Browsing Faculty of Natural Science by Title
Now showing items 255-274 of 2565
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Carbon-carbon coupling reactions catalysed by palladium nanoparticles supported on the green alga Ulva armoricana
(University of Western Cape, 2018)The synthesis of nanomaterials, especially metallic nanoparticles, has attracted an enormous amount of interest over the past decade. They exhibit unique properties that allow the multiple applications in a variety of ... -
Cardiovascular effects of (13S)-9_, 13_- epoxylabda-6_(19), 15(14)diol dilactone, a diterpenoid isolated from the organic extract of leonotis leonurus leaves, in anaesthetized normotensive rats
(2009)Plants used in traditional medicines have served as sources of some of the drug compounds used in medicines today, and could still serve as leads for then development of new drugs to treat existing chronic diseases such ... -
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 ... -
Cardiovascular effects of Leonotis leonurus extracts in normotensive rats and in isolated perfused rat heart
(University of the Western Cape, 2004)This thesis discussed the cardiovascular effects of the aqueous leaf extract and a fraction of the methanol extract of Leonotis leonurus, a plant commonly used in traditional medicine in South Africa for the treatment of ... -
Cardiovascular effects, molecular docking and chemo informatics analysis of compounds isolated from leonotis leonurus
(University of the Western Cape, 2015)Leonotis leonurus (L. Leonurus) has relatively abundant diterpenes and has been used as a traditional herbal medicine for treating several ailments including influenza, muscular cramps, skin related diseases, menstrual, ... -
Carrier grade adaptation for an IP-based multimodal application server: moving the softbridge into SLEE
(University of the Western Cape, 2004)Providing carrier grade characteristics for Internet Protocol (IP) communication applications is a significant problem for IP application providers in order to offer integrated services that span IP and telecommunication ... -
Case study of collective action of women in response to water and food insecurity in the Ehlanzeni district municipality, Mpumalanga province
(University of the Western Cape, 2013)The historical patterns of access to water and other areas of public service delivery in South Africa predominantly favoured the white minority. There was inadequate distribution of water where townships and rural areas ... -
A case study of the nature of biology practical work in two secondary schools in Namibia
(2008)The aim of the study was to investigate the nature of biology practical work and associated discourses in two Namibian secondary schools. The purposive sample consisted of three biology teachers and 36 grade 11 students ... -
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 ... -
Catalyst Coated Membranes (CCMs) for polymerelectrolyte Membrane (PEM) fuel cells
(University of the Western Cape, 2010)The main objective of this work it to produce membrane electrode assemblies (MEAs) that have improved performance over MEAs produced by the conventional manner, by producing highly efficient, electroactive, uniform catalyst ... -
The catalytic membrane reactor for the conversion of methane to methanol and formaldehyde under mild conditions
(University of the Western Cape, 2005)This thesis described the development of new catalytic system for the conversion of natural gas (methane) to liquid products such as methanol and formaldehyde. This technology can allow the exploitation of small and medium ... -
A categorical study of persistent homology for closure space
(University of the Western Cape, 2023)We begin with the concept of closure space and show how it relates to other objects like graphs and metric spaces in categorical terms. We also study the notion of simplicial sets and show that there is an adjunction between ... -
Cation-exchanged zeolites-A prepared from South African fly ash feedstock for CO2 adsorption
(University of the Western Cape, 2015)In South Africa coal combustion constitutes up to 90 % of the country’s energy need. This coal combustion activity is known to contribute to the amount of about 40 % of the total CO2 atmospheric emissions worldwide that ... -
Cell culture biomarkers for monitoring of wastewater pollutants
(University of the Western Cape, 2021)Wastewater is normally composed of a mixture of pollutants. The type and composition of pollutants in a particular wastewater depend on the source of origin. The source and characteristics of a particular wastewater determine ... -
Cesium hydrogen sulphate and cesium dihydrogen phosphate based solid composite electrolyte for fuel cell application
(University of the Western Cape, 2004)A new high temperature solid electrolyte composite was developed, with CsHSO4 and CsH2PO4 as the proton conducting material in composition with PTFE and SiO2 to enhance the solid electrolyte composites mechanical strength ... -
Chalcone and curcumin hybrids of indole propargylamines as multifunctional neuroprotective agents
(University of the Western Cape, 2020)Neurodegenerative disorders (NDs) are a range of chronic brain disorders that includes amongst others motor function loss. Parkinson’s disease (PD) is one of the common NDs that has an insidious onset and diagnosed when ... -
The challenge of implementing integrated water resources management (IWRM) in the Lower Okavango River Basin, Ngamiland district, Botswana
(University of the Western Cape, 2005)Water resources management practice has undergone changes in management approaches and principles over time. It was previously characterised by what scholars refer to as the hydraulic mission where ‘extreme engineering’ ... -
Challenges facing researchers conducting clinical trials in HIV prevention in South Africa: a focus on adherence
(University of the Western Cape, 2014)In clinical trials, adherence of the participants to the dosing instructions is a major challenge. Many researchers have identified medication adherence as a topic to further explore in order to obtain good, usable and ... -
Challenges of postgraduate students at the University of the Western Cape 2009 - 2013
(University of the Western Cape, 2019)In South Africa, postgraduate education is a catalyst in national development and poverty alleviation that is widely acknowledged by the state and higher education institutions, such as the University of the Western Cape ... -
Change Management in a Biopharmaceutical Company
(University of the Western Cape, 2020)This study aimed to review the change management implemented in a Biopharmaceutical company in Cape Town in the light of existing literature on change management theory. Three main constructs were identified: process of ...