Background : the method of endoscopic submucosal dissection (ESD) allows to remove large neoplasms GI tract enblock, which significantly reduces risk local tumor recurrence. However, ESD is technically complicated with high surgical complications. Aim modify traction technique and evaluate its efficiency. Materials methods: experimental comparative study on biological preparations (pig stomachs...

In this paper, lead free (K0.48,Na0.52)NbO3 (KNN(48-52)) piezoelectric ceramics were made by conventional solid state sintering process. Additives of nano ZnO (n-ZnO), nano CuO (n-CuO) and nano SnO2 (n-SnO2) were used in order to decrease the sintering temperature, as well as modifying the dielectric, piezoelectric and ferroelectric propert...

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1 France Telecom R&D, 2 Avenue Pierre-Marzin 22307 Lannion Cedex France, [email protected] 2 LaMI umr 8042 CNRS, Université d’Évry Val d’Essonne Tour Evry 2 / 4ème étage, 523 Place des terrasses de l’Agora, 91000 Évry France, [email protected] 3 CEA-Saclay, Laboratoire ”Logiciel pour la Sûreté des Procédés”, DRT/LIST/DTSI/SLA, F-91191 GIF sur Yvette Cedex France, alain...