2 articles published in JoVE
Autonomous and Rechargeable Microneurostimulator Endoscopically Implantable into the Submucosa Jan Hajer*1,2, Marek Novák*3 12nd Department of Internal Medicine, Third Faculty of Medicine, Charles University, Prague, Czech Republic, 22nd Department of Internal Medicine, University Hospital Královské Vinohrady, Prague, Czech Republic, 3Czech Technical University in Prague, Czech Republic The application of high-frequency low-energetic stimulation can alleviate the symptoms of gastric dysmotility. In this research, a miniature, endoscopically implantable and wirelessly rechargeable device which is implanted into a submucosal pocket is presented. Successful both-way communication and stimulation control were achieved during an experiment on live pig.
Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses Marcel B. Miglierini1,2, Vít Procházka3, Vlastimil Vrba3, Peter Švec4, Dušan Janičkovič4, Peter Matúš5 1Institute of Nuclear and Physical Engineering, Slovak University of Technology in Bratislava, Slovakia, 2Department of Nuclear Reactors, Czech Technical University in Prague, Czech Republic, 3Department of Experimental Physics, Palacky University Olomouc, Czech Republic, 4Institute of Physics, Slovak Academy of Sciences, Bratislava, Slovakia, 5Institute of Laboratory Research on Geomaterials, Faculty of Natural Sciences, Comenius University in Bratislava, Slovakia Here, we present a protocol to describe ex situ and in situ investigations of structural transformations in metallic glasses. We employed nuclear-based analytical methods which inspect hyperfine interactions. We demonstrate the applicability of Mössbauer spectrometry and nuclear forward scattering of synchrotron radiation during temperature-driven experiments.