[This is the old program from SS 2006. The current program and contact information can be found here.]

28 April 2006, 16:00

Dorothea Busse (Institut für Biologie, Humboldt-Universität zu Berlin)
Spatio-temporal dynamics of cell signalling [Abstract]

19 May 2006, 16:00

Karsten Reuter (Abteilung Theorie, Fritz-Haber-Institut der MPG, Berlin)
First-principles statistical mechanics approaches to heterogeneous catalysis [Abstract]

02 June 2006, 16:00

Blas Echebarría (Departament de Física Aplicada, Universitat Politècnica de Catalunya, Barcelona, Spain)
Instabilities of scroll waves in excitable media [Abstract]

23 June 2006, 16:00

Hermann Riecke (Department of Engineering Sciences and Applied Mathematics, Northwestern University, Evanston, USA)
Spatio-temporal chaos in convection: defects, bursts, and spirals [Abstract]

14 July 2006, 16:00

Martin Baurmann (Institut für Chemie und Biologie des Meeres, Carl-von-Ossietzky-Universität Oldenburg)
Pattern formation in microbiogeochemical models

Abstract:
In general, the distributions of nutrients and microorganisms in sediments show complex spatio-temporal patterns, which often cannot be explained as resulting exclusively from the temporal fluctuations of environmental conditions and the inhomogeneity of the studied sediment's material. To discuss how pattern formation can affect these distributions, we study the dynamics of a simple reaction-diffusion system on a vertical two-dimensional domain. In particular we are interested in the evolution of spatio-temporal patterns in the neighborhood of a Turing-Hopf bifurcation. We present the structures that arise and study their dependency on depth-dependent forcing. As an outlook, we will present some modifications of the model and will show that by these modifications forms of pattern formation, different from the classical Turing-mechanism, can be obtained.