Showing 461 - 480 results of 1,009 for search '(( 2 d decrease ) OR ( 5 ((nm decrease) OR (((mean decrease) OR (a decrease)))) ))', query time: 0.19s Refine Results
  1. 461

    Forecast of the outbreak of COVID-19 using artificial neural network: Case study Qatar, Spain, and Italy by Shawaqfah M.

    Published 2021
    “…The model sensitivity was analyzed using the root mean square error (RMSE), the mean absolute percentage error and the regression coefficient index R2, which yielded highly accurate values of the predicted correlation for the infected and dead cases of 0.99 for the dates considered. …”
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  2. 462

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

    Published 2019
    “…Towards this direction, TiO2 nanotubes with an average size of ⁓10–15 nm (as confirmed by scanning electron microscope (SEM) and transmission electron microscope (TEM) analysis) were synthesized through a hydrothermal process and were then impregnated with DOC. …”
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  3. 463
  4. 464

    Undrained interface shear strength of fine-grained soils for near-shore marine pipelines by Eid, Hisham T.

    Published 2020
    “…The peak and residual interface shear strengths for a variety of normally consolidated soils were measured using a torsional ring shear apparatus modified to suit soil and interface testing under the undrained condition, which is usually prevalent at soil-marine pipeline interfaces. …”
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  5. 465

    Mechanical and microstructure characterization of hard nanostructured N-bearing thin coating by Cabibbo, M.

    Published 2015
    “…The main problem with steel, is that it exhibits a relatively low hardness (below 10GPa) which strongly decreases upon annealing above about 600K. …”
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  6. 466
  7. 467
  8. 468

    Dynamic Imaging of Hydrate Specific Area Evolution during Xenon Hydrate Formation by Jarrar, Zaher

    Published 2020
    “…During hydrate formation and dissociation, full 3D images are acquired at a time resolution of 45 seconds and a spatial resolution of 5.38 ?…”
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  9. 469

    Pharmacologic inhibition of hypoxia-inducible factor (HIF)-hydroxylases ameliorates allergic contact dermatitis by Manresa M.C.

    Published 2019
    “…Background When an immune cell migrates from the bloodstream to a site of chronic inflammation, it experiences a profound decrease in microenvironmental oxygen levels leading to a state of cellular hypoxia. …”
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  10. 470

    Development of pH-Controlled Aluminum-Based Polymeric Gel for Conformance Control in Sour Gas Reservoirs by Shamlooh M.

    Published 2020
    “…The results reveal that aluminum acetate, among the screened salts, has a controllable gelation time at pH conditions between 3.5 and 8.5 and is the most stable in the temperature range 25–100 °C. …”
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  11. 471

    Fabrication of Selective Sensors for Hg2+ Traces in Water Using Graphene Decorated with Metal Nanoclusters by Ayesh, Ahmad I.

    Published 2016
    “…Two batches of sensors were tested in this work: i) sensors based on graphene only, and ii) sensors based on graphene and percolating films of Au nanoclusters, each has a thickness of 5 nm. For nanocluster deposition, each graphene sample was fixed on a cryostat finger. …”
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  12. 472

    Fabrication and characterization of flexible ruthenium oxide-loaded polyaniline/poly(vinyl alcohol) nanofibers by Chamakh, M.

    Published 2020
    “…The tests revealed the decrease of electrical resistivity and activation energy with increasing RuO2 concentration for the as-prepared samples, while the annealed samples showed lower activation energy values of ~0.1 eV with increasing the concentration of RuO2. …”
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  13. 473

    Influenza prevalence and vaccine efficacy among diabetic patients in Qatar by Swapna, Thomas

    Published 2023
    “…Among the typed IVA-positive cases, 33.4% were H1N1, and 7.7% were H3N2. A significant decrease in influenza infections was reported in vaccinated DM patients (14.5%) when compared to non-vaccinated patients (18.9%) (p-value = 0.006). …”
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  14. 474

    Influenza prevalence and vaccine efficacy among diabetic patients in Qatar by Swapna, Thomas

    Published 2023
    “…Among the typed IVA-positive cases, 33.4% were H1N1, and 7.7% were H3N2. A significant decrease in influenza infections was reported in vaccinated DM patients (14.5%) when compared to non-vaccinated patients (18.9%) (p-value = 0.006). …”
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  15. 475

    Caffeine use or napping to enhance repeated sprint performance after partial sleep deprivation: Why not both? by Romdhani, Mohamed

    Published 2021
    “…Purpose: To compare the effect of a 20-minute nap opportunity (N20), a moderate dose of caffeine (CAF; 5 mg·kg-1), or a moderate dose of caffeine before N20 (CAF+N) as possible countermeasures to the decreased performance and the partial sleep deprivation-induced muscle damage. …”
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  16. 476

    Calmodulin Mutations Associated with Congenital Cardiac Disease Display Novel Biophysical and Biochemical Characteristics by Nomikos, Michail

    Published 2018
    “…In contrast, in the presence of Ca2+, there was a significant decrease in the stability of the five proteins following the order CaMWT> CaMN98I > CaMD132E > CaMQ136P > CaMD134H. …”
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  17. 477

    High temperature thermal stability of innovative nanostructured thin coatings for advanced tooling by Cabibbo, Marcello

    Published 2014
    “…Three different thin hard nitrogen-rich coatings were mechanically, microstructurally, and thermally characterized: A 2.5 micron-thick CrN-NbN, a 11.7 micron-thick TiAlN, and a 2.92 micron-thick AlTiCrxNy. …”
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  18. 478

    Functionalization of silica-coated magnetic nanoparticles as powerful demulsifier to recover oil from oil-in-water emulsion by Elmobarak W.F.

    Published 2021
    “…The Fe–Si-MNP exhibited excellent %Soil, reliable stability, and high magnetization values ranging between 46.1 and 80.2 emu/g. adding a 5 nm silica layer on the surface of the Fe–Si-MNP (i.e., Fe–Si-1) protected them from oxidation conditions, extended their service life, and achieved a %Soil of ∼96.3%. …”
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  19. 479

    Utilization of Emergency Services by Children with Asthma in Qatar by Arafah, Dima

    Published 2022
    “…Background: Asthma is a leading chronic disease in children worldwide, which if left untreated or poorly controlled, can lead to altered lung function and poor quality of life. 1 Early detection and improved control of asthma are recommended to decrease utilization of emergency services and hospitalizations. …”
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  20. 480

    Arabic gum as green agent for ZnO nanoparticles synthesis: properties, mechanism and antibacterial activity by Ba-Abbad, Muneer M.

    Published 2017
    “…The optical properties of ZnO NPs, with a band gap of 3.4 eV and enhanced intensity of blue emission, were the result of the smaller size of ZnO at the optimal amount of Arabic gum. …”
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