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Browsing by Subject "Minerals"

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Characterization of respirable mine dust and diesel particulate matter

Author: Mahlangu, Vusi J ; Ndibewu, PP ; Pretorius, Cecilia J Date: Nov 2015 This paper presents the preliminary outcomes to develop and optimize methods to characterize DPM and respirable dust samples for the following: Crystalline compounds Common mineral analyses Particle size distribution Elemental Carbon (EC) and ... Read more
Computational modelling in materials at the University of the North

Author: Ngoepe, PE ; Catlow, CRA Date: Sep 2005 The authors review computational modelling studies in materials resulting from the National Research Foundation-Royal Society collaboration. Initially, investigations were confined to transport and defect properties in fluorine and oxygen ion ... Read more
Detecting changes in the nutritional value and elemental composition of transgenic sorghum grain

Author: Ndimba, R ; Grootboom, AW ; Mehlo, L ; Mkhonza, NL ; Kossmann, J ; Barnabas, AD ; Mtshali, C ; Pineda-Vargasa, C Date: Sep 2015 We have previously demonstrated that poor digestibility in sorghum can be addressed by using RNA interference (RNAi) to suppress kafirin synthesis. The approach resulted in a twofold improvement in overall protein digestibility levels. In the ... Read more
Determination of inclusions in liquid steel after calcium treatment

Author: Tshilombo, K Date: Feb 2010 Nozzle blocking was eliminated by calcium-treated liquid steel through changing the chemical and phase composition of alumina inclusions in aluminium-killed steel. Three different methods were applied to determine the composition of inclusions ... Read more
Methodology to unmix spectrally similar minerals using high order derivative spectra

Author: Debba, Pravesh Date: Jul 2009 This presentation presented to the SASA Eastern Cape Chapter at Rhodes University posses two questions: (a) how could estimates of abundances of spectrally similar iron-bearing oxide/hydroxide/sulfate minerals in complex mixtures be obtained ... Read more
Microwave-assisted rock breaking modelling and application

Author: Monchusi, B Date: Oct 2012 As part of the ongoing development of novel mining methods, the CSIR has developed alternative methods to break rocks. In this case, we show the application of microwave energy to break narrow tabular ore bodies. Read more
Mineral nutrients in mediterranean ecosystems

Author: Day, JA Date: Jun 1983 The notion of ecological convergence has influenced taxonomists and biogeographers since the development of ecology in the mid-nineteenth century. Our initial understanding of the ecosystems of the world resulted from plant geographers' ... Read more
The practice of coal petrography in South Africa

Author: Moodie, B Date: 1971 This report discusses about the practice of coal petrography in South Africa. Read more
Reduction in air pollution using the “Basa Njengo Magogo” methodology and applicability to low-smoke fuels

Author: Le Roux, Lukas J Date: 2009 The Department of Minerals and Energy (DME) piloted the top-down Basa njengo Magogo fire ignition method at Orange Farm during the winter in 2003. In total, 76% of households reported less smoke in the homes, while 67% reported less smoke in ... Read more
Report no. 3 of 1976 the grain-size distribution of the mineral matter in a sample of -0.5 mm + 200 = Landau coal

Author: Gaigher, JL Date: 1976 This report discusses an investigation of radio frequency ashing, micro-sieving in an ultrasonic bath and X-ray diffraction analysis, it is possible to determine the grain-size distribution of the mineral matter in a coal sample. Read more
Science of landscape restoration

Author: De Wet, Benita ; Komakech, C Date: Nov 2011 Over the last two decades the ecological restoration of industrial land has developed into a specialist science combined with highly sophisticated management activities. A prime example of this approach is a unique partnership between the ... Read more
Spectral unmixing: estimating partial abundances

Author: Debba, Pravesh Date: 2009 Most spectral unmixing techniques are variants of algorithms involving matrix inversion. Major problem in spectral unmixing is the non-orthogonality of end-members. The ability to estimate abundances in complex mixtures through spectral ... Read more
Unmixing of spectrally similar minerals

Author: Debba, Pravesh Date: 2009 Most spectral unmixing techniques are variants of algorithms involving matrix inversion. Major problem in spectral unmixing is the non-orthogonality of end-members. The ability to estimate abundances in complex mixtures through spectral ... Read more
Workplace: Geo physics

Author: Kataka, M ; Khomo, I Date: Jan 2007 The mining indusrty has become one of the successful industries. Geophysics is a branch of Geology and it involves the study of rocks and minerals. The profession of Geology has become critical over the years to the economy of many countries. ... Read more

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Browsing by Subject "Minerals"

Browsing by Subject "Minerals"

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All of ResearchSpace

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