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السجلات المعروضة 71 -- 80 من 336
Knockout mice: Is it just genetics? Effect of enriched housing on fibulin-4+/- mice
(
Public Library of Science
, 2007 , Article)
Background. Fibulin-4 is an extracellular matrix protein expressed by vascular smooth muscle cells that is essential for maintaining arterial integrity. Fibulin-4-/- mice die just before birth due to arterial hemorrhage, ...
Reduction kinetics of ceria surface by hydrogen
(
Wiley Periodicals, Inc.
, 2004 , Article)
Powdered cerium dioxide (ceria, CeO2) as compressed, sintered pellets, of porosity 16.4% and density 5.99 g cm?3, were treated in hydrogen flow at 1 atm and various temperatures to effect reduction. The electrical conductivity ...
The Scientific Contributions of Arab Scientists to the International Research: a Study of the Indicators for Select Arab Countries
(
Blackwell Publishing Ltd
, 2009 , Article)
Using SCOPUS database, the research productivity of Arab researchers in five countries has been investigated. The analysis included subject, geographical and time range indicators. The relationship between the most published ...
Concentration of sucrose solutions via vacuum membrane distillation
(
Elsevier B.V.
, 2005 , Article)
The potential use of vacuum membrane distillation (VMD) process for the concentration of sucrose solution was examined. The effect of several parameters, including feed temperature, flow rate, and initial sucrose concentration ...
Tutorials-Based System to Assist Qatari Children with Special Needs
(
IEEE
, 2008 , Article)
The objective of this project is to develop an Arabic predictive communication system for physically disabled people with speech and language impairments who are resident at the Shafalah Qatari center for children with ...
Assessment practices in accounting departments of U.S. Colleges and Universities
(
Qatar University
, 2007 , Article)
The new AACSB Eligibility Procedures and Standards for Business Accreditation and for Accounting Accreditation, as of January 31,2007, place much greater emphasis on assurance of learning. It requires colleges of business ...
The Structure of the Free Volume in Poly(styrene-co-acrylonitrile) from Positron Lifetime and Pressure Volume Temperature (PVT) Experiments
(
WILEY-VCH Verlag
, 2004 , Article)
Summary: The structure of the free volume and its temperature dependence between 25 and 190 °C of copolymers of styrene with acrylonitrile, SAN (0 to 50 mol-% AN), is studied by pressure volume temperature (PVT) experiments ...
Man-made impact on the geochemistry of the Nile delta lakes. A study of metals concentrations in sediments
(
Kluwer Academic Publishers
, 2004 , Article)
Forty two sediment samples were collected from four River Nile northern delta lakes (Mariut, Edku, Burullus and Manzalah) to asses the man-made impact on their environment during the last 20 years. Due to the continuous ...
Molecular phylogeny of Qatari date palm genotypes using Simple Sequence Repeats markers
(
Asian Network for Scientific Information
, 2009 , Article)
The objectives of the present study is to analyze the genetic diversity among 15 different cultivars of date palm at the experimental farm of Qatar University using Simple Sequence Repeat (SSR) markers and find out the ...
Viscous-Gravity spreading of oil on water
(
John Wiley & Sons, Inc.
, 2001 , Article)
Spreading of oil on calm water is analyzed for the second stage of spread, which is controlled by a balance between gravity and viscous forces. The analysis, using the integral boundary-layer method, agreed well with a ...