Browsing by Title
Now showing items 5575-5594 of 48073
-
Constituents of plants growing in qatar xxiii. Flavonoids of francoeuria crispa
( Qatar University , 1993 , Article)Investigation of the flavonoid constituents of Francoeuria crispa, resulted in the isolation and identification of four flavonoids: quercetin, qucrcetin-3-O-gIucoside, quercetin-7-0-glucoside and quercetin-3-methyl ether. -
Constituents of plants growing in Qatar xxiv phytochemical investigation of salvia aegyptiaca L.
( Qatar University , 1994 , Article)The study of the flavonoids revealed the isolation and identification of luteolin, luteolin 7-O- glucoside, apigenin and apigenin 7-0 glucoside; their identity was proved by m.p., TLC, UV, IR and MS. Moreover, a coumarin ... -
Constituents of plants growing in qatar xxv flavonoids of Picris Radicata (forssk.) Less.
( Qatar University , 1994 , Article)Four flavonoids were isolated from the plant and were identified as apigenin, chrysin 7-glucoside, leuteoline and luteolin 7-glucoside. -
Constituents of Plants Growing in Qatar XXXIII Proximate composition of thirty four food and feed plants growing in Qatar
(2003 , Article)34 wild species within 32 genera belonging to 14 families from the flora of Qatar were analyzed for their moisture, lipids, carbohydrate, protein, crude fiber and ash content -
Constituents of Plants Growing in Qatar, Part XXVI: Phytochemical investigation of Rumex vesicarius
(1995 , Article)The study of Rumex vesicarius revealed the isolation and identification of four anthraquinones (chrysoplanol (I), emodin (II), physcion (III) and rhein (IV) and seven flavonoids (apigenin (V), isoorientin (VI), isovitesin ... -
Constituents of Plants Growing in Qatar, Part XXX: A New Iridoid from Cistanche Phelypaea (L) COUT
(1995 , Article)New iridoid named phelypaeside (1) was isolated from the dried aerial parts of Cistanche phelypae (Orobanchaceae) growing in Qatar -
Constituents of Plants Growing in Qatar, Part XXXI: Lipid constituents of seventeen range plants growing in Qatar
(2002 , Article)A preliminary study on the nutritive values of 17 Qatari range plants -
Constituents of plants growing in Qatar: part xxviii. Constituents Of cistanche phelypaea
( Qatar University , 1995 , Article)Ten compounds were isolated from the methanolic extract of the aerial parts of Cistanche phelypaea (Orobanchaceae) and identified as echinacoside (1), tubuloside A (2), tubuloside E (3), acteoside (4), 2'-acetylacteoside ... -
Constitution-making in the 21st century
( Bloomsbury Qatar Foundation Journals , 2012 , Article)Constitutions have been made or changed in major ways in more than half the countries of the world in recent decades. This article deals with contemporary approaches to constitution-making, organising the analysis around ... -
Constitutional rights to supervised drug injection facilities in Canada
( Bloomsbury Qatar Foundation Journals , 2013 , Article)On September 30, 2011, the Supreme Court of Canada ordered the government of Canada to continue to exempt Vancouver's supervised narcotic injection facility from Canada's criminal drug laws. The controversial clinic, known ... -
Constitutionalisation of International Human Rights Law in the Jurisprudence of the Egyptian Supreme Constitutional Court
( Brill Academic Publishers , 2018 , Article Review)This article examines the status of international human rights law in the Egyptian legal system and investigates how Egypt's Supreme Constitutional Court (SCC) uses international and foreign law in its constitutional ... -
Constitutive analysis for the quantification of hardness decay in a superlattice CrN/NbN hard-coating
( Elsevier B.V. , 2015 , Article)In the present study, a constitutive analysis of the evolution of the mechanical response of a CrN/NbN superlattice coating exposed to high temperature has been performed. Parametric approaches were used to obtain a single ... -
Constitutive models for the prediction of the hot deformation behavior of the 10%Cr steel alloy
( MDPI AG , 2019 , Article)The aim of this paper is to establish a reliable model that provides the best fit to the specific behavior of the flow stresses of the 10%Cr steel alloy at the time of hot deformation. Modified Johnson-Cook and strain-compensated ... -
Constrained metric learning by permutation inducing isometries
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)The choice of metric critically affects the performance of classification and clustering algorithms. Metric learning algorithms attempt to improve performance, by learning a more appropriate metric. Unfortunately, most of ... -
Constraint violations in stochastically generated data: Detection and correction strategies
( Hindawi Publishing Corporation , 2014 , Article)We consider the generation of stochastic data under constraints where the constraints can be expressed in terms of different parameter sets. Obviously, the constraints and the generated data must remain the same over each ... -
Constraint-enhanced role engineering via answer set programming
( Association for Computing Machinery , 2012 , Conference Paper)Role engineering (RE) aims to develop and maintain appropriate role-based access control (RBAC) configurations. However, RE with constraints in place is not well-studied. Constraints usually describe organizations' security ... -
Constraints and Facilitators of Sport Participation in Qatar: Perceptions of Ooredoo Marathon Participants
( Cognizant Communication Corporation , 2021 , Article)The Qatari government has increasingly supported education of Qatar residents on the importance of physical activity, along with developing and improving sport infrastructure, and bidding for and hosting a collection of ... -
Construct Validity in Psychology and Educational Measurement
( Qatar University , 1992 , Article) -
Construct validity of an instrument for assessment of reflective writing-based portfolios of medical students
( Dove Medical Press , 2020 , Article)Purpose: Assessment of reflective writing for medical students is challenging, and there is lack of an available instrument with good psychometric properties. The authors developed a new instrument for assessment of ... -
The construct validity of session RPE during an intensive camp in young male Karate athletes
( CIC Edizioni Internazionali S.r.l. , 2014 , Article)Background: the aim of this study was to assess the validity of the session rating of perceived exertion (RPE) method and two objective HR-based methods for quantifying karate’s training load (TL) in young Karatekas. ...
