Author:Mokoena, Refiloe; Motau, T; Mturi, George AJDate:Sep 2021Isothermal calorimetry is a useful technique for studying the cement hydration process that measures the heat flow of cement paste during hydration. Standard cement properties, such as compressive strength, setting times and compatibility can ...Read more
Author:Thobakgale, Setumo L; Ombinda-Lemboumba, Saturnin; Mthunzi-Kufa, PatienceDate:Feb 2019Nonessential amino acids (NEAAs) are the building blocks for producing proteins of various functionalities within living systems. For example, from NEAAs, humans produce proteins that are important for cell repair, cell division and synthesis ...Read more
Author:Smollen, M; Kafaar, ADate:1997The principal objective of this work is to provide a more effective alternative for sludge conditioning prior to mechanical dewatering. The common use of polyelectrolytes often results in the anal cake solids concentration not sufficiently ...Read more
Author:Brent, AC; Pretorius, MWDate:Jun 2009The desire to improve the quality of life has driven research and development (R&D), and as a result technology. However, it has been noted that global R&D problems are, still, not well structured, and there are no unique solutions for the ...Read more
Author:Von Solms, SDate:Aug 2015The use of debit and credit cards has become indispensable to consumers worldwide. This cashless method of payment offers flexibility and convenience. It eliminates the safety risk of carrying large cash amounts in person and cards can be ...Read more
Author:Venter, Karien; Labuschagne, FJJ; Le Roux, M; Cloete, GDate:Jul 2013The N3 Toll Concession (Pty) Ltd (N3TC) manages the 420 km of the N3 Route between Heidelberg (Gauteng) and Cedara (KwaZulu-Natal) on behalf of SANRAL. The N3 Route is described as one of the busiest roads in South Africa linking the port of ...Read more
Author:Venter, Karien; Labuschagne, FJJ; Le Roux, M; Cloete, GDate:Jul 2013The N3 Toll Concession (Pty) Ltd (N3TC) manages the 420 km of the N3 Route between Heidelberg (Gauteng) and Cedara (KwaZulu-Natal) on behalf of SANRAL. The N3 Route is described as one of the busiest roads in South Africa linking the port of ...Read more
Author:Anochie-Boateng, Joseph; Mvelase, Gculisile MDate:Jul 2019Flat and elongated particle ratio is a shape characteristic for coarse aggregates used in pavements. The ASTM D 4791 is the standard test method to determine flat and elongated coarse aggregate particles in asphalt mixes. However, this method ...Read more
Author:Clark, D; Darazas, MDate:1978During the investigation, three methods of preheating the green coal in the guillotine door area of the stoker have been tried. One of these has proved successful. In addition, a series of preliminary laboratory tests have been carried out ...Read more
Author:Theron, Marita; Van Rooyen, Corney; Malabi, Khorommbi PDate:May 2020Forming dies used in the automotive industry are shaped as such that they impart a predetermined contour or a profile to the workpiece. Due to subsequent assembly requirements of sheet-formed body structure components, the dimensional accuracy ...Read more
Author:Mokheseng, BDate:31 Aug 2010Although renewable energy sources have a potentially beneficial role to play as part of South Africa’s energy portfolio, the common belief is that renewable energy technology, especially solar photovoltaic (PV), is not viable for electricity ...Read more
Author:Herselman, Martha E; Muwanga-Zake, ODate:Mar 2017The purpose of this article is to provide an overview of how a virtual community of practice can be delivered via a mobile social networking framework to support rural community media in the Eastern Cape Province of South Africa. The article ...Read more
Author:Kumar, R; Zhang, LDate:Mar 2010Whiskers were prepared from ramie fibers and were characterized using atomic force microscopy to evaluate their dimensions. SPI/whiskers composites (SW) were prepared by incorporating different weight contents (wt.%) of the whiskers into soy ...Read more
Author:Schutte, PC; Shaba, MNDate:Mar 2003The objective of this study was to analyze information on slipping and falling accidents and materials handling activities in the South African mining industry. Accident data pertaining to slipping, falling and materials handling accidents ...Read more
Author:Kleynhans, NDate:Nov 2014There are many services that generate or archive vast amounts of spoken audio data, on a daily basis. It is infeasible for humans to create annotations, by listening to all this data, so automatic methods are needed to process the data and ...Read more
Author:Goldbach, ODDate:Sep 1996This report presents examples of possible scenarios in which the proposed technique may be practical implemented in scattered, longwall and sequential grid mining environment.Read more
Author:Moseme, R; Foster, PJ; Demana, RL; Rupprecht, SMDate:Nov 2003Scraper winch cleaning is well known and widely used in the South African gold and
platinum mines to clean the rock from underground stopes and gullies after the blast. However, there are risks and hazards associated with the design, ...Read more
Author:Kramers, AP; Butterworth, M; Biffi, M; Van Zyl, FJ; Meyer, J; Denys, N; Ramsden, RDate:Jan 2002The literature review and findings of the Tau Tona accident report (Department of
Minerals and Energy 1999), identified a single possible scenario whereby a HFC134a/lubricant/air mixture may become explosive. The mechanism involved the
escape ...Read more