School of Biological and Physical Science: Recent submissions
Now showing items 741-760 of 954
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The response of clone BBK 35 tea to nitrogen fertilizer rates and harvesting intervals in the lake Victoria basin of Kenya.
(CAB International, 2013-01-01)Tea is an economic crop in the Lake Victoria basin of East Africa, earning high foreign exchange and creating employment opportunities especially in the rural poor regions. It is grown under varying environments causing ... -
Impacts of climate-induced changes on the distribution of pesticides residues in water and sediment of Lake Naivasha, Kenya
(Springer Netherlands, 2013-03-01)This study reports evidence of increased chlorpyrifos contamination in sediment and water in Lake Naivasha following its intensive application in the horticultural farms in the catchment area. Analytical results show that ... -
Voulkensin C–E, new 11-oxocassane-type diterpenoids and a steroid glycoside from Caesalpinia volkensii stem bark and their antiplasmodial activities
(Pergamon, 2013-05-15)A bioassay guided isolation of potential antimalarial molecules from the stem bark of Caesalpinia volkensii Harms (Fabaceae) achieved three new 11-oxocassane-type diterpenoids named voulkensin C (1), D (2) and E (3) together ... -
Effects of Senna didymobotrya root extract and compounds on tritoninduced hyperlipidaemic rats and differentiation of 3T3-Li preadipocytes
(Bentham Science Publishers, 2013-11-03)he lipid lowering effects of Senna didymobotrya (Leguminoceae) root extract (250 mg/kg) and pure isolates (100 mg/kg) were investigated for hypolipidemic activity on Triton-induced hyperlipidemic rats (in-vivo). The extracts ... -
Effect of genotypes in different environments on micronutrient content of black tea
(bio publisher, 2014-02-08)Essential elements are needed in the day to day living of both human beings and the plants including tea (Camellia sinensis). Different clones of tea have been developed and distributed to farmers in various locations ... -
Endocrinology of year‐round reproduction in a highly seasonal habitat: Environmental variability in testosterone and glucocorticoids in baboon males
(Wiley Subscription Services, 2010-08-18)In conditions characterized by energetic constraints, such as in periods of low food availability, some trade‐offs between reproduction and self‐maintenance may be necessary; even year‐round breeders may then be forced to ... -
Life at the top: rank and stress in wild male baboons
(American Association for the Advancement of Science, 2011-07-15)In social hierarchies, dominant individuals experience reproductive and health benefits, but the costs of social dominance remain a topic of debate. Prevailing hypotheses predict that higher-ranking males experience higher ... -
Epidemiology of antimicrobial resistance among Escherichia coli strains in Trans-Nzoia County, Kenya
(Journal of Microbiology and Infectious Diseases, 2016-04-04)This study aimed to determine prevalence, antimicrobial susceptibility profile and the genetic basis to antimicrobial resistance, targeting blaTEM gene expression of diarrheagenic Escherichia coli among patients suffering ... -
Altmann, Jeanne
(John Wiley & Sons, 2017-04-16)Jeanne Altmann's attention to detail and remarkable sense of focus enabled her to overcome difficulties early in her career in order to give to science a wide‐ranging toolset, including her classic work on observational ... -
Hormonal correlates of natal dispersal and rank attainment in wild male baboons
(Academic Press, 2017-08-01) -
Evaluation of habitat use and ecological carrying capacity for the reintroduced Eastern black rhinoceros (Diceros bicornis michaeli) in Ruma National Park, Kenya
(John Wiley & Sons Ltd, 2019-09-29)We carried out a postrelease evaluation to determine predictors of habitat use and carrying capacity for the black rhinoceros (Diceros bicornis michaeli), which are criti‐ cal for monitoring how the Ruma National Park ... -
Effect of Implementation of Free Maternity Policy on Selected Maternal and Newborn Health Indicators in Gem Sub- County, Siaya County, Western Kenya
(Johns Hopkins University Press, 2019-08-03)Kenya introduced free maternity services in June 2013. The main study objective was to investigate the effect of this intervention on maternal and newborn health and specifically to determine differences in 4th antenatal ... -
Farm management practices and-their effects on yield, disease incidence and pest density of·banana and groundnut in western Kenya: planting density, intercropping and banana weevil Cosmopolites sordidus Germar (Gleoptera: Curculionidae) trapping
(East African Journal of Life Sciences, 2004-11-01)Studies on the effects of pseudostem trapping, plant density and intercropping on the banana weevil Cosmopolites sordidus Germar. populations and crop yields were conducted in western Kenya from 1994 to 1997. The objective ... -
Comparison of GeneXpert and line probe assay for detection of Mycobacterium tuberculosis and rifampicin-mono resistance at the National Tuberculosis Reference Laboratory, Kenya
(Springer Nature, 2019-10-15)The dual challenge of low diagnostic sensitivity of microscopy test and technical challenge of performing a TB culture test poses a problem for case detection and initiation of Tuberculosis (TB) second-line treatment. There ... -
Antibiotic resistance of Escherichia coli from humans and black rhinoceros in Kenya
(Springer Nature, 2019-12-07)Upsurge of antibiotic resistance in wildlife poses unprecedented threat to wildlife conservation. Surveillance of antibiotic resistance at the human–wildlife interface is therefore needed. We evaluated differences in ... -
Prevalence, Progression and Associated Risk Factors of Asymptomatic Peripheral Arterial Disease
(The Surgical Society of Kenya, 2017-01)Introduction: The prevalence of peripheral arterial disease (PAD) ranges between 4.5% and 57% and is independently associated with cardiovascular disease burden irrespective of symptoms. Two thirds of cases are thought to ... -
Assessment of organochlorine pesticides (OCPs) contamination in relation to physico-chemical parameters in the Upper River Kuja Catchment, Kenya (East Africa)
(2019)Concentrations of 17 organochlorine pesticides residues (alpha-HCH, beta-HCH, gamma-HCH, deltaHCH, Heptachlor, Aldrin, Endrin, Endosulfan I, Dieldrin, p,p’-DDT, Endosulfan II, p,p’-DDD, Endrin aldehyde, p,p’-DDE, Endosulfan ... -
Direct and indirect effects of predation and parasitism on the Anopheles gambiae mosquito
(BioMed Central, 2020-01-30)A good understanding of mosquito ecology is imperative for integrated vector control of malaria. In breeding sites, Anopheles larvae are concurrently exposed to predators and parasites. However, to our knowledge, there is ... -
Evidence of non-DDD pathway in the anaerobic degradation of DDT in tropical soil
(Springer Berlin Heidelberg, 2019-03-01)DDT transformation to DDD in soil is the most commonly reported pathway under anaerobic conditions. A few instances of DDT conversion to products other than DDD/DDE have been reported under aerobic conditions and hardly ... -
Monitoring the occurrence and distribution of selected organophosphates and carbamates pesticide residues in the ecosystem of Lake Naivasha, Kenya
(Taylor & Francis, 2014-08-07)Although use of pesticides is critical in agricultural production, their residues present a potential risk to non-target organisms and lower the quality of surface water. In Kenya for instance, widespread use of pesticides ...
