يعرض 1 - 20 نتائج من 366 نتيجة بحث عن '(( 59 ((a decrease) OR (_ decrease)) ) OR ((( _ pv decrease ) OR ( i x decrease ))))*', وقت الاستعلام: 0.21s تنقيح النتائج
  1. 1

    Structural and magnetic properties of Ni1-xZnxFe 2O4 (x=0, 0.5 and 1) nanopowders prepared by sol-gel method حسب Gao P.

    منشور في 2013
    "…A series of nanostructured Ni-Zn ferrites Ni1-xZn xFe2O4 (x=0, 0.5 and 1) with a grain size from 24 to 65 nm have been prepared with a sol-gel method. …"
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  2. 2

    Drastic difference between hole and electron injection through the gradient shell of Cd: XSeyZn1- xS1- y quantum dots حسب Abdellah, Mohamed

    منشور في 2017
    "…Ultrafast fluorescence spectroscopy was used to investigate the hole injection in CdxSeyZn1xS1−y gradient core–shell quantum dot (CSQD) sensitized p-type NiO photocathodes. …"
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  3. 3

    Study of Magnetic Properties and Lattice Dynamics of the Cdx Co1-x Ferrite System by MossbauerEffect حسب Eissa, N. A. [نبيل عيسى]

    منشور في 1981
    "…The magnetic properties and lattice dynamics of the spinel ferrite system Cdx Coi-x Fe^ 04 (x = 0.0, 0.1, . . . , and 1.) were studied in the temperature range between 78 to 800°K. …"
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    Mossbauer Effect Study of the Cations Distribution and its Influence on the Electric Field Gradient of the Cdx Co1-x Ferrite System حسب Eissa, N. A. [نبيل عيسى]

    منشور في 1982
    "…In the ferrite system Cd,Co,_x Fe; 04 (X=0.0, O.I, 0.2, ....... , 1.0). it was found that the introduction of Co2'1' decrease the EFG at the octahedral B-site. …"
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  7. 7

    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%. …"
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  8. 8

    Caprylamidopropyl Betaine as a Highly Efficient eco-friendly Corrosion Inhibitor for API X120 Steel in 1 M H2SO4 حسب Foudaa, Abd El Aziz S.

    منشور في 2020
    "…CORROSION inhibition of API X120 steel in a 1M sulfuric acid solution at altered temperatures was investigated utilizing a new eco-friendly surfactant (Caprylamidopropyl Betaine (CAPB)) by Gravimetric and electrochemical test (containing potentiodynamic polarization (PP), electrochemical impedance spectroscopy (EIS). …"
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  9. 9

    Effects of environmental and climatic conditions on PV efficiency in qatar حسب Touati, F.

    منشور في 2013
    "…It was estimated that 100 days of dust accumulation over Mono-crystalline PV panels, caused the efficiency to decrease by 10%. …"
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  10. 10

    Correlating the rheological and magneto-optical properties of cobalt substituted magnetite ferrofluids (CoxFe1?xFe2O4) with theoretical studies حسب Babukutty, B.

    منشور في 2023
    "…An environmental friendly method of co-precipitation is applied to generate CoxFe1?xFe2O4 with variable dopant concentration (x = 0-0.8), which is deeply investigated by structural and functional property analyses of the ferrofluids. …"
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  11. 11

    Quantification of pv power and economic losses due to soiling in Qatar حسب Zeedan A.

    منشور في 2021
    "…Soiling losses of photovoltaic (PV) panels due to dust lead to a significant decrease in solar energy yield and result in economic losses; this hence poses critical challenges to the viability of PV in smart grid systems. …"
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    EV impact on the residential distribution network with smart PV inverters حسب Abdullah, Heba

    منشور في 2020
    "…Varying the inverter to PV ratio for smart operation from (1.1) to (2) further decreases the system losses. …"
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  14. 14

    Corrosion inhibition of API X120 steel in a highly aggressive medium using stearamidopropyl dimethylamine حسب Radwan, A.Bahgat

    منشور في 2017
    "…The overall results showed that SAPDA significantly decreased the corrosion rate of API X120 steel with an inhibition efficiency of approximately 99% at an inhibitor concentration of 136 μmol L− 1. …"
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    Long-term performance analysis and power prediction of PV technology in the State of Qatar حسب Touati F.

    منشور في 2017
    "…Results show that due to panel dusting for eight months, the PV output power decreased by 50%. Also, owing to lower ambient temperatures, clearer sky and cleaner panels due to occasional rainfall, the PV panels show higher output power in Winter than in Summer season. …"
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    Integration of temperature and dust effects in siting large PV power plant in hot arid area حسب Charabi, Yassine

    منشور في 2013
    "…Recently, solar PV technologies witnessed a commercial vigor due to their tremendously decreasing prices. …"
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    The impact of PV generation and load types on the impedance relays during both balanced and unbalanced faults حسب Kamel, Rashad M.

    منشور في 2022
    "…When single line to ground fault occurs at the PV bus (far from relay location), the dynamic loads increase the relay impedance, while the PV plant decreases the relay impedance. …"
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