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Now showing items 1925-1944 of 8878
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Determinants of viral suppression among adolescents on antiretroviral therapy in Thabo Mofutsanyane District Municipality, Free State province, South Africa
(University of Western Cape, 2021)In 2018, it was estimated that 33,000 adolescent girls and 4,200 adolescent boys were HIV-positive in South Africa. The Free State province reports that 89% of people living with HIV are diagnosed; 72% of those diagnosed ... -
Determinants of viral suppression among adolescents on antiretroviral therapy in the Sedibeng District, Gauteng province
(University of Western Cape, 2021)Approximately 1.75 million adolescents (10-19 years old) globally were living with human immunodeficiency virus (HIV) in 2020, with the Eastern and Southern African regions the most affected by HIV. Progress has been made ... -
Determinants of youth sexual behaviours and knowledge of reproductive tract infections (RTIs) and sexually transmitted infections (STIs) in Malawi : evidenced from the Demographic Health Survey 2010
(University of the Western Cape, 2015)The sexual behaviour of youths is believed to play a role in the spread of SexuallyTransmitted Infections (STIs) and Reproductive Tract Infections (RTIs). This study examinesthe determinants of youth sexual behaviours and ... -
The determination of boron using 11B(p, α)8Be nuclear reaction
(UWC, 2008)Determination of trace quantities of boron is required in various studies of materials and in geology. Using 11B(p, α)8Be nuclear reaction with focused proton beam of 670 keV energy is one of the few microanalytical ... -
Determination of Chromium(VI), Vanadium(V), Selenium(IV) and Zinc(II) in the City of Cape Town's potable water by stripping voltammetry at boron doped diamond electrodes
(University of the Western Cape, 2011)The main aim of this study is to investigate theelectrochemical determination of two beneficial (selenium and zinc) and two toxic (chromium and vanadium) metals in the potable water within the City of Cape Town's ... -
The determination of diffracted wave fields by an annulus according to Braunbek’s method
(University of the Western Cape, 1981)In this thesis a short wave approximation, the method oI W Braunbek, is used to determine the diffracted fields (acoustic and electromagnetic) of plane harmonic waves by an annular aperture. Integral representations ... -
The determination of excitation functions for natRb+p up to 100 MeV with an emphasis on the production of 82Sr
(UWC, 2000)The radioisotope strontiuur-S2 (T172= 25.55 days) decays to short-lived t"Rb 1T,, = 76 seconds) by l00o/o electron caphue @C). The short-lived t'*Rb decays by g5.SYopositron-ernissiou p* and 4.5%oEC to stable'2Kr. Rubidiurn-82g ... -
Determination of fumonisins in maize by High Performance Liquid Chromatography with fluorescence and ultraviolet detection of o-phthaldialdehyde, naphthalene-2,3-dicarboxaldehyde and dansyl chloride derivatives
(University of the Western Cape, 2011)Fumonisins, carcinogenic mycotoxins produced by various Fusarium species, occur naturally in maize and maize-based food products. They are hazards for animal and human health as they cause cancer in rodents and have been ... -
Determination of groundwater-surface water interaction, upper Berg River catchment, South Africa
(University of the Western Cape, 2015)The present study investigated the application of a multi-method approach to determine groundwater-surface water (GW-SW) interactions to quantify and characterize the quality of water resources in a fractured rock aquifer ... -
Determination of heavy metals at the electrochemically reduced graphene oxide mercury film electrode (ERGO-HgF-PGE) using adsorptive stripping voltammetry
(University of Western Cape, 2020)This work reports the use of a pencil graphite electrode (PGE) as inexpensive and sensitive electrochemical sensing platform fabricated by using electrochemically reduced graphene oxide (ERGO) in conjunction with an ... -
Determination of kanamycin plasma concentrations using LC/MS and pharmacokinetics of kanamycin in patients with multidrug-resistant tuberculosis and in patients with multidrug-resistant tuberculosis co-infected with HIV
(University of the Western Cape, 2012)The aim of the study was to determine firstly, kanamycin plasma concentrations using liquid chromatography coupled with mass spectrometry (LC/MS); secondly, to investigate the PK parameters of kanamycin in patients infected ... -
Determination of natural radioactivity concentrations in soil: a comparative study of Windows and Full Spectrum Analysis
(University of the Western Cape, 2004)In this study, two methods of analysing activity concentrations of natural radionuclides (U, Th and K) in soil are critically compared. These are the Window Analysis (WA) and Full Spectrum Analysis (FSA). In the usual WA ... -
Determination of paracetamol at the electrochemically reduced graphene oxide-metal nanocomposite modified pencil graphite (ERGO-MC-PGE) electrode using adsorptive stripping differential pulse voltammetry
(University of Western Cape, 2020)This project focuses on the development of simple, highly sensitive, accurate, and low cost electrochemical sensors based on the modification of pencil graphite electrodes by the electrochemical reduction of graphene ... -
Determination of plasma concentrations using Lc/ms and pharmacokinetics of ofloxacin in Patients with multi-drug resistant tuberculosis and In patients with multi-drug resistant tuberculosis co- Infected with hiv
(University of the Western Cape, 2009)Many studies have investigated the pharmacokinetics of anti-tuberculosis drugs in patients infected with tuberculosis. However, little is known about the pharmacokinetics of the drugs that are used in the treatment of ... -
Determination of plasma concentrations using LC/MS and pharmacokinetics of ofloxacin in patients with multi-drug resistant tuberculosis and in patients with multi-drug resistant tuberculosis coinfected with hiv
(2009)Many studies have investigated the pharmacokinetics of anti-tuberculosis drugs in patients infected with tuberculosis. However, little is known about the pharmacokinetics of the drugs that are used in the treatment of ... -
Determination of pyrazinamide plasma concentrations using lc-ms and pharmacokinetics of pyrazinamide in patients with multidrug-resistant tuberculosis and in patients co-infected with multidrug-resistant tuberculosis and HIV
(2013)Tuberculosis and HIV are arguably South Africa’s largest and most important health issues. With drug-resistant strains of tuberculosis on the increase and little research on new drugs, there is an urgent need for research ... -
Determination of Thallium and Indium with an Electrochemically-reduced Graphene Oxide-Carbon Paste Electrode by Anodic Stripping Voltammetry
(University of the Western Cape, 2018)In this study, graphene oxide was synthesized by oxidizing graphite using the modified Hummer's method. The graphene oxide was characterized by Raman Spectroscopy, Fourier Transform Infrared Spectroscopy, High Resolution ... -
Determination of the gas-flow patterns inside the hot-wire chemical vapor deposition system, using computational fluids dynamics software (fluent)
(University of the Western Cape, 2009)Computational Fluid Dynamics is the analysis of a system involving fluid flow, heat transfer and associated phenomena such as chemical reactions by means of a computer-based simulation. The simulations in this study are ... -
Determination of the photopeak detection efficiency of a HPGe detector, for volume sources, via Monte Carlo simulations
(University of the Western Cape, 2005)The Environmental Radioactivity Laboratory (ERL) at iThemba LABS undertakes experimental work using a high purity germanium (HPGe) detector for laboratory measurements. In this study the Monte Carlo transport code, MCNPX, ... -
Determination of the Spectroscopic Quadrupole moment of the first 2+ excited state in 32S
(University of the Western Cape, 2019)In this work we have determined the spectroscopic or static quadrupole moment of the rst excited state (QS (2+1) lying at 2230.6 keV in 32S using the reorientation e ect. The Coulomb-excitation experiment at safe ...