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Showing results 162041 to 162050 of 168730

  1. The effect of mussel bed structure on the associated infauna in South Africa and the interaction between mussel and epibiotic barnacles
    Jordaan, Tembisa Nomathamsanqa, 2010
    Mussels are important ecological engineers on intertidal rocks where they create habitat that contributes substantially to overall biodiversity. They provide secondary substratum for other free-living, infaunal or epifaunal organisms, and increase the surface area for settlement by densely packing t ...
  2. Making sense of "essence" : a critical examination of the adequacy of the modern philosophical conception of "essence"
    Ross, Allison, 2000
    The idea that some sub-set of the properties of an object captures what it is to be that thing i.e. that it has an essence which is there to be discovered and about which we can be mistaken - is a commonsense assumption that we use all the time. However, philosophers of this century have regarded th ...
  3. A critical investigation of managing the standards development process for the life insurance industry in Namibia
    Kaimu, Himeesora Irene, 2003
    The development of standards for education and training is regarded as a very important activity by many countries. Any country that sets standards for education and training is trying to define its training system and avoid duplication of training by providers who do not see eye to eye. National st ...
  4. Emplacement of the 2.44 Ga ultramafic layered Kemi intrusion, Finland : PGE, geochemical and Sm-Nd isotopic implications.
    Linkermann, Sean Aaron, 2010
    Europe’s largest chrome deposit is hosted by the 2.44 Ga Kemi ultramafic layered intrusion. The lower half of the intrusion consists of peridotites, pyroxenites and chromitite layers while the upper half consists of websterites, gabbronorites and leucogabbros. The mafic minerals of the lower and upp ...
  5. The establishment of a virus free laboratory colony of Cryptophlebia leucotreta (False Codling Moth) and characterisation of Cryptophlebia leucotreta Granulovirus (CrleGV) genes.
    Ludewig, Michael Hans, 2003
    Cryptophlebia leucotreta is an economically important agricultural pest throughout Sub-Saharan Africa. CrleGV has been considered as an alternative to chemical control of this pest due to its host specificity and innocuous nature towards vertebrates. A CrleGV free laboratory colony of C. leucotreta ...
  6. The impact of media commercialisation on programming : a study of Radio Uganda.
    Lwanga, Margaret Jjuuko Nassuna., 2002
    The 1980s and 1990s saw two major changes in the political economy of the media and the world economy at large: technological advancement and transfer and privatisation. There were significant shifts in media industries: newspapers, broadcasting, cinema and telecommunications when governments begun ...
  7. Narratiewe strategieë by die ondersoek van die verlede in twee romans, naamlik Lijken op liefde (1997) deur Astrid H. Roemer en Duiwelskloof (1998) deur André P. Brink
    Potgieter, Maretha, 2001
    This study investigates some of the narrative strategies used by two novels, namely Lijken op Liefde (1997) by the Surinam born author Astrid H. Roemer and Duiwelskloof (1998) by the South African André P. Brink, in their exploration of and dialogue with traumatic pasts. Both texts are written withi ...
  8. Reproductive conflicts in honeybee colonies
    Pirk, Christian Walter Werner, 2001
    In advanced eusocial hymenopteran societies workers have ovaries and can lay eggs, but are unable to mate. Workers are more related to their own offspring than to every other member of the colony. So worker reproduction contains both worker-worker and worker-queen conflict. The queen- worker conflic ...
  9. Spirulina as a bioremediation agent : interaction with metals and involvement of carbonic anhydrase
    Payne, Rosemary Anne, 2000
    Heavy metal contamination from mining and other industrial operations is becoming an increasing problem with regards to the depleting water resources in South Africa. This study involved the investigation of the use of an algal biomass as a possible alternative to the traditional chemical means of ...
  10. Studies on mixed-species colonies of honeybees, Apis cerana and Apis mellifera
    Yang, Ming-Xian, 2009
    The honeybees Apis cerana and Apis mellifera are derived from the same ancestral base about two million years ago. With speciation and evolution, they have acquired many advanced living skills in common, but have also evolved very different living strategies due to different distributions. This thes ...