تصفح QU Ceased Journals حسب العنوان
السجلات المعروضة 1 -- 20 من 2240
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17- Hydroxylation Of Progesterone By Cunninghamella Echinulata On A Laboratory Fermentor Scale
( Qatar University , 1985 , Article)The mircrobiological transformation of progesterone by a local isolate of Cunninghamella echiiiulata using a laboratory fermentor was studied. Progresterone (10-50 g/1) wetted by Tween 80 was added to 48-hour old culture ... -
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 ... -
A survey of teachers' and principals' view on grade retention
( Qatar University , 1999 , Article)This study surveyed teachers' and principals' views on grade retention in grades K-13. 833 teachers and principals, a sample representative of the school population in Lebanon, were asked to fill out a questionnaire on ... -
Abscisic acid, relative water content and water use efficiency of wheat plants In relation to grain pretreatment by phytohormones and irrigation with sea water
( Qatar University , 1999 , Article)Irrigation of wheat plants with sea water (10% and 25%) led to significant increase in free and bound ABA in the leaves, especially at 25%. The relative water content (RWC) of the sea water irrigated plants was either ... -
Abundance Of Insects And Mites Infesting Stored Grain And Animal Feed In Riyadh And Dammam Provinces, Saudi Arabia
( Qatar University , 1994 , Article)Insects and mites infesting wheat, maize and wheat bran, stored in plants at Riyadh and Dammam, Saudi Arabia, were scanned in 2 seasons, 1987 and 1988. Grains from the local markets and dust from both provinces were also ... -
Accelerating The Convergence Of Cubic Interpolation Method Using Concurrent Algorithm Based On The Transputer Technology
( Qatar University , 1992 , Article)This paper describes a concurrent method to speed up the convergence of the QIOM (Cubic Interpolation Optimization Method) to obtain the global minima for any nonlinear continuous function. The QIOM is a naturally slow, ... -
Accreditation of Engineering Programs In The USA
( Qatar University , 1989 , Article)Accreditation is a way of assessing the quality of education. In the United States accreditation of engineering programs is carried out by volunteers, engineering educators and practitioners who evaluate programs against ... -
Acid-Base Status Of Blood Of Varanus Griseus And Uromastyx Aegyptius
( Qatar University , 1984 , Article)1) A comparative study was carried out on the acid-base status of blood collected from five main blood vessels of two desert lizards, the monitor, Varanus griseus, and the dabb, Uromastyx aegyptius. 2) Blood of the monitor ... -
An Acoustic Study Of Fricative-To-Vowel Coarticulation In Arabic
( Qatar University , 1992 , Article)This study examines th carryover coarticulatory effecrs of consonantal context upon the acoustic characteristics of voqwia in Arabic. Five speaders read a list of 65 ev.c syllables containing various initial fricatives, ... -
The acquisition of five English Sentential Structures by Native Speakers of Arabic
( Qatar University , 1989 , Article)This cross-dimensional, exploratory study attempts at investigating the acquisition order of five sentential structures by native speakers of Arabic. A natural elicitation technique, in the form of a test written in English, ... -
Acute Toxicity Of Some Oil Dispersants To Mullet Fry ( Liza Macrolepis) Of The Arabian Gulf
( Qatar University , 1986 , Article)The acute toxicity of Shell LTX, Shell Concentrate, Servo CD 2000 and Exxon OSD 9217 were used to calculate 72 - hr. LC ci\ and toxicity curves to the Mullet Fry ( Liza macrolepis) under the Arabian Gulf conditions (Temp. ... -
Additions to the flora of Qatar
( Qatar University , 1997 , Article)Collections and earlier studies on the plants of Qatar are limited and of recent origin — since the seventies. The latest of these in 1983 (El Amin) listed 300 species belonging to 202 genera in 56 families. At present, a ... -
Adenylate Energy Charge As A Tool For Evaluating Sub-Lethal Toxicity
( Qatar University , 1999 , Article)Adenylate energy charge (AEC) is directly related to the cellular concentrations of the three adenylates nucleotides ATP, ADP and AMP. This biochemical index reaches high values (0.9) under optimal conditions but drops ... -
The Adjoint Problem Of A Modified Sturm-Liouville Boundary Value Problem
( Qatar University , 1993 , Article)The authors give the solutions of the eigenvalue equation that is associated with a modified Stum-Liouille problem. The discrete specturm and hence the resolvent will be obtained by means of different types of solutions ... -
Adsorptive Properties of a Desert Salsola Vermiculate Species from Synthetic Aqueous Solutions
( Qatar University , 2006 , Article)Pollution is becoming a major environmental problem and the current trend is to use available biomass to remove toxic substances from aqueous solutions. The preliminatry adsorption results on a natural Salsola Vermiculata ... -
Aeromagnetic Geophysical Investigation In El-Faiyum District, Western Desert, Egypt
( Qatar University , 1985 , Article)The present paper deals with the interpretation of the aeromagnetic survey executed over the Faiyum area. Western Desert, Egypt. Qualitative as well as quantitative interpretation of the aeromagnetic data were carried out ... -
Aeroradiometric and photogeologic characterizations Of the younger granites in the north eastern desert, Egypt and implications for mineral deposits
( Qatar University , 1995 , Article)Photogeologic studies of the younger granites in the North Eastern Desert of Egypt using both aerial photographs and satellite images revealed the separation of three successive phases of younger granites with different ... -
Age Environmental Factors, Germination And Seedling Emergence Of Ocimum Basilicum L
( Qatar University , 1990 , Article)Fresh and exhumed seeds of Ocimuni basilicum L. gave 100 % germination at 13/11-h alternating temperature of 20/10, 32/18, 38/24 and 40/32 °C but did not germinate at constant temperatures. Germination was prevented in the ... -
Agents of Socialization among Gulf Arab Youth
( Qatar University , 1981 , Article)In the contemporary sense of the term, political socialization in the Arab Gulf is a recent phenomenon. The literature on the area has been essentially of a historical or journalistic nature. Empirical studies of social ... -
Air-Borne Fungi Of Wheat Fields In Egypt
( Qatar University , 1983 , Article)The air borne fungi of wheat fields in El-Minya Governorate were studied during the periods January-May 1977 and December 1977-May 1978 using the plating catch method on 1% glucose and 50% sucrose-Czapek's agar. Fifty-two ...
