Author:Wright, C; John, JDate:Jan 2009Air pollution in South Africa is a serious environmental health threat, particularly in urban and peri-urban metropolitan areas, but also in low income settlements where indoor air pollution from domestic fuel use is a concern. A healthy ...Read more
Author:Seid, ER; Majozi, TDate:Jul 2014Energy saving is becoming increasingly important in batch processing facilities. Multipurpose batch plants have become more popular than ever in the processing environment due to their inherent flexibility and adaptability to market conditions, ...Read more
Author:Nyoni, NMB; Grab, S; Archer, Emma RMDate:Apr 2018Compared to other types of livestock, poultry is widely owned by rural households in developing countries. Rural poultry production is not a primary agricultural activity per se, but rather serves to supplement other farming activities in ...Read more
Author:Arthur, Nana KK; Siyasiya, CW; Pityana, Sisa L; Tlotleng, MonnammeDate:Jan 2022During the laser metal deposition additive manufacturing processing of Ti6Al4V ELI alloy, the parts produced were exposed to high levels of thermal gradients, which resulted from rapid heating and cooling rates in the material. This had an ...Read more
Author:Malibo, Pretrus M; Makgwane, Peter R; Baker, PGLDate:Jul 2021Herein we report on the catalytic activity of hetero-mixed TiO2-SnO2 nano-oxide catalyst for the selective liquidphase oxidation of furfural to maleic acid using H2O2 oxidant. The high surface area and strong interaction of the two oxides ...Read more
Author:Mkhize, NM; Sithole, Bishop B; Ntunka, MGDate:Jun 2015The present study indicates that solid acid catalysis of crude tall oil (CTO) over a WO3/ZrO2 catalyst is effective in converting the CTO fatty acids components into biodiesel in high yield. Preparation of the catalyst by an impregnation ...Read more
Author:Mamuru, SA; Ozoemena, KIDate:May 2010Electron transfer and oxygen reduction dynamics at nanostructured iron(II) phthalocyanine/multi-walled carbon nanotubes composite supported on an edge plane pyrolytic graphite electrode (EPPGE-MWCNT-nanoFePc) platform have been reported. All ...Read more
Author:Nkosi, D; Pillay, J; Ozoemena, KI; Nouneh, K; Oyama, MDate:Jan 2010The electron transfer dynamics and electrocatalytic behaviour of ferrocene-terminated self-assembled monolayers (SAMs), co-adsorbed with single-walled carbon nanotubes (SWCNTs) on a gold electrode, have been interrogated for the first time. ...Read more
Author:Bohlin, C; Jonsson, LJ; Roth, Robyn L; Van Zyl, WHDate:Sep 2006Laccases are copper-containing phenol-oxidizing enzymes that are useful in many different applications, for example in lignocellulose processing and textile industry. Efficient and convenient systems for heterologous expression are needed for ...Read more
Author:Mavuso, MA; Makgwane, Peter R; Ray, Suprakas SDate:Apr 2020Herein, we report the enhanced photocatalytic activity of heterostructured CeO2 nanocatalysts interfaced with Cu, Co, Ni, Mn, and Fe metal oxides. The CeO2 catalysts exhibited an enhanced red shift in the visible-light response compared to ...Read more
Author:Malibo, Petrus M; Makgwane, Peter R; Baker, PGDate:Jun 2020In this paper, we report on the synthesis of heterostructured V2O5/SnO2 nanocatalysts with varying vanadium metal loadings of 5–30 wt%. The catalytic performance of the designed catalysts was evaluated in the oxidation reaction of furfural ...Read more
Author:Grobler, J; Engelbrecht, AP; Kendall, G; Yadavallie, VSSDate:Apr 2015This paper expands on the concept of heuristic space diversity and investigates various strategies for the management of heuristic space diversity within the context of a meta-hyper-heuristic algorithm in search of greater performance benefits. ...Read more
Author:Andrew, JE; Grzeskowiak, V; Kerr, IDate:Oct 2009Hexenuronic acid (HexA) is formed during kraft pulping by the conversion of 4-O-methyl-glucuronic acid groups in strong alkali conditions. HexA can be removed from the pulp by including an acid hydrolysis (A) stage in the bleaching sequence. ...Read more
Author:Du Preez, Ilse; Richter, Wim; Van Papendorp, D; Joubert, ADate:2018Much research over the past five decades has focussed on the repair and replacement of bone. Recently, the research focus has shifted to nanotechnology since it provides a platform from which to alter and possibly improve materials’ properties. ...Read more
Author:Saasa, Valentine R; Malwela, Thomas; Lemmer, Yolandy; Beukes, M; Mwakikunga, Bonex WDate:Oct 2020Hierarchical nanostructured Co-doped WO3 with carbon as template has been successfully synthesised through facile sol-gel method. The synthesised Co-doped WO3 was characterized by X-ray diffraction, Scanning electron microscopy, Transmission ...Read more
Author:Raju, Kumar; Ozoemena, KIDate:Dec 2015High-performance electrochemical capacitors will drive the next-generation portable, flexible and wearable electronics. Unlike the conventional all-carbon supercapacitors (electric double layer capacitors, EDLC) with high power but poor energy ...Read more