Author:Maspero, EL; Van Dyk, FE; Ittmann, HWDate:Nov 2008As a direct result of the 9-11 New York attack all modes of freight and passenger transportation were scrutinised for vulnerabilities. Over 90% of international trade takes place via sea transport for at least some part of the supply chain ...Read more
Author:Murray, J; Gulumian, M; Nelson, G; Darwin, L; Borm, P; Castranova, V; Donaldson, K; Vallyathan, VDate:Mar 2004The South African gold mining industry recently joined the World Health Organisation Global Campaign to Eliminate Silicosis. Subsequently, a number of research projects are being focused on the evaluation of silica dust levels and dust allaying ...Read more
Author:du Toit, B; Malherbe, GF; Lambrechts, H; Naidoo, Sasha; Eatwell, Karen ADate:Apr 2018The growing demand for renewable wood products and competition for land in South Africa will necessitate expansion of planted forests into moderately dry areas. Farm forestry and agroforestry options using species preselected for drought ...Read more
Author:Musee, N; Lorenzen, LDate:Jan 2013Market dynamics offer positive (incentive) or negative (disincentive) feedback loops that shape the research needs for, or certain aspects of, a particular technology. Our case study results illustrate how market dynamics have influenced the ...Read more
Author:Thiede, RN; Fabris-Rotelli, IN; Debba, Pravesh; Cleghorn, CWDate:Jun 2023Accessibility analyses are conducted for a variety of applications, including urban planning and public health studies. These applications may aggregate data at the level of administrative units, such as provinces or municipalities. Accessibility ...Read more
Author:Van Rensburg, JR; Smit, D; Veldsman, ADate:May 2007This paper is part of a series dealing with the “Expansion of European Network of Living Labs (ENoLL) to Africa - Opportunities, Synergies, Benefits and Limitations”. It provides an overview of the Sekhukhune Rural Living Lab and explores ...Read more
Author:Willemse, MG; Siyasiya, CW; Marais, D; Venter, AM; Arthur, Nana KKDate:Feb 2023Although additive manufacturing is fast gaining traction in the industrial world as a reputable manufacturing technique to complement traditional mechanical machining, it still has problems such as porosity and residual stresses in components ...Read more
Author:Van Wyk, Llewellyn VDate:Aug 2015Significant pressure is being brought to bear on material manufacturers to green the materials and products produced by industry in general – and the construction sector is no exception, for good reason. The construction industry and its ...Read more
Author:Mahamood, RM; Akinlabi, ET; Shukla, M; Pityana, Sisa LDate:Feb 2013The economy of using Laser Metal Deposition (LMD) process in the manufacturing of aerospace parts depends on the right processing parameters. LMD is an additive manufacturing technology capable of producing complex parts directly from the CAD ...Read more
Author:Jansen van Rensburg, Gerhardus J; Kok, S; Wilke, DNDate:Jul 2012Tests were done on the compressive behaviour of different metal matrix composite materials. These extremely hard engineering materials consist of ceramic particles embedded in a metal alloy binder. Due to the high stiffness and brittle nature ...Read more
Author:Ampofo-Anti, NDate:Nov 2010The building life cycle demands both operational and embodied energy. It has been estimated that in conventional buildings, operational energy represents approximately 80-90% of total life cycle energy, while embodied energy accounts for the ...Read more
Author:Van Wyk, Llewellyn VDate:Feb 2009The construction industry is a multi-billion dollar industry, and the production and harvesting of raw materials for building purposes occurs on a world-wide scale. Environmental issues are becoming a major world topic, and the construction ...Read more
Author:Alabi, S; Popoola, API; Popoola, OM; Mathe, Ntombizodwa R; Abdulwahab, MDate:Feb 2023Energy is a requisite factor for technological advancement and the economic development of any society. Currently, global energy demand and supply largel rely on fossil fuels. The use of fossil fuels as a source of energy has caused severe ...Read more
Author:Egambaram, Orielia P; Kesavan Pillai, Sreejarani; Ray, Suprakas SDate:Mar 2020UV radiation is one of the critical environmental stress factors for human skin, which can trigger various problems such as pruritus, burning, erythema, premature skin aging and skin cancer. Hence, UV protection has become an indispensable ...Read more
Author:Egambaram, Orielia P; Kesavan Pillai, Sreejarani; Ray, Suprakas SDate:Mar 2020UV radiation is one of the critical environmental stress factors for human skin, which can trigger various problems such as pruritus, burning, erythema, premature skin aging and skin cancer. Hence, UV protection has become an indispensable ...Read more
Author:Butgereit, LDate:Jul 2007Homework is a necessary evil in the path of learning mathematics at school. Mathematics homework is traditionally seen as difficult and boring. In the case of difficult homework, “math clubs” and “math extra lessons” are often perceived as ...Read more
Author:Butgereit, LDate:Apr 2007It is common cause that the average mathematics mark among high school learners in South Africa has declined. Traditional “math clubs” and “math extra lessons” often do not work because of a number of reasons including 1) it being “uncool” ...Read more
Author:Kruger, Rynhardt P; De Wet, F; Niesler, TDate:May 2023Documents containing mathematical content remain largely inaccessible to blind and visually impaired readers because they are predominantly published as untagged PDF which does not include the semantic data necessary for effective accessibility. ...Read more
Author:Singh, M; Mukoma, Peter; North, Brian C; Majozi, TDate:Dec 2020Fossil fuels have earned a reputation as unsustainable sources of energy, due to the release of carbon emissions that are attributable to global warming. To overcome the extensive release of carbon emissions into the environment, different ...Read more
Author:Botha, LR; Bollig, C; Esser, D; Jacobs, Cobus; Preussler, DDate:Jul 2009A mathematical model was developed that accurately predicts the performance of an optically pumped HBr laser. Relatively high conversion efficiency was achieved. Tm pumped Ho:YLF is a viable source for pumping HBr laser, while HBr can be ...Read more