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Now showing items 31-40 of 105
Precise, wide-range approximations to arc sine function suitable for analog implementation in sensors and instrumentation applications
(
IEEE
, 2005 , Article)
This paper presents four newly developed algebraic approximations of the inverse sine function, defined for the full [-1,+1] input range. These approximations contain few terms, and have numerical coefficients with low ...
Representation of Adsorption Data for the Isopropanol-Water System using Neural Network Techniques
(
WILEY-VCH Verlag
, 2005 , Article)
Molecular sieves and palm stone, a newly developed bio-based adsorbent, were used to break an azeotropic isopropanol-water system via an adsorptive distillation process. Equilibrium data at different inlet water contents ...
A high precision resolver-to-DC converter
(
IEEE
, 2005 , Article)
A newly developed resolver converter, providing a pseudolinear voltage proportional to the shaft angle, is presented. This converter is based on a new concept involving the absolute values of the demodulated sine and cosine ...
On the preparation of electron sensor using LiRbSO4 samples
(
WILEY-VCH Verlag GmbH & Co.
, 2005 , Article)
The dielectric spectroscopy of metal�metal sulfate LiRbSO4 samples are described with particular emphasis on sensor performance to be used in the field of radiation. The obtained results as the effect of different electron ...
Compositional transformations in ion implanted polymers
(
Elsevier
, 2005 , Conference Paper)
Changes of surface layer composition produced by ion bombardment of polyethylene and polypropylene samples were studied. These materials are under consideration for load bearing surfaces in biological and technical ...
Evaluation of Electron Swarm Parameters in SF6 Using Monte Carlo Method
(
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 ...
Relationship of plant proteins and amino acids within taxonomic categories in Qatari range plants
(
Asian Publication Corporation
, 2005 , Article)
Protein and amino acids of sixty-eight range plants growing wild in Qatar belonging to fifty-six genera and twenty-three families are studied to evaluate their nutritive values
Study of the influence of xylene-based chemical Additive on crude oil flow properties and Paraffin deposition inhibition
(
Qatar University
, 2005 , Article)
Paraffin related problem appears through out the production process of nearly all kinds of crude oils all over the world. It also appears in the dewatering process and the long distance crude oil transportation. In Nigeria, ...
المياه المعبأة في دولة قطر مع دراسة سلوك مستهلكيها
(
Qatar University
, 2005 , Article)
يهدف البحث إلى التعرف على وقع صناعة المياه المِعبأة في دولة قطر وتجارتها وكذلك جودتها مقارنة مع مياه الشبكة العامة. وًمن بين الأهداف أيضا درًاسة سلوك مستهلكيها وتبني خطة لتطوير صناعتها. وقد اعتمد الباحثان على مصادر بيانات ...
أثر توظيف مدخل الأهداف التعليمية في التحصيل الدراسي في التربية البدنية
(
Qatar University
, 2005 , Article)
هدفت الدراسة إلى التعرف على أثر توظيف مدخل الأهداف التعليمية .فن التحصيل الدراسي في مادة التربية البنية لدى تلاميذ وتلميذات السنتين الأولى والثانية من المرحلة الإعدادية بدولة قطر وتمثلت مشكلة ) الدراسة في الجدل القائم حول ...