Author:Roro, Kittessa T; Tile, N; Mwakikunga, Bonex W; Yalisi, B; Forbes, ADate:May 2012Multiwall carbon nanotubes (MWCNTs)/nickel oxide (NiO) nanocomposites were successfully prepared by a sol–gel process and coated on an aluminium substrate. The MWCNTs were chemically functionalized and then added into NiO alcogels, and magnetic ...Read more
Author:Du Preez, M; Mcguigan, K; Conroy, RMDate:Nov 2010This 1-year randomized controlled trial investigated the effect of SODIS of drinking water and motivation on the incidence of dysentery and nondysentery diarrhea among children of age 6 months to 5 years living in periurban communities in ...Read more
Author:Klein, Peter; Zoschke, T; Dos Santos, R; Surridge, KDate:Nov 2019Solar thermal technologies have the potential to provide clean and low cost thermal energy to South African industries. Case studies of “real world” processes are critical to encourage the uptake of these solar thermal technologies and ...Read more
Author:Basappa Ayanna, Manjunath; Pratt, Lawrence E; Roro, Kittessa TDate:Nov 2021A commercial 3ph 25 kW inverter is characterised at the Smart Grid Laboratory, CEA-INES in accordance with IEC/EN 61727 and EN50530. The minimum, nominal and maximum power point tracking power conversion efficiency for normalized power levels ...Read more
Author:Aderemi, BA; Chowdhury, SPD; Olwal, T; Abu-Mahfouz, Adnan MIDate:Sep 2017The huge costs of operating a mobile cellular base station, and the negative impact of greenhouse gasses on the environment have made the solar PV renewable energy source a sought after. In addition to cost and environmental factor, abundant ...Read more
Author:Pratt, Lawrence E; Ayanna, Manjunath Basappa; Wright, Jarrad G; Fourie, RuanDate:Jul 2021The Council for Scientific and Industrial Research (CSIR), an entity of the Department of Science and Innovation, is a national scientific council with headquarters in Pretoria, South Africa. The CSIR Pretoria campus owns and operates 2 MW ...Read more
Author:Bischof-Niemz, ST; Mushwana, Crescent; Koopman, Stephen JDate:Jun 2016The conventional approach to assess and integrate renewable energy (RE) resource individually has its own limitations especially in areas where different energy resources get integrated to supply power to the grid. In South Africa, the Solar ...Read more
Author:Katumba, G; Makiwa, G; Olumekor, L; Forbes, ADate:Jan 2008It is possible to design an optical material, through control of the substrate and coatings, to absorb a large fraction of the solar spectrum and to emit very little radiation energy in the near and far infra-red wavelength range. This requires ...Read more
Author:Wright, C; Albers, PDate:Sep 2011While some sun exposure induces a sense of well-being and synthesis of vitamin D excess sun exposure has been associated with skin cancer, immune suppression and ocular cataracts. In South Africa, approximately 30% of all histologically-diagnosed ...Read more
Author:Wright, CYDate:01 Sep 2010On average, places in South Africa experience between 6 and 12 hours of sunshine per day. Of course, on heavily cloudy and rainy days, less sunshine reaches us, but generally we enjoy a frequent supply of blue skies and bright sun. So, what ...Read more
Author:Wright, GY; Griffith, DDate:Sep 2015Solar ultraviolet radiation (UVR) data for matching time periods between November 2014 and February 2015 were recorded by two instruments, namely a UVR biometer and a Davis UVR sensor, and their data were compared. Several checks and challenges ...Read more
Author:McGuigan, KG; Conroy, RM; Mosler, H-J; Du Preez, M; Ubomba-Jaswa, Eunice; Fernandez-Ibanez, PDate:Oct 2012Solar water disinfection (SODIS) has been known for more than 30 years. The technique consists of placing water into transparent plastic or glass containers (normally 2 L PET beverage bottles) which are then exposed to the sun. Exposure times ...Read more
Author:White, D; Taverner, BC; Coville, NJ; Wade, PWDate:14 Jun 1995The values of the solid angles Omega for a range of commonly encountered ligands in organometallic chemistry (phosphines, phosphites, amines, arsines and cyclopentadienyl rings) have been determined. The solid angles were derived from a single ...Read more
Author:Mo, L; Zheng, HaitaoDate:Nov 2020In generally, the thermal behaviour of cathode and electrolyte are the major concerns for the safety of lithium-ion battery, In contrast to rare attention on thermal effects of anode materials. In this work, Li4Ti5O12/polyaniline (PANI@LTO) ...Read more
Author:Mo, L; Zheng, HaitaoDate:Nov 2020In generally, the thermal behaviour of cathode and electrolyte are the major concerns for the safety of lithium-ion battery, In contrast to rare attention on thermal effects of anode materials. In this work, Li4Ti5O12/polyaniline (PANI@LTO) ...Read more
Author:Noble, RGDate:Jun 1976The importance of solid wastes management in environmental pollution control cannot be over-emphasised. Increased socio-economic development in South Africa has brought with it increasing volumes of urban, industrial and agricultural wastes, ...Read more
Author:Sha, G; Moller, H; Stumpf, WE; Xia, JH; Govender, G; Ringer, SPDate:Jan 2012The solute nanostructures formed in the primary a-Al grains of a semi-solid metal cast Al–7Si–0.6Mg alloy (F357) during ageing at 180°C, and the age-hardening response of the alloy, have been systematically investigated by transmission electron ...Read more