يعرض 421 - 440 نتائج من 1,800 نتيجة بحث عن '(( 50 ((mean decrease) OR (a decrease)) ) OR ((( a system decrease ) OR ( a 10 decrease ))))*', وقت الاستعلام: 0.22s تنقيح النتائج
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    Influence of natural gas composition on adsorption in calcite Nanopores: A DFT study حسب Elbashier E.

    منشور في 2021
    "…The nanopores absorbed up to 28 and 24 molecules of CH4 and CO2, respectively, and the adsorption energy decreased to −0.0062 and −0.0075 eV/Å2 for each. Although the nanopore was filled spatially by the molecules, its surface still has an affinity to absorb more gas molecules energetically. …"
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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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  19. 439

    Experimental study of exhaust emissions and performance of a dual fuel IDI diesel engine حسب Badr, O.

    منشور في 1999
    "…Dual fuel engines of the compression ignition type provide an alternative approach for I.C. engines to improve economy, reduce exhaust emissions and achieve a greater power. The present contribution is an experimental investigation to evaluate such a statement using a modified Ricardo E6 indirect injection diesel engine. …"
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