EFL university students' perceptions about cross-cultural presentations videoconferencing.

This study aims to examine EFL university students' perceptions about cross-cultural videoconferencing presentations for professors in the United States. Nineteen Taiwanese English-as-foreign-language university students who studied in a night program for a bachelor's degree attended the study. Each of them was free to choose a topic related to Taiwanese cultures and individually made a 25-min presentation plus a five-minute question-and-answer session.

Inducibility of abnormal automaticity and triggered activity in myocardial sleeves of canine pulmonary veins.

Background: To study the cellular mechanisms governing cardiac atrial arrhythmias initiated by ectopic focus (or foci) from pulmonary veins (PVs).

Methods: In the present in vitro study, we applied the conventional microelectrode technique to record intracellular action potentials in PV sleeves from dogs.

Results: In 80 normal healthy dogs, all action potentials recorded in cardiomyocytes from PV sleeves were fast-response.