Clinical Case of a Gastric Diverticulum Operated by Laparoscopic Approach

A gastric diverticulum is a rare disease, occurring in 0.04% of cases on contrast X-rays and 0.01-0.11% of cases of upper GI tract endoscopies. Diagnosis is often difficult due to non-specific symptoms, such as a feeling of fullness in the epigastrium after eating, dyspepsia, nausea and vomiting. In the case of symptomatic diverticulum, surgical treatment is indicated, where a priority is given to laparoscopic interventions. In the article, we present a case of a gastric diverticulum in a 37-year-old woman who was successfully operated laparoscopically

Electromechanical deformation and fracture of piezoelectric/ferroelectric materials

This review presents the progress and current status of the investigation on electromechanical deformation and fracture of piezoelectric/ferroelectric materials. An attempt is made to summarize a few fundamental aspects, which include electromechanical constitutive relations, piezoelectric micromechanics and electric fracture and fatigue, instead of describing all technological backgrounds, basic physics, experimental findings, and theoretical developments. A number of open questions and future prospective are presented. It is hoped that this review will encourage people to join the exploration of this important and interesting field.link_to_subscribed_fulltex