Faculty of Science & Technology (FST): Recent submissions
Now showing items 1221-1240 of 4284
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Case of G!S in Food Emergency Response:Case of G!S in Food Emergency Response
(University of Nairobi, 2013-09)This paper presents a framework for food emergency response and demonstrates the use of Geographical Information Systems as a solution to planning for and managing food emergencies.This is particularly critical in countries ... -
3-Hydroxyisoflavanones From The Stem Bark Of Dalbergia Melanoxylon: Isolation, Antimycobacterial Evaluation And Molecular Docking Studies
(University of Nairobi, 2013)Two new 3-hydroxyisoflavanones, (S)-3,4′,5-trihydroxy-2′,7-dimethoxy-3′-prenylisoflavanone (trivial name kenusanone F 7-methyl ether) and (S)-3,5-dihydroxy-2′,7-dimethoxy-2″,2″-dimethylpyrano[5″,6″:3′,4′]isoflavanone ... -
Larvicidal Activities Of Extracts And Rotenoids From Millettia Usaramensis Subspecies Usaramensis On Aedes Aegypti (Linnaeus, 1762) (Diptera: Culicidae)
(University of Nairobi, 2014)The dichloromethane/methanol (1:1) extract of the stem bark of Millettia usaramensis subspecies usaramensis was tested for its larvicidal activity against the 4th instar Aedes aegypti larvae and demonstrated activity with ... -
8-Hydroxy-6-methylxanthone-1-carboxylic acid and 6',8-O-dimethylknipholone from the roots of Bulbine frutescens
(University of Nairobi, 2014)Phytochemical investigation of the dichloromethane/methanol (1:1) extract of the roots of Bulbine frutescens led to the isolation of a new xanthone, 8-hydroxy-6-methylxanthone-1-carboxylic acid (1) and a new phenylanthraquinone, ... -
Density-funtional study of Luminescence in Polypyridine ruthenium complexes
(university of Nairobi, 2013) -
Dye-Sensitized and Amorphous Silicon Photovoltaic (PV Devices' Outdoor Performance: A Comparative Study
(2013)The performance of a dye-sensitized solar module (DSSM) has been investigated under different air mass (AM), irradiance intensity and temperature conditions in Nairobi, Kenya. The good response of the DSSM to short wavelength ... -
Low Frequency Dielectric Loss Measurements On Al2o3 Films
(University of Nairobi, 1982-08)Measurements of the dielectric loss in thin Al2O3 films at low and very low frequencies are reported. A very simple but efficient experimental technique for measuring the loss tangent was used in the study. A Debye-type ... -
Electrophoretic deposition of Ti02/Nb20S composite electrode thin films for photovoltaic application
(2013)Nano-sized powders of titanium dioxide (TI02) and niobium (v) oxide (Nb2O5) were used to fabricate Ti02/Nb205 composites thin films by electrophoretic deposition (EPD) technique In EPD technique (hinged particles suspended ... -
The complementarity of Dye-sensitized and Amorphous silicon photovoltaics in field application in the tropical
(University of Nairobi, 2013) -
Changes In Genotypes Of Plasmodium Falciparum Human Malaria Parasite Following Withdrawal Of Chloroquine In Tiwi, Kenya
(University of Nairobi, 2012-09)Chloroquine (CQ) drug was withdrawn in 1998 as a first-line treatment of uncomplicated malaria in Kenya. This was in response to resistance to the drug in Plasmodium falciparum malaria parasite. Investigations were conducted ... -
1-Tetralinyl as carboxamine-protecting group for asparagine and application to N-a-t-Butyloxycarbonyl (Boc) solid-phase pentide synthesis of oxytocin
(university of Nairobi, 2014)Oxytocin, a nonapeptide amide, was synthesized on a benzhydryl-resin using the Boc strategy. Benzyl group was used in the protection of sulfhydryl group of cysteine and tyrosine side-chain. Benzhydryl and tetralinyl ... -
Fabrication and characterization of Ti02/In(OH),SylSnS composite ETA solar cell
(University of Nairobi, 2013) -
Formulation of a vector SIS malaria model in a patchy environment with two age classes.
(University of Nairobi,, 2014-01-22)We formulate an SIS model describing transmission of highland malaria in Western Kenya, the host population is classified as children, age 1- 5 years and adults, above 5 years. The susceptibility and infectivity of an ... -
Homogeneous saturation of the 6328 Å neon laser transition due to collisions in the weak collision model
(University of Nairobi, 1978-08)Measurement of the collision broadened lineshapes of the 6328 Å Ne laser transition in absorbing 20Ne and amplifying 7 : 1 3He : 20Ne discharges indicate that the transition saturates with a Doppler component as well as ... -
Cross Sections For Dephasing Collisions In A Helium-neon Discharge
(University of Nairobi, 1974-11)A single-mode HeNe laser, emitting at 6328 Å, was used to determine the dephasing collision cross sections of Ne 3S2 with ground state Ne and ground state He. We calculate View the MathML source and View the MathML source. -
The Boundary Between The Northern And Southern Sq Current Loops Over The African Continent
(University of Nairobi, 1984-04)Geomagnetic declination variations of five quiet days in January, April, July and October 1969 are studied, based on observations from 11 African observatories. The variations are produced by electric current systems in ... -
Some properties of ionospheric irregularities as deduced from recordings of the San Marco II and BE-B satellites
(University of Nairobi, 1970-07)Recordings of scintillations on signals received at Nairobi from satellites San Marco II and BE-B have been analysed by correlation and dispersion methods, the correlation method equations being derived in a simpler way. ... -
Negative magnetic anomaly associated with Mount Kenya
(1974-08-16)MOUNT Kenya is a large central volcano just south of the equator in central Kenya. It rises to a height of 5,199 m above sea level. The base of the volcano covers an area of approximately 7,000 sq km, and is roughly circular ...
