1,825 research outputs found

    A summary of terminology used in tephra-related studies

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    The word ‘tephra’, derived from a Greek word for ash, is a collective term for all the unconsolidated, primary pyroclastic products of a volcanic eruption. We summarise here the meanings and applicability of this and related terms, including tephrostratigraphy, tephrochronology, tephrochronometry, tephrology, and cryptotephra. These and other tephra-based terms, some of which are erroneous or unnecessary, have been used in a wide range of stratigraphic and paleoenvironmental disciplines and in archaeology

    The ABCs of Alphabets and Scripts in Academic Library Research

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    This poster guides library users seeking non-English materials through optimized paths toward their materials through 4 cases based on their answers to two questions: 1) Do you know the exact title you need? 2) Do you speak the language of the materials you need? It provides guidance on transliteration, translation, and resources for conducting non-English research. The 4 cases represent an attempt at a contextually aware approach to meeting users' needs, toward a possible search experience that would be guided by automated tools

    The ABCs of Alphabets and Scripts in Academic Library Research

    Get PDF
    This poster guides library users seeking non-English materials through optimized paths toward their materials through 4 cases based on their answers to two questions: 1) Do you know the exact title you need? 2) Do you speak the language of the materials you need? It provides guidance on transliteration, translation, and resources for conducting non-English research. The 4 cases represent an attempt at a contextually aware approach to meeting users' needs, toward a possible search experience that would be guided by automated tools

    What Goes Where When in Managing Research Data?

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    David Lowe, MLIS, is Data Management Services Librarian, Homer Babbidge Library, University of Connecticut. This presentation provided an overview of the data services projects being undertaken by the University of Connecticut Libraries

    Thermal Analyses of the Los Angeles Smog Aerosol

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    It has been shown by earlier studies on the formation of the Los Angeles smog aerosol, that a significant fraction of the particulate matter in the visible size range is made by secondary gas-particle conversion processes, and that it consists mainly of liquid matter. In this study the volatility was studied quantitatively by heating the smog aerosol up to 250°C and simultaneously measuring the scattering coefficient using a nephelometer and the change of size distribution by an optical counter. The thermal analyses revealed that 50–80% of the submicron aerosol mass is volatile at 220°C. Inspection of the shapes of thermo-nephelograms (bscat vs temperature) also revealed that photochemically formed aerosols have distinctly different thermo-nephelograms than those obtained on humid “hazy” days. Thus it is suggested that thermal analyses may at least in some instances provide the means of on-line monitoring the origin of the ambient aerosol

    Modifying the Einstein Equations off the Constraint Hypersuface

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    A new technique is presented for modifying the Einstein evolution equations off the constraint hypersurface. With this approach the evolution equations for the constraints can be specified freely. The equations of motion for the gravitational field variables are modified by the addition of terms that are linear and nonlocal in the constraints. These terms are obtained from solutions of the linearized Einstein constraints.Comment: 4 pages, 1 figure, uses REVTe

    Statistical Entropy of Nonextremal Four-Dimensional Black Holes and U-Duality

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    We identify the states in string theory which are responsible for the entropy of near-extremal rotating four-dimensional black holes in N=8N=8 supergravity. For black holes far from extremality (with no rotation), the Bekenstein-Hawking entropy is exactly matched by a mysterious duality invariant extension of the formulas derived for near-extremal black holes states.Comment: 9 pages, harvma
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