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Displaying 751 - 775 of 1647

Reaction Mechanism of Chorismate Mutase Studied by the Combined Potentials of Quantum Mechanics and Molecular Mechanics

November 21, 2002
Author(s)
Y. S. Lee, S. E. Worthington, Morris Krauss, B R. Brooks
… in the quantum region to explore whether the strong ionic hydrogen bonding of the side chains to the substrate has a catalytic effect. The hydrogen bond from glu78 induces electronic effects in the … forms. In this study, the reacting complex forms a hydrogen bond to arg63 and stabilizes the region near the …

in-Adamantane, a Small Inside-Out Molecule

September 25, 2008
Author(s)
Karl K. Irikura
… in-adamantane, an adamantane isomer in which one methine hydrogen atom is inside the cage, is predicted by ab initio … frequency about 600 cm-1 higher than usual. The interior hydrogen atom has an nmr shift more typical of aromatic …

A DNS study of the impact of gravity on spherically expanding laminar premixed flames

September 25, 2023
Author(s)
Lukas Berger, Raik Hesse, Michael Hegetschweiler, Antonio Attili, Konstantin Kleinheinz, Joachim Beeckmann, Gregory T. Linteris, Heinz Pitsch
… performed. A lean methane/air flame and a series of rich hydrogen/air flames diluted with molecular nitrogen are … To assess the e ects of non-unity Lewis numbers in the hydrogen flames, an additional DNS of one hydrogen flame is conducted with unity Lewis numbers for all …

In-Situ Method for Measuring the Mechanical Properties of Nafion Thin Films during Hydration Cycles

August 15, 2015
Author(s)
Kirt A. Page, Jae W. Shin, Scott Eastman, Brandon W. Rowe, Sangcheol Kim, Ahmet Kusoglu, Kevin G. Yager, Gery R. Stafford
… in particular Nafion, are an essential component in hydrogen fuel cells, as both the proton exchange membrane and … within the catalyst layer. During normal operation of a hydrogen fuel cell the ionomer will progressively swell and … cell components to mimic the stress state of a working hydrogen fuel cell. …
Displaying 751 - 775 of 1647
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