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161
Evaluation of highly active and stable SiO<sub>2</sub> supported Fe-based catalysts for the catalytic methane decomposition into COx free hydrogen and CNTs
منشور في 2023"…Moreover, the catalytic activity in terms of methane conversion, methane decomposition rate, growth activities as well as carbon yields increased with an increase in the Fe loading. At an operating temperature of 650 °C and a GHSV of 8000 h<sup>−1</sup>, the 75FS catalyst, with a composition of 75 wt%/SiO<sub>2</sub>, demonstrated the highest methane decomposition rate of 0.75gCH<sub>4</sub>/g-cat.h among the investigated catalysts. …"
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162
Effect of Flexural NSM-FRP Bars on the Shear Strength of Reinforced Concrete Beams
منشور في 2019احصل على النص الكامل
doctoralThesis -
163
Biomolecular alterations in acute traumatic brain injury (TBI) using Fourier transform infrared (FTIR) imaging spectroscopy
منشور في 2021"…<p dir="ltr">Acute injury is one of the substantial stage post-traumatic brain injury (TBI) occurring at the moment of impact. Decreased metabolism, unregulated cerebral blood flow and direct tissue damage are triggered by acute injury. …"
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164
Colloid retention and mobilization mechanisms under different physicochemical conditions in porous media: A micromodel study
منشور في 2021"…However, for hydrophobic colloids, changes in solution chemistry significantly increase colloid retention where the colloid interaction become attractive with the increase in ionic strength and decrease in pH values. …"
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165
Cross-Cultural Awareness and Attitudes Toward Threatened Animal Species
منشور في 2022"…<p dir="ltr">The preservation of our planet’s decreasing biodiversity is a global challenge. Human attitudes and preferences toward animals have profound impacts on conservation policies and decisions. …"
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166
Effects of ethanol addition to diesel–biodiesel blends on the CI engine characteristics
منشور في 2024"…Ethanol addition has a more significant impact, with an increase in engine power of 16% at 1700 rpm and 13% at 2500 rpm for 2.5% and 5% ethanol blends, respectively. …"
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167
Advanced direct air capture of CO<sub>2</sub> using air conditioning systems: a life cycle assessment
منشور في 2025"…The integrated system exhibits significantly reduced environmental impacts compared to a standalone DAC unit. …"
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168
Shared Clean Mobility Operations for First-Mile and Last-Mile Public Transit Connections: A Case Study of Doha, Qatar
منشور في 2022"…Moreover, adding the carpooling option can significantly decrease the number of relocations operations at a minimal impact on the commuters’ trip performance.…"
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169
Role of family in supporting children with mental disorders in Qatar
منشور في 2023"…<h3>Background</h3><p dir="ltr">Mental disorders can significantly impact children's lives and affect their emotional, cognitive, and behavioral development. …"
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170
Stemming cardiovascular diseases in Qatar
منشور في 2015"…<p>A new study by researchers at the Weill Cornell Medical College in New York and in Doha, Qatar, suggests that public health strategies could have a major impact on the incidence of cardiovascular diseases in the Qatari population.…"
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171
Ecotoxicological Assessment of Thermally- and Hydrogen-Reduced Graphene Oxide/TiO<sub>2</sub> Photocatalytic Nanocomposites Using the Zebrafish Embryo Model
منشور في 2019"…However, both nanocomposites should be used with caution at concentration higher than the NOEC (400 mg/L), in particular RGOTi, which significantly (i) caused pericardial and yolk sac edema; (ii) decreased the hatching rate, locomotion, and hematopoietic activities; and (iii) affected the heart rate. …"
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172
Relationship between Asymmetry Indices, Anthropometric Parameters, and Physical Fitness in Obese and Non-Obese High School Students
منشور في 2022"…Grouping participants based on body fat percentage had a significant effect on the AIs (p < 0.05) of the CMJ and YBT. …"
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173
Psychological inoculation against problematic social media use among adolescents: An experimental study
منشور في 2025"…The passive inoculation group showed a significant decrease in deception only. No changes were observed in the control group. …"
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174
Hypoxic Stress Induces Complement-Mediated Lysis of Mesenchymal Stem Cells by Downregulating Factor H and CD59
منشور في 2024"…Severe hypoxia found to decrease the survival chances of MSCs after transplantation; however, little is known about the impact of severe hypoxia on modulating the complement system activity and its effect on MSCs survival. …"
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175
Feasibility of a group-based laughter yoga therapy on anxiety and happiness among community-dwelling older adults: A quasi-experimental study
منشور في 2024"…</p><p><br></p><h3>Results</h3><p dir="ltr">A statistically significant decrease in anxiety level among the study group compared to the control group (Pre = 16.68 (7.35), immediate = 6.65 (2.89), post three-month = 7.68 (2.75), p=<0.001 and effect size = 0.715). …"
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176
YOLO-DefXpert: An Advanced Defect Detection on PCB Surfaces Using Improved YOLOv11 Algorithm
منشور في 2025"…<p dir="ltr">Surface defects in Printed Circuit Boards (PCBs), which arise during manufacturing, significantly impact product quality and directly influence equipment performance, stability and reliability. …"
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177
Enhancing waste sorting and recycling efficiency: robust deep learning-based approach for classification and detection
منشور في 2024"…The material composition and volume of urban solid waste are key considerations in processing, managing, and utilizing city waste. …"
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178
Insights into rechargeable Zn-air batteries for future advancements in energy storing technology
منشور في 2023"…Therefore, this review provides significant insights into the fundamentals of Zn air battery system in terms of the underlying electrochemical mechanism, composition/structural performance relationship of different battery components. …"
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179
Trends of the Dementia Burden in South Asia: An Analysis of 2021 Global Burden of Disease Study
منشور في 2025"…</p><h3>Results</h3><p dir="ltr">A slight decrease in incidence rates from 80.57 to 79 per 100,000 was observed, alongside a significant increase in mortality rates from 14.11 to 17.2 per 100,000. …"
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180
Evidence and gaps in clinical outcomes of novel pharmacologic therapies for sickle cell disease: A systematic literature review highlighting insights from clinical trials and real-...
منشور في 2025"…The high discontinuation rate and results of the STAND trial led to a significant decrease in the use of crizanlizumab. The HOPE trial demonstrated a 51 % improvement in hemoglobin response and a reduction in hemolytic markers in patients treated with voxelotor. …"