Author:Nchabeleng, T; Cheng, Po-Hsun; Oberholster, Paul J; Botha, A-M; Smit, WJ; Luus-Powell, WJDate:Dec 2014The effects of a decomposing cyanobacteria bloom on water quality and the accumulation of microcystin-LR equivalent toxin in fish at Loskop Dam were studied in May 2012. Enzyme-linked immunosorbent assay [ELISA] was used to confirm the presence ...Read more
Author:Land, KJ; Mbanjwa, M; Korvink, JGDate:Sep 2014We present a novel use for channel structures in microfluidic devices, whereby two two-phase emulsions, one created on-chip, the other off-chip, are rapidly mixed with each other in order to allow for the coalescence of one emulsion with the ...Read more
Author:Potgieter, S; Land, K; Kotze, L; Sparrow, RDate:2010Microfluidics is a multi-disciplinary field that deals with the behaviour, control and manipulation of fluids constrained to sub-millilitre volumes. It is proving to be a useful tool for biological studies, affording advantages such as reduced ...Read more
Author:Potgieter, S; Land, KJ; Sparrow, RW; Coetzee, RDate:Oct 2008Microfluidics is a multi-disciplinary field that deals with the behaviour, control and manipulation of sub-millilitre fluid volumes. It is proving to be a useful tool for biological studies, affording advantages such as reduced cost, faster ...Read more
Author:Popoola, API; Ochonogor, OF; Abdulwahab, M; Pityana, Sisa L; Meacock, CDate:Dec 2012Surface modification of titanium alloy (Ti-6Al-4V) was made using a Rofin Sinar 4 kW Nd: YAG laser. A laser multi-track 50% overlapping process was employed to produce Zr and Zr-TiC metal matrix composite (MMC) coatings on Ti6Al4V substrate. ...Read more
Author:Labuschagne, Philip W; Naicker, B; Kalombo, LonjiDate:Feb 2016The purpose of this investigation was to determine whether shellac, a naturally occurring material with enteric properties, could be processed in supercritical CO2 (sc-CO2) using the particles from gas saturated solution (PGSS) process and ...Read more
Author:Buddoo, SR; Siyakatshana, Njabulo; Pongoma, BDate:Nov 2008Microreactors are miniature reactors for carrying out chemical reactions. CSIR Biosciences has been investigating the production of biodiesel using various sources of vegetable oils, for example, soya, sunflower, canada, Jatropha, palm and ...Read more
Author:Moodie, BDate:1963The first observations carried out on the coke samples were of a quantitative nature, but the desirability of evaluating the coke quantitatively soon became evident.Read more
Author:Moodie, BDate:1967Samples consisting of various specimens of char prepared at e Klippoortjie plant from No. 5 and No. 4 seam coal were submitted with the request that the Institute should ascertain, if possible, whether the agglomeration of the particles due ...Read more
Author:Moodie, BDate:1954Records show that the first microscopic observations were carried out on coal in the year 1830 by Lindley. The apparatus he used was crude and his work was mostly confined to the examination of fossilized leaves found in certain coals.Read more
Author:Tlotleng, Monnamme; Akinlabi, E; Shukla, M; Pityana, Sisa LDate:Mar 2015Hydroxyapatite (HAP) is the most researched calcium phosphate material in the field of biomaterials to be used for bone re-engineering applications; given its attractive properties. Plasma spraying is the best available industrial method that ...Read more
Author:Tlotleng, Monnamme; Akinlabi, E; Shukla, M; Pityana, Sisa LDate:Feb 2014Bio-composite coatings of 20 wt.%, HAP and 80 wt.%, HAP were synthesized on Ti-6Al-4V substrates using LACS technique. The coatings were produced with a laser power of 2.5 kW, powder-laser spot trailing by 5 s. The coatings were analyzed for ...Read more
Author:Mutombo, K; Rossouw, P; Govender, GDate:Oct 2009One of the most effective ways of improving the fuel consumption and hence reducing the environmental impact of transport vehicles is via reduction in mass. This has resulted in the increased use of magnesium (Mg) to reduce the mass of vehicles. ...Read more
Author:Moshokoa, Nthabiseng; Raganya, Mampai L; Obadele, BA; Machaka, Ronald; Makhatha, MEDate:Oct 2020β-type titanium alloys are acquiring research interest in orthopaedic applications because of their exceptional properties such as moderate strength, good biocompatibility and corrosion resistance, high ductility and low elastic modulus. The ...Read more
Author:Kabongo, GL; Mhlongo, Gugu H; Malwela, T; Mothudi, BM; Hillie, KT; Dhlamini, MSDate:Apr 2014Un-doped and Tb(Sup3+) doped ZnO nanocrystals with different concentrations of Tb(Sup3+) were synthesized by a sol–gel method and their photoluminescence (PL) properties were investigated. The successful incorporation of Tb(sup3+) ions with ...Read more
Author:Adesina, OS; Popoola, API; Pityana, Sisa L; Oloruntoba, DTDate:Nov 2017The enhancement of the tribological properties of titanium (Ti-6Al-4V) has been the subject of wide range research over the years. The constraints associated with Ti-6Al-4V in severe tribological conditions due of its low hardness and poor ...Read more
Author:Olakanmi, EO; Sepako, M; Morake, J; Hoosain, Shaik E; Pityana, Sisa LDate:Dec 2018This study examines the dependence of microstructural characteristics, crack frequency and diffusion kinetics of functionally graded (FGM) titanium aluminide coatings reinforced with TiC on laser energy density (LED). Samples deposited on a ...Read more