Introduction to focus issue: dynamics in systems biology

The methods of nonlinear systems form an extensive toolbox for the study of biology, and systems biology provides a rich source of motivation for the development of new mathematical techniques and the furthering of understanding of dynamical systems. This Focus Issue collects together a large variety of work which highlights the complementary nature of these two fields, showing what each has to offer the other. While a wide range of subjects is covered, the papers often have common themes such as "rhythms and oscillations," "networks and graph theory," and "switches and decision making." There is a particular emphasis on the links between experimental data and modeling and mathematical analysis.     

Spezielle Strukturbaufehler in gasdotierten Silizium-einkristallen und deren mögliche Wirkung bei der Herstellung von pn-Übergängen

Investigation and identification of special imperfections of silicon single crystals prepared by gas doping and zone floating are reported. Investigation methods used are etch technique, X-ray topography and electron beam micro-analysis. It was stated that the investigated imperfections show oxygen clusters. A possible growth process of such imperfections is discussed. In conclusion, first results of investigations on the effects of such imperfections during the formation of p–n junctions are given.     

First Journal of Organometallic Chemistry Conference

Anläßlich des 75. Geburtstags von Ernst Otto Fischer fand in München am 4. und 5. November die “First Journal of Organometallic Chemistry Conference” statt. Ein hochkarätiges Vortragsprogramm und über 170 Posterpräsentationen boten einen Überblick über aktuelle Forschungsthemen der metallorganischen Chemie.