نتایج جستجو برای: hydrogen molecule

تعداد نتایج: 273232  

2014
Takeo Oku Enrico Sciubba

Boron nitride (BN) nanomaterials were synthesized from LaB6 and Pd/boron powder, and the hydrogen storage was investigated by differential thermogravimetric analysis, which showed possibility of hydrogen storage of 1–3 wt%. The hydrogen gas storage in BN and carbon (C) clusters was also investigated by molecular orbital calculations, which indicated possible hydrogen storage of 6.5 and 4.9 wt%,...

Journal: :Molecular Physics 2021

Lutoslaw Wolniewicz has spent two or three months each summer from 1976 to 1994 as guest of Kurt Dressler in Zurich use the Computer Centre ETH for ab-initio calculations rovibronic energies and transition moments hydrogen molecule.

Journal: :The journal of physical chemistry. B 2013
Alexander A Atamas Herma M Cuppen Marina V Koudriachova Simon W de Leeuw

The thermodynamics of binary sII hydrogen clathrates with secondary guest molecules is studied with Monte Carlo simulations. The small cages of the sII unit cell are occupied by one H(2) guest molecule. Different promoter molecules entrapped in the large cages are considered. Simulations are conducted at a pressure of 1000 atm in a temperature range of 233-293 K. To determine the stabilizing ef...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2013
A J Horsewill K Goh S Rols J Ollivier M R Johnson M H Levitt M Carravetta S Mamone Y Murata J Y-C Chen J A Johnson X Lei N J Turro

The quantum dynamics of a hydrogen molecule encapsulated inside the cage of a C60 fullerene molecule is investigated using inelastic neutron scattering (INS). The emphasis is on the temperature dependence of the INS spectra which were recorded using time-of-flight spectrometers. The hydrogen endofullerene system is highly quantum mechanical, exhibiting both translational and rotational quantiza...

2008
Choongkeun Lee Sun-Kyung Park Kyung-Chul Min Yunsoo Kim Nam-Soo Lee

Pentamer cluster of azodicarbonamide (ADA) based on the crystalline structure was investigated for the equilibrium structure, the stabilization energies, and the vibrational properties at various levels of the density functional theory. Stretching force constants of N...H or O...H, and angle-bending force constants of N-H...N or N-H...O for intermolecular hydrogen bonds in the pentamer cluster ...

Journal: :The journal of physical chemistry. B 2015
Elvira Guardia Ioannis Skarmoutsos Marco Masia

The local hydrogen-bonding structure and dynamics of liquid water have been investigated using the Car-Parrinello molecular dynamics simulation technique. The radial distribution functions and coordination numbers around water molecules have been found to be strongly dependent on the number of hydrogen bonds formed by each molecule, revealing also the existence of local structural heterogeneiti...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2006
Yuji Chiba Yuichi Sutoh Yuzo Nishida

We have confirmed that dissociation of the dimeric SOD molecule into a monomeric one can be readily detected in solution by the use of capillary electrophoresis (CE), which is based on the fact that the peak height in the CE profile is highly dependent on the aggregation conditions of the protein molecule. Based on this fact, it has become apparent that the hydrogen peroxide molecule induces th...

Journal: :The Journal of chemical physics 2008
Fangtong Zhang Yong Seol Kim Li Zhou Agnes H H Chang Ralf I Kaiser

Crossed molecular beam experiments are performed to elucidate the synthesis of the 2,4-penta-diynylidyne [HCCCCC(X (2)Pi)] radical under single collision conditions--a crucial reaction intermediate to form polycyclic aromatic hydrocarbons and carbonaceous nanostructures in the interstellar medium and in combustion flames. The experiments demonstrate that the chemical dynamics of ground state ca...

Journal: :Chemical communications 2012
Sajal Kumar Das Chang Su Lim Sun Young Yang Ji Hee Han Bong Rae Cho

We report a two-photon probe (FS1) which shows a 21-fold two-photon excited fluorescence enhancement in response to H(2)S and can selectively detect H(2)S in a rat hippocampal slice at a depth of 90-190 μm by using two-photon microscopy.

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