Results 111 to 120 of about 2,752,747 (293)

Saha Equation for the Photo-Ionization of Hydrogen Atoms in Partially Ionized Relativistic Hydrogen Plasma and the Effect of Gravity on the Binding of Hydrogen Atoms in Rindler Space [PDF]

Open Access Journal of Physics. volume 2, Issue 3, 2018, Pp 25-29, 2018
We have studied Saha equation for photo-ionization of hydrogen atoms in partially ionized relativistic hydrogen plasma in Rindler space. Following the principle of equivalence, we have obtained the abundances of neutral hydrogen atoms, hydrogen ions and the electrons in dynamic equilibrium of the photo-ionization reaction of neutral hydrogen atoms and ...
arxiv  

MolProbity: More and better reference data for improved all‐atom structure validation

Protein Science, 2018
This paper describes the current update on macromolecular model validation services that are provided at the MolProbity website, emphasizing changes and additions since the previous review in 2010.
Christopher J. Williams, J. Headd, N. Moriarty, M. G. Prisant, Lizbeth L. Videau, Lindsay N. Deis, Vishal Verma, D. Keedy, B. Hintze, Vincent B. Chen, Swati Jain, Steven M. Lewis, W. B. Arendall, J. Snoeyink, P. D. Adams, Simon C. Lovell, J. Richardson, David C Richardson   +17 more
semanticscholar   +1 more source

SO(4) symmetry in hydrogen-atom-like model with spin

Results in Physics
As the simplest atom in nature, the hydrogen atom has been explored thoroughly from the perspective of non-relativistic quantum mechanics to relativistic quantum mechanics.
Xing-Yan Fan, Xiang-Ru Xie, Sheng-Ming Li, Jing-Ling Chen   +3 more
doaj  

Weber’s electrodynamics for the hydrogen atom

Indonesian Journal of Applied Physics, 2015
The original Weber action at a distance theory is valid for slowly varying effects, and it in addition to predicting all of the usual electrodynamical results, leads to crucial effects where the Maxwell theory fails.
H. Torres-Silva, J. López-Bonilla, R. López-Vázquez, J. Rivera-Rebolledo   +3 more
doaj   +1 more source

Direct Aldehyde C-H Arylation and Alkylation via the Combination of Nickel, Hydrogen Atom Transfer, and Photoredox Catalysis.

Journal of the American Chemical Society, 2017
A mechanism that enables direct aldehyde C-H functionalization has been achieved via the synergistic merger of photoredox, nickel, and hydrogen atom transfer catalysis.
Xiaheng Zhang, D. MacMillan
semanticscholar   +1 more source

Establishing Thermodynamic Graphs of Nitrogenous Radical Cations Abstracting Hydrogen Atoms and Their Applications in Photoredox Reactions

Molecules
Nitrogenous compounds have been extensively utilized as hydrogen atom transfer (HAT) catalysts in photoredox reactions, with nitrogenous radical cations being the actual hydrogen atom abstractors. Building upon our previous work, 120 thermodynamic graphs
Xia Zhao, Yi-Lin Hou, Jun Yang, Xin-Hua Wang, Chong-Shan Hu, Xiao-Qing Zhu, Guang-Bin Shen   +6 more
doaj   +1 more source

Atoms can be divided into three categories: polar, non-polar and hydrogen atom [PDF]

arXiv, 2010
Since the time of Rutherford 1911) physicists and chemists commonly believed that with no electric field, the nucleus of an atom is at the centre of the electron cloud, atoms do not have permanent electric dipole moment (EDM), so that there is no polar atom in nature. In the fact, the idea is untested hypothesis.
arxiv  

Crystal structure and Hirshfeld surface analysis of 2,4-diamino-6-methyl-1,3,5-triazin-1-ium trichloroacetate monohydrate

Acta Crystallographica Section E: Crystallographic Communications, 2018
The asymmetric unit of the title molecular salt, C4H8N5+·C2Cl3O2−·H2O, coomprises a 2,4-diamino-6-methyl-1,3,5-triazin-1-ium cation, a trichloroacetate anion and a water molecule of solvation.
Ramalingam Sangeetha, Kasthuri Balasubramani, Kaliyaperumal Thanigaimani, Savaridasson Jose Kavitha   +3 more
doaj   +1 more source

Interaction of a slow monopole with a hydrogen atom [PDF]

arXiv, 1996
The electric dipole moment of the hydrogen-like atom induced by a monopole moving outside the electron shell is calculated. The correction to the energy of the ground state of the hydrogen atom due to this interaction is calculated.
arxiv  

Atomic hydrogen: the quantum gas [PDF]

Physics World, 1995
It was a complete surprise when Isaac Silvera and his colleagues at the University of Amsterdam observed the existence of a remarkably stable gas of hydrogen atoms in 1979. They found that a gas of the so-called "atom of atoms" could be confined for several minutes in a cryogenic test cell close to absolute zero, provided that the walls were coated ...
openaire   +4 more sources