Browsing QU Ceased Journals by Title
Now showing items 845-864 of 2240
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Proline Accumulation In Plants Of Different Ecological Groups As A Response To Water Deficit
( Qatar University , 1985 , Article)The diurnal changes in proline content were investigated in different plants including a desert shrub (Retama raetam), a halophytic grass (Spombolus virgimcus) and a cultivated crop (Zea mays). Though these species have ... -
Properties Of The Omani Sarooj
( Qatar University , 1997 , Article)The fundamental properties of the Omani sarooj have been studied. Sarooj samples were collected from different sites to assess their pozzolanic activity. A laboratory testing program covering chemical and physical ... -
A proposal for the revision of the professional component of a program of teacher education.
( Qatar University , 1984 , Article)One of the anticipated outcomes of the following proposal is an organized statement of the content and experiences (curriculum) for the professional component of teacher education program which appropriately utilized the ... -
Proteins of cottonseed (gossypium barbadense) .• extraction and characterization by electrophoresis
( Qatar University , 1995 , Article)The seed proteins of cotton (Gossypium barbadense) were quantitavely and qualitavely investigated. The qualitative study was carried out using different electrophoretic techniques ((PAGE, SDS-PAGE, Poro-PAGE, SDS-Poro-PAGE, ... -
Proton And Carbon-13 Nuclear Magnetic Resonance Of Some 4-Amino-3-Alkyl (Aryl)-5-Thio-1,2,4-Triazolines And Their Derivatives
( Qatar University , 1991 , Article)The proton and carbon-13 NMR spectra of some 4-amino-3-alkyl(aryl)-5-thio-1,2,4-triazolines, some 3-alkyl-5-thio- 1,2,4-triazolines and some 4-amino-3-aryl-5-thio-l,2,4-triazoles were measured in DMSO-d6 as solvent. The ... -
Pullulan production from sugar beat molasses
( Qatar University , 1997 , Article)Sugar beet molasses was used as the substrate for the production of pullulan with Aureobasidum pullulans ATCC 42023. In addition biomass, residual sugar and final pH of the culture medium were investigated. In comparing ... -
The Pulse of Colour: in Virginia Woolf's 'To the Lighthouse'
( Qatar University , 1979 , Article) -
Pyrolysis Kinetics of Oil-Palm Solid Waste
( Qatar University , 2005 , Article)Pyrolysis of oil-palm shells, a cheap and abundantly available solid waste from palm oil producing process, was carried out using thermogravimetric analysis. The effect of heating rates (10,15,20 and 25°C/min) on the kinetic ... -
Pyrrolizidine alkaloids from alkanna orientalis (L.) Boiss
( Qatar University , 1992 , Article)Three pyrrolizidine alkaloids; 7-angelyl retronecine (I), 9-angelyl retronescine (II), and dihydroxytriangularine (III) were isolated by DCCC and VLC from Alkanna orientalis growing in Egypt. Their structures were elucidated ... -
Pyrrolizidine alkaloids from heliotropium arbainense and h. Ovalifolium
( Qatar University , 1991 , Article)Investigation of the pyrrolizidine alkaloids of Heliotropium arbainense resulted in the isolation and identification of heliotrine, europine and 7-angelylheliotrine. From H. ovalifolium three alkaloids were isolated: ... -
Pyrrolizidine Alkaloids From Senecio Aegyptius L.
( Qatar University , 1988 , Article)Investigation of the alkaloidal constituents of Senecio aegyptius L. resulted in the isolation and identification of senecionine, dehydrosenkirkine and probably an isomer of seneciphylline. TLC, HPLC and GLC showed the ... -
Qualitative And Quantitative Assessment Of Drained Water From Urban Ground-Water
( Qatar University , 1992 , Article)Although the groundwater table in the State of Qatar peninsula is reducing, there is a persistent increasing level of groundwater in some areas in Doha city. This increasing tendency could be attributed to the topography ... -
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 ... -
A Qualitative Approach to Direct Inference Principle
( Qatar University , 2002 , Article)In this paper,we study the suitability of a symbolic model of syllogistic reasoning and direct inference principle with the representation and the management of knowledge based on statistical information and evaluated in ... -
Qualitative Assessment Of Bottled Water In The Middle East
( Qatar University , 1996 , Article)Many brands of bottled water are being produced in the Middle East including the Gulf Cooperation Council (GCC) countries. Over fourteen brands of bottled water could be found in the market of Doha. Use of bottled water ... -
Qualitative Dealing with Quantified Assertions
( Qatar University , 2002 , Article)In this paper we present a newapproach to a symbolic treatment ofquan-tified statements having the following form "Q A's are 5's", knowing that A and B are labels denoting sets,and Q is a linguistic quantifier interpreted ... -
Rainfall Characterization In An Arid Area
( Qatar University , 1991 , Article)The objective of this work is to characterize the rainfall in Doha which lies in an arid region. The rainfall data included daily rainfall depth since 1962 and the hyetographs of the individual storms since 1976. The ... -
A Random Binary Trees Generation Method
( Qatar University , 2000 , Article)There are two widely used random distributions on binary trees, namely the binary search tree distribution and the uniform distribution. By analyzing the performance of algorithms that manipulate binary trees generated at ... -
Random Distributed Algorithms For Clock Synchronization
( Qatar University , 1992 , Article)This paper proposes clock synchronization algorithms based on the idea in which randomly chosen m out of the total N processors cooperate to perform the clock adjustment of all processors in a distributed system. Selection ... -
A Rational Exponential Model for Unconstrained Non-Linear Optimization
( Qatar University , 2002 , Article)In this Paper, a new algorithm based on the non-quadratic model is suggested for solving unconstrained optimization problems which modifies the classical conjugate gradiant methods. This technique has the same properties ...
