A system using a radioactive 137 Cs source to calibrate and monitor the Hadron Calorimeter (TileCal) of the ATLAS experiment at the LHC is described. The system includes a set of sensors to monitor the position of the source which moves via hydraulic propulsion. The design of the sensors, the corresponding electronic modules and their performance are… (More)
This paper discusses the relationships of zonal vegetation boundaries with some climatic indicators. Possible changes in subzonal vegetation boundaries in the territory of European Russia and Western Siberia are forecasted within the framework of one of the global warming scenarios. The revealed regularities make it possible to suggest a mathematical… (More)
The steppe marmot disappeared from the modern Penza region at the end of the 19th century. The history of the disappearance of the marmot and the results of its reintroduction in 1985–1989 are considered in the article. The characteristics of the modern state of the marmot settlements that formed as a result of the reintroduction are given.