Results 91 to 100 of about 605,322 (321)
Advanced Engineering Materials, EarlyView.This study designs Ta–Mo–Cr–Ti–Al refractory high‐entropy alloys with a disordered body‐centered‐cubic A2 crystal structure aiming for improved ductility, lower density, and oxidation resistance. Four alloy compositions are identified by thermodynamic calculations.
Kateryna Khanchych +7 more
wiley +1 more source
SO(4) symmetry in hydrogen-atom-like model with spin
Results in PhysicsAs 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 +3 more
doaj
Acta Crystallographica Section E, 2009 In the title compound, C18H13BrN4S·C3H7NO, the thiopyran ring and the adjacent six-numbered ring adopt distorted boat conformations. The molecules, lying about inversion centers, form hydrogen-bonded dimers involving one of the H atoms on the ...
Hai-Yan Zhang +2 more
doaj +1 more source
Strong Analytic Controllability for Hydrogen Control Systems
, 2004 The realization and representation of so(4,2) associated with the hydrogen atom Hamiltonian are derived. By choosing operators from the realization of so(4,2) as interacting Hamiltonians, a hydrogen atom control system is constructed, and it is proved ...
Chi, Quo-Shin +3 more
core +1 more source
Advanced Engineering Materials, EarlyView.This study explores combining two existing aerospace titanium alloy powders, processing them via field‐assisted sintering technology and the subsequent discovery of a novel alloy composition, termed S23, with ultra‐high tensile toughness. Fine‐scale alpha precipitates favorably form in the alloy despite the relatively slow cooling, providing an ...
Samuel Lister +2 more
wiley +1 more source
Bis(acetato-κO)bis(pyridine-2-aldoxime-κ2N,N′)nickel(II)
Acta Crystallographica Section E, 2012 In the mononuclear title compound, [Ni(CH3COO)2(C6H6N2O)2], the NiII atom is coordinated by two pyridine-2-aldoxime (PaoH) ligands and two acetate groups, with cis coordination for the pairs of identical ligands.
Youtao Si
doaj +1 more source
Advanced Engineering Materials, EarlyView.High‐performance nickel‐based superalloys are often not processible in additive manufacturing (AM) due to hot cracking. The findings in this manuscript propose an efficient method to mitigate cracking and enhance mechanical properties of these alloys by producing a metal matrix composite, contributing to the material and process perspective of the AM ...
Klaus Büßenschütt +3 more
wiley +1 more source
(E)-2-(4-Nitrobenzylideneamino)benzamide
Acta Crystallographica Section E, 2009 The title compound, C14H11N3O3, adopts an E conformation, with a dihedral angle of 41.8 (1) ° between the mean planes of the two benzene rings. One of the amino H atoms forms an intramolecular hydrogen bond with the amide N atom, while
Shu-Liang Wang +3 more
doaj +1 more source
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
Advanced Engineering Materials, EarlyView.The influence of Hot Isostatic Pressing (HIP) temperature on the microstructure and creep performance of powder bed fusion–laser beam processed CM247LC superalloy is investigated. Grain growth and γ’ precipitate evolution are characterized following HIP at varying temperatures.
Ahmed Fardan +4 more
wiley +1 more source