17,880 research outputs found

    Investigation of strength of isolated vertebrae, phase IV Final technical report, 29 Oct. 1965 - 28 Oct. 1966

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    Dynamic strength measurements of human vertebrae under axial compressio

    Investigation of strength of isolated vertebrae Quarterly report, 30 Jan. - 29 May 1966

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    Strength of human vertebrae under various static and dynamic load

    VPI-7: The First Zincosilicate Molecular Sieve Containing Three-membered T-Atom Rings

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    VPI-7: the first microporous zincosilicate to contain 3-membered rings (3MR) is reported

    Coexistence of Antiferromagnetism and Superconductivity in Electron-doped High-Tc Superconductors

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    We present magnetotransport evidence for antiferromagnetism in films of the electron-doped cuprates Pr2x_{2-x}Cex_xCuO4_4. Our results show clear signature of static antiferromagnetism up to optimal doping x=0.15, with a quantum phase transition close to x=0.16, and a coexistence of static antiferromagnetism and superconductivity for 0.12\lex\le0.15

    The Information Content of the 1999 Announcement of Funds from Operations (FFO) Changes for Real Estate Investment Trusts

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    This study examines the market response to the 1999 announcement of a change in accounting for Funds from Operations (FFO) for Real Estate Investment Trusts (REITs). This change provides an increase in transparency in the accounting statements of REITs regarding the calculation of FFO. An analysis of this announcement finds that shareholder wealth increases but the significance of that increase is questionable. Additionally, an analysis of the adverse selection component of the bid-ask spread finds weak evidence to support the conjecture that the amount of information asymmetry in REIT prices declines after the announcement of the FFO accounting change.

    E-cigarette use among women of reproductive age: Impulsivity, cigarette smoking status, and other risk factors.

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    INTRODUCTION: The study aim was to examine impulsivity and other risk factors for e-cigarette use among women of reproductive age comparing current daily cigarette smokers to never cigarette smokers. Women of reproductive age are of special interest because of the additional risk that tobacco and nicotine use represents should they become pregnant. METHOD: Survey data were collected anonymously online using Amazon Mechanical Turk in 2014. Participants were 800 women ages 24-44years from the US. Half (n=400) reported current, daily smoking and half (n=400) reported smokingsociodemographics, tobacco/nicotine use, and impulsivity (i.e., delay discounting & Barratt Impulsiveness Scale). Predictors of smoking and e-cigarette use were examined using logistic regression. RESULTS: Daily cigarette smoking was associated with greater impulsivity, lower education, past illegal drug use, and White race/ethnicity. E-cigarette use in the overall sample was associated with being a cigarette smoker and greater education. E-cigarette use among current smokers was associated with increased nicotine dependence and quitting smoking; among never smokers it was associated with greater impulsivity and illegal drug use. E-cigarette use was associated with hookah use, and for never smokers only with use of cigars and other nicotine products. CONCLUSIONS: E-cigarette use among women of reproductive age varies by smoking status, with use among current smokers reflecting attempts to quit smoking whereas among non-smokers use may be a marker of a more impulsive repertoire that includes greater use of alternative tobacco products and illegal drugs

    Generalized Green'S Equivalences on the Subsemigroups of the Bicyclic Monoid

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    We study generalized Green's equivalences on all subsemigroups of the bicyclic monoid B and determine the abundant (and adequate) subsemigroups of B. © 2010 Copyright Taylor and Francis Group, LLC

    The Effect of Particle Strength on the Ballistic Resistance of Shear Thickening Fluids

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    The response of shear thickening fluids (STFs) under ballistic impact has received considerable attention due to its field-responsive nature. While efforts have primarily focused on the response of traditional ballistic fabrics impregnated with fluids, the response of pure STFs to penetration has received limited attention. In the present study, the ballistic response of pure STFs is investigated and the effect of fluid density and particle strength on ballistic performance is isolated. The loss of ballistic resistance of STFs at higher impact velocities is governed by particle strength, indicating the range of velocities over which they may provide effective armor solutions.Comment: 4 pages, 4 figure
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