يعرض 621 - 640 نتائج من 1,762 نتيجة بحث عن '(( 300 c decrease ) OR ( 10 (((meer OR meet) decrease) OR (((nn decrease) OR (a decrease)))) ))*', وقت الاستعلام: 0.18s تنقيح النتائج
  1. 621

    Fabrication and characterization of flexible ruthenium oxide-loaded polyaniline/poly(vinyl alcohol) nanofibers حسب Chamakh, M.

    منشور في 2020
    "…Hydrous ruthenium chloride was used as a precursor at different concentrations, and the samples were annealed at 200°C. The morphology of the nanofibers was investigated by scanning electron microscopy. …"
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  2. 622

    Production of phycocyanin by Leptolyngbya sp. in desert environments حسب Schipper, Kira

    منشور في 2020
    "…The optimum biomass productivity was found at a light intensity of 300 μmol·m−2·s−1, with higher light intensities causing a decrease of 15%. …"
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  3. 623

    Analysis of dopant diffusion in molten germanium induced by pulsed nd : yag laser حسب Mousa, Ali M. [علي مطشر موسى]

    منشور في 1995
    "…A monotonic decrease in the sheet rcsostance with increasing energy density for all values of E > 10 J/cm2. …"
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  4. 624

    Production and investigation of flexible nanofibers of sPEEK/PVP loaded with RuO2 nanoparticles حسب Chamakh, Mariem

    منشور في 2021
    "…The samples were synthesized with different concentrations of hydrous ruthenium chloride of 2 wt%, 5 wt%, and 10 wt%, and then annealed at a temperature of 300C for 4 h to form the ruthenium oxide nanoparticles. …"
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  5. 625
  6. 626
  7. 627

    Improvement of both lipid and biomass productivities of Qatar Chlorocystis isolate for biodiesel production and food security حسب Saadaoui, Imen

    منشور في 2018
    "…Several strategies were developed to modulate and improve algae metabolites production to meet the requirements for biodiesel production. Most previous research evidenced that the increase of the lipid content is accompanied by a decrease of the biomass production, which increases the cost of the downstream processing. …"
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  8. 628
  9. 629

    Investigating the effect of polymer-modified graphene oxide coating on RO membrane fouling حسب Ashfaq, Mohammad Y.

    منشور في 2022
    "…The membrane surface characterization showed a decrease in membrane surface roughness from 74.7 nm to 69.0 nm and an increase in membrane hydrophilicity as the contact angle decreased from 41.7 ± 4.50 to 22.0 ± 1.10. …"
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  10. 630
  11. 631
  12. 632
  13. 633
  14. 634

    Prospects of Biocrude Production Potential from Local Diatom حسب Al-Namimi, Sara Mohammed

    منشور في 2020
    "…A marine diatom Nitzchia reversa was grown in 5 sq. m open raceway pond (10 cm culture depth, 500 L culture volume) in the Qatari desert environment. …"
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  15. 635

    Pd nanocrystals encapsulated in MOF-derived Ni/N-doped hollow carbon nanosheets for efficient thermal CO oxidation: unveiling the effect of porosity حسب Ipadeola, Adewale K.

    منشور في 2023
    "…The obtained Pd/Ni-MOF-HNC possesses hollow carbon sheets with a great surface area (153.05 m2 g−1), pore volume (0.12 cm3 g−1), rich Pd/Ni-Nx active sites, Ni-metal defects, rich N-content (7.53 at%), mixed Pd/Ni-oxide phases, and uniformly distributed ultra-small Pd nanocrystals (7.03 ± 1.10 nm); meanwhile, Pd/Ni-MOF-NC formed without etching had no porosity and less Ni-metal defects. …"
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  16. 636

    Association Between Sleep Duration, Food Consumption Patterns and Obesity Among Adolescents in Qatar حسب Mohammed, Sara

    منشور في 2020
    "…Multiple regression analysis revealed that as the WC and BMI increased, consumption of healthy eating pattern decreased by 25% and 10 % respectively (p<0.001) Conclusion: Lack of sufficient sleep and decreased consumption of healthy foods have an association with increased risk of being obese among adolescents…"
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  17. 637

    Tribo-Mechanical, Biocompatibility, and Corrosion Properties Investigation of Zirconium and SST 304 by Application of Hydroxyapatite/Reduced Graphene Oxide/Palladium-Platinium Nano... حسب AlYafei, Huda Fadol S.

    منشور في 2020
    "…In addition, the HA/rGO/Pd-coated SST 304 and the HA/rGO/Pt-coated zirconium substrates were annealed at different temperatures (200, 300, 400, and 600 oC) to investigate their corrosion and wear behaviors. …"
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  18. 638

    Conversion of Organic Municipal Wastes into Biochars and their Effect on Fertility Parameters of Normal and Sabkha Soils of Qatar حسب Ahmedna, Mohamed

    منشور في 2016
    "…Four feedstocks [paper, landscape waste, wood, and a mixture of all three) were pelletized, dried, and used as precursors for the production of biochars following a 4 × 3 × 3 factor factorial design consisting of the type of precursor (four different municipal solid organic precursors), pyrolysis temperatures (300, 500, and 750°C) and residence time (2, 4, and 6 hours). …"
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  19. 639
  20. 640

    Thermal and mechanical stability of microwave sintered cold compact bismuth telluride thermoelectric material حسب Farheen F., Jaldurgam

    منشور في 2022
    "…The compacted pellets were sintered in a microwave at 250 °C and 300 °C. Thermogravimetric analysis (TGA), and differential scanning calorimeter (DSC) analysis were performed to study the thermal stability, and nanoindentation, compression test, and microhardness tests were done for mechanical stability. …"
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