Browsing School of Chemistry and Physics by Title
Now showing items 344-363 of 700
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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 ... -
Microcontroller based data acquisition and control of a solar thermal energy system.
(2009)A solar thermal energy system is being rebuilt at University of KwaZulu-Natal School of Physics. A similar system is also being built in the University Eduardo Mondlane – Maputo Mozambique, in a team development work. ... -
Modeling of fabricated NiO/TiO2 P-N heterojunction solar cells.
(Research India Publications., 2018)This paper reports modelling and theoretical validation of a fabricated NiO/TiO2 P-N heterojunction solar cell. The solar cell equations were modelled and thereafter theoretical validation of the fabricated solar cells was ... -
Modelling diode-pumped solid-state lasers.
(2008)This thesis consists of three main parts. An introduction to diode-pumped solid-state lasers, thermal modelling of solid-state lasers and rate-equation modelling of solid-state lasers. The first part explains the basic ... -
Modelling of the ballooning instability in the near-earth magnetotail.
(1995)In recent years, many alternative models of the substorm process have been proposed to explain different aspects of this magnetospheric phenomenon. Some features in these competing models are compatible while others, such ... -
Modelling of VLF radio propagation in the earth-ionosphere waveguide.
(2012)Abstract available in PDF file. -
Modelling the interaction between human immunodeficiency virus, mycobacterium tuberculosis and the human immune system, including the effects of drug therapy.
(2007)Tuberculosis (TB) is the leading cause of death in individuals infected with human immunodeficiency virus (HIV) in several African countries, including South Africa. HIV-positive individuals do not have the immune system ... -
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 ... -
Monitoring the states of single quantum systems.
(2012)Continuous weak measurement provide a convenient way to gather information about a quantum system without the need to prepare huge ensembles of identical systems as required by standard quantum measurement theory. Even ... -
Monte Carlo simulations in open quantum systems.
(2007)The motivation for this Masters thesis is to develop numerical algorithms to study the dynamical evolution of non-Markovian open quantum systems. Such systems are of importance if one is interested in modeling solid state ... -
The morphology of radiation damage in copper irradiated with neutrons at elevated temperatures.
(1977)This thesis is an investigation of the radiation damage morphology of high purity copper crystals irradiated with fast neutrons at temperatures in the range of 250C to 4OO C. At these high temperatures neutron damage ... -
Mossbauer spectroscopy and x-ray diffraction study of (Cd, Zn) substituted mixed ferrites.
(2002)The study of magnetic properties and structures of Zn and Cd substituted mixed ferrites has been carried out using Mossbauer spectroscopy and X-ray diffraction on powdered samples at about 300 K. Two series of mixed ... -
Mössbauer study of the hyperfine magnetic field and electric field gradient at Fe sites in synthetic diamond.
(1992)Mossbauer Spectroscopy has been used to investigate the site of Fe inclusions in a suite of synthetic diamonds (de Beers MDAS). Information on the hyperfine magnetic fields and electric field gradients at Fe sites in ... -
Multi-wavelength study of radio sources in the universe.
(2009)This thesis presents a detailed multi-wavelength study of radio sources. A major part of the thesis focuses on radio sources in the FIRST survey while the latter part of the thesis studies low redshift radio galaxies in ...