Browsing Faculty of Natural Science by Title
Now showing items 2012-2031 of 2597
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Radiation-induced Leukaemia in South Africa: Response of lymphocytes and cd34+ cells to different radiation qualities
(University of the Western Cape, 2020)Epidemiological studies have highlighted that leukaemia can be considered as the most prominent malignancy after radiation exposure during childhood. The lifetime risk on radiation-induced leukaemia for a given dose is 3 ... -
Radiation-induced leukaemia in South Africa: response of lymphocytes and cd34+ cells to different radiation qualities.
(University of the Western Cape, 2020)Epidemiological studies have highlighted that leukaemia can be considered as the most prominent malignancy after radiation exposure during childhood. The lifetime risk on radiation-induced leukaemia for a given dose is 3 ... -
Radio-optical analysis of extended radio sources in the first look survey field
(2010)I combine 610 MHz Giant Metrewave Radio Telescope (GMRT) data, 1.4 GHz Very Large Array (VLA) data and 1.4 GHz Westerbork Synthesis Radio Telescope (WSRT) observations, encompassing a ∼ 4 square degree field (sq. deg. ... -
Radiometric characterisation of vineyard soils, Western Cape, South Africa
(University of the Western Cape, 2010)This study is aimed at investigating the feasibility of using the radiometric technique as an alternative to traditional methods for determining soil physico-chemical parameters which are important for terroir characterization. ... -
Radiometric investigation of soil and beach sand in Zanzibar
(University of the Western Cape, 2020)This study presents the results of radiometric investigation of soil and beach sand in Zanzibar. The activity concentration of natural radionuclides (40K, and 232Th and 238U decay products) in beach sand and soil samples ... -
Radiometric study of beach sand deposits along the coast of Western Cape province, South Africa
(2007)Natural radioactivity studies have been carried out to study the textural characteristics, heavy mineral composition, provenance, sediment transport, and depositional environment of beach placer deposits. The naturally ... -
Radiometric study of soil: the systematic effects
(University of the Western Cape, 2007)The natural 238U, 232Th and 40K radioactive content of vineyard soil was measured with an in-situ gamma-ray detector. The activity concentrations measured with the in-situ detector are normalized using the laboratory-determined ... -
Radioprotective effects of rooibos herbal tea on the developing central nervous system of wistar rats
(University of the Western Cape, 2018)Background: Early postnatal radiation exposure from environmental, diagnostic or therapeutic sources is potentially deleterious to the developing nervous system resulting in oxidative stress, structural damage, altered ... -
Radiosensitization effects of gold nanoparticles in proton therapy
(University of the Western Cape, 2017)Despite recent advances in radiotherapy, some tumours have shown to be resistant to treatment and patients still experience long term side effects. Gold nanoparticles (AuNPs) have been identified as effective radiosensitizers ... -
Radon escape from water
(University of the Western Cape, 2010)This thesis aims to measure the rate of radon loss from water in a systematic way. The dependence on surface area, temperature and concentration will be investigated. The experiments were done at UWC by creating radon using ... -
Radon exhalation of building materials
(University of the Western Cape, 2018)Public concern about all radiation and radon exhalation from building materials has been highlighted recently. The purpose of this study is to address this public concern and to investigate the contribution of building ... -
Radon exhalation studies for applications in low background environments.
(University of the Western Cape, 2022)Neutrinoless double beta decay (0 ) is a rare process that is yet to be observed. Observation of neutrinoless double beta decays would imply lepton number violation, and that the neutrino is its own antiparticle ... -
Radon exhalation studies for applications in low background environments.
(University of the Western Cape, 2023)Neutrinoless double beta decay (0νββ) is a rare process that is yet to be observed. Observation of neutrinoless double beta decays would imply lepton number violation, and that the neutrino is its own antiparticle (a Majorana ... -
Radon in the Cango Caves
(University of the Western Cape, 2005)Radon is a naturally occurring radioactive element in the 238U decay series that is found in high concentrations in certain geological formations such as Caves. Exposure to high concentrations of radon has been positively ... -
Rainfall induced transient pressure wave mechanisms and pore water pressure dynamics in tailings
(University of the Western Cape, 2023)Tailings Storage Facilities are some of the largest engineered structures responsible for the containment of mining waste, yet some physical/hydrological processes causing slope instability are still poorly understood. ... -
Rapid geomorphological change in an urban estuary: a case study of the Eerste River, Cape Town, South Africa.
(University of the Western Cape, 2002)The Eerste River estuary is one of eleven estuaries draining into False Bay. lt is an urban river system and has therefore been subjected to human interference, which has resulted in degradation. This study focuses on ... -
Rational drug therapy monitoring in type 2 diabetes mellitus : using glycated haemoglobin as a guide for change in therapy
(University of the Western Cape, 2015)Type 2 diabetes mellitus is a progressive disease characterised by defects in insulin secretion, insulin action or both. Proper management of diabetes with appropriate drug and lifestyle interventions, guided by proper ... -
Re-descriptions of some Southern african Scyphozoa: out with the old and in with the new
(University of the Western Cape, 2009)Two species of Chrysaora are described from the northern Benguela ecosystem: C. fulgida and C. africana. These species can be diagnosed by a combination of morphological features including lappet and tentacle number, shape ... -
Re-descriptions of some southern African Scyphozoa: out with the old and in with the new
(University of the Western Cape, 2009)Two species of Chrysaora are described from the northern Benguela ecosystem: C. fulgida and C. africana. These species can be diagnosed by a combination of morphological features including lappet and tentacle number, shape ... -
Re-use of South African fly ash for CO2 capture and brine remediation.
(University of the Western Cape, 2013)Coal combustion accounts for 95% of electricity generation in South Africa while globally coal combustion for energy generation stands at 42%. It has been predicted that coal utilization for energy generation will continue ...