Author:Brown, ACDate:1985This review of international literature on the biological effects of crude oil pollution in the sea relevant to the South African situation is based on some hundred selected referenced.Read more
Author:Mokgonyane, TB; Sefara, Tshephisho J; Manamela, MJ; Modipa, TIDate:Aug 2019Speaker recognition is a technique that automatically identifies a speaker from a recording of their speech utterance. Speaker recognition technologies are taking a new direction due to rapid progress in artificial intelligence. Research in ...Read more
Author:Ramasobane, P; Mashinini, MP; Masina, Bathusile NDate:Nov 2022This study investigated the microstructural evolution of Ti6Al4V-ELI reinforced with TiC, fabricated via in-situ laser metal deposition technique. The 3.85% volume fraction TiC/Ti6Al4V-ELI metal composite samples were fabricated at two different ...Read more
Author:Musee, N; Oberholster, Paul J; Sikhwivhilu, L; Botha, AMDate:2010Increasing uses of engineered nanoparticles (ENPs) in commercial products and industrial applications has eventually resulted to their releases into atmospheric, terrestrial, and aquatic environments. However, knowledge gaps in ENPs toxicity, ...Read more
Author:Edwards, ADate:Apr 2012Mineworkers are exposed to combinations of stressors, since they spend most of the working shift performing physical work under noisy, hot, humid and dusty conditions, in some cases with exposure to chemicals. Such combined exposure confounds ...Read more
Author:Long, Craig S; Loveday, Philip W; Groenwold, AADate:Sep 2009The effects of selected membrane, plate and flat shell finite element formulations on optimal topologies are numerically investigated. Two different membrane components are considered. The first is a standard 4-node bilinear quadrilateral, ...Read more
Author:Scholes, RJ; Van Breemen, NDate:Sep 1997Alteration of land use will continue to be the dominant driver of environmental change in the tropics for the next several decades. It can take the form of fundamental vegetation cover transformation, or of intensification of existing land ...Read more
Author:Tlotleng, Monnamme; Lengopeng, Thabo; Seerane, Mandy N; Pityana, Sisa LDate:Oct 2017Ti and its intermetallic alloys are light-weight and have good creep properties. Materials of this nature are desired for the manufacturing of parts for the aerospace, automotive and power plants. Titanium aluminides, in particular, are ...Read more
Author:Chikwanda, HK; Maweja, KDate:Jan 2008The synthesis of Ti-Mg alloys using mechanical alloying method has been investigated. Effects of the mechanical alloying parameters on the resultant microstructural features have been studied. This work presents the effects of milling speed ...Read more
Author:Skosana, Vusi J; Ngxande, MDate:Jan 2020Edge-preserving smoothing filters have been shown to improve generalisation performance on the HOG features with a SVM classifier. However, not all smoothing filters and parameters lead to better performance. The effects of smoothing filters ...Read more
Author:Petersen, Chantel R; Jovanovic, Nebojsa; Le Maitre, David C; Grenfell, MCDate:Jan 2017This study aimed to link land cover/use change to water quality in an important water supply coastal catchment. The approach followed a spatial and temporal analysis of historical catchment land use change to assess how changes influenced ...Read more
Author:Tshabalala, Lerato C; Pityana, Sisa L; Mbaya, RDate:2012This article will illustrate the correlation between microstructural and microhardness changes in high-strength-low-alloy steel that occur as a result of laser-bending. Laser bending is a process of bending metal shapes using the laser beam ...Read more
Author:Tlotleng, Monnamme; Olakanmi, E; Pityana, Sisa L; Shukla, M; Akinlabi, EDate:Oct 2012This study seeks to demonstrate Laser Assisted Cold Spraying (LACS) by depositing Al-12wt%Si on stainless steel substrate. LACS is a newly designed, assembled and commissioned technology in the CSIR, laser materials processing laboratories. ...Read more
Author:Maina, JW; De Beer, Morris; Matsui, KDate:Aug 2007In this study, the effect of layer interface slip rate on the critical responses such as (primary) tensile strains as well as strain distortion energies for a flexible runway pavement structure is examined based on strain energy of distortion. ...Read more
Author:Fossey, A; Mathura, S; Beck-Pay, SLDate:Apr 2009The invasiveness of black wattle (Acacia mearnsii) in South Africa has created a need to investigate ways to reduce seed production. The Institute for Commercial Forestry Research is investigating polyploidy production with the view to inducing ...Read more
Author:De Villiers, J; Wilson, F; Nicolls, FDate:Nov 2011A variety of lens distortion modelling techniques exist. Since they make use of different calibration metrics it is difficult to select one over the others. This work aims to compare lens distortion modelling techniques and calibration patterns ...Read more
Author:Mathoho, Ipfi; Akinlabi, ET; Arthur, Nana KK; Tlotleng, Monnamme; Makoana, Nkutwane WDate:Feb 202017-4 PH stainless steel has proven to be one of the workhorse materials in industries such as aerospace, chemical, and energy. The attraction of this alloy to the aforementioned industries is derived from the fact that 17-4 PH stainless steel ...Read more
Author:Fernandes, PJL; Jones, DRHDate:Oct 1995Liquid-metal-induced embrittlement (LMIE) refers to the loss of ductility in normally ductile metals and alloys when stressed while in contact with a liquid metal. In this study, the fatigue crack growth behaviour of brass in molten gallium ...Read more