1. Otto-von-Guericke University; Universitaetsplatz 2 39106 Magdeburg Germany
2. Max Planck Institute for Dynamics of Complex Technical Systems; Sandtorstrasse 1 39106 Magdeburg Germany
3. KU Leuven; Bio- & Chemical Systems Technology; Reactor Engineering and Safety Section; Celestijnenlaan 200f - Box 2424 3001 Leuven Belgium