Author:Ramulifho, T; Ozoemena, KI; Modibedi, Remegia M; Jafta, CJ; Mathe, Mahlanyane KDate:Jan 2012The preparation of metal nanoparticles (Pd, Ni, Sn) supported on sulfonated multi-walled carbon nanotubes (SF-MWCNTs) using a very rapid microwave-assisted solvothermal strategy has been described. Electrocatalytic behaviour of the SF-MWCNT-Pd ...Read more
Author:Senekal, FDate:Nov 2010A new method for object detection using region based characteristics is proposed. The method uses correlation between features over a region as a descriptor for the region. It is shown that this region descriptor can be successfully applied ...Read more
Author:Kotze, FJ; Strydom, CA; Du Plessis, A; Dlamini, TLDate:Mar 2010The direct excitation of CO2 using fast (nanosecond) and ultrafast (femtosecond) pulsed lasers was investigated. A gas reaction cell was used to excite CO2 in a 50 : 50 mixture of CO2 and CH4 using nano- and femtosecond laser systems, to ...Read more
Author:Musee, N; Zvimba, JN; Schaefer, Lisa M; Nota, N; Sikhwivhilu, LM; Thwala, MelusiDate:2014The fate and behaviour assessment of ZnO- and Ag-engineered nanoparticles (ENPs) and bacterial viability in a simulated wastewater treatment plant (WWTP) fed with municipal wastewater was investigated through determination of ENPs stability ...Read more
Author:Chaúquea, EFC; Zvimba, JN; Ngila, JC; Musee, NDate:Aug 2013Wastewater treatment plants (WWTPs) employ activated sludge processes to treat domestic wastewater using a consortium of bacteria essentially to degrade organic matter. However, bacteria activity is inhibited by toxic substances; thus, ...Read more
Author:Masindi, Vhahangwele; Gitari, MW; Tutu, H; De Beer, MorrisDate:Mar 2016This study assessed the fate of inorganic contaminants post treatment of acid mine drainage by cryptocrystalline magnesite. To accomplish that, neutralization and metal attenuation were evaluated and complemented with simulations using ...Read more
Author:Masindi, Vhahangwele; Osman, Muhammad S; Mbhele, Nkhangweleni R; Rikhotso, Rirhandzu SDate:2017Basic Oxygen Furnace (BOF) slag has been widely used for Acid Mine Drainage (AMD) treatment with its reaction chemistry and contaminants attenuation mechanisms barely reported. This pioneer study was therefore designed with the aim of evaluating ...Read more
Author:Schaefer, Lisa M; Brözel, VS; Venter, SNDate:Aug 2013Investigations were carried out to evaluate and quantify colonization of laboratory-scale drinking water biofilms by a chromosomally green fluorescent protein (gfp)-tagged strain of Salmonella Typhimurium. Gfp encodes the green fluorescent ...Read more
Author:Madzivire, G; Gitari, WM; Kumar Vadapalli, VR; Ojumu, TV; Petrik, LFDate:Oct 2011The treatment of acid mine drainage (AMD) and circumneutral mine water (CMW) with South African coal fly ash (FA) provides a low cost and alternative technique for treating mine wastes waters. The sulphate concentration in AMD can be reduced ...Read more
Author:Gumbo, AD; Kapangaziwiri, EvisonDate:Oct 2021Sustaining a steady supply of water to urban communities is of importance in a period that is characterised by rapid urban population growth, a global pandemic, and a changing climate that threatens the availability of the resource from its ...Read more
Author:Musee, NDate:Apr 2012Historical analysis of different technologies' evolution reveals how many of them failed to achieve the intended societal benefits. This is primarily because their associated health, safety, and environmental effects were detrimental to the ...Read more
Author:Dabrowski, JM; Dabrowski, James M; Hill, Liesl; Macmillan, P; Oberholster, Paul JDate:Aug 2014Concentrations of pollutants were measured in water, sediment and algal samples collected along a longitudinal gradient from a stretch of the Olifants River, South Africa, that receives acid mine drainage (AMD) from the Klipspruit River. The ...Read more
Author:Verhaeghe, Benoit MJA; Rust, FC; Airey, GD; Vos, RMDate:Oct 1994As part of a study conducted for Sabita on Heavy Duty Asphalt Pavements (HDAPs), the CSIR Division of Roads and Transport Technology developed a comprehensive and practical mix design method for large-aggregate mixes. In this paper, a framework ...Read more
Author:Rust, FC; Harvey, JT; Verhaeghe, Benoit MJA; Noakes, W; Van Kirk, JDate:Oct 1994The Californian Department of Transportation commissioned a pilot project to evaluate the potential of the Heavy Vehicle Simulator (HVS) for conduction pavement studies. The effect of channelisation of traffic on the rutting behaviour of a ...Read more
Author:Huston, RJDate:1994Because of the relatively large number of possible failure mechanisms in fibre reinforced composite materials, the prediction of fatigue life in a component is not a simple process. Several mathematical and statistical models have been proposed, ...Read more
Author:Mutombo, K; Du Toit, MDate:31 Aug 2010The tensile strength and fatigue properties of Al5083-H111 welded with aluminium-magnesium alloyed ER5356 filler wire appeared similar to those of the base metal. This joint failed in the weld metal as a result of a slight reduction in hardness ...Read more
Author:Zvimba, JN; Mathye, M; Vadapalli, VRK; Swanepoel, H; Bologo, LDate:Oct 2013This study investigated Fe(II) oxidation during acid mine drainage (AMD) neutralization using CaCO(sub3) in a pilot-scale Sequencing Batch Reactor (SBR) of hydraulic retention time (HRT) of 90 min and sludge retention time (SRT) of 360 min ...Read more
Author:Malan, DF; Kononov, VA; Coetzer, SJ; Janse van Rensburg, AL; Spottiswoode, BSDate:Sep 2000Previous fundamental research projects have indicated the value of continuous closure measurements for improved support design and hazard assessment and for quantifying the effect of seismicity on stope closure. This project examines the ...Read more
Author:Dawood, Zubeida C; Keet, CMDate:Nov 2014While a foundational ontology can solve interoperability issues among the domain ontologies aligned to it, multiple foundational ontologies have been developed. Thus, there are still interoperability issues among domain ontologies aligned to ...Read more
Author:Loveday, Philip W; Long, Craig SDate:Jan 2014A transducer array comprising four transducers was developed and used to perform pulse – echo measurements on a heavy duty welded rail track. A signal processing algorithm, which uses properties of the propagating modes computed using ...Read more