Search
Now showing items 1-10 of 85
Functional and structural diversity of the microbial communities associated with the use of Fischer–Tropsch GTL Primary Column Bottoms as process cooling water
(North-West University, 2011)
Despite emerging water shortages, most water is only used once, and often with low efficiency. However, with appropriate treatment, water can be re–used to reduce the demand on freshwater sources. The Department of Water ...
Properties and use of SO2 for the hybrid sulfur process
(North-West University, 2011)
Thematic interrelation is an underdeveloped field of inquiry in Lukan studies. The
design and elegance of Lukan theology begs for guided investigation into a possible
system of organisation that governs history and ...
Development of an assured systems management model for environmental decision–making
(North-West University, 2011)
The purpose of this study was to make a contribution towards decision–making in complex
environmental problems, especially where data is limited and associated with a high degree of
uncertainty. As a young scientist, I ...
Critical perspectives on the definition of waste in South Africa : experiences within the steelmaking industry
(North-West University, 2011)
During the past few decades the focus of waste management in South Africa has been emphasised, especially in view of the increase in economic development which has resulted in an increase in commercial, industrial, hazardous, ...
Investigation into the occurrence of the dinoflagellate, Ceratium hirundinella in source waters and the impact thereof on drinking water purification
(North-West University, 2011)
The Ceratium species occurring in the Vaal River since 2000, was identified as Ceratium hirundinella (O.F. Müller) Dujardin as proposed by Van Ginkel et al (2001). Ceratium hirundinella is known to cause problems in drinking ...
Status of resistance of Helicoverpa armigera (Lepidoptera: Noctuidae) and Diparopsis castanea (Lepidoptera: Noctuidae) to Bt cotton in South Africa
(North-West University, 2011)
Genetically modified (GM) cotton expressing Cry1Ac proteins was released in South Africa in 1997 for control of the bollworm complex on this crop. No reports of the failure of Bollgard® cotton to control these pests have ...
Evaluation of a ceramic membrane bioreactor functioning under non-steady state operational parameters for the removal of pollutants from municipal wastewater plant effluent
(North-West University (South Africa), 2011)
In South Africa ill-managed municipal wastewater treatment plants limit the quality and quantity of already exploited surface water resources. Elevated nitrate levels cause eutrophication and chemicals (measured as chemical ...
The association between physical activity, blood pressure and renin in black African teachers : the SABPA study
(North-West University, 2011)
Objectives: The aim of this study was to determine associations between physical activity (PA), blood pressure (BP) and renin in urban black Africans. Methods: The study sample included 137 urban African males (N=68) and ...
Unique challenges of clay binders in a pelletised chromite pre–reduction process : a case study
(North-West University, 2011)
As a result of increasing cost, efficiency and environmental pressures ferrochrome producers strive towards lower overall energy consumption. Increases in local electricity prices have placed particular pressure on South ...
Plant and arthropod diversity of maize agro–ecosystems in the Highveld and Lowveld regions of South Africa
(North-West University, 2011)
Surveys of plant and selected insect species was conducted in Highveld and Lowveld
agro–ecosystems of four provinces of South Africa, namely North–West, Mpumalanga,
KwaZulu–Natal and Limpopo. The objectives of the study ...