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Now showing items 61-68 of 68
Ultrasonic and thermal properties of γ-irradiated low-density polyethylene
(
John Wiley & Sons, Inc.
, 1993 , Article)
The ultrasonic pulse-echo technique and differential thermal analysis were utilized to characterize and to monitor the effect of ?-irradiation on the sonic modulus and the heat effect of low-density polyethylene. The sonic ...
Helminth parasite larvae collected from Arabian Gulf fish II. first record of some trybanorhynch cestode from economically important fish
(
Arab Bureau of Education for the Gulf States
, 1999 , Article)
Metacestodes of 14 different trypanorhynch larvae were found infesting Arabian Gulf economically important fish along the coasts of the United Arab Emirates. Except for Grillotia and Pterobothrium, all other larvae were ...
Possible evidence for the existence of a hairy layer at the surface of polymer latex particles
(
John Wiley & Sons, Ltd.
, 1998 , Article)
In this work, an attempt is made to verify the existence of a hairy layer at the surface of polymer latex particles, and determine its thickness under different conditions. Two systems have been studied. In one system, ...
عرض وتحليل بعض الجوانب التاريخيه لجامعة قطر 73/1974- 93/1994 مع اقتراح عناصر خطة عمل للتطوير المستقبلي
(
كلية التربية - جامعة عين شمس
, 1997 , Article)
جامعة قطر التي سنتحدث عن بعض تاريخها في هذه الدراسة قد بلغت اليوم مستويات من النمو في أعداد طلبتها وفي أعداد أعضاء هيئة التدريس، وفي كلياتها، وتخصصاتها وبرامجها الدراسية وأنشطتها العلمية والثقافية والرياضية والمجتمعية تفوق ...
On Transformations and Perturbations of Orthogonal r-Frames
(
WILEY-VCH Verlag GmbH & Co.
, 1993 , Article)
A decomposition of Cn into a finite direct sum of orthogonal subspaces can be conveniently represented by its orthogonal projector frame, which is the collection of the corresponding orthogonal projectors. Two such ...
Evidence by ac-conductivity for the higher mobility of boron (over aluminium)-associated Brønsted sites in boron-modified HZSM-5
(
Elsevier
, 1996 , Article)
A correlation ac-conductivity analysis is performed at 102–105 Hz, 373–613 K and 0.8 V for characterizing the effect of increasing boron incorporation in HZSM-5 lattice on altered electric features in BZSM-5 samples of ...
الزيادة الطبيعية ودورها في معالجة الخلل السكاني في دولة قطر
(
جامعة الكويت
, 1993 , Article)
من المعروف أن نسبة عالية من سكان دول الخليج هم من غير المواطنين ، فعلى سبيل المثال ، فهؤلاء يمثلون أكثر من 70% في كل من الكويت والإمارات وقطر . هذا البحث العلمي يحاول الإجابة على السؤال : إلى أي مدى تتمكن الزيادة الطبيعية ...
Water stress and gibberellic acid effects on growth of fenugreek plants
(
Springer Berlin / Heidelberg
, 1998 , Article)
Fenugreek plant is susceptible to water stress during the vegetative growth stages, since a soil matric potential lower than -0.3 MPa causes substantial reduction in growth parameters such as height, weight and total leaf ...