Browsing Doctoral Degrees (Chemistry) by Title
Now showing items 81-100 of 149
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The photochemistry and photostabilization potential of plant extracts on sunscreen absorbers.
(2014)Abstract available in PDF file. -
Phytochemical analyses and biological activities of four South African ficus species (moraceae)
(2015)Abstract available in PDF file. -
Phytochemical and analytical studies on two indigenous medicinal plants found in KwaZulu-Natal : Carissa macrocarpa and Harpephyllum caffrum.
(2012)Vulnerable communities and rural households usually turn to natural resources for their nutritional and healthcare needs. However, very little is known about the nutritional and medicinal value of many plant species ... -
Phytochemical and elemental analysis of nettles found in KwaZulu-Natal, South Africa.
(2016)There is a rich diversity of indigenous edible plants in South Africa. Rural communities have for years, been collecting indigenous edible medicinal plants for food and for their medicinal properties. However, a combination ... -
Phytochemical investigation and tissue culture studies on the South African knob trees, Zanthoxylum Capense and Senegalia Nigrescens.
(2017)Abstract available in PDF file. -
A phytochemical investigation of members of the hyacinthaceae family and biological screening of homoisoflavanones and structurally related compounds.
(2004)The Hyacinthaceae family is richly represented in southern Africa. Of the five subfamilies, three are found in southern Africa. These are the Urgineoideae (URG), Ornithogaloideae (ORN) and the Hyacinthoideae (HYA). The ... -
Phytochemical, elemental and biological studies of three Ficus species (Moraceae) found in KwaZulu-Natal, South Africa.
(2017)Ficus (Moraceae), with over 800 species, is one of the understudied genera in modern pharmacognosy. Rural households depend on their fruits for food while other plant parts such as leaves and bark are utilised for medicinal ... -
Phytochemistry and bioactive natural products from Lannea alata, Lannea rivae, Lannea schimperi and Lannea schweinfurthii (anacardiaceae)
(2014)Abstract available in PDF file. -
The phytochemistry and biological activity of secondary metabolites from Kenyan Vernonia and Vepris species.
(2013-10-10)This work is an account of the phytochemical analysis of two genera, Vernonia and Vepris which are used as remedies for illness by the Kalenjin community of Kenya. Species of Vernonia are known to yield sesquiterpene ... -
Phytochemistry and quorum sensing inhibitory studies of four vernonia species growing in Nigeria.
(2017)Abstract available in PDF file. -
A powder diffraction study of problems in platinum group metal extraction.
(1994)The base metal and platinum group metal extractive processes for two South African refineries were examined using x-ray powder diffraction. Base metal refinery matte contained nickel sulphide (Ni3S2), copper sulphide ... -
Progress towards the stereoselective synthesis of cycleanine.
(2011)The emergence of multi-drug resistance (MDR) to antimalarial and anticancer drugs has stimulated a search for novel MDR inhibitors/reversers. Bisbenzylisoquinoline alkaloids (BBIQ) are potential agents for reversing MDR, ... -
Reactions and reactivity of allyl and related carbamates.
(1997)Carbamate chemistry has flourished since the 1980's which saw the introduction of the carbamoyl group by Hoppe and co-workers, prominent researchers in this area, as a suitable moiety for the activation and stabilisation ... -
The redox and co-ordination chemistry of some dinuclear diphosphazane- bridged derivatives of ruthenium.
(1991)Abstract available in pdf file. -
Rhodium-catalyzed and uncatalyzed synthesis of boronate esters and their subsequent utility in the Suzuki realm.
(2008)This study has shown that alkythioboranes 1,3,2-dithiaborolane and 1,3,2-dithiaborinane, disproportionated significantly during their synthesis. Their interaction with 1-octene has been investigated, and the rate constants, ... -
Ruthenium and silver complexes of potentially binucleating phosphoruspyridyl and phosphorusbipyridyl ligands.
(1994)Abstract available in pdf file. -
Scope of microporous and mesoporous molecular sieves in the oxidation of higher alkanes with ozone
(2008)Alkane-rich fractions including n-paraffins are the most important chemical feedstock used in the -
Security in quantum key distribution protocols.
(2015-02-24)Quantum theory forms one of the most studied theories of nature. It has inevitably led to a number of different research areas. One of the breakthroughs was the development of quantum cryptography which now forms one of ... -
Sedimentation and chemical processes on the Lower Mkuze floodplain : implications for wetland structure and function
(2008)The Mkuze Wetland System, situated in northern KwaZulu-Natal, is South Africa’s largest freshwater wetland area. The system plays a vital role in the functioning of the local landscape and has been identified as an important ...