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يعرض 81 - 100 نتائج من 271 نتيجة بحث عن '(((( 50 ppm decrease ) OR ((( 5 nm decrease ) OR ( 5 wt decrease ))))) OR ( 50 a decrease ))', وقت الاستعلام: 0.14s تنقيح النتائج
  1. 81
  2. 82

    Nonlinear effects in locally resonant nanostrip phononic metasurface at GHz frequencies حسب Feng Gao (3548)

    منشور في 2021
    "…Each of the nanostrips is 250 nm wide and is made of a 680-nm-thick SiO<sub>2</sub> layer stacking on 50-nm Al metal electrodes. …"
  3. 83

    Excess pCO2 and carbonate system geochemistry in surface seawater of the exclusive economic zone of Qatar (Arabian Gulf) حسب Connor, Izumi

    منشور في 2022
    "…The pCO2 in surface seawater averaged 458 ± 62 which was higher than the atmospheric value of 412 ppm. Hence, the Gulf was a source of CO2 to the atmosphere. pCO2 in seawater is controlled by TA relative to DIC as well as temperature and salinity. …"
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    article
  4. 84

    Corrosion Inhibition of Mild Steel using Potato Peel Extract in 2M HCl Solution حسب Ibrahim, Taleb

    منشور في 2011
    "…The results showed increase in the inhibition efficiency with increasing potato peels extract concentration. A reasonable corrosion inhibition level was obtained at a concentration of 50 ppm (>70% inhibition efficiency). …"
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  5. 85
  6. 86

    The Photocatalytic Degradation of 2,3,7,8-Tetrachlorodibenzo-p-Dioxin in the Presence of Silver–Titanium Based Catalysts حسب Samara, Fatin

    منشور في 2020
    "…Both catalysts were found to effectively decompose TCDD at 302 nm (lower energy) reaching in between 98–99% degradation after five hours, but AgTiY showed better performance than AgTi at 60 min reaching 91% removal. …"
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  7. 87

    Nanospace engineering of KOH activated car حسب Romanos, J.

    منشور في 2011
    "…High specific surface areas, porosities, sub-nanometer (<1 nm) and supra-nanometer (1–5 nm) pore volumes are quantitatively controlled by a combination of KOH concentration and activation temperature. …"
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  8. 88

    Recyclable polyaspartate-coated magnetic nanoparticles for sustainable control of calcite and barite scales in oilfield operations حسب Abdelrahman T. Abdelaal (14674629)

    منشور في 2026
    "…Dynamic tube-blocking tests at 100 °C and 1000 psi further confirm effective scaling suppression for 60 min at 50 ppm, demonstrating that immobilization of PASP on a magnetic carrier preserves its intrinsic inhibitory function while enabling recyclable deployment not achievable with free PASP. …"
  9. 89

    Oxidative stress cytotoxicity induced by platinum-doped magnesia nanoparticles in cancer cells حسب Mohamed Qasim, Al-Fahdawi

    منشور في 2021
    "…Pt/MgO nanoparticles were cuboid and in the nanosize range of 30–50 nm. The cytotoxicity of Pt/MgO nanoparticles was determined via the 3-(4,5-dimethylthiazol-2-yl)−2,5-diphenyltetrazolium bromide assay on the human lung and colonic cancer cells (A549 and HT29 respectively) and normal human lung and colonic fibroblasts cells (MRC-5 and CCD-18Co repectively). …"
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  10. 90

    Combined effects of treated domestic wastewater, fly ash, and calcium nitrite toward concrete sustainability حسب Abdelrahman Abushanab (17268940)

    منشور في 2021
    "…Test results revealed that TWW slightly decreased concrete compressive and flexural strengths by 5%–12%, whereas it dramatically increased the porosity and chloride permeability by about 40%. …"
  11. 91

    Biodegradable polysaccharide grafted polyacrylamide inhibitor for corrosion in CO<sub>2</sub>- saturated saline solution حسب Rem Jalab (11715205)

    منشور في 2023
    "…Lastly, potentiostatic testing of steel with AGGPAM at an applied potential of 50 mV illustrated surface protection and decreased current over a prolonged time. …"
  12. 92

    Synthesis of lithium manganese oxide nanocomposites using microwave‐assisted chemical precipitation technique and their performance evaluation in lithium‐ion batteries حسب Hanan Abdurehman Tariq (14778361)

    منشور في 2023
    "…The LMO-CNTs and LMO-GNPs have an excellent rate capability of 124 and 127 mAhg<sup>−1</sup> at 0.1C, sustained at 115.6 and 118.5 mAhg<sup>−1</sup> at 10C, respectively. Cycling efficiency is also improved, with LMO-CNTs and LMO-GNPs having an initial capacity of 124 and 127 mAhg<sup>−1</sup> decreasing to 112 and 114 mAhg<sup>−1</sup>, respectively, after 50 cycles. …"
  13. 93

    Oxidative stress cytotoxicity induced by platinum-doped magnesia nanoparticles in cancer cells حسب Mohamed Qasim Al-Fahdawi (17844209)

    منشور في 2021
    "…Pt/MgO nanoparticles were cuboid and in the nanosize range of 30–50 nm. The cytotoxicity of Pt/MgO nanoparticles was determined via the 3-(4,5-dimethylthiazol-2-yl)−2,5-diphenyltetrazolium bromide assay on the human lung and colonic cancer cells (A549 and HT29 respectively) and normal human lung and colonic fibroblasts cells (MRC-5 and CCD-18Co repectively). …"
  14. 94

    Daucus carota pentane/diethyl ether fraction inhibits motility and reduces invasion of cancer cells حسب Zgheib, Perla

    منشور في 2015
    "…Additionally, the DC fraction caused a decrease in the activation of the ρ-GTPases Rac and CDC42, a finding that may partially explain the treatment-induced decrease in cell motility. …"
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  15. 95

    Screening the growth inhibition mechanism of sulfate reducing bacteria by chitosan/lignosulfonate nanocomposite (CS@LS) in seawater media حسب Kashif Rasool (2542492)

    منشور في 2021
    "…As the nanocomposite concentration was increased from 50 to 500 µg/mL, the specific sulfate reduction rate (SSRR) decreased from 0.278 to 0.036 g-sulfate/g-VSS*day showing a relative sulfate reduction inhibition of 86.64% as compared to that of control. …"
  16. 96

    Improved properties and salt rejection of polysulfone membrane by incorporation of hydrophilic cobalt-doped ZnO nanoparticles حسب Muneer M. Ba-Abbad (14151660)

    منشور في 2024
    "…The hybrid PSf membranes were fabricated with 0.5 wt. % of ZnO and doped ZnO NPs. These membranes were characterized using XRD, TGA, FESEM-EDX, and salt rejection performance. …"
  17. 97
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  20. 100

    Enhanced thermoelectric properties of Bi<sub>2</sub>Te<sub>2.55</sub>Se<sub>0.45</sub> nanocomposites using eco-friendly Eocene Midra Shale palygorskite nanofillers: A sustainable... حسب Farah M. El-Makaty (14157090)

    منشور في 2025
    "…The EMS was obtained from one of Qatar’s substantial hydrocarbon reservoirs and mixed with the Bi2Te2.55Se0.45 alloy using ball-milling and hot-pressing techniques. Different wt% of EMS (0.025, 0.05, 0.1, 0.5, and 1) were considered. …"