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السجلات المعروضة 41 -- 48 من 48
The Optical properties of Cadmium Stannate (Cd2SnO4) Thin Films Prepared by Chemical Spry Pyrolysis Technique
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Qatar University
, 2004 , Article)
Thin films of cadmium stannate were prepared using thermal chemical spray pyrols: Cadmium stannate' solution (0.2M) was prepared by dissolution of CdCl25H2O in C2H5OH tion of SnCl23H2O in CH3COOH at molar 2:1, respectively. ...
Some Inferential Problems in Finite Population Sampling
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Qatar University
, 2004 , Article)
We review some results in problems of estimating a finite population total (mean) through a sample sur¬vey. Section 2 considers inference under a fixed population model and Section 3 addresses the same prob¬lem when the ...
On Symboloic Reasoning and Direct Inference Principle
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Qatar University
, 2004 , Article)
This paper discusses an approach using the M-valued symbolic logic with syllogistic reasoning and direct inference principle (reasoning from statistical information to conclusions about individuals), to manipu¬late statistical ...
Z1, center orientations and adsorption of atomic halogens at the (001) surfaces of Alkaili Chloride Crystals: DFT Calculations.
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Qatar University
, 2004 , Article)
An attempt has been made to examine the relative stabilities of Z, center orientations at the surfaces of
Be2+, Mg2+ and Ca2+ doped LiCl, NaCl and KC1 ionic crystals as well as the effects of Z, center on the
adsorption ...
Preparation, Characterization and Structural Determination of some coordination compounds of quadridentae thiosemicarbazone
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Qatar University
, 2004 , Article)
New transtion metal complexes of Co", Ni" and Cu" with benzil bis 4-(p-Chlorophenyl-thiosemicarbazone) and benzil bis 4-(p-Bromophenyl-thiosemicarbazone) were synthesized. Attempts were made to ascertain their probable ...
Application of Stripping Voltammetry for the Determination of Cadmium, Lead, Copper and Zinc in Yemani soils and Vegetables
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Qatar University
, 2004 , Article)
Heavy metals contents in the solutions from acid digestion of Yemeni soils and vegetables were deter¬mined by differential pulsed anodic stripping voltammetry. The geometric mean for Cd, Pb, Cu and Zn concentrations for ...
الصندوق المالي المدرسي في المدارس الثانوية بدولة الكويت
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Qatar University
, 2004 , Article)
تحاول هذه الدراسة التعرف على المشكلات التي تواجه الصندوق المالي المدرسي في المدارس الثانوية بدولة الكويت، وكذلك معرفة وجهات نظر المبحوثين باختلاف نظام الدراسة أو نوع المدرسة أو المنطقة التعليمية أو المسمى الوظيفي لمن يقوم ...
The effect of two substituents on different organoselenides and tellurides to form new charge-transfer complexes
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Qatar University
, 2004 , Article)
Different organotellurides and selenides were prepared as electron donors and reacted with p-Benzoquinone (p-BQ) and m-Dinitrobenzene (m-DNB) as electron acceptors .
The resulted molecules were considered as new ...