Einfuhrung in die anorganische experimentalchemie von Otto Diels. Mit 145 abbildungen im text

Mode of access: Internet.

Vertraute Fremde? Jens Baggesens und H.C. Andersens Reisen durch Deutschland:Fremdheitswahrnehmung und ihre literarische Gestaltung in "Labyrinten" und "Skyggebilleder"

Jens Baggesen and H.C. Andersen are both aspiring young authors when they set out on their respective journeys to Germany. The literary accounts of their travels - Labyrinten and Skyggebilleder - show how the authors perceive a foreign country, which, despite having a culture closely linked to their own, still contains elements that strike them as being unfamiliar and even bizarre. Their curiosity towards the strange features they encounter is accompanied by a strong desire to reaffirm their own national and cultural identity, forever relying on the comfort of the familiar. When confronted with experiences of strangeness and unfamiliarity that threaten to alienate them, both authors develop similar literary strategies. The poetical programmes that both writers implicitly subscribe to are illustrated in the way they perceive strange and alien elements and are therefore fundamentally and intrinsically interlinked with their aesthetic convictions as writers.

[Review of] Eigler, Friederike, and Jens Kugele, eds. Heimat. At the Intersection of Memory and Space. Berlin: de Gruyter, 2012. 268 pp. $126.00 hardcover

Book review: Eigler, Friederike, and Jens Kugele, eds. Heimat. At the Intersection of Memory and Space. Berlin: de Gruyter, 2012. 268 pp. $126.00 hardcover.

Data compilation on the biological response to ocean acidification: environmental and experimental context of data sets and related literature

The exponential growth of studies on the biological response to ocean acidification over the last few decades has generated a large amount of data. To facilitate data comparison, a data compilation hosted at the data publisher PANGAEA was initiated in 2008 and is updated on a regular basis (doi:10.1594/PANGAEA.149999). By January 2015, a total of 581 data sets (over 4 000 000 data points) from 539 papers had been archived. Here we present the developments of this data compilation five years since its first description by Nisumaa et al. (2010). Most of study sites from which data archived are still in the Northern Hemisphere and the number of archived data from studies from the Southern Hemisphere and polar oceans are still relatively low. Data from 60 studies that investigated the response of a mix of organisms or natural communities were all added after 2010, indicating a welcomed shift from the study of individual organisms to communities and ecosystems. The initial imbalance of considerably more data archived on calcification and primary production than on other processes has improved. There is also a clear tendency towards more data archived from multifactorial studies after 2010. For easier and more effective access to ocean acidification data, the ocean acidification community is strongly encouraged to contribute to the data archiving effort, and help develop standard vocabularies describing the variables and define best practices for archiving ocean acidification data.

Primary data sets of the hydrographic atlas of the Southern Ocean

The general knowledge of the hydrographic structure of the Southern Ocean is still rather incomplete since observations particularly in the ice covered regions are cumbersome to be carried out. But we know from the available information that thermohaline processes have large amplitudes and cover a wide range of scales in this part of the world ocean. The modification of water masses around Antarctica have indeed a worldwide impact, these processes ultimately determine the cold state of the present climate in the world ocean. We have converted efforts of the German and Russian polar research institutions to collect and validate the presently available temperature, salinity and oxygen data of the ocean south of 30°S latitude. We have carried out this work in spite of the fact that the hydrographic programme of the World Ocean Circulation Experiment (WOCE) will provide more new information in due time, but its contribution to the high latitudes of the Southern Ocean is quite sparse. The modified picture of the hydrographic structure of the Southern Ocean presented in this atlas may serve the oceanographic community in many ways and help to unravel the role of this ocean in the global climate system. This atlas could only be prepared with the altruistic assistance of many colleagues from various institutions worldwide who have provided us with their data and their advice. Their generous help is gratefully acknowledged. During two years scientists from the Arctic and Antarctic Research Institute in St. Petersburg and the Alfred Wegener Institute for Polar and Marine Research in Bremerhaven have cooperated in a fruitful way to establish the atlas and the archive of about 38749 validated hydrographic stations. We hope that both sources of information will be widely applied for future ocean studies and will serve as a reference state for global change considerations.

GUERICKE '15 : forschen + vernetzen + anwenden ; das Forschungsjournal der Otto-von-Guericke-Universität Magdeburg

[s.c.]

Duales Studium Berufsbildung : Erfahrungen mit der Kooperation zwischen der Otto-von-Guericke-Universität Magdeburg und der Siemens AG

Klaus Jenewein

Alex Aßmann / Jens Oliver Krüger (Hrsg.): Ironie in der Pädagogik. Theoretische und empirische Studien zur pädagogischen Bedeutsamkeit der Ironie. Weinheim: Juventa 2011 [Rezension]

Rezension von: Alex Aßmann / Jens Oliver Krüger (Hrsg.): Ironie in der Pädagogik. Theoretische und empirische Studien zur pädagogischen Bedeutsamkeit der Ironie. Weinheim: Juventa 2011 (224 S.; ISBN 978-3-7799-2242-1)

Frei Otto et René Sarger: entre idéaux d’architecte et vérité d’ingénieur

À travers leurs premiers écrits des années 50 et 60, Frei Otto, architecte et ingénieur allemand (1925-2015), et René Sarger (1917-1988), architecte français, n’expriment pas seulement une passion partagée des toitures suspendues. Partant du même souci d’une forme structurale « juste », leurs convictions radicales révèlent aussi les premiers questionnements des nouveaux rôles de l’ingénieur et de l’architecte de l’époque, mais aussi des idéaux opposés concernant leur position comme concepteurs et auteurs du monde bâti, ainsi que l’importance sociétale de leurs disciplines.

Jens Oliver Krüger: Pädagogische Ironie – Ironische Pädagogik, Diskursanalytische Untersuchungen. Paderborn: Schöningh 2011 [Rezension]

Rezension von: Jens Oliver Krüger: Pädagogische Ironie – Ironische Pädagogik, Diskursanalytische Untersuchungen, Paderborn: Schöningh 2011 (227 S.; ISBN 978-3-506-77062-2)

Quantum Otto heat engine based on a multiferroic chain working substance

We study a quantum Otto engine operating on the basis of a helical spin-1/2 multiferroic chain with strongly coupled magnetic and ferroelectric order parameters. The presence of a finite spin chirality in the working substance enables steering of the cycle by an external electric field that couples to the electric polarization. We observe a direct connection between the chirality, the entanglement and the efficiency of the engine. An electric-field dependent threshold temperature is identified, above which the pair correlations in the system, as quantified by the thermal entanglement, diminish. In contrast to the pair correlations, the collective many-body thermal entanglement is less sensitive to the electric field, and in the high temperature limit converges to a constant value. We also discuss the correlations between the threshold temperature of the pair entanglement, the spin chirality and the minimum of the fidelities in relation to the electric and magnetic fields. The efficiency of the quantum Otto cycle shows a saturation plateau with increasing electric field amplitude.