University of Botswana Research, Innovation and Scholarship Archive: Recent submissions
Now showing items 2101-2120 of 2188
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Electron-LO-phonon scattering near a current-carrying core
(Elsevier Science Ltd. http://www.elsevier.com/wps/find/journaldescription.cws_home/622948/description#description, 2008)A calculation is presented on the scattering rates of electrons via the bulk spectrum of longitudinal optical phonons near a current-carrying core of radius R employing the Frohlich interaction Hamiltonian. The electrons ... -
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 ... -
The Impact of Game Reserve Policy on the River BaSarwa/Bushmen of Botswana
(Blackwell Synergy; The definitive version is available at www.blackwell-synergy.com, 2004-08)The aim of this paper is to present a background discussion on the impact of game reserve policy on Bugakhwe, " River BaSarwa" (Bushmen/San people) in Eastern Ngamiland. The issues of local community ownership and its ... -
Optimising growth conditions for the pectinolytic activity of Kluyveromyces wickerhamii by using response surface methodology
(Elsevier / www.elsevier.com/locate/ijfoodmicro, 2003)This present study was undertaken to find optimum conditions of pH, temperature and, period of incubation for the pectinolytic activity of Kluyveromyces wickerhamii isolated from rotting fruits and to assess the effect ... -
A study of pulsatile blood flow modeled as a power low fluid in a constricted tube
(Elsevier; www.elsevier.com/locate/ichmt, 2007-07)A mathematical model for the pulsatile blood flow in a small vessel in a cardiovascular system with a mild stenosis is analyzed. Blood is modeled as a power low fluid and the differential approximation for the heat flux ... -
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 ... -
Antibacterial Diterpenes from the Roots of Ceriops tagal
(Natural Product Inc. http://www.naturalproduct.us/, 2008)Investigation of the roots of Ceriops tagal led to the isolation of a new isopimarane, together with the known diterpenes isopimar-8(14)-en-15,16-diol and erythroxyl-4(17),15(16)-dien-3-one. The structure of the new ... -
Antimicrobial and radical scavenging flavonoids from the stem wood of Erythrina latissima
(Elsevier Ltd; http://www.elsevier.com/wps/find/journaldescription.cws_home/273/description, 2004-11-20)From the stem wood of Erythrina latissima, two isoflavones and a flavanone were isolated and characterized as 7,3'-dihydroxy-4'-methoxy-5'-(y,y-dimethylallyl)isoflavone (erylatissin A), 7,3'-dihydroxy-6".6"-dimethyl-4".5 ... -
Measuring the impact of HIV and AIDS on agricultural production in Botswana
(Botswana College of Agriculture; http://www.bca.bw/Research/bojaasBca/Bojass_JournalsIndex1.htm, 2007-01)With an estimated 38% of the sexually active population infected, Botswana has one of the highest prevalence rates of HIV and AIDS. Since HIV and AIDS affect the most productive section of the population, it is expected ... -
Weight control perception among female adolescents in Botswana
(AFAHPER-SD; see http://www.ajol.info/journal_index.php?jid=153, 2000-10)This study examined the weight control perception and the factors associated with it among female adolescents in Gaborone, Botswana. The subjects were two hundred and twenty 15-17 year-old students from five Community ... -
Nutrition-infection interactions
(AFAHPER-SD; see http://www.ajol.info/journal_index.php?jid=153, 1998)Nutrition and health are closely related to each other. Adequate nutrition leads to good or normal health. The focus of this paper is on the interaction of, and relationships between, nutrition and infection (as a health aspect). -
Factors affecting prevalence of malnutrition among children under three years of age in Botswana
(Rural Outreach Program (ROP) www.ropkenya.org; http://www.ajfand.net/Index.html, 2006)Malnutrition affects physical growth, morbidity, mortality, cognitive development, reproduction, and physical work capacity, and it consequently impacts on human performance, health and survival. It is an underlying ... -
Evaluation of methods for the isolation, detection and quantification of cyanobacterial hepatotoxins
(Elsevier Ltd. http://www.elsevier.com/wps/find/journaldescription.cws_home/505509/description#description, 2006)Cyanobacterial hepatotoxins such as microcystins and nodularins have been responsible for the poisoning of both animals and humans who ingest or come into contact with toxic blooms. They are extremely stable in water due ... -
Effect of traditional Sudanese processing of kisra bread and hulu-mur drink on their thiamine, riboflavin and mineral contents
(Elsevier; www.elsevier.com/locate/foodchem, 1999)The effect of fermentation, germination and heating on the levels of thiamine, riboflavin and some mineral elements was studied in Sudanese kisra bread and hulu-mur drink prepared from the two sorghum cultivars dabar and ... -
Breastfeeding in Botswana: Practices, Attitudes, Patterns, and the Socio-cultural Factors Affecting Them
(Oxford University Press; http://tropej.oxfordjournals.org/, 2002-08)A cross-sectional descriptive study was conducted in four randomly selected districts of Botswana. Two study sites were chosen in each district. Four hundred households with children under 3 years old were enrolled into ... -
Production and evaluation of weaning foods based on sorghum and legumes
(Kluwer Academic Publishers; Springer Netherlands http://www.springerlink.com/content/t218k71qq13p5476/, 1999-03)Five weaning formulations (F1-F5) based on sorghum, groundnuts, sesame seeds, chickpeas, and skim milk powder were processed by a twin-roller drum dryer and evaluated for composition, functional properties (bulk density, ... -
Peer Victimization in Schools: Response from Botswana
(Kamla Raj; http://www.krepublishers.com/, 2005)This study made an investigation of the nature of peer victimization and its causes and effects on its victims. The investigation was carried out in six primary and twelve secondary schools in Botswana using questionnaires ... -
Predictors of food variety and dietary diversity among older persons in Botswana
(Elsevier; www.elsevier.com/locate/nut, 2005)Objective: We investigated whether food variety and diversity are associated with physical and cognitive functioning in older adults in Botswana and designed a simple set of screening questions that predict food variety ... -
An investigation into democratic practices in Botswana primary schools
(North West University; http://www.puk.ac.za/opencms/export/PUK/html/fakulteite/opvoed/educ/Reviewed_artikels.html, 2007-11-29)This paper reports the findings of a research study conducted among 64 undergraduate inservice teachers at primary schools in Botswana. It uses the qualitative research method to examine and discuss the different leadership ... -
Students' effective use of the library as an Information Resource Centre - a case of Senior Secondary Schools in Botswana
(Librarians of Institutes & Schools in Education (LISE); http://www2.worc.ac.uk/lise/, 2005)This paper investigated the extent to which secondary school students make use of school libraries. It pursued this objective by first looking at the history of libraries; the concept of a library and the important role ...