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Mostrando 801 - 820 Resultados de 2,617 Para Buscar '"reaction rate"', tiempo de consulta: 0.33s Limitar resultados
  1. 801
    “…When combined with the hydration characteristics of backfill materials, the hydration reaction rate determines the growth rate of early strength of backfill, and the formation of hydration products is the reason for the early strength increase in backfill. …”
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  2. 802
    “…Kinetic studies revealed the same specific Ni mass-based reaction rate for single-atoms and clusters. The N-doped catalyst with 6 wt% of Ni showed higher selectivity in hydrogen production and did not lose activity as compared to the N-free 6 wt% Ni catalyst. …”
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  3. 803
    “…Therefore, a model of a reversible reaction is considered, for which reaction rate constants using fold changes is estimated. …”
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  4. 804
    “…Impressively, the reaction rate of the catalytic hairpin assembly (CHA) reaction on f-TDNs was much faster than that of the conventional free CHA reaction owing to the high local concentration of hairpins, spatial confinement effect and production of giant DNA networks, which significantly enhanced the fluorescence signal to achieve sensitive detection of APE1 with a limit of 3.34 × 10(−8) U μL(−1). …”
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  5. 805
  6. 806
    “…GBCMs varied by the following attributes: sensitivity for cancer detection (80–95%), intracranial gadolinium retention (1–100 molecules per 100 million administered), severe allergic-like reaction rate (1–19 per 100,000 administrations), mild allergic-like reaction rate (10–1000 per 100,000 administrations), out-of-pocket cost ($25–$100). …”
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  7. 807
    “…Combination of epitopes significantly improved the positive reaction rate. Among all combination patterns, (S14P5 + S21P2 + P104) pattern exhibited the highest positive reaction rate for all patients (92.7%), as well as for asymptomatic infections (86.7%), confirming the feasibility of P104 as supplementary antigen for serological detection. …”
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  8. 808
    por Mukherjee, Manas
    Publicado 2012
    “…Second, to calculate the reaction rate of $^{21}$Na($p,\gamma$)$^{22}$Mg the involved masses are required very accurately. …”
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  9. 809
    “…Furthermore, the thermodynamic and kinetic study of the dissociation process showed that the dissociation process obeys the second-order kinetic process, and it is nonspontaneous, entropy-decreasing, and endothermic. Meanwhile, the reaction rate was confirmed by the Boyd model, and the film diffusion and matrix diffusion were both shown to be rate-limiting steps. …”
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  10. 810
  11. 811
    “…In the (4s)(2)S(1/2) ground state of Ca(+), the reaction rate for s-trans DBB still conforms with the capture limit, while that for gauche DBB is strongly suppressed. …”
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  12. 812
    “…The stability of anthocyanins, measured by the variables reaction rate (K), half-life time (t(1/2)), and anthocyanin retention (AR), was affected significantly (p < 0.01) by temperature. …”
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  13. 813
    “…The reaction parameters (catalyst amount, T, P, residence time, flow rate) in the move from the batch process to semi-continuous flow were investigated under mild conditions to determine their influence on the reaction rate. The optimization of the residence time (840 s) and the number of cycles (4) allowed us to develop a novel protocol that halves the reaction time compared to batch production (14 min vs. 30 min) while maintaining the same product quality. …”
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  14. 814
    “…Kinetic studies indicate the continuous production of methanol at a superior reaction rate of 5.9 × 10(–2) μmol(MeOH) g(Fe)(–1) s(–1) at 180 °C and high selectivity toward methanol, with the catalytic turnover verified by transient methane isotopic measurements. …”
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  15. 815
    “…[Image: see text] We report on the three-body reaction rate of C(2)(–) with H(2) producing C(2)H(–) studied in a cryogenic 16-pole radio frequency ion trap. …”
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  16. 816
    “…CO(2) conversion into value-added products has many advantages, including facile control of the reaction rate by adjusting the applied voltage and minimal environmental pollution. …”
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  17. 817
    “…Seeking a more valuable and faster anodic reaction to form a cathode–anode integrated system with nitrate reaction can effectively accelerate the reaction rate of the cathode and anode, and improve the utilization of electrical energy. …”
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  18. 818
    “…The activation energy (Ea) was calculated from conversion using model-free methods (Flynn–Wall–Ozawa (FWO), Kissinger–Akahira–Sunose (KAS), and Friedman (FR)), as well as the Kissinger method based on the maximum reaction rate. The average Ea varied between KAS 117 and 171 kJ·mol(−1), FWO 120–170 kJ·mol(−1), and FR 115–194 kJ·mol(−1) for the five biomasses used. …”
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  19. 819
    “…Their performance has been evaluated further between two distinctive operation conditions (i.e., low versus high temperature) based on computational metrics such as reaction rate. Accordingly, the superiority of TMO‐based composite catalysts over mono‐ and bi‐metallic TMO catalysts is evident to reflect the abundant surface oxygen vacancies and enhanced FA adsorptivity of the former group. …”
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  20. 820
    “…The presence of H(2)O may influence the reaction rate, the product distribution, and the deactivation rate. …”
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