X iv :c on dm at /0 50 93 75 v1 [ co nd -m at .m es -h al l] 1 4 Se p 20 05 Effect of temperature on the binding energy of a shallow hydrogenic impurity in a Quantum Well Wire T G Emam Department of Mathematics, Faculty of science, Ain Shams university, Abbassia, Cairo, Egypt. and Department of Mathematics, the German university in Cairo-GUC, New Cairo city, Main Entrance Al Tagamoa Al Khames, ...

Ehab Mohamed Rabei Metwali 1, 2*, Michael Paul Fuller 3, Salah Mohamed Hassan Gowayed 1, 2, Omar Abdel-Hakeim Almaghrabi 1 and Yahia Yosef Mosleh 1, 4 1 Biological Science Department, Faculty of Science, North Jeddah, King Abdul Aziz University, P. O. Box number 11508, Jeddah 21463, Saudi Arabia. 2 Botany Department, Faculty of Agriculture, Suez Canal University, Ismailia 41522, Egypt. 3 Depart...

Features selection is an essential step for successful data classification, since it reduces the data dimensionality by removing redundant features. Consequently, that minimizes the classification complexity and time in addition to maximizing its accuracy. In this article, a comparative study considering six features selection heuristics is conducted in order to select the best relevant feature...

Geomorphic mapping of Egypt’s Western Desert from LANDSAT-MSS images reveals oriented aeolian landforms that record, in part, Holocene winds. Wind directions reconstructed from these landforms indicate the dominance of N–S airflow from 30jN to 20jN, turning clockwise southward to NE–SW, conformable with modern circulation. A second direction appears over western Egypt, W between 30jN and 26jN, ...

abstract: this study uses esi indicators and statistics database for comparative evaluation of scientific production of iran, turkey, egypt and pakistan during 2002- 2012. this study is a survey and is done scientometrics approaches. spss software used for analysis of findings. toky and pearson correlation test was performed. study population was leader islamic countries who indexed base of esi...

Our objective was to characterize the distribution, diversity and patterns of hepatitis C virus (HCV) genotypes in the Middle East and North Africa (MENA). Source of data was a database of HCV genotype studies in MENA populated using a series of systematic literature searches. Pooled mean proportions were estimated for each genotype and by country using DerSimonian-Laird random-effects meta-ana...

A checklist of Eulophidae (excluding Entiinae) is presented based primarily on a total of 155 specimens collected from 23 localities in Egypt during the period of April 2012 to June 2014, mostly by sweep net. Altogether, 55 species in 22 genera and 3 subfamilies (Entedoninae, Eulophinae and Tetrastichinae) are recorded, of which 6 genera (Dicladocerus Westwood, Euplectrus Westwood, Entedon Dalm...

Background: Iron deficiency (ID) and iron deficiency anemia (IDA) in adolescents tends to increase with age due to acceleration of growth. Objectives: This study aimed to determine the prevalence of ID and IDA in adolescent girls in rural Upper Egypt. Methods: 912 girls in 5 different village preparatory schools situated in El-Minya governorate at Upper Egypt were enrolled in the study. Complet...

Egypt has led the region (Africa and the Middle East, excluding Israel) in the availability of Internet services on a wide scale. Nevertheless, Egypt is encountering very particular issues and problems – common to developing countries – with regard to electronic commerce. This paper, as it identifies deterrents to electronic commerce in Egypt, hopes to offer a to-do-list for anyone who is champ...