Double volume reflection of a proton beam by a sequence of two bent crystals

The doubling of the angle of beam deflection due to volume reflection of protons by a sequence of two bent silicon crystals was experimentally observed at the 400 GeV proton beam of the CERN SPS. A similar sequence of short bent crystals can be used as an efficient primary collimator for the Large Hadron Collider

Efficiency of the Operation of the Cogeneration Steam Turbine Plants at theVariable Heat and ElectricLoad Schedules

The urgency of the work is conditioned by the need to improvethe management methods of the operation modes of the power plant by creating software tools for predicting the performance of equipment when the conditions of its operation change. In this regard, the aim of the study is to carry out a detailed calculation research of such modes using uniquecomputational mathematical models based on the actual turbine power characteristics. Following tasks were set to achieve it: first, to calculate the limits of change for the main energy and economic indicators in real operating conditions on the example of the turbines T-50-130 of the Kirov CHP-4; secondly, to identify and describe the possible resources to increase the efficiency of the operation of the cogeneration turbine plants under conditions of variable heat and electric load schedules. The received results testifythat at today's prices for energy carriers, additional power generation by the thermal cycle of CHP plants is economically feasible during all day. The low economic efficiency of some common methods of generating peak power is shown, in particular, by changing the degree of opening the sliding grids in the low-pressure section. The proposed approach can be implemented and used to optimize the operation of CHP plants in the Russian wholesale electricity and capacity market. The results of the study make it possible to conclude that most steam turbine CHP plants have significant reserves for saving fuel and energy resources, which can be realizedby optimizing turbine operationmodes

VI форум детских хирургов россии (уроки и перспективы)

The VI Forum of Russian Pediatric Surgeons was held on the online platform on October 2324 and October 3031, 2020. A total of 1,719 specialists from 20 countries took part in the work for the forum, which is 2.8 times higher than the corresponding figure from 2019. The daily audience of registered speakers and listeners ranged from 835 to 1.027 people. During the four days forum, 74 speakers presented 84 reports. The Forum of Russian Pediatric Surgeons promotes the broad promotion of innovative ideas and technologies and integration of domestic specialists into the international professional space.VI Форум детских хирургов России состоялся на онлайн-платформе 2324 и 3031 октября 2020 г. В работе форума приняли участие 1719 специалистов из 20 стран, что в 2,8 раза превышает соответствующий показатель 2019 г. Ежедневная аудитория зарегистрированных докладчиков и слушателей варьировала от 835 до 1027 человек. За четыре дня форума 74 спикерами было представлено 84 доклада. Форум детских хирургов России способствует широкому продвижению инновационных идей и технологий, интеграции отечественных специалистов в международное профессиональное пространство