Browsing Faculty of Science by Title
Now showing items 362-381 of 381
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Urban environmental management in Botswana:towards a theoretical explanation of public policy failure
(Springer http://www.springerlink.com/index/05CM7XY4DJGUEUQL.pdf, 2001)For the last three and half decades, Botswana has been widely acclaimed to be one of sub-Saharan Africa's longest and most stable liberal democracies, coupled with and sustained by a growing economy. One of the major ... -
Urban water scarcity management: civic vs. state response in Bulawayo
(Pergamon, www.elsevier.com/locate/habitatint, 2002)In most sub-Sahara African cities, rapid urbanization has placed a heavy burden on available human, financial and socioeconomic resources. The problem has been compounded by the intricate and interactive effects of rapid ... -
Uropathogenic and antibiotic resistance of Candida species among women visitinga tertiary care hospital in Gaborone, Botswana
(Centre for Info Bio Technology (CIBTech), http://www.cibtech.org/jms.htm, 2016)The present paper aims to determine the prevalence and antibiotic susceptibility of Candida uropathogens among women at a tertiary hospital in Gaborone, Botswana. A total of 180 urine samples were collected from females ... -
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 ... -
Use of the geochemical and biological sedimentary record in establishing palaeo-environments and climate changein the Lake Ngami basin, NW Botswana
(Elsevier, www.sciencedirect.com, 2006)Sediment samples from a continuous 4.6m profile in the dry bed of Lake Ngami in NW Botswana were analysed for geochemistry and dated using both 14C and TL methods. Certain units in the profile were found to be diatom rich ... -
Using a pore-scale model to quantify the effect of particle re-arrangement on pore structure and hydraulic properties
(Wiley http://www.interscience.doi.wiley.com/10.1002/hyp.6299, 2008)A pore-scale model based on measured particle size distributions has been used to quantify the changes in pore space geometry of packed soil columns resulting from a dilution in electrolyte concentration from 500 to 1 ... -
Using merkle tree to mitigate cooperative black-hole attack in Wireless Mesh Networks
(The Science and Information Organization Inc., www.ijacsa.thesai.org, 2011)Security is always a major concern and a topic of hot discussion to users of Wireless Mesh Networks (WMNs). The open architecture of WMNs makes it very easy for malicious attackers to exploit the loopholes in the routing ... -
Vector measures of bounded semivariation and associated convolution operators
(Glasgow Mathematical Journal Trust, http://journals.cambridge.org/action/displayJournal?jid=GMJ, 2011)Let G be a compact metrizable abelian group, and let X be a Banach space. We characterize convolution operators associated with a regular Borel X-valued measure of bounded semivariation that are compact (resp; weakly ... -
Viral diversity and diversification of major non-structural genes vif, vpr, vpu, tat exon 1 and rev exon 1 during primary HIV-1 subtype C infection
(Public Library of Science, http://www.plosone.org/, 2012)To assess the level of intra-patient diversity and evolution of HIV-1C non-structural genes in primary infection, viral quasispecies obtained by single genome amplification (SGA) at multiple sampling timepoints up to 500 ... -
Virtualizing the p-ANAPL library: A step towards drug discovery from African medicinal plants
(Public Library of Science, http://www.plosone.org/, 2014)Background: Natural products play a key role in drug discovery programs, both serving as drugs and as templates for the synthesis of drugs, even though the quantities and availabilities of samples for screening are often ... -
Viscosity behaviour of particles with non-adsorbing polymers Part III—experimental study
(Elsevier B.V. www.elsevier.com/locate/colsurfa, 2004)A series of well characterised cis-poly(isoprene) (PIP) polymers (Mw = 1180, 8000, 28 300, 31 500, 86 000, 115 000 and 130 000) have been added to dispersions of poly(12-hydroxystearic acid) (PHS) coated poly(methylmethacrylate) ... -
Viscosity, molecular weight and concentration relationships at 298K of low molecular weight cis-polyisoprene in a good solvent
(Elsevier B.V. www.elsevier.com/locate/colsurfa, 2007)Aseries of six well characterised homopolymers of cis-polyisoprene (PIP) ranging from 1180 to 115,000 molecular weight were utilised to explore viscosity and the scaling relationship between viscosity and concentration ... -
Volumetric Properties of (Difurylmethane + Alkan-1-ol) Binary Mixtures at 298.15 K
(Journal of Solution Chemistry., 2006)Densities (ρ) of the binary systems of {difurylmethane+(ethanol or propan-1- ol or butan-1-ol or pentan-1-ol or hexan-1-ol)} have been measured with an Anton Paar DMA 4500 vibrating-tube densimeter over the entire ... -
Volumetric properties of (Difurylmethane + an Amide) binary mixtures at 293.15K, 298.15K and 303.15 K
(Science Publishing Group, http://www.ajphyschem.org/, 2017-04)Densities (ρ) of pure difuryl methane (DFM), N-methylformamide (NMF), N-ethylformamide (NEF), N,N-dimethylformamide (DMF) and N,N-dimethylacetamide (DMA) and those of [DFM + (NMF or NEF or DMF or DMA] binary mixtures over ... -
Voluntary counseling and testing among post-partum women in Botswana
(Elsevier www.elsevier.com/locate/pateducou, 2007)Objective: To determine uptake and socio-demographics predictors of acceptance of voluntary counseling and testing (VCT) among postpartum women in Botswana. Methods: Women attending maternal and child health clinics for ... -
Vulnerability assessment of the maize and sorghum crops to climate change in Botswana
(Springer http://www.springerlink.com/content/p88867543584713, 2004)This study examines the sensitivity of maize and sorghum crops to global warming in Botswana, a country with arid climatic conditions and shortfalls in locally produced grain. The vulnerability of the maize and sorghum ... -
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 ... -
Wildfires in Botswana and their frequency of occurrence
(Scientific Research Publishing Inc., https://www.scirp.org/journal/journalarticles.aspx?journalid=492, 2021-09-13)Fires play an essential part in the maintenance of the environment, but amplified fire activity often leads to adverse effects in the environment such as destruction of property and loss of life. Botswana has experienced ... -
Wildlife resource utilisation at Moremi Game Reserve and Khwai community area in the Okavango Delta, Botswana
(Elsevier http://www.doi:10.1016/j.jenvman.2005.03.007, 2005)This paper uses the concept of sustainable development to examine the utilisation of wildlife resources at Moremi Game Reserve (MGR) and Khwai community area (NG 18/19) in the Okavango Delta, Botswana. Using both secondary ... -
Work in Thermodynamics
(Chemic Publishing Co., http://www.asianjournalofchemistry.com/, 2006)The expression for mechanical work obtained in the expansion of a gas commonly used in physical chemistry textbooks is critically examined. The mathematical form of the first law of thermodynamics is arrived at by a procedure ...