160 research outputs found

    Transnational geography and identity through translation and distribution in Germany, Spain and Latin America

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    During the 1930s through the 1940s and into the 1950s, Spanish and German presentations in opposition to ardent nationalism share strikingly common aesthetic and ideological strategies supporting claims to a transnational, international space. Specific examples of common geography, identity and language in German and Spanish presentations (theater, short stories, reports, essays, speeches and poetry) in Spain and Latin America by German (Regler, Renn, Uhse), Spanish (J. Bergamin, R. Alberti, M. Aub) and Latin American (D. Rivera, P. Neruda, C. Vallejo) intellectuals, artists and activists during the 1930s through the 1950s will be explored. For example, German-speaking audiences and artists in Spain and Mexico shared a common lived and aesthetic space as Spanish-speaking audiences and artists. Further, many German presentations were translated into Spanish and visa versa. Here, presentations in “Das Wort” and “El Mono Azul” in Spain as well as “Freies Deutschland/Alemania libre” in Mexico will be referenced in developing a sense of re-definition of the concept of ‘foreign’ and ‘commonness’ beyond simply nationality (tradition, history and geography) and language. The impetus for an alternative, international and even revolutionary ‘space’ (as defined by Henri Lefebvre in The Production of Space) was produced in and through common Spanish and German strategies and realizations in their presentations. This Spanish-German example from the early/mid-part of the 20th century is a significant contribution to contemporary interdisciplinary discussions in the 21st century

    Comment on "Surprises in threshold antikaon-nucleon physics"

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    It has recently been claimed by Oller et al. [PRL 95 (2005) 172502] that the DEAR kaonic hydrogen data can be reconciled with K^- p scattering data in a chiral unitary approach. In this comment we demonstrate that the proposed solution violates fundamental principles of scattering theory.Comment: 1 page, 1 figur

    Improving Plant Economy Through Retrofit And Maintenance Of Compressors.

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    LecturePg. 103-112Retrofits on compressors can become attractive if the operating requirements of a plant change. Often, compressor modifications are imposed by process changes due to market demands or new process technologies. Sometimes, the rising costs of energy, equipment and labor have spurred the search for ways to reduce the cost of operation of a plant. A number of possibilities for improving economy of operation through retrofits are pointed out. All of the stated possibilities and examples have been actually carried out in one way or another. The intent of this presentation is to provide awareness for operating engineers of the possibilities for improving operating economy of their own plants. The methods of how investigations of retrofit projects are conducted and which aspects must be considered are also shown

    Investigation of the membrane localization and distribution of flavonoids by high-resolution magic angle spinning NMR spectroscopy

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    AbstractTo investigate the structural basis for the antioxidative effects of plant flavonoids on the lipid molecules of cellular membranes, we have studied the location and distribution of five different flavonoid molecules (flavone, chrysin, luteolin, myricetin, and luteolin-7-glucoside) with varying polarity in monounsaturated model membranes. The investigated molecules differed in the number of hydroxyl groups attached to the polyphenolic benzo-Îł-pyrone compounds. To investigate the relation between hydrophobicity and membrane localization/orientation, we have applied 1H magic angle spinning NMR techniques measuring ring current induced chemical shift changes, nuclear Overhauser enhancement cross-relaxation rates, and lateral diffusion coefficients. All investigated flavonoids show a broad distribution along the membrane normal with a maximum in the lipid/water interface. With increasing number of hydroxyl groups, the maximum of this distribution is biased towards the lipid headgroups. These results are confirmed by pulsed field gradient NMR measurements of the lateral diffusion coefficients of phospholipids and flavonoids, respectively. From the localization of different flavonoid protons in the membrane, a model for the orientation of the molecules in a lipid bilayer can be deduced. This orientation depends on the position of the polar center of the flavonoid molecule

    Mitmachen erwĂŒnscht - aktivierende Lehre mit Peer Instruction und Just-in-Time Teaching

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    In der Hochschullehre gibt es aktuell verschiedene Herausforderungen: Wie geht man mit den heterogenen fachlichen Voraussetzungen der Studierenden um, wie können Studierende besser aktiviert werden und wie kann das Feedback zwischen Dozierenden und Studierenden verbessert werden? Um diesen Anforderungen Rechnung zu tragen, wurde in einer Analysis-Veranstaltung eine Kombination der Methoden Peer Instruction und Just-in-Time Teaching eingesetzt und evaluiert. Die Ergebnisse zeigen, dass die Methoden zu einer stĂ€rkeren Aktivierung der Studierenden beitragen und verschiedene Möglichkeiten fĂŒr formatives Feedback bieten. Eine hohe Akzeptanz der Methoden kann ebenfalls festgestellt werden. 10.11.2014 | Kathrin Wolf, Antje Nissler, Edda Eich-Soellner & Rainer Fischer (MĂŒnchen

    Integrating Heterogeneous Odor Response Data into a Common Response Model: A DoOR to the Complete Olfactome

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    We have developed a new computational framework for merging odor response data sets from heterogeneous studies, creating a consensus metadatabase, the database of odor responses (DoOR). As a result, we obtained a functional atlas of all available odor responses in Drosophila melanogaster. Both the program and the data set are freely accessible and downloadable on the Internet (http://neuro.uni-konstanz.de/DoOR). The procedure can be adapted to other species, thus creating a family of “olfactomes” in the near future. Drosophila melanogaster was chosen because of all species this one is closest to having the complete olfactome characterized, with the highest number of deorphanized receptors available. The database guarantees long-term stability (by offering time-stamped, downloadable versions), up-to-date accuracy (by including new data sets as soon as they are published), and portability (for other species). We hope that this comprehensive repository of odor response profiles will be useful to the olfactory community and to computational neuroscientists alike

    The LRU Rover for Autonomous Planetary Exploration and its Success in the SpaceBotCamp Challenge

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    The task of planetary exploration poses many challenges for a robot system, from weight and size constraints to sensors and actuators suitable for extraterrestrial environment conditions. As there is a significant communication delay to other planets, the efficient operation of a robot system requires a high level of autonomy. In this work, we present the Light Weight Rover Unit (LRU), a small and agile rover prototype that we designed for the challenges of planetary exploration. Its locomotion system with individually steered wheels allows for high maneuverability in rough terrain and the application of stereo cameras as its main sensor ensures the applicability to space missions. We implemented software components for self-localization in GPS-denied environments, environment mapping, object search and localization and for the autonomous pickup and assembly of objects with its arm. Additional high-level mission control components facilitate both autonomous behavior and remote monitoring of the system state over a delayed communication link. We successfully demonstrated the autonomous capabilities of our LRU at the SpaceBotCamp challenge, a national robotics contest with focus on autonomous planetary exploration. A robot had to autonomously explore a moon-like rough-terrain environment, locate and collect two objects and assemble them after transport to a third object - which the LRU did on its first try, in half of the time and fully autonomous
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