Judith Braun Videos
deutsche Opernsängerin und Musikpädagogin
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2024-05-04
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George Enescu Rosanne Philippens Yuka Tsuboi Akasaka Haefliger Swiss Chamber Soloists 1881 1900 1955
GEORGE ENESCU +••.••(...)) Octet for strings in C major op. 7 (1900) SWISS CHAMBER SOLOISTS VIOLIN Rosanne Philippens, Irene Abrigo, Ronny Spiegel, Yuka Tsuboi VIOLA Jürg Dähler, Tomoko Akasaka CELLO Daniel Haefliger, Sebastian Braun Recorded live on November 27 in Kirche St Peter, Zurich www.swisschamberconcerts.ch
Domenico Scarlatti Rosanne Philippens Stainer Swiss Chamber Soloists 1685 1757 1850
DOMENICO SCARLATTI +••.••(...)) Sonata K.27 00:00 Sonata K.87 04:00 Sonata K.1 11:29 Sonata K.247 18:50 Arranged for string trio by Jürg Dähler SWISS CHAMBER SOLOISTS VIOLIN Rosanne Philippens VIOLA Jürg Dähler CELLO Sebastian Braun Performed on historical instruments by Jacobus Stainer Recorded live on November 27 in Kirche St Peter, Zurich www.swisschamberconcerts.ch
Guillamat Prost Marchetti Toyama Kawaguchi Kageyama Sacks Shani Blanch Kruse Topology 1995 2013 2015 2017 2020 2021
This talk was part of the of the online workshop on "Interdisciplinary Challenges in Nonequilibrium Physics" held April 12 - 16, 2021. Discontinuities within orientational fields configure topological defects [1]. They are often present in materials featuring orientational, nematic, order, and can be found in very diverse areas, which span a vast range of length scales [2]. Interestingly, in active nematic systems, topological defects imply not only strong orientational gradients but also well-defined flow and stress patterns in very localized regions [3]. Recent works have shown the influence of these defects in determining the dynamics of living systems, from cell monolayers [4–6] to simple organisms [7]. Here, we study how nematic monolayers composed of muscle cells self-organize and evolve under circular confinement, which enforces a topological charge S=+1. Under strong confinements, with size competing with the characteristic nematic correlation length, the formation of half-integer defects (s=±1/2) is hampered, resulting in spontaneous cellular arrangements with one single integer defect (s=+1) at the center of the islands, namely, rotating spirals and quasi-static asters [8]. These singularities imply distinct mechanical fields, which lead, eventually, to the localized expression of muscle-specific proteins and the formation of 3D nematic cellular protrusions [9]. [1] P. G. de Gennes and J. Prost, The Physics of Liquid Crystals (Clarendon Press, 1995). [2] M. C. Marchetti, J. F. Joanny, S. Ramaswamy, T. B. Liverpool, J. Prost, M. Rao, and R. A. Simha, Hydrodynamics of Soft Active Matter, Rev. Mod. Phys. 85, 1143 (2013). [3] L. Giomi, Geometry and Topology of Turbulence in Active Nematics, Phys. Rev. X 5, 031003 (2015). [4] G. Duclos, C. Erlenkamper, J.-F. Joanny, and P. Silberzan, Topological Defects in Confined Populations of Spindle-Shaped Cells, Nat Phys 13, 58 (2017). [5] T. B. Saw, A. Doostmohammadi, V. Nier, L. Kocgozlu, S. Thampi, Y. Toyama, P. Marcq, C. T. Lim, J. M. Yeomans, and B. Ladoux, Topological Defects in Epithelia Govern Cell Death and Extrusion, Nature 544, 212 (2017). [6] K. Kawaguchi, R. Kageyama, and M. Sano, Topological Defects Control Collective Dynamics in Neural Progenitor Cell Cultures, Nature 545, 327 (2017). [7] Y. Maroudas-Sacks, L. Garion, L. Shani-Zerbib, A. Livshits, E. Braun, and K. Keren, Topological Defects in the Nematic Order of Actin Fibres as Organization Centres of Hydra Morphogenesis, Nat. Phys. (2020). [8] C. Blanch-Mercader, P. Guillamat, A. Roux, and K. Kruse, Quantifying Material Properties of Cell Monolayers by Analyzing Integer Topological Defects, Phys. Rev. Lett. 126, 028101 (2021). [9] P. Guillamat, C. Blanch-Mercader, K. Kruse, and A. Roux, Integer Topological Defects Organize Stresses Driving Tissue Morphogenesis, BioRxiv 2020.06.02.129262 (2020).
Schumann Grümmer Hinze 1707 1936
Schumann - Träumerei. Prof. Paul Grümmer, cello "gespielt auf einer Stradivarius von 1707" mit Klavierbegleitung: Bruno Hinze-Reinhold ("Steinway"-Flügel) Шуман - Грёзы. Проф. Пауль Грюммер, виолончель "играл на Страдивари 1707 года" в сопровождении фортепиано: Бруно Хинце-Рейнхольд (фортепиано "Steinway"). Polydor, 47059B, 10'', 78 rpm, 1936 Braun PS 500.
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