Results 111 to 120 of about 623,551 (341)
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
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Turbulence in Atomic Hydrogen [PDF]
, 1999 Understanding the properties of interstellar turbulence is a great intellectual challenge and the urge to solve this problem is partially motivated by a necessity to explain the star formation mystery. This review deals with a recently suggested inversion technique as applied to atomic hydrogen.
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Sticking of atomic hydrogen on graphene
Journal of Physics: Condensed Matter, 2018 Recent years have witnessed an ever growing interest in the interactions between hydrogen atoms and a graphene sheet. Largely motivated by the possibility of modulating the electric, optical and magnetic properties of graphene, a huge number of studies have appeared recently that added to and enlarged earlier investigations on graphite and other carbon
Bonfanti, Matteo +2 more
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Production of Metallic Foam Precursors Using Current‐Activated Pressure‐Assisted Densification
Advanced Engineering Materials, EarlyView.A powder compaction metallurgical method, known as current‐activated pressure‐assisted densification, is applied to enhance the compaction of metal foam precursors. This method improves precursor quality by achieving higher density, lower electrical resistivity, and more uniform pore nucleation in the resulting foams, reducing energy consumption and ...
Tillmann Robert Neu +2 more
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Hydrazinium 2-amino-4-nitrobenzoate dihydrate: crystal structure and Hirshfeld surface analysis
Acta Crystallographica Section E: Crystallographic Communications, 2017 In the anion of the title salt hydrate, H5N2+·C7H5N2O4−·2H2O, the carboxylate and nitro groups lie out of the plane of the benzene ring to which they are bound [dihedral angles = 18.80 (10) and 8.04 (9)°, respectively], and as these groups are ...
James L. Wardell +2 more
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Advanced Functional Materials, EarlyView.Graded refractive index (GRI) structures are prepared from the layer‐by‐layer spray coating of the mesoporous SiO2 nanoparticles, showing high solar transparency and thermal emissivity. Under outdoor conditions, after 50 days, the GRI‐coated photovoltaics show on average 6.65 ± 1.48 °C lower than that of the non‐coated references, maintaining 80.9 ± 8 ...
Heesuk Jung +14 more
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Molecular Design of H2 Storage/Release Devices: A Direct Ab Initio MD Study
NanomaterialsTo advance a hydrogen-based energy society, the development of efficient hydrogen storage materials is essential. In particular, such materials are expected to be lightweight and chemically stable.
Hiroto Tachikawa
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2-Phenyl-2-(pyridin-2-yl)hexahydropyrimidine
Acta Crystallographica Section E, 2010 The title compound, C15H17N3, was prepared by reaction of benzoylpyridine and hexahydropyrimidine. The 1,3-diazinane ring adopts a chair conformation with one N—H group axial and the other equatorial.
Naleen B. Jayaratna, Richard E. Norman
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Precision Spectroscopy of Atomic Hydrogen
Journal of Physics: Conference Series, 2013 Precise determinations of transition frequencies of simple atomic systems are required for a number of fundamental applications such as tests of quantum electrodynamics (QED), the determination of fundamental constants and nuclear charge radii. The sharpest transition in atomic hydrogen occurs between the metastable 2S state and the 1S ground state ...
Beyer, Axel +18 more
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The effective cross section of the oriented hydrogen atom [PDF]
, 1927 Ronald G. J. Fraser
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