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السجلات المعروضة 31 -- 40 من 44
The Flora of The State of Qatar: Its History and Present-Day Status
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Qatar University
, 2005 , Article)
The history of botanical exploration in the State of Qatar is of recent origin. Various collections culminated in 2 major Floras for the State of Qatar in 1981 and 1983. Since then, further collections and focus on several ...
p-cds/n-Si Anisotype Heterojunction solar cells wih Efficiency of 6.4%
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Qatar University
, 2005 , Article)
In the present paper, p-CdS/n-Si heterojunction solar cells are prepared for the first time by the spray pyrolysis technique. Using such low-cost method, cells with 6.4'/o AM1 conversion efficiency ina O.ZZ fill factor ...
The Optical and Electrical Properties of Low Density Polyethylene Films in CuSo4 Solution
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Qatar University
, 2005 , Article)
The optical and electrical properties of pure and treated low density polyethylene (LDpE) were investigated. These measurements have been carried out at various times of immersion for LDPE films in 10% solution of CuSO+. ...
Evaluation of Electron Swarm Parameters in SF6 Using Monte Carlo Method
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Qatar University
, 2005 , Article)
The motion of electrons in sulfur hexafluoride (SFo) in uniform electric fields is simulated using a Monte Carlo method. The swarm parameters are evaluated and compared with experimental results of drift velocity, electron ...
Corrosion of n-GaAs/aqueous Photoelectrochemical Cell
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Qatar University
, 2005 , Article)
A combination of electrochemical studies, scanning electron microscopy, SEM, and light reflectivity measurements reveals information about the corrosion of enlightened n-GaAs in various aqueous electrolytes. The corrosion ...
Experimental Investigation of the N-Pbs/P-Si Heterojunction Band Lineup with I-V and C-V Measurements
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Qatar University
, 2005 , Article)
In this paper we present experimental investigation of band lineup of near ideal PbS/Si heterojunction diode using I-V and C-V measurements. The C-V measurements show that the fabricated diodes were abrupt type, and the ...
Investigation of the Fouling Mechanisms in the Heat Exchangers of a Hydrotreater
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Qatar University
, 2005 , Article)
The problem of fouling on heat exchanger surfaces has been one of the major unresolved problems of the hydrotreatment unit at the Homs oil refinery in Syria. In this unit, a feed stream of straight-run naphtha is preheated ...
Reproducing Formula and Algorithm of a Familv of Biorthonormal Wavelets
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Qatar University
, 2005 , Article)
In this paper we present a family of biorthonormal wavelets generated by a MRA orthonormal wavelet, which possesses two arbitrary parameters. Then we discuss new expressions of reproducing kernel as well as the corresponding ...
HUMAN CAPITAL FORMATION : THE CASE OF QATAR
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Qatar University
, 2005 , Article)
This paper is an exploratory study that investigates human capital (HC) formation in the state of Qatar. It is carried out with the intention to provide an insight into such a process among Qataris and to ascertain how ...
Effectiveness of monetary and fiscal policies: the case of Qatar
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Qatar University
, 2005 , Article)
The controversy surrounding the effectiveness of monetary and fiscal policies is a long way from being settled. During the last three decades, oil revenues have contributed significantly to economic growth and development ...