Author:De Beer, Morris; Mathews, EH; Krueger, D; Maree, J; Mbhele, FN; Phalanndwa, M; Novhe, NODate:Mar 2008Traditionally acid mine water is neutralised with lime. Limestone is a cheaper alternative for such applications. A case study showed that limestone can be used effectively to replace lime for the neutralization of arsenic rich acid water. ...Read more
Author:Wessels, Konrad J; Van den Bergh, F; Scholes, RJDate:Oct 2012This paper demonstrates a simulation approach for testing the sensitivity of linear and non-parametric trend analysis methods applied to remotely sensed vegetation index data for the detection of land degradation. The intensity, rate and ...Read more
Author:Ashton, PJ; Schoeman, FRDate:1983The Pretoria Salt pan is shallow and alkaline with pronounced mesothermy at a depth of between 0.55 and 0.7 metres. Secchi disc transparencies ranged from 7 to 19 cm. Endorheic or closed drainage basins are widely distributed in many climate ...Read more
Author:Roux, FSDate:Jun 2014The quantum state for the spatial degrees of freedom of photons propagating through turbulence is analyzed. The turbulent medium is modeled by a single phase screen for weak scintillation conditions and by multiple phase screens for general ...Read more
Author:Maina, JW; Ozawa, Y; Matsui, KDate:Oct 2012Conventional methods for road and airport pavement analyses, such as BISAR and GAMES, were developed based on a cylindrical coordinate system. Because of the loading symmetry due to the assumption that a circular uniformly distributed load ...Read more
Author:Phasha, MJ; Ngoepe, PE; Chauke, HR; Pettifor, DR; Nguyen-Mann, DDate:Jun 2010The first principles pseudopotential calculations based on the PerdeweBurkeeErnzerhof (PBE) form of generalized gradient approximation (GGA) within density functional theory (DFT) have been utilized to investigate the structural and elastic ...Read more
Author:Oberholster, Paul J; Botha, A-M; Myburgh, JGDate:Nov 2009The paper highlights results that show a potential shift in certain phytoplankton communities against a background of eutrophication, the authors predict an increase in blooms of cyanophytes and poisoning incidences by previously non dominant ...Read more
Author:Le Maitre, David C; Milton, SJ; Jarmain, C; Colvin, C; Saayman, I; Vlok, JHJDate:Jul 2007There is growing acknowledgement of the dependence of human society on ecosystem services and of the fact that service delivery is being compromised by human impacts on ecosystems. This paper describes the linkage between landscape-scale ...Read more
Author:Blettler, MCM; Amsler, ML; Eberle, EG; Szupiany, R; Oberholster, Paul JDate:Dec 2016Interdisciplinary research in the fields of ecohydrology and ecogeomorphology is becoming increasingly important as a way to understand how biological and physical processes interact with each other in river systems. The objectives of the ...Read more
Author:Makute, T; Mwangama, J; Lysko, Albert ADate:Nov 2021The mobile networking industry has proposed the adoption of network function virtualisation in the various components of the core network, including the Gi-LAN which houses a large set of network functions. However, virtualisation introduces ...Read more
Author:De Koning, AJDate:Jan 2006Muscle of rudderfish (centrolophus niger), or black ruff, a rare mesopelagic fish caught in the South Atlantic, was found to contain 19.3% total lipids. The major part of the lipids (~70%) was unusual in not yielding glycerol but non-saponifiable ...Read more
Author:Finnegan, T; Steenkamp, PA; Piater, LA; Dubery, IADate:22 Sep 2016Lipopolysaccharides (LPSs), as MAMP molecules, trigger the activation of signal transduction pathways involved in defence. Currently, plant metabolomics is providing new dimensions into understanding the intracellular adaptive responses to ...Read more
Author:Finnegan, T; Steenkamp, Paul A; Piater, LA; Dubery, IADate:Sep 2016Lipopolysaccharides (LPSs), as MAMP molecules, trigger the activation of signal transduction pathways involved in defence. Currently, plant metabolomics is providing new dimensions into understanding the intracellular adaptive responses to ...Read morecb
Author:Maduray, K; Karsten, AEDate:Jan 2010Photodynamic therapy (PDT) uses a drug termed a photosensitizer (PS), light (laser) of an appropriate wavelength and molecular oxygen (tissue) to elicit cell death of cancer cells. The objective of this study was to evaluate the enhancement ...Read more
Author:Gummow, RJ; Liles, DC; Thackeray, MMDate:Dec 1993Orthorhombic LiMnO2 products, synthesised by the reaction of gamma-MnO2 and LiOH in argon at 600-620 degrees C using carbon as a reducing agent, have been evaluated as electrode materials in lithium cells. Products that contained a minor ...Read more
Author:Pelders, Jodi L; Nelson, GDate:Apr 2018Poor living conditions are a consequence of the history of the South African mining industry (SAMI), despite legislation having been implemented to attempt to address this challenge. This paper describes the living conditions of mine workers ...Read more
Author:Coetzee, M; Goss, H; Meiklejohn, C; Mlangeni, PDate:May 2014The purpose of this article is to introduce the development of the Regional Spatial Profiler – a spatial information and modelling platform – for the Department of Science and Technology. Based on the steps set out in action research, this ...Read more
Author:Coetzee, H; Du Toit, I-M; Herselman, Martha EDate:Aug 2012The aim of this study is to understand the key features of five selected Living Labs (LLs) in South Africa, namely Siyakula LL, Limpopo LL, North-West LL, SAP Research LLs and Reconstructed LL. LLs do have the potential to address Africa’s ...Read more
Author:Magagula, L; Gagliardi, M; Naidoo, Jerolen; Mhlanga, MusaDate:Aug 2017Termed 'master gene regulators' long ncRNAs (lncRNAs) have emerged as the true vanguard of the 'noncoding revolution'. Functioning at a molecular level, in most if not all cellular processes, lncRNAs exert their effects systemically. Thus, ...Read more
Author:Shibayama, Y; Fanucchi, Stephanie; Magagula, L; Mhlanga, MusaDate:May 2014Recent functional studies have unveiled the significant role chromatin topology plays in gene regulation. Several lines of evidence suggest genes access necessary factors for transcription by forming chromatin loops. A clearer picture of the ...Read more