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Now showing items 1261-1270 of 1307
Synthesis and characterization of silver nanoparticles using tea extracts and their application in nanobiosensors
(2012)
A facile reduction approach with silver nitrate, AgN03, solution and tea extracts led to polydisperse silver nanoparticles, tea-AgNPs, at room temperature. A mixture of AgN03 solution and tea extracts, extracted at 90°C, ...
Evaluation of selected soil fertility management interventions for suppression of fusarium spp. in a maize and beans intercrop
(2011)
Fusarium root rot of maize and beans is a common problem in Taita District, Kenya causing economic losses to the small scale farmers. The pathogen attacks maize and beans at all growth stages causing rot at the seedling ...
Cytotoxic and antioxidant flemingins g-p from the leaves of flemingia grahamiana
(University of Nairobi, 2014)
The known flemingins A-C (1-3) and nine new chalcones, named flemingins G-O (4-12), along with deoxyhomoflemingin (13) and emodin (14) were isolated from a leaf extract of Flemingia grahamiana. The isolated chalcones were ...
Additional Cooking Fuel Supply And Reduced Global Warming Potential From Recycling Charcoal Dust Into Charcoal Briquette In Kenya
(University of Nairobi, 2014-06)
Rising demand for energy is one of the major challenges facing the world today and charcoal is a principal fuel in Kenya. Faced with energy poverty many poor households turn to briquette making. This study assessed the ...
East African mid-Holocene wet-dry transition recorded in palaeo-shorelines of Lake Turkana, northern Kenya Rift.
(University of Nairobi, 2012-05-15)
The ‘wet’ early to mid-Holocene of tropical Africa, with its enhanced monsoon, ended with an abrupt shift toward drier conditions and was ultimately replaced by a drier climate that has persisted until the present day. The ...
Screening of large collections of plant associated bacteria for effective plant growth promotion and colonisation
(University of Nairobi, 2013)
The use of potent and effective live microbial biofertilisers in agricultural has significant
potential to reduce the costs of crop production and in mitigating greenhouse gas emissions
and water pollution associated ...
Wiring Kenyan languages for the global virtual age: An audit of the human language technology resources.
(University of Nairobi, 2015-02-02)
Whereas we recognize the advancement of computing a
nd internet technologies over the years and
its impact in the areas of health, education, gover
nment, etc., there is increasing cognizance that th
e
languages ...
Hyperspectral remote sensing of evaporate minerals and associated sediments in Lake Magadi area, Kenya
(University of Nairobi, 2012-02)
Pleistocene to present evaporitic lacustrine sediments in Lake Magadi, East African Rift Valley, Kenya were studied and mapped using spectral remote sensing methods. This approach incorporated surface mineral mapping using ...
Quantifying the intensity of permethrin insecticide resistance in Anopheles mosquitoes in western Kenya.
(University of Nairobi, 2017)
BACKGROUND:
The development and spread of resistance among local vectors to the major classes of insecticides used in Long-Lasting Insecticidal Nets (LLINs) and Indoor Residual Spraying (IRS) poses a major challenge to ...