Faculty of Science & Technology (FST): Recent submissions
Now showing items 421-440 of 4283
-
Zinc oxide photocatalytic decolourization of black tea (camellia sinensis) wastewater from processing factories in Kenya
(University of Nairobi, 2016)Decolourization of persistent brick-red colour of black tea processing wastewater was investigated. Wastewater samples were collected from three black tea processing factories in the western Kenya tea growing highlands and ... -
Conductive silver paste smeared glass substrates for label-free raman spectroscopic detection of hiv-1 and hiv-1 p24 antigen in blood plasma
(University of Nairobi, 2017)We report on application of conductive silver paste smeared glass slides as Raman spectroscopy sample substrates for label-free detection of HIV-1 p24 antigen in blood plasma. We also show that the same substrates can be ... -
Incipient rifting accompanied by the release of subcontinental lithospheric mantle volatiles in the Magadi and Natron basin, East Africa
(University of Nairobi, 2017)Geochemical investigations of volatiles in hydrothermal systems are used to understand heat sources and subsurface processes occurring at volcanic-tectonic settings. This study reports new results of gas chemistry and ... -
Consumer lending using social media data
(University of Nairobi, 2016)Consumer credit has been around for a long period of time but the dynamics observable from the consumers makes it hard to credit score and lend to the consumers. This difficulty results in the poor being excluded ... -
The digital matatu project: Using cell phones to create an open source data for Nairobi's semi-formal bus system
(University of Nairobi, 2015-12)In many of the world's growing cities, semi-formal buses form the basis of public transit systems. However, little open and standardized data exist on these systems. The Digital Matatus project in Nairobi, Kenya set out ... -
Cytotoxicity of Plumbagin, Rapanone and 12 other naturally occurring Quinones from Kenyan Flora towards human carcinoma cells.
(University of Nairobi, 2016)BACKGROUND: Cancer is a major public health concern globally and chemotherapy remains the principal mode of the treatment of various malignant diseases. METHODS: This study was designed to investigate the cytotoxicity ... -
Bioactive properties of tagetes minuta l.(asteraceae) essential oils: a review
(University of Nairobi, 2016)Mexican marigold (Tagetes minuta L.) and its accruing products have a long worldwide history of human uses such as food, therapeutics and aromatherapy which are inherent in the plant’s unique chemical composition and ... -
Chemical composition and antifungal activity of essential oils of tagetes minuta (asteraceae) against selected phytopathogenic fungi
(University of Nairobi, 2016)The objective of this study was to determine the chemical composition and antibacterial activity of essential oils (EOs) of Tagetes minuta against three phytopathogenic bacteria Pseudomonas savastanoi pv. phaseolicola, ... -
Standardization of commiphora abyssinica engl. Gum resin from kajiado, Kenya
(University of Nairobi, 2016)Information on the physical and chemical characteristics of Commiphora abyssinica gum resin is scanty. The aim of this work was to establish the composition and physicochemical properties of above mentioned gum resin and ... -
A survey of traditional medicinal uses of catha edulis (celastraceae) in Meru and Embu counties of Kenya
(University of Nairobi, 2016)Catha e d ulis (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 ... -
Co-occurrence and diversity of soil trichoderma and fusarium species from different land use intensities in Machakos county, Kenya
(University of Nairobi, 2016)Soil fungi are important components of the soil biota and their diversity is a good indicator of soil health. Soil fungi respond differently to land use practices and to their relative populations. The cooccurrence and ... -
Optical and electrical properties dependence on thickness of screen-printed tio2 thin films.
(University of Nairobi, 2016)Effect of film thickness on the optical and electrical properties of TiO2 thin films were studied. Thin films of different thicknesses were deposited by screen printing method on fluorine doped tin oxide coated on glass ... -
Chemical composition and antibacterial activity of essential oils of tagetes minuta (asteraceae) against selected plant pathogenic bacteria
(University of Nairobi, 2016)The objective of this study was to determine the chemical composition and antibacterial activity of essential oils (EOs) of Tagetes minuta against three phytopathogenic bacteria Pseudomonas savastanoi pv. phaseolicola, ... -
Analysis of the levels of selected heavy metals in the vicinity of a lead batteries Recycler plant in Athi-River, Kenya
(University of Nairobi, 2016)The levels of heavy metals in the environment have been increasing in the recent past as a result of human activities. Since toxicity of heavy metals is widely known, their speciation is increasingly attracting attention. ... -
Synthesis and characterization of green tea synthesized iron nanocatalysts for brymothymol blue (BTB) degradation
(University of Nairobi, 2016)Iron nanoparticles (FeNPs) were prepared from the green tea extracts at different temperatures through green synthesis procedure and characterized by various physicochemical techniques like UV-Visible spectroscopy, FTIR ... -
Evaluation of the factors controlling concentration of Non-condensable gases and their possible impact on the performance of geothermal systems: case study of Olkaria wells in the Kenyan Rift Valley
(University of Nairobi, 2016)The Olkaria geothermal field is located in the Kenyan Rift valley, about 120 km from Nairobi. Development of geothermal resources in the Olkaria area, a high temperature field, started in the early 1950s. In the subsequent ... -
Organochlorine Pesticides Residues In Water And Sediment From Rusinga Island, Lake Victoria, Kenya
(University of Nairobi, 2016)This study was carried out to investigate the organochlorine pesticide residue level in representative sites in Rusinga Island of Lake Victoria, Kenya. Sediment and water samples from five sites along the shores of Rusinga ... -
Methane and heavy metals levels from Leachates at Dandora dumpsite, Nairobi county, Kenya
(University of Nairobi, 2016)Rate of urbanization in Kenya has increased, resulting to increased generation of solid and liquid wastes. This has increased the use of landfills and dumpsites to manage wastes as well to reduce pollution. Landfills and ... -
Photocatalytic Degradation Of Acid Orange II Dye On Selected Titanium Dioxide Catalysts
(University of Nairobi, 2016) -
Photocatalytic degradation of acid orange ii dye on selected commercial titanium dioxide catalysts
(University of Nairobi, 2016)Photocatalytic degradation of acid orange II dye in the presence of UV light was investigated using selected commercial TiO2 as photocatalysts. The objective of this study was to determine the rate of photodegradation of ...