يعرض 241 - 260 نتائج من 1,796 نتيجة بحث عن '(( i e decrease ) OR ( 10 ((steel decrease) OR (((a decrease) OR (mean decrease)))) ))*', وقت الاستعلام: 0.20s تنقيح النتائج
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    Environmental impacts of solar photovoltaic systems: A critical review of recent progress and future outlook حسب Tawalbeh M.

    منشور في 2021
    "…Recycling solar cell materials can also contribute up to a 42% reduction in GHG emissions. The present study offers a valuable management strategy that can be used to improve the sustainability of PV manufacturing processes, improve its economic value, and mitigate its negative impacts on the environment.…"
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  15. 255

    EFFECT OF PHENOL AS A CONTAMINANT ON THE WILD PEARL OYSTER PINCTADA IMBRICATA RADIATA IN QATAR: ECOTOXICOLOGICAL APPROACH AND USE OF OYSTER SHELL STRUCTURE AS A POTENTIAL MITIGATIO... حسب BARAH, FARAHNAZ GHOLAMREZA

    منشور في 2022
    "…The highest phenol removal of real olive wastewater was at pH 10 and room temperature by OSNP-S (56.78%). Based on the adsorption isotherm model, the adsorption capacity decreased by temperature and the coefficient of determination R2 of the Freundlich adsorption isotherm model showed the best equilibrium data for phenol adsorption with the physical interaction adsorption process. …"
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  16. 256
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    Online monitoring of climatic parameters: a statistical study about environmental changes in Qatar حسب Mahmood, Tahir

    منشور في 2016
    "…In this study, we have focused on monitoring of temperature and rainfall pattern in Qatar through different control charting schemes, i.e., memory less (Shewhart) and memory type (EWMA and CUSUM) control charting structures; while time series analysis was performed for the period of 1990-2012. …"
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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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