Browsing Research articles (Dept of Mechanical Engineering) by Issue Date
Now showing items 21-40 of 48
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A review of mining taxation in selected SADC countries and Chile
(University of Botswana, http://www.ub.bw, 2004)Although most SADC countries have or were in the process of liberalizing their legislation and fiscal regimes some member states seemed to levy exorbitant tax rates. SADC members’ states need to note that in designing the ... -
Draught requirements of enamel coated animal drawn mouldboard plough
(Czech Academy of Agricultural Sciences http://agriculturejournals.cz/web/RAE.htm, 2005)The power requirement of tillage implements is an important design consideration particularly for animal-drawn implements where the power is limited. The paper presents the possibility of reduction in the draught requirements ... -
Solar chimney power generation project - The case for Botswana
(Elsevier Science Ltd. www.elsevier.com/locate/rser, 2007)Import of a huge proportion of electrical energy from the Southern African Power Pool, and the geographical location and population distribution of Botswana stimulated the need to consider renewable energy as an alternative ... -
Application of enamel-coating for draught reduction of a mouldboard plough
(Akademiai Kiado, 2007)The effect of enamel-coating on the draught performance of an animal-drawn mouldboard plough was studied. A single furrow swing mouldboard plough-Maun Series, and the same type enamel-coated plough both ox-drawn, are ... -
Energy and exergy analyses of energy consumptions in the industrial sector in South Africa
(Elsevier Science Ltd, http://www.elsevier.com/locate/apenergy, 2007)The energy-utilization over a 10-year period (1994–2003) has been analysed for the South African industrial sector, which consumes more primary energy than any other sector of the economy. Four principal sub-sectors, ... -
Energy and exergy analyses of energy consumptions in the industrial sector in South Africa
(Elsevier http://www.elsevier.com, 2007)The energy-utilization over a 10-year period (1994–2003) has been analysed for the South African industrial sector, which consumes more primary energy than any other sector of the economy. Four principal sub-sectors, ... -
Performance evaluation of commonly used oil ram press machines
(CIGR Journal http://www.cigrjournal.org/, 2007)The ram-press technology for oil expression has received a lot of attention in many African countries during the last two decades. The technology is based on manually operated mechanical presses, which employ a slider-crank ... -
Investigating the pumping process of a resonance-vibrating pump for medium-depth boreholes
(Research in Agricultural Engineering http://journals.uzpi.cz/web/RAE.htm, 2007)This paper deals with the pumping process of a resonance-vibrating pump, which utilizes the resonance vibrations of one degree-of-freedom oscillating system. The pump is powered by a mechanical shaker consisting of ... -
Modelling and simulation of an air motor system using extended radial basis algorithm
(University of Botswana, Faculty of Engineering and Technology, http://ajol.info/index.php/bjt, 2007-04)This article proposes a new modeling scheme using extended radial basis function (RBF) and adaptive neuro-fuzzy filter for handling nonlinear uncertainties of an air motor servo valve. This model combines the fast model ... -
A new and innovative look at anti-insulation behaviour in building energy consumption
(Elsevier http://www.linkinghub.elsevier.com/retrieve/pii/S0378778808000923, 2008)This paper presents the findings of a case study with building simulation using EnergyPlus dynamic thermal simulation software, in which wall insulation was varied together with cooling set-point temperature in a hot and ... -
Solar home systems in Botswana—Opportunities and constraints
(Elsevier Science Ltd. http://www.elsevier.com/locate/rser, 2009)Lack of access to electricity grid form the main challenge facing majority of developing regions particularly in rural communities. The situation is driven mostly by the absence of electricity infrastructure in most of ... -
Designing architect's brief for a Faculty of Engineering
(Trans Tech Publications http://www.scientific.net/AMR.62-64.551, 2009)A team of academics produced a Design Brief (DB) to assist architects design a scholarly physical environment for modern engineering education and research. The information gathered from external and internal sources was ... -
Measurement of operating forces in a ram press crushing sunflower seed
(Blackwell Publishing Ltd, http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1475-1305, 2009)This study presents the experimental setup and results of measurement of forces and moments in a manually operated ram press machine. Tests were conducted on a BP30 ram press using electrical resistance strain gauges to ... -
Spreadsheets: the ideal tool for distance learning in Engineering education
(Wiley Periodicals Inc. http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1099-0542, 2009)Formal Engineering Education has traditionally been delivered using the low technology—high touch lecturing method, in which the lecturer and student meet face to face. Distance education in this field has been quite ... -
Acceptance of blackboard technology by mechanical engineering students at the University of Botswana
(Tempus Publications, 2009)Technology-based teaching and learning is entering academic life at an amazing rate. It comes whether invited or not. Students and lecturers are confronted with new technologies. There are new teaching methods to accompany ... -
Introduction to general education courses to engineering programmes at the University of Botswana
(Tempus Publications http://www.ijee.ie/, 2009)Complementary studies are fundamental for accreditation of engineering programmes in line with the Washington Accord. This paper presents the experiences of the University of Botswana in introducing General Education Courses ... -
Energy losses in a ram press machine for vegetable oil expression
(Dalhousie University, 2009) -
Coupled buckling design of steel laced columns
(University of Botswana, 2009)A new design developed by the authors that gives an opportunity to account for the interaction of different modes of buckling is presented.Eurocode 3 model is used as the reference model, an equivalent geometric imperfection ... -
Cyclic plasticity of polycrystalline nickel under axial–torsional loading
(Elsevier, www.elsevier.com, 2010)The axial–torsional cyclic deformation behavior of polycrystalline nickel was investigated by performing fully reversed plastic strain amplitude controlled fatigue experiments at effective plastic strain amplitudes ranging ... -
Experimental assessment of locomotive brake blocks-case studies of Botswana Railways
(University of Botswana, www.ub.bw, 2011)The brake blocks employed on Botswana Railways locomotives have been found to fail frequently resulting in increased maintenance and operational costs. The paper presents the metallurgical and mechanical properties of two ...