Author:Moller, Hein; Burger, Herman; Tlotleng, Monnamme; Yadroitsev, I; Makoana, Nkutwane WDate:Nov 2016In Selective Laser Melting, the initial units produced are single tracks that overlap to create a single layer; from the sequence of layers, a 3D object is manufactured. The properties of the parts produced by SLM depend heavily on the ...Read morecb
Author:Rust, FC; Coetser, K; Verhaeghe, Benoit MJADate:Aug 1992Large amounts of money are spent annually on sealing or overlaying cracked road pavements, however, the reflection of cracks through these materials is a problem experienced worldwide. In countries with well-developed road infrastructures ...Read more
Author:Ngcama, Lwando; Mostert, NDate:Nov 2021With the rapid increase in social media use in higher education institutions, social media policies and guidelines have generally been implemented by those institutions as a means to monitor and manage their staff and students’ social media ...Read more
Author:Fouché, Gerda; Eloff, JN; Wellington, Kevin WDate:2017Acaricides are commonly used to control ticks but are toxic, harmful to the environment and too expensive to resource-limited farmers. Traditionally, many communities in South Africa rely on a wide range of indigenous practices to keep their ...Read more
Author:Du Plessis, EM; Theron, J; Berger, E; Louw, MEDate:Nov 2007A phosphatase secreted by Staphylococcus aureus strain 154 has previously been characterized and classified as a new member of the bacterial class C family of non-specific acid phosphatases. As the acid phosphatase activity can be easily ...Read more
Author:Govender, G; Möller, HDate:2008In order for SSM forming to produce homogeneous properties in a casting, it is important that there is a uniform distribution of the primary grains. Besides producing a sound casting free of porosity, the amount of liquid segregation must be ...Read more
Author:Edwards, AL; Milanzi, LA; Khoza, NN; Letsoalo, MS; Zungu, LIDate:Jan 2015This study aimed to evaluate the current practices in relation to best practice criteria and make recommendations for improvements to noise-induced hearing loss (NIHL) awareness training in the South African mining industry. A survey tool ...Read more
Author:Edwards, AL; Milanzi, LA; Khoza, NN; Letsoalo, MS; Zungu, LIDate:Jan 2015This study aimed to evaluate the current practices in relation to best practice criteria and make recommendations for improvements to noise-induced hearing loss (NIHL) awareness training in the South African mining industry. A survey tool ...Read more
Author:Edwards, AL; Milanzi, LA; Khoza, NN; Letsoalo, MS; Zungu, LIDate:Jan 2015This study aimed to evaluate the current practices in relation to best practice criteria and make recommendations for improvements to noise-induced hearing loss (NIHL) awareness training in the South African mining industry. A survey tool ...Read more
Author:Messenger, JR; Devilliers, HA; Laubscher, SJA; Kenmuir, K; Ekama, GADate:Jul 1993A number of advantages are claimed for dual digestion as a system for sewage sludge pasteurisation and stabilisation. In this paper, the first of a series of 4, an overview of a 4-year full-scale (45 m3 aerobic reactor and 500 m3 anaerobic ...Read more
Author:Messenger, JR; Devilliers, HA; Ekama, GADate:Jul 1993In a comprehensive study of the performance of a full-scale (45 m3) pure oxygen autothermal thermophilic aerobic reactor of a sewage sludge dual digestion system, it was found that: Biological heat generation rate was directly proportional ...Read more
Author:Hemp, DADate:May 1992This report is concerned with the analysis data from three sites during mining with and without backfill, in order to determine the effect that backfill on regional seismicity. Since the geology and stress fields in any two areas used for ...Read more
Author:Mgangira, Martin BDate:Jul 2009The purpose of this study was to asses the strength of enzyme treated soil material. Thus the aim of the paper is to present laboratory results on the effects of two enzyme-based liquid chemicals as soil stabilizers. Soil samples were prepared ...Read more
Author:Ngulube, T; Gumbo, JR; Masindi, Vhahangwele; Maity, ArjunDate:Jun 2019The present work describes the removal of Direct Red 81, Methyl Orange, Methylene Blue and Crystal Violet from aqueous solution using halloysite nanotubes. The clay mineral was physicochemically characterized using various methods. The ...Read more
Author:Truter, JC; Van Wyk, JH; Oberholster, Paul J; Botha, A-M; Mokwena, LMDate:May 2017Knowledge regarding the potential impacts of crude oil on endocrine signaling in freshwater aquatic vertebrates is limited. The expression of selected genes as biomarkers for altered endocrine signaling was studied in African clawed frog, ...Read more
Author:Mabila, J; Herselman, Martha EDate:Aug 2018Research has shown that sustaining the integration of information and communication technologies (ICTs) to support teaching and learning in government schools in resource-constrained environments in South Africa remains a challenge.Read more
Author:Dye, PJ; Soko, S; Poulter, AGDate:Jul 1996Information on the water use of Pinus patula plantations is required to predict the impact of forest plantations on water resources in South Africa, The heat pulse velocity (HPV) method is a promising technique for measuring water use by ...Read more
Author:Cilliers, Jacques E; Smit, JC; McDonald, Andre M; Baker, CJ; Woodbridge, KDate:Oct 2012This paper addresses the prediction of the maximum recognition performance of a radar for a predetermined set of targets and radar waveforms. Use is made of the information theoretic concept of mutual information (MI) to perform this analysis. ...Read more
Author:Tlotleng, Monnamme; Lengopeng, T; Pityana, Sisa LDate:Oct 2016Titanium aluminide intermetallics are very brittle at room temperature, hence they are challenging to fabricate even by conventional manufacturing techniques such as casting and forging. The production of TiAl from elemental powders using ...Read more
Author:Komba, Julius J; O'Connell, Johannes S; Paige-Green, PDate:Jul 2014The overall performance of an asphalt mix is dependent on, amongst others, the properties of the constituent materials, which include aggregate, binder and filler. The aggregate for production of asphalt mixes is usually sourced from a quarry, ...Read more