This volume contains contributions from cooperative research activities in physics and chemistry and addresses heterogeneous systems like atoms and molecules in complex environments, dye molecules like the retinal chromophore in the protein box of the human eye, interacting atoms/molecules in the interlayer of adsorbed structures, nucleation and domain formation processes in magnetic and martensitic systems. The particular aim of the contributions is to deduce the connection between different grades of heterogeneity and to bridge the gap between chemicals and heterogeneity on the atomic scale, and the physics of macroscopically heterogeneous systems. Besides the diverse experimental tools employed in the investigations, accompanying theoretical investigations range from ab initio molecular dynamics studies of the microscopic systems to Monte-Carlo simulations of the larger-scale problems.Contents:Atoms and Molecules in Complex EnvironmentsNonmagnetic and Magnetic Clusters on SurfacesStructure and Dynamics of Thin Films on SurfacesKinetics and Dynamics of Heterogeneous Magnetic StructuresReadership: Physicists and chemists in atomic & molecular physics, physics & chemistry of dye molecules, cluster physics, magnetic heterostructures, physics of surface growth and domain patterns.Key Features:Several pharmacologic inhibitors of matrix metalloproteinases are presently available and many are being tested in clinical trials. An understanding of the role of proteinases in the normal and diseased brain is critical if these drugs are to be used wiselyContributions from leaders in the field of metalloproteinase biology including Sarah McFarlane, Dylan Edwards, Wee Yong, John Sandy, Diane Jaworski, Iain Campbell, Gary Rosenberg, Jasti Rao, Jeanine D'Armiento, Dieter Zimmerman, and Paul Gottschall