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Now showing items 41-50 of 765
A study of contamination of the northern Jordan valley agricultural fields by various metal ions using regression analysis.
(
Qatar University
, 2000 , Article)
Geochemical analysis were performed in lower subsurface soil samples of 10,20,30 and 40cm depth, collected from seven regions in the northern Jordan valley. Eighteen descriptors (variables) for each sample were used. Among ...
Application of homotopy-perturbation method to fractional IVPs
(
Elsevier
, 2008 , Article)
Fractional initial-value problems (fIVPs) arise from many fields of physics and play a very important role in various branches of science and engineering. Finding accurate and efficient methods for solving fIVPs has become ...
Investigating critical thinking skills practices in Qatari Elementary Schools
(
Common Ground Publishing
, 2009 , Article)
The purpose of this study was to examine how government and independent elementary school teachers in Qatar compare on promoting students' critical thinking skills in the classroom. A total of 441 participants completed a ...
Stability of Logistic Autoregressive Model
(
Qatar University
, 2007 , Article)
In this paper we propose a Logistic Autoregressive Model, which is a special case of polynomial Autoregressive Model. The aim of this paper is to study and find the stability conditions of the above model by using a dynamical ...
Pharmacy education and practice in 13 middle eastern countries
(
American Association of Colleges of Pharmacy
, 2008 , Article)
The Arab world has influenced the art and science of pharmacy for centuries. Pharmacy education and practice is continuing to evolve in the Arabic-speaking traditional Middle East countries, although relatively little ...
Elliptic surfaces over a genus 1 curve with the pair (l3, l9) of singular fibers.
(
Qatar University
, 2000 , Article)
In this paper we give a classication of all minimal elliptic surfaces (n : E —> C, g(c) = 1) with a section and exactly the pair (L, L)) of singular fibers.
Some Macrobenthic Invertebrates in the Qatari Waters, Arabian Gulf
(
Qatar University
, 2005 , Article)
Macro-invertebrates from eleven stations along the Qatar Exclosive Economic Zone (EEZ), Arabian Gulf, were studied during December 1998. A total of 52 species were encountered from all stations. Crustaceans were the most ...
Convergence theorems for nonself asymptotically nonexpansive mappings
(
Elsevier B.V.
, 2007 , Article)
In this paper, we prove some strong and weak convergence theorems using a modified iterative process for nonself asymptotically nonexpansive mappings in a uniformly convex Banach space. This will improve and generalize the ...
Developing Engineering Learning Objects Online Portal with LabVIEW and an Open Source Web Content Management System
(
ASEE
, 2009 , Article)
Learning objects (LOs) are independent chunks of knowledge normally used for instructional or learning purposes. LOs are normally reusable in the sense that they can be adopted and adapted for various learning and instructional ...
Isolation and Characterization of Pollulan Produced by a Local Isolate of Aureobasidium Pullulans
(
Qatar University
, 2000 , Article)
A local isolate of Aureobasidium pullulans was obtained from fig leaves surface. The isolate was identified as A. pullulans on the basis of appearance of polymorphism in the colonies, melanin pigment and pullulan production ...