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Porphyrin ‘‘Mille-Feuilles” photo-electrodes

A porphyrin ‘‘Mille-Feuilles” photo-electrode is fabricated layer-by-layer by deposition of anionic [zinc meso-tetrakis(p-sulfonato phenyl) porphyrin] (ZnTPPS ) and positively charged polypeptides on a 11-mercaptoundecanoic acid-modified gold electrode to form a photoactive film. This work demonstrates that it is possible to form 3D structures having regularly spaced layers of redox molecules. ...

The raison d'être of chemical ecology.

Chemical ecology is a mechanistic approach to understanding the causes and consequences of species interactions, distribution, abundance, and diversity. The promise of chemical ecology stems from its potential to provide causal mechanisms that further our understanding of ecological interactions and allow us to more effectively manipulate managed systems. Founded on the notion that all organism...

Asynchronous Rendez-vous in Distributed Logic Programming

In this paper the semantics of the communication mechanism of the distributed logic programming language DLP is studied. DLP combines logic programming with object oriented features and parallelism. For an abstract subset of DLP both an operational and denotational semantics is given. The language DLP supports active objects, method call by rendezvous and moreover (distributed) backtracking ove...

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Resurrecting Ada's Rendez-Vous in Java

Java is a programming language designed with concurrency in mind from its inception. However, the synchronization mechanism provided is a restricted version of Hoare’s Monitors, being too low level for most applications. In this paper we propose a high level synchronization mechanism for Java, based on Ada’s Rendez-Vous, adapting the notation and semantics to Java. The result is a nice and read...