SUNScholar is a leading digital archive for the preservation and promotion of the research output of Stellenbosch University.
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Recently Added
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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 ... -
Fearing the stranger? : homiletical explorations in a fear-filled world
(AOSIS, 2019)The large number of xenophobic attacks that broke out in different places in South Africa during 2008 was still continuing unabated 10 years later. We were stressed to come to terms with the reality that this occurred in ... -
Fall history and associated factors among adults living with HIV-1 in the Cape Winelands, South Africa : an exploratory investigation
(Oxford University Press, 2019)Background. People with HIV-1 (PWH) exhibit a high fall incidence and increased fracture risk. As little is known about fall frequency and associated factors in PWH residing in lower-middle-income countries (LMIC), we ... -
Potential of host serum protein biomarkers in the diagnosis of tuberculous meningitis in children
(Frontiers Media, 2019)Background: Tuberculous meningitis (TBM) is the most severe form of tuberculosis and results in high morbidity and mortality in children. Diagnostic delay contributes to the poor outcome. There is an urgent need for new ... -
A comment on critiques of the article Age- and education-related effects on cognitive functioning in Colored South African women
(HESA, 2019)A recently published article on the cognitive functioning of coloured women, authored by five Stellenbosch University academics received much criticism from those in the academy and those outside. The public outcry focused ... -
Towards the contextualisation of democracy : a critical precursor for citizenship education in universities
(HESA, 2019)In response to a controversial article, which sought to draw connections between intelligence and essentialist understandings of race and ethnicity, a university Senate has adopted a motion, geared at off-setting any future ... -
Tolerance as an imperative for higher education and democracy
(HESA, 2019)Beyond the noise and din of the numerous #feesmustfall campaigns, there arose deeper concerns of the lack of regard on display not only between protesters and institutional authorities, but between protesting and non-protesting ... -
Teachers need scientific and experiential knowledge on learning support : recommendations for a teacher educator
(HESA, 2019)This paper discusses teachers’ lack of scientific (theoretical) knowledge on learning support in the classroom. This was one of the key findings of a basic exploratory qualitative study conducted in a South African secondary ... -
Accounting students' perceptions : internal control theory moves outside the classroom and online
(HESA, 2019)Many have argued that faculty should transform the way accounting programmes are presented to undergraduate students. Changes in student expectations, professional qualifications and employer demands have driven innovative ... -
The development of management accounting skills in situations where practical exposure is limited : the perceptions of training officers in South Africa
(HESA, 2019)Training office auditing firms in South Africa are required by the South African Institute of Chartered Accountants (SAICA) training regulations to provide basic exposure to trainees in management accounting. The purpose ... -
Phase 2b controlled trial of M72/AS01E vaccine to prevent tuberculosis
(Massachusetts Medical Society, 2018-10-25)BACKGROUND: A vaccine to interrupt the transmission of tuberculosis is needed. METHODS: We conducted a randomized, double-blind, placebo-controlled, phase 2b trial of the M72/AS01E tuberculosis vaccine in Kenya, South ... -
Feather and skin development of ostriches Struthio camelus
(AOSIS, 2018)Information on feather and skin growth is important for the development of mathematical optimisation nutritional models for ostriches. Ostriches (n = 65) were subjected to a four-stage formulated growth diet programme ... -
Mutations in the pantothenate kinase of Plasmodium falciparum confer diverse sensitivity profiles to antiplasmodial pantothenate analogues
(Public Library of Science, 2018-04-03)The malaria-causing blood stage of Plasmodium falciparum requires extracellular pantothenate for proliferation. The parasite converts pantothenate into coenzyme A (CoA) via five enzymes, the first being a pantothenate ... -
Study of the Durban Bight shoreline evolution under schematised climate change and sand‑bypassing scenarios
(South African Institution of Civil Engineering, 2018)The Durban Bight beaches, on the KwaZulu-Natal coast of South Africa, have been the topic of several studies in the past, because of their recreational and economic value. These beaches are mainly nourished via a sand-pumping ... -
The decarbonisation of transport logistics : a South African case study
(Unisa Press, 2018-10-09)South Africa is currently one of the "dirtiest" economies in the world in terms of carbon emissions. The South African economy is heavily dependent on energy-intensive industries, such as mining and primary minerals ... -
Bank competition in sub-Saharan African countries : has anything changed in the light of 2007-2008 global financial crisis?
(University of Piraeus, 2018)This paper investigated the changes in competitive behaviour of banks in sub-Saharan Africa, following the 2007/2008 global financial crisis. Using 481 bank-year observations from an unbalanced panel of 83 banks from six ...
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