Results 271 to 280 of about 404,334 (292)

HF inversion in the 2,5-dihydrofuran⋯HF complex

The Journal of Chemical Physics, 2001
The rotational spectrum of the hydrogen bond heterodimer 2,5-dihydrofuran⋯HF has been investigated in the frequency region 6–18.5 GHz using molecular beam Fourier transform microwave spectroscopy. The R-branch μa-type spectra of the parent, 2,5-dihydrofuran⋯DF, Cα13-2,5-dihydrofuran⋯HF and Cβ13-2,5-dihydrofuran⋯HF species have been measured.
Juan C. López, Susana Blanco, Alberto Lesarri, M. Eugenia Sanz, Felipe J. Lorenzo, José L. Alonso   +5 more
openaire   +1 more source

HF–HF differential scattering cross sections

The Journal of Chemical Physics, 1990
Close-coupled scattering calculations have been carried out for collisions between HF molecules in their ground vibrational state at a total energy of 1480 cm−1. State-to-state integral and differential cross sections were determined for transitions j1j2→j′1j′2, which refer to collisions HF(j1)+HF(j2)+ΔE→HF(j′1) +HF(j′2), where ΔE is the energy gap ...
Peter F. Vohralik, R. O. Watts, Millard H. Alexander   +2 more
openaire   +1 more source

The Established Therapies: HF-PEF and HF-REF

2016
Over the last few decades, our understanding of the pathophysiology, and subsequently treatment, of chronic heart failure with reduced ejection fraction (HFrEF) has grown considerably. While diuretics and digoxin were once the pillars of treatment for HFrEF, they did not offer any mortality benefits.
Arthur Menezes, Selim R. Krim, Hector O. Ventura   +2 more
openaire   +1 more source

Models for hydrogen-bonded π systems: ethylene⋯HF, allene⋯HF and cumulene⋯HF

Journal of Molecular Structure, 1988
Abstract Minima in the electrostatic energy, for accessible orientations, have been located for complexes of hydrogen fluoride with ethylene, allene and cumulene using a version of the Buckingham-Fowler model. The predicted equilibrium structures agree with available experimental results and with Legon and Millen's rules.
P.W. Fowler, P. Tole
openaire   +1 more source

Second virial coefficient of gaseous HF and rotational inelastic scattering for HF-HF collisions

Molecular Physics, 1984
A recently determined intermolecular potential for HF has been used to calculate the second virial coefficient of the gas in the temperature range 275-9000 K and the rotational inelastic cross sections for HF-HF collisions at a collision energy of 300 cm-1.
S. Bosanac, J.T. Brobjer, J.N. Murrell
openaire   +1 more source

Perturbation calculations of molecular interaction energies: an example, HF....HF

Chemical Physics Letters, 1986
Abstract An expression for the interaction energy of two molecules, obtained by expanding the wavefunction for the whole system in terms of antisymmetrized products of free-molecule functions and using a matrix perturbation scheme, is used in ab initio calculations on the HF dimer.
AMOVILLI, CLAUDIO, MCWEENY R.
openaire   +2 more sources

Vibrational relaxation rate of HF(2) by HF

Applied Optics, 1976
N, Cohen, J F, Bott
openaire   +2 more sources

???????????????????? ?? ?????????????????? ???????????????????????????? ?????????????????????????????????? ?????????? ?? ???????????????????????? ???????-Hf

2017
Different design of control rods (CR) with composite B???C-Hf absorber for VVER-1000 and results of investigation of dummies CR behavior at overheating in water vapor environment at the temperature range of 900 to 1200 ??C are presented. ????847 steel and ??110 have been used alloy as CR cladding.
openaire   +1 more source

Hf

2005
H. R. Schober, P. H. Dederichs
openaire   +2 more sources

Hf

2009
openaire   +2 more sources