2003-11-24 FJ.004 The granular Leidenfrost phenomenon: density inversion in vibrofluidized granular matter Detlef Lohse, Peter Eshuis, Devaraj van der Meer, Ko van der Weele (University of Twente) FJ.005 Hydrodynamic interactions of a granular chain in a fluid. Ben Bammes, Jeffrey S. Olafsen (Department of Physics amp; Astronomy, University of Kansas) FJ.006 Spontaneous Ratchet Effect in a Granular Gas Devaraj van der Meer (University of Twente, the Netherlands), Peter Reimann (University of Bielefeld, Germany), Ko van der Weele, Detlef Lohse (University of Twente, the Netherlands)