Browsing Faculty of Natural Science by Title
Now showing items 1486-1505 of 2560
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Lichen thermal sensitivities, moisture interception and elemental accumulation in an arid South African ecosystem
(University of the Western Cape, 2010)Elevated temperatures accompanying climate warming are expected to have adverse effects on sensitive lichen species. This premise was examined by measuring the sensitivity of different lichen species to elevated temperatures ... -
Lifetime measurements of excited nuclei through modern nuclear spectroscopy
(University of Western Cape, 2021)The progressive development of scintillator detectors has made it possible to perform direct electronic lifetime determination up to a few hundred nanoseconds. The 2" by 2" LaBr3:Ce detectors provide a combination of ... -
Lifetime measurements of excited nuclei through modern nuclear spectroscopy
(2021)The progressive development of scintillator detectors has made it possible to perform direct electronic lifetime determination up to a few hundred nanoseconds. The 2” by 2” LaBr3:Ce detectors provide a combination of ... -
Linear polarization and lifetime measurement in ¹⁹⁴TL
(University of the Western Cape, 2006)High-spin states in¹⁹⁴TL were populated using the 181Ta1t8O, 5n) reaction at the beam energies of 91 and 93 MeV during two weekends of beam time. The 1^Tcoincidence data associated with this reaction were measured employing ... -
Linking biology and sustainable livelihoods to the proposed establishment of community -based Eucheumoid farming in southern Kenya
(University of the Western Cape, 2005)Growth rates of three commercial eucheumoids: brown Eucheuma denticulatum and green and brown Kappaphycus alvarezii were studied at three sites (Gazi Bay, Kibuyuni and Mkwiro) in southern Kenya. The study was conducted ... -
Liposomal drug delivery to brain cancer cells
(University of the Western Cape, 2015)Neuroblastomas (NBs) are the most common solid extra-cranial tumours diagnosed in childhood and characterized by a high risk of tumour relapse. Like in other tumour types, there are major concerns about the specificity and ... -
Liquid-liquid interface ion-transfer amperometric sensors for tenofovir as a model nucleoside/nucleotide anti-retroviral drug
(University of the Western Cape, 2014)Amperometric sensors for Tenofovir, a model nucleotide/ nucleoside reverse transcriptase inhibitor ARV drug, were studied based on the principle of ion-transfer electrochemistry at the membrane-stabilized oil/ water interface ... -
Listeria in food and water in the Western Cape
(University of the Western Cape, 1998)Listeria are glam positive non-spong rods that were found in diverse environments including water, seafood, dairy products and vegetables. Outbreaks of listeriosis due to the consumption of foods contaminated L.monocytogenes, ... -
A literature review on pharmacovigilance systems in off-label use of medicines
(University of the Western Cape, 2015)Problem and significance: Off-label use of medicines is not illegal; however, it can be risky and harmful, or beneficial and innovative. The main problem of this practice is the lack of systems for monitoring adverse drug ... -
Lithium manganese oxide modified with copper-gold nanocomposite cladding- a potential novel cathode material for spinel type lithium-ion batteries
(University of the Western Cape, 2014)Spinel lithium manganese oxide (LiMn2O4), for its low cost, easy preparation and nontoxicity, is regarded as a promising cathode material for lithium-ion batteries. However, a key problem prohibiting it from large scale ... -
The lithogeochemical characterization of the Hondekloof nickel mineralization, Kliprand area, Garies Terrane, Namaqualand, South Africa
(University of the Western Cape, 2015)A magmatic Ni-Cu (±Co-Zn) sulphide deposit, named the Hondekloof prospect, is present in the Kliprand area at the border between the Northern Cape and Western Cape Provinces of South Africa. The deposit occurs in the central ... -
lnvestigations into the cancer modulating properties of Aspalathus linearis (Rooibos), Cyclopia intermedia (Honeybush) and Sutherlandia frutescens (Cancer bush) in oesophagea! carci nogenesis
(University of the Western Cape, 2007)This thesis contains scientific evidence on the anticancer properties of two unique South African herbal teas, rooibos and honeybush, and the herbal plant Sutherlandia frutescens (cancer bush) using an in vivo oesophageal ... -
Location-based estimation of the autoregressive coefficient in ARX(1) models
(University of the Western Cape, 2006)In recent years, two estimators have been proposed to correct the bias exhibited by the leastsquares (LS) estimator of the lagged dependent variable (LDV) coefficient in dynamic regression models when the sample is finite. ... -
Long short-term memory recurrent neural networks for signature verification
(UWC, 2003)Handwritten signature verification is defined as the classification process that strives to learn the manner in which an individual makes use of the muscular memory of their hands, fingers, and wrist to reproduce a signature. ... -
Long-range transport clusters, fine particulate matter (PM2.5) and soot concentrations of air masses in Cape Town, South Africa
(University of the Western Cape, 2018)Ambient air pollution is the biggest environmental threat to human health. According to the World Health Organisation (WHO), ambient air pollution kills millions of people worldwide every year. Airborne particulate matter ... -
Long-term vegetation monitoring – a 33 year record from table mountain
(2013)Nearly 40 years ago McLachlan and Moll highlighted the need for a well-defined path system on the Western Table of Table Mountain in the immediate vicinity of the Upper Cable Station (UCS). At that time the numbers of ... -
Low detection of exon skipping in mouse genes orthologous to human genes on chromosome 22
(University of the Western Cape, 2002)Alternative RNA splicing is one of the leading mechanisms contributing towards transcript and protein diversity. Several alternative splicing surveys have confirmed the frequent occurrence of exon skipping in human genes. ... -
Low temperature growth of Amorphous Silicon thin film
(University of the Western Cape, 2007)The growth of amorphous hydrogenated silicon (a-Si:H) thin films deposided by hot wire chemical vapor deposition (HWCVD) has been studied. The films have been characterised for optical and structural properties by means ... -
Low temperature tungsten trioxide nano/micro-systems for applications in gas sensing and electrochromism
(2013)In this work we primarily set out to investigate the technique of Aqueous Chemical Growth as a means of producing WO3 thin films that find applications in gas sensing and electrochromism. For the first time we demonstrated ... -
Luminous red galaxies in simulations
(2010)There have been a number of attempts to measure the expansion rate of the Universe using age-dating of Luminous Red Galaxies (LRGs).Assuming stars in LRGs form at the same time, age-dating of two populations of LRGs at ...