يعرض 241 - 260 نتائج من 1,764 نتيجة بحث عن '(( 5 ((step decrease) OR (mean decrease)) ) OR ( 10 (((meer OR per) decrease) OR (a decrease)) ))', وقت الاستعلام: 0.27s تنقيح النتائج
  1. 241

    Box-Behnken approach for optimization of Cr(III) removal from a real tanning effluent using powdered marble حسب Boujelben, R.

    منشور في 2022
    "…The results showed that the maximum uptake (> 99%) was obtained at a chromium initial concentration of 0.758�g/L, pH = 5.0 and using 6% (w:v) of powdered marble. Adsorption isotherm was satisfactorily described by Langmuir model. …"
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  2. 242

    Environment Degradation and Economic Growth in the Qatar Economy: Evidence from a Markov Switching Equilibrium Correction Model حسب Charfeddine, Lanouar

    منشور في 2016
    "…After reaching a critical level of income, the spending on environment protection is increased, and hence environment degradation tend to decrease. …"
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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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