Qatar University Science Journal - [From 1981 TO 2007]: المرسلات الحديثة
السجلات المعروضة 281 -- 300 من 770
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Mineralogical and Geochemical Compositions of Modern Bivalve Shells from The Mediterranean Coast Of Egypt
( Qatar University , 1993 , Article)The stable isotopic (8 ^C and 8^O) and elemental (Sr and Mg) compositions are presented for marine mollusc Carditacea and Solenacea shells collected off the Mediterranean coast of Egypt. Based on shell microstructures and ... -
Biosynthesis of Single Cell Protein (SCP) By Yeasts from Crude Chicken Waste
( Qatar University , 1993 , Article)Three strains of yeasts have been grown on media consisting of Chicken waste (CW) as a sole source of carbon and nitrogen in different concentrations. The nutrient medium which contains 2% CW extract was found to be the ... -
Time And Order Of Appearance Of Ossification Centres Of The Rat Skeleton
( Qatar University , 1985 , Article)The time and sequence of ossification pattern of the skeletal system of the Rattus rattus were studied in serial whole mounts prepared from Day 10 to Day 21.5 (day of delivery). In the neurocranium, each bone is represent ... -
Seasonal Fluctuation Of Non-Rhizosphere Soil Fungi In Wheat Fields In Egypt
( Qatar University , 1983 , Article)The study aims at intensive survey of fungal floras of non-rhizospheric soil in wheat fields in El-Minya Governorate over the periods December 1976 - May 1977 and December 1977 - May 1978. At 28°C, using 1% glucose-Czapek's ... -
The Availability Of Iron In Soil And Plants Treated With Organic And Inorganic Fertilizers In The Jordan Valley
( Qatar University , 1995 , Article)This paper deals with the rcults of a study carried out on "Phoseolus vulgaris - Wed" as an indicator of chlorosis. The study took place between July 1990 and July 1992, and for two crop seasons each year. Six kinds of ... -
Cloning and Expression of Methionine-enriched Glycinin GY4-Genes in E. Coli
( Qatar University , 2002 , Article)Cloned cDNAs encoding glycinin subunit GY4 was modified to increase methionine content. The effect of the modification was evaluated using an in vitro transcription / translation system. The modifications were carried out ... -
The effect of gossypol, gossypolone and apogossypol on the lipids of male rat Serum and seminal fluid
( Qatar University , 1994 , Article)The neutral and polar lipids of serum and seminal fluid of male rats were investigated under the effect of gossypol acetic acid, apogossypol and gossypolone. The total phospholipids and the neutral serum lipids showed ... -
Petrographic And Chemical Microheterogeneity In Dolomite, Bahariya Oasis, Egypt
( Qatar University , 1994 , Article)Dolomite samples from the lower member of the El-Hafhuf Formation (Turonian-Santonian) possess noticeable petrographic and chemical heterogeneity among their fabric components. Petrographically, the study samples can be ... -
A Qualitative And Quantitative Survey On The Helminth Parasites Of Fishes From The Aswan High Dam Lake In Egypt
( Qatar University , 1984 , Article)The present investigation is concerned with a helminthological survey of 19 species of fish collected along different seasons from the Aswan High Dam Lake in the southernmost part of Egypt. 615 out of 850 fish (72.4%) are ... -
Histological And Histochemical Study Of The Digestive Tract Of The Worm-Like Reptile*, Diplometopon Zarudnyi (Squamata)
( Qatar University , 1996 , Article)The structure of the digestive tract of Diplometopon zarudnyi was studied by means of light microscopic histology and PAS reaction. The oesophagus is lined with stratified columnar epithelium while the stomach is lined ... -
Intensive shrimp Penaeus semisulcatus Dee Haan, culture in the Arabian Gulf during the summer
( Qatar University , 1999 , Article)P. semisulcatus juveniles (average weight 9.7g) from Manifa Lagoon on the Arabian Gulf were randomly stocked in tanks (0.8m3) at three stocking density levels (25, 50 and 75 shrimp/m3) in four replicates. The tanks were ... -
Changes in some chemical constituents of stored grain and animal feed In two provinces in Saudi Arabia
( Qatar University , 1995 , Article)Changes in total acidity, total carbohydrates, reducing sugars, starch, total protein, ether soluble fraction, sodium, potassium, calcium, magnesium, total phosphorus, ash, dry and wet gluten, crude fibres and specific ... -
Effect Of "Ethrel" On Colour Development And Juice Quality Of Sweet Oranges And Grapefruits
( Qatar University , 1994 , Article)"Ethrel" was sprayed at 0,120, 420 and 480 ppm on sweet orange and grapefruit trees at fruit maturity stage to improve colouring and juice quality. Changes in fruit colour were observed in both varieties but the results ... -
Evaluation Of Hydraulic Parameters For Dara Area (Gulf Of Suez), Egypt
( Qatar University , 1991 , Article)This work aims to furnish a basis for evaluating the water resources in Dara Area which is one of the vergin areas assigned for the purpose of land reclamation. Analysis of pumping and recovery tests performed in the study ... -
Mycoflora associated with dry dates in upper egypt ii. Osmophilic fungi and test of osmophilic ability
( Qatar University , 1988 , Article)19 fungal species which belong to 8 genera were collected from 30 dry date samples of which 9 species appeared on all sucrose concentrations (20%, 40% and 60%) namely, Aspergillus amstelodami, A. niger, A. raber, A. sydowii, ... -
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 ... -
Thermoluminescence And Dielectric Properties Of An X-Ray Irradiated Double Sulphate Crystal
( Qatar University , 1994 , Article)Thermoluminescence measurements and A. C. conductivity o(w) for nonirradiated and x-ray irradiated Potassium Cesium Sulphate, KCSSO4, crystals have been studied. TL reader type Harshaw model 2000 A+B and the impedance meter ... -
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 ... -
Geochemical Model And Normalization For Heavy Metals In The Bottom Sediments, Dubai, UAE.
( Qatar University , 1999 , Article)Dubai creek can be considered as the focal point of Dubai. It has great importance for trading and aesthetic values. Total and leachable heavy metals (Cd, Co, Ni, Pb and Zn), organic carbon and total carbonate were studied ... -
Explicit Forms of Conservation Laws of a Class of Differential Equations
( Qatar University , 1994 , Article)Explicit forms of conservation laws of a class of nonlinear partial differential equations are derived; firstly from BScklund transformation and secondly from the. fundamental equations of the corresponding inverse method.
