يعرض 641 - 660 نتائج من 1,290 نتيجة بحث عن '(( 10 i decrease ) OR ( 50 ((((ng decrease) OR (mean decrease))) OR (nn decrease)) ))', وقت الاستعلام: 0.15s تنقيح النتائج
  1. 641

    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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  2. 642
  3. 643

    Spatial, temporal, and demographic patterns in prevalence of chewing tobacco use in 204 countries and territories, 1990-2019: A systematic analysis from the Global Burden of Diseas... حسب Kendrick, Parkes J

    منشور في 2021
    "…Prevalence among young people aged 15–19 years was over 10% in seven locations in 2019. Although global age-standardised prevalence of smoking tobacco use decreased significantly between 1990 and 2019 (annualised rate of change: –1·21% [–1·26 to –1·16]), similar progress was not observed for chewing tobacco (0·46% [0·13 to 0·79]). …"
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  4. 644
  5. 645
  6. 646
  7. 647

    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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  8. 648
  9. 649
  10. 650
  11. 651
  12. 652
  13. 653
  14. 654
  15. 655
  16. 656
  17. 657

    Morphology, Nucleation, and Isothermal Crystallization Kinetics of Poly(ε-caprolactone) Mixed with a Polycarbonate/MWCNTs Masterbatch حسب Gumede, Thandi P.

    منشور في 2017
    "…The nanocomposites contained 0.5, 1.0, 2.0, and 4.0 wt % MWCNTs. Even though PCL and PC have been reported to be miscible, our DSC (Differential Scanning Calorimetry), SAXS (Small Angle X-ray Scattering), and WAXS (Wide Angle X-ray Scattering) results showed partial miscibility, where two phases were formed (PC-rich and PCL-rich phases). …"
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  18. 658
  19. 659
  20. 660