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This thesis comprises 5 chapters. The first chapter is concerned with the general problem of setting up approximations to arbitrary functions by linear combinations of sets of functions of known structure. The second chapter discusses the mathematical basis of the various approximation criteria...

A Vegetation survey was carried out within a 300 km area around Gwabi on the Zambian side of the middle Zambezi Valley with emphasis on regenerating fields abandoned after clearing. Information was collected on the previous and present status of such fields. The Braun-Blanquet phytosociological...

Wetland processes are strongly influenced by hydrologic factors such as precipitation, surface runoff, and flooding dynamics. Anthropogenic disturbances to flooding regimes can thus substantially alter wetland habitat and biogeochemistry. The Kafue Flats, a large floodplain (-6,500 Km^) along the...

Lusaka sits on a limestone rock formation which makes recharge as well as pollution of groundwater very easy due to the presence of channels created by solution weathering. Informal/unplanned settlements where waste disposal facilities are non-existent are potential groundwater contamination...

A proposed Localized Geography Curriculum which engages Upper Basic School Pupils in Issues of Environment Protection of Luangwa district of Zambia is meant to assist in reducing environmental degradation. Luangwa district has been experiencing serious environmental degradation arising from a...

Blood sampler- from children with malaria, were used to set up iri_ vitro cultures of Plasmodium falciparam using fresh human serum to enrich the culture medium. A number of investigation:-; airafid at improving the i_n vitro cultivation t e c h n i q u e ware carried out. Changing culture;...

Findings in the Sudan show a possible association between aflatoxins and kwashiorkor, a category of Protein-Energy Malnutrition (PEM). Similarities in the geographical and seasonal prevalence of aflatoxins and kwashiorkor, as well as similarities in the metabolic derangements caused by aflatoxins...

The aflatoxins, toxins produced by the fungus Aspergillus flavus, have been detected in both imported as well as locally grown maize in Zambia.The problem of toxicity caused by the ingestion of aflatoxin-contaminated maize was approached by determining the levels of residues in edible tissue of...