Author:Ittmann, HW; Sarma Yadavalli, VSDate:Jun 2010The history and current activities of the Operations Research Society of South Africa (ORSSA) is presented in this chapterRead more
Author:Sitas, Nadia E; Prozesky, HE; Esler, KJ; Reyers, BDate:Oct 2014Despite much progress in ecosystem services research, a gap still appears to exist between this research and the implementation of landscape management and development activities on the ground, especially within a developing country context. ...Read more
Author:Chou, HN; Govender, G; Ivanchev, LDate:2006SSM is now considered an established technology to produce high integrity near net shape components for the automotive industry in particular. Although it is used extensively in the automotive industry, very little attention has been given ...Read more
Author:Machete, FannieDate:Oct 2016Household energy consumption, transport and waste disposal contribute 51.2%, 32.8% and 16% of anthropogenic carbon to the atmosphere, respectively. Although most of the waste based carbon is convertible into various forms of energy for ...Read more
Author:Anandjiwala, RDDate:Jun 2013Natural fibers, such as flax, hemp, kenaf, coir, sisal and jute, are gaining increasing importance in automotive, aerospace, packaging, fiber-reinforced composites and other technical and industrial applications. This is due to the fact that ...Read more
Author:Godfrey, Linda K; Gorgens, JF; Roman, HDate:Dec 2018Following an active science-meets-industry approach on dealing with biomass and organics waste streams, this timely book foregrounds key issues facing South African policy makers, industry practitioners and scholars.
The editors drew ...Read more
Author:Mushwana, CrescentDate:Sep 2015In 2014, 93 GW of wind and PV were newly installed globally, and until today renewables are mainly driven by the United States, Europe and China. South Africa has implemented an Integrated Resource Plan 2010 which highlights a plan of the ...Read more
Author:Van Vuuren, DS; Engelbrecht, AD; Hadley, TDDate:Oct 2005The value chain of titanium products shows that the difference between the cost of titanium ingot and titanium dioxide is about $9/kg titanium. In contrast, the price of aluminum, which is produced in a similar way, is only about $1.7/kg. ...Read more
Author:Mafusire, C; Forbes, A; Michaelis, MM; Snedden, Glen CDate:Aug 2010Gas lenses work on the basis that aerodynamic media can be used to generate a graded refractive index distribution which can be used to focus a laser beam. Examples of these are the spinning pipe gas lens (SPGL) and the flame lens (FL). The ...Read more
Author:Mafusire, C; Forbes, A; Michaelis, MM; Snedden, Glen CDate:Jun 2008If a heated pipe is rotated about its axis, a density gradient is formed which results in the pipe acting as a graded index lens. In this study the authors revisit the concept of a spinning pipe gas lens and for the first time analyse both ...Read more
Author:Moloto, N; Mpelane, S; Sikhwivhilu, LM; Ray, Suprakas SDate:2012A microwave-assisted hydrothermal method was used to synthesize ZnO and TiO2 nanostructures. The experimental results show that the method resulted in crystalline monodispersed ZnO nanorods that have pointed tips with hexagonal crystal phase. ...Read more
Author:Berruet, M; Pereyra, CJ; Mhlongo, Gugu H; Dhlamini, MS; Hillie, KT; Vázquez, M; Marotti, REDate:Oct 2013Nanostructured zinc oxide thin films were spin coated on conductive glass substrates via a sol–gel based technique using zinc acetate dihydrate as precursor. The pH of the alkalis used as catalytic agents in the hydrolysis step is shown to ...Read more
Author:Ashok, AC; Marchington, RF; Mthunzi-Kufa, Patience; Krauss, TF; Dholakia, KDate:Mar 2010The authors describe the realization of integrated optical chromatography, in conjunction with on-chip fluorescence excitation, in a monolithically fabricated poly-dimethylsiloxane (PDMS) microfluidic chip. The unique endlessly-single-mode ...Read more
Author:Singh, A; Karsten, AEDate:Jul 2011Optical Coherence Tomography (OCT) has been used in biomedical applications as a method to non-invasively detect changes occurring in tissue such as the detection of skin cancer. The effect of skin tone on detection of skin cancer has however ...Read more
Author:Karsten, AE; Singh, A; Ndhundhuma, IDate:Jan 2010In this study a commercial FD-OCT (Model OCM1300SS) by Thorlabs Inc., USA was used. This system has the following performance specifications: 1300nm centre operating wavelength, a 110nm 3dB spectral bandwidth, transverse spatial air resolution ...Read more
Author:Mgaga, Sboniso S; Tapamo, JRDate:Dec 2020Latent fingerprints are fingerprint impressions left on the surfaces a finger comes into contact with. They are found in almost every crime scene. Conventionally, latent fingerprints have been obtained using chemicals or physical methods, ...Read more
Author:Jonathan, E; Dam, JSDate:Jul 2008The hand palm is an important human body part primarily for physical manipulation of the environment. For example, palmar hyperhidriotics report a low quality of life due to excessive palmar sweating disrupting normal palm use. As a body part ...Read more