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2241por Kovács, Ervin, Balterer, Bence, Anh Duc, Nguyen, Szarka, Györgyi, Owen, Michael C., Domján, Attila, Iván, Béla“…In this study, the results of our systematic experiments with the Grubbs G1, G2, and Hoveyda-Grubbs HG2 catalysts proved that benzotrifluoride (BTF) can replace dichloromethane (DCM) in these reactions, providing high yields and similar or even higher reaction rates in certain cases. The ROMP of norbornene resulted not only in high yields but also in polynorbornenes with a high molecular weight at low catalyst loadings. …”
Publicado 2022
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2242“…The dynamics of sex hormones were studied when the enzymatic reaction rates were followed by the Arrhenius equation. …”
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2243“…We show that an excellent agreement between the reaction rates from the self-consistent kinetic simulations using the coverage-dependent kinetic model developed in this work and the experimental ones can be achieved. …”
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2244por Kadam, Shashikant A., Sandoval, Stefania, Bastl, Zdeněk, Simkovičová, Karolína, Kvítek, Libor, Jašík, Juraj, Olszówka, Joanna Elżbieta, Valtera, Stanislav, Vaidulych, Mykhailo, Morávková, Jaroslava, Sazama, Petr, Kubička, David, Travert, Arnaud, van Bokhoven, Jeroen A., Fortunelli, Alessandro, Kleibert, Armin, Kalbáč, Martin, Vajda, Štefan“…This phenomenon was strategically used to control the abundance of these species on the catalyst surface by varying the particle size and the wt % content of the nanoparticles on the RGO support in order to control the reaction selectivity without compromising reaction rates which are otherwise extremely challenging due to the much favorable thermodynamics for complete dehydrogenation and complete combustion under oxidative conditions.…”
Publicado 2023
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2245por Kawai, Shigeki, Silveira, Orlando J., Kurki, Lauri, Yuan, Zhangyu, Nishiuchi, Tomohiko, Kodama, Takuya, Sun, Kewei, Custance, Oscar, Lado, Jose L., Kubo, Takashi, Foster, Adam S.“…The delicate balance of the reaction rates among the diradical and two stereoisomers, arising from an in-line configuration of tip and molecular unit, allows directional azulene-to-azulene and azulene-to-diradical local probe structural isomerization in a controlled manner. …”
Publicado 2023
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2246“…However, microwave energy can offer numerous benefits for performing synthesis of organic compounds including reduced pollution, increased reaction rates, yield enhancements, and cleaner chemistries. …”
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2247por Zhou, Jicheng, Xu, Wentao, You, Zhimin, Wang, Zhe, Luo, Yushang, Gao, Lingfei, Yin, Cheng, Peng, Renjie, Lan, Lixin“…The use of microwave (MW) irradiation to increase the rate of chemical reactions has attracted much attention recently in nearly all fields of chemistry due to substantial enhancements in reaction rates. However, the intrinsic nature of the effects of MW irradiation on chemical reactions remains unclear. …”
Publicado 2016
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2248por Timme, Sandra, Lehnert, Teresa, Prauße, Maria T. E., Hünniger, Kerstin, Leonhardt, Ines, Kurzai, Oliver, Figge, Marc Thilo“…First, we determine immune-reaction rates and migration parameters under healthy conditions. …”
Publicado 2018
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2249por Zhu, Cheng, Qi, Zhen, Beck, Victor A., Luneau, Mathilde, Lattimer, Judith, Chen, Wen, Worsley, Marcus A., Ye, Jianchao, Duoss, Eric B., Spadaccini, Christopher M., Friend, Cynthia M., Biener, Juergen“…Supercapacitance, pressure drop, and catalysis measurements reveal that the 3D hierarchical nature of our printed nanoporous metals markedly improves mass transport and reaction rates for both liquids and gases. Our approach can be applied to a variety of alloy systems and has the potential to revolutionize the design of (electro-)chemical plants by changing the scaling relations between volume and catalyst surface area.…”
Publicado 2018
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2250“…Parameter calibration is essential given the incomplete experimental determination of reaction rates and the goal of using models to reproduce experimental data. …”
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2251The neutron capture cross sections of 186;187;188 Os and their application to Re/Os cosmochronometerpor Fujii, Kaori“…This information is crucial for a complete understanding and modelling in terms of the Hauser-Feshbach statistical model of the capture and inelastic reaction channels, required for the evaluation of the stellar reaction rates of these isotopes. The neutron capture cross sections averaged over the thermal neutron spectrum, Maxwellian averaged cross sections, for the range of temperatures relevant for s-process nucleosynthesis have been derived from the combined information of the experimental data in the resolved and unresolved resonance regions. …”
Publicado 2009
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2252“…Both of these methods use metabolic reaction network models of metabolism operating at steady state, so that reaction rates (fluxes) and the levels of metabolic intermediates are constrained to be invariant. …”
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2253“…Remarkably, 3-D W(18)O(49) exhibited an impressive photocatalytic degradation performance towards MB with photocatalytic reaction rates of 0.00932 min(−1), which was about 3 times higher than that of 1-D W(18)O(49). …”
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2254“…The catalytic efficiency values (maximum reaction rates) were 0.89-, 0.94-, and 0.26-fold higher than that of natural EPSPS. …”
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2255por Hammerstad, Marta, Rugtveit, Anne Kristine, Dahlen, Sondov, Andersen, Hilde Kristin, Hersleth, Hans-Petter“…Mutational studies and bioinformatics analyses confirmed the importance of the conserved FAD-stacking residues on the respective reaction rates, proposing a division of FNRs into four functionally unique sequence similarity clusters likely related to the nature of this residue.…”
Publicado 2023
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2256“…However, the structural changes of the helicase RhlB induced by binding of RNase E have not been characterized and how those lead to increased reaction rates has remained unclear. We investigated the origin of this activation for RNA substrates with different topologies. …”
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2257“…The maintenance of plastic modifications relies on negligible reaction rates in basal conditions and thus depends on enzyme nonlinearity and activation properties of the activity-dependent KP cycle. …”
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2258por Vannoy, Charles H., Tavares, Anthony J., Noor, M. Omair, Uddayasankar, Uvaraj, Krull, Ulrich J.“…A MFS is able to integrate chemical and biological processes into a single platform and allows for manipulation of flow conditions to achieve, by sample transport and mixing, reaction rates that are not entirely diffusion controlled. …”
Publicado 2011
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2259por Kraut, Stefanie, Bebenroth, Dirk, Nierth, Alexander, Kobitski, Andrei Y., Nienhaus, G. Ulrich, Jäschke, Andres“…In the rate-limiting chemical step, the dienophile is furthermore activated by two weak H-bonds that contribute ∼7–8 kJ/mol to transition state stabilization, as indicated by the 25-fold slower reaction rates of deletion mutants. These H-bonds are also responsible for the tight binding of the Diels–Alder product by the ribozyme that causes product inhibition. …”
Publicado 2012
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2260“…It was found that under anaerobic conditions and low concentrations of RH and peroxides mimicking plasma conditions, peroxides served as electron donors and RH were reduced to their ferrous carboxy forms. The reaction rates were dependent on CO as well as peroxide concentrations. …”
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