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Now showing items 11-17 of 17
Mathematical analysis of tip speed ratio of a wind turbine and its effects on power coefficient
(2014)
In this paper we estimate the value of tip speed ratio of a wind turbine and evaluate its effects on power coefficient. The power coefficient, Cp, is achieved at a particular tip speed ratio, β, which is specific to the ...
Some new features of photon statistics in a fully quantized parametric amplification process
(Scientific Research Publishing, 2014)
An exact quantum treatment reveals that signal and idler photon number operators are not wellbehaved dynamical operators for studying photon statistics in parametric amplification/downconversion processes. Contrary to ...
Demystifying the Menstruation Process among the Kenyan Girl-Child “A Period of Shame”: A SocioCultural Perspective
(International Journal of Science and Research (IJSR), 2014)
This paper provides a critical review of the challenges faced by the girl child during menstruation period. It provides an
analysis of various literatures based on these challenges and thus focuses on the Kenyan girl ...
Optical properties and Raman studies of amorphous se-bi thin films
(The African Review of Physics, 2014)
Flash evaporated amorphous Se Bi (x = 0, 1, 2, 3, and 4 at. %) thin films of 350 ± 10 thickness have been investigated in the wavelength range of 200nm − 3000nm. It is found that the effect of increasing bismuth content ...
A study of the Equatorial Ionosphere over Nairobi During selected magnetically disturbed and quiet times for the year 2009 Using co-located instruments
(IJARPS, 2014)
Investigation of the behavior of the Equatorial Ionosphere over Nairobi-Kenya within the East Africa region is done using co-located instruments, that is, SCINDA-GPS system and a Magnetometer ( MAGDAS). This was done for ...
Complex Spacetime Frame: Four-Vector Identities and Tensors
(Scientific Research Publishing, 2014)
This paper provides derivation of some basic identities for complex four-component vectors defined in a complex four-dimensional spacetime frame specified by an imaginary temporal axis.
The resulting four-vector identities ...
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 ...