Author:Garland, Rebecca MDate:Feb 2012This article discusses the effects of acid mine drainage on human health. Skin irritation, kidney damage, neurological diseases are some of the human health effects.Read more
Author:Garland, Rebecca MDate:2011Acid Mine Drainage (AMD) has recently attracted lots of attention in South Africa, both in parliament and in the media. AMD is formed in the mine itself through a variety of chemical reaction pathways, before it enters the environment as ...Read more
Author:Vadapalli, VRK; Zvimba, JN; Mathye, M; Fischer, H; Bologo, LDate:Oct 2015This study investigated the implications of using two grades of limestone from a paper and pulp industry for neutralization of acid mine drainage (AMD) in a pilot sequencing batch reactor (SBR). In this regard, two grades of calcium carbonate ...Read more
Author:Brink, S; Dorfling, C; Aldrich, CDate:May 2016Relatively small rocks that detach from stope hanging walls during periods when miners are working in the vicinity pose a lethal risk, and contribute significantly to underground fatalities in the South African mining industry, totalling 89 ...Read more
Author:von Bergmann, HM; Forbes, A; Roberts, T; Botha, LRDate:Aug 2008Results are presented on the influence of acoustic waves on the performance of high-repetition-rate TEA CO2 lasers. It is shown that acoustic waves generated inside the laser cavity lead to nonuniform discharges, resulting in a deterioration ...Read more
Author:Van Reenen, Coralie A; Du Plessis, ChrisnaDate:Aug 2021This research set out to broaden the pool of evidence regarding the acoustic conditions at schools in South Africa. A review of local and international literature, standards and design guidelines shows that the ideal classroom acoustic ...Read more
Author:Du Plessis, CDate:Sep 2005Sustainable development, and by extension sustainable building, is an evolving concept that relies for its implementation on the development of regional and local approaches and solutions. There is, in particular, a split between the definitions, ...Read more
Author:Rosman, Benjamin S; Ramamoorthy, SDate:Apr 2015An agent tasked with solving a number of different decision making problems in similar environments has an opportunity to learn over a longer timescale than each individual task. Through examining solutions to different tasks, it can uncover ...Read more
Author:Wepener, V; Van Vuren, JHJ; Chatiza, FP; Mbizi, Z; Slabbert, L; Masola, BDate:2005This paper presents results from a field study in the Rietvlei Wetland system, Gauteng, South Africa using the freshwater mollusk and freshwater fish as bioindicator organisms. Active biomonitoring (ABM) exposures were conducted where organisms ...Read more
Author:Simpson, BRS; Van Wyngaardt, WMDate:2006Authors describe the activity measurements undertaken at the CSIR’s National Metrology Laboratory on a solution of the pure beta emitting Radio nuclide phosphorus-32 that formed part of an international key comparison. Depending on the ...Read more
Author:Simpson, BRS; Van Wyngaardt, WMDate:Oct 2006The absolute activities of the pure beta-emitters Sr-89 and Y-90 have been determined by a direct method, namely the triple-to-double coincidence ratio (TDCR) efficiency calculation technique. This undertaking has extended further the number ...Read more
Author:Afolayan, AJ; Wintola, OA; Fouché, GerdaDate:2016The acute and subacute toxicity profile of the aerial extract of Monsonia angustifolia in Wistar rats was evaluated. The Organization for Economic Cooperation and Development (OECD) 420 guideline was adopted in the acute toxicity testing with ...Read more
Author:Lukhele, LP; Mamba, BB; Musee, N; Wepener, VDate:Jan 2015This study investigated the toxicity of double walled carbon nanotubes (DWCNTs) to three aquatic organisms, namely, Pseudokirchneriella subcapitata, Daphnia pulex, and Poecilia reticulata under the influence of exposuremedia properties ...Read more
Author:Oladele, DA; Markus, ED; Abu-Mahfouz, Adnan MIDate:Nov 2021Background: With the projected upsurge in the percentage of people with some form of disability, there has been a significant increase in the need for assistive mobility devices. However, for mobility aids to be effective, such devices should ...Read more
Author:Arabi, Sumaiya; Taljaard, Susan; Weerts, Steven PDate:Mar 2022Globally sustainable environmental practices in ports have been linked to socio-economic benefits. While African ports are increasingly acknowledging environmental issues and starting to address these in environmental policy, many are still ...Read more
Author:Robins, NS; Chilton, PJ; Cobbing, JEDate:Jan 2007Whilst groundwater vulnerability mapping and the delineation of resource and source protection zones have become an appropriate set of management tools for Britain as incorporated in European policy, much of semi-arid Africa is still dealing ...Read more
Author:Tizora, P; Le Roux, Alize; Mans, Gerbrand G; Cooper, Antony KDate:Sep 2018Models which integrate and evaluate diverse factors of Land Use and Land Cover (LULC) change can be used to guide planners in making more informed decisions and achieving a balance between urban growth and preservation of the natural environment. ...Read more
Author:Roux, DJ; Kleynhans, CJ; Thirion, C; Hill, Liesl; Engelbrecht, JS; Deacon, AR; Kemper, NPDate:Oct 1999The River Health Programme (RHP) is being designed to generate information regarding the ecological state of riverine ecosystems in South Africa. An adaptive assessment and management procedure is suggested as a means of linking the monitoring ...Read more
Author:Onumanyi, Adeiza J; Abu-Mahfouz, Adnan MI; Hancke, GPDate:Feb 2020Some low power wide area network (LPWAN) developers such as Sigfox, Weightless, and Nwave, have recently commenced the integration of cognitive radio (CR) techniques in their respective LPWAN technologies, generally termed CR-LPWAN systems. ...Read more
Author:Luus, FPS; Van den Bergh, F; Maharaj, BTJDate:Jun 2014Multitemporal land-use analysis is becoming increasingly important for the effective management of Earth resources. Despite that, consistent differences in the viewing and illumination geometry in satellite-borne imagery introduce some issues ...Read more