Molecular epidemiology of an outbreak of febrile gastroenteritis caused by Listeria mococytogenes in cold-smoked rainbow trout

Febrile gastroenteritis in five healthy persons was associated with the consumption of vacuum-packed cold-smoked rainbow trout containing Listeria monocytogenes. L. monocytogenes isolates from the incriminated fish product lot and the stool samples were all of serotype 1/2a and were indistinguishable by pulsed-field gel electrophoresis employing AscI and SmaI

Animation of User Algorithms on the Web

An algorithm animation environment called Jeliot is presented. Jeliot allows a Web user to visualize his own algorithms, written in Java, over the Internet. Jeliot is based on self-animation of data types: the user selects the data objects of the source code which he wants to visualize, and Jeliot produces the animation automatically. 1 Introduction Recently, educationalists have paid much attention to the World-Wide Web as a learning environment [13]. Although the idea of an almost unlimited learning space seems most attractive, the learning outcomes easily remain poor: the Web pages are often used as advertisements or attractions; at most, they include material through which the student browses, with no active intention. The same applies also to Computer Science education. To be effective, a learning environment must be linked to the learner's current problem. This is seldom the case: even the interaction between the user and the Web pages is limited to the given hyperlinks. The re..