Browsing Masters Degrees (Chemistry) by Title
Now showing items 193-212 of 287
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Safety assessment of skin-lightening formulations commonly available in the Nigerian market.
(2016)Abstract available in PDF file. -
Screening of water pollutants using metallophthalocyanine-based chemically modified electrodes.
(2021)Abstract available in PDF. -
Seasonal analysis of water and sediment along the Umgeni River, South Africa.
(2014)Increased pollution caused by industrialization, urbanization, afforestation and agriculture has resulted in severe reductions to the health of rivers in South Africa. Numerous studies carried out on South African rivers ... -
Seasonal and spatial distribution of heavy metals in surface water and sediments of Msunduzi river, KwaZulu-Natal, South Africa.
(2017)Some physicochemical parameters and heavy metal concentrations of surface water as well as sediments in the Msunduzi River were investigated to provide information on the spatial and seasonal characteristic patterns of ... -
Seed bank distribution and viability of selected Vachellia and Acacia species in KwaZulu-Natal, South Africa.
(2015)There is increasing concern regarding the impact of invasive alien plants (IAPs), where their spread is a serious threat to both the structure and functionality of ecosystems, which causes the loss of biodiversity. ... -
The selective hydrogenation of octanal in the presence of octene using y-alumina supported copper-silver bimetallic catalysts.
(2014)This work pertains to the selective hydrogenation of octanal in the presence of octene, which has applications in the hydroformylation process. The octanal should be hydrogenated to the desired product, octanol, while ... -
The selective oxidation of n-butane to maleic anhydride.
(2003)Industrial catalysts used in commercial processes for the production of maleic anhydride are mainly Vanadium Phosphorous Oxide (VPO) catalysts. The VPO catalyst used is Vanadyl Pyrophosphate (VO)2P207 made from its precursor ... -
South African plants as a source of herbicides : identification of a compound with phytotoxic activity from artemisia afra jacq. ex willd.
(2017)Abstract available in PDF file. -
Soya protein isolate production by various methods.
(1995)The concentrated protein fractions of soyabeans, known as soya protein isolate, was produced by three different methods from the same raw material namely defatted soya flakes. Extraction of the soluble fraction of the ... -
Structural and kinetic studies of the ring opening polymerization of lactides and ε-caprolactone by (Benzimidazolylmethyl)amine ZN(II) and Cu(II) complexes.
(2014)The syntheses and structural characterization of Zn(II) and Cu(II) carboxylate complexes supported on benzimidazolyl amine ligands and their application in the ring opening polymerization of lactides and ɛ-caprolactone are ... -
Structural and Physical Studies of Co(III) Salen Derivatives.
(2007)A number of ligands that belong to the salen-type family were synthesized in this thesis. These ligands were synthesized from salicylaldehyde and 1,2-phenylenediamine, 1,3- diamino-2-hydroxypropane, 1,2-diamino-ethane, ... -
Structural, physical and biological studies of transition metal Schiff base complexes.
(2013)The aims of this work were first to synthesize and fully characterize compounds that may function as bleomycin analogues and, second, to test their anticancer activity in vitro. Three novel tetradentate O,N,N,O Schiff ... -
The structure and synthesis of metabolites from virgilia oroboides and chlorophora excelsa (Iroko)
(1989)In the present study the acetone extract of the heartwood of two trees, Virgilia oroboides and Chlorophora excelsa, were investigated. The heartwood of Virgilia oroboides afforded a variety of known flavonoids, as well as ... -
Structure and synthesis of Phloroglucinol derivatives from Hypericum roeperianum
(2010)The research presented in this study combines natural product chemistry with organic -
Structure-activity relationship studies of anti-diabetic dioxidovanadium(V) benzimidazole complexes.
(2022)Organovanadium compounds have been widely investigated for the potential use in Diabetes Mellitus. However, most of these metal complexes has failed during studies using in vivo Streptozotocin (STZ)-diabetic rat models and ... -
Studies on ozone initiated inactivation of pathogenic bacteria in aqueous systems
(2008)The effect of ozone on the inactivation of two Gram-negative strains (Escherichia coli and Pseudomonas aeruginosa) and one Gram-positive endospore (Bacillus subtilis) bacteria, often present in water and the cause of ... -
Studies on the nutritional value of the oils and mesocarp of avocado (Persea americana) and impact of soil quality on elemental composition.
(2011)This study covered both the Hass and Fuerte varieties of avocado pears. The quality of extracted avocado oil produced by different extraction techniques was assessed to determine the effect the extraction method had on ... -
Studies towards the synthesis of perhydropyrrolo[2,1-j]quinoline and perhydropyrido[2,1-j]quinoline ascidian alkaloids.
(2002)Cylindricines A-K [1-11], lepadifonnine [12] and fasicularin [13] are tricyclic ascidian alkaloids exhibiting the perhydropyrrolo[2,1 :j]quinoline and perhydropyrido[2,1-j]quinoline ring systems. The structural features ... -
A study of the isomerisation of aconitic acid with reference to sugarcane processing.
(2000)Chromatographic methods were used to determine the absolute values of cis-aconitic acid and trans-aconitic acid present in sugar cane factory processing streams and to determine the rates of isomerisation from the ...