A guideline for analyzing circadian wheel-running behavior in rodents under different lighting conditions

Most behavioral experiments within circadian research are based on the analysis of locomotor activity. This paper introduces scientists to chronobiology by explaining the basic terminology used within the field. Furthermore, it aims to assist in designing, carrying out, and evaluating wheel-running experiments with rodents, particularly mice. Since light is an easily applicable stimulus that provokes strong effects on clock phase, the paper focuses on the application of different lighting conditions

Service fusion in mobile contexts

Service provision for mobile users poses several challenges for those managing enterprise information systems. Some of these are ubiquitous, for example, privacy and security. Others give rise to integration and interoperability issues. The agent paradigm, though offering potential in fixed networked scenarios, has not been seriously considered as a mechanism for incorporating mobile clients, primarily to their computational intractability on mobile devices. However, recent developments in agent and mobile computing technologies – both from a hardware and software perspective, have rendered the mobile phone a viable platform for agents. One implication of this is that agents now offer a viable platform for service delivery to mobile users. This chapter reflects on some of the pertinent issues necessary for this, including Agent Oriented Software Engineering (AOSE). The discussion is illuminated with a systematic description of EasyLife – a framework that harnesses the agent paradigm to construct and deliver services to mobile users.Science Foundation Irelan

Entwicklung eines Wurzelsymbiosesystems zum Testen von Umweltchemikalien auf ihre Wirkung in Boeden

Root symbiosis of legumes with symbiotic bacteria of the genus Rhizobium and with symbiotic fungi (vesicular-arbuscular mycorrhiza) have been established as sensitive bioindicators for soil environmental chemicals. For different plant species also different transfer rates for those substances have been found. Towards heavy metals (cadmium, lead, arsenite) the symbioses react very differentiated. As environmental chemicals chinoline, fluoranthene, phenanthrene und anthracene have been studied. (orig.)Die Wurzelsymbiosen von Leguminosen mit symbiotischen Bakterien (Rhizobium) und symbiotischen Pilzen (vesikulaer-arbuskulaere Mycorrhiza) wurden als empfindliche Bioindikatoren gegenueber bodenbelastenden Altstoffen nachgewiesen. Fuer verschiedene Kulturpflanzen wurden unterschiedliche Transferraten aus dem Boden in die Pflanzenmatrix nachgewiesen. Gegenueber Schwermetallen (Cadmium, Blei, Arsenit) reagieren die Symbiosen sehr unterschiedlich. Als Altstoffe wurden modellhaft Chinolin, Fluoranthen, Phenanthren und Anthrazen verwendet. (orig.)Available from TIB Hannover: RN 8908(92-087) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Umwelt, Naturschutz und Reaktorsicherheit, Bonn (Germany)DEGerman