Amorphous gallium films (thickness -9 nm) have been prepared by evaporation onto alow-temperaturesubstrate invacuum. Znsituopticalmeasurementsfrom0.5 to4.5 eV are analysed using Drude theory and produce a figure of 0.9 nm for the electron mean free path.Electrical measurements confirm the presence of the amorphous phase, and the results are consistent with earlier measurements on thick gallium films.
We report ten successful experiments of transvenous destruction of the His bundle by laser radiation. An endoscope coupled with a special laser catheter was introduced through the jugular vein into the right atrium of dogs. The tip of the laser catheter was positioned in front of A-V conduction system under visual control using anatomic landmarks. Injection of saline solution coaxial with the laser power-transmitting fiber was performed before and during laser coagulation. Twenty watts constant wave Nd-YAG laser operating at 1.06 micron was enough to produce complete A-V block in approximately 15 sec. The safety of the proposed technique is especially discussed.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.