Browsing Faculty of Natural Science by Title
Now showing items 644-663 of 2562
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A digital identity management system
(UWC, 2007)The recent years have seen an increase in the number of users accessing online services using communication devices such as computers, mobile phones and cards based credentials such as credit cards. This has prompted most ... -
A Digital Identity Management System
(University of the Western Cape, 2007)The recent years have seen an increase in the number of users accessing online services using communication devices such as computers, mobile phones and cards based credentials such as credit cards. This has prompted most ... -
A digital platform for Social innovation Through digital Storytelling
(2021)Technology plays a big role in our lives. However, many do not have access to technology and the knowledge it provides, giving rise to the so-called digital divide. The purpose of this study is to explore and understand ... -
Digital watermarking methods for data security and authentication
(2008)Cryptology is the study of systems that typically originate from a consideration of the ideal circumstances under which secure information exchange is to take place. It involves the study of cryptographic and other processes ... -
Digital watermarking methods for data security and authentication
(University of the Western Cape, 2008)Throughout history people have tried to develop methods to secure the exchange of information. Due to the influence of the information technology revolution, protecting data of different types has become as essential ... -
Directional correlation from oriented states and linear poralization measurements of Gamma Rays from 190T1
(University of the Western Cape, 2008)High-spin states in the oblate deformed odd-odd thallium nucleus ( ) 109 190 81 Tl have been investigated through the reaction 175Lu(20Ne, 5n)190Tl at a beam energy of 115 MeV. The gamma rays emitted from 190Tl nucleus ... -
Discovering cancer subtypes by tracking cancer progression with transcriptomic data through the multi-stage process of cancer development.
(University of the Western Cape, 2023)Background: The development of cancer is driven by genomic alterations, which become more heterogeneous as the disease progresses throughout the stages. Consequently, cancer patients have differential levels of sensitivity ... -
Discovery of anti-mycobacterial natural products from South African marine algae
(University of the Western Cape, 2019)Tuberculosis is a communicable disease which affects millions of people around the world. Although the case reports are declining, the eradication rate of this disease is far too slow. Natural products have played a key ... -
Discovery of antibacterial lead compounds from marine organisms
(University of the Western Cape, 2020)Marine organisms including algae and bacteria are known to produce chemically diverse secondary metabolites for survival purposes in the marine environment. Scientists have identified some of these natural products as ... -
Discovery of biomolecules from South African marine sponge symbionts through Metagenomic studies
(University of the Western Cape, 2018)Marine sponges are known to harbour diverse microorganisms which have been proposed to be involved in the synthesis of most of the natural compounds derived from sponges. However, only about 1% of these microorganisms can ... -
Discovery of cytotoxic natural products from South African marine sponges
(University of the Western Cape, 2018)Cancer is a major health problem worldwide and killing millions of people each year. The use of natural products as chemotherapeutic agents is well established, however, many of the currently available drugs are associated ... -
Discovery of heat shock protein90 inhibitors using structured-based virtual screening
(University of the Western Cape, 2023)Alzheimer's disease (AD) is the most common irreversible dementia, caused by accumulation of protein aggregates in the central nervous system, with symptoms that include memory loss and behavioural abnormalities. Cholinesterase ... -
Discrete and continuous time methods of optimization in pension fund management
(2010)Pensions are essentially the only source of income for many retired workers. It is thus critical that the pension fund manager chooses the right type of plan for his/her workers.Every pension scheme follows its own set of ... -
Discrete time methods of pricing Asian options
(University of Western Cape, 2014)This dissertation studies the computation methods of pricing of Asian options. Asian options are options in which the underlying variable is the average price over a period of time. Because of this, Asian options have a ... -
Discriminative eradication of cancer cells using quantum dots functionalised with peptide-directed delivery of a pro-apoptotic peptide
(2013)The therapeutic goal of cancer treatment is to trigger selective cell death in cancer cells. To eliminate cancerous cells effectively, the anti–cancer drugs must be targeted to the affected cells. However, anti–cancer drugs ... -
Disentangling star formation and AGN activity in the GAMA (G23) region
(University of the Western Cape, 2021)Observations of galaxies at di↵erent wavelengths have shaped our understanding of their formation and evolution through time. The commonly derived parameters, such as stellar mass and star formation rate (SFR), rely on ... -
Disposal of unused medicines from households in Cape Town
(University of Western Cape, 2019)Evidence indicates that most South African households do not dispose of unused medicines in the manner prescribed by the medicine’s regulatory authority. This trend is not unique to South Africa, but several developing ... -
Disposal Practices for Unwanted Medicines from Households in Johannesburg
(University of the Western Cape, 2017)A mixed research method was used where quantitative research facilitated qualitative research. Three questionnaires were drafted and distributed by email to respondents in the Johannesburg area. One questionnaire was for ... -
Dissolution and antiviral activity of a novel nevirapine formulation
(University of the Western Cape, 2014)The author’s objective was to follow the product life-cycle process of a novel antiretroviral, nevirapine formulation in South Africa, to generate and compile data to pursue market registration. Five supramolecular ... -
The distribution of the desert rain frog ( Breviceps macrops) in South Africa
(University of the Western Cape, 2009)The desert rain frog (Breviceps macrops) is an arid adapted anuran found on the west coast of southern Africa occurring within the Sandveld of the Succulent Karoo Biome. It is associated with white aeolian sand deposits, ...