10,997 research outputs found

    Ultraviolet Resonance Lamp-Patent

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    Development of ultraviolet resonance lamp with improved transmission of radiatio

    Improved ultraviolet resonance lamp

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    Removal of the seal area from the path of the lamp discharge eliminates the gradual deterioration of lithium fluoride window surfaces from condensation of products formed by interaction of a resonant rare-gas discharge with window sealing materials. The discharge is confined to the inner tube

    Hempstead Union Free School District and United Public Service Employees Union

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    In the matter of the fact-finding between the Hempstead Union Free School District, employer, and the United Public Service Employees Union, union. PERB case no. M2009-300. Before: Stuart L. Bass, fact finder

    The Drell-Hearn-Gerasimov Sum-Rule at Polarized HERA

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    We discuss the potential of polarized HERA to measure the spin dependent part of the total photoproduction cross-section at large sγp\sqrt{s_{\gamma p}}.Comment: 7 pages, LaTeX, 1 figure generated as fig1.tex. To appear in Proc. Workshop on ``Physics with Polarized Protons at HERA'

    Anomalous Transport Processes in Anisotropically Expanding Quark-Gluon Plasmas

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    We derive an expression for the anomalous viscosity in an anisotropically expanding quark-gluon-plasma, which arises from interactions of thermal partons with dynamically generated color fields. The anomalous viscosity dominates over the collisional viscosity for large velocity gradients or weak coupling. This effect may provide an explanation for the apparent ``nearly perfect'' liquidity of the matter produced in nuclear collisions at RHIC without the assumption that it is a strongly coupled state.Comment: 31 pages, 1 figure, some typos in published version are correcte

    Matrix isolation study of the photolysis of cyanogen azide. The infrared and ultraviolet spectra of the free radical NCN

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    Infrared and ultraviolet absorption spectra of free radical in photolysis of cyanogen azid

    Effect of geometrical size of the particles in a hot and dense hadron gas

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    Incorporation of the finite size of baryons into the equation of state (EOS) of a hot and dense hadron gas (HG) in a thermodynamically consistent manner has been a much studied problem. We first review its current status. Various models have been proposed in order to account for the repulsive force generated by the hard-core geometrical size of the baryons resulting in an excluded volume effect in the EOS. We examine the criterion of the thermodynamical consistency of these models and summarize their shortcomings. In order to remove the shortcomings, we propose a new model which incorporates the excluded volume effect in a thermodynamically consistent manner. We find that the new model works even for the cases of extremely large temperatures and densities where most of other approaches fail. Furthermore, the new expressions for thermodynamical variables resemble in form with those obtained from thermodynamically inconsistent models and thus a useful correction factor has been suggested here which converts inconsistent expressions into thermodynamically consistent ones. Finally we compare the predictions of new model with those obtained from various old models.Comment: 19 pages, 9 figures, accepted for publication in Phys. Rev.

    An explicit KO-degree map and applications

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    The goal of this note is to study the analog in unstable A1{{\mathbb A}^1}-homotopy theory of the unit map from the motivic sphere spectrum to the Hermitian K-theory spectrum, i.e., the degree map in Hermitian K-theory. We show that "Suslin matrices", which are explicit maps from odd dimensional split smooth affine quadrics to geometric models of the spaces appearing in Bott periodicity in Hermitian K-theory, stabilize in a suitable sense to the unit map. As applications, we deduce that KiMW(F)=GWii(F)K^{MW}_i(F) = GW^i_i(F) for i≤3i \leq 3, which can be thought of as an extension of Matsumoto's celebrated theorem describing K2K_2 of a field. These results provide the first step in a program aimed at computing the sheaf πnA1(An∖0)\pi_{n}^{{\mathbb A}^1}({\mathbb A}^n \setminus 0) for n≥4n \geq 4.Comment: 36 Pages, Final version, to appear Journal of Topolog
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