WorldCat Identities

Hufnagel, Lars

Works: 9 works in 14 publications in 2 languages and 62 library holdings
Roles: Other, Author, dgs
Publication Timeline
Most widely held works by Lars Hufnagel
Parallel distributed-memory particle methods for acquisition-rate segmentation and uncertainty quantifications of large fluorescence microscopy images by Yaser Afshar( )

2 editions published in 2016 in English and held by 19 WorldCat member libraries worldwide

Transport in Hamilton-Systemen von der Klassik zur Quantenmechanik by Lars Hufnagel( )

3 editions published in 2001 in German and held by 17 WorldCat member libraries worldwide

Mechanics of Growing Tissues: A Continuum Description Approach by Jonas M Ranft( )

2 editions published between 2012 and 2013 in English and held by 16 WorldCat member libraries worldwide

In this thesis, we investigate the collective organization of cells by cell division and cell death. The multicellular dynamics of growing tissues is influenced by mechanical conditions and can give rise to cell movements. We develop a continuum description of tissue dynamics, which describes the stress distribution and the cell flow field on large scales. Cell division and apoptosis introduce stress sources that, in general, are anisotropic. We show that the tissue effectively behaves as a viscoelastic fluid with a relaxation time set by the rates of division and apoptosis. If the tissue is confined in a fixed volume, it reaches a state in which division and apoptosis balance. In this state, cells undergo a diffusive motion driven by the stochasticity of division and apoptosis. We calculate the diffusion coefficient and compare our results concerning both diffusion and viscosity to simulations of multicellular systems. Introducing a second material component that accounts for the extracellular fluid, we show that a finite permeability of the tissue gives rise to additional mechanical effects. In the limit of long times, the mechanical response of the tissue to external perturbations is confined to a region of which the size depends on the ratio of tissue viscosity and cell-fluid friction. Last but not least, we study the propagation of an interface between two different cell populations within a tissue. We distinguish two different modes of propagation of the more proliferative population: a diffusive regime in which relative fluxes dominate the expansion, and a propulsive regime in which the proliferation gives rise to dominating convective flows
Transportin Hamilton-Systemen: Von der Klassik zur Quantenmechanik by Lars Hufnagel( )

1 edition published in 2001 in German and held by 3 WorldCat member libraries worldwide

This thesis deals with classical and quantum mechanical transport properties of low dimensional Hamiltonian systems that possess a mixed phase space. It is demonstrated that even in ideal situations when the phase-space structure is dominated by a single scaling, the long-time dynamics of chaotic trajectories is not dominated by this scaling. The quantum mechanical investigation of mixed systems leads to a new class of eigenfunctions and their existence is ascribed to the hierarchical structure of the phase space. Then conductance fluctuations of generic billiards are investigated. The origin of the recently observed and so far unexplained isolated resonances is revealed and a unified theory that solves the contradiction between fractal fluctuations and isolated resonances is developed. Further on
Cell cycle correlations in epithelial tissue morphogenesis by Justus Fuesers( )

1 edition published in 2013 in English and held by 2 WorldCat member libraries worldwide

Instantaneous isotropic volumetric imaging of fast biological processes by Nils Wagner( )

1 edition published in 2019 in English and held by 2 WorldCat member libraries worldwide

Kann man die Form eines Graphen hören? by Lars Hufnagel( Book )

1 edition published in 2001 in German and held by 1 WorldCat member library worldwide

Computational tools for 3D quantification of Drosophila embryos by David Christian Dreher( Book )

1 edition published in 2020 in English and held by 1 WorldCat member library worldwide

Elektrische Feldgradienten und lokale Zustandsdichten am Kernort von Lithium adsorbiert auf Metalloberflächen by Lars Hufnagel( )

2 editions published in 1998 in German and held by 1 WorldCat member library worldwide

Audience Level
Audience Level
  General Special  
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Associated Subjects