Results 81 to 90 of about 2,736,060 (244)
Acta Crystallographica Section E, 2011 In the title co-crystal, [Mo(C14H9ClN2O4)O2(CH3OH)]·C10H8N2, the deprotonated Schiff base O,N,O′-chelates to the MoVI atom, the three atoms involved in chelation comprising the fac sites of the octahedron surrounding the methanol ...
Ngui Khiong Ngan +3 more
doaj +1 more source
The influence of the electric polarization of hydrogen atoms on the red shift of its spectral lines [PDF]
arXiv, 2020 The Lorentz oscillator system is studied to interpret the spectral lines of hydrogen atoms. The dielectric constant of this system is analyzed, which takes into account the electrical polarization of hydrogen atoms. This dielectric constant gives the red shift of the spectral line and the appearance of the optical spectrum dip.
arxiv
Semi-classical analysis of real atomic spectra beyond Gutzwiller's approximation
, 2005 Real atomic systems, like the hydrogen atom in a magnetic field or the helium atom, whose classical dynamics are chaotic, generally present both discrete and continuous symmetries.
Benoît Grémaud +6 more
core +1 more source
On the q-analogue of the hydrogen atom [PDF]
Journal of Physics A: Mathematical and General, 1991 The discrete spectrum of a q-analogue of the hydrogen atom is obtained from a deformation of the Pauli equations. As an alternative, the spectrum is derived from a deformation of the four-dimensional oscillator arising in the application of the Kustaanheimo-Stiefel transformation to the hydrogen atom. A model of the 2s-2p Dirac shift is proposed in the
Kibler, Maurice,, Négadi, Tidjani
openaire +5 more sources
Nature Communications, 2019 The grand challenge in the development of atomically dispersed metallic catalysts is their low metal-atom loading density, uncontrollable localization and ambiguous interactions with supports, posing difficulty in maximizing their catalytic performance ...
K. Qi +18 more
semanticscholar +1 more source
Formation of the Pd atomic chain in hydrogen atmosphere [PDF]
arXiv, 2010 The formation of a Pd atomic chain in a hydrogen atmosphere was investigated by measurements of conductance and vibrational spectroscopy of a single molecular junction, and the theoretical calculation. While atomic chains were not formed for clean 3d and 4d metals, in the case of Pd (a 4d metal) atomic chains could be formed in the presence of hydrogen.
arxiv
{2-[2-(Ethylamino)ethyliminomethyl]-5-methoxyphenolato}thiocyanatonickel(II)
Acta Crystallographica Section E, 2010 In the title mononuclear nickel(II) complex, [Ni(C12H17N2O2)(NCS)], the metal atom is four-coordinated in a tetrahedrally distorted square-planar geometry by the phenolate O atom, the imine N atom and the amine N atom of the Schiff base ligand and by the
Lin Liu
doaj +1 more source
Mutual Influence of Different Hydrogen Concentration in α-Zirconium System with Vacancies [PDF]
arXiv, 2018 Hydrogen embrittlement in zirconium alloys is one of current challenges of nuclear reactor containment and can lead to a rapid decrease in mechanical properties of materials. Although many previous studies investigated the mechanism of hydrogen embrittlement at high hydrogen concentration, few studies concentrate on the mechanism at low hydrogen ...
arxiv
Prospects for hydrogen storage in graphene [PDF]
, 2012 Hydrogen-based fuel cells are promising solutions for the efficient and clean delivery of electricity. Since hydrogen is an energy carrier, a key step for the development of a reliable hydrogen-based technology requires solving the issue of storage and transport of hydrogen.
arxiv +1 more source
Noncommutative Coulombic Monopole
, 2005 We have constructed the appropriate Hamiltonian of the noncommutative coulombic monopole (i.e. the noncommutative hydrogen atom with a monopole). The energy levels of this system have been calculated, discussed and compared with the noncommutative ...
Armen Yeranyan +4 more
core +1 more source