Shadows of a Schwarzschild Black Hole Surrounded by a Spherically Symmetric Dark Matter by Ibrahim, Ahmad

“…In this thesis, using general relativity, the null geodesics and black hole shadow of a spherically symmetric configuration of a black hole (surrounded by a dark matter shell) are studied. First, the standard results of the photon sphere of Schwarzschild de-Sitter black hole is revisited and analyzed more carefully. …”
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A proposed segmented precast concrete spherical cap: geometry, structural stability and construction by Kenawy, Maha

“…Additional insights on the properties and solution parameters of finite element modelling of concrete shell structures are presented based on the structural analysis of this work. …”
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The influence of cross-winds on the performance of natural draft dry-cooling towers. by Du Preez, Abraham Francois

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The performance of structured cobalt catalysts in Fischer-Tropsch synthesis by Zhuang, Youqi

“…The Fischer-Tropsch activity was recorded and modelled using a reaction-diffusion pellet inside a continuous stirred tank reactor model. …”
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Investigation of the effect of ocean acidification on the haemocyte proteome of the South African abalone, Haliotis midae by Carroll,SarahLeigh

“…Haliotis midae is an economically important marine invertebrate that is farmed in South Africa, contributing more than half of the revenue generated by the aquaculture industry. …”
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Aspects of stress with particular reference to mytilid mussels and their parasites by Webb, Stephen Charles

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Changing social landscapes of the Western Cape coast of southern Africa over the last 4500 years by Jerardino, Antonieta Mafalda Susana

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Determination of shakedown boundary and fitness-assessment-diagrams of cracked pipe bends by ElSaadany, Mostafa

“…Line Spring Elements (LSE) are embedded in quadratic shell elements to model part through cracks. Failure assessment diagrams (FAD) are developed through linking the J-integral fracture mechanics parameter with the shakedown limit moments of the analyzed cracked 90-degree pipe bend. …”
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Signature splitting and non-axiality in the nuclei ¹⁶⁴Ta and ¹⁶⁵Ta by Roux, David Gerhardus

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Design of an ironless doublee-rotor radial flux air-cored permanent magnet machine by Oosthuizen, Gert Immelman

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Invisible invasion: finding Perna viridis amongst South African green mussels by Micklem, Jessica Muriel

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Subterranean space - Integrating generic commercial entities within the Gauteng system

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Characterization of industrial high speed steel roll material and effect of annealing prior to heat treatment on the structure and properties

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Mining Selected Metagenomes/metatranscriptomes for Biosynthetic Gene Clusters and Antimicrobial Resistance Genes by Yamany, Ahmed

“…On the other hand and due to the selection pressure on the microbial ecosystems by the wide use of antibiotics, gut microbiome of COVID-19 patients’ and water sewage samples had more than 70% of the detected AMR gene families where gut microbiome of COVID-19 patients’ sample alone reported to had more than 50% of AMR genes detected by CARD. …”
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Resonance ionization spectroscopy methods for zinc and indium by Waso, Frederick John

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Structural performance of corrugated packaging. by Portwig, Heinrich

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Investigation of the determinants of thermal stability of the nitrile hydratase from Geobacillus pallidus RAPc8 by Kianja, John Maina

“…Each individual mutation found in the composite mutants, was separately introduced into the DNA coding for the Geobacillus pallidus RAPc8 NHase by site directed mutagenesis. …”
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Quantifying the potential of almond production in the Western Cape for future extension and high-density plantings in suitable climatic regions by Du Toit, Nina

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The terminal pleistocene of Klipfonteinrand rock shelter in the Cederberg by Bluff, Kyla Catherine Pelton

“…The study aims, firstly, to unpack changes in the composition of the archaeological assemblage of Klipfonteinrand during Marine Isotope Stage 2 (MIS 2), by analysing variation in the abundance and composition of lithics, ostrich eggshell, marine shell, charcoal, ochre, bone and roof spall from the site; and, secondly, to situate these changes in the context of changes in palaeoenvironments and patterns in the use of nearby and more distant archaeological sites. …”
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