يعرض 801 - 820 نتائج من 1,784 نتيجة بحث عن '(( 25 c decrease ) OR ( 10 ((steel decrease) OR (((nn decrease) OR (a decrease)))) ))*', وقت الاستعلام: 0.18s تنقيح النتائج
  1. 801
  2. 802

    Microbially induced calcite precipitation in calcareous soils by endogenous Bacillus cereus, at high pH and harsh weather حسب Oualha, Meriam

    منشور في 2020
    "…Their optimal potentials was at wide ranges of temperature from 30 °C to 42 °C and pH from 7.0 to 8.0. Using Qatari bacteria in liquid cultures and at syringe level at laboratory conditions, as well as in plots at field conditions, 16% CaCO3 increase in minerals formation was obtained, leading to 7% increase of soils stability. …"
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  3. 803

    Effect of reinforcement concentration on the properties of hot extruded Al-Al2O3 composites synthesized through microwave sintering process حسب Reddya, M. Penchal

    منشور في 2017
    "…Results showed that, as the content of hard ceramic particles increases, it improves overall mechanical properties including microhardness, 0.2% yield strength, ultimate compression/tensile strength, and Young's modulus while the ductility and co-efficient of thermal expansion decreases. XRD patterns and SEM/EDS mapping images show a uniform distribution of Al2O3 particles in the Al matrix. …"
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  4. 804
  5. 805
  6. 806
  7. 807
  8. 808

    The spectral and morphological studies of the conductive polyaniline thin film derivatives by the in situ copolymerization حسب Waware, Umesh S.

    منشور في 2017
    "…The blue shift in the band indicates that there is a decrease in the extent of conjugation system along the copolymer. …"
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  9. 809
  10. 810
  11. 811

    Physico-mechanical Properties of Sustainable Building Material Based Gypsum and Recycled Polyethylene Waste حسب Amina, Djoudi

    منشور في 2023
    "…Results proved the positive effect of the introducing of PET particles in the matrix of gypsum mortar, the lightening of this material but a decrease of mechanical properties was recorded comparing in to reference without polyethylene particles. …"
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  12. 812

    Changes in air quality during the first-level response to the COVID-19 pandemic in Shanghai Municipality, China حسب Bai, Yang

    منشور في 2020
    "…The results showed that air quality improved significantly During-FLR compared with Pre-FLR, with the concentrations of PM2.5, PM10, SO2, NO2, and CO all decreasing significantly. …"
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  13. 813

    Utilization of Two Microalgae Species, Synechococcus sp. and Cheatoceros sp., for Aquatic Toxicity Assessments in the Qatari Marine Environmen حسب Bacha, Sarah

    منشور في 2016
    "…The cultures were maintained at 22 ± 1.0°C, under a 14 h:10 h/light:dark cycle provided by cool white fluorescence light (7000 ± 10% lux), in nutrient-enriched synthetic seawater (F/2 medium) at pH 8.0 ± 0.5 and salinity 40 g/L. …"
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  14. 814
  15. 815
  16. 816
  17. 817
  18. 818
  19. 819
  20. 820