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The effect of two substituents on different organoselenides and tellurides to form new charge-transfer complexes
(
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 ...
Lumping Processes of Periodic ARMA Processes
(
Qatar University
, 2004 , Article)
In this article various lumping processes are defined for periodic ARMA (PARMA) processes, namely, the forward, the backward and the cyclic lumping processes. The inter-relations between the parameters of these lumping ...
Preparation, Characterization and Structural Determination of some coordination compounds of quadridentae thiosemicarbazone
(
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 ...
Strain Broadening of E.P.R. Linewidths in Fe/Mgo Single Crystals and Powders
(
Qatar University
, 2004 , Article)
The E.P.R. linewidth of the M= + 1/2 <-» -1/2 transition of Fe3+ spectrum of Fe/MgO single crystals and powders have been measured at 9 GHz before and after annealing. The nominal iron concentrations ranged from 310 to ...
Application of Stripping Voltammetry for the Determination of Cadmium, Lead, Copper and Zinc in Yemani soils and Vegetables
(
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 ...
On the Classical Multicolor Ramsey Number R(3,3,3)
(
Qatar University
, 2004 , Article)
In this paper, we are interested in the problem of evaluation of the classical multicolor Ramsey number i?(3,3,3). We first convert it successfully into a system of clauses of 3-literals each, i.e., a 3-SAT instance. We ...
حكم المحكمين الأجنبي ونفاذه في القانون القطري: دراسة مقارنة
(
Qatar University
, 2004 , Article)
المؤتمر العالمي حول الموهبة والإبداع في أستراليا
(
Qatar University
, 2004 , Article)
دراسة استطلاعية لآراء عينة من عضوات هيئة التدريس بكلية التربية بجامعة الملك عبد العزيز حول حلقات النقاش العلمية (السيمينارات)
(
Qatar University
, 2004 , Article)
هدفت هذه الدراسة إلى التعرف على آراء عضوات هيئة التدريس بكلية التربية بجامعة الملك عبد العزيز بالمدينة المنورة حول حلقات النقاش العلمية، إحدى أساليب التطوير المهني، من حيث دورها في تطوير الكلية، الاستفادة الشخصية منها، أهم ...
الامام الشوكاني وعنايته بعلم الحديث
(
Qatar University
, 2004 , Article)