يعرض 541 - 560 نتائج من 1,833 نتيجة بحث عن '(( 50 ((nn decrease) OR (a decrease)) ) OR ((( 10 10 decrease ) OR ( a step decrease ))))*', وقت الاستعلام: 0.18s تنقيح النتائج
  1. 541
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  3. 543

    Collision/reaction cell ICP-MS with shielded torch and sector field ICP-MS for the simultaneous determination of selenium isotopes in biological matrices حسب Al-Saad, Khalid A.

    منشور في 2011
    "…The determinations of selenium isotopes in biological samples were performed using both inductively coupled plasma collision/reaction cell quadruple mass spectrometer (CRC-ICP-QMS) and inductively coupled plasma sector field mass spectrometers (SF-ICP-MS). To significantly decrease the argon-based interferences at m/z 74 (36Ar38Ar), 76 ( 38Ar38Ar, 40Ar36Ar), 78 ( 38Ar40Ar), and 80 (40Ar40Ar), the gas-flow rates of a helium and hydrogen mixture used in the collision cell were optimized to 1.0 mL/min H2 and 3.5 mL/min He. …"
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  4. 544

    Structural, wear and thermal behaviour of Cu–Al2O3–graphite hybrid metal matrix composites حسب Mittal, P.

    منشور في 2020
    "…Copper matrix composites with Al2O3–graphite reinforcement (0.5-0.5, 1.0-1.0, 1.5-1.5 and 2.0-2.0 wt%) were prepared by stir casting process. …"
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  5. 545
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  8. 548

    Biodegradable thermoplastic polyurethane composites as potential plating systems in pediatric facial fractures حسب ALANI, AYA AHMED

    منشور في 2022
    "…Due to the rapid growth of facial bone in the pediatric age group, the use of metallic plates would require a second surgical intervention to remove it. The alternative is biodegradable plating systems which are safe but not without complications, including learning curve, decreased stability, cost, and infection. …"
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  9. 549

    Curcumin a Colorimetric and Fluorimetric Cyanide Probe in Aqueous System and Living Cells حسب Hijji, Yousef

    منشور في 2019
    "…Cyanide causes a dramatic color change of the curcumin solution (acetonitrile : water 90 : 10) from bright yellow to dark orange. It causes dramatic spectral changes in the UV-vis spectrum of curcumin by the decrease in the absorption band intensity at 421 nm and a concomitant appearance of a strong band at 520 nm. …"
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  10. 550
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  13. 553

    y - Irradiation Effect On The Ferroelastic High Temperature Phase In LiKSO4 Crystals حسب Kassem, M. E. [محمد السيد قاسم]

    منشور في 1992
    "…The results show that T,; as well as Cp decrease with dose rate. However, when the dose is greater than 10 MRad, both Cp and T,; increase with increasing dose. …"
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