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Now showing items 1460-1479 of 2172
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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 ... -
Performance measurement of integrated sports facilities in Botswana: customers’ perspectives
(University of Botswana, www.ub.bw, 2018-05)The purpose of the present study was to determine performance of Integrated Sports Facilities in Botswana by examining the relationship between stadium factors (community, service, utilization perspectives) and customers’ ... -
Performance review: today it's me
(University of Botswana, www.ub.bw, 2016-09-14)Today It’s me, a stylized, narrated musical written by Botswana’s talented playwright and actor is about a brave popular singer from Uganda, Philly Lutaaya, and how he handled his HIV positive status and AIDS in the 1980s.The ... -
Performativity in school management and leadership in Botswana
(EMAL, http://ema.sagepub.com, 2011-11)The thesis of this article is that the uncritical adoption of Western models of education management and leadership policies results in poor performance in schools in disadvantaged communities in developing countries. The ... -
Perianal malignant nodular hidradenoma in HIV infected pregnant patient
(Health and Medical Publishing Group, https://publons.com/publisher/2123/health-and-medical-publishing-group, 2018-06)Malignant nodular hidradenoma (MNH) is a rare invasive tumour arising from eccrine sweat glands, with significant risk for local recurrence and distant metastases. Hidradenoma papilliferum is reported in pregnancy. To our ... -
Persistence and decline of traditional authority in modern Botswana politics
(Botswana Society, www.botsoc.org.bw, 2008)This paper explores the role traditional authorities have played in post-independence Botswana and their likely future impact. Three overarching themes run through the analysis. First, this illiberal institution is ... -
Personnel transfers: experiences of Batswana teachers
(Pula: Botswana Journal of African Studies, 2004)This article analyses the findings of a study conducted to investigate the effects of teacher transfers onfamily well-being. While much concern has been raised about the trauma of transfers on families, this is the ... -
Petrology and geochemistry of the Neoproterozoic Nguba and Kundelungu Groups, Katangan Supergroup, southeast Congo: Implications for provenance, paleoweathering and geotectonic setting
(Elsevier www.elsevier.com/locate/jafrearsci, 2006)The Nguba and Kundelungu Groups constitute the middle and upper parts of the Neoproterozoic Katangan Supergroup, respectively, and consist of conglomerates, sandstones, mudrocks and carbonates. During deposition, the ... -
Phase segregation in Pb:GeSbTe chalcogenide system
(EDP Sciences. http://www.epjap.org/, 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, ... -
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, ... -
The phase separation behaviour and the viscoelastic properties of particles with non-adsorbing polymers: Part I - Experimental study
(Elseview Science B.V. www.elsevier.nl/locate/colsurfa, 2000)A series of well characterised cis-polyisoprene polymers have been added to dispersions of PHS coated PMMA particles in dodecane. At a molecular weight of 8000 g mol−1 and above, these systems showed phase separation at ... -
Phenolic and antibacterial constituents of Vahlia capensis
(Georg Thieme Verlag, https://www.thieme.com/books-main/biochemistry/product/3494-planta-medica, 1997)The n-butanol fraction of Vahlia capensis yielded kaempferol, quercetin, afzelin, astragalin, quercitrin, iso-quercitrin, rutin, gallic acid, chiro-inositol, dulcitol, and a novel biflavonoid, VC-15B (vahlia biflavone). ... -
Phenology is the dominant control of methane emissions in a tropical non-forested wetland
(Springer Nature, https://www.springernature.com, 2022-01-10)Tropical wetlands are a significant source of atmospheric methane (CH4), but their importance to the global CH4 budget is uncertain due to a paucity of direct observations. Net wetland emissions result from complex ... -
A phenomenological interpretation of Kerebe greetings
(Taylor and Francis, 2001)This article argues that greeting among the Kerebe is a phenomenological project of everydayness in which the concept of being manifests itself in a dialogic manner. This is revealed through the four variables on which ... -
Phenylpropanoid glycosides of Gnidia polycephala
(Elsevier Ltd. www.elsevier.com/locate/phytochem, 2003)Two phenylpropanoid glucosides, 2-O-b-d-glucosyloxy-4-methoxybenzenepropanoic acid and its methyl ester, together with syringin and adicardin were isolated from the stem of Gnidia polycephala and characterized by physical ... -
The phonologization of English words in Kalanga
(University of Botswana; www.ub.bw, 2015-10-08)The Kalanga language is spoken in Botswana and Zimbabwe. In Botswana, it has no literary role, but the majority of its speakers have learnt English at school. This has over time led to borrowing and adoption of English ... -
Photochromism, anomalous multi-banded fluorescence and laser properties of some amino- and tosyl-amino derivative of oxadiazole
(Elsevier Ltd. www.elsevier.com/locate/saa, 2006)The multi-banded fluorescence and laser properties of 11 new amino- and tosylamino derivatives of 2,5-di(phenyl)-1,3,4-oxadiazole and oxadiazole in various solvents at 293 K are reported. All the compounds investigated ... -
Photochromism, anomalous multi-banded fluorescence and laser properties of some amino- and tosyl-amino derivatives of oxadiazole
(Elsevier Science Ltd. www.elsevier.com/locate/saa, 2006)The multi-banded fluorescence and laser properties of 11 new amino- and tosylamino derivatives of 2,5-di(phenyl)-1,3,4-oxadiazole and oxadiazole in various solvents at 293K are reported. All the compounds investigated ... -
Photoionization cross-section in a GaAs spherical quantum shell: the effect of parabolic confining electric potentials
(Springer Nature, https://www.springer.com/, 2021-06-22)Theoretical study on binding energies due to a centred charged impurity and the associated photoionization cross-section (PCS) in a spherical shell are presented. This was achieved by solving the Schrödinger equation within ... -
Photon interaction cross sections in the low energy region in Mg and V
(Elsevier Science Ltd. www.elsevier.com/locate/radphyschem, 2004)The interaction of photons with matter has been extensively studied over the past several decades in view of its importance in basic radiation physics research, medical, industrial and other applied fields. Large amounts ...