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Browsing Theses and Dissertations (Chemistry) by Type "Thesis"
Now showing items 1-20 of 101
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(University of Pretoria, 2023)Global plastic and food waste generation has climbed to unprecedented levels, inherently linked to exponential population growth since the 1950s accompanied by industrialization, urbanization and modernization. The reduction ...
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(University of Pretoria, 2021)Spectroscopes are practical tools that show the quantization of emitted light from excited elements and compounds, as well as helping students understand modern models of the atom and appreciate the unique identifying power ...
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(University of Pretoria, 2021)In this project, a comprehensive review of existing and emerging technologies for the mitigation of PAH pollution in water was conducted. Furthermore, the status of antiretroviral drugs in African surface water, toxicological ...
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(University of Pretoria, 2006-05-18)Fluoride ion is an accompanying impurity in a wide variety of chemical gypsum throughout the world. In this study, the Ion Selective Electrode (ISE) method, the Ion Chromatography (IC) method and the standard Willard and ...
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(University of Pretoria, 2023)Given that South Africa is home to around 10% of all flowering plant species known to humans, the country is blessed with an abundance of natural resources. About 24,000 plant species have yet to be fully uncovered for the ...
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(University of Pretoria, 2005-09-30)Ultramarine pigments are aluminosilicate-based and contain sulphur-based chromophores. Several samples from two batches of fine fly ash, a predominantly aluminosilicate waste product of coal combustion, were used successfully ...
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(University of Pretoria, 2007-03-03)Please read the abstract in the section 00front of this document
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(University of Pretoria, 2007-06-05)Please read the abstract in the section 00front of this document
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(University of Pretoria, 2022)Two non-daphnane diterpenoids were isolated as biomarkers and later identified using one and two dimensional nuclear magnetic resonance (1D and 2D NMR) as lasioerin and lasiocephalin. The preparative purification of the ...
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(University of Pretoria, 2024-02-20)During the latter half of the previous century, new mycotoxins were discovered as secondary metabolites of fungi in major grains before harvest. The prevalence of these toxic compounds and the negative health effects caused ...
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(University of Pretoria, 2018)Hybrid fly ash cement is a binder with a composition between that of pozzolanic fly ash cement and alkali activated fly ash cement. Its production requires less cement clinker than ordinary Portland cement, facilitating a ...
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(University of Pretoria, 2018)Degradation of elastin and collagen in the extracellular matrix by elastase and collagenase accelerates skin aging. Phytochemicals that inhibit these enzymes can be developed as anti-aging ingredients. The anti-aging ...
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(University of Pretoria, 2021)The World Health Organisation (WHO) estimated that 216 million cases of malaria occurred worldwide in 2016 with most of the cases diagnosed in the African Region (90%) (WHO, World Malaria Report, 2017). Odour mosquito lures ...
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(University of Pretoria, 2022)Indigenous medicine is a common form of healthcare in the rural parts of Africa, South Africa not excluded. Traditional healers have ethnomedicinal reports documented or passed from one generation to another by word of ...
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(University of Pretoria, 2019)This work gives a thorough insight into the objectivity of adapting the sequential injection analysis (SIA) technique as a tool for chemical speciation. The use of ultraviolet visible spectrophotometry as a single detector ...
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(University of Pretoria, 2021)Malaria continues to be a major infectious disease with 229 million cases reported in 2019 of which 94% occurred in the African region. Problems such as poor aqueous solubility, instability, toxicity and drug resistance ...
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(University of Pretoria, 2020)Alzheimer’s disease (AD) is the most common neurodegenerative disease which is a significant socio-economic problem. The number of patients affected by the disease is increasing at an alarming rate, largely due to expanding ...
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(University of Pretoria, 2006-12-07)This study involves the synthesis and structural characterization of new metal complexes of thiophene derivatives that have (potential) liquid crystalline properties. Thiophene has been selected because of its stability ...
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(University of Pretoria, 2015)Polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) are toxic environmental pollutants formed as by-products of industrial and thermal processes. They are chlorinated compounds that have ...
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(University of Pretoria, 2003)A novel chromatographic method was devised that makes use of the superb group separation power of normal phase supercritical fluid chromatography (SFC) combined with a fast second separation by a resistively heated gas ...
Now showing items 1-20 of 101