Many fundamental processes in chemistry and biology occur on extremely short time scales inaccessible by conventional analytical methods. Here we show how femtosecond transient absorption spectroscopy reveals intimate details of key molecular processes such as electron or energy transfer. We describe in detail experimental set-up and discuss various parameters necessary to obtain desired information. Application of the method is demonstrated on peridinin-chlorophyll protein from marine photosynthetic organisms, in which we follow dynamics of energy transfer between carotenoids and chlorophylls., Petr Hříbek, Marcel Fuciman, Pavel Chábera, Tomáš Polívka., and Obsahuje bibliografii
Gyrodactylus pisculentus sp. n. is described from the head, body and fins of the northern pipefish, Syngnathus fuscus Storer (Syngnathidae) from the environs of Woods Hole, Massachusetts, USA. The new species is compared with Gyrodactylus shorti and Gyrodactylus syngnathi, species previously recorded from pipefish in the United States and Norway, respectively. Gyrodactylus pisculentus was frequently associated with mortality of northern pipefish held in quarantine at the Woods Hole Science Aquarium during 2002-2005. The clinical account of the infections and treatment protocols are presented.