Damping of Oscillations in Layer-by-Layer Growth

We present a theory for the damping of layer-by-layer growth oscillations in molecular beam epitaxy. The surface becomes rough on distances larger than a layer coherence length which is substantially larger than the diffusion length. The damping time can be calculated by a comparison of the competing roughening and smoothening mechanisms. The dependence on the growth conditions, temperature and deposition rate, is characterized by a power law. The theoretical results are confirmed by computer simulations.Comment: 19 pages, RevTex, 5 Postscript figures, needs psfig.st

yrGATE: a web-based gene-structure annotation tool for the identification and dissemination of eukaryotic genes

Your Gene structure Annotation Tool for Eukaryotes (yrGATE) provides an Annotation Tool and Community Utilities for worldwide web-based community genome and gene annotation. Annotators can evaluate gene structure evidence derived from multiple sources to create gene structure annotations. Administrators regulate the acceptance of annotations into published gene sets. yrGATE is designed to facilitate rapid and accurate annotation of emerging genomes as well as to confirm, refine, or correct currently published annotations. yrGATE is highly portable and supports different standard input and output formats. The yrGATE software and usage cases are available at

Pore Stabilization in Cohesive Granular Systems

Cohesive powders tend to form porous aggregates which can be compacted by applying an external pressure. This process is modelled using the Contact Dynamics method supplemented with a cohesion law and rolling friction. Starting with ballistic deposits of varying density, we investigate how the porosity of the compacted sample depends on the cohesion strength and the friction coefficients. This allows to explain different pore stabilization mechanisms. The final porosity depends on the cohesion force scaled by the external pressure and on the lateral distance between branches of the ballistic deposit r_capt. Even if cohesion is switched off, pores can be stabilized by Coulomb friction alone. This effect is weak for round particles, as long as the friction coefficient is smaller than 1. However, for nonspherical particles the effect is much stronger.Comment: 10 pages, 15 figure

Pulsed energy-time entangled twin-photon source for quantum communication

A pulsed source of energy-time entangled photon pairs pumped by a standard laser diode is proposed and demonstrated. The basic states can be distinguished by their time of arrival. This greatly simplifies the realization of 2-photon quantum cryptography, Bell state analyzers, quantum teleportation, dense coding, entanglement swapping, GHZ-states sources, etc. Moreover the entanglement is well protected during photon propagation in telecom optical fibers, opening the door to few-photon applications of quantum communication over long distances.Comment: 8 pages, 4 figure

xGDB: open-source computational infrastructure for the integrated evaluation and analysis of genome features

The eXtensible Genome Data Broker (xGDB) provides a software infrastructure consisting of integrated tools for the storage, display, and analysis of genome features in their genomic context. Common features include gene structure annotations, spliced alignments, mapping of repetitive sequence, and microarray probes, but the software supports inclusion of any property that can be associated with a genomic location. The xGDB distribution and user support utilities are available online at the xGDB project website, http://xgdb.sourceforge.net/

Tötungen durch Ersticken, Erdrosseln und Erwürgen aus dem Sektionsgut der Rechtsmedizin Münster 1993 - 1999

Es wurden 45 Fremdtötungen durch Erwürgen, Erdrosseln, Ersticken und Ertrinken aus dem Sektionsgut der Rechtsmedizin Münster von 1993 bis 1999 untersucht, dies waren 19% aller Homizide. Jeweils 17 Personen wurden erwürgt oder erdrosselt, 9 Personen wurden erstickt, 2 ertränkt. Ca. 50% der Opfer wurde zwischen 22 und 6 Uhr getötet. Über 70% der Opfer waren Frauen, meist zwischen 21 und 30 Jahre alt. Die Täter waren in 88% der Fälle männlich, meist zwischen 21 und 40 Jahre alt. Sie wiesen häufig ungünstige Sozialisationsbedingungen auf. Ca. 30% der Täter waren vorbestraft; über 50% wiesen seelische Störungen auf. Bei der Tatausführung waren 35% der Täter alkoholisiert. Die Tat geschah zu 57% im familiären Umfeld, hier war das Tatmotiv in 70% der Fälle Streit, extrafamiliär überwogen Raub- und Sexualmorde. Bei Erwürgten fanden sich häufiger als bei Erdrosselten Petechien im Kopfbereich und Blutungen in die Halsmuskulatur. Hyoid- und Larynxbrüche waren mit ca. 10% gleich häufig vertreten