Search
Now showing items 21-30 of 31
Vulnerability of traditional beef sector to drought and the challenges of climate change: the case of Kgatleng District, Botswana
(Academic journals http://hdl/handle.net/10289/973, 2008)
Cattle’s rearing in Botswana is undertaken in two sectors: the communal and commercial. The
communal sector is exclusively free range and therefore depends on biomass production. This makes
the systems highly susceptible ...
Determination of allele frequencies in nine short tandem repeat loci of five human sub-populations in Botswana
(Academic Journals, www.academicjournals.org, 2008-04-17)
Allele frequencies for nine short tandem repeat (STR) loci from the AmpFlSTR® Profiler Plus PCR
Amplification Kit were determined in five subpopulations across Botswana and tested for suitability for
use in individual ...
Effects of prolonged UV-B exposure in plants
(Academic Journals. http://www.academicjournals.org/AJB, 2008)
Over the past few decades, there has been a depletion of the stratospheric ozone layer due to
emissions of halogen-containing compounds of anthropogenic origin. This has resulted in a
concomitant increase in solar ...
Effect of annealing on the structural, optical and electrical properties of ITO films by RF sputtering under low vacuum level
(Elsevier Science Ltd. http://www.elsevier.com/locate/mejo, 2008)
Indium tin oxide (ITO) thin films were prepared by RF sputtering of ceramic ITO target in pure argon atmosphere at a high base pressure of 3×10−4 mbar without substrate heating and oxygen admittance. The use of pure argon ...
Phase segregation in Pb:GeSbTe chalcogenide system
(EDP Sciences, 2008)
Effect of Pb substitution on the amorphous-crystalline transformation temperature, optical band
gap and crystalline structure of Ge2Sb2Te5 has been studied. In Pb:GeSbTe chalcogenide films prepared by
thermal evaporation, ...
Soil resources distribution, woody plant properties and land use in a lunette dune-pan system in Kalahari, Botswana
(Academic Journals, http://www.academicjournals.org/SRE, 2008)
The distribution of selected soil properties, selected woody vegetation properties, and land use in a
lunette dune-pan system were investigated in the Sekoma area, which is located within the IGBP Kalahari Transect (KT) ...
Intergenerational bargaining and wealth flows in the era of HIV/AIDS: emerging trends in Old Naledi-Gaborone, Botswana
(Taylor & Francis (Routledge), http://jir.ucsur.pitt.edu/, 2008)
Based on the intergenerational wealth flows conceptual framework, this paper investigates how the AIDS pandemic threatens to disrupt the transfer of resources between generations by using a typical low income urban area ...
Improved particle swarm algorithms for global optimization
(Elsevier Ltd. www.elevier.com/locate/amc, 2008)
Particle swarm optimization algorithm has recently gained much attention in the global optimization research community.
As a result, a few variants of the algorithm have been suggested. In this paper, we study the efficiency ...
Use of neutron probe and tensiometry techniques in determining water characteristics of the two soil types
(University of Botswana, Faculty of engineering and technology, http://www.ajol.info/index.php/bjt/index, 2008)
Characterisation of soil water, in particular water flow dynamics is fundamental in assessing the environmental
implications to soil management. Soil water characterisation was assessed by measuring soil water content and ...
Effect of composition on optical constants of Pb: GeSbTechalcogenide thin films
(2008)
Optical properties of Pb doped ternary Ge-Sb-Te chalcognide films prepared by thermal evaporation have been studied in
the visible and near-infrared spectral regions. The straightforward analysis proposed by Swanepoel has ...