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Toepassíng van ‘n gronderosievergelyking op natuurlike veld van die sentrale oranje‐vrystaat
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: H A Snyman --- , W L J Van Rensburg --- , D P J Opperman --- ,‘n Oorhoofse roterende rcënvalnabootscr is gebruik orn numericse waardes vir sekere faktore van die universele gronderosi‐evcrgelyking vas te stel. Alhocwei dit tydens hierdie Studie nodig was om sekere belangrike aannames te maak, het die afgeleide data betekenisvol ooreengestem met die... -
A simple, accurate method of estimating maximum total evaporation from a wheat crop during the daylight period
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: W.H. van Zyl --- Department of Agrometeorology, Republic of South Africa J.M. de Jager --- Department of Agrometeorology, Republic of South Africa C.J. Maree --- Department of Agrometeorology, Republic of South AfricaThe use of empirical relationships for the calculation of the energy and aerodynamic components of the Penman-Monteith equation were tested against measured data. Accurate estimates of maximum total evaporation, Em, from a wheat crop were obtained. The empirical equation utilizes... -
The erodibility of some soil series In the pineapple-producing coastal area of the eastern Cape
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.O. Hartmann --- Department of Agriculture and Water Supply, Republic of South Africa P.J. McPhee --- Division of Agricultural Engineering, Department of Agriculture and Water Supply, Republic of South Africa M.L. Bode --- Department of Agriculture and Water Supply, Republic of South AfricaA rotating-boom rainfall simulator was used to measure soil losses from eight soil series falling within five morphologically dissimilar soil forms, i.e. Bonheim, Glenrosa, Kroonstad, Mayo and Oakleaf. The data obtained were used to calculate the soil erodibility factor (K)... -
THE USE OF BENZOCAINE HYDROCHLORIDE AS FISH TRANQUILLIZER AND ANAESTHETIC IN SALINE WATERS
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: W.T. Barham --- Department of Zoology, South Africa K.M. Caiger --- Department of Zoology, South Africa J. G.J. Visser --- Department of Zoology, South AfricaThe anaesthetic effects of various concentrations of benzocaine hydrochloride were tested on Liza macrolepis and Sarotherodor mossambicus in sea water and diluted sea water, respectively. Induction time for anaesthesia was negatively correlated with increasing anaesthetic concentrations in L. macrolepis. -
NOMENCLATURE OF THE TILAPIAS OF SOUTHERN AFRICA
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: E. Trewavas --- , England -
Faithfulness to partners: a means to prevent HIV infection, a source of HIV infection risks, or both? A qualitative study of women's experiences in Abidjan, Côte d'Ivoire
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: ThomasM Painter KassambaL Diaby DanielleM Matia LillianS Lin ToussaintS Sibailly MoïseK Kouassi EhounouR Ekpini ThierryH Roels StefanZ WiktorA cross-sectional study was carried out at a programme to prevent mother-to-child transmission of HIV (MTCT) at a public antenatal clinic in Abidjan, Côte d'Ivoire. The objectives were to obtain information from women concerning their reactions to HIV test results... -
Older people living with HIV in Uganda: understanding their experience and needs
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: MonicaO Kuteesa --- , Australia Janet Seeley --- Uganda Research Unit on AIDS, Uganda RobertG Cumming --- , Australia Joel Negin --- , AustraliaOlder adults ageing with HIV in Africa have been largely neglected, despite the distinctive healthcare needs of this population. This article examines the medical care experiences of older Ugandans living with HIV. Data were collected from 40 HIV-positive adults, aged... -
Effects of three agricultural by-products on cage culture growth performances of a landlocked population of Sarotherodon melanotheron (Teleostei: Cichlidae) in man-made Lake Ayame, Côte d'Ivoire
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NI Ouattara V N'Douba GG Teugels JC PhilippartIn man-made Lake Ayame, a 180-day cage culture feeding trial was conducted to investigate the effects of three agricultural by-products — chicken droppings, wheat bran and corn bran — on the survival rates, mean daily weight gain and feed conversion... -
Idiopathic acquired progressive left facial hemiatrophy (Parry-Romberg syndrome) in a 21-year-old man in semi-urban, south-west Nigeria
Item type: Journal Article • Journal: South African Family Practice • Authors: FA Imarhiagbe --- Department of Medicine, Federal Medical Centre, Nigeria AO Adeoti --- Department of Medicine, NigeriaIdiopathic progressive hemifacial atrophy, or Parry-Romberg syndrome, is a rare entity, seldom described in medical texts. Though first described in 1825, as yet there are no clear-cut diagnostic criteria. It is of interest mainly because of the numerous features with... -
A rapid assessment of species-specific bird strike risk at the Kotoka International Airport in Accra, Ghana
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Lars H Holbech --- Department of Animal Biology and Conservation Science, Ghana Augustus Asamoah --- Ghana Wildlife Society, Ghana Erasmus H Owusu --- Department of Animal Biology and Conservation Science, GhanaThe Kotoka International Airport in Accra, the capital city of Ghana, has in recent years been confronted with increased presence of birds posing great challenges to aviation safety due to a high risk of bird strikes. As part of measures... -
Intraspecific morphological divergence in two Cichlid species from Benin
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Luke M Bower --- Program in Ecology and Evolutionary Biology and Department of Wildlife and Fisheries Sciences, USA Laith A Jawad --- Freelance Fish Biodiversity Consultant, New Zealand Pierre M Gnohossou --- Département d’Aménagement et Gestion de Ressources Naturelles, Republic of Benin Ayoko Géraldine Tossou --- Département d’Aménagement et Gestion de Ressources Naturelles, Republic of BeninSelection on morphological traits can vary across the range of species, inducing a mosaic of phenotypes across populations. Intraspecific morphological divergence had been demonstrated for many fish groups inhabiting environments with varying abiotic or biotic selective pressures. Such intraspecific phenotypic... -
Vacillating vaccines: responses to Covid-19 in the United States and South Africa
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Theodore Powers --- Anthropology, University of Iowa, United States of America Jimmy Pieterse --- University of Pretoria, South AfricaThis article examines the internal pathways of disease transfer within two settler colonies, the United States and South Africa, whilst also considering points of transnational connection in the social, political, epidemiological, religious and cultural responses to the Covid-19 pandemic in... -
Employing behavioural portfolio theory for sustainable investment: Examining drawdown risks and ESG factors
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Aayush Poddar --- Indian Institute of Technology, India Sujoy Bhattacharya --- , R Rathish Bhatt --- Management, Goa Institute of Management, IndiaThis study uses behavioural portfolio theory (BPT) within the Markowitz Portfolio Theory framework to enhance portfolio management by focusing on sustainability and risk mitigation during market downturns. It selects portfolios to hedge against market lows using Conditional Drawdown at Risk...