Results 71 to 80 of about 611,030 (339)

Crystal structure of (E)-N-{2-[2-(3-chlorobenzylidene)hydrazinyl]-2-oxoethyl}-4-methylbenzenesulfonamide monohydrate

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
The molecule of the title compound, C16H16ClN3O3S·H2O, is L-shaped being bent at the S atom; the S—N—C—C torsion angle is 132.0 (3)°. The central part of the molecule, C—C—N—N=C, is almost linear, with the C—C—N—N and C—N—N=C torsion angles being −174.1 (
H. Purandara   +2 more
doaj   +1 more source

Gauge invariant hydrogen atom Hamiltonian

open access: yes, 2010
For quantum mechanics of a charged particle in a classical external electromagnetic field, there is an apparent puzzle that the matrix element of the canonical momentum and Hamiltonian operators is gauge dependent. A resolution to this puzzle is recently
Chen, Xiang-Song   +3 more
core   +1 more source

Robocasting of a Water‐Based Biopolymer/WO3 Nanopowder Paste as a Precursor to Tungsten Carbide Lattices

open access: yesAdvanced Engineering Materials, EarlyView.
This study demonstrates a novel, additive manufacturing approach to produce complex, porous tungsten carbide structures using water‐based direct ink writing/robocasting. Leveraging a modified commercial printer and heat treatment, the process yields lightweight, electrically conductive 3D architectures capable of supporting a mechanical load.
James Bentley Bevis   +3 more
wiley   +1 more source

WKB-approach for the 1D hydrogen atom

open access: yesResults in Physics, 2019
Taking into account results of WKB-approximation, we derive exact quantum energies and wave functions of even and odd states in the one-dimensional Coulomb potential V(x)=-1/x,-∞
A.M. Ishkhanyan, V.P. Krainov
doaj   +1 more source

Low‐Activation Compositionally Complex Alloys for Advanced Nuclear Applications—A Review

open access: yesAdvanced Engineering Materials, EarlyView.
Low‐activation compositionally complex alloys (LACCAs) are advanced metallic materials primarily composed of low‐activation elements, offering advantages such as rapid compliance with operational standards and safe recyclability. This review highlights their potential for extreme high‐temperature irradiation environments as structural materials for ...
Yangfan Wang   +8 more
wiley   +1 more source

Weber’s electrodynamics for the hydrogen atom

open access: yesIndonesian 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   +3 more
doaj   +1 more source

Hydrogen adsorption on Na-SWCNT systems

open access: yes, 2012
We investigate the hydrogen adsorption capacity of Na-coated carbon nanotubes (Na-SWCNTs) using first-principles electronic structure calculations at absolute temperature and pressure.
Chacko, Sajeev   +3 more
core   +1 more source

Graphene–Catechol Dental Sealant: Antibacterial and Mechanical Evaluation

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents dental sealants made with graphene and L‐DOPA‐modified graphene. L‐DOPA enhances graphene dispersion, improving sealant properties. The material shows antibacterial activity against S. mutans and L. casei, along with high strength and elasticity.
Renata Pereira   +6 more
wiley   +1 more source

{2-[2-(Ethylamino)ethyliminomethyl]-5-methoxyphenolato}thiocyanatonickel(II)

open access: yesActa 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

Exact Solution of the Klein-Gordon Equation for the Hydrogen Atom Including Electron Spin [PDF]

open access: yes, 2010
The term describing the coupling between total angular momentum and energy-momentum in the hydrogen atom is isolated from the radial Dirac equation and used to replace the corresponding orbital angular momentum coupling term in the radial K-G equation ...
Ducharme, Robert J.
core  

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