Results 41 to 50 of about 202,648 (320)

Superprotonic phase transition of CsHSO4: A molecular dynamics simulation study [PDF]

open access: yes, 2005
The superprotonic phase transition (phase II --> phase I; 414 K) of cesium hydrogen sulfate, CsHSO4, was simulated using molecular dynamics with the "first principles" MSXX force field (FF).
Chisholm, Calum R. I.   +3 more
core   +1 more source

Crystal structure of a new phenyl(morpholino)methanethione derivative: 4-[(morpholin-4-yl)carbothioyl]benzoic acid

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2020
4-[(Morpholin-4-yl)carbothioyl]benzoic acid, C12H13NO3S, a novel phenyl(morpholino)methanethione derivative, crystallizes in the monoclinic space group P21/n.
Finagnon Hyacinthe Agnimonhan   +6 more
doaj   +1 more source

An Ab Initio RRKM-Based Master Equation Study for Kinetics of OH-Initiated Oxidation of 2-Methyltetrahydrofuran and Its Implications in Kinetic Modeling

open access: yesEnergies, 2023
Cyclic ethers (CEs) can be promising future biofuel candidates. Most CEs possess physico-chemical and combustion indicators comparable to conventional fuels, making them suitable for internal combustion engines. This work computationally investigates the
Tam V.-T. Mai   +7 more
doaj   +1 more source

Energy considerations show that low-barrier hydrogen bonds do not offer a catalytic advantage over ordinary hydrogen bonds [PDF]

open access: yesProceedings of the National Academy of Sciences, 1996
Low-barrier hydrogen bonds have recently been proposed as a major factor in enzyme catalysis. Here we evaluate the feasibility of transition state (TS) stabilization by low-barrier hydrogen bonds in enzymes. Our analysis focuses on the facts that ( i ) a low-barrier hydrogen bond is less stable than a regular ...
A, Warshel, A, Papazyan
openaire   +2 more sources

Quantum Nuclear Dynamics of Protons within Layered Hydroxides at High Pressure

open access: yesScientific Reports, 2017
Studies of the structure of hydroxides under pressure using neutron diffraction reveal that the high concentration of hydrogen is distributed in a disordered network.
Romain Dupuis   +4 more
doaj   +1 more source

Predicting Skin Permeability by means of Computational Approaches : Reliability and Caveats in Pharmaceutical Studies [PDF]

open access: yes, 2019
© 2019 American Chemical Society.The skin is the main barrier between the internal body environment and the external one. The characteristics of this barrier and its properties are able to modify and affect drug delivery and chemical toxicity parameters.
Almerico, Anna Maria   +5 more
core   +2 more sources

Ligand Lone-Pair Influence on Hydrocarbon C-H Activation: A Computational Perspective [PDF]

open access: yes, 2010
Mid to late transition metal complexes that break hydrocarbon C-H bonds by transferring the hydrogen to a heteroatom ligand while forming a metal-alkyl bond offer a promising strategy for C-H activation.
Cundari, Thomas R.   +4 more
core   +2 more sources

Dissociation of hydrogen molecules on the clean and hydrogen-preadsorbed Be(0001) surface

open access: yes, 2011
Using first-principles calculations, we systematically study the potential energy surfaces and dissociation processes for hydrogen molecules on the clean and hydrogen-preadsorbed Be(0001) surfaces.
Allouche   +37 more
core   +1 more source

High-pressure behavior of dense hydrogen up to 3.5 TPa from density functional theory calculations

open access: yes, 2012
Structural behavior and equation of state of atomic and molecular crystal phases of dense hydrogen at pressures up to 3.5 TPa are systematically investigated with density functional theory. The results indicate that the Vinet EOS model that fitted to low-
Geng, Hua Y.   +3 more
core   +1 more source

Gut microbiota facilitates dietary heme-induced epithelial hyperproliferation by opening the mucus barrier in colon [PDF]

open access: yes, 2015
Colorectal cancer risk is associated with diets high in red meat. Heme, the pigment of red meat, induces cytotoxicity of colonic contents and elicits epithelial damage and compensatory hyperproliferation, leading to hyperplasia.
Clara Belzer   +13 more
core   +2 more sources

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