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Dewetting Rheology for Determining Viscoelastic Properties of Nonequilibrated Thin Polymer Films
(American Chemical Society, 2019)
We performed systematic dewetting experiments on isotactic poly(para-methylstyrene) (iPpMS) films to explore the temperature dependence of the viscoelastic behavior of these films. We quantified the amount of residual ...
Investigation of the Effect of Film Thickness on the Optical Properties of Amorphous Se85-xTe15Sbx Thin Films
(Africa Journal of Physical Sciences, 2014)
Amorphous thin films of Se85-xTe15Sbx (x = 0.0, 0.5, 2.5, and 5.0 at. %) deposited by flash evaporation technique, have been investigated in the wavelength range of 500nm-3000nm. It is found that the effect of increasing ...
Nitrogen Doping of Hexagonal and Cubic Ge2Sb2Te5 Nanocrystals: An Ab Initio Study
(World Scientific Publishing Company, 2018)
The effect of nitrogen doping on the structural, electronic and optical properties of hexagonal and cubic Ge2Sb2Te5 (GST) has been investigated from first principles. The nitrogen content was set to 10 at.% and 25 at.%, ...
Antioxidant activities oftriacontanyl-E-cinnamoatesmetabolites from Caesalpinia volkensii root bark extracts
(Research gate, 2017)
Natural antioxidants have been reported to prevent oxidative damage caused by free radicals generated during biochemical processes
and thus useful in prevention of several degenerative diseases. The present study evaluated ...
Effect of Reverse Bias on Dye-Sensitized Technology: Lessons for Application in PV-Integrated Textile Fabric Designs Useable in Wajir, Vihiga, Kitui and Kajiado Counties in Kenya
(Journal of Technology Innovations in Renewable Energy, 2018)
This paper reports on the effect of reverse bias (RB) on dye-sensitized solar cells (DSSCs) that were investigated outdoor in Wajir (1o4450 North, 40o 4 8 East), Vihiga (35o0 East, 0o15 North), Kitui (3o 0 South, 37o 50 ...
Energy Resources in East Africa
(Springer, Cham, 2015)
When talking about East Africa, traditionally this refers to the states of Kenya, Uganda and Tanzania with a combined population of over 120 million people in 2014. The three countries have a long history of association ...
Technology Options for the Built Environment in Kenya: Dye- Sensitized and Amorphous Silicon Photovoltaics for Application in NZE Buildings
(Bentham Science Publishers Ltd., 2017)
Background The performance of a Dye-Sensitized Solar Module (DSSM) has been investigated under different outdoor air mass (AM), irradiance intensity and temperature conditions in Wajir, Kitui, Vihiga and Kajiado Counties ...
Global Energy Perspective
(Springer, Cham, 2016)
“Energy is everywhere in different forms and it is needed by everyone and yet it is not always available for everybody. If you have it, you must protect it. If you do not have it, you must get it at any cost. Which other ...
Potential of novel phytoecdysteroids isolated from Vitex doniana in the treatment depression: Involvement of monoaminergic systems
(Elsevier, 2014-12-01)
Vitex doniana Sweet (Verbanaceae) is used in traditional African medicine for the treatment of neurological disorders including depression. In our previous studies, three new phytoecdysteroids were isolated from methanol ...
Phytochemical analysis of some selected plants and families in the university botanic garden Of Maseno, Kenya
(IOSR journal of pharmacy and biological sciences, 2017)
There has scarcely been any attempt to carry out phytochemical analysis on various insitu and ex situ plants conserved at the University Botanic Garden and no research has been done to document the educational and economic ...