Journal of Gynaecological Oncology • Authors: Mtabeni Jemu --- Division of Radiation Oncology, South Africa Leon van Wijk --- Division of Radiation Oncology, South Africa Michelle Parker --- Radiobiology Section, Division of Radiation Oncology, South Africa Glenn Jones --- School of Clinical Medicine and Research, BahamasObjective: This study examined the effects of treatment and tumour factors on the overall survival of patients completing chemo-radiation for stage IIB cervical cancer, to identify modifiable factors that might improve outcome. -
Environmental responses of jellyfish polyps as drivers of medusa populations off the coast of Namibia
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L Ziegler --- Department of Biodiversity and Conservation Biology, South Africa MJ Gibbons --- Department of Biodiversity and Conservation Biology, South AfricaJellyfish populations in the southeastern Atlantic off the coast of Namibia have increased subsequent to the decline of small pelagic fisheries at the end of the 1960s, although the environment there has also become warmer and the waters off Walvis... -
Local food and authenticity in Greek restaurants
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Gerasimos-Panagiotis Angelopoulos --- Academy of International Hospitality Research, Stenden Hotel Management School, the Netherlands Jan Arend Schulp --- Academy of International Hospitality Research, Stenden Hotel Management School, the Netherlands Vanessa de Oliveira Menezes --- Academy of International Hospitality Research, Stenden Hotel Management School, the NetherlandsThis article aims to understand the role of local food and authenticity for restaurateurs in Athens and Patras, Greece. Nine restaurant owners were interviewed about their current dishes, menu and ingredients. The results of this qualitative research indicate that, for... -
Knysna Estuary health: ecological status, threats and options for the future
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: L Claassens --- Department of Zoology and Entomology, South Africa RSK Barnes --- Department of Zoology and Entomology, South Africa J Wasserman --- Department of Botany, DST/NRF Research Chair in Shallow Water Ecosystems, South Africa SJ Lamberth --- Fisheries Research and Development, Department of Environment, Forestry and Fisheries, South Africa NAF Miranda --- Department of Botany and Zoology, South Africa L van Niekerk --- Council for Scientific and Industrial Research, South Africa JB Adams --- Department of Botany, DST/NRF Research Chair in Shallow Water Ecosystems, South AfricaThe Knysna Estuary is South Africa's most important estuary in terms of conservation, containing an estimated 42% of all estuarine biodiversity. Despite formal protection the estuary is open access and vulnerable to resource exploitation, development, pollution and freshwater inflow alterations... -
Zoogeography of marine Bryozoa around South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MK Boonzaaier-Davids --- , South Africa WK Florence --- , South Africa MJ Gibbons --- , South AfricaThe zoogeography of marine Bryozoa around South Africa was investigated using published distribution records, museum catalogues, and an examination of previously unworked bryozoan material in (mostly) museum collections. Although a total of 276 valid species are recognised, it was not... -
Assessment of an HIV-prevention intervention for couples in peri-urban Uganda: pervasive challenges to relationship quality also challenge intervention effectiveness
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Phoebe Kajubi --- , Uganda Allison Ruark --- , USA Norman Hearst --- , USA Sam Ruteikara --- , Uganda Edward C Green --- , USAReducing multiple and concurrent partnerships has been identified as a priority in generalised HIV epidemics, yet developing successful interventions to bring about such behaviour change has proven challenging. We offered a three-session intervention aimed to improve couple relationship quality and... -
Determination of the series resistance of a solar cell through its maximum power point
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: H. A. Koffi --- , Accra, Ghana A. A. Yankson --- , Accra, Ghana A. F. Hughes --- , Accra, Ghana K. Ampomah-Benefo --- , Accra, Ghana J. K. A. Amuzu --- , Accra, GhanaA simple analytical approach has been developed to determine the series resistance, R s, of a solar cell. The method adopted here depends only on the knowledge of the open-circuit voltage, V oc, and the current and voltage at the... -
Women’s perspectives on relationship dynamics with their partners and their role in HIV acquisition, HIV disclosure, hormonal contraceptive uptake, and condom use
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: John C Chapola --- , Malawi Kendra Hatfield-Timajchy --- , USA Agatha K Bula --- , Malawi Stacey Hurst --- , USA Lameck Chinula --- , Malawi Athena P Kourtis --- , USA Jennifer H Tang --- , MalawiBackground: Limited information exists about relationship dynamics and their role in HIV acquisition, HIV disclosure, hormonal contraceptive uptake, and condom use among women in Malawi. -
Characterising the seasonal cycle of wind forcing, surface circulation and temperature around the sub-Antarctic Prince Edward Islands
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T Toolsee --- , South Africa T Lamont --- , South Africa M Rouault --- , South Africa I Ansorge --- , South AfricaLocated between the sub-Antarctic Front and the Antarctic Polar Front, the Prince Edward Islands (PEIs) provide an essential breeding ground for top predators and are an ideal location to investigate disturbances linked to climate change. This study provides the first... -
Cross-shelf movement of Chrysaora fulgida (Scyphozoa; Discomedusae) off Namibia inferred from stable isotopes (δ15N and δ13C)
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: H Skrypzeck --- , South Africa CD van der Lingen --- , South Africa MJ Gibbons --- , South AfricaLarge and small specimens of two species of metagenic Scyphozoa (true jellyfishes) can be found in nearshore waters off central Namibia throughout the year. Whereas populations of Chrysaora africana are largely restricted to inshore waters, C. fulgida occurs across the... -
Distribution patterns of intertidal oribatid mites (Acari, Oribatida) from South African shores and their relationship to temperature
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T Pfingstl --- , Austria J Baumann --- , Austria J-A Neethling --- , South Africa I Bardel-Kahr --- , Austria EA Hugo-Coetzee --- , South AfricaA faunistic study of the intertidal oribatid mite fauna of South Africa’s coastline revealed the presence of four species from three families, showing specific biogeographic patterns. Their occurrences show a clear east–west divide, with a small gap near East London... -
Investigating the influence of the extreme Indian Ocean Dipole on the 2020 influx of Red-necked Phalaropes Phalaropus lobatus in Kenya
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Raphaël Nussbaumer --- , Kenya Mathieu Gravey --- , Switzerland Améline Nussbaumer --- , Kenya Colin Jackson --- , KenyaOcean currents have wide-ranging impacts on seabird movement and survival. By extension, the extreme oscillations they are subject to, such as extreme Indian Ocean Dipole (IOD) events, can also be expected to dramatically influence seabird populations. This study links the... -
Quality of life and its predictors among clients visiting antiretroviral therapy clinics in Addis Ababa, Ethiopia
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Tariku Shimels --- , Ethiopia Gelila Bogale --- , Ethiopia Rodas Asrat Kassu --- , Ethiopia Teferi Gedif --- , EthiopiaThis study assessed the quality of life (QoL) and associated factors among a group of clients visiting ART clinics in Addis Ababa, Ethiopia. A multi-site cross-sectional study was conducted from 1 to 30 August 2020. Adults with HIV and who... -
Psychosocial well-being of child orphans: The influence of current living place
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Beneyam Lake Yimer --- , EthiopiaWhen children lose one or both their parents/care givers, they may present with profound and lifelong psychosocial well-being problems. This study aimed to examine the association between current living place and the psychosocial well-being of child orphans. A proportional stratified... -
High-risk behaviors among adult men and women in Botswana: Implications for HIV/AIDS prevention efforts
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Mpho Keetile --- , , BotswanaThe government of Botswana has been spending a lot of money in the prevention, treatment, care and support for HIV/AIDS patient for decades. This paper uses data from the third Botswana AIDS Impact Survey (BAIS III) to explore high-risk behaviors... -
‘It’s not good to eat a candy in a wrapper’: male students’ perspectives on condom use and concurrent sexual partnerships in the eastern Democratic Republic of Congo
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Maroyi Mulumeoderhwa --- , , South AfricaThis paper reports on fieldwork carried out in 2011 with aim to investigate young men’s perspectives about condoms use, concurrent sexual partnerships and sex in the context of HIV/AIDS. This study employed a qualitative approach to collect data from 28... -
Making sense of fidelity: young Africans’ cross-national and longitudinal representations of fidelity and infidelity in their HIV-related creative narratives, 1997–2014
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Robyn Singleton --- Banyan Communications, USA Manon Billaud --- Rollins School of Public Health at Emory University, USA Haley McLeod --- Rollins School of Public Health at Emory University, USA Georges Tiendrebeogo --- Laafi Consulting, Burkina Faso Fatim Dia --- Rollins School of Public Health at Emory University, USA Chris Obong’o --- PATH, Kenya Siphiwe Nkambule-Vilakati --- Super Buddies Club, Swaziland Benjamin Mbakwem --- Community and Youth Development Initiatives, Nigeria Gaelle Sabben --- Rollins School of Public Health at Emory University, USA Kate Winskell --- Rollins School of Public Health at Emory University, USAMutual fidelity and partner reduction have been identified as key behavioural strategies to prevent HIV transmission in sub-Saharan Africa, particularly following recognition of the role that multiple concurrent sexual partnerships play in driving generalised HIV epidemics. We analysed social representations... -
Post-traumatic growth in Chinese parents of children with autism spectrum disorder: Statuses and personal factors
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Ming Hong --- , ChinaThis study aimed to characterise post-traumatic growth among parents of children with autism spectrum disorder (ASD) and the related factors. Participants were 396 parents of children with autism from Guangdong Province, China (female = 65.15 %; mean age = 33.67... -
Predation on the St Joseph Callorhinchus capensis by Cape fur seals Arctocephalus pusillus pusillus in Namibia
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: RH Leeney --- Namibia Nature Foundation, Namibia N Dreyer --- Ocean Conservation Namibia, NamibiaChondrichthyans form an important part of marine food webs as top predators and mesopredators. However, little is known about chondrichthyans in Namibian waters and the roles they play in ecosystem function. During efforts to disentangle Cape fur seals Arctocephalus pusillus... -
Semi-c-periodicity, c-uniform recurrence and almost automorphy in the complex plane
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: H. Ounis --- University of Alicante, Spain J.M. Sepulcre --- University of Alicante, SpainThis paper is devoted to develop the concepts of semi-c-periodicity, c-uniform recurrence and almost automorphy for functions defined on vertical strips in the complex plane, where c is a non-zero complex number. As an extension of the study performed for... -
Long-term interannual temperature variability across the KwaZulu-Natal Bight as a technique for monitoring the complex uThukela Marine Protected Area, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: N Ramsarup --- University of Cape Town, South Africa T Morris --- , South Africa J Hermes --- University of Cape Town, South Africa M Dicken --- Institution for Coastal and Marine Research, Ocean Sciences Campus, Nelson Mandela University, South AfricaThe uThukela Marine Protected Area (MPA), situated on the continental shelf of the KwaZulu-Natal (KZN) Bight on the northeastern coast of South Africa, has been identified as a vital ecological region. Knowledge of the oceanographic dynamics in the region is...
