Author:Jiba, Z; Snyman, IM; Shoke, L; Sono, TJDate:Sep 2016The purpose of this work is to evaluate sacrificial materials that can be used in the blast chamber during the detonation of encased charges. This paper details the evaluation of sacrificial materials arranged in an arena manner and the damage ...Read more
Author:Jacobs, Z; Wintle, AG; Duller, GATDate:May 2006In previous work the conventional Single aliquot regenerative protocol procedure has been demonstrated to work well for a large number of samples. Application of the conventional SAR procedure (but with a range of pre-heat temperatures) to ...Read more
Author:Schmidt, KM; Swart, S; Reason, C; Nicholson, Sarah-AnneDate:Dec 2017Surface ocean wind datasets are required to be of high spatial and temporal resolution and high precision to accurately force or be assimilated into coupled atmosphere–ocean numerical models and to understand ocean–atmospheric processes. In ...Read more
Author:Steyn, WJvdM; Bean, W; King, D; Komba, Julius JDate:Dec 2011The efficient operation of a country’s economy depends, among other things, on an efficient logistical system to ensure that goods can be transported efficiently between producers and users. The costs of logistics include aspects such as ...Read more
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