Browsing Faculty of Natural Science by Title
Now showing items 1171-1190 of 2547
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Hydrogeophysical characterization of coastal aquifers for solution-based modeling, West Coast, South Africa
(University of Western Cape, 2021)The need to improve groundwater security remains critical especially in urban areas where demand for groundwater as an alternative source of water supply increases. Declining trends in availability of surface water because ... -
Hydrological Characterisation of Wetlands: Understanding wetlands-catchment linkages
(University of the Western Cape, 2017)This study explores the hydrological processes of selected wetlands in four different catchments in South Africa (the Nuwejaars River in the Western Cape which has the Elandsdrift-Wiesdrift wetland; the Mohlapetsi river ... -
Hydrophilic Polysulfone-Hydrogel Membrane Material for Improved Nanofiltration in Wastewater Treatment
(University of the Western Cape, 2013)Over the last decade polysulfone membranes have been demonstrated to be one of the best membrane types in wastewater treatment, especially in ultrafiltration, owing to its mechanical robustness, structural and chemical ... -
Hydrosalinity fluxes in a small scale catchment of the berg river (Western Cape)
(2008)The objective of this study was to determine the hydrosalinity fluxes associated with overland and subsurface (vadose zone) flow for different soils and land uses. For this purpose, the following data were collected during ... -
Hydrosalinity Fluxes in a Small Scale Catchment of the Berg River (Western Cape)
(University of the Western Cape, 2008)The occurrence of dryland salinity is widespread throughout semi-arid regions of the world. The sources of salts may be either rock weathering or rain deposition. Clearing of natural scrubland to make way for cultivated ... -
Hydrothermal conversion of agricultural and food waste
(University of Western Cape, 2022)The global dependence on non-renewable fossil fuels to meet energy needs cannot be sustained for a long time and it is already evident in the escalation of fuel prices over the past decade. This research was performed ... -
Hydrothermal synthesis and optimisation of zeolite Na-P1 from South African coal fly ash
(2009)Millions of tonnes of fly ash are generated worldwide every year to satisfy the large demand for energy. Management of this fly ash has been a concern and various approaches for its beneficial use have been investigated. ... -
Hydrothermal synthesis and optimisation of zeolite Na-Pl from South African coal fly ash
(University of Western Cape, 2009)Millions of tonnes of fly ash are generated worldwide every year to satisfy the large demand for energy. Management of this fly ash has been a concern and various approaches for its beneficial use have been investigated. ... -
Hydrothermal synthesis of hierarchical ZSM-5 with different Si/Al ratio and their evaluation as catalysts in the catalytic cracking of hexane
(University of Western Cape, 2021)Ethylene and propylene are greatly used for their importance as feedstocks for producing useful materials. Due to rise in prices and the demand of ethylene and propylene, the need to increase the selective production of ... -
Hyperactivation in human semen and sperm subpopulations by selected calcium modulators
(University of the Western Cape, 2014)A functional sperm is critical for successful fertilization in order to deliver an intact genome to the site of fertilization. It is often characterized by high motility and normal morphology. Moreover, sperm hyperactivated ... -
Hyperglycinemia in captive-bred vervet monkeys with cataracts: genetic dynamics and associations
(University of the Western Cape, 2017)A small percentage (8%) of the captive-bred vervet monkeys (Chlorocebus aethiops) maintained at Primate Unit and Delft Animal Centre (PUDAC) of the South African Medical Research Council (SAMRC) were found to have high ... -
Identification and characterisation of a novel gene, DWNN, isolated from promoter-trapped Chinese hamster ovary cells
(University of the Western Cape, 2005)The process of cytotoxic T lymphocyte (CTL) killing involves the recognition and destruction of foreign antigens by cytotoxic T cells and is of crucial importance to the defence of the organism against viral infections. ... -
Identification and characterisation of cephalosporins and carbapenem-resistant Klebsiella pneumoniae isolates from Misrata, Libya
(University of the Western Cape, 2018)Background: Extended-spectrum beta-lactamase-producing (ESBL) and carbapenemaseproducing Gram-negative bacilli showing resistance to cephalosporins and carbapenems respectively, have been reported from several countries ... -
Identification and characterisation of hemicellulases from thermophilic Actinomycetes
(University of the Western Cape, 2010)To ensure the sustainability of bioethanol production, major attention has been directed to develop feedstocks which provide an alternative to food-crop biomass. Lignocellulosic (LC) biomass, which is chiefly composed of ... -
Identification and characterisation of novel cellulolytic genes using metagenomics
(University of the Western Cape, 2010)Metagenomics has been successfully used to discover novel enzymes from uncultured microorganisms in the environment. In this study, metagenomic DNA from a Malawian hot spring soil sample was used to construct a fosmid ... -
Identification and characterisation of potential virulence genes of Salmonella from rooibos tea
(University of the Western Cape, 2015)The aim of this study was to investigate the presence of Salmonella in the tea processing environment, to identify and detect potential virulence genes isolated from Salmonella in the tea, and to determine the antibiotic ... -
Identification and characterisation of sorghum bicolor heme oxygenase-1 (sbho1) gene and its role in conferring biotic and abiotic stress tolerance to plants
(University of the Western Cape, 2019)Biotic and abiotic stresses such as herbivore attack, pathogen infection, salinity, drought, cold, heat and UV radiation, are unfavourable conditions that affect plant growth and productivity globally (Fedoroff et al., ... -
Identification and characterisation of the role of endozepine in apoptosis induced by ceramide
(University of the Western Cape, 2003)Apoptosis is a form of programmed cell death and is required for the normal development, tissue homeostasis and survival of organisms. The identification of mutations that can lead to alterations in cell death not only ... -
Identification and characterization of microorganisms associated with marine macroalgae Splachnidium rugosum
(University of the Western Cape, 2014)Marine macroalgae are known to carry diverse bacterial communities which interact with their hosts in both harmful and beneficial ways. Algae hosts provide the bacteria with a rich source of carbon in the form of carbohydrate ... -
Identification and characterization of microRNAs and their putative target genes in Anopheles funestus s.s
(2013)The discovery of microRNAs (miRNAs) is one of the most exciting scientific breakthroughs in the last decade. miRNAs are short RNA molecules that do not encode proteins but instead, regulate gene expression. Over the past ...