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يعرض 161 - 180 نتائج من 282 نتيجة بحث عن '(( significant composition increased ) OR ( significantly (impacted OR impacts) decrease ))', وقت الاستعلام: 0.10s تنقيح النتائج
  1. 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 حسب Assem T. Mohamed (16023355)

    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. …"
  2. 162

    Disrupted harvests: how Ukraine – Russia war influences global food systems – a systematic review حسب Hamid El Bilali (15864930)

    منشور في 2024
    "…This systematic study delves into this intricate interaction, examining scholarly literature to determine the magnitude and complexities of the war’s impact on global agri-food systems. Utilizing a rigourous methodology, we screened 236 articles from the Web of Science database as of March 2023, narrowing the corpus to 62 significant publications that meet comprehensive eligibility criteria. …"
  3. 163

    Drive‐up INR testing and phone‐based consultations service during COVID‐19 pandemic in a pharmacist‐lead anticoagulation clinic in Qatar: Monitoring, clinical, resource utilization... حسب Eman N. Alhmoud (14778706)

    منشور في 2023
    "…</p> <h3> Objective</h3> <p>To evaluate the impact of transitioning from clinic-based anticoagulation management services to drive-up and phone-based services during COVID-19 pandemic in Qatar.…"
  4. 164

    Biomolecular alterations in acute traumatic brain injury (TBI) using Fourier transform infrared (FTIR) imaging spectroscopy حسب Fazle Rakib (5768069)

    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. …"
  5. 165

    Colloid retention and mobilization mechanisms under different physicochemical conditions in porous media: A micromodel study حسب Safna Nishad (16932474)

    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. …"
  6. 166

    Cross-Cultural Awareness and Attitudes Toward Threatened Animal Species حسب Jennifer Bruder (323066)

    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. …"
  7. 167
  8. 168

    Effects of ethanol addition to diesel–biodiesel blends on the CI engine characteristics حسب Fakher Hamdi (21225134)

    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. …"
  9. 169

    Advanced direct air capture of CO<sub>2</sub> using air conditioning systems: a life cycle assessment حسب Namra Mir (17017734)

    منشور في 2025
    "…The integrated system exhibits significantly reduced environmental impacts compared to a standalone DAC unit. …"
  10. 170

    The impact of board gender diversity on the Gulf Cooperation Council’s reporting on sustainable development goals حسب Saeed Alshaiba (21401030)

    منشور في 2024
    "…<p dir="ltr">The topic of gender diversity on corporate boards is becoming increasingly significant globally, particularly in the Gulf Cooperation Council (GCC) region. …"
  11. 171

    Shared Clean Mobility Operations for First-Mile and Last-Mile Public Transit Connections: A Case Study of Doha, Qatar حسب Afnan Fayez Eliyan (19517221)

    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.…"
  12. 172

    Role of family in supporting children with mental disorders in Qatar حسب Abdulnaser A. Fakhrou (16855155)

    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. …"
  13. 173

    Stemming cardiovascular diseases in Qatar حسب Nature Research (16552612)

    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.…"
  14. 174

    Influence of Casting Solvents on CO<sub>2</sub>/CH<sub>4</sub> Separation Using Polysulfone Membranes حسب Roba Almuhtaseb (18877750)

    منشور في 2021
    "…Furthermore, the study declares that with the increase in pressure, the permeability and selectivity values drop for CF and THF. …"
  15. 175

    Ecotoxicological Assessment of Thermally- and Hydrogen-Reduced Graphene Oxide/TiO<sub>2</sub> Photocatalytic Nanocomposites Using the Zebrafish Embryo Model حسب Halema Al-Kandari (6316961)

    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. …"
  16. 176
  17. 177

    Synthesis and analysis of silver–copper alloy nanoparticles of different ratios manifest anticancer activity in breast cancer cells حسب Sara Al Tamimi (9692615)

    منشور في 2020
    "…Furthermore, we observed the cell death pathway by the apoptosis marker Annexin-V which showed non-significant results, while the exposure of AgCu-NP in MCF-7 cells leads to toxicity and also caused significant increase in MMP-9 level, which suggests the cell death may be associated with other pathways such as autophagy and oxidative stress related.…"
  18. 178

    Psychological inoculation against problematic social media use among adolescents: An experimental study حسب Sameha Alshakhsi (17032311)

    منشور في 2025
    "…The passive inoculation group showed a significant decrease in deception only. No changes were observed in the control group. …"
  19. 179

    Hypoxic Stress Induces Complement-Mediated Lysis of Mesenchymal Stem Cells by Downregulating Factor H and CD59 حسب Ramada R. Khaswaneh (22224544)

    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. …"
  20. 180

    Feasibility of a group-based laughter yoga therapy on anxiety and happiness among community-dwelling older adults: A quasi-experimental study حسب Mona Metwally El-Sayed (17725127)

    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). …"