Browsing Faculty of Natural Science by Title
Now showing items 2411-2430 of 2565
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The role of arylamine N-acetyltransferase 1 (NAT1) in the clinical therapy of tuberculosis
(University of the Western Cape, 2017)Despite attempts to develop new drugs to reduce the worldwide mortality rate attributable to tuberculosis (TB), the illness remains a threat. Isoniazid (INH) has been used as a frontline drug for decades. However, several ... -
The role of the glutathione system in regulating the levels of ROS neutralisation in the endothelial cells of the blood-brain barrier
(University of the Western Cape, 2017)Brain endothelial cell types are frequently used as in vitro models to study the blood-brain barrier (BBB). Oxidative stress (OS) has been reported numerous times to cause BBB dysfunction which is crucial to the initiation ... -
The safety and toxicity of MPA-CdTe quantum dots in legume plants
(University of the Western Cape, 2017)The expansion of nanotechnology, resulting in multitudes of consumer and industrial products, causes concern amongst the scientific community regarding the risks associated with the release of nanomaterials into the ... -
The use of complementary and alternative medicines in the treatment of menopausal symptoms by private healthcare patients in Pretoria, South Africa
(University of the Western Cape, 2017)BACKGROUND The use of complementary and alternative medicine (CAM) is widespread in the treatment of menopausal symptoms. While observational studies indicate that CAMs can bring some relief of symptoms, there is mixed ... -
The use of in vitro assays to screen for endocrine modulation
(University of the Western Cape, 2008)Aspalathus linearis (A. linearis), commonly known as Rooibos tea or Red bush tea and Camellia sinensis (C. sinensis) or Black tea are beverages that are consumed throughout the world. These teas possess antioxidant, ... -
The use of whole blood cell cultures as a model for assessing the effects of Septilin on the immune system
(University of the Western Cape, 2017)In the past three decades there has been a huge increase in the use of herbal medicine globally. The active principles of these herbal medicines are mostly unknown with supportive evidence for safety and efficacy very ... -
A theoretical study of stellar pulsations in young brown dwarfs
(University of the Western Cape, 2011)This thesis reports the results of a twofold study on the recently proposed phenomenon of 'stellar pulsations' in young brown dwarfs by the seminal study of Palla and Baraffe (2005) (PB05, thereafter). The PB05 study ... -
A theoretical study of stellart pulsations in young brown dwarfs
(University of the Western Cape, 2011)This thesis reports the results of a twofold study on the recently proposed phenomenon of ‘stellar pulsations’ in young brown dwarfs by the seminal study of Palla and Baraffe (2005) (PB05, thereafter). The PB05 study ... -
Thermal stability and defect structure of hot-wire deposited amorphous silicon
(UWC, 2004)Hydrogenated amorphous silicon (a-Si:H) thin films are presently used in several large-area thin-film applications. However, one major concern of a-Si:H is the fact that the stability of the material degrades when it is ... -
Thermochemical Storage and Lithium Ion Capacitors Efficiency of Manganese-Graphene Framework
(University of the Western Cape, 2018)Lithium ion capacitors are new and promising class of energy storage devices formed from a combination of lithium-ion battery electrode materials with those of supercapacitors. They exhibit better electrochemical properties ... -
Thermochromic properties of VO2 nano-coatings by inverted cylindrical magnetron sputtering
(University of the Western Cape, 2012)Vanadium dioxide (VO2) films have been known as the most feasible thermochromic nano-coatings for smart windows which self control the solar radiation and heat transfer for energy saving and comfort in houses and automotives. ... -
Thiolato schiff base complexes of nickel and palladium as mesogens and molecular wires
(University of the Western Cape, 2003)Thermal analysis data of compounds A, C, F and I established that they were nonmesogenic while E and G were found to be mesogenic. The lack of mesogenic behaviour of A could be attributed to hydrogen bonding. The ... -
Three dimensional thermal modelling of high temperature proton exchange membrane fuel cells in a serpentine design
(University of the Western Cape, 2010)The aim of my work is to model a segment of a unit cell of a fuel cell stack using numerical methods which is classified as computational fluid dynamics and implementing the work in a commercial computational fluid dynamics ... -
Three-dimensional structure of a type III glutamine synthetase by single particle reconstruction
(University of the Western Cape, 2007)This study represents the first structural investigation of any type III glutamine synthetase (GS). The GS, GlnA, from the medically important opportunistic human pathogen Bacteroides fragilis was studied with a view to ... -
Throughput of UWC students who did at least one semester of third-year statistics
(University of the Western Cape, 2005)This study explored the completion rates (the number of years a student takes to complete a degree) of graduates at the University of the Western Cape. Differences between students who finished their studies in the prescribed ... -
Throughput of UWC students who did at least one semester of third-year Statistics
(University of the Western Cape, 2005)The study explores the completion rates (the number of years a student takes to complete a degree) of graduates at the University of the Western Cape (UWC) in South Africa. The graduates in the study all did at least one ... -
Tin Catalyst preparation for Silicon Nanowire synthesis
(University of the Western Cape, 2018)Solar cells offer SA an additional energy source. While Si cells are abundantly available they are not at an optimal efficiency and the cost is still high. One technology that can enhance their performance is SiNW. ... -
Tin-oxide thin films by thermal oxidation
(University of Western Cape, 2021)Tin dioxide (SnO2) thin films are a worthy candidate for an electron transport layer (ETL) in perovskite solar cells, due to its suitable energy level, high electron mobility of 240 cm2 v-1 s- 1, desirable band gap of ... -
TiO2 nanotube based dye- sensitised solar cells
(University of Western Cape, 2012)This work investigated the synthesis of Al2O3-coated TiO2 nanotubes via the anodisation technique for application in DSCs. TiO2 nanotube arrays with an average length of 15 μm, diameter of 50 nm and wall thickness of 15 ... -
TiO₂ nanotube based dye-sensitised solar cells
(University of the Western Cape, 2012)The first report of a functioning photo-electrochemical solar cell in 1991 attracted a lot of interest from scientists and industrial groups. From an industrial point of view these so-called dye-sensitised solar cells ...