Results 61 to 70 of about 1,439,140 (304)

Electron impact excitation cross sections for allowed transitions in atoms

, 1995
We present a semiempirical Gaunt factor for widely used Van Regemorter formula [Astrophys. J. 136, 906 (1962)] for the case of allowed transitions in atoms with the LS coupling scheme. Cross sections calculated using this Gaunt factor agree with measured
A. Chutjian, A. K. Pradhan, A. Mahan, A. Van Raan, D. Cartwring, D. H. Crandall, D. H. Sampson, D. Leep, D. Leep, D. Rall, D. Sampson, D. Shemansky, D. Spence, E. Enemark, E. Stone, E. Stone, E. Zipf, F. A. Sharton, F. Donaldson, H. A. Bethe, H. Mousa, H. Van Regemorter, I. Bogdanova, I. I. Sobelman, I. I. Sobelman, I. P. Zapesochnyi, I. Zapesochnyi, J. Doering, J. Jobe, J. K. Ballou, J. Showalter, J. W. McConkey, M. Dillon, R. D. Cowan, R. Hall, R. Jonh, R. Long, R. Mewe, R. S. Schappe, S. Chen, S. M. Younger, S. Wang, V. P. Shevelko, W. Westerveld, W. Williams   +44 more
core   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

Optical Radiation from the Sputtered Species under Excitation of Ternary Mixtures of Noble Gases by the 6Li(n,α)3H Nuclear Reaction Products

Eurasian Chemico-Technological Journal, 2021
The present paper examines the luminescence of ternary Ar-Kr-Xe and Ne-Ar-Kr mixtures of noble gases in the spectral range from 300 to 970 nm, excited by the 6Li(n,α)3H nuclear reaction products in the core of a nuclear reactor.
K. Samarkhanov, M. Khasenov, E. Batyrbekov, Yu. Gordienko, Yu. Baklanova, I. Kenzhina, Ye. Tulubayev, I. Karambayeva   +7 more
doaj   +1 more source

Long range intermolecular forces in triatomic systems: connecting the atom-diatom and atom-atom-atom representations

, 2005
The long-range forces that act between three atoms are analysed in both atom-diatom and atom-atom-atom representations. Expressions for atom-diatom dispersion coefficients are obtained in terms of 3-body nonadditive coefficients.
Jeremy M. Hutson, Marko T. Cvitaš, Mérawa M, Pavel Soldán   +3 more
core   +1 more source

The Atom and the Molecule [PDF]

Resonance, 1916
n ...
openaire   +2 more sources

Cell wall target fragment discovery using a low‐cost, minimal fragment library

FEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan, Mathew Stanley, Olawale Raimi, Andrew T. Ferenbach, Helge C Dorfmueller, Daan M. F. van Aalten   +5 more
wiley   +1 more source

Nature of the Darwin term and ${(Z\alpha)^4 m^3/M^2}$ contribution to the Lamb shift for an arbitrary spin of the nucleus

, 1996
The contact Darwin term is demonstrated to be of the same origin as the spin-orbit interaction. The $(Z\alpha)^4 m^3/M^2$ correction to the Lamb shift, generated by the Darwin term, is found for an arbitrary nonvanishing spin of the nucleus, both half ...
A. I. Milstein, Barker W. A., Berestetskii V. B., I. B. Khriplovich, Pachucki K., Pachucki K., R. A. Sen'kov, Ryndin R. M., Schmidt-Kaler F.   +8 more
core   +1 more source

Similarity between positronium-atom and electron-atom scattering [PDF]

, 2014
We employ the impulse approximation for description of positronium-atom scattering. Our analysis and calculations of Ps-Kr and Ps-Ar collisions provide theoretical explanation of the similarity between the cross sections for positronium scattering and ...
Fabrikant, I. I., Gribakin, G. F.
core   +2 more sources

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

Electromagnetic modes of Maxwell fisheye lens

, 1996
We provide an analysis of the radial structure of TE and TM modes of the Maxwell fisheye lens, by means of Maxwell equations as applied to the fisheye case.
A. C. Chen, A. Frank, B. Ratra, C. T. Tai, C. T. Tai, D. T. Moore, G. Arfken, H. Rosu, I. S. Gradshteyn, J. A. Stratton, K. G. Budden, M. Born, M. Reyes   +12 more
core   +1 more source