Author:Oboirien, BO; Thulari, V; North, Brian CDate:Sep 2014This paper presents a detailed study on the effect of temperature on the concentration of 27 major and trace elements in bottom ash generated from oxy fuel-combustion. The major elements are Na, Mg, Al, K, Ca and Fe and the minor and trace ...Read more
Author:Griffiths, M; Harrison, STL; Smit, Monique; Maharajh, Dheepak MDate:Mar 2016Macro- and microalgae are used in a variety of commercial products with many more in development. This chapter outlines the major products, species used, methods of production, extraction, and processing as well as market sizes and trends. ...Read more
Author:Van Heerden, Renier P; Von Solms, S; Vorster, JDate:May 2018The integration of technology in the modern society provides many benefits, but with increased connectivity comes increased risk where governments, businesses and individuals are vulnerable to a variety of cyber-attacks. Many of the large ...Read more
Author:Smith, Andrew CDate:May 2015To support economic growth, it is generally agreed that the supply of electrical energy has to meet, or exceed, the demand for electrical energy. Assuming the above statement holds true, at least two options exist when one considers how the ...Read more
Author:Paige-Green, P; Verhaeghe, Benoit MJADate:Oct 2018The inevitable impacts of climate change on the already stressed low volume rural road networks in Africa will have dire consequences in many countries. These networks generally suffer from a lack of appropriate construction standards and ...Read more
Author:Gqola, PDate:Mar 2007The utopian assumptions about the Internet and other allied Information and Communication Technologies (ICTs) as the harbingers of a world free of violent hierarchies have long since proved erroneous. Instead the initial idealism has been ...Read more
Author:Velthausz, DDate:Oct 2015Increasing urbanisation has introduced and exacerbated challenges related to the management of service delivery, resources and hazards. Making informed decisions for a city and its inhabitants is difficult because a city is an extremely complex ...Read more
Author:Wallis, JDate:Oct 2015Over the past 15 years, electro-optical engineers at the CSIR have developed the CoroCAM range of products for use in power line inspection. These powerful systems enable the visualisation of problems on faulty insulators and power line ...Read more
Author:Engelbrecht, AD; North, Brian C; Oboirien, BODate:31 Aug 2010South Africa has abundant resources of high-ash and other low-quality coals. The aim of this work is to investigate the possibility of using fluidised bed gasification technology to convert these coals into clean fuel gas. The fuel gas can ...Read more
Author:Napier, MarkDate:May 2007Contemporary and historical state interventions in South African cities and towns have distorted urban land markets affecting especially the poor. This has resulted in market failure for less wealthy individuals and households in their attempts ...Read more
Author:Johnson, David L; Mikeka, CDate:Sep 2016At Mulanje Secondary School, in Malawi’s verdant tea-growing district, something remarkable is happening: Students and teachers now have broadband access to the Internet for the first time, thanks to an over-the-air network that connects the ...Read more
Author:Claassen, Marius; Nortje, Karen; Le Roux, Wouter JDate:Sep 2018Over four days, workshop participants collaboratively identified opportunities to improve interagency cooperation, enhance the institutional framework, and strengthen capacity for public health emergency prevention and response in Malawi. ...Read more
Author:Heeg, J; Breen, CMDate:Jun 1982This report comprises a synthesis of contributions to a workshop on Man and the Pongolo held at the University of Natal, Pietermaritzburg in February 1978. Studies on the ecology of the Pongolo floodplain, encompassing its fauna, flora and ...Read more
Author:Joseph-Malherbe, S; Malherbe, DDate:Aug 2009Updating or changing the requirements statement during the systems engineering process may impact adversely on project parameters such as sequence, dependencies, effort, and duration of tasks, usually with an increase in development time and ...Read more
Author:Tredoux, G; Steyn, Maronel; Germanis, JDate:2011The town of Atlantis with a population exceeding 60,000 is located 50 km north of the centre of the City of Cape Town and presently forms part of the metropolitan area. Previously, the area resorted under the authority of the Cape Divisional ...Read more
Author:Wall, KDate:Dec 2009This thought piece is deliberately about issues and principles, rather than about setting out a step-by-step process for the planning and provision of services. What is important - and needs to be fully understood - are these issues and ...Read more
Author:Van Niekerk, B; Cloete, ChristoDate:Apr 2015The electromagnetic spectrum is becoming congested with the number of available wireless communication systems; the implications are that modern battlefields will have many electromagnetic signals. Electronic warfare commanders need sufficient ...Read more
Author:Toerien, DF; Grobbelaar, JU; Walmsley, RDDate:1987Interest in the mass cultivation of micro-algae as feed and foodstuff has existed since the turn of the century (Robinson and Toerien, 1962). Experiments using algae in photosynthetic research (Warburg, 1919) also led to an appreciation of ...Read more