يعرض 661 - 680 نتائج من 1,767 نتيجة بحث عن '(( 10 100 decrease ) OR ( 10 (((meer OR peter) decrease) OR (((nn decrease) OR (a decrease)))) ))*', وقت الاستعلام: 0.18s تنقيح النتائج
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    Towards understanding the effects of climatic and environmental factors on solar PV performance in arid desert regions (Qatar) for various PV technologies حسب Touati F.

    منشور في 2012
    "…However, amorphous PVs prove to be more robust against dust settlement than mono-crystalline PVs and hence are more suitable for implementation in desert climates like Qatar unless cleaning strategies are devised. It was estimated that 100 days of dust accumulation over mono-crystalline PV panels, caused the efficiency to decrease by around 10%. …"
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    Fabrication of Selective Sensors for Hg2+ Traces in Water Using Graphene Decorated with Metal Nanoclusters حسب Ayesh, Ahmad I.

    منشور في 2016
    "…The system consists of three main chambers (source, mass filter, and deposition chambers) that were pumped initially to a base pressure of 10-8 mbar using two turbo pumps. …"
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    Experimental investigation on the compressibility of Al/Al2O3 nanocomposites حسب Wagih, Ahmed

    منشور في 2016
    "…The results showed that the grain size of milled powders was about 43 nm with a noticeable presence of agglomerates at 10 wt.% of Al2O3. …"
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