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Now showing items 17211-17220 of 17706
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
Influence of socio‐economic and agronomic factors on aflatoxin and fumonisin contamination of maize in western Kenya
(University of Nairobi, 2019)
Consumption of maize contaminated with mycotoxins has been associated with detrimental health effects. A farm survey covering 116 push‐pull and 139 non‐push‐pull
cropping systems was conducted to determine the socio‐economic ...
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 ...
Short-term dynamics of soil organic matter fractions and microbial activity in smallholder potato-legume intercropping systems
(University of Nairobi, 2019)
Continuous cultivation of potato (Solanum tuberosum L.) in monoculture systems represents the greatest factor deteriorating soil organic matter (SOM) in smallholder farms. With an aim to breaking this norm, a 2-year field ...
Optimizing yield and economic returns of rain-fed potato ( Solanum tuberosum L.) through water conservation under potato-legume intercropping systems
(University of Nairobi, 2018)
Even though potato (Solanum tuberosum L.)-based intercropping systems are widely practised in developing countries, only a few studies have focused on legumes as the companion intercrops. This study was conducted to assess ...