4,279 research outputs found

    The Last Full Measure of Devotion : The Battle of Gettysburg and the New Museum in Schmucker Hall

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    Schmucker Hall offers an unprecedented opportunity to interpret the role of religion in the Civil War and the American expenment in democracy. In particular it can give palpable expression to major themes in Abraham Lincoln\u27s Gettysburg Address concerning the battle itself, the conflict as a time of testing, the sacrifices of those who fought here, and the hope these sacrifices bring to the young nation for a new birth of freedom. Built in 1832 and named for an abolitionist and founder of Gettysburg Seminary, Samuel Simon Schmucker, it is the original structure on the oldest continuously-operating Lutheran seminary in the United States, and many say it IS the most significant Civil War building in America still in private hands. Thus, Gettysburg Seminary has a place and it has a man to interpret significant aspects of the Civil War in ways that no other museum, including a government agency such as the National Park Service (NPS), can do. [excerpt

    Evolution of transport properties of BaFe2-xRuxAs2 in a wide range of isovalent Ru substitution

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    The effects of isovalent Ru substitution at the Fe sites of BaFe2-xRuxAs2 are investigated by measuring resistivity and Hall coefficient on high-quality single crystals in a wide range of doping (0 < x < 1.4). Ru substitution weakens the antiferromagnetic (AFM) order, inducing superconductivity for relatively high doping level of 0.4 < x < 0.9. Near the AFM phase boundary, the transport properties show non-Fermi-liquid-like behaviors with a linear-temperature dependence of resistivity and a strong temperature dependence of Hall coefficient with a sign change. Upon higher doping, however, both of them recover conventional Fermi-liquid behaviors. Strong doping dependence of Hall coefficient together with a small magnetoresistance suggest that the anomalous transport properties can be explained in terms of anisotropic charge carrier scattering due to interband AFM fluctuations rather than a conventional multi-band scenario.Comment: 7 pages, 6 figures, submitted to Phys. Rev.

    Somatosensory Deficits in Post-ACL Reconstruction Patients: A Case-Control Study

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    Introduction: Diminished cutaneous detection thresholds have been identified in patients with multiple orthopedic conditions, and these phenomena may occur in postanterior cruciate ligament reconstructed (ACLR) patients. The purpose of this study was to determine if differences in lower extremity cutaneous detection thresholds exist in post-ACLR patients when compared with healthy controls. Methods: Fifteen individuals who were post-ACLR and 15 individuals who had no history of knee injury participated. Light touch cutaneous detection thresholds were assessed at 4 locations on the foot and ankle (first metatarsal, fifth metatarsal, medial malleolus, and lateral malleolus). Nonparametric statistics examined group differences between the sites. Results: ACLR subjects had decreased cutaneous sensation at the first metatarsal and medial malleolus compared with healthy controls. Conclusions: Somatosensory deficits are present in post-ACLR patients. Future research should investigate these phenomena longitudinally in post-ACLR individuals along with somatosensory targeted interventions

    Electronic and phononic properties of the chalcopyrite CuGaS2

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    The availability of ab initio electronic calculations and the concomitant techniques for deriving the corresponding lattice dynamics have been profusely used for calculating thermodynamic and vibrational properties of semiconductors, as well as their dependence on isotopic masses. The latter have been compared with experimental data for elemental and binary semiconductors with different isotopic compositions. Here we present theoretical and experimental data for several vibronic and thermodynamic properties of CuGa2, a canonical ternary semiconductor of the chalcopyrite family. Among these properties are the lattice parameters, the phonon dispersion relations and densities of states (projected on the Cu, Ga, and S constituents), the specific heat and the volume thermal expansion coefficient. The calculations were performed with the ABINIT and VASP codes within the LDA approximation for exchange and correlation and the results are compared with data obtained on samples with the natural isotope composition for Cu, Ga and S, as well as for isotope enriched samples.Comment: 9 pages, 8 Figures, submitted to Phys. Rev
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