يعرض 21 - 40 نتائج من 499 نتيجة بحث عن '(( 50 ((mean decrease) OR (a decrease)) ) OR ((( a step decrease ) OR ( 2 wt decrease ))))*', وقت الاستعلام: 0.21s تنقيح النتائج
  1. 21

    Role of TiO2 and carbon nanotubes on polyethylene, and effect of accelerated weathering on photo oxidation and mechanical properties حسب Zagho M.M.

    منشور في 2019
    "…Addition of CNTs had negligible effect on the tensile strength but it kept the same approximate value of the original before the accelerated weathering (e.g., 23.2 MPa for 1 wt% of CNTs). CNTs also protected the samples even with the presence of TONPs because of the absorbance and antioxidants effects. …"
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  2. 22
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    Qatar Culture Collection of Microalgae: A Sustainable Source for Biodiesel Production and Omega Fatty Acid Compounds حسب Bounnit, Touria

    منشور في 2016
    "…A one step transesterification process was used to derivitize the intrinsic lipid into fatty acid methyl esters and the individual components were identified against known standards. …"
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  5. 25

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

    منشور في 2021
    "…Electrospinning technique was employed to fabricate composite nanofibers/nanoparticles of sulfonated polyether ether ketone, polyvinylpyrrolidone, and ruthenium oxide (sPEEK/PVP/RuO2). 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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  6. 26

    Biodegradable polysaccharide grafted polyacrylamide inhibitor for corrosion in CO2- saturated saline solution حسب Jalab, Rem

    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. …"
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  7. 27

    Genotoxic impact of long-term cigarette and waterpipe smoking on DNA damage and oxidative stress in healthy subjects حسب Alsaad A.M.

    منشور في 2019
    "…This was associated with a marked decrease (50%) in the expression of detoxifying genes (NQO1 and GSTA1) with an increase in CYP1A1 mRNA expression, a cancer-activating gene. …"
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  8. 28

    Box-Behnken approach for optimization of Cr(III) removal from a real tanning effluent using powdered marble حسب Boujelben, R.

    منشور في 2022
    "…Microtoxicity (Escherichia coli) assays showed a decrease in the growth inhibition percentage going from 100 to 31% following the adsorption experiment using raw tanning effluent. …"
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  9. 29

    Effect of concentration of DOC loaded TiO 2 nanotubes on the corrosion behavior of smart coatings حسب Ubaid F.

    منشور في 2019
    "…Various contents of the encapsulated TiO2 nanotubes (1, 3 and 5 wt%) were thoroughly dispersed into the epoxy matrix and the resulting composites were then applied on a cleaned steel substrate using doctor blade technique to develop smart coatings. …"
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  10. 30

    Tailoring electrocatalytic properties of Pt nanoparticles grown on Ti3C2Tx MXene surface حسب Filip, Jaroslav

    منشور في 2019
    "…Composites containing 14 wt% Pt showed HER with an onset potential of −75.9 mV and a current density of −10 mA cm−2 achieved at −226 mV. …"
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    Structural, wear and thermal behaviour of Cu–Al2O3–graphite hybrid metal matrix composites حسب Mittal, P.

    منشور في 2020
    "…The aim of the present study is to investigate the structural, wear and thermal behaviour of Cu–Al2O3–graphite hybrid metal matrix composites. 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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  13. 33

    Phase, microstructure and tensile strength of Al–Al2O3–C hybrid metal matrix composites حسب Ahamad, N.

    منشور في 2020
    "…Aluminium matrix reinforced with Al2O3–carbon (2.5, 5, 7.5 and 10 wt.%) in equal proportion was prepared by stir casting. …"
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    Correlation of structural and mechanical properties for Al-Al2O3-SiC hybrid metal matrix composites حسب Ahamad, Naseem

    منشور في 2021
    "…Hardness of hybrid composites increases upto 5 wt.% variation of ceramic reinforcements i.e. Al2O3-SiC after that it decreases. …"
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    Synthesis and characterization of stir casted Cu-ZrO2-Graphite hybrid metal matrix composites for thermal management structures حسب Mittal, Prateek

    منشور في 2022
    "…The compressive strength of composite sample containing 2.0 wt. % ZrO2 and graphite was found to be 674.57 MPa which was around 1.25% higher than the composite sample containing 0.5 wt. % reinforcements. …"
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  18. 38

    Fabrication of fouling resistant Ti3C2Tx (MXene)/cellulose acetate nanocomposite membrane for forward osmosis application حسب Alfahel, Radwan

    منشور في 2020
    "…It was found that the cross-linked cellulose acetate membrane with 8 wt% MXene (CCAM-8%) showed higher resistance to fouling when compared with commercial thin-film composite (TFC) FO membrane, the water flux of CCAM-8% decreased by only 10.7% using TSE as FS compared to DW, where the water flux of the TFC commercial membrane decreased by 32.2% when using TSE as FS compared to DW.…"
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  19. 39

    Fabrication of Fouling Resistant Ti3C2Tx(MXene) Cellulose Acetate Nanocomposite Membrane for Forward Osmosis Application حسب Alfahel, Radwan Ahmad Firas

    منشور في 2020
    "…It was observed that the cross-linked cellulose acetate membrane with 8 wt% MXene (CCAM-8%) showed higher resistance to fouling when compared with commercial thin-filmcomposite (TFC) FO membrane, the water flux of CCAM-8% decreased by only 10.7% using TSE as FS compared to DI, where the water flux of the TFC commercial membrane decreased by 32.2% when using TSE as FS compared to DI.…"
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  20. 40

    Accelerated weathering effects on poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and PHBV/TiO2 nanocomposites حسب Antunes, A.

    منشور في 2020
    "…It also slowed down the decrease in mechanical properties. The mechanical properties were shown to gradually decrease for the PHBV/TiO2 nanocomposites, whereas a sharp drop was observed for the neat PHBV after an accelerated weathering exposure. …"
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