1. Department of Chemical Engineering, Thermal and Flow Engineering Laboratory, Åbo Akademi University, Piispankatu 8, FI-20500, Turku, Finland,
2. Saint-Gobain Weber, Kalkkitehtaantie, FI-21600, Parainen, Finland.
3. Tel-Tek, department POSTEC, Kjølnes ring 30, N-3918, Porsgrunn, Norway.
4. Faculty of Mathematics and Natural Sciences, Department of Physics and Astronomy, Laboratory of Industrial Physics, University of Turku, FI-20014, Turku, Finland.