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541
The effect of Hydrogen Peroxide treatments on dental enamel porosity and protein structure and its long-term implications on tooth hardness and optical properties
منشور في 2025"…Hardness analysis revealed significant decreases in microhardness in the bleached group compared to the control group (p < 0.05). …"
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542
Why some firms export? An empirical analysis for manufacturing firms in the MENA region
منشور في 2017"…Government ownership and the relative labour compositions of firms in terms of skilled production workers and in terms of non-production workers tend to exert negative effects on firms' propensity to export. …"
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543
Clinical characteristics and treatment outcomes of coats disease in a Saudi Arabian population
منشور في 2015"…Results: The most common presenting complaint was decreased visual acuity followed by strabismus and then leukocoria. …"
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544
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545
Global, regional, and national burden of stroke and its risk factors, 1990–2019: a systematic analysis for the Global Burden of Disease Study 2019
منشور في 2021"…During the same period, age-standardised rates of stroke incidence decreased by 17·0% (15·0–18·0), mortality decreased by 36·0% (31·0–42·0), prevalence decreased by 6·0% (5·0–7·0), and DALYs decreased by 36·0% (31·0–42·0). …"
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546
Electrically conductive hybrid organic crystals as flexible optical waveguides
منشور في 2022"…In cyclic operation mode, their conductivity decreases less than 1% after 10,000 thermal cycles. …"
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547
Evaluation of the durability and shielding properties of high-strength concrete incorporating locally available materials and carbon additives
منشور في 2026"…The measured electrical properties of the proposed concrete mixes show resistivity of 33.3 Ω-m for FLDUNE and 25.7 Ω-m for FCLDUNE mixes and measured relative complex permittivity of 22.57-j2.22 with relative complex permittivity of 22.57-j2.22. …"
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548
Associations between Bone Mineral Density and WOMAC Scores in Healthy Individuals: Insights from the Qatar Biobank
منشور في 2025"…The Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) is used to assess the severity of symptoms related to pain, stiffness, and function in diseased hip and knee joints. …"
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549
Frugal innovation for sustainable rural development
منشور في 2023"…We developed a classification that identifies the increasing positive and decreasing negative parameters of SDGs to assess the extent to which frugal enterprises contribute to specific SDGs. …"
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550
Application of an empirical transport model to simulate retention of nanocrystalline titanium dioxide in sand columns
منشور في 2008"…Most of the nanoparticles remained in the sand columns, with an increasing then decreasing retained solids pattern. Application of a one-dimensional advection–dispersion flow model, that included two empirical kinetic terms to account for particle retention in the porous media, produced data fits that followed the general trend of the data, but did not truly capture the concentration maxima in the data sets. …"
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551
n-Hexadecane Fuel for a Phosphoric Acid Direct Hydrocarbon Fuel Cell
منشور في 2015"…The objective of this work was to examine fuel cells as a possible alternative to the diesel fuel engines currently used in railway locomotives, thereby decreasing air emissions from the railway transportation sector. …"
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article -
552
Kinetics and thermodynamics of acoustic release of doxorubicin from non-stabilized polymeric micelles
منشور في 2010"…Our model showed that the residual activation energy for destruction decreased with increasing acoustic intensity. In addition, higher temperatures were found to encourage micelle destruction and hinder micelle re-assembly.…"
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553
A Comprehensive Method of Ion Exchange Resins Regeneration and Its Optimization for Water Treatment
منشور في 2020"…In general, it was observed that the conductivity decreases with time until one point is reached and then starts to increase as a result of resin saturation. …"
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bookPart -
554
A Case Study in Qatar for Optimal Energy Management of an Autonomous Electric Vehicle Fast Charging Station with Multiple Renewable Energy and Storage Systems
منشور في 2020"…This interest has focused mainly on reducing the reliance on fossil fuel-based means of transportation and decreasing the harmful emissions produced from this sector. …"
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555
Total Quality Implementation on Marine Transportation Association Under Natural Disruption of COVID-19 Pandemic
منشور في 2021"…The total lockdown or partial lockdown devised by countries all over the world, which means that most economic activities were postponed until the outbreak, is contained. …"
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556
Effects of COVID-19 on Autism Spectrum Disorder in Qatar
منشور في 2024"…Parents also reported decreased access to family and social support networks, as well as decreased quality of clinical and community support. …"
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557
Antibiotic use and escherichia coli resistance trends for quinolones and cotrimoxazole in Sweden
منشور في 2002"…The increase in norfloxacin and ciprofloxacin resistance started relatively simultaneously in all hospitals, around 1991. …"
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article -
558
12/15-Lipoxygenase-Derived Lipid Metabolites Induce Retinal Endothelial Cell Barrier Dysfunction: Contribution of NADPH Oxidase
منشور في 2013"…Treatment of REC with HETE also increased ROS generation and expression of NOX2 and pVEGF-R2 and decreased pSHP1 expression. Treatment of diabetic mice with baicalein significantly decreased retinal HETE, ICAM-1, VCAM-1, IL-6, ROS generation, and NOX2 expression. …"
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559
COVID-19 may have increased global support for universal health coverage: multi-country observational study
منشور في 2023"…It also examined which psychological factors related to the socioeconomic interdependence exposed by the pandemic may be associated with a potential change.…"
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560
Detailed organic characterization of process water to evaluate reverse osmosis membrane fouling in industrial wastewater treatment
منشور في 2024"…One of the major waste streams within the oil and gas (O&G) industry is produced and process water generated during hydrocarbon production and treatment, respectively. …"
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article