Results 51 to 60 of about 388,039 (180)

Can Adsorption on Graphene be Used for Isotopic Enrichment? A DFT Perspective

Molecules, 2018
We have explored the theoretical applicability of adsorption on graphene for the isotopic enrichment of aromatic compounds. Our results indicate that for nonpolar molecules, like benzene, the model compound used in these studies shows a reasonable ...
Mateusz Pokora, Piotr Paneth
doaj   +1 more source

High temperature superconductivity in sulfur hydride under ultrahigh pressure: A complex superconducting phase beyond conventional BCS

, 2016
The recent report of superconductivity under high pressure at the record transition temperature of Tc=203K in sulfur hydride has been identified as conventional in view of the observation of an isotope effect upon deuteration.
Bianconi, Antonio, Bussmann-Holder, Annette, Kohler, Jurgen, Simon, Arndt, Whangbo, M. -H.   +4 more
core   +1 more source

Ligand effects, solvent cooperation, and large kinetic solvent deuterium isotope effects in gold(I)-catalyzed intramolecular alkene hydroamination

Beilstein Journal of Organic Chemistry
Kinetic studies on the intramolecular hydroamination of protected variants of 2,2-diphenylpent-4-en-1-amine were carried out under a variety of conditions with cationic gold catalysts supported by phosphine ligands.
Ruichen Lan, Brock Yager, Yoonsun Jee, Cynthia S. Day, Amanda C. Jones   +4 more
doaj   +1 more source

Isotope effect in superconductors with coexisting interactions of phonon and nonphonon mechanisms

, 2003
We examine the isotope effect of superconductivity in systems with coexisting interactions of phonon and nonphonon mechanisms in addition to the direct Coulomb interaction.
Anderson P. W., Beal-Monod M. T., Crawford M. K., Emery V. J., Foulkes I. F., Heidmann C.-P., Ishiguro T., Ito H., Kikugawa N., Kini A. M., Klein B. M., Kuwabara T., Maeno Y., Mao Z. Q., Miyake K., Oguchi T., Oshima K., Rice T. M., Scalapino D. J., Schlueter J. A., Shimahara H., Shimahara H., Shimahara H., Shimahara H., Shimahara H., Tokumoto M., Yamaji K.   +26 more
core   +1 more source

Enthalpy/Entropy Contributions to Conformational KIEs: Theoretical Predictions and Comparison with Experiment

Molecules, 2013
Previous theoretical studies of Mislow’s doubly-bridged biphenyl ketone 1 and dihydrodimethylphenanthrene 2 have determined significant entropic contributions to their normal (1) and inverse (2) conformational kinetic isotope effects (CKIEs).
Aaron Fong, Matthew P. Meyer, Daniel J. O'Leary   +2 more
doaj   +1 more source

Boron Isotope Effect in Superconducting MgB$_2$

, 2001
We report the preparation method of, and boron isotope effect for MgB$_2$, a new binary intermetallic superconductor with a remarkably high superconducting transition temperature $T_c$($^{10}$B) = 40.2 K.
B. Aronsson, C. E. Cunningham, C. Petrovic, D. D. Lawrie, D. R. Armstrong, E. G. Maksimov, G. Lapertot, J. Akimitsu, J. Bardeen, J. L. Hoard, J. P. Carbotte, J. P. Franck, K. O. Cheon, L. F. Mattheiss, N. Anderson, P. C. Canfield, R. Kishore, S. L. Bud'ko, W. L. McMillan   +18 more
core   +2 more sources

Ion Beam Analysis of Hydrogen Isotope Effect at Ti-Mo Interdiffusion Interface

Yuanzineng kexue jishu, 2022
In order to explore the effect of Ti-Mo interdiffusion on metal hydrogen absorption, hydrogen absorption isotope effects at the TiMo alloy due to the interdiffusion at interface were investigated by using ion beam analysis (IBA) which is a non ...
DUAN Yiming;LI Cong;ZHANG Weiguang;WANG Meng;SHI Liqun
doaj  

Isotope effects observed in diluted D2O/H2O mixtures identify HOD-induced low-density structures in D2O but not H2O

Scientific Reports, 2022
Normal and heavy water are solvents most commonly used to study the isotope effect. The isotope effect of a solvent significantly influences the behavior of a single molecule in a solution, especially when there are interactions between the solvent and ...
Anna Stefaniuk, Sylwester Gawinkowski, Barbara Golec, Aleksander Gorski, Kosma Szutkowski, Jacek Waluk, Jarosław Poznański   +6 more
doaj   +1 more source

Isotope mix effect on edge turbulent transport in pre-L–H transition conditions in JET-ILW

Nuclear Fusion
The heat flux at the edge of L-mode JET-ILW (Be wall and W divertor) pulses is studied using the gyrokinetic code Gyrokinetic Electromagnetic Numerical Experiment (GENE) in its flux-tube configuration as well as the quasi-linear turbulent transport model
G. Lo-Cascio, N. Bonanomi, C. Angioni, G. Birkenmeier, E.R. Solano, G. Szepesi, JET Contributors, EUROfusion Tokamak Exploitation Team   +7 more
doaj   +1 more source

Chlorine Isotope Effects from Isotope Ratio Mass Spectrometry Suggest Intramolecular C-Cl Bond Competition in Trichloroethene (TCE) Reductive Dehalogenation

Molecules, 2014
Chlorinated ethenes are prevalent groundwater contaminants. To better constrain (bio)chemical reaction mechanisms of reductive dechlorination, the position-specificity of reductive trichloroethene (TCE) dehalogenation was investigated.
Stefan Cretnik, Anat Bernstein, Orfan Shouakar-Stash, Frank Löffler, Martin Elsner   +4 more
doaj   +1 more source