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Mostrando 221 - 240 Resultados de 2,617 Para Buscar '"reaction rate"', tiempo de consulta: 0.31s Limitar resultados
  1. 221
    “…The same signal controlled system was then used to tune the reaction rate of aniline catalyzed hydrazone formation. …”
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  2. 222
    “…All AgNPs were then synthesized to determine the optimum precursor (AgNO(3)) concentration and reaction rate. The results indicated 5 mM AgNO(3) as the optimum precursor concentration; furthermore, AgNPs-blue LED had the highest reaction rate. …”
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  3. 223
    “…At the mole ratio of 4, the reaction rate was strongly dependent on the reaction temperature, where SiO(2) was completely reduced after 20 min at 1273 K. …”
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  4. 224
    “…The service life is related to the reaction mechanism function G(α) and the reaction rate parameter k(t). The reaction mechanism function G(α) = ((1 − α)(−3.3) − 1)/3.3 and the reaction rate parameter k(t) = 2.14 × 10(12)exp(E/RT) were obtained by fitting the thermal weight loss data of stranded carbon fiber composite cores. …”
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  5. 225
    por Iliadis, Christian
    Publicado 2007
    “…It also presents the nuclear reaction and structure theory, thermonuclear reaction rate formalism and stellar nucleosynthesis. …”
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  6. 226
    por Wong, Jonathan, Yeung, Ying-Yeung
    Publicado 2021
    “…N-Bromoimide reagents are commonly used in these reactions but catalysts and chlorinated solvents are often employed to achieve a reasonable reaction rate. In this report, we present a solvent and catalyst-free bromofunctionalization of olefins using mechanical force.…”
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  7. 227
    “…The findings from the kinetics investigations suggest that the rate of the photohydrolysis reaction is directly proportional to the amount of catalyst in the reaction system, adhering to a first-order reaction rate. Furthermore, it was observed that the reaction rate remains unaffected by the concentration of AB, thereby suggesting a reaction of zero order. …”
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  8. 228
    “…Under the optimal conditions, the initial reaction rate, the maximum yield and the product e.e. were 17.3 µmol/h g(cell), 95.2% and >99.9%, respectively, which are much better than the corresponding results previously reported. …”
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  9. 229
    “…In the present work, magnesium chloride was newly added to the injecting solutions to delay the reaction rate and to enhance the amount of carbonate precipitation. …”
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  10. 230
    “…The MO decolourization efficiency increased from 0 to 94.90 ± 0.01% and correspondingly the reaction rate constant increased from 0 to 0.503 ± 0.001 h(−1) with the decrease in cathodic electrode potential from −0.2 to −0.8 V vs Ag/AgCl. …”
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  11. 231
    por Kotlarek, Daria, Worch, Remigiusz
    Publicado 2016
    “…Using nanomolar ssDNA in the regime of enzyme excess, we estimated the maximum reaction rate at 0.81± 0.38 and 1.38± 0.34 nM/min for Mg(2+) and Mn(2+), respectively. …”
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  12. 232
    “…Also, the structural effect of the N–H heterocyclic compound was investigated on the reaction rate. The result showed that reaction rate increases in the presence of isatin (N–H compound) that participates in the second step (step(2)), compared to saccharin (another N–H compound). …”
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  13. 233
    “…Similarly, a high acrosome reaction rate, identified via FITC‐PNA staining of human sperm samples, was found in the Maca extract‐containing HTF compared with that in the control medium. …”
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  14. 234
    “…The integral method was beneficial for obtaining the average activation energy of each stage, and the differential method was suitable for gaining the nth-order reaction rate equation and the pre-exponential factor before the operating temperature became lower than 635.968 °C. …”
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  15. 235
  16. 236
    por Han, Pingping, Zhou, Xigui, You, Chun
    Publicado 2020
    “…Compared to reaction system containing all the individual immobilized enzymes, the reaction system containing the co-immobilized enzymes exhibit ∼3.5 fold of reaction rate on producing inositol from starch. This reaction rate is comparable to that by free enzyme mixture. …”
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  17. 237
    “…The results showed that as the degree of unsaturation increased, the acrylate grafting number and the cross-linking density increased, although the acrylation (grafting reaction) rate decreased. The reason was mainly because increasing the double bond content could accelerate the reaction rate, while the grafted acrylic groups had a steric hindrance effect to prevent the adjacent double bonds from participating in the reaction. …”
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  18. 238
    “…[Image: see text] The atmospheric reaction of H(2)S with Cl has been reinvestigated to check if, as previously suggested, only explicit dynamical computations can lead to an accurate evaluation of the reaction rate because of strong recrossing effects and the breakdown of the variational extension of transition state theory. …”
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  19. 239
    “…To analyze various potential reaction mechanisms and to predict the reaction rate constants quantum chemistry and transition state theory were employed. …”
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  20. 240
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