Faculty of Science: Recent submissions
Now showing items 181-200 of 381
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Natural attenuation of mining pollutants in the transboundary Save River
(Elsevier Science Ltd, http://www.elsevier.com/locate/pce, 2011)The objective of the study was to investigate the role played by the natural environment in protecting the transboundary Save River from the impacts of metals derived from phosphate mining at Dorowa. The study is a follow ... -
Effect of water stress on photosynthetic characteristics of two sorghum cultivars
(Global Science Books, http://www.globalsciencebooks.info/, 2011)The effects of water stress on the photosynthetic characteristics of two locally-cultivated sorghum cultivars (‘Segaolane’ and ‘Town’) were investigated over a period of weeks. Water stress was imposed on 1-week-old plants ... -
Localized wood resource depletion in Botswana: Towards a demographic, institutional and cosmovisional explanation
(Taylor & Francis Ltd, http://www.tandf.co.uk/journals/cepe, 2002)In sub-Saharan Africa, communal land resource utilization and management has reflected changes in sociocultural belief systems, population dynamics, and modes of societal administration and regulation. This paper, based ... -
Energy sector policies in Botswana and their implications for global climate change
(Kluwer Academic Publishers, http://www.springerlink.com/content/102895/, 2002)Like most African countries, Botswana contributes almost insignificantly to global greenhouse emissions (GHGs). In this context, some have argued that energy policy and legislative measures to regulate emissions in Botswana ... -
Towards a theoretical exploration of the differential urbanisation model in Sub-saharan Africa: The Botswana case
(Blackwell Publishing Ltd, http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1467-9663, 2006)This paper investigates the extent to which the differential urbanisation model is applicable to Botswana by using empirical data obtained from periodic censuses, supportive documentary information and observations from ... -
Ionic and water relations of Sesuvium portulacastrum (L.)
(Academic Journals, http://www.academicjournals.org/, 2010)The aim of this study was to assess the growth response of Sesuvium portulacastrum (L.) (a halophyte) to various NaCl concentrations and hence determine how it is adapted to grow optimally under saline conditions. S. ... -
Floristic diversity and uses of medicinal plants sold by street vendors in Gaborone, Botswana
(Global Science Books, http://www.globalsciencebooks.info/, 2011)The sale of herbal medicine, either as concoctions or single plant specimens, has become common in the streets and main shopping centres of major towns and cities in Botswana. A study was undertaken to collect information ... -
An assessment of Prosopis L. in the Bokspits Area, South-Western Botswana, based on Morphology
(Global Science Books, http://www.globalsciencebooks.info/, 2011)The genus Prosopis comprises 44 species. Extensive introgression and hybridization is suspected in the genus, which makes identification of the species very difficult. Accurate identification of the species is crucial in ... -
Isolation of cultivable halophilic Bacillus sp. from the Makgadikgadi Salt Pans in Botswana
(Global Science Books, http://www.globalsciencebooks.info/, 2011)Halophilic bacteria from the Makgadikgadi salt pans in north central Botswana were isolated using culture-dependent methods. Polymerase chain reaction (PCR) amplification of the 16S rRNA gene and phylogenetic analysis were ... -
The influence of range fire on soil fungi, microbial activity and soil properties along the Boro route of the Okavango Delta
(Global Science Books, http://www.globalsciencebooks.info/, 2011)The influence of burning on soil microbial dehydrogenase activity, nitrogen content and fungal population along the Boro route in the Okavango Delta was assessed in the flood and dry seasons. Soil samples from the burnt ... -
Biomass production and economic value of Phragmites australis Reedbeds in the Southern Okavango Delta, Botswana
(Global Science Books, http://www.globalsciencebooks.info/, 2011)Most work globally on Phragmites spp. has been done in temperate northern hemisphere localities, where winter low temperatures and short day lengths cause a seasonal decrease in growth. In this study, we report above-ground ... -
Fungi and their use in the possible control of Nematodes in Botswana soils
(Global Science Books, http://www.globalsciencebooks.info/, 2011)A study assessing fungi isolated from three climatic regions of Botswana as a possible control for root knot nematodes (Meloidogyne spp.) affecting the tomato(Lycopersicon esculentum L. var. ‘Money maker’) crops was ... -
Computing knowledge and skills demand: A content analysis of job adverts in Botswana
(The Science and Information Organization, http://thesai.org/Publication/Default.aspx, 2011)This paper presents the results of a content analysis of computing job adverts to assess the types of skills required by employers in Botswana. Through the study of job adverts for computing professionals for one year ... -
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 ... -
Assessment of groundwater pollution vulnerability and modelling of the Kanye Wellfield in SE Botswana—a GIS approach
(Elsevier Science Ltd, http://www.elsevier.com/locate/pce, 2004)Botswana is a semi-arid country with limited recharge to groundwater resources. Groundwater however is a major source of water for domestic, industrial and agricultural uses. There is therefore the need to ensure that the ... -
Human–computer interface design issues for a multi-cultural and multi-lingual English speaking country — Botswana
(Elsevier Science Ltd, www.elsevier.com/locate/intcom, 2001)This paper reports on research carried out to determine whether a localised interface is preferred by users in a multi-cultural and multi-lingual country where a non-local language is nationally used,. We attempted to ... -
Building computer graphics education in southern Africa
(Elsevier Science Ltd, http://www.elsevier.com/locate/cag, 2003)This note discusses issues in building the educational base for computer graphics growth in developing countries, particularly in southern Africa. It is based on a delegation’s visit to southern Africa in the spring of ... -
Improving the quality of service guarantee in an Asynchronous Transfer Mode (ATM) Network
(Science Publications, http://www.scipub.org/scipub/c4p.php?j_id=JCS, 2007)This study presents a technique for improving the quality of service (QoS) guarantee in an ATM network. In the proposed model, it was assumed that high priority traffic have been allocated a switch resource to guarantee a ... -
Stochastic estimator-based wireless traffic control schemes
(Science Publications, http://www.scipub.org/scipub/c4p.php?j_id=JCS, 2007)Recent works on Available Bit Rate (ABR) traffic control have generated efficient control schemes for ABR traffic on Asynchronous Transfer Mode (ATM) network. This study examines the improved performance envisaged if these ... -
Sedimentological and geochemical evidence for palaeo-environmental change in the Makgadikgadi subbasin, in relation to the MOZ rift depression, Botswana
(Elsevier www.elsevier.com/locate/palaeo, 2005)This work considers new evidence for palaeo environmental change taking place during the Pleistocene in northern Botswana. Duricrusted strandlines along the northeastern margin of Sua Pan provide palaeo-environmental data ...