يعرض 621 - 640 نتائج من 746 نتيجة بحث عن '(( 50 ((mean decrease) OR (a decrease)) ) OR ((( 12 m decrease ) OR ( age gender decrease ))))*', وقت الاستعلام: 0.17s تنقيح النتائج
  1. 621
  2. 622

    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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  3. 623

    A New Electrocoagulation Electrode Configuration for The Treatment of Secondary Treated Wastewater حسب Alkhatib, Afnan

    منشور في 2019
    "…The experimental results showed that the maximum removal efficiency of TP is 88.3, 68.2 and 46.0 % and COD reduction of 82.4, 66.8 and 43.3 % with electrode mass consumption of 0.02, 0.15 and 2.12 g under running conditions of 4.3 mA/cm2 current density and 30 min electrolysis time for AC-DEP, AC and DC, respectively.…"
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  4. 624
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  7. 627
  8. 628

    Long-term performance analysis and power prediction of PV technology in the State of Qatar حسب Touati F.

    منشور في 2017
    "…Results show that due to panel dusting for eight months, the PV output power decreased by 50%. Also, owing to lower ambient temperatures, clearer sky and cleaner panels due to occasional rainfall, the PV panels show higher output power in Winter than in Summer season. …"
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  9. 629

    Algal-algal bioflocculation enhances the recovery efficiency of Picochlorum sp. QUCCCM130 with low auto-settling capacity حسب Saadaoui, I.

    منشور في 2023
    "…QUCCCM31 and Tetraselmis sp. QUCCCM50 presenting a cell size of ∼2 μm, ∼5 μm, and ∼15 μm, respectively, were selected to be subjected to the harvesting optimisation experiments. …"
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  10. 630

    Selective adsorption of carbon dioxide, methane and nitrogen using resorcinol-formaldehyde-xerogel activated carbon حسب Awadallah, Ahmed

    منشور في 2017
    "…Adsorption/desorption isotherms of CO2, CH4, and N2 gases onto RF-ACX adsorbent were measured gravimetrically by a magnetic suspension microbalance at five different temperatures (20, 30, 40, 50 and 60 °C) in the pressure range of 0–1 MPa. …"
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  11. 631
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  16. 636
  17. 637

    Combined influence of temperature and flow rate of feeds on the performance of forward osmosis حسب Hawari, Alaa H.

    منشور في 2016
    "…The experimental results also showed that the membrane flux increased by 93.3% due to temperature increase from 20 to 26 °C and the flow rate from 1.2 to 3.2 L/min using a 0.5 M NaCl solution as the draw solution and distilled water as the feed solution (FS).…"
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  18. 638
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  20. 640