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Now showing items 1281-1290 of 1381
Magnetic Studies on High - Tc Bi - Pb- Sr - Ca - Cu - O Ceramics
(
Qatar University
, 1997 , Article)
The superconducting material with a nominal composition BiI 6 Pb0 4 Sr2 Ca2 Cu3 Ox has been recently synthesized and characterized by the authors using the Q- factor method. The Q-factor data reported in this work shows ...
Improvement Of The Piecewise Approximation Methods
(
Qatar University
, 1996 , Article)
A piecewise approximation method is described for planar curves. The order of classical piecewise approximations is improved. The method exploits the freedom in the
choice of the parametrization and rises the approximation ...
Analysis Of Al Diffusion In Molten Germanium Induced By Pulsed Nd: Yag Laser Using Sims Technique
(
Qatar University
, 1996 , Article)
In this work the volume diffusion coefficients and profile distribution of Al impurities in molten germanium have been measured using secondary-iron mass spectroscopy (SIMS) technique. Diffusion is achieved with aid of ...
A Spreadsheet Teaching Tool For Analysis Of Pipe Networks
(
Qatar University
, 1997 , Article)
Spreadsheets are used widely in engineering to perform several analysis and design calculations. They are also very attractive as educational tools due to their flexibility and efficiency. This paper demonstrates the use ...
التحصيل اللغوي لدى تلاميذ المرحلة الإبتدائية
(
Qatar University
, 1990 , Article)
التحصيل اللغوي لدى تلاميذ المرحلة الابتدائية في المملكة العربية السعودية
( ملخص البحث )
من الملاحظ أن نسبة كبيرة من تلاميذ المرحلة الابتدائية يعانون من ضعف شديد في مادة اللغة العربية بفروعها ، وهذه النسبة من التلاميذ ...
Planting Date Effect On Growth Characters And Yield Of Sorghum Under A Dry Farming-System In An Arabian Gulf Environment
(
Qatar University
, 1996 , Article)
Irrigated crop production in Qatar is a risky enterprise due to extreme weather conditions. Temperature is sufficiently warm to allow planting of grain sorghum [Sorghum bicolor (L.) Moench] from Aug through to Oct. Crops ...
أثر برنامج متكامل بين القواعد الوظيفية والقراءة على الأداء اللغوي لتلميذات الصفوف الثلاثة الأخيرة من المرحلة الابتدائية بدولة قطر
(
Qatar University
, 1991 , Article)
التدريب على الكمبيوتر وأثره في تغيير اتجاهات الطالبات نحو الكمبيوتر
(
Qatar University
, 1991 , Article)
تهدف هذه الدراسة التجريبية الى معرفة وتحديد أثر تدريس مقرر الحاسب الآلي في التعليم على تغيير اتجاهات عينة من طالبات كلية التربية نحو تطبيقات الكمبيوتر في التعليم .
وقام الباحث بتصميم استبانة خاصة للحصول على البيانات ...
Measurement Of Thermal Conductivity Of Thermally Low-Conducting Materials
(
Qatar University
, 1995 , Article)
The thermal conductivity of a building material is a necessary parameter in estimating the cooling load of a building. Cooling load estimates are quite important in selecting building materials especially in hot-climate ...
Ruthenium(II), Ruthenium(III) And Osmium(III) Complexes With Rn-Neutral Donor Ligands, And Their Catalytic Oxidative Properties
(
Qatar University
, 1994 , Article)
A number of new complexes [RunCl2 (PPh3)2L], [RumX3 (AsPh3)L] and [OsnICl3(PPh3)L'] [L= o-anthranilonitrile(anth), o-phenylenediamine(phdm), l,10-phenanthroline(phen), 2,2'-bipyridine(bipy); L' = Phen, bipy; X = Cl, Br] ...