Author:Jahajeeah, NDate:2006Numerical modelling has successfully been used as an efficient tool to convert a gravity cast brake calliper to a thixocasting process. The thixo-modue of Procast has been used for the modelling process to obtain optimum processing parameters. ...Read more
Author:Van Den Broek, GJDate:Jul 1984The effect of aircraft wind modelling on the external store loads is investigated by computing that effect for the external flow field generated by the wing. The application of the panelling /boundary condition method to the perturbation flow ...Read more
Author:Mapako, MDate:Apr 2009Projects and programmes to disseminate energy technologies in Africa have been undertaken for decades with little success. These have included initiatives to promote and disseminate family and community biogas digesters, improved woodstoves, ...Read more
Author:Mapako, MCDate:Apr 2009Projects and programmes to disseminate energy technologies in Africa have been undertaken for decades with little success. These have included initiatives to promote and disseminate family and community biogas digesters, improved woodstoves, ...Read more
Author:Naidoo, Mogesh; Sibiya, Bhekizizwe A; Bird, T; Nekhwalivhe, M; Netshandama, J; Mahlatji, MDate:Oct 2017Municipalities are required to develop an Air Quality Management Plan (AQMP) in order to work towards mitigating the negative impacts of air quality on human health and the environment. The 2016 AQMP for the City of Johannesburg (CoJ) ...Read more
Author:de Wet, P; du Plessis, JP; Woudberg, SDate:May 2010In many of the continuum processes typically found in chemical engineering, the functional dependency of the dependent variable is only known for large and small values of the independent variable. Exact solutions in the transitional regime ...Read more
Author:Rodda, N; Amory, A; Kfir, RDate:1993The feasibility of applying microbial risk assessment techniques in South Africa was evaluated by assessing risks associated with enteric viruses in raw and treated drinking water. Maximum daily risks associated with treated drinking water ...Read more
Author:Kravitz, J; Matthews, M; Bernard, Stewart; Griffith, Derek JDate:Feb 2020Eutrophication and increasing prevalence of potentially toxic cyanobacterial blooms among global inland water bodies is becoming a major concern and requires direct attention. The European Space Agency recently launched the Ocean and Land ...Read more
Author:Roberts, MKC; Lamos, RA; Murphy, SKDate:Apr 2004Most rock related fatalities and injuries in South African gold mines occur in the stope face area. These mines generally do not use rockbolts to support this area. This paper describes short rockbolt applications in the stope face area in a ...Read more
Author:Moller, H; Govender, G; Stumpf, WEDate:Sep 2010The conventional casting alloy A356 is probably one of the most popular alloys used for semi-solid metal (SSM) forming. This is due to its high fluidity and good castability. This alloy can be heat treated alternatively to the T4, T5 or T6 ...Read more
Author:Du Toit, Melise; Wilms, Josefine M; Smit, GJF; Brink, WDate:Oct 2016Long-term forecasting of river runoff is important for climate scientists and hydrologists. By analysing the processes of a river basin characterized by measurable variables, an empirical data-driven model can be constructed. The support ...Read morecb
Author:Niken, A; Erasmus, Louwrence DDate:Oct 2014This article covers a descriptive case study on the application of systems engineering and systems engineering management at Armscor. The report also covers the investigation into development methods used and the how the requirements changes ...Read more
Author:Niken, A; Erasmus, Louwrence DDate:Sep 2014This article covers a descriptive case study on the application of systems engineering and systems engineering management at Armscor. The report also covers the investigation into development methods used and the how the requirements changes ...Read more
Author:Brent, AC; Rogers, DEC; Ramabitsa-Siimane, TSM; Rohwer, Mark BDate:2007This paper focuses on the application of the analytical hierarchy process (AHP) technique in the context of sustainable development to establish and optimise health care waste management (HCWM) systems in rural areas of developing countries. ...Read more
Author:Holloway, Jennifer P; Haines, L; Leask, KDate:Nov 2010When modelling count data that comes in the form of a time series, the static Poisson regression and standard time series models are often not appropriate. A current study therefore involves the evaluation of several observation-driven and ...Read more
Author:Van Tienhoven, AM; Olbrich, KA; Skoroszewski, R; Taljaard, J; Zunckel, MDate:Dec 1995South Africa is the most industrialised country in southern Africa and stands at some risk from negative pollution impacts. To the authors' knowledge, this paper presents the first attempt to apply the critical loads approach on the African ...Read more
Author:Maasdorp, APBDate:Nov 1983A simple diffusion equation has been successfully used to monitor the initial fast absorption of chromium by both dyed and undyed wool.Read more
Author:Pandelani, Thanyani A; Miyambo, MDate:Oct 2013The anti-vehicular landmines (AVLs) and improvised explosive devices (IEDs) are utilised to affect the mobility of military forces in order to inhibit their operations. These devices disable and destroy vehicles while injuring or killing the ...Read more
Author:Steyn, WJVDM; Sadzik, EDate:Jul 2007In this paper the concept behind the Portable Seismic Pavement Analyser (PSPA) is discussed, followed by information on a study conducted for the Gauteng Department of Public Transport, Roads and Works (GDPTRW). Data were collected from a ...Read more
Author:Sun, X; Xu, Y; Jovanovic, Nebojsa; Kapangaziwiri, Evison; Brendonck, L; Bugan, Richard DHDate:Apr 2013Recharge estimation in arid and semi-arid areas is very challenging. The chloride mass balance method applied in western South Africa fails to provide reliable recharge estimates near coastal areas. A relationship between rainfall events and ...Read more