Results 81 to 90 of about 611,030 (339)

Development of Aluminum Scandium Alloys for Hydrogen Storage Valves

Advanced Engineering Materials, EarlyView.
Different aluminum alloy series and various aluminum‐scandium alloys with differing Sc and Zr levels are evaluated for use in hydrogen storage valve production. The alloys undergo hardness testing, optical microscopy, and tensile strength analysis, with hardening behavior studied under varying conditions.
Francisco García‐Moreno, Tillmann Robert Neu, Markus Eberl, Paul Hans Kamm, Hans‐Wolfgang Seeliger   +4 more
wiley   +1 more source

N′-(5-Bromo-2-hydroxybenzylidene)-3,4,5-trihydroxybenzohydrazide dihydrate

Acta Crystallographica Section E, 2008
The title compound, C14H11BrN2O5·2H2O, crystallizes as hydrogen-bonded sheets. The 2-hydroxy group on the benzylidene group forms an intramolecular hydrogen bond to the N atom of the C=N double bond.
Hapipah M. Ali, Subramaniam Puvaneswary, Ward T. Robinson, Seik Weng Ng, Abeer A. Alhadi   +4 more
doaj   +1 more source

New Reflections on Electron's Energy and Wavefunction in the Hydrogen Atom

, 2009
Schrodinger's equation predicts something very peculiar about the electron in the Hydrogen atom: its total energy must be equal to zero. Unfortunately, an analysis of a zero-energy wavefunction for the electron in the Hydrogen atom has not been attempted
Bakhoum, Ezzat G.
core   +2 more sources

Wafer Bonding Technologies for Microelectromechanical Systems and 3D ICs: Advances, Challenges, and Trends

Advanced Engineering Materials, EarlyView.
This review explores wafer bonding technologies, covering wafer preparation, activation methods, and bonding mechanisms. It compares direct and indirect bonding, highlights recent advancements and future trends, and examines applications in 3D integration and packaging.
Abdul Ahad Khan, Tuan‐Khoa Nguyen, Quang Thang Trinh, Nam‐Trung Nguyen, Dzung Viet Dao, Yong Zhu   +5 more
wiley   +1 more source

1-Methylamino-3-(2,4,6-trimethylphenyl)propan-2-ol

Acta Crystallographica Section E, 2011
The methylaminopropyl chain in the title compound, C13H21NO, adopts an extended zigzag conformation and the N atom shows a trigonal coordination. The N atom acts as hydrogen-bond acceptor to the hydroxy group of an adjacent molecule, generating a helical
Abel M. Maharramov, Ali N. Khalilov, Atash V. Gurbanov, Mirze A. Allahverdiyev, Seik Weng Ng   +4 more
doaj   +1 more source

Interpreting Attoclock Measurements of Tunnelling Times

, 2015
Resolving in time the dynamics of light absorption by atoms and molecules, and the electronic rearrangement this induces, is among the most challenging goals of attosecond spectroscopy.
A Kamor, A Landsman, A Scrinzi, Alejandro Zielinski, AN Pfeiffer, Anatoli Kheifets, AP Pfeiffer, Armin Scrinzi, AS Kheifets, AS Kheifets, D Shafir, E Goulielmakis, Felipe Morales, Harm Geert Muller, HG Muller, I Ivanov, Igor Ivanov, J Breidbach, J Kaushal, Jivesh Kaushal, JM Dahlström, K Klunder, L Tao, L Torlina, L Torlina, L Torlina, Lisa Torlina, LR Moore, M Ivanov, M Schultze, Misha Ivanov, NI Shvetsov-Shilovski, O Smirnova, Olga Smirnova, P Eckle, P Eckle, R Boge, R Pazourek, S Sukiasyan, S Sukiasyan, Suren Sukiasyan, T Carette, T Nubbemeyer, X Wang   +43 more
core   +1 more source

CALPHAD‐Guided Prediction and Interpretation of Phase Formation in Ta–Mo–Cr–Ti–Al Refractory High‐Entropy Alloys

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, Chongchong Tang, Carsten Schroer, Björn Schäfer, Judith Jung, Michael Dürrschnabel, Ute Jäntsch, Bronislava Gorr   +7 more
wiley   +1 more source

(E)-2-Amino-4-(3,3-dimethyl-2-oxobutylidene)-1-[2-(2-hydroxyethoxy)ethyl]-6-methyl-1,4-dihydropyridine-3-carbonitrile

Acta Crystallographica Section E, 2012
In the title compound, C17H25N3O3, there are intramolecular hydrogen bonds between an amine H atom and the epoxy O atom, and between a dihydropyridine ring H atom and the ketone O atom.
Hyung Jin Kim, Young Hyun Kim, Enkhzul Otgonbaatar, Chee-Hun Kwak   +3 more
doaj   +1 more source

Ground State of the Hydrogen Atom via Dirac Equation in a Minimal Length Scenario

, 2013
In this work we calculate the correction to the ground state energy of the hydrogen atom due to contributions arising from the presence of a minimal length.
Fabris, J. C., Francisco, R. O., Nogueira, J. A., Oakes, T. L. Antonacci   +3 more
core   +1 more source

ON THE CONTINUOUS SPECTRUM OF THE HYDROGEN ATOM [PDF]

Proceedings of the National Academy of Sciences, 1929
The purpose of the present paper is to obtain expressions for the intensities in the continuous spectrum of atomic hydrogen suitable for numerical calculations. This purpose is accomplished by means of a new integral representation for the wave function in this special case.
Epstein, Paul S., Muskat, Morris
openaire   +4 more sources