77,602 research outputs found
Communication: A simple full range analytical potential for H<sub>2</sub> b<sup>3</sup>Σ<sup>+</sup><sub>u</sub>, H - He <sup>2</sup>Σ<sup>+</sup>, and He<sub>2</sub> <sup>1</sup>Σ<sup>+</sup><sub>g</sub>
No full textThe Tang-Toennies potential for the weakly interacting systems H2 b3Σ+u, H–He 2Σ+, and He2 1Σ+g is extended down to the united atom limit of vanishing internuclear distance. A simple analytic expression connects the united atom limiting potential with the Tang-Toennies potential in the well region. The new potential model is compared with the most recent ab initio calculations for all three systems. The agreement is better than 20% (H2 and He2) or comparable with the differences in the available ab initio calculations (H–He) over six orders of magnitude corresponding to the entire range of internuclear distances
Inversion of GPS measurements for a layer of negative dislocation distribution in north China
No full textAuthor name used in this publication: Wu, J. C.Author name used in this publication: Tang, H. W.Author name used in this publication: Chen, Y. Q.2003-2004 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishedVoR allowe
A 2 h periodic variation in the low-mass X-ray binary Ser X-1
No full textSpectroscopy of the low-mass X-ray binary Ser X-1 using the Gran Telescopio Canarias have revealed a ?2 h periodic variability that is present in the three strongest emission lines. We tentatively interpret this variability as due to orbital motion, making it the first indication of the orbital period of Ser X-1. Together with the fact that the emission lines are remarkably narrow, but still resolved, we show that a main-sequence K dwarf together with a canonical 1.4 M? neutron star gives a good description of the system. In this scenario, the most likely place for the emission lines to arise is the accretion disc, instead of a localized region in the binary (such as the irradiated surface or the stream-impact point), and their narrowness is due instead to the low inclination (?10°) of Ser X-1
Application of hydrogen-storage alloy electrode in electrochemical reduction of glucose
No full textElectrolysis of glucose was performed at constant potential using hydrogen-storage alloy as catalytic reduction electrode. A superficial treatment and activation of the hydrogen-storage alloy powder had an obvious effect on improving the current efficiency for the generation of sorbitol. The most favorable results were obtained when a current density of 8 mA cm(-2), a voltage of 4.0-5.0 V and a pH of 8 at a temperature of 30 degreesC are used. Prior to use the electrode was treated for 2 h at 80 degreesC with a solution containing KBH4 (0.5 mol/l), KF (0.5 mol/l) and KOH (6 mol/l). Under optimized conditions the current efficiency for sorbitol by electrolyzing glucose exceeded 90%. The yield of sorbitol was around 80%. The lifetime of the electrode was tested and analyzed, and methods of regeneration are discussed. (C) 2004 Elsevier B.V. All rights reserved
Search for h(c) -> pi(+)pi(-) J/psi via psi(3686) -> pi(0)pi(+)pi(-) J/psi
No full textUsing a data sample of 448.1 x 10(6) psi(3686) events collected with the BESIII detector operating at the BEPCII, we perform search for the hadronic transition h(c)-> pi(+)pi(-) J/psi via psi (3686) -> pi(0)hc. No signals of the transition are observed, and the upper limit on the product branching fraction B(sigma(3686) -> pi(0)h(c))B(h(c) -> pi(+)pi(-) J/psi) at the 90% confidence level (C. L.) is determined to be 2.0 x 10(-6). This is the most stringent upper limit to date
FIGURE 3. Hatigoria longistylia Tang & Zhang n in Review of the leafhopper genus Hatigoria Distant with one new species (Hemiptera: Cicadellidae: Hylicinae)
No full textFIGURE 3. Hatigoria longistylia Tang & Zhang n. sp., Holotype ♂: A. Habitus, dorsal view; B. Habitus, lateral view; C. Head, dorsal view; D. Face; E. Pygofer, lateral view; F. Pygofer, dorsal view; G. Pygofer, ventral view; H. Connective and style, ventral view; I. Aedeagus, dorsal view; J. Subgenital plate, ventral view; K. Aedeagus, lateral view. Scale bars = 1.0 mm.Published as part of Tang, Jiu & Zhang, Yalin, 2021, Review of the leafhopper genus Hatigoria Distant with one new species (Hemiptera: Cicadellidae: Hylicinae), pp. 358-366 in Zootaxa 5005 (3) on page 364, DOI: 10.11646/zootaxa.5005.3.10, http://zenodo.org/record/514160
Marilyn Millet Tang
No full text"Black-and-white photo image of Marilyn Millet Tang, President and CEO of Certified Interior Systems.
An Image Based Feature Space and Mapping for Linking Regions and Words
No full textWe propose an image based feature space and define a mapping of both image regions and textual labels into that space. We believe the embedding of both image regions and labels into the same space in this way is novel, and makes object recognition more straightforward. Each dimension of the space corresponds to an image from the database. The coordinates of an image segment(region) are calculated based on its distance to the closest segment within each of the images, while the coordinates of a label are generated based on their association with the images. As a result, similar image segments associated with the same objects are clustered together in this feature space, and should also be close to the labels representing the object. The link between image regions and words can be discovered from their separation in the feature space. The algorithm is applied to an image collection and preliminary results are encouraging
Observation of h(1)(1380) in the J/psi -> eta ' K(K)over-bar pi decay
No full textUsing 1.31 x 10(9) J/psi events collected by the BESIII detector at the BEPCII e(+)e(-) collider, we report the first observation of the h(1)(1380) in J/psi -> eta'h(1)(1380) with a significance of more than ten standard deviations. The mass and width of the possible axial-vector strangeonium candidate h(1)(1380) are measured to be M = (1423.2 +/- 2.1 +/- 7.3) MeV/c(2) and Gamma = (90.3 +/- 9.8 +/- 17.5) MeV. The product branching fractions, assuming no interference, are determined to be B(J/psi -> eta'h(1)(1380)) x B(h(1)(1380) -> K*(892)K-+(-)+c.c.) = (1.51 +/- 0.09 +/- 0.21) x 10(-4) in eta'K+K-pi(0) mode and B(J/psi -> eta'h(1)(1380)) x B(h(1)(1380) -> K*(892)(K) over bar +c.c.) =(2.16 +/- 0.12 +/- 0.29) x 10(-4) in eta'(KSK +/-)-K-0 pi(-/+) mode. The first uncertainties are statistical and the second are systematic. Isospin symmetry violation is observed in the decays h(1)(1380) K*(892)K-+(-) + c.c. and h(1)(1380) -> K*(892)(0)(K) over bar (0) + c.c.. Based on the measured h(1)(1380) mass, the mixing angle between the states h(1)(1170) and h(1)(1380) is determined to be (35.9 +/- 2.6)degrees, consistent with theoretical expectations
A note on Tang and He’s paper
No full textIn this paper, we establish new Lyapunov-type inequalities for two classes of one-dimensional quasilinear elliptic systems of resonant type, which improve the recent results of Tang and He [X. H. Tang, X. He, Lower bounds for generalized eigenvalues of the quasilinear systems, J. Math. Anal. Appl. 385 (2012) 72-85] when 1 < p(i) < 2 for i = 1,2, ..., n. (C) 2011 Elsevier Inc. All rights reserved
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