Research Articles (School for Science and Technology)
Recent Submissions
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Estimation of radon potential through measurement of uranium concentrations in granite geology
(Academy of Science of South Africa, 2019)The geology of an area can be used as a predictor for radon potential. Granite rock typically contains a high concentration of uranium and subsequent elevated emanation of radon gas. The geology of the western part of the ... -
Influence of rotation on transversely isotropic piezoelectric rod coated with a thin film
(Polish Academy of Sciences, 2018)In this paper, the influence of rotation on axisymmetric waves of a piezoelectric rod coated with a thin film is studied using constitutive form linear theory elasticity and piezo-electric equations. Potential functions ... -
The mapping and investigation of radionuclide pollution in the processing plant of a spent phosphate mine by using GIS techniques
(CONSAS, 2018)The mining and refinement of phosphate is characterised by high levels of uranium. An in situ gamma ray survey was done at the processing plant of a spent phosphate mine near Vredenburg on the west coast of South Africa ... -
New interventions and sustainable solutions : reappraising illegal artisanal mining in South Africa
(University of Cape Town, Centre of Criminology, 2018)Despite being recognised as a significant contributor in the South African economy, the mining industry is riddled with illegal mining activities. Though it remains difficult to precisely measure the extent of the activities ... -
The investigation of radionuclides distributions in beach sand by means of GIS techniques
(CONSAS Conference, 2015-11)A transportable and robust gamma ray detection system (GISPI) was employed to determine the concentrations of naturally occurring radionuclides on various beaches in and around Saldanha Bay, located on the West Coast ... -
Optimal control of HIV/AIDS in the workplace in the presence of careless individuals
(Hindawi Publishing Corporation, 2014-06-26)A nonlinear dynamical system is proposed and qualitatively analyzed to study the dynamics of HIV/AIDS in the workplace. The disease-free equilibrium point of the model is shown to be locally asymptotically stable if the ... -
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Computational dynamics of arterial blood flow in the presence of magnetic field and thermal radiation therapy
(Hindawi Publishing Corporation, 2014-04-22)We conduct a numerical study to determine the influence of magnetic field and thermal radiation on both velocity and temperature distributions in a single blood vessel. The model here assumes that blood is a Newtonian ... -
Application of successive linearisation method to squeezing flow with bifurcation
(Hindawi Publishing Corporation, 2014-01-02)This paper employs the computational approach known as successive linearization method (SLM) to tackle a fourth order nonlinear differential equation modelling the transient flow of an incompressible viscous fluid between ... -
Unsteady hydromagnetic flow of radiating fluid past a convectively heated vertical plate with the Navier slip
(Hindawi Publishing Corporation, 2014-04-17)This paper investigates the unsteady hydromagnetic-free convection of an incompressible electrical conducting Boussinesq’s radiating fluid past a moving vertical plate in an optically thin environment with the Navier slip, ... -
Analysis of heat transfer in Berman flow of nanofluids with Navier slip, viscous dissipation, and convective cooling
(Hindawi Publishing Corporation, 2014-03-31)Heat transfer characteristics of a Berman flow of water based nanofluids containing copper (Cu) and alumina (Al2O3) as nanoparticles in a porous channel with Navier slip, viscous dissipation, and convective cooling are ... -
The background radiation and exposure levels at various South African west coast military units
(Stellenbosch University. Faculty of Military Science (Military Academy), 2014)The West Coast of South Africa between St Helena Bay to the north and Langebaan Lagoon to the south is characterised by numerous granite protrusions. These outcrops are elements of the underlying Cape Granite Suite, which ... -
The flow of a variable viscosity fluid down an inclined plane with a free surface
(Hindawi, 2013)The effect of a temperature dependent variable viscosity fluid flow down an inclined plane with a free surface is investigated.The fluid film is thin, so that lubrication approximation may be applied. Convective heating ... -
Analysis of thermal stability in a convecting and radiating two-step reactive slab
(Hindawi, 2013)This paper investigates the combined effects of convective and radiative heat loss on thermal stability of a rectangular slab of combustible materials with internal heat generation due to a two-step exothermic chemical ... -
Natural convection of viscoelastic fluid from a cone embedded in a porous medium with viscous dissipation
(Hindawi, 2013)We study natural convection from a downward pointing cone in a viscoelastic fluid embedded in a porous medium. The fluid properties are numerically computed for different viscoelastic, porosity, Prandtl and Eckert numbers.The ... -
New developments in fluid mechanics and its engineering applications
(Hindawi, 2013)Fluid mechanics is an active field of research with many unsolved or partially solved problems in science and engineering. Fluid mechanics can be mathematically complex. Sometimes the problems can best be solved by ... -
Computational modelling and similarity reduction of equations for transient fluid flow and heat transfer with variable properties
(Hindawi, 2013)We consider a system of coupled partial differential equations describing transient fluid flow and heat transfer with variable flow properties. Classical Lie point symmetry analysis of this system resulted in admitted ... -
Mapping of historical human activities in the Saldanha Bay military area by using in situ gamma ray measurements
(Faculty of Military Science, Stellenbosch University, 2012)Saldanha Bay on the west coast of South Africa is surrounded by various nature reserves, military units and training sites. Over a long period of time, large parts of this semi-arid area were exposed to human activities, ...
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