Journal Articles: Recent submissions
Now showing items 2161-2180 of 29939
-
On Local Linear Regression Estimation of Finite Population Totals in Model Based Surveys
(University of Nairobi, 2018)In this paper, nonparametric regression is employed which provides an estimation of unknown finite population totals. A robust estimator of finite population totals in model based inference is constructed using the procedure ... -
Crystal Structures and Cytotoxicity ofent-Kaurane-TypeDiterpenoids from TwoAspiliaSpecies
(University of Nairobi, 2018)A phytochemical investigation of the roots ofAspilia plurisetaled to the isolationofent-kaurane-type diterpenoids and additional phytochemicals (1–23).The structures ofthe isolated compounds were ... -
Hepatoprotective effects of Erythrina abyssinica Lam Ex Dc against Non Alcoholic Fatty Liver Disease in Sprague Dawley Rats
(University of Nairobi, 2019)Background: Non-alcoholic fatty liver disease (NFLD) is the hepatic manifestation of the metabolic syndrome recognized as the most prevalent chronic liver disease across all age groups. NFLD is strongly associated ... -
Structural, Optical and Photoelectrochemical Properties of Cuprous Oxide Synthesized by Low Temperature Thermal Oxidation
(University of Nairobi, 2016)Ultrathin films (50-150nm thick) cuprous oxide (Cu2O) thin films were deposited by low temperature thermal oxidation technique. The structural, optical and photoelectrochemical properties of the thin films were investigated. ... -
Raman Crystallinity and Hall Effect Studies of Microcrystalline Silicon Seed Layers
(University of Nairobi, 2017)Aluminium induced crystallization (AIC) was used to crystallize sputtered amorphous silicon thin films on aluminium-coated glass substrates at annealing temperatures ranging from 250-520°C in vacuum. Crystalline volume ... -
Emphasis on Photovoltaic (PV) Solar System Installation Training: A Case Study of a PV Solar System Installed in Makueni County, Kenya
(University of Nairobi, 2017)The installation of Photovoltaic (PV) solar systems in institutions as well as homesteads in the rural areas in Kenya is increasing at a high rate; and so is the need for the stake holders to make sure the ... -
Electrophoretic Deposition of Titanium Dioxide Thin Films for Photocatalytic Water Purification Systems
(University of Nairobi, 2017)In this study, electrophoretic deposition (EPD) technique was used to deposit titanium dioxide (TiO2) thin films on conducting glass substrates for application in water purification from organic contaminants. Phenol was ... -
Electrophoretic Deposition ofTiO2Thin Films for Photocatalytic Degradation of Organic Pollutants in Water
(University of Nairobi, 2018)In this study, electrophoretic deposition (EPD) technique was used to deposittitanium dioxide (TiO2) thin filmson conducting glass substratesfor application in photocatalytic degradation of organic ... -
Characteristics And Production Constraints Of Smallholder Tomato Production In Kenya
(University of Nairobi, 2019) -
Hydrological Response and Complex Impact Pathways of the 2015/2016 El Niño in Eastern and Southern Africa
(University of Nairobi, 2018)AbstractThe 2015/2016 El Niño has been classified as one of the three most severe on record. El Niñoteleconnections are commonly associated with droughts in southern Africa and high precipitation ineastern Africa. Despite ... -
An overview of groundwater and sanitation challenges in Kisumu City, Kenya
(University of Nairobi, 2019)The sub-surface is used in most parts of Africa as a repository of human waste and as a source of groundwater through pit latrines and shallow wells respectively. The wells provide freshwater to millions of people in Africa ... -
Characterization of Major Ion Chemistry and Hydro-Geochemical Processes in Mt. Elgon Trans-Boundary Aquifer and Their Impacts on Public Health
(University of Nairobi, 2019)There is a gradual paradox shift from the utilization of surface water to groundwater in both urban and rural Kenya. This is because surface water is both diminishing in quantity due to climate variability and deteriorating ... -
Microbial and Physical Chemical Indicators of Groundwater Contamination in Kenya: A Case Study of Kisumu Aquifer System, Kenya
(University of Nairobi, 2019)Safe water of adequate quantity, and dignified sanitation, is vital for the sustenance of a healthy and productive human population. In the recognition of this, the United Nations formulated the Sustainable Development ... -
The Working Group on the Anthropocene: Summary of evidence and interim recommendations
(University of Nairobi, 2017)Since 2009, the Working Group on the ‘Anthropocene’ (or, commonly, AWG for Anthropocene Working Group), has been critically analysing the case for formalization of this proposed but still informal geological time unit. The ... -
Scale And Diversity Of The Physical Technosphere: A Geological Perspective
(University of Nairobi, 2016)We assess the scale and extent of the physical technosphere, defined here as the summed material output of the contemporary human enterprise. It includes active urban, agricultural and marine components, used to sustain ... -
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 ... -
The Effect Of Essential Oils Of Tagetes Minuta And Tithonia Diversifolia On On-host Behaviour Of The Brown Ear Tick Rhipicephalus Appendiculatus
(University of Nairobi, 2018)On-host behaviour of Rhipicephalus appendiculatus was studied in the field in Bungoma County in Kenya to evaluate the putative repellent effects of essential oils of Tagetes minuta and Tithonia diversifolia at its predilection ... -
Pathophysiological effects of Neem (Azadirachta indica) derivatives to Rhipicephalus appendiculatus, the tick vector for Theileriosis (East Coast Fever)
(University of Nairobi, 2017)Theeffects of 2 Neem derivatives, Neem oil (NO) and Neem Seed Powder (NSP),on various physiological parameters of the brown ear tick, Rhipicephalus appendiculatus,the vector for Theileria parva. ... -
Building Pastoralists’ Resilience To Shocks For Sustainable Disaster Risk Mitigation: Lessons From West Pokot County, Kenya
(University of Nairobi, 2019)Most pastoralists’ in Sub Saharan Africa (SSA) are adversely affected by climate-change related shocks such as droughts and livestock diseases. These shocks lead to deterioration of livestock quality and even mass death ... -
Cytotoxicity of selected medicinal plants extracts using the brine shrimp lethality assay from Samburu county, Kenya
(University of Nairobi, 2018)Aim of the study:This test was carried out to assess the cytotoxicity bioassay of selected medicinal plants from Samburu County, Kenya.Materials and Methods:Selectedmedicinal plants namely Clerodendrum ...
