Author:George, BPA; Kumar, Neeraj; Abrahamse, H; Ray, Suprakas SDate:Sep 2018Metallic nanoparticles (NPs) especially silver (Ag) NPs have shown immense potential in medical applications due to their distinctive physio-chemical and biological properties. This article reports the conjugation of Ag NPs with Rubus ...Read more
Author:Viljoen, GADate:1972The first apparatus operating on the principle of a change in the buoyant force with progressive settling was constructed along the following lines. A suitable shaped glass cylinder was suspended from one arm of a chemical balance so that it ...Read more
Author:Oberholster, Paul J; Botha, AM; Ashton, PJDate:Apr 2009Data generated during 12 field trips in 2006 were used to investigate possible changes in the biota communities of Lake Tswaing after a borehole was sunk in 1988/1989 near the centre of the crater lake. The Tswaing meteorite crater lake is a ...Read more
Author:Van Heerden, FR; Horak, RM; Maharaj, VJ; Vleggaar, R; Senabe, JV; Gunning, PJDate:Apr 2007Two new pregnane glycosides were isolated by fractionation of the dried stems of Hoodia gordonii. Their structures were determined as 3beta-[beta-D-thevetopyranosyl-(1→4)-beta-D-cymaropyranosyl-(1→4)-beta-D-cymaropyranosyloxy]-12beta-tigloy ...Read more
Author:Raab, GADate:1973The effects of mechanisation in coal mining were investigated by the NCB Scientific Department and some data were published in "second Symposium on Coal Preparation" 21st to 25th October, 1957, University of Leeds.Read more
Author:Manzi, MSD; Gibson, MAS; Hein, KAA; King, N; Durrheim, RJDate:Sep 2012As expensive as 3D seismic reflection surveys are, their high cost is justified by improved imaging of certain ore horizons in some of the Witwatersrand basin gold mines. The merged historical 3D seismic reflection data acquired for Kloof and ...Read more
Author:Ramkilowan, A; Griffith, DJDate:Sep 2015Ceilometers operating on several optical principles have been extensively applied to vertical visibility and cloud base measurements relating to aviation safety. The latest generation of laser time-of-flight backscatter ceilometers use the ...Read more
Author:Roberts, MBDate:Feb 1978In the chrome dying of wool by the afterchrome process, a saving of time has been achieved during the dyeing phase by commencing the dyeing at a higher temperature than normal and controlling exhaustion by means of a steady reduction in pH.Read more
Author:Broughton, EK; Brent, AC; Haywood, Lorren KDate:Dec 2012The current decision-making processes that are involved in Environmental Impact Assessments in the energy sector of South Africa suffer from, amongst others, the lack of coherence and the integration of the opinions of decision-makers in the ...Read more
Author:Pretorius, WB; Das, Sonali; Mostert, PJDate:Nov 2011In this paper the authors discuss the application of a classical nonparametric inference approach to analyse delta-pCO2 measurements from the Southern Ocean, which is a novel method to analysing data in this area, as well as comparing results ...Read more
Author:Linzer, LM; Watson, BP; Kuijpers, JS; Acheampong, EDate:Mar 2002Results of SIMRAC project GAP 223 showed that stabilizing pillar-related back area seismicity was not related to the width of the pillar, nor to the dip spans of the stopes supported by the pillar. Pillar associated seismicity initiated in ...Read more
Author:Brent, AC; Rogers, DEC; Ramabitsa-Siimane, TSM; Rohwer, Mark BDate:Sep 2006This paper focuses on the establishment of waste management systems that minimize infection risks in the context of sustainable development in the developing country situations. The Analytical Hierarchy Process (AHP), a known multi-criteria ...Read more
Author:Fassihi, A; Hunter, LawranceDate:Aug 2016Changes in Upland cotton fiber properties from lint to carded yarn, during full scale processing, were tracked, using a newly developed automatic yarn dismantler for dismantling short staple ring-spun yarns. Opening and cleaning increased ...Read more
Author:Fassihi, A; Hunter, LawranceDate:Nov 2014This paper reports on the application of a newly developed automatic yarn dismantler for dismantling short staple ring-spun yarns, to track changes in cotton fibre properties from lint to yarn, during processing on a miniature spinning line. ...Read more
Author:Duncker, Louiza C; Wilkinson, MDate:Nov 2014Sustainable development, which encompasses sustainable sanitation, is defined as development that is appropriate, has the specific objectives of accelerated growth, targeted interventions and community mobilisation to eradicate poverty and ...Read more
Author:Xing, B; Nelwamondo, Fulufhelo V; Battle, K; Gao, W; Marwala, TDate:Dec 2009This work focuses on the design and control of a novel hybrid manufacturing system: Reconfigurable Cellular Manufacturing System (RCMS) by using Artificial Intelligence (AI) approach. It is hybrid as it combines the advantages of Cellular ...Read more
Author:Asiru, OF; Dlamini, Moses T; Blackledge, MDate:Jun 2017Computer viruses have become complex and operates in a stealth mode to avoid detection. New viruses are argued to be created each and every day. However, most of these supposedly ‘new’ viruses are not completely new. Most of the supposedly ...Read more
Author:Ondiaka, M; Musee, N; Aldrich, C; Chimphango, ADate:Aug 2013The stability of engineered nanomaterials (ENMs) in the aquatic systems influences their eventual interactions with aquatic biota – and subsequently the observed toxic effects. Increasing data suggests that physicochemical properties of ENMs ...Read more