Author:Nwany, AC; Kebede, Mesfin A; Ezema, FIDate:Dec 2019The quest for mobile energy storage has revolutionized research in energy storage, especially in rechargeable batteries. Presently, lithium-ion batteries dominate the market. They are widely used in products ranging from consumer electronics ...Read more
Author:Mhlongo, Gugu H; Ntwaeaborwa, OM; Dhlamini, MS; Swart, HC; Hillie, KTDate:Oct 2010The successful incorporation of ZnO nanoparticles in Pr3+-doped SiO2 using a
sol–gel process is reported. SiO2:Pr3+ gels, with or without ZnO nanoparticles,
were dried at room temperature and annealed at 600 °C. On the basis of the
X-ray ...Read more
Author:Schetters, T; Bishop, R; Crampton, Michael C; Kopácek, P; Lew-Tabor, ADate:Feb 2016A meeting sponsored by the Bill & Melinda Gates Foundation was held at the Avanti Hotel, Mohammedia, Morocco, July 14–15, 2015. The meeting resulted in the formation of the Cattle Tick Vaccine Consortium (CATVAC).Read morecb
Author:Turner, PADate:Aug 1987This report discusses the occurrence of falls of ground in strike gullies. Falls of hangingwall over strike gullies on the up-dip side of strike stabilizing pillars in longwall mining systems were investigated. Gullies were examined in both ...Read more
Author:Van der Merwe, JN; Van Vuuren, JJ; Butcher, R; Canbulat, IDate:Aug 2001The main objective of this research was to determine the causes of falls of roof in South African collieries. Sixteen major roof falls were investigated in detail and their causes established. This data was supplemented by mapping a large ...Read more
Author:Ackermann, ER; Grobler, TL; Kleynhans, W; Olivier, JC; Salmon, BP; Van Zyl, AJDate:Sep 2012We use Cavalieri’s principle to develop a novel integration technique which we call Cavalieri integration. Cavalieri integrals differ from Riemann integrals in that non-rectangular integration strips are used. In this way we can use single ...Read more
Author:Grobler, TL; Ackermann, ER; Van Zyl, AJ; Olivier, JCDate:Oct 2011The authors use Cavalieri's principle to develop a novel integration technique which they call Cavalieri integration. Cavalieri integrals differ from Riemann integrals in that non-rectangular integration strips are used. In this way they can ...Read more
Author:Glaser, Daniel; Polese, CDate:Sep 2017Laser shock peening (LSP) technology is a laserinduced shock process implemented as a surface enhancement technique to introduce beneficial compressive residual stresses into metallic components. The process employs water to confine and enhance ...Read more
Author:Auret, JG; Damm, OFRA; Wright, GJ; Robinson, FPADate:Dec 1993Cavitation erosion tests were carried out in tap water on aluminium and copper samples in a rotating disk cavitations test apparatus, to study the effect of water temperature on cavitation dynamics and cavitation erosion. A shift in the ...Read more
Author:Landman, WA; Engelbrecht, F; Park, RDate:Oct 2011The procedure to build an optimised seasonal prediction system that includes the prediction of global SST to force the CCAM is explained.Read more
Author:Lebea, Phiyani J; Bode, ML; Mathiba, K; Brady, DDate:Jun 2007The acyclic nucleoside phosphonates such as cidofovir, adefovir and tenofovir have proved to be effective in vitro (cell culture systems) and in vivo (animal models, clinical studies) against a wide variety of DNA virus and retrovirus infections. ...Read more
Author:Du Plessis, A; Theron, J; Berger, E; Louw, MEDate:Oct 2006N-terminal sequencing gave rise to homology to flagellin protein, product of the hag gene. protein, product of the hag gene. Gene was cloned by using degenerate primers and inverse PCR. The gene sequence as well as the up- and down- stream ...Read more
Author:Chunilall, Viren; Wesley-Smith, J; Bush, TDate:Nov 2006Dissolving pulp is the end-product of acid-bisulphite pulping and bleaching processes, during which almost all non-cellulosic wood components are removed to produce dissolving pulp with final a cellulose purity of up to 96%. Dissolving pulp ...Read more
Author:Chunilall, Viren; Wesley-Smith, J; Bush, TDate:Nov 2006The work presented will report on the use of AFM to study the CFA characteristics of dissolving pulp of a clone of Eucalyptus grown in compartments with contrasting growth rates (low and high), at different stages of the pulping process (solid ...Read more