Faculty of Science & Technology (FST): Recent submissions
Now showing items 3221-3240 of 4283
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Westwards moving disturbances in the Southwest Indian Ocean
(Department of Medical Microbiology, University of Nairobi, Kenya., 1989)The First Garp Global Experiment data collected during 1979 at sea level and 850 mb level have been used to examine the origin and characteristics of the westwards moving disturbances in the western Indian Ocean. From the ... -
Optical Characterization of Copper Oxide Thin Films Prepared By Reactive Dc Magnetron Sputtering For Solar Cell Applications
(Department of Physics, University of Nairobi,Pwani university college, physics departmentKenyatta University, physics department, 2012)Cu2O thin films have been deposited using reactive dc magnetron sputtering technique using an Edward Auto 306 Magnetron Sputtering System. Transmittance and reflectance data in the range 300 nm-2500 nm were obtained ... -
Impacts of Climate Variability on Power Genera on within the 7-Forks Dams in the Tana River Basin
(Department of Meteorology University of Nairobi, 2010)The 7-Forks Dams are located in the upper Tana River Basin and form extremely important components of the Tana River System. The Masinga Dam serves as a storage reservoir, controlling hydrology through a series of ... -
Regional Climate Information for Risk Management
(Department of Meteorology, Kenya, University of NairobDepartamento de Geofisica, Santiago, University of ChileMeteorological Climatological and Geophysical Agency, Jakarta, IndonesiaWorld Bank, Washington DC, United States, 2010)Several regions of the world have developed capability in providing services on climate information for risk management, but there are still gaps in service delivery due to inadequate information regarding the needs within ... -
Assessment and Utilization of Wind Power in Kenya – A Review
(Department of Meteorology, University of Nairobi, 2008)Wind energy is one form of free renewable resource that is being vigorously pursued by many countries of the world including Kenya. It is a cheap, clean and non-polluting energy sources that may finally be used to replace ... -
Deterministic and Probabilistic prediction approaches in Seasonal to Inter-annual climate forecasting
(Department of Meteorology University of Nairobi, 2002)Many countries in Africa are prone to extreme weather and climate events and these events have in the past had major negative impacts on various sectors of the economy including agriculture, health, food security, energy ... -
Effect of Post-Treatment Temperature on the Insecticidal Activity of Melia volkensii (Gurke) Fruit Extract Against the African Migratory Locust Locusta migratoria (Reiche & Fairmaire)
(College of Biological Sciences, University of Nairobi, 2002)The influence of post- treatment temperature on the insecticidal activity of Melia volkensii (Gurke) fruit extract against the African migratory locust, Locusta migratoria (Reiche & Fairmaire) is reported. In laboratory ... -
"DESIGN AND FABRICATION OF A MICROPROCESSOR - BASED CAR LENGTH MONITORING SYSTEM". A dissertation submitted to the Department of Physics, Kenyatta University.
(Department of Physics, University of Nairobi., 2008) -
Effect of Post-Treatment Temperature on the Insecticidal Activity of Neem, Azadirachta Indica A. Juss. Seed extract on Schistocerca Gregaria (Forskal): A preliminary Report
(Department of Zoology, University of NairobiResearch and Extension Division, Egerton University, 2000)The influence of post-treatment temperature on the insecticidal activity of Azadirachta indica (A. Juss) seed extract against the desert locust, Schistocerca gregaria (Forskål) is reported. In tests on adults, the toxicity ... -
Potential for Melia volkensii fruit extract in the control of locusts
(College of Biological Sciences, University of Nairobi, 1996)Fruits from the East African tree, Melia volkensii (Gurke) contain terpenoid compounds with well-establishcd insecticidal activity. At high doses a concentrated M. volkensii extract (Mv) causes death or lack of physical ... -
Antiplasmodial and larvicidal flavonoids from Derris trifoliata
(Department of Chemistry, University of Nairobi,School of Biological Sciences, University of NairobiUnited States Army Medical Research Unit-Kenya, MRU 64109, APO, AE 09831-4109, USADepartment of Chemistry, Makerere University, P.O. Box 7062, Kampala, UgandaInstitut für Chemie, Universität Potsdam, P.O. Box 60 15 53, D-14415 Potsdam, Germany, 2009)From the dichloromethane-methanol (1:1) extract of the seed pods of Derris trifoliata, a new flavanone derivative (S)-lupinifolin 4´-methyl ether was isolated. In addition, the known flavonoids lupinifolin and rotenone ... -
Factors affecting yield of essential oil from Clevenger distillation of chamomile flowers
(Department of Chemistry, 2003) -
7a-O-methyldeguelol, a modified rotenoid with an open ring-C, from the roots of Derris trifoliata
(Department of Chemistry, University of NairobiDepartment of Zoology, University of Nairobi,Institut für Chemie, Universität Potsdam, P.O. Box 601553, D-14415 Potsdam, Germany, 2005-03)From the acetone extract of the roots of Derris trifoliata an isoflavonoid derivative, named 7a-O-methyldeguelol, a modified rotenoid with an open ring-C, representing a new sub-class of isoflavonoids (the sub-class is ... -
Two unusual rotenoid derivatives, 7a-O-methyl-12a-hydroxydeguelol and spiro-13-homo-13-oxaelliptone, from the seeds of Derris trifoliata
(Department of Zoology, University of Nairobi,Department of Chemistry, University of NairobiInstitut für Chemie, Universität Potsdam, P.O. Box 601553, D-14415 Potsdam, Germany, 2006-05)The crude methanol extract of the seeds of Derris trifoliata showed potent and dose dependent larvicidal activity against the 2nd instar larvae of Aedes aegypti. From this extract two unusual rotenoid derivatives, a ... -
Insecticidal activity of extracts derived from different parts of the mangrove tree rhizophora mucronata (rhizophoraceae) lam. Against three arthropods
(Department of Zoology, University of Nairobi, 2001)The insecticidal and antifeedant activity of extracts derived from different parts of the mangrove tree Rhizophora mucronata (Rhizophoraceae) Lam. is reported. The 70% ethanol extracts of leaves, bark, stem wood and pith ... -
Agent Based Adaptive Learning Model for Intermittent Internet Connection Conditions
(School of computing and informatics, University of Nairobi, 2012) -
M-Learning Support Services for Corporate Learning
(School of computing and informatics, University of Nairobi, 2013) -
A Monitoring and Evaluation Framework for the Integration of ICTs in Teaching and Learning in Primary Schools in Kenya
(School of computing and informatics, University of Nairobi, 2013)This research project presents a research study on Information and Communication Technologies (ICTs) integration in primary school education as it sought to develop a Monitoring and Evaluation Framework for the integration ... -
Post-traumatic stress disorder: Case report
(College of Biological Sciences, University of Nairobi, 2000)Following exposure to a major traumatic event like the August seventh 1998 Nairobi bomb blast various reactions occur, some of which result in stress-related psychiatric disorders. We have described one such case, and ... -
Optimal Vaccination Strategies in an SIR epidemic model with time scales
(School of Mathematics, University of Nairobi, 1998)