1,129 research outputs found
Alcohol Use, Abuse, and Dependency in Shanghai
The use of alcohol for social and ceremonial occasions was recorded in Chinese history as early as 1760 B.C. during the Yin Dynasty (Ci-Hai Encyclopedia, 1979:936). The cultural tradition of ancient China placed alcoholic beverages at the center of social occasions, which presumably was the origin of the adage: Without wine, there is no li (or etiquette). Thus, the use of alcoholic beverages has always been accompanied by the concept of propriety and the discharging of one\u27s role obligations m social functions, rather than that of personal indulgence
Multiple magnetoplasmon polaritons of magneto-optical graphene in near-field radiative heat transfer
Graphene, as a two-dimensional magneto-optical material, supports
magnetoplasmon polaritons (MPP) when exposed to an applied magnetic field.
Recently, MPP of a single-layer graphene has shown an excellent capability in
the modulation of near-field radiative heat transfer (NFRHT). In this study, we
present a comprehensive theoretical analysis of NFRHT between two multilayered
graphene structures, with a particular focus on the multiple MPP effect. We
reveal the physical mechanism and evolution law of the multiple MPP, and we
demonstrate that the multiple MPP allow one to mediate, enhance, and tune the
NFRHT by appropriately engineering the properties of graphene, the number of
graphene sheets, the intensity of magnetic fields, as well as the geometric
structure of systems. We show that the multiple MPP have a quite significant
distinction relative to the single MPP or multiple surface plasmon polaritons
(SPPs) in terms of modulating and manipulating NFRHT
Phase-resolved spectral analysis of 4U 1901+03 during its outburst
The high mass X-ray binary 4U 1901+03 was reported to have the pulse profile
evolving with the X-ray luminosity and energy during its outburst in
February-July 2003: the pulse peak changed from double to single along with the
decreasing luminosity. We have carried out a detailed analysis on the
contemporary phase-resolved energy spectrum of 4U 1901+03 as observed by Rossi
X-ray Timing Explorer (RXTE). We find that, both the continuum and the pulse
spectra are phase dependent. The optical depth derived from the pulse spectrum
is in general larger than that from the continuum. Fe Ka emission line is only
detected in the spectrum of the continuum and is missing in the pulse spectrum.
This suggests an origin of Fe emission from the accretion disk but not the
surface of the neutron star.Comment: 18 pages, 8 figures, accepted by Ap
(E)-3-Bromo-N′-(5-bromo-2-hydroxybenzylidene)benzohydrazide
The title compound, C14H10Br2N2O2, was synthesized by the reaction of 5-bromosalicylaldehyde with an equimolar quantity of 3-bromobenzohydrazide in methanol. The dihedral angle between the two benzene rings is 10.5 (4)°. In the crystal structure, molecules are linked through intermolecular N—H⋯O hydrogen bonds to form chains parallel to the c axis, and an intramolecular O—H⋯N interaction also occurs
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