Observing the new Moon is of vital importance for Muslims, Jews and Hindus. In previous work we were able to observe the crescent at about 4th above the horizon at the time of sunset,Herein. We are reporting the success ...
Tannery effluent is characterized not only by heavy loads an organic sludge but also with toxic heavy metals especially chromium ions. Chromium is considered an important source of contamination due to large volume of ...
In the present paper, the potential of solar photovoltaic (PV) technology for water pumping in the K.S.A has been studied by analyzing long-term solar radiation data. To achieve this task, five geographically distinct sites ...
Kullab, Abielyazied M.; Khalfalla, M. G.(2008-01-01)
Suggestions for improving the efficiency and power production of a horizontal axis, stall-regulated wind turbine is proposed in this paper. Changing the local roughness on the blade surface to improve the wind turbine ...
Alnaser, W. E.; Al-buflasa, H.; Isa, A. M.(2008-01-01)
The amount of heat received on 21 different cities from different countries in Northern and Southern hemisphere were analyzed and modeled .This was made by taking the annual average of temperature from 1998 to 2005 for ...
In the present paper, use will be made of Thorne's series solution of Lambert problem to develop an orbit determination method valid for hyperbolic and elliptical orbits. Numerical illustrations are given.
The performance of a single slope solar still using different operational parameters was studied experimentally. The increase in still productivity to about 33% was achieved when the wind speed increases by 50%, this due ...