Author:Nortje, Karen; Funke, Nicola S; Jacobs-Mata, Inga M; Steyn, Maronel; Claassen, MariusDate:Jan 2011LiveDiverse is a multi-year, multi-country collaborative research project that focuses on the interface between livelihoods and biodiversity of people in rural communities who live in or in the vicinity of a biodiversity ‘hotspot’. Five ...Read more
Author:Baloyi, J; Bello-Ochende, T; Meyer, JPDate:Jul 2016In the study the comparison of irreversibilities was done when the wall condition of the combustor was changed from adiabatic to negative heat flux, for incoming air temperature of 400 K. The reactant mixture of solid pitch pine wood fuel and ...Read more
Author:Skosana, PJ; Van Vuuren, DS; Heydenrych, MDDate:Oct 2014One of the advantages of bubble columns is high heat transfer rates. High heat transfer is important in reactors when high thermal duties are required. An appropriate measurement of heat transfer coefficient is of primary importance for ...Read more
Author:Pratt, Lawrence EDate:Dec 2019Under-performance of a solar PV plant can have a negative impact on the financial returns for investors, owners, and insurers. The factors contributing to under-performance fall into four categories: overly optimistic prediction models, ...Read more
Author:Ribbens, H; Pillay, SDate:Jul 2008The current road safety situation in the City of Johannesburg is a major concern to the city authority. More than 120 000 road accidents (on average about 330 accidents per day) occur every year leading to about 600 fatal and 16 000 injury ...Read more
Author:Gxowa, Zizo; Chown, LH; Govender, GonasagrenDate:Oct 2017This work evaluates the effect of warm temperature (170-280°C) uniaxial compression on the deformation behaviour of SiC reinforced Metal Matrix Composites (MMCs). Green and sintered compacts (d=8mm, h=12mm) were produced by blending 2124-Al ...Read more
Author:La Grange, CC; Wolmarans, JJDate:1950According to information given by the Manager at navigation Colliery in May 1950, the mining height in the No. 5 seam is about 6 feet at the top of this consist of inferior material and is loaded into separate, specially marked tubs underground ...Read more
Author:La Grange, CC; Wolmarans, JJDate:1950A bulk face sample (no. T124) of approximately 1 ton was taken on 12/4/1950 from the No. 5 seam, South African Witbank colliery at a point about 70 east of a point 100 south of peg 104. The seam here was about 69'' thick.Read more
Author:La Grange, CC; Wolmarans, JJDate:1950This report details how coal from the No. 5 seam in the Witbank colliery was tested for washability and related characteristics.Read more
Author:Mvuma, GDate:Oct 2010The nexus of rapid population growth and improved socio-economic status of a country have been established as having a close correlation to increasing quantities of wastes generated per capita. Various studies show that waste harvesters ...Read more
Author:Oelofse, Suzanna HH; Nahman, AntonDate:Oct 2018It is estimated that 125 million tonnes of municipal solid waste is generated in Africa, of which only about 68 million tonnes are collected. Unsanitary landfilling and open dumping of the collected waste is the predominant waste disposal ...Read more
Author:Oelofse, Suzanna HH; Nahman, AntonDate:May 2019It is estimated that 125 million tonnes of municipal solid waste is generated in Africa, of which only 68 million tonnes is collected. Unsanitary landfilling and open dumping of collected waste are predominant waste disposal options in many ...Read more
Author:Oelofse, Suzanna HH; Nahman, Anton; Godfrey, Linda KDate:Jun 2018The global waste sector is undergoing a paradigm shift from “waste” to that of “secondary resource” within the vision of a circular global economy. The circular economy emphasizes keeping resources in use for as long as possible through re-use, ...Read more
Author:Haywood, Lorren K; Kapwata, T; Oelofse, Suzanna HH; Breetzke, G; Wright, CYDate:Aug 2021Domestic solid waste is rapidly increasing due to accelerated population growth and urbanization. Improper waste disposal poses potential health risks and environmental concerns. Here, we investigated waste disposal practices in relation to ...Read more
Author:Oelofse, Suzanna HHDate:Jun 2018The focus of this chapter is on the enabling governance environment to support sustainable waste management systems in Africa. The introduction section provides background on what is meant by governance and good governance and the status of ...Read more
Author:Nhamo, GDate:Nov 2008Great efforts have been made towards environmental and/ or waste management law reform and harmonisation in South Africa. However, much discord still remains. Such discord emerges from the Constitution and other environmental laws that fail ...Read more
Author:Afrika, M; Oelofse, Suzanna HH; Strydom, W; Mvuma, G; John, JDate:Oct 2010One of the major challenges facing municipalities in South Africa is ensuring that all households within their areas of jurisdiction are provided with a basic level of waste service (DEAT, 2007). Huge waste service backlogs still exists in ...Read more
Author:Oelofse, Suzanna HHDate:Jul 2011Waste pickers are common on landfills in South Africa, salvaging valuable items in order to earn a living. This presentation provide some insights on the activities of the pickers at landfills.Read more