تصفح Academic حسب العنوان
السجلات المعروضة 19851 -- 19870 من 26387
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Structural topology optimization considering complexity
( American Society of Civil Engineers (ASCE) , 2017 , Conference Paper)As topology optimization is a free-form approach to optimizing structural layout, it has a tendency to design structures that are topologically complex. In large-scale structures, this complexity drives construction costs ... -
Structural, dielectric and ferroelectric properties of lead-free Na0.5Bi0.5TiO3 ceramics prepared by spark plasma sintering technique
( Scientific Publishers , 2016 , Article)Lead-free Na0.5Bi0.5TiO3 (NBT) fine-grained ceramics were prepared by spark plasma sintering method. Single phase ceramics with an ABO3 perovskite structure were confirmed by X-ray diffraction method. The grain morphology ... -
Structural, mechanical and thermal characteristics of Al-Cu-Li particle reinforced Al-matrix composites synthesized by microwave sintering and hot extrusion
( Elsevier Ltd , 2019 , Article)In this study, Al-Cu-Li (5, 10 and 15 vol%) alloy particles reinforced Aluminum matrix composites were synthesized by powder metallurgy route incorporating microwave sintering and hot extrusion processes. The effects of ... -
Structural, morphological and optical properties of PEDOT:PSS/QDs nano-composite films prepared by spin-casting
( Elsevier B.V. , 2016 , Article)This paper describes the structural, morphological and optical properties of the nano-composite of poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) and quantum dots (QDs). The ZnSe and CdSe QDs have been ... -
Structural, wear and thermal behaviour of Cu–Al2O3–graphite hybrid metal matrix composites
( SAGE Publications Ltd , 2020 , Article)The aim of the present study is to investigate the structural, wear and thermal behaviour of Cu–Al2O3–graphite hybrid metal matrix composites. Copper matrix composites with Al2O3–graphite reinforcement (0.5-0.5, 1.0-1.0, ... -
Structure and Rheological Properties of Bovine Aortic Heart Valve and Pericardium Tissue: Implications in Bioprosthetic and Tissue-Engineered Heart Valves
( Hindawi Limited , 2019 , Article)Heart valve (HV) diseases are among the leading causes of cardiac failure and deaths. Of the various HV diseases, damaged HV leaflets are among the primary culprits. In many cases, impaired HV restoration is not always ... -
Structure Mixture Response Of Buildings Due To Simulated Earthquake Loading
( Qatar University , 2002 , Article)This paper presents two case studies to evaluate the performance of the structure mixture theory in the earthquake response analysis of buildings. In the first case study, the actual earthquake responses of the two-story ... -
Structure of alkylcarbonate + n-alkane mixed fluids
( American Chemical Society , 2014 , Article)The properties of dialkylcarbonate + n-alkane mixed fluids were studied both from macroscopic and from microscopic viewpoints using thermophysical measurements combined with classic molecular dynamics simulations and DFT ... -
The structure of tetraketones in the solid state: the crystal structure of 1,6- Diphenylhexane-1,3,4,6-tetrone
( Qatar University , 1994 , Article)The crystal structure of l,6-diphenylhexane-l,3,4,6-tetrone was determined, CjgHi4O4, M 294.31 monoclinic, space group P2j/n (# 14), a 5.1192 (6) A, b 9.085 (9) A, c 15.366 (4) A, b 97.91 (4)°, p (calc) 1.362 g/cm3, Z 2, ... -
Structure, nanomechanics, and dynamics of dispersed surfactant-free clay nanocomposite films
( John Wiley and Sons Inc. , 2018 , Article)The current work presents a new approach to achieve high quality dispersion of surfactant-free nanoclay tactoid particles in sub-micron thin films despite the absence of organic modifier. Natural Montmorillonite particles, ... -
Structure-activity relationship investigation of methoxy substitution on anticancer pyrimido[4,5-c]quinolin-1(2H)-ones
(2013 , Article)Pyrimido[4,5-c]quinolin-1(2H)-one derivatives were shown to exert interesting biological activities including anticancer, antimicrobial, and cardiovascular. Substitution with methoxy groups played a crucial role in the ... -
Structure-Based Virtual Screening to Identify Novel Potential Compound as an Alternative to Remdesivir to Overcome the RdRp Protein Mutations in SARS-CoV-2.
( Frontiers Media , 2021 , Article)The number of confirmed COVID-19 cases is rapidly increasing with no direct treatment for the disease. Few repurposed drugs, such as Remdesivir, Chloroquine, Hydroxychloroquine, Lopinavir, and Ritonavir, are being tested ... -
Structure-guided engineering and molecular simulations to design a potent monoclonal antibody to target aP2 antigen for adaptive immune response instigation against type 2 diabetes
( Frontiers Media SA , 2024 , Article)Introduction: Diabetes mellitus (DM) is recognized as one of the oldest chronic diseases and has become a significant public health issue, necessitating innovative therapeutic strategies to enhance patient outcomes. ... -
Structure-thermal expansivity relation for isotropic polyoxymethylene sheets
( John Wiley & Sons, Ltd. , 1994 , Article)A detailed parametric mapping analysis of the thermal expansion coefficient for isotropic polyoxymethylene is presented. The molecular composite model has been computerized to investigate the variation of the thermal ... -
Structured knowledge creation for Urdu language: A DBpedia approach
( Wiley-Blackwell , 2023 , Article)Wikipedia information is extracted by DBpedia and linked to other web resources as Linked Open Data, which is an important contribution to the field of semantics. As part of its internationalisation endeavour, DBpedia now ... -
Structured Multi-Skill Assessment (SMSA) in pharmacy: A contextual adaptation for authentic assessment for colleges of pharmacy and beyond
( Bloomsbury Qatar Foundation Journals , 2015 , Article)There is a need for a contextual adaptation model of the Objective Structured Clinical Examination (OSCE) procedures and assessment methods into diverse contexts with great cultural diversity that is both affordable and ... -
The Structures And Mode Of Formation Of Some Cyclodiphosphazane Derivatives With Urea And Thiourea
( Qatar University , 1986 , Article)The methods of preparation and possible reaction mechanisms for the formation of some geminal and nongeminal aminocyclodiphosph (v) azanes of the type (II - V) are discussed. These cyclodiphosphazanes obtained from the ... -
Structures, processes and outcomes of objective structured clinical examinations in dental education during the COVID-19 pandemic: A scoping review
( Wiley-Blackwell , 2022 , Article)Introduction: Objective structured clinical examinations (OSCEs) are an essential examination tool within undergraduate dental education. Fear of spread of the COVID-19 virus led to dental institutions exploring alternative ... -
Structure–activity relationship of piperine and its synthetic amide analogs for therapeutic potential to prevent experimentally induced ER stress in vitro
( Springer Netherlands , 2017 , Article)Endoplasmic reticulum (ER) is the key organelle involved in protein folding and maturation. Emerging studies implicate the role of ER stress in the development of chronic kidney disease. Thus, there is an urgent need for ... -
Structuring institutionalization of Digitally-Enabled Service Transformation in public sector: Does actor or structure matters?
( Association for Information Systems , 2016 , Conference Paper)Failure to identify the right institutionalization framework has caused derailments of major public sector Digitally-Enabled Service Transformation (DEST) projects in the UK, such as the NHS-National Program for IT (NHS-NPfIT) ...
