“…Hydrogen adsorption/desorption behavior plays a key role in hydrogen evolution reaction (HER) catalysis. The HER reaction rate is a trade-off between hydrogen adsorption and desorption on the catalyst surface. …”
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“…Such NC/GAP/submicron-HNS fibers showed a low activation energy of 204 kJ·mol(–1) and large rate constant of 1.74 s(–1), indicating high reactivity and fast reaction rate. The result of TG-IR analysis revealed that the main decomposition products of NC/GAP/submicron-HNS were CO(2), CO, H(2)O, N(2)O, few NO, and fragments such as −CH(2)O– and −CH–, which were low-signature gases. …”
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“…Mutation with pK(a)-perturbed analogs, such as 2-aminopurine (∼3.8), 2,6-diaminopurine (∼5.6) and hypoxanthine (∼8.7) affected the overall reaction rate. Therefore, we propose that the N1 position of G23 (pK(a) ∼6.6) in NaA43 functions as a general base, while that of A22 (pK(a) ∼6.3) in NaH1 as a general acid. …”
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“…The reaction of ozone with 1-propanol in aqueous media follows a second order kinetics with a reaction rate constant of (0.64 ± 0.02) M(−1)·s(−1) at pH = 7 and 23 °C. …”
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“…It exhibited approximately three times enhancement in photocatalytic activity with a reaction rate constant of 0.2314 h(−1) when compared with that of commercial P25 (0.0827 h(−1)). …”
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“…The catalytic experiments showed the Pt@PPy-MWCNT NPs can catalyze MeAB in aquatic solution with high catalytical performance at mild conditions. The reaction rate of catalytic hydrolysis with Pt@PPy-MWCNT NPs was found to be -d[CH(3)NH(2)BH(3)]/dt = + d[H(2)]/3dt = k(obs)[Pt@PPy-MWCNT](1.19) [MeAB](0.88). …”
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“…Hydrogen–deuterium exchange mass spectrometry gave insight into the conformational flexibility of this split protein and the process of enhancing its reaction rate. We applied this reactive pair for specific labeling of a plasma membrane target in 1 min on live mammalian cells. …”
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“…Computational models predicting cell damage responses to transient temperature rises generated by exposure to lasers have implemented the damage integral ([Formula: see text]), which time integrates the chemical reaction rate constant described by Arrhenius. However, few published reports of empirical temperature histories (thermal profiles) correlated with damage outcomes at the cellular level are available to validate the breadth of applicability of the damage integral. …”
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“…Therefore, NMR isomerization kinetics, population and chemical shift analyses of binary and ternary complexes as well as reaction kinetics were performed to address the steps of the transfer hydrogenation influencing the overall reaction rate. The results of CPAs with different 3,3′-substituents show a delicate balance between the isomerization and the ternary complex formation to be rate-determining. …”
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“…The pseudo-first-order reaction rate for substituted oxazole (e.g., 4-methyl-2,5-diphenyloxazole, 1.14 × 10(6) M(−1) s(−1)) appears slightly higher than that of unsubstituted oxazole (0.94 × 10(6) M(−1) s(−1)) considering the same initial concentration of the species at 300 K, due to the electronic effect of the functional groups. …”
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“…Approximate values for the reaction rate constants have been determined and found to be equal to 1–2 × 10(4) M(−1) s(−1) for sulfate radicals, and 1–2 M(−2) s(−1) for S(2)O(8)(2−). …”
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“…Hydrophobic lipid modification of each peptide segment promotes the formation of mixed micelles, bringing the reacting peptides into close proximity and increasing the reaction rate. The approach enables the rapid synthesis of polypeptides using low concentrations of reactants without the need for thiol catalysts. …”
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“…The measured kinetics and product distributions are consistent with a kinetic model constructed using pressure- and temperature-dependent reaction rate coefficients computed from previously reported ab initio calculations. …”
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“…Scenario two explores the variability of metabolic reaction rate within the general population. Sensitivity analysis reveals that hepatic triglyceride concentration is most sensitive to the rate constant of pyruvate kinase and fructokinase. …”
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“…Kinetic studies revealed that the reaction rate was first-order in [CHO] and [2-Br] and zero-order in [CO(2)], and the activation parameters were determined: ΔH(‡) = 12.4 kcal mol(–1), ΔS(‡) = –26.1 cal mol(–1) K(–1), and ΔG(‡) = 21.6 kcal mol(–1) at 80 °C. …”
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“…RESULTS: The efficacy and safety of Buzhong Yiqi decoction combined with surgery in the treatment of rectal prolapse were evaluated in terms of efficiency, symptom score, recurrence rate, adverse reaction rate, and so on. CONCLUSIONS: Thisstudy provides reliable evidence-based support for the clinical application of Buzhong Yiqi decoction combined with surgery in the treatment of rectal prolapse. …”
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“…Redox conditions including redox pair (cysteine/cystine ratio), pH, temperature, and reaction time were examined to achieve high antibody purity and a high reaction rate. Under the optimal redox condition, >90% reduced antibody could be reoxidized to form an intact antibody on Protein A resin in an hour. …”
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“…The apparent activation energies of leaching rare earths were calculated as 14.326 kJ/mol, and the HCl leaching process can be described by a new variant of the shrinking-core model, in which both the interfacial transfer and the diffusion through the product layer influenced the reaction rate. Furthermore, a semiempirical rate equation was created to describe the leaching process of the nonoxidative roasted ore.…”
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“…Here a master curve shows that the enzyme diffusion coefficient increases in proportion to the energy release rate—the product of Michaelis-Menten reaction rate and Gibbs free energy change (ΔG)—with a highly satisfactory correlation coefficient of 0.97. …”
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“…The modeling of temperature dependence of the reaction rate reveals that the vaporization of the adsorbed water contributes to the sharp peak; the activation energy is estimated as about 1 eV, which is in agreement with the reaction of CO and H(2) to synthesize chain hydrocarbons. …”
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