Author:Mackintosh, G; Colvin, CDate:May 2003The impact of water-borne disease in South Africa is significant. An estimated 43,000 deaths per annum, including 20% of deaths in the 1-5 years age group, are directly attributable to diarrhoeal diseases. Drinking water quality provision in ...Read more
Author:James, ADate:Mar 1997Chains are used for various purposes in a wide range of industries. This paper describes three case studies where a failure analysis was carried out on chains used in markedly different applications namely: a furnace health, a drilling rig ...Read more
Author:Botha, Johannes G; Pieterse, HeloiseDate:Mar 2020Fake news, often referred to as junk news or pseudo-news, is a form of yellow journalism or propaganda created with the purpose of distributing deliberate disinformation or false news using traditional print or online social media. Fake news ...Read more
Author:Smith, Andrew CDate:Jul 2021The English language is but one of many languages globally in use, yet it seems to dominate the world of automation in its application to computer programming. Our research considers a programming environment in which the written word is not ...Read more
Author:Jule, L; Mal’nev, V; Mesfin, B; Senbeta, T; Dejene, FDate:Jul 2015We investigate light scattering by core–shell consisting of metal/dielectric composites considering spherical and cylindrical nanoinclusions, within the framework of the conventional Rayleigh approximation. By writing the electric potential ...Read more
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: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: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: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: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: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:Snyman, HG; Forssman, P; Kafaar, A; Smollen, MDate:2000Sewage sludge is typically dewatered using drying beds, belt filter presses or centrifuges. Mechanical dewatering of sludge is costly in terms of capital and running costs, especially the flocculent. In an attempt to address the need for more ...Read more
Author:Robbins, SL; Heyns, PS; Heyns, Johan ADate:May 2020The majority of condition monitoring techniques employed today consider the acquisitioning and analysis of structural responses as a means of profiling machine condition and performing fault detection. Modern research and newer technologies ...Read more