Browsing Faculty of Natural Science by Title
Now showing items 25-44 of 2597
-
Active neutralisation and amelioration of acid mine drainage with fly ash
(University of the Western Cape, 2009)Fly ash and AMD samples were characterised by standard analytical methods for selection of the test materials. Active treatment by means of mixing fly ash with AMD in beakers and a large tank at pre-determined ratios have ... -
Active neutralisation and amelioration of acid mine drainage with fly ash
(University of the Western Cape, 2009)Due to the constraints being placed on water resources and a drive for major industries to recycle waste water, improved and cheaper water treatment technologies are being investigated. During mining, pyrite (FeS2), a ... -
Acute and chronic toxicity of the flavonoid-containing plant, Artemisia afra in rodents
(University of the Western Cape, 2005)The aim of this study was to investigate the possible toxicity of the flavonoid-containing plant, Artemisia afra and especially establish the safety of the aqueous extract of this plant after acute and chronic administration ... -
Additional regulatory review pathways can facilitate faster dossier approvals in South Africa
(University of the Western Cape, 2019)The objective of the study was to perform a comparative review of pathways, timelines and improvements of countries with markets that the South African Health Products Authority (SAHPRA) benchmark themselves against. ... -
Adenine nucleotides and selected chemical Parameters as potential markers for fertility assessment
(University of the Western Cape, 1997)Diagnostic andrology with its descriptive approach to the diagnosis of defective sperm for the last 40 years has focused mainly on the macro- and microscopic appearance of the ejaculate. More emphasis has recently been ... -
The adenomatous polyposis coli (APC) and p53 gene status in South African oesophageal cancer patients
(University of the Western Cape, 1996)Oesophageal cancer is the most conmon cause of cancer-related deaths in black males in South Africa. In an effort to understand the molecular nature of oesophageal carcinogenesis in South Africa, two tumour suppressor ... -
Adequacy of existing protected areas in conserving biodiversity at global and regional levels in relation to socio-economic conditions
(University of the Western Cape, 2005)At a meeting of worl leaders at the United Nations Conference on Environment and Development in Rio de Janeiro in 1992, it was recognized that because of the tremendous increase in the size of the global populations (which ... -
Advanced low temperature metal hydride materials for low temperature proton exchange membrane fuel cell application
(University of the Western Cape, 2010)Energy is one of the basic needs of human beings and is extremely crucial for continued development of human life. Our work, leisure and our economic, social and physical welfare all depend on the sufficient, uninterrupted ... -
Advanced materials on the basis of nanostructured catalysed magnesium hydride for hydrogen storage
(University of the Western Cape, 2019)Magnesium hydride has long been regarded as a promising candidate for lightweight hydrogen storage applications, owing to reasonably high theoretical capacity (7.6 wt. %). It is burdened by slow absorption/desorption ... -
Advanced oxidative water treatment process using an electrohydraulic discharge reactor and TiO2 immobilised on nanofibres
(University of Western Cape, 2013)The aim of this study was to design and build an electrohydraulic discharge reactor in such a way that the synthetic immobilized TiO2 nanophotocatalytic components could be integrated, for the production of active species ... -
Advanced oxygen reduction reaction catalysts/material for direct methanol fuel cell (dmfc) application
(University of the Western Cape, 2014)Fuel cells are widely considered to be efficient and non-polluting power source offering much higher energy density. This study is aimed at developing oxygen reduction reactions (ORR) catalysts with reduced platinum (Pt) ... -
Advanced Ti – based AB and AB2 hydride forming materials
(University of the Western Cape, 2011)Ti – based AB and AB₂ hydride forming materials have shown to be very promising hydrogen storage alloys due to their reasonable reversible hydrogen storage capacity at near ambient conditions, abundance and low cost. ... -
Adverse effects experienced by patients on first line antiretroviral drugs used at Keetmanshoop Hospital (Namibia).
(University of the Western Cape, 2015)Adverse effects are a significant factor that determine how long patients will tolerate a given antiretroviral drug regimen. They also influence treatment options, and play an important role in the much needed adherence ... -
Adverse Foetal Outcomes in Gestational Diabetes: A Systematic Review and Meta-analysis
(University of the Western Cape, 2020)Gestational diabetes mellitus (GDM) is a condition that affects pregnant women and is one of the most common complications related to pregnancy. According to the World health organisation (WHO), the usual window for ... -
Adverse pregnancy outcomes among HIV-positive pregnant women treated with efavirenz-containing antiretroviral drugs: a retrospective cohort study in the Cape Flats
(University of the Western Cape, 2017)The use of efavirenz (EFV) in the first trimester of pregnancy remains controversial. In South Africa, the use of EFV-containing antiretroviral therapy (ART) as part of a Fixed Dose Combination (FDC) during the first trimester ... -
Affective gesture fast-track feedback instant messaging (AGFIM)
(University of Western Cape, 2005)Text communication is often perceived as lacking some components of communication that are essential in sustaining interaction or conversation. This interaction incoherency tends to make text communication plastic. It is ... -
African female migrants and housing acquisition in South Africa: A comparison between 2001 and 2011 Population Census
(University of Western Cape, 2021)African female migrants make up a large portion of the population in general and in South Africa in particular. This includes both the documented and the undocumented female migrants. Nonetheless, they are confronted with ... -
The AIDS transition: Impact of HIV/ AIDS on the demographic transition of black/ African South Africans by 2021
(University of Western Cape, 2004)The first two official AIDS cases were diagnosed in South Africa in 1982. During the same period of the 1980s, the black/ African population was experiencing an accelerated fertility decline, following a period of ... -
The AIDS transition: impact of HIV/AIDS on the demographic transition of black/African South Africans by 2021
(University of the Western Cape, 2004)The first two official AIDS cases were diagnosed in South Africa in 1982. During the same period of the 1980s, the black/African population was experiencing an accelerated fertility decline, following a period of accelerated ... -
Aluminium and gold functionalized graphene quantum dots as electron acceptors for inverted Schottky junction type rainbow solar cells
(University of Western Cape, 2020)The main aim of this study was to prepare band gap-engineered graphene quantum dot (GQD) structures which match the different energies of the visible region in the solar spectrum. These band gap-engineered graphene quantum ...