Author:Ojijo, Vincent O; Sadiku, ERDate:Jun 2017This chapter discusses the strategies employed in enhancing the wear performance of polyethylene (PE) and polypropylene (PP). A brief overview of the polyolefins, their structure, and tribological characteristics and applications is presented. ...Read more
Author:Landman, WA; Marx, E; Park, R; Landman, S; Lazenby, MDate:Oct 2011Whilst climate change projections are suggesting an increase in temperature extremes over southern Africa, these extremes are not expected to happen every day or even every summer. Operational weather and seasonal forecasts can indicate whether ...Read more
Author:Gqola, PDDate:Aug 2006The only second lesbian conference in South Africa, and the first that brings together so many people from the LGBTi community. When women make history do not usually consciously reflect on this as what women are doing. Our foremothers did ...Read more
Author:Oosthuizen, Dina N; Motaung, David E; Swart, HCDate:Aug 2018The strategy for the synthesis of metal oxide nanostructured based sensors that operate at room temperature with higher sensitivity and selectivity facilitates the forecasts towards low cost and power consumption gas sensors which will be ...Read more
Author:Oosthuizen, Dina N; Motaung, David E; Swart, HCDate:Aug 2019The strategy for the synthesis of metal oxide nanostructured based sensors that operate at room temperature with higher sensitivity and selectivity facilitates the forecasts towards low cost and power consumption gas sensors which will be ...Read more
Author:Lain, Elisabeth J; Smith, Marie EDate:Jan 2024A new age of satellite remote sensing is upon us. High-tech sensors capable of imaging the earth at over 100 spectral wavebands are now a reality. These sensors, known as hyperspectral radiometers, capture very fine spectral features of the ...Read more
Author:Pandelani, Thanyani A; Reinecke, John D; Beetge, FDate:01 Sep 2010This study presents the results of a practical investigation into the robustness of the newly developed Military Extremity (MiL-Lx) lower leg, as compared to the Hybrid III (HIII) lower leg, with respect to repeatability and reproducibility ...Read more
Author:Oosthuizen, SJDate:Mar 2011This article explores the Fray Farthing Chen (FFC) Cambridge process, a novel method for the electrochemical deoxidation of metal oxides in molten salt, discovered at the University of Cambridge in 1997. The process was hailed as a highly ...Read more
Author:Oosthuizen, SJDate:Oct 2010This article explores the Fray Farthing Chen (FFC) Cambridge Process, a novel method for the electrochemical de-oxidation of metal oxides in molten salt, discovered at the University of Cambridge in 1997. The process was hailed as a highly ...Read more
Author:Israel, S; Engelbrecht, P; Tredoux, G; Fey, MVDate:2009Batch experiments were performed to denitrify groundwater using sawdust as a carbon source at Marydale, South Africa. Alkalinity, pH, Electrical Conductivity, nitrate, nitrite, ammonia, SO42-, heterotrophic plate count (HPC), dissolved organic ...Read more
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