Browsing Faculty of Science by Title
Now showing items 342-361 of 381
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Technological advances in phytopathogen detection and metagenome profiling techniques
(Springer Science+Business Media, LLC, part of Springer Nature 2020, https://www.springer.com/journal/284, 2020)The use of advanced molecular methods in plant pathology and applied microbiology has necessitated for more accurate, rapid detection and identification of plant pathogens. This is particularly significant given accelerated ... -
Tensor Integral: A new comprehensive approach to the integration theory
(SCIENCEDOMAIN International, www.sciencedomain.org, 2014-09-15)We use tensor product to introduce a new approach to the theory of integration. Such an approach will strengthen the existing various classical concepts of integral and will provide a continuous thread tying the subject ... -
The theory of attenuated total reflection by surface polaritons on corrugated semi-infinite media
(Elsevier Science Ltd. www.elsevier.com/locate/physb, 2002-02)The experimental techniques of attenuated total reflection and grating-coupling were originally employed separately as probes for surface polaritons. However, as far back as the mid-1970s, some value was found in actually ... -
The theory of attenuated total reflection by surface polaritons on one-sided corrugated thin films
(Elsevier Science Ltd. http://www.elsevier.com/wps/find/journaldescription.cws_home/505712/description#description, 2003)The experimental techniques of attenuated total reflection (ATR) and grating coupling were originally employed separately as probes for polaritons. The combined technique of these methods into a single probe is a very ... -
Thermal analysis and annealing temperature dependence of electrical properties in Sn10Sb20Se70 glassy semiconductor
(Springer Netherlands, 2008)The melt-quenched Sn10Sb20Se70 sample in the bulk form was used to prepare films on well-cleaned glass substrates by thermal evaporation method. The activation energy for glass transition (apparent) and crystallization has ... -
Thermal annealing dependence of some physical propertiesof Bi-substituted Sn–Sb–Se glassy thin films
(EDP Sciences, 2009)Bulk glasses of the Sn10Sb20−xBixSe70 (0 x 8) system were prepared by the conventional melt quenching technique. Thin films were prepared by the thermal evaporation technique on glass substrates. Appearance of some ... -
Tourists’ perceptions and their willingness to pay for park fees: A case study of self-drive tourists and clients for mobile tour operators in Moremi Game Reserve, Botswana
(Elsevier http://www.linkinghub.elsevier.com/retrieve/pii/S0261517706001440, 2007)Moremi game reserve (MGR) in northern Botswana is one of southern Africa’s most popular destination because of its impressive wildlife and wilderness areas. To maintain the wilderness nature of the park and game reserve, ... -
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 ... -
Trace enrichment of metal ions in aquatic environments by Saccharomyces cerevisiae
(Elsevier; www.elsevier.com/locate/talanta, 2004)[Please note that chemical formulae do not display correctly in this abstract]. Sorption properties of baker's yeast cells, characterised as Saccharomyces cerevisiae were evaluated for trace enrichment of metal ions: Cd2+, ... -
Traditional ecological knowledge and community-based natural resource management: lessons from a Botswana wildlife management area
(Elsevier http://www.linkinghub.elsevier.com/retrieve/pii/S014362280300033X, 2004)The advent of community-based natural resource management (CBNRM) in Botswana in the late 1980s ushered in a new paradigm in natural resource management. The strategy marked a change from state-controlled to community-controlled ... -
Transboundary pollution in the Capital City of Botswana
(Infogain Publication, https://ijeab.com/, 2016-09)This paper presents aerosol studies carried out in the capital city of Botswana. The use of backward air mass trajectories has shown that elevated concentrations of fine particles correspond to situations when the air mass ... -
Two new anthraquinones from Gladiolus psittascinus
(Elsevier Ltd. www.elsevier.com/locate/biochemsyseco, 2007)Gladiolus psittascinus HOOK, an herbaceous plant, is propagated by its bulb. This onion-looking plant occurs in rocky places in western province of Cameroon. The bulbs are used to treat asthma, gonorrhoea, diabetes and ... -
Two new pterocarpans and a new pyrone derivative with cytotoxic activities from Ptycholobium contortum (N.E.Br.) Brummitt (Leguminosae): revised NMR assignment of mundulea lactone
(Springer International Publishing, http://link.springer.com, 2016)Background: Ptycholobium is a genus related to Tephrosia which comprises only three species. Compared to Tephrosia, which has been phytochemically and pharmacologically studied, Ptycholobium species have only few or no ... -
Tylosema esculentum extractives and their bioactivity
(Elsevier Science Ltd, http://www.elsevier.com/locate/bmc, 2011)The investigation of Tylosema esculentum (Morama) husks, cotyledons, and tuber yielded griffonilide 2, compound 1, griffonin 3, gallic acid 4, protocatechuic acid 5, b-sitosterol 6, behenic acid 7, oleic acid 8, sucrose ... -
Type II superconducting disk in a spatially inhomogeneous applied magnetic field
(Elsevier Science Ltd. www.elsevier.com/locate/physc, 2003-01)The problem of a type II superconducting disk in a spatially inhomogeneous magnetic field is considered. The aim of the investigations undertaken here is to evaluate the effects of the spatial inhomogeneity of the parallel ... -
Unconditional integrability with application to ergodic theorem
(ScienceDomain International, http://www.sciencedomain.org/, 2017-08-07)We present a straightforward introduction to the unconditional integrability in the extended sense. We state and proof useful necessary and sufficient conditions for unconditional integrability of complex or real valued ... -
Understanding Nickel Thin Film crystallization using X-Ray Diffractometry
(Bioline International. http://www.ajol.info/journal_index.php?jid=90, 2007-06)Normal, helical and zigzag deposited Ni films were produced by letting a vapour stream of source material impinge on Corning 1737 glass substrates at oblique incidence while rotating the substrate during deposition. Films ... -
An unexpected 1,2-hydride shift in phosphoric acid-promoted cyclodimerization of styrene oxides under solvent-free conditions. A synthetic route towards 2,4-disubstituted 1,3-dioxolanes
(Elsevier Science Ltd, http://www.elsevier.com/locate/tetlet, 2009)A 1,2-hydride shift in the phosphoric acid-promoted cyclodimerization of styrene oxide and its chloro derivatives under solvent-free conditions leading to 2,4-disubstituted 1,3-dioxolanes is described. Methoxy substituents ... -
A unified approach to integration theory
(International Journal of Applied Physics and Mathematics, www.ijapm.org/, 2019-01)We investigate the common features and the resemblance of the central parts of the different existing integration theories to obtain a more unified approach to the notion of integral. Our approach gives a presentation of ... -
Unified approach to vector valued integration
(Pushpa Publishing House, www.pphmj.com, 2013-06)We introduce a natural and more flexible approach to the definition of vector valued integral that will completely forgo any measurability assumption, strengthen the existing various classical concepts of ...