Author:Moodie, B; La Grange, CCDate:1958By applying the Burstlein principle of controlled crushing and screening to coal from Blesbok Collier it is possible to obtain a product of lower ash and higher swelling number but it is probably preferable to effect these improvements in the ...Read more
Author:Brown, ACDate:1985This review of international literature on the biological effects of crude oil pollution in the sea relevant to the South African situation is based on some hundred selected referenced.Read more
Author:Le Roux, Lukas JDate:Aug 2009Dye-sensitised solar cells (DSC) have attracted much attention during the last few years due to their high efficiencies and their potentially low production costs. The technology is based on a thin layer of nano sized, high band gap (3.2 eV) ...Read more
Author:Davis, PC; Small, JCDate:1964A range of experiments was done to investigate the influence of the distance of the impeller from the bottom of the cell on the product yield and ash content of the products.Read more
Author:Davis, PCDate:1963An investigation was conducted to determine the effects of factors on the floatability of small samples of Greenside coal.Read more
Author:Mwila, Martin KDate:Aug 2014Wireless technologies have been rapidly spreading all around the world and have become embedded in most of our modern technologies. Mobility, portability, low cost, and the ease of network installation are the key features that have recently ...Read more
Author:La Grange, JH; La Grange, CCDate:1971The electrically powered car, on the other hand, not only causes no air pollution, but is also silent and requires little attention and maintenance. In addition, electric power distributors throughout the world should welcome the use of off ...Read more
Author:Smith, Andrew CDate:Mar 2009In this document the author reports on research done in the field of Embedded Interaction as well as events at which the public was exposed to this research. The author also reports on the dissemination of the research results, being mostly ...Read more
Author:Wright, CDate:Feb 2011BHP Billiton Mozambique Aluminium Smelter (MOZAL) experienced structural damage to the Fume Treatment Centre (FTC) caused by unanticipated corrosion. As a result MOZAL was in the process of rebuilding the FTC, an exercise that entailed a ...Read more
Author:Scott, DFDate:2000Certification has been responsible for a very large improvement in the standard of forest management in South Africa. The reasons for the positive role of certification are set out briefly below. Firstly, and most importantly, certification ...Read more
Author:Ecosystem ProgrammesDate:Dec 1982The National Programme for Environmental Sciences is a cooperative undertaking of scientists and scientific institutions in South Africa concerned with research related to environmental problems. This annual report describes the rationale, ...Read more
Author:Prozzi, JA; Sanders, PJ; du Toit, GD; De Beer, MorrisDate:26 May 2009This report describes a new methodology for the determination of Equivalent Damage Factors (EDFs) of vehicles with multiple axle and wheel configurations on pavements. The basic premise of this new procedure is that "equivalent pavement ...Read more
Author:Gass, BG; Ventura, DFC; De Beer, MorrisDate:Mar 1993The use of stabilised layers is cost effective in road construction in South Africa. Some stabilised materials have however been found to be susceptible to erosion. To identify erodible materials the Erosion Test was developed in 1989. ...Read more
Author:Schutte, ICDate:Mar 2000Road traffic collision result in both human loss and cost to the company. Government and other role players addressing this problem require reliable information on the cost of collisions to the economy. Collisions costs are also used in the ...Read more
Author:Erasmus, TC; Du Plessis, HSLDate:1963The objective of the report was to ascertain the order of the residence time distribution within the Drewboy washer.Read more
Author:Vogel, F; Steyn, WJvdMDate:Mar 2000The report focuses on aspects such as possible wireless data transmission, standardization and mesurement methodologies and sensor technology. Various avenues are explored for the development of sensors while new emerging technologies that ...Read more
Author:Hemp, DADate:May 1992This report is concerned with the analysis data from three sites during mining with and without backfill, in order to determine the effect that backfill on regional seismicity. Since the geology and stress fields in any two areas used for ...Read more
Author:Maneylaws, A; Norman, G; von Glehn, FHDate:Dec 1997An extensive literature review of international work of mining equipment noise control has been carried out. The sources of noise on percussion rock drills, continuous miners, dust scrubbers and fans, long wall machinery and trackless vehicles ...Read more