1992 Mathematisches Institut Universitt at zu KK oln Weyertal 86-90 D{5000 KK oln 41 (Lindenthal) Germany Telefon (0221) 470{3937 Telex 8882291 unik d Telefax (0221) 470{5160 Abstract There are two concepts of duality in combinatorial geometry. A set theoretical one, generalizing the structure of two orthocomplementary vector spaces and a lattice theoretical concept of an adjoint, that mimics d...

Modeling the chemical effects of ship exhaust in the cloud-free marine boundary layer R. von Glasow, M. G. Lawrence, R. Sander, and P. J. Crutzen Max-Planck-Institut für Chemie, Atmospheric Chemistry Division, PO Box 3060, 55020 Mainz, Germany 2 Center for Atmospheric Sciences, Scripps Institution of Oceanography, University of California at San Diego, La Jolla, CA 92093-0221, USA now at Scripp...

Model study of multiphase DMS oxidation with a focus on halogens R. von Glasow and P. J. Crutzen Center for Atmospheric Sciences, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, 92093-0221, USA Atmospheric Chemistry Division, Max-Planck-Institut für Chemie, PO Box 3060, 55020 Mainz, Germany Received: 26 October 2003 – Accepted: 12 December 2003 – Publishe...

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We report the discovery of two very cold and massive molecular cloud cores in the region ISOSS J18364-0221. The object has been identified by a systematic search for very early evolutionary stages of high-mass stars using the 170μm ISOPHOT Serendipity Survey (ISOSS). Submm continuum and molecular line measurements reveal two compact cores within this region. The first core has a temperature of ...