يعرض 1,081 - 1,100 نتائج من 1,792 نتيجة بحث عن '(( 10 ((greater decrease) OR (((nn decrease) OR (a decrease)))) ) OR ( 10 i decrease ))*', وقت الاستعلام: 0.16s تنقيح النتائج
  1. 1081
  2. 1082
  3. 1083
  4. 1084
  5. 1085
  6. 1086
  7. 1087
  8. 1088
  9. 1089
  10. 1090
  11. 1091

    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
    "…It was estimated that 100 days of dust accumulation over mono-crystalline PV panels, caused the efficiency to decrease by around 10%. This limitation makes solar PV an unreliable source of power for unattended or remote devices and thus strongly suggests the challenge of cleaning the panel's surface regularly or injecting technical modifications. …"
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  12. 1092
  13. 1093
  14. 1094
  15. 1095
  16. 1096

    Experimental studies on the biodiesel production parameters optimization of sunflower and soybean oil mixture and DI engine combustion, performance, and emission analysis fueled wi... حسب Elkelawy M.

    منشور في 2019
    "…70% biodiesel) were prepared to power a single cylinder diesel engine. The engine results as compared to diesel fuel, show a reduction in the rate of change of CO by 33.8% for D50B50. …"
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  17. 1097
  18. 1098
  19. 1099
  20. 1100