يعرض 821 - 840 نتائج من 1,368 نتيجة بحث عن '(( 10 i decrease ) OR ( 5 ((((step decrease) OR (we decrease))) OR (mean decrease)) ))', وقت الاستعلام: 0.18s تنقيح النتائج
  1. 821
  2. 822

    The Optical and Electrical Properties of Low Density Polyethylene Films in CuSo4 Solution حسب Al Naimi, Sabah M. [صباح النعيمي]

    منشور في 2005
    "…The results of this study show that: (1) Direct and indirect optical transitions exist, (2) Direct and indirect energy gaps increase as the exposure time increases, (3) The Urbach energy band tail decreases as time increases, (4) The d.c. conductivity decreases, while the dielectric constant increases as time increases. …"
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  3. 823
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  5. 825
  6. 826
  7. 827
  8. 828
  9. 829
  10. 830

    Prevention of gallium arsenide photocorrosion by an epoxy adhesion layer حسب Alqaradawi, Siham Y.

    منشور في 2004
    "…The room temperature electrical conductivity of the epoxy films increased from 10−8 to 10−4Ω−1cm−1 due to gold impregnation. Enhancement of the photocurrent due to gold impregnation is attributed due to better conduction of the photogenerated holes into the electrolyte, also due to activating the adsorption of electrolyte ions.Several parameters are studied with the objective of determining the stability of epoxy films: these are continuous current–voltage (I–E) scans, prolonged illumination, weight changes and surface topography by scanning electron microscopy. …"
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  11. 831
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  13. 833
  14. 834
  15. 835

    Tailoring the defects of sub-100 nm multipodal titanium nitride/oxynitride nanotubes for efficient water splitting performance حسب Eid, Kamel

    منشور في 2021
    "…XPS, XPS imaging, Auger electron spectra, and positron annihilation spectroscopy disclosed that the high nitridation rate induced the generation of a mixture of Ti-nitride and oxynitride with various vacancy-type defects, including monovacancies, vacancy clusters, and a few voids inside TiOxNTs. These defects decreased the bandgap energy to 2.4 eV, increased visible-light response, and enhanced the incident photon-to-current collection efficiency (IPCE) and the photocurrent density of TiONxNTs by nearly 8 times compared with TiO2NTs, besides a quick carrier diffusion at the nanotube/electrolyte interface. …"
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  16. 836
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  20. 840