Browsing Masters Degrees (Chemistry) by Title
Now showing items 70-89 of 255
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Elemental distribution in selected edible trifolium species (clover) and the impact of soil quality on the chemical characteristics of trifolium dubium
(2017)Trifolium (clover) species are edible herbs that are rich in proteins, phytocompounds and essential macro and micro-nutrients. These herbaceous plants can therefore contribute significantly to the nutritional needs of ... -
Enantioselective synthesis of 1-substituted tetrahydroisoquinolines.
(2014)Many organic compounds are chiral and they are useful because of the biological activities associated with them. The biological activities of chiral compounds are often linked to absolute configuration, i.e. a compound ... -
Enzymatic activation of a peptide functionalised gold nanoparticle system for prodrug delivery.
Traditional chemotherapeutic drugs are often restricted by severe side effects and a lack of specificity. An approach aimed at improving the selectivity of cancer drugs includes the use of prodrugs that can be selectively ... -
Ethyl N-bromo-alkylcarbamates as heterocyclic precursors and extractives from Oceanapia sp.
(2001)The synthesis of p-lactams has been of foremost importance since the discovery of penicillin by Sir Alexander Fleming, in 1928, and its susequent structure elucidation in 1945. Ethyl N-2-bromo-alkylcarbamates show considerable ... -
Extractives from eucomis montana and agapanthus inapertus.
(2003)Two species belonging to different families were investigated, Eucomis montana from the Hyacinthaceae and Agapanthus inapertus from the Agapanthaceae. To date no previous chemical investigation on Eucomis montana has ... -
Extractives from marine organisms.
(2000)The study involves the investigation of the chemical composition of some marine organisms. This entails collecting the organism, extracting compounds from it and separation, characterization and identification of these ... -
Extractives from Neobeguea mahafalensis and Cedrelopsis grevei.
(1997)Neobeguea mahafalensis Leroy. and Cedrelopsis grevei Baill. are the two Madagascan species which were investigated in this work. Neobeguea mahafalensis Leroy. belongs to the Neobeguea genus of the Meliaceae family and is ... -
Extractives from the amaryllidacea and the fabaceae.
(1999)This work is an account of investigations into the chemistry of one of the members of the Amaryllidacae family, Ammocharis coranica, and one of the members of the Fabaceae family, Sophora velutina. Chapter one is an account ... -
Extractives from the Amaryllidaceae : Brunsvigia radulosa and Cyrtanthus breviflorus.
(2001)No abstract available. -
Extractives from the Hyacinthaceae.
(2000)Four species belonging to the Hyacinthaceae family were investigated. The taxonomy of the Hyacinthaceae is currently under review and therefore compounds isolated from these plants could provide valuable chemical evidence ... -
Extractives from the Meliaceae and Icacinaceae.
(1990)The wood, leaf and seed extracts of Apodytes dimidiata, Turraea floribunda and Turraea obtusifolia were examined. Two new limonoids belonging to the Toonafolin group were isolated from the seeds, two known havanensin-type ... -
Extractives from the Meliaceae and Ptaeroxylaceae.
(2001)This work is an account of the extractives from one member of the Meliaceae and one member of the Ptaeroxylaceae. In all, thirteen compounds have been isolated, of which four have not been described previously. Neobeguea ... -
Extractives of three southern African medicinal plants.
(1998)In this investigation the chemistry of three southern African plants used for medicinal purposes was investigated. The plants were Dioscorea dregeana, Avonia rhodesica and Equisetum ramossisimum. Extracts of all three ... -
Formulation of the anisotropic coarsening theory and applications to the liquid-phase sintering of Si3N4.
(2002)We have developed a new coarsening theory that more completely describes grain growth of a system of anisotropic particles such as completely faceted crystals by Ostwald ripening. Our model takes the anisotropy of surface ... -
The functionalisation of thenyl carbamates.
(1996)The carbamate functionality has always been associated with a major class of biocides because of its ability to function as an inhibitor of the enzyme acetylcholinetransferase. However, carbamates are not limited to ... -
A green, solvent-free one-pot synthesis of disubstituted quinolines via A3-coupling using 1 mol% FeCl3.
(2016)Quinoline derivatives are important compounds due to their broad range of applications in medicinal, synthetic and industrial chemistry. However, current synthetic techniques such as the classical Skraup, Döebner-Miller, ... -
Growth and physical-chemical properties of carbon nanotube arrays for energy conversion devices.
(2015)Energy demand has been on the increase globally whilst there has been continuous depletion of energy sources. This has prompted investigative research towards sustainable energy through the synthesis of carbon nanotubes ... -
Heterogenisation of selective ethylene tetramerisation catalysts.
(2010)The aim of the study was to heterogenise existing tetramerisation catalysts by supporting the bis(diphenylphosphino)amine ligands on polymer. The polymer of choice was Merrifield’s resin which was functionalized to enable ... -
Homogeneous dioxoruthenium(VI) catalysts for the oxidation of alcohols.
(2000)Compounds of the form RuO2(Y-py)2CI2 1 (py = pyridine, Y = H, 4-t-Bu, 3-CN, 4-CN, 2-Br, 3-Br, 4-Br, 4-Cl, 4-Me, 4-C(O)C6H5, 3-COOH, 4-COOH), RuO2ZCI2 2(Z = bipyridine, phenanthroline) and RuO2(OH)2(Y-py)2 3 (py = pyridine, ...