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Speaker: Dr. Miwa Takahashi, CERC Postdoctoral Fellow, Environomics Future Science Platform, NCMI | CSIRO
Hosted by: Professor Timothy Ravasi, OIST Marine Climate Change Unit
Abstract: Environmental DNA (eDNA) has emerged as a powerful monitoring tool for species detection and distribution mapping, with a remarkable surge in activity over the past decade. Metabarcoding studies have generated millions of DNA sequences with taxonomic assignments, while species-specific eDNA assays have produced comprehensive distribution maps for hundreds of taxa. (...)
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Speaker: Dr. Shreyas Mandre
University Associate Professor of Fluid-Structure Interaction, Department of Engineering, University of Cambridge
Hosted by: Professor Mahesh Bandi, Nonlinear and Non-equilibrium Physics Unit
When physical processes repeat over either growing or shrinking scales (length and/or time), the dynamics shows self-similarity. The condition of self-similarity appears strict, but it is the building block of mathematical modelling. This lecture covers (i) concept of scale invariance as a pre-requisite for self-similarity, (ii) self-similarity in physical systems and mathematical models, (iii) the two kinds of self-similarity -- the first and second kinds, and (iv) a simple mathematical example to elucidate the second kind of self-similarity. The lecture presents examples from fluid dynamics. No previous knowledge of or experience with scale-invariance or self-similarity is assumed.
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PhD Thesis Public Presentation
Sachie Yukawa
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3D printed complex microoptics: Fundamentals and first benchmark applications - come learn how to "print" optical elements!
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Speaker: Professor Luiza Angheluta-Bauer, Condensed Matter Physics, University of Oslo
Hosted by Professor Mahesh Bandi Nonlinear and Non-equilibrium Physics Unit
Abstract:
Collective structural arrangements and cell migration are important physical processes underlying tissue development and regeneration. Understanding the complexity of cell-cell interactions and the emergence of collective behaviors at the tissue scale presents formidable challenges both experimentally and theoretically.
In this talk, I will discuss recent theoretical work on the dynamical patterns that emerge at the tissue scale from localized rearrangements and topological defects. Using a multi-phase field model, we demonstrate that tissue fluidity stems from cell neighbor exchanges, serving as transient sources of vortical flow. This flow emerges from the relative dispersion of cells at a rate proportional to the frequency of rearrangements. Balancing collective migration with relative cell motion appears to be essential for maintaining tissue shape and fluidity. Using a cell-based model, we study the tissue's response to the presence of a vortex. While solid-like behavior tends toward conical shapes, localized fluidization triggers the transition to a tube, which is fundamental in biological tissues.
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Prof. Dr. Myung Hee Kim
Korea Research Institute of Bioscience and Biotechnology
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Nov 21 - Dec 01 Laurin Ostermann (Senior Scientist, University of Innsbruck, Austria)
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Nov 21 - Dec 08 Karol Gietka (Postdoc, University of Innsbruck, Austria)
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Nov 20 - Nov 24 Lewis Ruks (Postdoc, NTT Basic Research Labs)
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Visit of Prof. Gediminas Juzeliūnas, Professor, Vilnius University, Lithuania