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Now showing items 91-100 of 114
Theory and Computations for Systems Modeled By First Order Differential Equations
(
Qatar University
, 2000 , Article)
A numerical scheme using Sine functions is developed to approximate the solution of a 2 x 2 system of first order differential equations. The error in the approximate solution is shown to converge exponentially.
An Extension of the Szasz-Mirakyan Operator on the Whole Real Axis
(
Qatar University
, 2000 , Article)
The aim of this paper is to present a new extension of the Szasz-Mirakyan operator n the whole real axis, and to give its convergent approximation theorem.
Strong and Weak n-Homogeneous Spaces
(
Qatar University
, 2004 , Article)
In this paper we introduce new types of n-homogeneity, we call them n-homogeneous of type 2 and type 3, denoted by nH2, nH3 respectively. We show that every 3H3-space is bihomogeneous space. Also, every finite nH3-space ...
Preliminary Survey on Parasites Infecting Some Amphibian and Reptilian Species from United Arab Emirates and Qatar
(
Qatar University
, 2002 , Article)
The common amphibian toad Bufo orientalis and four species of reptiles (Scincus muscatensis, Mabuya brevicolis, Uromastyx microlepis and Diplometopon zarudnyi) were collected from five localities in the United Arab Emirates ...
Evaluation of quaternary aquifer between qena and luxur. (Nile Valley, Egypt)
(
Qatar University
, 2001 , Article)
In order to evaluate the hydrogeological setting of the Quaternary aquifer and the related geological structures controlling its characteristics. A total of 50 vertical electrical soundings (VES.s) were conducted along 13 ...
The Commercial Value of Fish at Fasht Ad-Dibal and its Associated Biota in the Qatari Waters, Arabian Gulf
(
Qatar University
, 2007 , Article)
The present study is an attempt to study the fish diversity of Fasht Ad-Dibal in the north-western coast of Qatar. Thirty three species belonging to 25 families were caught using gill nets, gargoors (metal traps) and hand ...
On Symboloic Reasoning and Direct Inference Principle
(
Qatar University
, 2004 , Article)
This paper discusses an approach using the M-valued symbolic logic with syllogistic reasoning and direct inference principle (reasoning from statistical information to conclusions about individuals), to manipu¬late statistical ...
Kinetics and Mechanistic Studies of the Bromination of Some Substituted Tetralones, Part 1
(
Qatar University
, 2000 , Article)
The rate of bromination of 2-benzal-l-tetralone (II) and its derivatives p-methyl (12), 77-chloro (13), ffi-chloro (14), and p-nitro (15) have been studied in chloroform. The study indicated first order dependence on each ...
Genetic Studies on Escherichia Coli Strains Isolated From Cases of Bovine Mastttis
(
Qatar University
, 2007 , Article)
This study was carried out on 53 milk samples positive for California Mastitis Test taken from eight herds infected with clinical mastitis in Taif City. Mean Somatic cell Count (SCC) was 4, 482, 000 cells / ml. Forty-eight ...
Geologic evolution of the Dukhan salt flats in Western Qatar Peninsula, Arabian Gulf
(
Qatar University
, 2003 , Article)
Photo-interpretation of landsat Thematic Mapper images of the Dukhan salt flats, on the west coast of Qatar, reveals several deposit zonations within the salt flats. The deposit zonations occupy a restricted sub-evaporite ...