Journal Articles: Recent submissions
Now showing items 2041-2060 of 29892
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Who Controls the Digital? Value Chains and the Challenges of Connectivity for East African Firms
(University of Nairobi, 2018)In recent years, internet connectivity has greatly improved across the African continent. This paper examines the consequences that this shift has had for East African firms that are part of global value chains (GVCs). ... -
Naphthalene Derivatives from the Roots of Pentas parvifolia and Pentas bussei
(University of Nairobi, 2016)The phytochemical investigation of the CH2Cl2/MeOH (1:1) extract of the roots of Pentas parvifolia led to the isolation of three new naphthalenes, parvinaphthols A (1), B (2), and C (3), two known anthraquinones, and five ... -
A Survey Of Traditional Medicinal Uses Of Catha Edulis (Celastraceae) In Meru And Eembu Counties Of Kenya.
(University of Nairobi, 2016)Catha edulis (qat) is an evergreen tree or shrub whose young leaves and stems are widely chewed in Eastern Africa. The aim of the present study was to document ethnomedicinal value of Catha edulis as used traditionally ... -
Isoflavones and Rotenoids from the Leaves of Millettia oblata ssp. teitensis
(University of Nairobi, 2017): A new isoflavone, 8-prenylmilldrone (1), and four new rotenoids, oblarotenoids A−D (2−5), along with nine known compounds (6−14), were isolated from the CH2Cl2/CH3OH (1:1) extract of the leaves of Millettia oblata ... -
Cytotoxicity Of Isoflavones And Biflavonoids From Ormocarpum Kirkii Towards Multi-factorial Drug Resistant Cancer
(University of Nairobi, 2019)Background While incidences of cancer are continuously increasing, drug resistance of malignant cells is observed towards almost all pharmaceuticals. Several isoflavonoids and flavonoids are known for their cytotoxicity ... -
Electrophoretic Deposition And Characterization Of TiO2/Nb2O5 Composite Thin Films For Dye Sensitized Solar Cells
(University of Nairobi, 2018)In this study, Electrophoretic Deposition (EPD) technique was used to fabricate TiO2/Nb2O5 composite thin films on FTO coated glass for application as photoelectrodes in Dye Sensitized Solar Cells (DSSC). A TiO2/Nb2O5 ... -
Assessment of Honeybee Colony Performance in the Agro-Ecological Zones of Uganda
(University of Nairobi, 2018)Honeybee colony performance is the ability of the honeybees to defend the colony and also to effectively collect nectar and pollen and thus productivity. The colony performance of honeybees in nine agro-ecological zones ... -
Assessment of the trends and presence of Water Related Conflicts in the Upper Ewaso Nyiro North River Basin: ACase for Laikipia County
(University of Nairobi, 2018)The main objective of the study was to assess how water resources are accessed, used and managed by diverse users pursuingdifferent socio-economic activities amicably. The Theory of Access, Game Theory, and Tragedy of ... -
Vegetative compatibility and phenotypic characterization as a means of determining genetic diversity of Aspergillus flavus isolates
(University of Nairobi, 2018)oxigenic Aspergillus species produce mycotoxins that are carcinogenic, hepatotoxic and teratogenic immunosuppressing agents in both human and animals. Kenya frequently experiences outbreaks of aflatoxicosis with the worst ... -
Contents lists available atScienceDirectJournal of Hydrology: Regional Studiesjournal homepage:www.elsevier.com/locate/ejrhImpacts of land use and land cover change on surface runoff,discharge and lowflows: Evidence from East Africa
(University of Nairobi, 2018)Region:East Africa.Focus:A review of catchment studies (n = 37) conducted in East Africa evaluating the impacts ofLand Use and Land Cover Changes (LULCC) on discharge, surface runoff, and lowflows.New hydrological ... -
The Potential For CO2 Geosequestration In Kenya: A Suitability Assessment Of The Lamu Basin
(University of Nairobi, 2019)There is a consensus that current trends in climate change may be due to increasing concentrations of greenhouse gases (predominantly methane and carbon dioxide) from anthropogenic emissions. Among measures proposed for ... -
Groundwater hydrodynamics of an Eastern Africa coastal aquifer during the recent La Niña 2016-17 drought
(University of Nairobi, 2019)In 2016-17 much of East Africa was affected by a severe drought which has been attributed to Indian Ocean Dipole and El Niño Southern Oscillation conditions. Extreme events such as this have immediate and knock-on effects ... -
Constraints And Solutions For Groundwater Development, Supply And Governance In Urban Areas In Kenya
(University of Nairobi, 2019)Based on a five-town case-study cohort in Kenya, a conceptual framework has been developed to enable the formulation of holistic and effective strategies that encompass the national aspirations and regional to global ... -
IDIS Journal of International Studies and Diplomacy :Countering Terrorism in the 21st Century Africa
(University of Nairobi, 2018-06) -
Design of trials for interrupting the transmission of endemic pathogens
(University of Nairobi, 2016)Background Many interventions against infectious diseases have geographically diffuse effects. This leads to contamination between arms in cluster-randomized trials (CRTs). Pathogen elimination is the goal of many ... -
Knock down efficacy of commercially available insecticides against Anopheles gambiae
(University of Nairobi, 2017)Knockdown efficacy of commercial aerosol insecticides against laboratory reared Anopheles gambiae Kisumu strain mosquitoes and suppression of indoor resting density of A. gambiae complex mosquitoes in the field were ... -
Effect Of Insecticide-treated Bed Nets On House-entry By Malaria Mosquitoes: The Flight Response Recorded In A Semi-field Study In Kenya
(University of Nairobi, 2017)Insecticide-treated nets are currently a major tool to reduce malaria transmission. Their level of repellency affects contact of the mosquito with the net, but may also influence the mosquito’s entry into the house. The ... -
Variation in host preferences of malaria mosquitoes is mediated by skin bacterial volatiles.
(University of Nairobi, 2017)The host preferences of the anthropophilic mosquito species in the Anopheles gambiae complex (Diptera: Culicidae) are mediated by skin bacterial volatiles. However, it is not known whether these mosquitoes respond ... -
Essential oils of indigenous plants protect livestock from infestations of Rhipicephalus appendiculatus and other tick species in herds grazing in natural pastures in western Kenya
(University of Nairobi, 2018)The effects of formulated essential oils of Tagetes minuta and Tithonia diversifolia on Rhipicephalus appendiculatus infesting livestock were evaluated in semi-field experiments. Forty-five zebu cattle naturally infested ... -
Containment Studies of Transgenic Mosquitoes in Disease Endemic Countries: The Broad Concept of Facilities Readiness
(University of Nairobi, 2018)Genetic strategies for large scale pest or vector control using modified insects are not yet operational in Africa, and currently rely on import of the modified strains to begin preliminary, contained studies. Early ...