Author:Chidembo, AT; Aboutalebi, SH; Konstantinov, K; Jafta, CJ; Liu, H; Ozoemena, KIDate:Jan 2014We report the use of spray pyrolysis method to synthesize high surface area (BET surface area of 139 m2g-1) self–organized, micron sized urchin-like composites made up of reduced graphene oxide and needle-shaped manganese oxide (rGO-Mn2O3/Mn3O4). ...Read more
Author:Labuschagne, Philip W; Kazarian, SG; Sadiku, REDate:May 2011A study of the H-bonding between poly(ethylene glycol) (PEG) and polyvinylpyrrolidone (PVP) in the presence of supercritical carbon dioxide at various temperatures, pressures, different M(w) of PEG and PVP and different PEG/PVP ratios is ...Read more
Author:Watson, BP; Kuijpers, J; Miovsky, PDate:Dec 2009The Bushveld platinum group metal deposits in South Africa are the largest in the world. These deposits occur as two distinct stratiform tabular ore bodies and strike for many hundreds of kilometres. Mining is extensive, with depths ranging ...Read more
Author:Israel, S; Rosenov, A; Tredoux, G; Jovanovic, NebojsaDate:Sep 2011Groundwater pollution by nitrate is a known problem which occurs all around the world. In its nitrate (NO3) and other forms, nitrogen can move through soil into groundwater. Nitrogen can also contribute to surface water quality problems. In ...Read more
Author:Motaung, DE; Moodley, MK; Manikandan, E; Coville, NJDate:2010Single-walled carbon nanotubes (SWCNTs) are unique one-dimensional nanostructure with extraordinary electronic, thermal, optical, and mechanical properties. These properties make SWCNTs suitable materials for a wide range of advanced technological ...Read more
Author:Ilgner, HJ; Goosen, P; Dumbu, SDate:Sep 2010Methods to detect the flow condition at the pipeline invert are reviewed. New results of a small heated plate inserted into a non-metallic pipe are presented. This thermal method is based on mini-heaters and can detect erratic flow behaviour ...Read more
Author:Petrick, AJDate:1954The fuel and power supplies developed reasonably uniformly with the demand in the Union of South Africa up to about 1945. Although the coal industry made adequate provision for future requirements and has even now adequate potential production ...Read more
Author:Fouché, Gerda; Cragg, GM; Pillay, P; Kolesnikova, NI; Maharaj, VJ; Senabe, JVDate:Oct 2008A total of 7500 plant extracts were screened for in vitro anticancer activity against a panel of three human cell lines (breast MCF7, renal TK10 and melanoma UACC62). Extracts were classified into four categories based on their total growth ...Read more
Author:Booysen, L; Semete-Makokotlela, Boitumelo; Kalombo, Lonji; Swai, H; Kotzé, AFDate:01 Sep 2010It has been postulated that antituberculosis drugs encapsulated in polymeric nanoparticles are able to control the release of these drugs in vivo. These biodegradable polymers facilitate sustained/controlled release by means of degradation ...Read more
Author:De Wet, H; Fouché, Gerda; Van Heerden, FRDate:20 Jul 2009The cytotoxicity of crude alkaloid extracts obtained from the leaves and rhizomes of all the South African members of the family Menispermaceae (seven genera and 13 species) was tested against MCF7 (breast), UACC62 (melanoma) and TK10 (renal) ...Read more
Author:Ndlovu, G; Fouché, Gerda; Tselanyane, MDate:Sep 2013Aging is an inevitable process for all living organisms that increases reactive oxygen species leading to the dysregulatian of extracellular and intracellular homeostasis, ultimately resulting in the skin not functioning optimally. The level ...Read more
Author:Ndlovu, G; Fouché, Gerda; Tselanyane, M; Cordier, W; Steenkamp, VDate:Nov 2013Aging is an inevitable process for all living organisms. During this process reactive oxygen species generation is increased which leads to the activation of hyaluronidase, collagenase and elastase, which can further contribute to skin aging. ...Read more
Author:Yavari, N; Dam, JS; Antonsson, J; Wardell, K; Andersson-Engels, SDate:Sep 2005Knowledge of the optical properties of tissues can be applied in numerous medical and scientific fields, including cancer diagnostics and therapy. There are many different ways of determining the optical properties of turbid media. The paper ...Read more
Author:Truter, JC; Van Wyk, JH; Newman, Brent KDate:Dec 2015Various waterborne anthropogenic contaminants disrupt the endocrine systems of wildlife and humans, targeting reproductive pathways, among others. Very little is known, however, regarding the occurrence of endocrine disruptive activity in ...Read more
Author:Wepener, IDate:Oct 2012This presentation focuses on the manufacturing of the electrospun scaffold and the in vitro testing of this scaffold by making use of human cells. This scaffold is a possible candidate for repair and reconstruction of bone tissue.Read more
Author:Maduray, K; Karsten, A; Odhav, B; Nyokong, TDate:May 2011A series of water-soluble tetrasulfonated metallophthalocyanines (MPcs) dyes have been studied to be used as a drug or photosensitizer (PS) in photodynamic therapy (PDT) for the treatment of cancers. During PDT the PS is administrated ...Read more