يعرض 41 - 60 نتائج من 228 نتيجة بحث عن '(( 50 ((ng decrease) OR (mean decrease)) ) OR ((( 5 wt decrease ) OR ( 50 c decrease ))))', وقت الاستعلام: 0.17s تنقيح النتائج
  1. 41

    Conversion of Organic Municipal Wastes into Biochars and their Effect on Fertility Parameters of Normal and Sabkha Soils of Qatar حسب Ahmedna, Mohamed

    منشور في 2016
    "…To each pot, sufficient amount of 0.25-mm sieved biochar was mixed with soil to yield carbon to soil ratios of 0, 1, and 2% (wt/wt). Box-Behnken experimental design was used instead of the full factorial to decrease the number of treatments to a manageable level (126 treatments) with three replications at the center. …"
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  2. 42

    Production and investigation of flexible nanofibers of sPEEK/PVP loaded with RuO2 nanoparticles حسب Chamakh, Mariem

    منشور في 2021
    "…The samples were synthesized with different concentrations of hydrous ruthenium chloride of 2 wt%, 5 wt%, and 10 wt%, and then annealed at a temperature of 300 �C for 4 h to form the ruthenium oxide nanoparticles. …"
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  3. 43

    Influence of nitrogen doping on the electrocatalytic activity of Ni-incorporated carbon nanofibers toward urea oxidation حسب Barakat, Nasser A.M.

    منشور في 2017
    "…However, the electrochemical measurements indicated that the content of the urea in the initial electrospun solution should be optimized as the results showed that the best nickel surface activation as well as the maximum observed current density can be achieved when the urea content is kept at 5 wt%. Typically, the observed current densities using 1.0 M urea (in 1 M KOH) were 3.15, 29.7, 13.75, 47.55, 14.13 and 9.85 mA/cm2 for the nanofibers obtained from electrospun solutions having 0, 1, 2, 5, 7 and 9 wt% urea, respectively. …"
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  4. 44

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

    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%. …"
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  5. 45

    Date palm wood flour/glass fibre reinforced hybrid composites of recycled polypropylene: Mechanical and thermal properties حسب AlMaadeed, Mariam A.

    منشور في 2012
    "…Morphological studies indicated that glass fiber has good adhesion with recycled PP supporting the improvement of the mechanical properties of hybrid composites with glass fiber addition. Addition of as little 5wt% glass fibre to wood flour reinforced RPP increases the tensile strength by about 18% relative to the wood flour reinforcement alone. …"
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  6. 46

    Deoxygenation of pyrolysis vapour derived from durian shell using catalysts prepared from industrial wastes rich in Ca, Fe, Si and Al حسب Tan, Y.L.

    منشور في 2020
    "…The catalytic performance of AS-EAF at different temperatures (400–600 °C) and AS-EAF/durian shell ratios (1:30, 2:30, 3:30) was investigated. …"
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  7. 47

    Optimization of performance and emission characteristics of CI engine fueled with Jatropha biodiesel produced using a heterogeneous catalyst (CaO) حسب Singh, A.

    منشور في 2020
    "…The heterogeneous transesterification delivered a yield of 81.6% at 5 wt% catalyst concentration and 12:1 methanol to oil molar ratio. …"
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  8. 48
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  10. 50

    Synthesis and characterisation of Co2+-incorporated ZnO nanoparticles prepared through a sol-gel method حسب Ba-Abbad, Muneer M.

    منشور في 2016
    "…The band gap of the Co2+-doped ZnO samples decreased from 3.19 to 2.66 eV as the content of dopant Co2+ increased from 0.0 to 1.0 wt.%. …"
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  11. 51
  12. 52

    Effects of superelastic nano-NiTi additions on electroless Ni –P coating properties under bending حسب MacLean M.

    منشور في 2019
    "…In this study, electroless Ni –P-nano-NiTi composite coatings containing 5.14 wt%, 6.07 wt%, and 7.02 wt % NiTi were subjected to three-point bend testing in order to determine bending properties. …"
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  13. 53

    Morphology, nucleation, and isothermal crystallization kinetics of poly(butylene succinate) mixed with a polycarbonate/MWCNTs masterbatch حسب Gumede, Thandi P.

    منشور في 2018
    "…Isothermal crystallization results indicated that with 0.5 wt% MWCNTs the crystallization rate was accelerated, but further increases in MWCNTs loading (and also in PC content) resulted in progressive decreases in crystallization rate. …"
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  14. 54

    Prospects Of Amino Acids And Ionic Liquids As Natural Gas Hydrate Inhibitors For Offshore Flow Assurance حسب Qureshi, M. Fahed Aziz

    منشور في 2018
    "…This work is beneficial for the industry and academic researchers as the required dosage of hydrate inhibitors has been reduced from 40 wt% to 5 wt%, which helps to reduce the overall CAPEX cost and reduce environmental concerns related to the disposal of the hydrate inhibitors. …"
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  15. 55
  16. 56

    Assessment of climate change pattern in the Pauri Garhwal of the Western Himalayan Region: based on climate parameters and perceptions of forest-dependent communities حسب Jha, Shashidhar Kumar

    منشور في 2020
    "…Percentage cloud cover showed an increase, of approximately 3%, while diurnal temperature displayed decreasing trends. Rainfall in the district showed a decreasing trend, with more than 50% of years 1985–2015 receiving less rainfall than the annual average. …"
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  17. 57
  18. 58

    Synthesis and properties of HA/ZnO/CNT nanocomposite حسب Ding M.

    منشور في 2018
    "…The goal of this study was to examine the tribomechanical properties of hydroxyapatite (HA)/ZnO and HA/ZnO/CNT composite ceramics (carbon nanotubes; with different ratios 0.5 wt%, 1.0 wt%, and 1.5 wt%). The composites were synthesized using the hydrothermal method in an autoclave. …"
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  19. 59
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