يعرض 921 - 940 نتائج من 990 نتيجة بحث عن '(( a mean decrease ) OR ( 5 ((((fold decrease) OR (point decrease))) OR (a decrease)) ))', وقت الاستعلام: 0.27s تنقيح النتائج
  1. 921

    Global, regional, and national stillbirths at 20 weeks' gestation or longer in 204 countries and territories, 1990–2021: findings from the Global Burden of Disease Study 2021 حسب Comfort, Haley

    منشور في 2024
    "…The estimated number of stillbirths occurring at 20 weeks' gestation or longer decreased from 5·08 million (95% UI 4·07–6·35) in 1990 to 3·04 million (2·61–3·62) in 2021, corresponding to a 39·8% (31·8–48·0) reduction, which lagged behind a global improvement in neonatal deaths of 45·6% (36·3–53·1) for the same period (down from 4·03 million [3·86–4·22] neonatal deaths in 1990). …"
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    article
  2. 922
  3. 923

    Facile Electrochemical Synthesis of Highly Efficient Copper-Cobalt Oxide Nanostructures for Oxygen Evolution Reactions حسب Nath, Narayan Chandra Deb

    منشور في 2020
    "…An optimized nanopetal structure of CuxCo3-xO4 (x = 0.95, annealed at 200 °C) shows a considerably high Faradaic efficiency (∼93%) with a remarkably low overpotential (∼230 mV) at a benchmark current density (J) of 10 mA cm-2; at the same J in an alkaline solution (1 M KOH) for OER, it also exhibits high durability (up to 100 h). …"
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  4. 924
  5. 925

    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. When a single phase to ground fault occurs at the relay bus (load bus), the dynamic load decreases the relay impedance, and the PV plant increases it. …"
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  6. 926

    Effect of the length of silicon nano-dot/wire on band gap حسب Hassan, Walid M.I.

    منشور في 2014
    "…We will report on the role of the length of silicon nanowire (SNW) in determining the band gap of a structure. We find that the band gap decreases with SNW length for the same diameter and approaches the band gap for an ideal infinitely long SNW. …"
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  7. 927

    Correlated decay of triplet excitations in the shastry-sutherland compound SrCu2 (BO3)2 حسب Zayed, M.E.

    منشور في 2014
    "…The temperature dependence of the gapped triplet excitations (triplons) in the 2D Shastry-Sutherland quantum magnet SrCu2(BO3)2 is studied by means of inelastic neutron scattering. The excitation amplitude rapidly decreases as a function of temperature, while the integrated spectral weight can be explained by an isolated dimer model up to 10 K. …"
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  8. 928

    Emerging clay-aryl-gold nanohybrids for efficient electrocatalytic proton reduction حسب Jlassi, Khouloud

    منشور في 2018
    "…Both nanohybrids showed efficient electrochemical activity for HER in acidic condition (0.1 M H2SO4) with high current density up to −25 mA.cm−2 at −1 V and 0.148 mV onset. Negligible decreasing in current density and slight shift in onset was observed after 1000 cycles. …"
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  9. 929

    Experimental determination and computational fluid dynamics predictions of pressure loss in close-coupled elbows (RP-1682) حسب Salehi, Mohammad

    منشور في 2017
    "…The results of this study showed that the loss coefficient increased as a function of separation distance between the elbows in a Z-configuration and decreased in a U-configuration. …"
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  10. 930
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  12. 932
  13. 933

    Smart City and Preservation of Identity in Doha حسب Altiok, Huzeyfe

    منشور في 2021
    "…The limited population of Qatar and the significant wealth of natural gas provide them the means to establish a smart city. The main catch phrase for Qataris on that development project is "modernization with protecting the heritage." …"
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  14. 934
  15. 935

    Electrochemical oxidation of ammonia (NH4+/NH3) ON synthesized nickel-cobalt oxide catalyst حسب Almomani F.

    منشور في 2021
    "…The reported Pgen were 0.55, 0.85, 1.1 and 0.0.93 mW/cm2 for Ni–C, Co10/Ni–C, Co20/Ni–C and Co40/Ni–C. A concentration of Co higher than 40% decreased cell potential (Vcell) and reduced the percentage removal of ammonia (%REAmm). …"
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  16. 936
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  18. 938
  19. 939

    Simulation and experimental study of underwater dissimilar friction-stir welding between aluminium and steel حسب Eyvazian, Arameh

    منشور في 2020
    "…Theeffects of processing parameters on the formation of intermetallic compounds (IMCs) atthe Al/St interface, microstructural characteristics, and mechanical property of dissimilarweldments were studied and addressed. By decreasing tool rotational speed (w), increas-ing traverse velocity (v), and employing cooling medium, peak temperature continuouslyreduced (down to ?…"
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  20. 940

    Experimental and Theoretical Investigation on Bond Behavior of Tensile Lap Spliced Basalt Fiber Reinforced Polymer Bars in High Strength Concrete Beams حسب Eltantawi, Islam Reda Mohamed

    منشور في 2020
    "…Moreover, the bond strength decreases as the splice length increases. Additionally, the sand-coated bars showed a higher bond strength than the helically wrapped bars.…"
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