Author:Masina, Bathusile N; Akande, Amos A; Mwakikunga, Bonex WDate:Dec 2019Highly oriented VO2 (M1) thin films are difficult to produce using non-crystalline substrates. For example, to produce such films on glass has required post-annealing or the use of a ZnO transparent layer. Here, we overcome this challenge and ...Read more
Author:Kubjane, SM; Arthur, Nana KK; Masina, Bathusile N; Popoola, API; Pityana, Sisa LDate:Sep 2019Because of its low density, high corrosion resistance and high strength to weight ratio, titanium and its alloys are widely used in aerospace applications. As a result, the material is exposed to detrimental environment. An enhancement in ...Read more
Author:Daswa, Pfarelo; Gxowa, Zizo; Monareng, Mathibe JI; Mutombo, KalendaDate:Oct 2018Ti-6Al-4V alloys are well known for good corrosion resistance, excellent surface oxide biocompatibility and high specific strength. This paper investigates the influence of milling parameters on the formation of Ti-6Al-4V alloy processed using ...Read more
Author:Ndhundhuma, IM; Falzone, N; Dam, JSDate:Aug 2008Photodynamic therapy (PDT) can be defined as the combination of a light sensitive drug known as a photosensitizer and visible light of specific wavelength. PDT is carried out by administration of photosensitizer either systemically, locally, ...Read more
Author:Naidoo, Sasha; Zbonak, A; Ahmed, FDate:Sep 2006Productivity of forest plantations in South Africa is highly dependant on soil moisture availability. Soil moisture availability is often limited and evaporative demand is high. Eucalyptus grandis, planted extensively in South Africa, is ...Read more
Author:Mphahlele, NDate:Oct 2012Significant attention is being paid to dye solar cells (DSCs) as the next generation in solar cell technology for their low cost alternative to the currently implemented solid state solar cells [1]. In these devices, photosensitisers are one ...Read more
Author:Chauke, L; Daswa, P; Möller, H; Govender, SDate:Jul 2015Near-net shape casting of wrought aluminium alloys has proven to be difficult due to hot tearing. The Council for Scientific and Industrial Research (CSIR) has successfully processed wrought aluminium alloy 2139 into plate castings using the ...Read more
Author:Joubert, G; Barnard, EDate:Nov 2005The authors describe a system, based on open-source tools, that was developed in order to study the effect of network degenerations in Voice-over-Internet-Protocol applications on speech-recognition accuracy. Sophisticated play-out algorithms ...Read more
Author:Cawse K; Robin A; Sears MDate:Jun 2011Determining the intrinsic dimension of a hyperspectral image is an important step in the spectral unmixing process, and under- or over- estimation of this number may lead to incorrect unmixing for unsupervised methods. It is known that most ...Read more
Author:Mohlala, M; Modibedi, Remegia M; Mathe, Mahlanyane KDate:Nov 2007In polymer electrolyte membrane fuel cell (PEMFC), platinum is recognized to be the most active metal for methanol oxidation, however there is a strong CO adsorption tendency, which blocks the surface for further methanol adsorption and leads ...Read more
Author:Mutombo, K; Rossouw, PDate:Oct 2011Ti6Al4V alloy interacted with yttria fully stabilized zirconia face-coat to generate the alpha-case layer during the investment casting. The alpha-case mainly contained Al2O3, TiO2, TiO0.48, VO2, ZrO2 and Ti2ZrAl as revealed by the Energy ...Read more
Author:Adedeji, KB; Hamam, Y; Abe, BT; Abu-Mahfouz, Adnan MIDate:Jul 2018The battle of background leakage estimate (BLE) in water supply networks has been the subject of discussion in the last years. This paper aims to investigate the effect of pipe materials with particular reference to their impact on the BLE ...Read more
Author:De Beer, Morris; Horak, EDate:1987Most of the structural failures in road pavements are in one way or another associated with excess water trapped within the pavement structure owing to poor drainage. The combined effect of traffic loading and trapped water within the pavement ...Read more
Author:Erinosho, MF; Akinlabi, ET; Pityana, Sisa LDate:May 2016This paper reports the effect of powder density variation on the premixed Ti-6Al-4V/Cu and Ti-6A-4V/2Cu Composites. Two sets of experiment were conducted in this study. Five deposits each were made for the two premixed composites. Laser powers ...Read more
Author:Phasha, MJ; Kasonde, M; Ngoepe, PEDate:Nov 2008The CSIR is exploring options of mixing titanuim with lighter metal elements such as magnesium and aluminium to help decrease energy consumption. Titanium and its alloys are very important materials from both technological and scientific point ...Read more
Author:Machio, Christopher N; Chikwanda, HK; Chikosha, SDate:Oct 2010This article reports results of a study to determine the effect of process control agent (PCA) on the characteristics of Ti-Mg powders during milling. It has been shown that a 2% increase in PCA content leads to up to a 40% increase in yield ...Read more
Author:Reddy, J; Erasmus, C; Mlotshwa, L; Taylor, J; Dlamini, Nomusa RDate:01 Sep 2010Sorghum, a staple food in Africa, does not contain adequate amounts of provitamin A carotenoids to address the problem of vitamin A deficiency which affects up to 31 million people on the continent1. One attempt to solve this problem is through ...Read more
Author:Mokotedi, O; Watt, P; Pammenter, NDate:Nov 2011The purpose of this study was to deepen our understanding of the field performance of micro- and macro-propagated Eucalyptus grandis x nitens (GN), in comparison with seed-propagated E. grandis and E. nitens. The emphasis was on the relationship ...Read more
Author:Steenkamp, Anton J; Berman, Robert B; Kemp, Lana; De Saxe, Christopher CDate:Jul 2019The paved road network is a critical asset to any economy. South Africa has a paved road network that has an estimated value in excess of R2 trillion. This asset is however under threat as there was a backlog in maintenance of more than R197 ...Read more