170,908 research outputs found
Thementisch: "Wer wir sind" (Jan C. Behrends)
No full textAm Thementisch "Wer wir sind" wird der Historiker Jan C. Behrends mit seinen Tischgästen die deutsch-russischen Beziehungen nicht nur auf politischer, sondern auch auf sozialer und kultureller Ebene diskutieren: Die Frage, ob Russland ein Teil Europas, eine eigene Welt, eine eurasische oder asiatische Macht ist, ist so alt wie der moderne russische Staat. Seit Peter I. wird darüber gestritten, in welchem Verhältnis der alte Kontinent und die Großmacht im Osten zueinander stehen. Spannend ist ..
Visum repertum über den Leichnam des seligen Herrn Hofraths Senckenberg des Stifters des Bürgerhospitals
No full textHandschriftlicher Leichenschaubericht über den verunglückten Johann Christian Senckenberg: 18.11.1772. Unterzeichnet von den Ärzten: Behrends, I. A. ; Krisner, I.C. ; Müller, F. S. ; Giese, J. G. ; Behrends, J. C. ; Jonas, A. I. G. ; Meyer, C. F. ; Bucher, J. L. ; Grasemann, Ch. F
Author Correction: A prospective observational study of post-COVID-19 chronic fatigue syndrome following the first pandemic wave in Germany and biomarkers associated with symptom severity (Nature Communications, (2022), 13, 1, (5104), 10.1038/s41467-022-3
No full textIn the author list of this article, the names of the authorswere incorrectly listed with initials and family name only. The incorrect author list read as “C. Kedor, H. Freitag, L. Meyer-Arndt, K. Wittke, L. G. Hanitsch, T. Zoller, F. Steinbeis, M. Haffke, G. Rudolf, B. Heidecker, T. Bobbert, J. Spranger, H. D. Volk, C. Skurk, F. Konietschke, F. Paul, U. Behrends, J. Bellmann-Strobl and C. Scheibenbogen”. The author list has now been amended to include the given and family names in the HTML and PDF versions of the article. The corrected author list reads as “Claudia Kedor, Helma Freitag, Lil Meyer-Arndt, Kirsten Wittke, Leif G. Hanitsch, Thomas Zoller, Fridolin Steinbeis, Milan Haffke, Gordon Rudolf, Bettina Heidecker, Thomas Bobbert, Joachim Spranger, Hans- Dieter Volk, Carsten Skurk, Frank Konietschke, Friedemann Paul, Uta Behrends, Judith Bellmann-Strobl and Carmen Scheibenbogen”
Jan C. Behrends, Die erfundene Freundschaft
No full textL’amitié ne se commande pas. Certes, il n’est pas facile de s’empêcher de cultiver des relations utiles. Mais qu’il est difficile de se convaincre qu’elles ont quelque chose en commun avec une intimité cordiale ! Jan Behrends entraîne le lecteur dans une cuisine singulière. On y fait de grands efforts pour concocter une amitié entre des peuples qui ne voulaient pas en entendre parler. En effet, il ne fallait pas manquer d’imagination pour inventer une fraternité éternelle entre Soviétiques, P..
Races to Modernity: Metropolitan Aspirations in Eastern Europe, 1890–1940. An Introduction
No full textstatus: Publishe
Autophagosome content profiling using proximity biotinylation proteomics coupled to protease digestion in mammalian cells
No full textThe ascorbate peroxidase APEX2 is commonly used to study the neighborhood of a protein of interest by proximity-dependent biotinylation. Here, we describe a protocol for sample processing compatible with immunoblotting and mass spectrometry that is suitable to specifically map the content of autophagosomes and potentially other short-lived endomembrane transport vesicles without the need of subcellular fractionation. By combining live-cell biotinylation with proteinase K digestion of cell homogenates, proteins enriched in membrane-protected compartments can be readily enriched and identified.
For complete details on the use and execution of this protocol, please refer to (Zellner et al., 2021)
Molecular dynamics and conformational kinetics of mono- and disaccharides in aqueous solution
No full textAcoustical attenuation spectra between 10 kHz and 2 GHz, complex dielectric spectra between 300 kHz and 40 GHz, and time-resolved non-equilibrium measurements are reported for aqueous solutions of various mono- and disaccharides with and without 2:1 valent salts. The spectra reveal a variety of relaxation regimes with relaxation times between 1 mu s and 10 ps. In addition, the time-resolved observations enable the study of the mutarotation with relaxation times on the order of 10(3) s. Variation of the concentration and temperature as well as a careful choice of the saccharides allow a discussion of the relaxation processes in terms of a chair-chair ring inversion, two modes of pseudorotation, an exocyclic hydroxymethyl group rotation, a carbohydrate-carbohydrate association, and, in the disaccharide solutions, a rotation of the rings relative to another. Salt-containing solutions show also relaxation phenomena reflecting different steps cation-carbohydrate association and variations in the carbohydrate conformational isomerizations and associations due to interactions with cations
Diktatur: Moderne Gewaltherrschaft zwischen Leviathan und Behemoth (Version 1.0)
No full text(Version 1.0, siehe auch Version 2.0) Der Begriff Diktatur stammt aus dem römischen Staatsrecht, wo er die temporäre Herrschaft eines Diktators bezeichnete, der zur Verteidigung der Republik über dem Gesetz stand. Diese klassische Bedeutung wurde im 20. Jahrhundert vielfach überformt; der moderne Diktaturbegriff entstand als Eigen- und Fremdbezeichnung für die kommunistische, faschistische und nationalsozialistische Herrschaft. Der Artikel unseres Autoren Jan C. Behrends rekonstruiert die Geschichte des Begriffs im 20. Jahrhundert mit einem Schwerpunkt auf den russischen und deutschen Fall und blickt abschließend auf die zeithistorische Forschung der Gegenwart
High-Frequency Shear Viscosity of Low-Viscosity Liquids
No full textA thickness shear quartz resonator technique is described to measure the shear viscosity of low-viscosity liquids in the frequency range from 6 MHz to 130 MHz. Examples of shear-viscosity spectra in that frequency range are presented to show that various molecular processes are accompanied by shear-viscosity relaxation. Among these processes are conformational variations of alkyl chains, with relaxation times tau(eta) of about 0.3 ns for n-pentadecane and n-hexadecane at 25 degrees C. These variations can be well represented in terms of a torsional oscillator model. Also featured briefly are shear-viscosity relaxations associated with fluctuations of hydrogen-bonded clusters in alcohols, for which tau(eta) values between 0.3 ns (n-hexanol) and 1.5 ns (n-dodecanol) have been found at 25 degrees C. In addition, the special suitability of high-frequency shear-viscosity spectroscopy to the study of critically demixing mixtures is demonstrated by some illustrative examples. Due to slowing, critical fluctuations do not contribute to the shear viscosity at sufficiently high frequencies of measurements so that the non-critical background viscosity eta(bg) of critical systems can be directly determined from high-frequency shear-viscosity spectroscopy. Relaxations in eta(bg) appear also in the shear-viscosity spectra with, for example, tau(eta) approximate to 2 ns for the critical triethylamine-water binary mixture at temperatures between 10 degrees C and 18 degrees C. Such relaxations noticeably influence the relaxation rate of order parameter fluctuations. They may be also the reason for the need of a special mesoscopic viscosity when mutual diffusion coefficients of critical polymer solutions are discussed in terms of mode-coupling theory
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