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
Author:Gregory, MA; George, RC; Marshall, DJ; Anandraj, A; McClurg, TPDate:Jan 1999This study investigated the possibility that changes in the surface morphology of mussel (Perna perna) gill filaments may be used to indicate the relative toxicity of pollutants in the marine environment. Healthy, adult P. perna were collected ...Read more
Author:Fernandes, PJL; Jones, DRHDate:Sep 1997Liquid-metal-induced embrittlement under tensile test conditions is identified by the existence of a characteristic ductility trough. In this study, the effect of molten gallium on the behaviour of two brass alloys with different microstructures ...Read more
Author:Khawula, TNY; Raju, Kumar; Franklyn, PJ; Sigalas, I; Ozoemena, Kenneth IDate:Jul 2016Mesoporous molybdenum disulfide (MoS(sub2)) with different morphologies have been prepared via hydrothermal method using different solvents, water or water/acetone mixture. The MoS(sub2) obtained with water alone gave a graphene-like nanoflakes ...Read more
Author:Steyn, WJvdM; Visser, ATDate:2002The purpose of this paper is to indicate the effect that moving dynamic tyre loads has on the tyre-pavement contact stresses used in pavement analysis. Traditionally tyre loads (in pavement analysis) are modelled as constant loads applied ...Read more
Author:Robertson, GJ; Stoychev, Stoyan H; Sayed, Y; Achilonu, I; Dirr, HWDate:Mar 2017Glutathione S-transferase A3-3 is the most catalytically efficient steroid isomerase enzyme known in humans, transforming Δ5-androstene-3-17-dione into Δ4-androstene-3-17-dione. GSTA3-3 catalyzes this reaction with ten-fold greater efficiency ...Read more
Author:Skhosane, Besabakhe S; Tlotleng, Monnamme; Pityana, Sisa LDate:Mar 2020Laser surface treatment is widely used as an engineering technique due to its special characteristics and several advantages over other surface modification techniques. In the present study, elemental mechanically pre-alloyed powder consisting ...Read more
Author:De Beer, MorrisDate:1992This paper summarises some of the main effects of non-linear, ie stress stiffening (in this case) behaviour of resilient elastic moduli of typical granular base pavement structures on the calculated deflection basin. The basin was characterized ...Read more
Author:Sefara, Tshephisho JDate:Nov 2019Speech emotion recognition systems require features to be extracted from the speech signal. These features include Time, Frequency, and Cepstral-domain features. To normalise features, it is a challenging task to select an appropriate ...Read more
Author:Tjelele, TJ; Ward, D; Dziba, LEDate:Feb 2015Seed pods of Dichrostachys cinerea and Acacia nilotica have higher nutritive value than grasses and other browse plants during the dry season and form an important part of the diet of livestock. Seeds of Acacia may be destroyed during passage ...Read more