Background.Prolonged operation of shut-off valves of main gas pipelines leads to gradual wear of the sealing elements of ball valves and valves and a violation of their tightness.Timely detection of leakage of the shut-off valves at an early stage allows you to keep the equipment in working condition and avoid the consequences caused by large volum
Since the launch of the Eastern Partnership and up to the latest Summit, in May 2015, notable progress has been registered within the framework in various areas, especially in issues related to climate change, environment and energy.Nevertheless, significant environmental problems still linger and require urgent tailor-made solutions.The paper seek
Abstract Background Right-sided infective endocarditis is uncommon.This is primarily seen in patients with intravenous drug use, pacemaker or central venous lines, or congenital heart disease.The vast majority of cases involve the tricuspid valve.Isolated pulmonary valve endocarditis is extremely rare.We report the first case of a pulmonary valve n