Author:Abdullah, H; Mtsweni, Jabu SDate:Nov 2014The University of South Africa (UNISA) is South Africa’s largest Open Distance Learning (ODL) institution and the leading provider of higher education opportunities within the ODL sphere. UNISA’s high student enrolment figures and its strict ...Read more
Author:Theron, Andre; Engelbrecht, JeanineDate:Sep 2018Sinkholes are global phenomena with significant consequences on the natural- and built environment. Significant efforts have been devoted to the assessment of sinkhole hazards to predict the spatial and temporal occurrence of future sinkholes ...Read more
Author:Greben, JMDate:Jun 2010The author discusses a new theory of the universe in which the vacuum energy is classical origin and dominates the energy content of the universe. As usual, the Einstein equations determine the metric of the universe. However, the scale factor ...Read more
Author:Anandjiwala, RDDate:Nov 2013Nonwoven geotextiles are complex three-dimensional structures formed by the random arrangement of fibres. They are permeable and compressive textile materials and belong to the geosynthetic group, which also includes geogrids, geonets, ...Read more
Author:Mgangira, Martin B; Das, Sonali; O'Connell, Johannes SDate:Jul 2016Following the observation of physical form of distress that leads to premature failure, investigations are usually initiated in order to identify causes or factors of the observed early pavement distress, which is often due to a combination ...Read more
Author:Rushworth, AM; Talbot, CF; Von Glehn, FH; Lomas, RM; Franz, RMDate:Nov 2001This report provides a source of information that is designed to allow direct and effective action to be taken at both corporate and individual mine level to improve the visual working environment. This should, in turn, lead to improved safety ...Read more
Author:Van Heerden, Quintin; Van Heerden, MDate:Oct 2017Government institutions exercise public administration and the delivery of public services takes place at all three spheres of government. Section 195 of the Constitution of the Republic of South Africa, 1996, requires that government service ...Read more
Author:Havenga, JDate:Oct 2017This presentation discusses the role of macrologistics in industrial development: Infrastructure and policy. The focus is on the rise of Macrologistics, South Africa’s Macrologistics status, South Africa’s Macrologistics improvement opportunities, ...Read more
Author:Opoku, F; Govender, Krishna; van Sittert, CGCE; Govender, PPDate:Oct 2017The global dependence on exhaustible fossil fuel resources has made the search for an alternative renewable and sustainable fuel more urgent. Photocatalysis has gained increasing consideration as a promising technology to solve problems ...Read more
Author:Greesh, N; Ray, Suprakas S; Bandyopadhyay, JDate:Oct 2013This work evaluates the role of the surface properties and shape of clay type on the morphology, thermal, and thermo-mechanical properties of the polystyrene (PS)/clay nanocomposites prepared via free-radical emulsion polymerization. Attapulgite ...Read more
Author:Monteiro, Pedro MS; Dewitte, B; Scranton, MI; Paulmier, A; Van der Plas, AKDate:2011In this study the authors investigate the possible reasons for the widespread differences between the seasonal cycles of carbon production and export compared to those of hypoxia in eastern boundary upwelling systems. An idealized model is ...Read more
Author:Ray, SS; Bousmina, MDate:May 2007The role of organically modified layered silicate as a compatibilizer for immiscible polystyrene (PS) with polypropylene (PP) or polypropylene grafted with maleic anhydride (PP-g-MA) blends was investigated. Scanning electron micrographs (SEM) ...Read more
Author:Malwela, T; Ray, Suprakas SDate:Sep 2014This study reports the effect of organically modified nanoclay on the morphology and crystal growth behavior of biodegradable polylactide/poly[(butylene succinate)-co-adipate] (PLA/PBSA) blend thin films with the average thickness of 280 nm. ...Read more
Author:Rust, FC; Van Wyk, Llewellyn V; Ittmann, HW; Kistan, Kenny FDate:Jul 2008The current status of South Africa's infrastructure is analysed with emphasis on transport infrastructure. The role of Science, Engineering and Technology as well as associated Research and Development in supporting the development of sustainable ...Read more
Author:Funke, Nicola SDate:Oct 2012The focus of this presentation is to understand the acid mine drainage policy in Gauteng, South Africa, and the role that scientists play within this policy.Read more
Author:Horn, JDate:2000There is very little information on small-scale sawmilling (SSM) in South Africa, particularly on the size of the timber resource, the number of people employed by the sub-sector, and its profitability. In addition, there is no information ...Read more
Author:Marais, Mario A; Lotriet, H; Matthee, M; De Moor, ADate:Nov 2022This paper tells the story of an Information and Communication Technology for Development (ICT4D) project and a research approach. The research used a novel definition of sustainable development that emerged from South American development ...Read more
Author:Veerasamy, Namosha; Labuschagne, William ADate:Dec 2017We now live in a digital, interconnected world. Social media has emerged as a pervasive component of this digital age in which having an online presence dominates. Facebook, Twitter and LinkedIn all provide modern forms of engagement for ...Read more
Author:Njiro, EDate:Feb 2006Global environmental changes, such as globalisation, involve accelerated interconnections and interdependent processes that require an integrated and interdisciplinary approach. Because human activities are most significant in their negative ...Read more
Author:Ojijo, Vincent O; Ray, Suprakas S; Sadiku, RDate:Dec 2012Binary blends of two biodegradable polymers: polylactide (PLA), which has high modulus and strength but is brittle, and poly[(butylene succinate)-co-adipate] (PBSA), which is flexible and tough, were prepared through batch melt mixing. The ...Read more