تصفح Academic حسب العنوان
السجلات المعروضة 4583 -- 4602 من 25628
-
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. ... -
Constructability and Economical Comparison Between Two Proposed Permanent Shoring Systems in Qatar: A Case Study
( Qatar Univesrity Press , 2020 , Conference Paper)This paper introduces the constructability and economic feasibility study of using one of the proposed two types of permanent shoring system for a highway project in Qatar. The cast-in-situ cantilever retaining wall and ... -
Constructing an Intelligent Model Based on Support Vector Regression to Simulate the Solubility of Drugs in Polymeric Media
( MDPI , 2022 , Article)This study constructs a machine learning method to simultaneously analyze the thermodynamic behavior of many polymer-drug systems. The solubility temperature of Acetaminophen, Celecoxib, Chloramphenicol, D-Mannitol, ... -
Constructing and testing the psychometrics of an instrument to measure the attitudes, benefits, and threats associated with the use of Artificial Intelligence tools in higher education
( Kaplan Singapore , 2023 , Article)Under the acceleration in the body of information regarding AI technology and the paucity of instruments that assess the views and reactions of consumers, we have constructed this instrument to measure the attitudes, ... -
Constructing three-dimensional mesoporous bouquet-posy-like TiO2 superstructures with radially oriented mesochannels and single-crystal walls
( American Chemical Society , 2017 , Article)Constructing three-dimensional (3-D) hierarchical mesostructures with unique morphology, pore orientation, single-crystal nature, and functionality remains a great challenge in materials science. Here, we report a confined ...
