يعرض 641 - 660 نتائج من 823 نتيجة بحث عن '(( 50 ((ms decrease) OR (a decrease)) ) OR ((( 1 b decrease ) OR ( a step decrease ))))*', وقت الاستعلام: 0.27s تنقيح النتائج
  1. 641
  2. 642

    Structural and magnetic properties of Ni1-xZnxFe 2O4 (x=0, 0.5 and 1) nanopowders prepared by sol-gel method حسب Gao P.

    منشور في 2013
    "…A series of nanostructured Ni-Zn ferrites Ni1-xZn xFe2O4 (x=0, 0.5 and 1) with a grain size from 24 to 65 nm have been prepared with a sol-gel method. …"
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  3. 643
  4. 644
  5. 645
  6. 646
  7. 647
  8. 648
  9. 649

    Role of organic cation in modern lead-based perovskites حسب Alwarappan G.

    منشور في 2019
    "…Hybrid organic-inorganic metal perovskites (ABX3, A- organic cation, B-metal ion, X-halide ion) have shown significant potential as thin-film solar cells or Dye solar cells (DSC) materials. …"
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  10. 650

    Efficacy of FRCM systems in flexural strengthening of RC T-beams حسب Wakjira T.G.

    منشور في 2018
    "…Eight T-shaped RC beams with two different flexural reinforcement ratios (?s = 0.40% and ?s = 1.02%) were constructed and tested as simply supported under monotonic three-point loading. …"
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  11. 651
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  15. 655

    Fish communities and environmental variables during dry season in Pampanga estuary (Philippines) حسب Abroguena, Jeff Bogart R.

    منشور في 2020
    "…The aims were: (a) to examine the variations of fish diversity and community structure, in relation to neap and spring tides and estuary zones and; (b) to examine the influence of environmental variables on fish communities. …"
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  16. 656
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  18. 658

    Synthesis of silica supported ni and cu catalyst for carbon dioxide methanation reaction حسب Aheed, Ahmed

    منشور في 2019
    "…The activity and product selectivity and stability for methanation reaction on Ni/SiO2 and Cu/SiO2 catalysts have been evaluated using a flow reactor between 50ºC - 650ºC. The as-synthesized catalysts were characterized using XRD, SEM, TEM to understand the structural properties. …"
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  19. 659

    Fluid-Structure-Acoustic coupling analysis for external laminar and turbulent fluid flows حسب Tohid, Adibi

    منشور في 2023
    "…The results indicate that the transmission loss is 27% more at the elastic plate’s highest position. By decreasing the length of the elastic plate by 50%, the mean transmission loss is reduced by 9%. …"
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  20. 660