Browsing School of Chemistry and Physics by Title
Now showing items 42-61 of 700
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Artificial neural networks for the classification of Meliaceae extractives.
(1998)The goal of this project was the development of a computer-based system using artificial intelligence to classify the limonoids, protolimonoids and triterpenoids isolated from the family Meliaceae by the Natural Products ... -
An assessment of heavy metal and pesticide pollution at a commercial airport.
(2004)An assessment of heavy metal and pesticide pollution was conducted at a commercial airport in Pietermaritzburg, which is the base for a local crop spraying operation, as well as a small-scale aircraft maintenance centre. ... -
Assessment of the efficiency of solar radiation concentrating system.
(2009)A Solar Radiation Concentrating System for generation of high temperature heat for a solar oven was developed and evaluated at the University of KwaZulu-Natal, Westville Campus, Durban - South Africa. The system concentrates ... -
An assessment of the photostability of South African commercial sunscreens.
(2001)Abstract available in PDF file. -
An assessment of the Pietermaritzburg Waste Minimisation Club and the waste minimisation opportunities on a coil coating plant.
(2002)This study involved an assessment of the Pietermaritzburg Waste Minimisation Club (PWMC) during 2001, and a waste minimisation audit conducted at two coil coating lines. Waste minimisation is the reduction or elimination ... -
The association between VLF and ELF chorus emissions and electron precipitation.
(2009)This is an investigation into the association between ionospheric absorption caused by electron precipitation and ELF:3 Hz-3 kHz and VLF:3 kHz-30 kHz, chorus. Ionospheric absorption was measured using the chain of riometers ... -
Asymmetric synthesis with an ephedrine based chiral auxilliary.
(1992)Abstract available in pdf file. -
Aurora and associated VLF phenomena.
(1978)Observations have been made at Sanae (gm. lat. -63,71°) on occurring auroral forms, (diffuse and pulsating aurora), and simultaneous occurring VLF phenomena, (whistlers and auroral hiss) . Two studies ... -
Avoidance of trappings in continual collapse of spherical stars.
(2019)In this dissertation we study the physical process of a spherically symmetric perfect uid experiencing a continuous gravitational collapse in concurrence with continuous radiating energy in an outward spacetime. Trapped ... -
Base-Free Suzuki acylation reactions of sodium (aryl trihydroxyborate) salts: a novel synthesis of substituted aryl ketones.
(2018)Asymmetric biaryl ketones are important building block in organic chemistry since they occur in large number of biological active compounds, natural product, cosmetics as well as in organic synthesis. The aim of this project ... -
Baseline demand responsiveness framework for the conventional grid through appliance scheduling by evolutionary metaheuristics.
(2020)A major problem of many energy environments nowadays, is an obsolete and highly inefficient electricity supply system, the Conventional Grid (CG), characterized by a high peak to average ratio, out of an uncontrollable ... -
Beam generated instabilities in space plasma.
(1999)Electrostatic instabilities associated with a model applicable to the auroral acceleration region consisting of an ion beam, precipitating electrons and stationary background electrons are theoretically investigated. The ... -
Binary and ternary molecules blend bulk heterojunction organic solar cell.
(2015)Bulk heterojunction organic solar cells were prepared and characterized in terms of electrical and optical properties of the photosensitive medium. Two cases of organic solar cells were developed in this investigation ... -
Bioactive sesquiterpenoids from dicoma anomala subsp. gerrardii
(2008)Through South Africa’s first collaborative project between a large scientific organisation, the Council for Scientific and Indust rial Research (CSIR), and the Traditional Healer’s Committee, Dicoma anomala was identified ... -
Biochemical-physical mechanisms of light-tissue interactions.
(2021)Optical tissue phantom samples simulating the optical properties of the human prostates and brain tissues were fabricated. The experimental set-up was designed to be cost-effective but reliable, allowing for convenience ... -
Bis (pyrazolyl) pyridine Cu (II) and Zn (II)complexes : syntheses, molecular structures and polymerization reactions of ε-Caprolactone and lactides.
(2015)Reactions of 2,6-bis((3,5-dimethyl-1H-pyrazol-1-ylmethyl)pyridine (L1) and 2,6-bis(3,5-dimethyl-N-pyrazolyl)pyridine (L2) ligands with Zn(II) and Cu(II), acetates and carboxylates (benzoates, 2-chlorobenzoate, & 2-bromobenzoate) ... -
Boron- and nitrogen-doped carbon nanotubes : synthesis, characterization and application in solar cells.
(2015)Abstract available in PDF file. -
The Brix-Free water capacity and sorption behaviour of fibre components of sugar cane (Saccharum officinarum).
(2008)Milling data from sugar factories in Mauritius were examined from 1960 to 2004 to assess the trend in the quality of cane received at mills and the change in factory performance. A deterioration in overall quality was ... -
Bulk heterojunction organic solar cell.
(2014)The low material costs and the ease fabrication procedures of organic solar cells has earned them too much interest from scientists all over the world. Much of the e orts were given to the improvement of the power ... -
Bulk heterojunction organic solar cells and thin film electrode buffer layers : synthesis, preparation and characterization.
(2016)Abstract available in PDF file.