Faculty of Natural Science: Recent submissions
Now showing items 121-140 of 2593
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ISOLATION AND CHARACTERIZATION OF ANTIMICROBIAL COMPOUNDS FROM GALENIA AFRICANA
(University of the Western Cape, 2001)Galenia africona, commonly known as "kraalbos" or "geelbos" belonging to the family Aizoaceae, is a dominant plant throughout the Namaqualand area. It is an active invader and is especially abundant in disturbed areas ... -
The influence of maternal nicotine exposure on neonatal lung development: An enzymatic and metabolic study
(University of the Western Cape, 1999)Chapter I, the literature review, gives the reader a sound background knowledge of the following: normal lung structural development in humans and rats, metabolic development with reference to structural development, tobacco ... -
Effect of simulated acid rain on seed germination and on growth and mineral nutrition of Lycopersicon esculentum var. Red kaki
(University of the Western Cape, 1993)The phenomenon of acid rain is not new. It has been active for more than a billion years (Abelson, 1983). The term "acid rain" was introduced as early as 1872 by Robert Angus Smith, the world's first air pollution control ... -
A case study of university students' experiences of introductory physics drawn from their approaches to problem solving
(University of the Western Cape, 2001)This thesis explores the experience of leaming physics through a particular medium: problem-solving, which is seen by many educators as the primary medium in which physics is learnt at university. Situating itself within ... -
Computation of the character tables of certain group extensions
(University of the Western Cape, 1997)In this chapter some basic theory on group extensions is first given in section 1.1 and then a method for finding the conjugacy classes of group extensions is described in section i.2. In section 1.3 we look at an example ... -
The effects of Exomis micriphylla and Atriplex lindleyi on metabolism and health
(University of the Western Cape, 2002)For many decades people have used plants for healing various ailments. Plant products have been used in herbal remedies especially for their anti-infective properties. The following study was undertaken to assess the ... -
Application of Several Time Series Methods to Three Important Financial Time Series
(University of the Western Cape, 2007)This study is concerned with three different financial time series over an eight year period, namely: the government repurchase rate, the Rand-Dollar exchange rate and the Allshare Index. The aim is to better understand ... -
Tumour suppression and subdual of cancer (tussc) in elephants: An in vitro study to shed light on Peto’s paradox
(University of the Western Cape, 2022)Logic would suggest that cancer incidence is related to body mass and longevity. Gigantic animals such as elephants with a longer lifespan (more lifetime of cell divisions) and a larger body size (more cells) will have ... -
Mineralogy and chemical mobility in a weathered ash dump site, South Africa
(University of the Western Cape, 2010)Coal fly ash generated from coal fired plants poses potential health risks to humans and plants in the environment due to the surface enrichment of the ash with various toxic trace elements during combustion. Only a small ... -
Mathematical epidemiology of malaria disease transmission and its optimal control analyses
(University of the Western Cape, 2010)In this thesis, we present and analyse an SEIR (susceptible-exposed infectious-recovered) model for malaria disease transmission. The model consists treatment and control strategies such as the use of bed nets and spray ... -
The effects of clipping and burning on the allocation of total nonstructural carbohydrates and selected mineral nutrients in Imperata cylindrica (L.) Raeuschel
(University of the Western Cape, 1999)The rhizomatous grass, Imperata cylindrica, occurs in the Cape Flats Nature Reserve (CFNR), South Africa. It is recognised globally as a weed of crop plants. The response of this weed to defoliation, in the forms of clipping ... -
Biomonitoring as a means to determine the pollution level in Stellenbosch
(University of the Western Cape, 1991)A pollution survey was done in Stellenbosch, along two transects. One was south-east and the north-east of the Oorrobrick brickfield the focal point of this study. Pine and Oak trees, chasman the leaves and lichens were ... -
Isolation, identification and characterization of novel actinomycetes from Antarctic soil samples
(University of the Western Cape, 2008)Actinomycetes are Gram-positive bacteria that form filamentous branching hyphae with asexual spores. They occur in a variety of environments and are important industrially and pharmaceutically. The aims of this study were ... -
The oxidation of the lower primary alcohols ln a catalytic membrane reactor
(University of the Western Cape, 2000)Methanol and ethanol are important chemical feedstock used in industrial chemistry, since they are the starting materials for the synthesis of various products, including hydrocarbons and mild oxidation products. For ... -
Singular integral equations and realization: A survey of the state space method
(University of the Western Cape, 1996)Different methods for solving singular integral equations exist. One of the most recent methods is the so-called state space method. This method is based on the fact that a rational matrix function VV(^) which is analytic ... -
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 ... -
Cardiovascular effects of aqueous leaf extract of Leonotis leonurus in Anesthetized rats
(University of the Western Cape, 2008)The present study was designed to evaluate the hypotensive properties and the mechanisms of action of the aqueous leaf extract of Leonotis leonurus in anesthetized male Wistar rats, using computerized blood pressure ... -
Reconstruction of major male and female lineages of the kensington Muslim community
(University of the Western Cape, 2010)The earliest Cape Muslims were brought to the Cape from Africa and Asia from 1652 to 1834. They were part of an involuntary migration of slaves, political prisoners and convicts, and they contributed in the ethnic diversity ... -
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 ... -
The identification of regulatory Elements in pseudomonas aeruginosa and p. putida responsive to specific heavy metals.
(University of Western Cape, 1999)Heavy metals constitute a group of about sixty-five elements having a density greater than five (Gadd and Griffiths, 1978). Some metals, for example lead, copper, and nickel are extremely precious and profitable to man ...