2,274 research outputs found
Kiri M. Crütmann'ile
No full textZech, Bernhard, 1681-1748, Saksi salanõunik ja ministerCrütmann, M., magisterTänukiri talle saadetud traktaadi ees
Zech tableaux as tools for sparse decoding
No full textWithin the framework of Groebner-free Solving, we introduce the notion of Zech tableau as a tool for producing a linear error locator polynomials for cyclic codes
A 16-ka delta O-18 record of lacustrine sugar biomarkers from the High Himalaya reflects Indian Summer Monsoon variability
No full textWe investigated a late glacial-Holocene lacustrine sediment archive located at 4,050 m a.s.l. in the small carbonate-free catchment of Lake Panch Pokhari, Helambu Himal, Nepal. A delta O-18 sugar biomarker record was established by applying novel compound-specific delta O-18 analysis of plant sugar biomarkers (Zech and Glaser in Rapid Commun Mass Spectrom 23:3522-3532, 2009). This method overcomes analytical challenges such as extraction and purification faced by previous methods aimed at using delta O-18 of aquatic cellulose as a paleoclimate proxy. The delta O-18 results for sugar biomarkers arabinose, xylose and fucose agree well and reveal a pronounced trend towards lower delta O-18 values during the deglaciation and the onset of the Bolling/Allerod interstadial. By contrast, the period of the Younger Dryas is characterized by higher delta O-18 values. The early Holocene again reveals lower delta O-18 values. We suggest that our lacustrine delta O-18 record reflects coupled hydrological and thermal control. It is strongly related to changes in the oxygen isotopic composition of paleo-precipitation and resembles the delta O-18 records of Asian speleothems. With respect to the 'amount effect,' the record is interpreted as reflecting the Indian Summer Monsoon intensity. The precipitation signal is, however, amplified in our record by evaporative O-18 enrichment that is controlled by the ratio of precipitation to evaporation. We suggest that our delta O-18 record reflects the variability of the Indian Summer Monsoon, which was strong during the Bolling/Allerod interstadial and early Holocene, but weak during the Younger Dryas stadial. This interpretation is corroborated by a pollen-based index for Lake Panch Pokhari that estimated the strength of the Indian Summer Monsoon versus the strength of the Westerlies. Millennial-scale synchronicity with the Greenland delta O-18 temperature records highlights the previously suggested strong teleconnections between the Asian Monsoon system and North Atlantic climate variability
Correction: A case of novel DYT6 dystonia variant with serious complications after deep brain stimulation therapy: a case report
No full textFollowing publication of the original article [1], the authors reported an error in author group. Author M. Zech should be affiliated to affiliations 6 and 7. The original article [1] has been updated
School Autonomy and Collaborative Governance as Constitutive Elements of Waldorf Schools
No full text
The Anthroposophic Understanding of History from the Point of View of Waldorf Education, Education Science, and History Teaching
No full textReconstructing lake evaporation history and the isotopic composition of precipitation by a coupled delta<sup>18</sup>O–delta<sup>2</sup>H biomarker approach
No full textOver the past decades, delta O-18 and delta H-2 analyses of lacustrine sediments became an invaluable tool in paleohydrology and paleolimnology for reconstructing the isotopic composition of past lake water and precipitation. However, based on delta O-18 or delta H-2 records alone, it can be challenging to distinguish between changes of the precipitation signal and changes caused by evaporation. Here we propose a coupled, delta O-18-delta H-2 biomarker approach that provides the possibility to disentangle between these two factors. The isotopic composition of long chain n-alkanes (n-C-33, n-C-27, n-C-31) were analyzed in order to establish a 16 ka Late Glacial and Holocene delta H-2 record for the sediment archive of Lake Panch Pokhari in High Himalaya, Nepal. The delta H-2(n-alkane) record generally corroborates a previously established delta O-18(sugar) record reporting on high values characterizing the deglaciation and the Older and the Younger Dryas, and low values characterizing the Bolling and the Allerod periods. Since the investigated n-alkane and sugar biomarkers are considered to be primarily of aquatic origin, they were used to reconstruct the isotopic composition of lake water. The reconstructed deuterium excess of lake water ranges from +57 parts per thousand to -85 parts per thousand and is shown to serve as proxy for the evaporation history of Lake Panch Pokhari. Lake desiccation during the deglaciation, the Older Dryas and the Younger Dryas is affirmed by a multi-proxy approach using the Hydrogen Index (HI) and the carbon to nitrogen ratio (C/N) as additional proxies for lake sediment organic matter mineralization. Furthermore, the coupled delta O-18 and delta H-2 approach allows disentangling the lake water isotopic enrichment from variations of the isotopic composition of precipitation. The reconstructed 16 delta O-18(precipitation) record of Lake Panch Pokhari is well in agreement with the delta O-18 records of Chinese speleothems and presumably reflects the Indian Summer Monsoon variability. (C) 2014 Elsevier B.V. All rights reserved.German Research Foundation [ZE 844/1-2
Charles Baudelaire: Die Blumen des Bösen. Deutsche Nachdichtung von Paul Zech – erstmals herausgegeben und eingeleitet von Mario Zanucchi. Würzburg: Ergon 2017 (Klassische Moderne [ISSN 1863-9585]. Hg. von Achim Aurnhammer, Werner Frick, Dieter Martin und Mathias Mayer. Bd. 33)
No full textI Fiori del male di Charles Baudelaire sono, citando Walter Benjamin, "das letzte Gedichtbuch von gesamteuropaischer Wirkung". In concomitanza con il centocinquantesimo della morte del poeta questa edizione pubblica una traduzione integrale finora inedita delle Fleurs du Mal ad opera del poeta espressionista tedesco Paul Zech (1881-1946). Una laboriosa indagine filologico-critica ha permesso di datare il manoscritto, attualmente conservato a Marbach, e di contestualizzarlo sulla base dei prestiti da traduzioni coeve. L'edizione critica, che riproduce in appendice anche altre versioni baudelaireane di Zech parimenti inedite, costituisce un contributo non solo allo studio dell'opera del poeta espressionista, ma anche alla ricostruzione del transfer letterario franco-tedesco nella Klassische Moderne
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