Browsing College of Arts & Sciences by Publisher "Qatar University"
Now showing items 1-20 of 21
-
A 6th-order local approximation by a cubic curve
( Qatar University , 1997 , Article)We derive and present a MAPLE program for the construction of a parametric cubic polynomial curve which has sixth-order contract with a given smooth curve at a given point, thus providing a local sixth-order approximation ... -
The amino acid composition of some Common marine algae from Qatar (Arabian Gulf)
( Qatar University , 1993 , Article)The most dominant twenty algal species representing the main three groups of benthic macroalgae, Chlorophyceae, Phaeophyceae and Rhodophyceae were collected from the coastal zones of the Qatar peninsula. The algae were ... -
Biochemical And Environmental Studies On Hepatoma Patients In Egypt
( Qatar University , 1994 , Article)The present study was carried out on 102 hepatoma patients collected mainly from the National Cancer Institute, Cairo University, during the period 1988-1991 . Environmental and personal data were collected for each patient. ... -
Constituents Of Green Beans Phaseolus Vulgaris (Lipids And Flavonoids)
( Qatar University , 1992 , Article)Chemical study of the lipid fraction resulted in the isolation and identification of a hydrocarbon fraction (n-Czg -0-033); an aliphatic alcohol fraction (C^, Czp, €30) and a sterol fraction (stigmasterol and sitosterol). ... -
Constituents of plants growing in qatar xxv flavonoids of Picris Radicata (forssk.) Less.
( Qatar University , 1994 , Article)Four flavonoids were isolated from the plant and were identified as apigenin, chrysin 7-glucoside, leuteoline and luteolin 7-glucoside. -
Constituents of plants growing in Qatar: part xxviii. Constituents Of cistanche phelypaea
( Qatar University , 1995 , Article)Ten compounds were isolated from the methanolic extract of the aerial parts of Cistanche phelypaea (Orobanchaceae) and identified as echinacoside (1), tubuloside A (2), tubuloside E (3), acteoside (4), 2'-acetylacteoside ... -
Creativity/Productivity of Child's Language: A Case of Qatari Dialect
( Qatar University , 1999 , Article) -
Developmental Stages of the Acquisition of Negation and interrogation by Children Native Speakers of Qatari Dialect
( Qatar University , 2002 , Article)The developmental stages of Qatari Dialect interrogatives and negatives are described in this paper. Four children were included in this study, ranging in age from one year and six months to nine years. According to the ... -
Effect of gamma radiation on the morphology and Thermophysical properties of the pollen wall of Phoenix dactylifera L.
( Qatar University , 1994 , Article)Pollen grains of Phoenix dactylifera were exposed to different doses of gamma radiation (250,500,1000 rad and 1 M rad). To access the effect of radiation on the external morphology of the pollen grains, they were examined ... -
Open-ended cloze procedure and multiple - choice cloze procedure: similarties and differences
( Qatar University , 1991 , Article)This paper is a validation of two cloze procedures: Open-Ended and Multiple-Choice (henceforth OE and MC respectively). Open-Ended and Multiple-Choice tests on the same text were administered to 60 English majors in their ... -
Phospholipid Fatty Acids Compositions of Sponges from Qatar I- Haplosclerida
( Qatar University , 2006 , Article)The phospholipid fatty acid contents of six Haplosclerida sponges collected along Qatari ;ts, Arabian Gulf, were identified by coupling GC-MS experiments. More than hundred of rated and unsaturated fatty acids have been ... -
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 ... -
The relationship between attitudes and achievemet in SL ( a case study of students at the University of Qatar)
( Qatar University , 1998 , Article)Attitudes and motivation are considered important factors in Language Acquisition (LA). Learners' attitudes towards speakers ofTarget Language (TL) and the TLitselfhave been the subject of intensive research in applied ... -
A review of process and production in SL studies
( Qatar University , 1990 , Article) -
A short critique of the Crescent English Course
( Qatar University , 1988 , Article)This paper is a short critique of the "Crescent English Course", Pupils Book 2. It falls into two parts. The first is information about the course; its aims, organization and some of its general characteristics. The second ... -
Solid-State Ac-Conductivity Analysis For The Long Debated Catalytic Activity Of The Boralite Sieve
( Qatar University , 1996 , Article)The ac-phase dependent impedance, capacitance and dielectric loss of boralite are measured and correlated with those of a similar history HZSM-5 as a function of frequency (0.1-100 kHz) and temperature (373-638 K) at 0.8 ... -
A study of the interlanguage of some Arabic students of English
( Qatar University , 1988 , Article)In this study, the contrastive analysis method is used to investigate the lnterlanguage (IL) developmental sequences of the acquisition of some aspects of English by Arabic-speaking learners. The learners, whose language ... -
Volatile Components of the Phaeophyceae Hormophysa cuneiformis Growing Along Qatar Coasts
( Qatar University , 2007 , Article)The present work deals with the study on volatile compounds from the brown alga Hormophysa cuneiformis collected from the Northwest coast of Qatar on May 2002. Two extraction methods have been used: conventional hydrodistillation ... -
التحولات الاجتماعية و مظاهر التغير في المجتمع القطري : دراسة تحليلية
( Qatar University , 1998 , Article)يؤكد التحليل السوسيولوجي على أن التغير الاجتماعي في معناه الشامل يضمن التغير في البنا ء الاجتماعي أو في نظم اجتماعية خاصة أو في العلاقات بين النظم. كما انه يرتبط ارتباط وثيقا بالتغيرات الثقافية، واذا ما تأملنا واقع المجتمع ... -
القوس في الشعر الجاهلي و الاسلامي
( Qatar University , 1998 , Article)القوس سلاح خطير من أسلحة العرب كان له دوره في السلم والحرب ، حددت مصير كثير من الحروب ، وكانت أداة رئيسية من أدوات الصيد ، والى جانب هذا وذاك كانت سلاحا فتاكا في أيدي اللصوص والصعاليك ، وشهر من العرب رماة عرفوا بدقة إصابتهم ...