University Centres and Units: Recent submissions
Now showing items 1-20 of 31734
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Supplementing the lack of ubuntu? The ministry of Zimbabwe’s Mashoko Christian Hospital to people living with HIV and AIDS in challenging their stigmatisation in the church
(AOSIS, 2019)This article uses the African communal concept of ubuntu to reflect on the ministry of Mashoko Christian Hospital (MCH), Zimbabwe, to people living with the human immunodeficiency virus (HIV) and AIDS (PLWHA) during the ... -
Diffusion markers of dendritic density and arborization in gray matter predict differences in intelligence
(Nature Research (part of Springer Nature), 2018)Previous research has demonstrated that individuals with higher intelligence are more likely to have larger gray matter volume in brain areas predominantly located in parieto-frontal regions. These findings were usually ... -
Similarity of introduced plant species to native ones facilitates naturalization, but differences enhance invasion success
(Nature Research (part of Springer Nature), 2018)The search for traits associated with plant invasiveness has yielded contradictory results, in part because most previous studies have failed to recognize that different traits are important at different stages along the ... -
The structure and function of the global citrus rhizosphere microbiome
(Nature Research (part of Springer Nature), 2018)Citrus is a globally important, perennial fruit crop whose rhizosphere microbiome is thought to play an important role in promoting citrus growth and health. Here, we report a comprehensive analysis of the structural and ... -
Standard method for microCT-based additive manufacturing quality control 4 : Metal powder analysis
(Elsevier, 2018)X-ray micro computed tomography (microCT) can be applied to analyse powder feedstock used in additive manufacturing. In this paper, we demonstrate a dedicated workflow for this analysis method, specifically for Ti6Al4V ... -
Standard method for microCT-based additive manufacturing quality control 3 : surface roughness
(Elsevier, 2018)The use of microCT of 10 mm coupon samples produced by AM has the potential to provide useful information of mean density and detailed porosity information of the interior of the samples. In addition, the same scan data ... -
Standard method for microCT-based additive manufacturing quality control 2 : density measurement
(Elsevier, 2018)MicroCT is best known for its ability to detect and quantify porosity or defects, and to visualize its 3D distribution. However, it is also possible to obtain accurate volumetric measurements from parts – this can be used ... -
Standard method for microCT-based additive manufacturing quality control 1 : porosity analysis
(Elsevier, 2018)MicroCT is a well-established technique that is used to analyze the interior of objects non-destructively, and it is especially useful for void or porosity analysis. Besides its widespread use, few standards exist and none ... -
High fat programming and cardiovascular disease
(MDPI, 2018)Programming is triggered through events during critical developmental phases that alter offspring health outcomes. High fat programming is defined as the maintenance on a high fat diet during fetal and/or early postnatal ... -
Cardiac glucolipotoxicity and cardiovascular outcomes
(MDPI, 2018)Cardiac insulin signaling can be impaired due to the altered fatty acid metabolism to induce insulin resistance. In diabetes and insulin resistance, the metabolic, structural and ultimately functional alterations in the ... -
The multifaceted antibacterial mechanisms of the pioneering peptide antibiotics tyrocidine and gramicidin S
(American Society for Microbiology, 2018)Cyclic β-sheet decapeptides from the tyrocidine group and the homologous gramicidin S were the first commercially used antibiotics, yet it remains unclear exactly how they kill bacteria. We investigated their mode of action ... -
Selective laser melting produced Ti-6Al-4V : post-process heat treatments to achieve superior tensile properties
(MDPI, 2018)Current post-process heat treatments applied to selective laser melting produced Ti-6Al-4V do not achieve the same microstructure and therefore superior tensile behaviour of thermomechanical processed wrought Ti-6Al-4V. ... -
Mechanical properties and in situ deformation imaging of microlattices manufactured by laser based powder bed fusion
(MDPI, 2019)This paper reports on the production and mechanical properties of Ti6Al4V microlattice structures with strut thickness nearing the single-track width of the laser-based powder bed fusion (LPBF) system used. Besides providing ... -
Challenges and opportunities for monitoring wild Nile crocodiles with scute mark-recapture photography
(AOSIS, 2018)The global conservation status of Nile crocodiles (Crocodylus niloticus) was last assessed in 1996. The species presents particular difficulty in monitoring because it can be cryptic, require expertise to handle, and caudal ... -
Working towards an increase in manganese ferroalloy production in South Africa - a research agenda
(Southern African Institute of Mining and Metallurgy, 2018)Although South Africa is endowed with one of the largest land-based deposits of manganese ore, in the order of 80% of the ore mined is exported for beneficiation elsewhere. The past 15 years has seen a decline in the ... -
Investigating the behaviour of PGEs during first-stage leaching of a Ni-Fe-Cu-S converter matte
(Southern African Institute of Mining and Metallurgy, 2018)In a first-stage atmospheric leach in a Sherritt Ni-Cu matte leach process, a Ni-Cu-Fe-S Peirce-Smith converter matte is contacted with recycled aqueous copper sulphate/sulphuric acid solution (spent solution) with the ... -
Investigation of secondary zinc oxides as an alternative feed to the Skorpion Zinc process : Part 2 - process considerations and economic analysis
(Southern African Institute of Mining and Metallurgy, 2018)Skorpion Zinc is investigating the possibility of using secondary zinc oxides as an alternative feed to supplement the zinc oxide ore feed and to extend the life of mine. Part 1 of this communication provides the technical ... -
Investigation of secondary zinc oxides as an alternative feed to the Skorpion Zinc process : Part 1 — leaching alternative zinc oxides
(Southern African Institute of Mining and Metallurgy, 2018)Skorpion Zinc processes zinc oxide ore using a sulphuric acid leaching, solvent extraction, and electrowinning process to produce Special High Grade zinc. The company investigated the possibility of supplementing ore with ... -
Range expansion of the economically important Asiatic blue tick, Rhipicephalus microplus, in South Africa
(AOSIS, 2019)The Asiatic blue tick, Rhipicephalus microplus, a known vector of bovine babesiosis and bovine anaplasmosis, is of great concern in the cattle industry. For this reason, detailed knowledge of the distribution of R. microplus ... -
Use of butorphanol and diprenorphine to counter respiratory impairment in the immobilised white rhinoceros (Ceratotherium simum)
(AOSIS, 2018)Opioid-induced immobilisation results in severe respiratory impairment in the white rhinoceros. It has therefore been attempted in the field to reverse this impairment with the use of opioid agonist-antagonists, such as ...
