Browsing Faculty of Natural Science by Title
Now showing items 507-526 of 2593
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Detection of positive selection resulting from Nevirapine treatment in longitudinal HIV-1 reverse transcriptase sequences
(University of the Western Cape, 2006)Nevirapine (NVP) is a cheap anti-retroviral drug used in poor countries worldwide, administered to pregnant women at the onset of labour to inhibit HIV enzyme reverse transcriptase. Viruses which may get transmitted to ... -
Detection of selective tyrosinase inhibitors from some South African plant extracts of lamiaceae family
(University of the Western Cape, 2016)Various dermatological disorders, such as formation of black pigmented patches on the surface of the skin arise from the over-activity of tyrosinase enzyme's degenerative action. This enzyme is further implicated in the ... -
Detection of selective Tyrosinase inhibitors from some South African plant extracts of Lamiaceae family
(University of the Western Cape, 2016)Various dermatological disorders, such as formation of black pigmented patches on the surface of the skin arise from the over-activity of tyrosinase enzyme's degenerative action. This enzyme is further implicated in the ... -
Determinants of access and utilization of health care facilities among women in South Africa: The case of the Eastern Cape province
(University of the Western Cape, 2022)Access to healthcare is a requirement for human well-being. However, women who seek medical care when needed are still confronted with significant access barriers. This study aimed to identify the factors influencing the ... -
Determinants of contraceptive use among currently married women in Amhara and Oromiya Regions of Ethiopia
(University of the Western Cape, 2009)The purpose of this research is to study the effect of different demographic and socio economic factors on the contraceptive use among currently married women of age 15-49 in the two regions of Ethiopia, Amhara (17,214,056) ... -
Determinants of female labour force participation in South Africa in 2008
(2009)South Africa’s female labour supply increased substantially over almost the past two decades. Female labour force participation is an imperative indication of the extent to which females participate in the economic activities ... -
Determinants of female labour force participation in South Africa in 2008
(University of the Western Cape, 2009)This study employs the Human Capital Theory (HCT), which postulates that the education of women is positively related to the likelihood of their labour force participation, in order to investigate quarterly dynamics in the ... -
Determinants of health care use and mothers' preventative and curative health care practices in Burkina Faso
(University of the Western Cape, 2022)In about two-thirds of all countries in sub-Saharan Africa, low coverage of effective interventions to prevent maternal and child deaths has been attributed to both weaknesses in the supply and demand for health services. ... -
Determinants of household access to and perceived quality of water in South Africa
(University of the Western Cape, 2022)Like many African countries, South Africa is challenged with uneven distribution and insufficient access to potable water. The issue of inadequate access to water is more pronounced in the marginalized region where most ... -
The determinants of mothers’ access to antenatal healthcare in South Africa: insights from the Eastern Cape province
(2023)Eastern Cape Province has historically experienced challenges in its improvements and provisions for women’s access to primary healthcare facilities. Women in the Eastern Cape province continue to lack access to antenatal ... -
The determinants of under-five child mortality in the state of Palestine and Malawi: A comparative study
(University of the Western Cape, 2022)Mortality is one of the significant vital events for which a government collects data, especially child mortality, because it is one of the contributing indicators that are used to assess the wellbeing of a nation. ... -
Determinants of under-five mortality in South Africa: A logistic regression
(University of the Western Cape, 2019)While several interventions have been implemented over the past decade to combat child mortality, under-five mortality remains a challenge especially in Sub-Saharan Africa. Global-ly, child mortality has decreased to half ... -
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 ...