Browsing Qatar University Science Journal - [From 1981 TO 2007] by Title
Now showing items 33-52 of 770
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Apical dominance in vicia faba l.
( Qatar University , 1983 , Article)A side-effect of plant surgery was an interference with apical dominance. From the results of three experiments involving plant surgery, decapitation and the usage of "C-IAA, it appeared that the movement of the apically ... -
The Appendicular Skeleton In The Hatching And In Young Bunopus Tuberculatus Blanford, 1874 (Gekkonidae, Reptilia)
( Qatar University , 1988 , Article)The appendicular skeleton and its calcification are described in Bunopus tuberculatus at 3 ages: at hatching, 6-month-old and 12-month-old. Between the 3 ages there are several differences in the osteological pattern. The ... -
Application Of Different Methods For The Preparation Of Chlorophyll Pigments For Food And Pharmaceutical Industries
( Qatar University , 1994 , Article)The main objective of this work is to establish an economic and applied technique for the production of chlorophyll pigments and their derivatives namely Cu-chlorophyll complex in the form of colour additives. These trials ... -
Application of discriminant score /∆ log r method for prediction of Organic richness at negelah well, coastal Mediterranean zone, western desert Egypt
( Qatar University , 1995 , Article)Both sonic, resistivity and temperature information are used in an integrated manner in order to identify the organic richness of the shally intervals allover the Albian - Aptian rock sequence in Negelah well located at ... -
Application of optimum offset shallow seismic reflection technique In the area of west el fashn, egypt
( Qatar University , 1996 , Article)A shallow optimum offset reflection survey was performed in El Fashn area. The purpose of this survey was to determine the continuity of the subsurface boundary conditions The optimum offset shallow seismic reflection ... -
Application of Stripping Voltammetry for the Determination of Cadmium, Lead, Copper and Zinc in Yemani soils and Vegetables
( Qatar University , 2004 , Article)Heavy metals contents in the solutions from acid digestion of Yemeni soils and vegetables were deter¬mined by differential pulsed anodic stripping voltammetry. The geometric mean for Cd, Pb, Cu and Zn concentrations for ... -
Application of the Forward Modelling of Sequence Stratigraphy & Diagenesis to The Upper Cretaceous Carbonates Of Western Iraq
( Qatar University , 2000 , Article)Dynamic forward modelling of carbonate diagenesis and sequence stratigraphy relies on the understanding of the different process which provide a high resolution prediction of the geometry of porous and permeable zones ... -
Application of the resistivity method to study ground water potentialities on a part of the entrance of wadi el-assiuti, Eastern desert, Egypt
( Qatar University , 1993 , Article)Wadi El-Assiuti is located east of Assiut city and extends in almost northeast direction. The entrance of the wadi is suitable site for reclamation and city planning projects. Consequently, it is very important to study ... -
Appraisal into Phytochemistry and Taxonomy of an Old Plant Collection from The Middle East
( Qatar University , 1997 , Article)The English traveller Richard Pococke (1704 -1765) visited the Middle East during the period 1737-1740 and collected medicinal plants from localities in Egypt and Arabia. This collection gave a description of the Middle ... -
Approximate Solution For A Problem Of Propagation Of Elastic-Plastic Wave In The Half-Space
( Qatar University , 1984 , Article)In this paper, we consider a half-space occupying an elastic-plastic medium. Treatments were carried out under the assumption of perpendicular load, on boundary which propagates with a constant speed D. The assumption ... -
Approximating the Distribution of Quadratic Forms Using Orthogonal Polynomials
( Qatar University , 1999 , Article)In this paper we propose some techniques to approximate the distribution of quadratic forms in normal random variables. The first two techniques will be based on orthogonal polynomials, namely; the Hermitte and Laguerre ... -
An Approximation Leading To The Binomial Distribution In The Stochastic Treatment Of A Reversible Chemical Reaction
( Qatar University , 1992 , Article)The exact equilibrium distribution of the number of molecules of C in the reversible chemical reaction A+B ^=S: C is shown to converge to the binomial distribution when N is finite, M—»!K, K—>0 in such a way that KM is ... -
Aptian To Cenomanian Palynomorphs From The Qarun 2-1 Borehole, Western Desert, Egypt
( Qatar University , 1993 , Article)Rich distinctive, miospore assemblages are recovered from four sidewall core samples obtained from the Kharita Member of Burg El Arab Formation in the Qarun 2-1 borehole located in the eastern part of the North Western ... -
Ascending urinary tract infection in rats caused by Proteus mirabilis
( Qatar University , 1997 , Article)A model for ascending unobstructed urinary tract infection was developed in female rats to study the pathogenesis of urinary tract infection by Proteus mirabilis. Urinary bladders of rats were inoculated by I. V. cannula ... -
Assessment of Coral Reef Communities At Abu-Dabab, North of Marsa Alam Egypt
( Qatar University , 2003 , Article)The coral reef communities in the area of Abu Dabab, north of Marsa Alam were assessed using rapid underwater technique. Three adjacent reefs were studied to reveal the actual status of the reefs and its damaged parts. ... -
Assessment of heavy metal accumulation and performance Of some physiological parameters in zea mays l. And Vic1a faba l. Grown on soil amended by sewage Sludge resulting from sewage water Treatment in the state of qatar
( Qatar University , 1995 , Article)Pot experiment was conducted to explore extent of concerns regarding agricultural use of sewage sludge for crop production in the state of Qatar. Extent of heavy metal accumulation and its subsequent impact on physiological ... -
Assessment of metals pollution in the sediments of lake burullus, s.e. Mediterranean, egypt
( Qatar University , 1995 , Article)The present study aims to quantify the heavy metals contents in the sediments of Lake Burullus. Cu, Pb, Zn, and Cd were analyzed using ICP spectrometer. The contamination factors (CF) were calculated for each element. The ... -
Attenuation Of Bacillus Cereus Spores By Different Factors
( Qatar University , 1993 , Article)The spore suspension of Bacillus cereus K] ]s was exposed to different concentrations of NaCl. NaNo3 and NaNC>2 as curing agents. The spores were able to tolerate 10% NaCl. Up to 4%, NaNC>3 had little or minor effects on ... -
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 ... -
Azo-Hydrazo Tautomerism: Further Evidence Based On Polarographic Reduction And Acidity Function Of Some Heterocyclic Compounds Containing Oximino-Group
( Qatar University , 1994 , Article)Potentiometric pKa and polarographic behaviour of l,3-indandione-monoxime-2-phenyl azo and four of its substituted derivatives were investigated in buffer solution of pH -2-12. The results showed that the compounds are in ...