Author:Nel, JL; Roux, DJ; Abell, R; Ashton, PJ; Cowling, RM; Higgins, JV; Thieme, M; Viers, JHDate:Jun 2009Freshwater ecosystems and their associated biota are among the most endangered in the world. This, combined with escalating human pressure on water resources, demands that urgent measures be taken to conserve freshwater ecosystems and the ...Read more
Author:Alexandre, Kabamba B; Mufhandu, Hazel T; London, GM; Chakauya, E; Khati, MDate:Oct 2016The majority of HIV-1 infections occur via sexual intercourse. Women are the most affected by the epidemic, particularly in developing countries, due to their socio-economic dependence on men and the fact that they are often victims of gender ...Read more
Author:Mwakikunga, Bonex WDate:2014This review outlines, in great detail, the history of the phenomenon of ultrasonic nebulization of liquids since the discovery of such an effect by Michael Faraday and the explanation of the phenomenon by capillary wave mechanism and “cavitation” ...Read more
Author:Damm, O; Du Preez, WDate:2009Through focused investment by the CSIR, the South African Innovation Fund, the Automotive Industry Development Centre and the Department of Science and Technology over the past eight years, the national Light Metals Development Network has ...Read more
Author:Malherbe, Johan; Engelbrecht, FA; Landman, WADate:Dec 2012The conformal-cubic atmospheric model, a variable-resolution global model, is applied at high spatial resolution to perform simulations of present-day and future climate over southern Africa and over the Southwest Indian Ocean. The model is ...Read more
Author:Roux, FS; Zhang, YDate:Sep 2014Experimental setups for the optical implementation of projective measurements in the Laguerre-Gaussian basis are discussed. Special attention is given to the case where the measurements are made with the aid of single-mode fibers that are ...Read more
Author:Mouton, H; De Villiers, JPDate:2012A dramatic increase in rhino poaching, if allowed to continue at current rates, is threatening South Africa's rhino population with extinction. The available detection and prevention systems are not sufficient in solving this crisis. Targets ...Read more
Author:Funke, Nicola S; Nienaber, SDate:Jan 2012This paper aims to analyse how to encourage science uptake, here defined as the uptake and use of scientific research products (including journal articles, scientific reports, tools, expert knowledge, etc.), in the South African context. While ...Read more
Author:Naicker, K; Mneney, SHDate:Jun 2006The research aims to characterise the performance of the link by evaluating the effects of multipath propagation under various meteorological conditions. A LOS link was established between the Howard College and Westville campuses of UKZN and ...Read more
Author:Malan, DF; Napier, JAL; Watson, BPDate:Dec 1994The influence of an interface on the initiation and propagation of fractures was investigated using the Brazilian tensile test (diametral compression of a disc). Failure in the Brazilian test takes the form of an extension fracture in the ...Read more
Author:Belyi, VN; Khilo, NA; Kazak, NS; Ryzhevich, AA; Forbes, ADate:May 2011The authors investigate the generation and transformation of Bessel beams through linear and nonlinear optical crystals. They outline the generation of high-order vortices due to propagation of Bessel beams along the optical axis of uniaxial ...Read more
Author:Chaibi, A; Mafusire, C; Forbes, ADate:Sep 2013The orbital angular momentum of light has been suggested as a means of information transfer over free-space, yet the detected optical vortex is known to be sensitive to perturbation. Such effects have been studied theoretically, in particular ...Read more
Author:Reddy, KO; Maheswari, CU; Reddy, DJP; Guduri, BR; Rajulu, AVDate:Apr 2010The native (untreated) and alkali treated fibers from the ficus leaves were analyzed by Fourier transform infrared (FTIR), Chemical, X-ray and Thermo gravimetric methods. The morphology of the fibers before and after alkali treatment was ...Read more
Author:Jayaramudu, J; Reddy, DJP; Guduri, BR; Rajulu, AVDate:Jun 2009The ligno-cellulose natural fabric from the Polyalthia cerasoides tree was analyzed by FTIR, chemical, X-ray and thermo gravimetric methods. The morphology of the fibers was studied by scanning electron and polarized optical microscopic ...Read more
Author:De Koning, AJDate:Jan 2005The South African fishing industry converts pelagic fish unsuitable for human consumption into animal feed with high nutritional value. Nine factories along the west and southeast coasts of South Africa produce fish meal and fish oil. Fishermen, ...Read more
Author:Hoffmann, JH; Moran, VC; Van Wilgen, BWDate:Sep 2011Nine Pinus species (Pinaceae) have become invasive plants in South Africa after being deliberately introduced and cultivated in commercial forests, for timber. A proposal to use biological control to contain the problem raised concerns among ...Read more