Author:Heim, FO; Clark, DDate:1977In view of the desire to conserve oil products, it was decided to attempt to use ethyl alcohol in the place of petrol in a duel-fuel operated diesel engine. Apart from the change of fuel, test conditions have been as described in Report No. ...Read more
Author:Wen, L; Wu, Z; Luo, H; Song, R; Lia, FDate:2015Spinel Li(sub4)Ti(sub5)O(sub12) has become an alternative material to replace graphite anodes in terms of solving safety issues and improving battery life-time. Unfortunately, as Li(sub4)Ti(sub5)O(sub12) is an insulator, the low electrical ...Read more
Author:Chinecherem, A; Kebede, Mesfin ADate:Nov 2021The need for increased energy security in the nation has diverted energy sources from conventional forms to the use of fuel cells. Fuel cells are generally accepted for electricity generation due to their increased conversion efficiency, ...Read more
Author:Shela, E; Liu, F; Wang, T; Farrag, M; Liu, J; Yacout, N; Kebede, Mesfin A; Sharma, N; Fan, LZDate:Apr 2020With a low cost and high volumetric capacity, rechargeable magnesium batteries (RMBs) have emerged as promising candidates for post-lithium ion batteries. The kinetically sluggish Mg2+ insertion/extraction in the host lattice and the ...Read more
Author:Gonçalves, DPDate:Sep 2015The standard definition (ISO 15288, 2008) of the concept of a system is not complete and is the definition of a closed system. Such a definition is inadequate for systems engineering. A use-based definition is proposed which spans the open-closed ...Read more
Author:Steyn, JM; Odendaal, JW; Joubert, JDate:2009Paper presents a dual-band dual-polarized antenna array design for WLAN applications. Four double-dipole elements are orthogonally interleaved to facilitate operation in both the standard WLAN frequency bands (IEEE 802.11b and IEEE 802.11a) ...Read more
Author:Nofar, M; Salehiyan, Reza; Ciftci, U; Jalali, A; Durmus, ADate:Feb 2020In this study, binary and ternary immiscible blends of polylactide (PLA) with poly[(butylene adipate)-co-terephthalate] (PBAT) and poly[(butylene succinate)-co-adipate] (PBSA) were prepared through an injectionmolding (IM) process. Blend ...Read more
Author:Paige-Green, PDate:Feb 2007One of the most important materials for the construction of high quality pavement layers in roads in South Africa is the Basic Crystalline group of rocks. The major deposits of these materials are associated with the dolerites and basaltic ...Read more
Author:Van Rensburg, NJJDate:Dec 1972The use of titanium tetrachloride and antimony oxide as flame-retarding agents for cotton was investigated.Read more
Author:de Wet, p; Mather, A; Theron, ADate:Oct 2010This presentation provides a short background and history of the Durban Bay monitoring area, and then progresses to providing maps of the areas monitored. Beach survey data is discussed, and the effects of sandmining touched on.Read more
Author:Hole, BJ; Von Glehn, HFDate:Mar 1998The project was directed towards bord and pillar working by mechanised miners operating in larger section roadways, where the problem of scrubber capture tends to be greatest owing to the limited size of the zone of influence around exhaust ...Read more
Author:Belle, BKDate:Feb 2002This report describes research project COL 807 which was formulated to find ways of keeping down the dust in thick-seam wall operations to concentration levels of less than 5 mg/m3 and to minimize the dust exposure of workers while maintaining ...Read more
Author:Bembe, M; Dludla, Angeline G; Ngwenya, D; Mekuria, FissehaDate:Jul 2015DVB-NGH (Digital Video Broadcasting-Next Generation Handheld) is the next generation technology for mobile TV broadcasting. It integrates both satellite and terrestrial techniques, which is vital in supporting rich media content for mobile ...Read more
Author:Wall, K; Manus, A; Moodley, K; Boshoff, L; Ottermann, ADate:May 2008This paper describes the steady progress that the Department of Water Affairs and Forestry (DWAF) has been making with formulating a national water services infrastructure asset management (IAM) strategy. A "scan" of the state of water services ...Read more
Author:Cummings, FDate:Nov 2009This presentation gives an overview of the background of dye solar cell research, specifically the CSIR dye solar cell research, and collaborations and links.Read more
Author:Cummings, FDate:09 Nov 2009This presentation gave an overview of the background of dye solar cell research, specifically the CSIR dye solar cell research, and collaborations and links.Read more
Author:Le Roux, Lukas JDate:Feb 2006Various institutions are doing research on photovoltaics in South Africa. Although the CSIR is the only one that does research on DSC's there is significant support from the different universities. In the presentation a short overview of the ...Read more
Author:Le Roux, Lukas J; Hietkamp, S; Cummings, FDate:Nov 2008An attractive and cheaper alternative to siliconbased photovoltaic (PV) cells for the conversion of solar light into electrical energy is to utilise dyeadsorbed, large-band-gap metal oxide materials such as TiO2 to absorb the solar light. ...Read more
Author:Le Roux, Lukas J; Arendse, C; Hietkamp, S; Knoesen, DDate:Jul 2005A novel system that harnesses solar energy is the nano-crystalline TiO dye-sensitised solar cell (DSC), in conjunction with several new concepts, such as nanotechnology and molecular devices. An efficient and low-cost cell can be produced by ...Read more
Author:Le Roux, Lukas J; Arendse, C; Hietkamp, SDate:Feb 2006As fuel sources become depleted, there is an increasing need to turn to alternative sources of energy. Of particular interest, especially in southern Africa, is solar energy, since it is clean and abundant. A novel system that harnesses solar ...Read more