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Chemical composition and mosquito repellency of essential oil of Conyza newii propagated in different geographical locations of Kenya
(John Wiley & Sons, 2014)
Previously, essential oil of Conyza newii (Asterale: Asteracea, Oliv. & Hiern) growing in the northern part of West Pokot (35◦E, 1◦N) of Kenya was shown to be highly repellent [RD50 =8.9×10−5 mg/cm2, 95% confidence interval ...
Thalictramine, A new alkaloid from Thalictrum rhyncocarpum (Dill & Rich) and its anti-bacterial activity
(2014)
Thalictrum rhyncocarpum, a creeping plant with fern-like leaves, is used in herbal medicine to treat various
infections in parts of Africa. Previously, we reported In-vitro anti-bacterial activity of different parts (root, ...
Combustion synthesis, characterization and luminescence properties of barium aluminate phosphor
(Elsevier, 2014-09)
The blue-green emitting Eu2+ and Nd3+ doped polycrystalline barium aluminate (BaAl2O4:Eu2+,Nd3+) phosphor, was prepared by a solution-combustion method at 500 °C without a post-annealing process. The characteristic variation ...
Magnetic Concentration of Iron in Lateritic Soils from Kamahuha, Murang’a County, in Kenya using Carbon Monoxide Generated In-Situ
(IJSET, 2014-08)
Chemical and Mineral Analyses of laterites from
selected sites in Kamahuha area of Murang’a County, in the
Republic of Kenya, have been carried out with particular
interest in the levels of iron and the type of minerals ...
Effects of Temperature on Ilmenite During Concentration of Iron in Laterites Using Charcoal and Separation using Magnetic Separation
(IJSET, 2014-06)
Effect of temperature on ilmenite minerals found
in laterites has been investigated. It was found that during
reduction of iron minerals in laterites to magnetite using
charcoal at temperatures of about 500-700oC, ...
Investigating a Prototype Heat Exchanger for Steam Storage
(2014-07)
A coiled tube single pass counter flow heat exchanger was designed and fabricated using locally available materials and its capacity to transmit heat to water to make steam was tested. The heat exchanger was part of ...
A Prototype Steam Storage System for Power Production
(2014-08-01)
Use of solar energy on a large scale is mainly
limited to the sun duration hours, weather conditions and
adequate solar thermal storage technology. A means of
addressing this problem using local materials is provided. ...
Diffusivity of Sulphate Ion in Selected Ordinary Portland and Portland Pozzolana Cements Mortar
(Kenya Chemical Society, 2014)
Cement is subject to degradation by aggressive media. This study investigated sulphate
diffusivity in mortar made from selected Kenyan cements which included three brands of
Ordinary Portland Cements (OPC) and three ...
Roles of doping ions in afterglow properties of blue CaAl2O4:Eu2+,Nd3+ phosphors
(2014-04)
Eu2+ doped and Nd3+ co-doped calcium aluminate (CaAl2O4:Eu2+,Nd3+) phosphor was prepared by a urea-nitrate solution combustion method at furnace temperatures as low as 500 °C. The produced CaAl2O4:Eu2+,Nd3+ powder was ...
Diffusivity of Chloride Ion in Mortar Cubes Made Using Ordinary Portland and Portland Pozzolana Cements
(2014)
Cement is subject to degradation by aggressive media. This study investigated chloride diffusivity in mortar made from Kenyan cements which included three brands of Ordinary Portland Cements (OPC) and three brands of ...