Browsing Masters Degrees (Chemistry) by Title
Now showing items 135-154 of 287
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Maize (Zea mays L.) seed quality in response to simulated hail damage.
(2015)Maize (Zea mays L.) is the most important cereal grain crop produced in various environments throughout South Africa. Maize is vulnerable to hail damage because it can reduce crop yield or may result in complete yield and ... -
Metal complexes with phosphor-1, 1-dithiolato ligands : green synthesis, structures, antimicrobial studies and dye-sensitized solar cell application.
(2016)Abstract available in PDF file. -
Metal powder production by pyrolysis of metal oxalates and carbonyl clusters.
(2001)Chapter One serves as an introduction to, and background information, on the thermal decomposition of metal oxalates and homonucleus carbonyl clusters. Emphasis is placed on the compounds under investigation, namely the ... -
Metallic nanoparticle-graphene quantum dot nanocomposites for the electrochemical detection of methyl parathion.
(2017)This work reports on the detection of methyl parathion (MP) on electrodes constructed or decorated with graphene based nanomaterials. The sensing nanomaterials used include graphene quantum dots (GQDs), metal oxide [(MO): ... -
Method development and application for the determination of polycyclic aromatic hydrocarbons (PAHs) in KwaZulu-Natal, South Africa.
(2018)This work involved the analysis of PAHs under optimized conditions of gas chromatographymass spectrometry (GC-MS) method and after extracting by optimised ultrasonic extraction (USE) (for sediment samples) and solid phase ... -
Method development and application: solid phase extraction (SPE), ultrasonic extraction (UE) and soxhlet extraction (SE) for the analysis of pesticides in water, soil, sediment and sludge.
(2019)Ultrasonic extraction (UE), Soxhlet extraction (SE) and solid phase extraction (SPE) have been developed and applied for the simultaneous determination of the five most commonly used triazine pesticides. The extraction ... -
Method development and application: solid phase extraction (SPE), ultrasonic extraction (UE) and soxhlet extraction (SE) for the determination of antiretroviral drugs in river water, wastewater, sludge, soil and sediment.
(2022)Antiretroviral drugs (ARVs) are a group of pharmaceuticals that have been recognized to be present in the environment and most of them have been reported to be environmentally persistent. However, most studies have ... -
Methods development and application for triazine herbicides determination in fruits and vegetables: comparing the significance of solid phase extraction, QuEChERS extraction, and ultrasonic solvent extraction techniques.
(2021)This work reports on a quick, easy, cheap, effective, rugged, and safe (QuEChERS), solid phase extraction (SPE) and ultrasonic solvent extraction (USE), combined with liquid chromatography-photodiode array detection ... -
Methoxycarbonylation of higher olefins catalysed by (pyrazolyl-ethyl)-pyridine palladium(II) complexes.
(2018)Methoxycarbonylation belongs to the family of carbonylation reactions that are efficiently catalysed by homogeneous palladium catalysts to give ester products. To date, achieving cost effect, stable and selective catalysts ... -
Molecular and characterization studies of New Delhi metallo-β-lactamase.
(2019)ABSTRACT The increasing rate of antibiotic resistance within human pathogens has caused global concern. Bacterial strains have employed several strategies to resist β-lactam antibiotics, the most prevalent being the ... -
Molluscicides and other compounds from indigenous plants.
(1996)The use of plants with molluscicidal properties IS a simple, inexpensive and appropriate technology for focal control of the snail vector. Isolation and identification of the active constituents is essential for the study ... -
N-butane activation over ruthenium and iron promoted VPO catalysts.
(2009)The Fe- and Ru-promoted vanadium phosphorus oxide (VPO) catalysts were synthesized via the organic route in iso-butanol to form the VPO precursor, VOHPO4·0.5H2O. The resulting precursor was then activated in a stream of ... -
New dithiophosphonate complexes of nickel, cadmium, mercury and lead.
(2013)This study was primarily focused on the synthesis and structural X-ray crystallographic analyses of new complexes. The work undertaken investigated the reactivity of the diphosphetane disulfide dimer, [P(4-C6H4OEt)S(S)]2, ... -
Non-equilibrium quantum dynamics of condensed matter models.
(2013)In this dissertation, we studied the generation of squeezed states induced by a timedependent interaction and the in uence of temperature on the strength of the squeezing in a condensed matter model. The model studied ... -
Novel ruthenium (ll/lll) complexes with multidentate Schiff base chelates containing biologically relevant moieties.
(2014)The discovery of novel ruthenium metallopharmaceuticals is highly dependent on its coordination chemistry. As emphasized in Chapter 1, the biodistribution pathway of a potential ruthenium metallopharmaceutical depends ... -
The oxidation of n-octane by iridium and cobalt PNP complexes.
(2011)Paraffin activation has practical implications in the replacement of current petrochemical feedstocks (olefins), by utilizing economical and easily accessible alkanes, which may result in more efficient strategies for ... -
Oxidation of primary alcohols to aldehydes and esters.
(1998)The initial aim of this research project was to oxidise Cr C4 alcohols to their respective aldehydes. However, isolation of these aldehydes was impossible due to their low boiling points. Another problem was the proximity ... -
The oxidative activation of n-octane over titania supported cobalt catalysts.
(2013)This research effort explored routes to valorise alkanes via heterogeneous catalysis. Dehydrogenation and oxidative dehydrogenation are the two routes that were probed in this research effort to activate n-octane by means ...