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Showing results 141 to 150 of 162344

  1. Studies in South African marine molluscan chemistry.
    Bromley, Candice Leigh, 2011
    This thesis investigates the variability occurring in the secondary metabolites produced by three South African marine molluscs. Chapter Two discusses the isolation and spectroscopic structure elucidation of the metabolites isolated from two Siphonaria species. The re-investigation of Siphonaria cap ...
  2. The druggable antimalarial target 1-deoxy-D-xylulose-5-phosphate reductoisomerase:purfication, kinetic characterization and inhibition studies.
    Goble, Jessica Leigh, 2011
    Plasmodium falciparum 1–deoxy–D–xylulose–5 phosphatereductoisomerase (PfDXR) plays a role in isoprenoid biosynthesis in the malaria parasite and is absent in the human host, making this parasite enzyme an attractive target for antimalarial drug design. To characterize PfDXR, it is necessary to prod ...
  3. Testing the existence and direction of "spill-over" of mussel recruits beyond the boundaries of marine protected areas.
    Ludford, Adam, 2010
    Landscape ecology helps in predicting the influence of habitat fragmentation on populations. Marine protected areas (MPAs) are expected to create areas of good quality patches and so improve connectivity among shores. MPAs are believed not ouly to protect adult populations, but also to enhance recr ...
  4. Investigation of photosensitising behaviour of Ni, Pd and Pt phthalocyanines towards phenolic pollutants
    Ogunbayo, Taofeek Babatunde, 2011
    Syntheses of various octasubstituted open-shell (Ni(II), Pd(II) and Pt(II)) metallophthalocyanines and their metal-free analogues have been carried out. Spectroscopic characterizations, photophysical and photochemical studies were carried out to determine the effects of these metals on the molecules ...
  5. Modelling the relationship between flow and water quality in South African rivers
    Slaughter, Andrew Robert, 2011
    The National Water Act (Act 36 of 1998) provides for an ecological Reserve as the quantity (flow) and quality of water needed to protect aquatic ecosystems. While there are methods available to quantify the ecological Reserve in terms of flow, methods of linking flow to water quality are lacking. Th ...
  6. Effect of nanoparticles on the photophysicochemical behaviour of metallophthalocyanines
    Moeno, Sharon Keitumetse Gail Mpheletso, 2011
    The synthesis, spectroscopic characterization, and studies of the photophysicochemical behaviour of selective anionic, cationic and neutral metallophthallocyanine (MPc) complexes were carried out and the results are presented herein. Studies on the effect of the central metal ion, the solvent used a ...
  7. A study of employee satisfaction in two manufacturing facilities of General Motors South Africa
    Matutoane, Leanetse Paul, 2009
    Employed individuals spend a majority of their waking time at work. Therefore, within an individual’s working lifetime, most hours will be spent at work. Subsequently, theories abound purporting that humans are hedonistic beings. Considering that on average people spend most of their working lives ...
  8. Beyond Afrocentricism and Orientalism : contemporary representations of transnational identities in the works of Nontsikelelo "Lolo" Veleko and Tracy Payne
    Pycroft, Hayley, 2010
    South African photographer Nontsikelelo “Lolo” Veleko and South African painter Tracy Payne explore different ways of communicating African realities. The visual imagery of these two artists focuses a lot on movement, challenging the rigidity of boundaries set by Western social constructs. In their ...
  9. Psigobiografiese persoonlikheidsbeskrywing van Generaal Christiaan de Wet
    Henning, Riana, 2010
    Hierdie is "n psigobiografiese studie van Generaal Christiaan Rudolph de Wet. "n Psigobiografiese studie is die bestudering van "n persoon se volledige lewe met die doel om die persoon beter te verstaan. Psigobiografiese navorsing maak gebruik van psigologiese teorieë wat aangewend word om die biogr ...
  10. Developing a systematic model for the capturing and use of African oral poetry : the Bongani Sitole experience.
    Mostert, Andre, 2010
    Oral traditions and oral literature have long contributed to human communication.The advent of arguably the most important technology, the written word, altered human ability to create and develop. However, this development for all its potential and scope created one of the most insidious dichotomie ...