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Some Macrobenthic Invertebrates in the Qatari Waters, Arabian Gulf
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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 ...
Flavonoids From Cressa Cretica
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Qatar University
, 2005 , Article)
The aerial parts of Cressa cretica L. yielded five flavonoids that were identified as quercetin (1), quercetin-3-B-O-D-glucoside (2), kaempferol-3-O-B-D-glucoside (3), kaempferol-3-O-a-L-rhamno-(1—+6)- B-D-glucoside (a) ...
Chemical Factors Affecting Growth and Development of Lateral Root Formation in Isolated Phaseolus vulgaris L.
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Qatar University
, 2007 , Article)
The initiation and subsequent emergence of lateral roots as secondary roots have been examined in attached and excised roots of Phaseolus vulgaris grown in the absence or presence of indol-3-yl acetic acid (IAA). Treatments ...
Lumping Processes of Periodic ARMA Processes
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Qatar University
, 2004 , Article)
In this article various lumping processes are defined for periodic ARMA (PARMA) processes, namely, the forward, the backward and the cyclic lumping processes. The inter-relations between the parameters of these lumping ...
A Qualitative Approach to Direct Inference Principle
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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 ...
On the solution of Bicriterion Inter Nonlinear fractional programs with fuzzy parameters in the objective functions
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Qatar University
, 2001 , Article)
In this paper we consider bicriterion integer nonlinear fractional programs having fuzzy parameters in the objective functions. For such programs, a solution algorithm is described to solve the formulated model. The results ...
Volatile Components of the Phaeophyceae Hormophysa cuneiformis Growing Along Qatar Coasts
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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 ...
Separation of Two Forms of Extracellular p-glucosidase From a Thermotolerant Aspergillus niveus
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Qatar University
, 2003 , Article)
Two forms of P-glucosidase ((3-D-glucoside glucohydrolase, EC 3.2.1.21) from the culture filtrate of Aspergillus niveus were separated and partially purified by gel chromatography on Sephadex G-100 column. The two forms ...
The Role of Improper Use of Artificial Insemination on Infertility and Abortion in Cows in Basrah Province, Iraq: Microbiological Study
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Qatar University
, 2006 , Article)
A prospective study was performed to demonstrate the infectious causes and their mode of transmission in cases of infertility and abortion in cows. There were 434 artificially inseminated cows, of which 155 (35.7%) did not ...
Strain Broadening of E.P.R. Linewidths in Fe/Mgo Single Crystals and Powders
(
Qatar University
, 2004 , Article)
The E.P.R. linewidth of the M= + 1/2 <-» -1/2 transition of Fe3+ spectrum of Fe/MgO single crystals and powders have been measured at 9 GHz before and after annealing. The nominal iron concentrations ranged from 310 to ...