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Effects of Mediated Learning Experience, Tutor Support and Peer Collaborative Learning on Academic Achievement and Intellectual Functioning among College Students
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Joseph Seabi --- University of the Witwatersrand, Kate Cockcroft --- University of the Witwatersrand, Peter Fridjhon --- University of the Witwatersrand,The main objective of this study was to investigate the effects of mediated learning experience, tutor support and peer collaborative learning on academic achievement and intellectual functioning. The sample comprised 111 first year engineering students (males=38, females=73, age range =16–23),... -
Distribution and habitats of Bulinus natalensis and its role as intermediate host of economically important helminth parasites in South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: KennéN de Kock CorneliusT WolmaransThis article focusses on the geographical distribution and habitats of Bulinus natalensis, as reflected by the samples taken from 244 collection sites on record in the database of the National Freshwater Snail Collection (NFSC) at the Potchefstroom campus of the... -
Gastropod diversity, distribution and abundance in habitats with and without anthropogenic disturbances in Lake Victoria, Kenya
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CN Lange --- Invertebrate Zoology Section, Kenya TK Kristensen --- Mandahl-Barth Research Centre for Biodiversity and Health in Developing Countries, DBL Centre for Health Research and Development, Denmark H Madsen --- Mandahl-Barth Research Centre for Biodiversity and Health in Developing Countries, DBL Centre for Health Research and Development, DenmarkWe investigated freshwater gastropod diversity, abundance and distribution in habitats with and without anthropogenic disturbance in two localities, Ndere in the Winam Gulf and Mbita Point, Lake Victoria, Kenya, from May 2002 to January 2004. A total of 133 984... -
“Shorthaul” pulpwood transport in South Africa. A network analysis case study
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Pierre A. Ackerman --- Forest Engineering, Faculty of Agricultural and Forestry Sciences, South Africa Reino E. Pulkki --- Faculty of Forestry and the Forest Environment, CanadaShorthaul transport, also known as secondary intermediate transport (SIT), is a feature of pulpwood transport in South Africa. SIT is an additional transport phase within traditional secondary transport. It originates at roadside landing or depot and terminates at another depot,... -
Interactions between Bulinus globosus and B. tropicus (Gastropoda: Planorbidae) in a pond experiment in Zimbabwe
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Busani Ndlela MosesJ Chimbari Henry MadsenBulinus tropicus, which does not transmit Schistosoma haematobium, has been suggested for biological control of the schistosome intermediate host Bulinus globosus in Zimbabwe. The possible competition between B. tropicus and B. globosus was evaluated under semi-natural conditions in an enclosure... -
A laboratory assessment of the potential molluscicidal potency of Jatropha curcas aqueous extracts
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MJ Chimbari CJ ShiffPreliminary laboratory studies were conducted to determine the molluscicidal potency of Jatropha curcas, the physic nut. Biomphalaria glabrata and Bulinus globosus snails were exposed to varying concentrations of aqueous extracts of crushed J. curcas seeds from unripe, ripe and overripe... -
Diversity, dispersal and disturbance: cladoceran species composition in the Okavango Delta
Item type: Journal Article • Journal: African Zoology • Authors: Markus Lindholm --- Norwegian Institute for Water Research/NIVA, Norway Dag O. Hessen --- Department of Biology, Norway Lars Ramberg --- Harry Oppenheimer Okavango Research Centre, University of Botswana, BotswanaCommunities exposed to intermediate disturbances have been shown to be more diverse than more stable or unstable systems. We recorded the diversity pattern of zooplankton in the Okavango Delta, Botswana, a system which include water bodies with different stability with... -
Locating bilharzia transmission sites in South Africa: guidelines for public health personnel
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: Chris Appleton --- School of Life Sciences, Nelson Miranda --- Department of Zoology, South AfricaBilharzia surveillance at local authority level in South Africa relies on public health personnel being able to locate transmission sites. Although several methods have been tried, the method of choice is collecting snails, identifying those that serve as intermediate hosts... -
The role of waterbirds in the dispersal of freshwater cladocera and bryozoa in southern Africa
Item type: Journal Article • Journal: African Zoology • Authors: Chevonne Reynolds --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Graeme S Cumming --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South AfricaIt has long been presumed that waterbirds disperse the propagules of aquatic organisms. However, it is only in recent years that this claim has been empirically explored and little is still known about waterbird-mediated dispersal in southern Africa. Aquatic invertebrates... -
Furcocercous cercariae shed by the freshwater snails Pila occidentalis (Mousson, 1887) and Biomphalaria pfeifferi (Krauss, 1848) in the Okavango Delta, Botswana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: C Jansen van Rensburg --- Department of Zoology and Entomology, South Africa PH King --- Department of Biology, South Africa JG van As --- Department of Zoology and Entomology, South AfricaDuring July 2009 and 2010 surveys of snail-borne larval trematodes of the Okavango Delta floodplains and lagoons were undertaken. Cercaria mohemboense were shed by Pila occidentalis (Mousson, 1887) and Cercaria dubaensis and Cercaria indistinctus were shed by Biomphalaria pfeifferi (Krauss,... -
Development of gene expression assays measuring immune responses in the spotted hyena (Crocuta crocuta)
Item type: Journal Article • Journal: African Zoology • Authors: Roxanne L Higgitt --- DST/NRF Centre of Excellence for Biomedical Tuberculosis Research/SAMRC Centre for TB Research/Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, South Africa Peter E Buss --- Veterinary Wildlife Services, South African National Parks, Kruger National Park, South Africa Paul D van Helden --- DST/NRF Centre of Excellence for Biomedical Tuberculosis Research/SAMRC Centre for TB Research/Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, South Africa Michele A Miller --- DST/NRF Centre of Excellence for Biomedical Tuberculosis Research/SAMRC Centre for TB Research/Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, South Africa Sven DC Parsons --- DST/NRF Centre of Excellence for Biomedical Tuberculosis Research/SAMRC Centre for TB Research/Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, South AfricaAs scavengers, spotted hyenas (Crocuta crocuta) are exposed to a wide array of pathogens but exhibit low mortality rates due to infectious disease. This suggests that this species exhibits a unique and robust immune response to pathogens. However, few tools... -
A productivity model for first thinning of Pinus patula using a tractor and double-drum winch in South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Thabo Moloi --- Forest Postgraduate Programme, South Africa Michal Brink --- Forest Postgraduate Programme, South Africa Paxie W Chirwa --- Forest Postgraduate Programme, South Africa Elisha Ngulube --- Department of Forestry, MalawiThe productivity of skidding tractors in intermediate harvesting operations has not been determined in Mpumalanga, South Africa. The objective of this study was to develop a productivity model using a farm tractor in first thinning operations in Pinus patula compartments... -
Rickets mimicker: a report of two cases of primary hyperparathyroidism in adolescence
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Imran M Paruk --- Department of Diabetes and Endocrinology, South Africa Fraser J Pirie --- Department of Diabetes and Endocrinology, South Africa Ayesha A Motala --- Department of Diabetes and Endocrinology, South AfricaThe presentation of primary hyperparathyroidism (PHPT) in most Western countries has evolved from the classic description of ‘stones, bones, and groans’ to becoming increasingly asymptomatic as a result of more frequent serum calcium screening. However, many developing countries are still... -
Transformational leadership, diversity climate, and job satisfaction in selected South African companies
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Sean McCallaghan --- NWU Business School, South Africa Leon T. B. Jackson --- NWU Business School, WorkWell Research Unit, South Africa Marita M Heyns --- Optentia Focus Area, South AfricaThis study investigated the relationship between transformational leadership, diversity climate, and job satisfaction in a selection of South African companies. Participants were a convenience sample of 263 employees from the Gauteng Province (white = 69.3%). They completed measures for transformational leadership, diversity... -
Prevalence and aetiology of thyrotoxicosis in patients with hyperemesis gravidarum presenting to a tertiary hospital in Cape Town, South Africa
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: T van der Made --- , South Africa M van de Vyver --- , South Africa M Conradie-Smit --- , South Africa Magda Conradie --- , South Africa -
Motivating people living with HIV to initiate antiretroviral treatment outside national guidelines in three clinics in the HPTN 071 (PopART) trial, South Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Constance Mubekapi-Musadaidzwa --- , South Africa Dillon Wademan --- , South Africa Neshaan Peton --- , South Africa Portia Hendricks --- , South Africa Gabriela Carolus --- , South Africa Rheiner Mbaezue --- , South Africa Karen F Kelley --- , South Africa James Kruger --- , South Africa Karen Jennings --- , South Africa Nelis Grobbelaar --- , South Africa Francoise Louis --- , South Africa Nulda Beyers --- , South Africa Helen Ayles --- , Zambia Sarah Fidler --- , UK Richard Hayes --- , UK Peter Bock --- , South Africa Graeme Hoddinott --- , South AfricaBackground: The HPTN 071 (PopART) trial implemented universal test and treat (UTT) in three clinics in the Western Cape, South Africa at a time when antiretroviral treatment (ART) was only offered by CD4 threshold and World Health Organization clinical staging... -
Dung and carrion beetle diversity in small forest patches versus large continuous forest in the southern Cape, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Graham van Bergen --- Nelson Mandela University, South Africa Anina Coetzee --- Nelson Mandela University, South Africa Jan A Venter --- Nelson Mandela University, South Africa Francois Roets --- Stellenbosch University, South Africa Rudi C Swart --- Nelson Mandela University, South AfricaNaturally fragmented indigenous forests in the southern Cape of South Africa are particularly understudied in terms of beetle diversity. This study therefore aimed to determine whether southern Afrotemperate forest dung and carrion beetle diversity differs between continuous forest and naturally...