Access to metastable complex ion conductors via mechanosynthesis: Preparation, microstructure and conductivity of (Ba,Sr)LiF3 with inverse perovskite structure

Highly metastable Ba1−xSrxLiF3 (0 < x ≤ xmax ≈ 0.4) with an inverse perovskite structure analogous to that of BaLiF3 was synthesized by soft mechanical treatment of BaF2 and LiF together with SrF2 at ambient temperature. Ex as well as in situX-ray powder diffraction (XRPD) measurements show that heat treatment at 393 K initiates the decomposition of the mixed phase into BaLiF3, LiF and (Sr,Ba)F2. Structural details of the metastable compound (Ba,Sr)LiF3 were investigated by ultrafast 19F magic angle spinning (MAS) nuclear magnetic resonance (NMR) spectroscopy. Interestingly, five magnetically inequivalent F sites were identified which correspond to fluorine anions coordinated by a variable number of Ba and Sr cations, respectively. Details from XRPD and NMR spectroscopy are discussed with respect to the formation mechanisms and thermal stability of the as prepared fluorides. Impedance spectroscopy is used to characterize (long-range) ionic transport properties. Results are compared with those obtained recently on mechanosynthesized BaLiF3

Complex networks for climate model evaluation with application to statistical versus dynamical modeling of South American climate

Acknowledgments: This paper was developed within the scope of the IRTG 1740/TRP 2011/50151-0, funded by the DFG/FAPESP. Furthermore, this work has been financially supported by the Leibniz Society (project ECONS), and the Stordalen Foundation (JFD). For certain calculations, the software packages pyunicorn (Donges et al. 2013a) and igraph (Csa´rdi and Nepusz 2006) were used. The authors would like to thank Manoel F. Cardoso, Niklas Boers, and the reviewers for helpful comments on the manuscript. Open Access: This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.Peer reviewedPostprin

Open access at the University Library Duisburg-Essen: focus on medicine

The article first provides a brief overview of the overall university development of open access at the University of Duisburg-Essen (UDE). It then traces the increasing proportion of open access publications at the UDE, with a focus on the golden open access path and the administration of the publication fund. The special features of a medical faculty with a strong publishing capacity are taken into account, as are the latest developments in publishing memberships and the handling of publications by DEAL partner Wiley.Der Artikel liefert zunächst einen kurzen Überblick über die gesamt universitäre Entwicklung von Open Access an der Universität Duisburg-Essen (UDE). Daran anschließend wird der steigende Open-Access-Anteil bei den Publikationen an der UDE nachgezeichnet, mit Fokussierung auf den Goldenen Open-Access-Weg und die Verwaltung des Publikationsfonds. Die Besonderheiten einer publikationsstarken Medizinischen Fakultät werden ebenso berücksichtig wie die neuesten Entwicklungen bei den Verlagsmitgliedschaften und die Abwicklung von Veröffentlichungen bei dem DEAL-Partner Wiley

On-line post consumer package identification by NIR spectroscopy combined with a FuzzyARTMAP classifier in an industrial environment

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Adaptive resonance theory based neural network for supervised chemical pattern recognition (FuzzyARTMAP) .2. Classification of post-consumer plastics by remote NIR spectroscopy using an InGaAs diode array

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