Shell correction in Bohr stopping theory

Second-harmonic cross-correlation operates a selection in time-phase among the randomly de-phased contributions to an optical field that propagated through a scattering medium. It can thus be used to selectively detect the weak contribution remaining coherent with the incident field. Received 7 May 1999     

Darstellung und Konstitution des Histidins

Ohne Zusammenfassung     

Buchbesprechungen

Ohne Zusammenfassung

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Book reviews

     

Über die Spaltungsproducte des Eiweisses bei der Verdauung

Ohne ZusammenfassungMit Unterstützung der k. Akademie in Wien ausgeführt.     

Adaptive dynamics and evolutionary stability

A dynamics for frequency dependent selection is proposed and applied to several biological examples. The relation with game dynamics and evolutionary stability is analyzed.     

Topology optimization of microfluidic mixers

This paper demonstrates the application of the topology optimization method as a general and systematic approach for microfluidic mixer design. The mixing process is modeled as convection dominated transport in low Reynolds number incompressible flow. The mixer performance is maximized by altering the layout of flow/non‐flow regions subject to a constraint on the pressure drop between inlet and outlet. For a square cross‐sectioned pipe the mixing is increased by 70% compared with a straight pipe at the cost of a 2.5 fold increase in pressure drop. Another example where only the bottom profile of the channel is a design domain results in intricate herring bone patterns that confirm findings from the literature. Copyright © 2008 John Wiley & Sons, Ltd.     

A short tale of two cities: Otto schreier and the Hamburg— Vienna connection

This column is a forum for discussion of mathematical communities throughout the world, and through all time. Our definition of “mathematical community” is the broadest. We include “schools” of mathematics, circles of correspondence, mathematical societies, student organizations, and informal communities of cardinality greater than one. What we say about the communities is just as unrestricted. We welcome contributions from mathematicians of all kinds and in all places, and also from scientists, historians, anthropologists, and others.     

Über die Spaltungsproducte des Eiweißes bei der Verdauung

Ohne Zusammenfassung     

Über das Verhalten von Aldehydacetalen bei der Hydrierung

Ohne ZusammenfassungHerrn Prof. Dr. A. Franke, dem Vorstand des analytischen Universitätslaboratoriums, fühlen wir uns für das Interesse und die wertvolle Unterstützung, die er dieser Arbeit angedeihen ließ, zu großem Dank verpflichtet.