يعرض 181 - 200 نتائج من 1,764 نتيجة بحث عن '(( 10 ((meters decrease) OR (((a decrease) OR (mean decrease)))) ) OR ( 50 mg decrease ))*', وقت الاستعلام: 0.20s تنقيح النتائج
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    Effect of using Cement Kiln Dust as a nano-material on the strength of cement mortars حسب Alnahhal, Wael

    منشور في 2017
    "…The CKD was milled up to 4 hours in a planetary ball mill. In addition to the control cement mortar mixture with 0% CKD, a total of 28 concrete mortar mixtures were prepared with four different replacement percentages of nano-CKD (5, 10, 15, and 20 %), and seven different milling times (1, 1.5, 2, 2.5, 3, 3.5, and 4 hours). …"
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    Optimization of cultivation conditions for combined nutrient removal and CO2 fixation in a batch photobioreactor حسب Al Ketife, Ahmed MD

    منشور في 2017
    "…At 22% CO2 the Rc and μ decreased by around an order of magnitude, and nutrient removal also decreased to 79% and 50% for N and P, respectively. …"
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  15. 195

    Textile-Reinforced Mortar (TRM) System as a Strengthening Technique on Reinforced Concrete Beams حسب Afzal, Muhammad Shekaib

    منشور في 2016
    "…The cement-based mortar used in TRM acts as a barrier against chloride ions penetration thus protecting the main reinforcing bars from corrosion attack. …"
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    Mechanical Behavior of a Novel Nanocomposite Polysulphone - Carbon Nanotubes Membrane for Water Treatment حسب Wang, Kui

    منشور في 2016
    "…The commercial CNTs had a lengths of 1 ?m to 10 ?m and outer diameters of 10 nm to 20 nm (corresponded aspect ratios ranging from 50 to 1000), with purity >95% and BET surface area of 156 m2/g. …"
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