Faculty of Science & Technology (FST): Recent submissions
Now showing items 941-960 of 4283
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Constituents of the Roots and Leaves of Ekebergia capensis and Their Potential Antiplasmodial and Cytotoxic Activities
(2014)A new triterpenoid, 3-oxo-12β-hydroxy-oleanan-28,13β-olide (1), and six known triterpenoids 2–7 were isolated from the root bark of Ekebergia capensis, an African medicinal plant. A limonoid 8 and two glycoflavonoids 9–10 ... -
Antioxidant Activity, Cellular Bioavailability, and Iron and Calcium Management of Neuroprotective and Nonneuroprotective Flavones
(2014)Few studies have been undertaken on the relationship of the structure of flavones and neuroprotection. Previously, we described the structural determinants of the neuroprotective activity of some natural flavones in ... -
Tracking the mutual shaping of the technical and social dimensions of solar-powered mosquito trapping systems (SMoTS) for malaria control on Rusinga Island, western Kenya
(University of Nairobi, 2014)Background There has been increasing effort in recent years to incorporate user needs in technology design and re-design. This project employed a bottom-up approach that engaged end users from the outset. Bottom-up ... -
Occurrence of rift valley fever in cattle in Ijara district, Kenya
(2014)Ijara district in Kenya was one of the hotspots of rift valley fever (RVF) during the 2006/2007 outbreak which led to human and animal deaths causing huge economic and public health losses. The main constraint in the control ... -
Exploring the High-altitude Nuclear Detonation and Magnetic Storms
(University of Nairobi, 2014)The High-altitude Nuclear Detonation (HND) experiments were carried between 1958/62 by both the United States of America (USA) and the former Union of Soviet Socialist Republics (USSR); the Starfish HND resulted in many ... -
Electromagnetic Radiation Energy and Planck,'Constan
(University of Nairobi, 2014-11)ABSTRACT -- The components of Electromagnetic Radiation (EM-R) mechanism are analyzed; these includes the Flipping Time (), and the Flipping Frequency (); the condition initiating F-F and the formation of EM-R ... -
Adsorption of Dursban (Chlorpyrifos) Pesticide by Loam Soil from Limuru, Kenya: Apparent Thermodynamic Properties
(University of Nairobi, 2014)The adsorption phenomenon of chlorpyrifos by suspended loam soil particles from Limuru, Kenya in an aqueous solution was studied using a model which assumes the adsorption/ desorption relations: nSX S nX ⇔ + , ] [ ] /[] ... -
Effect of temperature on the life history parameters of noctuid lepidopteran stem borers, busseola fusca and sesamia calamistis
(University of Nairobi, 2014-10-06)The influence of temperature on the development, mortality, fecundity and life table parameters of two important noctuid African cereal pests, Busseola fusca and Sesamia calamistis was investigated under laboratory conditions. ... -
Modulation of partially purified rat liver mitochondrial carbamoyl phosphate synthetase I using two glutamic acid analogues
(University of Nairobi, 2014-10)Mitochondrial c arbamoyl ph osphate synthetase I (CPS I) i s the first enzyme involved in urea biosynthesis in ureotelic mammals and has an absolute requirement for N - acetyl - L - glutamate (NAG) or ... -
Suppression of nociception by Solanum incanum (Lin.) Diclomethane root extract is associated anti-inflammatory activity
(University of Nairobi, 2014)Solanum incanum is an herb that is an important African folklore remedy for several ailments such as inflammation, pain, fever, microbial diseases, and neoplastic disorders. The herb possesses several pharmacological ... -
An investigation of the transport and dispersion of atmospheric pollutants over Nairobi City
(University of Nairobi, 2014)Current rapid deterioration of air quality in most urban can be majorly attributed to ongoing urbanization. This study simulates air pollutant dispersal over Nairobi city using Hybrid Single Particle Lagrangian ... -
The source of the interplanetary magnetic field (IMF) measured by pioneer V
(University of Nairobi, 2014)Solar atmosphere expansion into interplanetary space was a dominant theoretical models when Pioneer-V was launched in March 1960, to determine among others the source of measured anomalous Interplanetary Magnetic Fields ... -
The Electromagnetic Radiation Mechanism
(University of Nairobi, 2014-07)This paper suggested a mechanism for Electromagnetic Radiation (EM - R); the mechanism is based on the Flip - Flop (F - F) of combined Circular Magnetic Field (CMF) and Electric Field (EF) produced by energetic ... -
Omega 3 and omega 6 fatty acids in human and animal health: An African perspective.
(University of Nairobi, 2014-12)Lipids are essential for plant and animal development, growth and nutrition and play critical roles in health and reproduction. The dramatic increase in the human population has put increasing pressure on human food sources, ... -
Multiple Endemic Solutions in an Epidemic Hepatitis B Model without Vertical Transmission
(University of Nairobi, 2014)This paper examines the dynamics of Hepatitis B via a Susceptible Exposed Infectious Recovered (SEIR) type epidemic model. Previous studies have shown that Hepatitis B is characterized by multiple endemic solutions, a ... -
Evaluation of textile substrates for dispensing synthetic attractants for malaria mosquitoes.
(University of Nairobi, 2014)Background The full-scale impact of odour-baited technology on the surveillance, sampling and control of vectors of infectious diseases is partly limited by the lack of methods for the efficient and sustainable dispensing ... -
Comparative evaluation of methods used for sampling malaria vectors in the Kilombero valley, south eastern Tanzania
(University of Nairobi, 2008)To monitor malaria transmission, effective sampling methods for host seeking vectors are necessary. The suitability of these methods can be determined by field measurements of their trapping efficiencies. We compared the ... -
Livestock Farmers’ Perception on Generation of Cattle Wastebased Biogas Methane: the Case of Embu West District, Kenya
(2014)Perception of livestock farmers on the generation of cattle waste-based biogas methane was evaluated in this study. The study was carried out in Embu West district in Kenya. A random sampling technique was used to gather ... -
Influence of surface passivation on optical properties of spray pyrolysis deposited Pd-F:SnO2
(Science Publishing Group, 2014)Pd-F:SnO2 thin films have been prepared by spray pyrolysis technique using an alcoholic precursor solution consisting of stannic chloride (SnCl4.5H20), ammonium fluoride (NH4F) and palladium chloride (PdCl2). Optimization ... -
Optimization of acid activation conditions for Athi River Bentonite clay and application of the treated clay in palm oil bleaching
(2014)Athi River bentonite clay was activated using Sulphuric acid at various acid concentrations, clay-acid ratio, temperature and contact times. Optimization was based on palm oil bleaching performance. the chemical compositions ...