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Now showing items 6946-6965 of 25697
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The effect of doping MoSe2 by clusters of noble metals on its adsorption for NH3
( Elsevier , 2022 , Article)The development of industrial activities is associated with negative impacts on the quality of the environment including emission of hazardous gases. Therefore, it is critical to produce sensitive and selective gas detectors ... -
Effect of Double Decker Flyover Construction on Urban Fabric of Ashok Rajpath, Patna, India
( Qatar University Press , 2023 , Conference Paper)Rapid urbanization and increase in number of vehicles has led to diminishing vehicular spaces on the street. This has led to construction of flyovers, which has dominated the streets. They reduce the “Sky-View” factor and ... -
The effect of downsizing on innovation outputs: The role of resource slack and constraints
( SAGE Publications , 2021 , Article)Although the practice of downsizing is prevalent, its effects on organisational outcomes remain poorly understood. This article examines how and when downsizing affects organisational innovation. Using a unique data set ... -
Effect Of Drilling Fluids Contaminations On Saudi Reservoir Rock Wettability
( Qatar University , 1998 , Article)Wettability is a key parameter that affects the petrophysical properties of reservoir rocks. Mud nitrate during drilling pay zone causes a significant change in rock wettability that will affect the oil production and ... -
Effect of EDDY and manual dynamic activation techniques on postoperative pain in non-surgical retreatment: a randomized controlled trial
( BMC , 2023 , Article)BACKGROUND: During non-surgical retreatment process, the products such as dentin debris, root canal fillings, irrigation solutions, microorganisms and remaining pulp tissues can extrude to the apical area and can cause the ... -
Effect of Electrical Muscular Stimulation on Occupational Activities: a Systematic Review and Meta-Analysis
( Qatar University Young Scientists Center - Qatar University , 2024 , Conference Paper)Background Occupational therapy (OT) is a branch of health care that focuses on helping people of all ages achieve independence in their daily activities. OT treatment may include a variety of interventions, such as ... -
Effect of electroless bath composition on the mechanical, chemical, and electrochemical properties of new NiP-C 3 N 4 nanocomposite coatings
( Elsevier B.V. , 2019 , Article)C3N4 nanosheets, which have high hardness and excellent thermal and chemical stability, were used in the electroless nickel-phosphorous (NiP) bath to deposit the NiP–C3N4 nanocomposite coatings (NCCs) on API X100 carbon ... -
Effect of electrolytes on electrokinetics and flocculation behavior of bentonite-polyacrylamide dispersions
( Elsevier Ltd , 2018 , Article)© 2018 Elsevier B.V. In this study, the influence of electrolytes on bentonite dispersions flocculated with different polyacrylamides varying in charge type, density and molecular weights has been investigated. The presence ... -
Effect of emphasis spread on coronal stop articulation in Qatari Arabic
( Linguistic Society of America , 2020 , Conference Proceedings)Emphasis (contrastive uvularisation) in Arabic spreads from an emphatic consonant to neighboring segments (Davis1995). The effect of emphasis spread on a consonant is manifested as lowering of its spectral mean (Jongman ... -
Effect of emphasis spread on VOT in coronal stops in Qatari Arabic
( Cambridge University Press , 2021 , Article)Emphasis (contrastive pharyngealization of coronals) in Arabic spreads from an emphatic consonant to neighboring segments. Previous research suggests that in addition to changing spectral characteristics of adjacent segments, ... -
EFFECT OF ENDOPLASMIC RETICULUM STRESS MEDIATED BY HYPERGLYCEMIA ON BARRIER FUNCTION IN RETINAL CELLS
(2016 , Master Thesis)Background: Diabetic Retinopathy (DR) is an inflammatory disease mainly characterized by the dysfunction of the retinal blood vessels. Several studies reported a possible link between the hyperglycemia and the activation ... -
The Effect of ERP Systems Competences on Business Process and Organizational Performance
(2016 , Article)Due to the research designs used and the nature of the variables included in prior research models, the evidence on the contribution of ERP systems to firm performance is not entirely consistent. This study synthesizes the ... -
Effect of ethylene-vinyl acetate copolymer on kinematic viscosity and thermal stability of jojoba, date seed, and waste cooking oils in lubricant applications
( Springer Science and Business Media Deutschland GmbH , 2022 , Article)Vegetable oils possess excellent lubricant properties, but one reason limiting their application as lubricants is their low kinematic viscosity. This study investigated how the addition of ethylene-vinyl acetate copolymer ... -
Effect of expandable graphite on thermal and flammability properties of poly(lactic acid)-starch/poly(ɛ-caprolactone) blend systems
( John Wiley and Sons Inc. , 2018 , Article)The effect of expandable graphite (EG) on the flammability and thermal stability of a poly(lactic acid) (PLA)-starch/poly(ɛ-caprolactone) (PCL) blend was investigated. The samples were prepared by melt-mixing and characterized ... -
The effect of expanded graphite on the flammability and thermal conductivity properties of phase change material based on PP/wax blends
( Springer , 2015 , Article)The study reports on the flammability, thermal stability, impact properties and thermal conductivity of shape-stabilized phase change materials based on a soft Fischer–Tropsch paraffin wax blended with polypropylene (PP). ... -
Effect of expanded graphite on the phase change materials of high density polyethylene/wax blends
( Elsevier , 2015 , Article)Phase change materials fabricated from high density polyethylene (HDPE) blended with 40 or 50 wt% commercial wax (melting point of 43.08�C) and up to 15 wt% expanded graphite (EG) were studied. Techniques including scanning ... -
The effect of expanded graphite on the physical properties of conductive EVA/wax phase change blends for thermal energy storage
( John Wiley & Sons, Ltd. , 2015 , Article)A study of the morphology, dynamic mechanical, impact, and tensile properties of ethylene vinyl acetate copolymer (EVA)/expanded graphite (EG) and EVA/wax/EG composites is presented. The composites were prepared by melt ... -
The effect of expanded graphite on the thermal stability, latent heat, and flammability properties of EVA/wax phase change blends
( John Wiley & Sons, Ltd , 2015 , Article)This article reports on the morphology, melting and crystallization behavior, thermal stability, flammability and thermal conductivity of shape-stabilized phase-change materials (PCM) for thermal energy storage, based on ... -
The Effect of Experimental Recuperative and Appetitive Post-lunch Nap Opportunities, With or Without Caffeine, on Mood and Reaction Time in Highly Trained Athletes
( Frontiers Media S.A. , 2021 , Article)Purpose: To investigate the effects of placebo (PLA), 20 min nap opportunity (N20), 5mg·kg−1 of caffeine (CAF), and their combination (CAF+N20) on sleepiness, mood and reaction-time after partial sleep deprivation (PSD; ... -
Effect of extraction solvents on polyphenols and antioxidant activity of medicinal halophytes
( Pakistan Botanical Society , 2016 , Article)This study was conducted to determine the most effective solvent for extraction of polyphenols and antioxidant activity of medicinally important coastal halophytes (Thespesia populneoides, Salvadora persica, Ipomoea ...