High-statistics measurement of the pion form factor in the rho-meson energy range with the CMD-2 detector

We present a measurement of the pion form factor based on e+e- annihilation data from the CMD-2 detector in the energy range 0.6<sqrt(s)<1.0 GeV with a systematic uncertainty of 0.8%. A data sample is five times larger than that used in our previous measurement.Comment: 18 pages, 10 figures. Added comparison with KLOE measurement, minor updates. Accepted by PL

Study of the Process e+e−→KL0KS0e^+e^- \to K^0_L K^0_S in the C.M.Energy Range 1.05-1.38 GeV with CMD-2

The process $e^+e^- \to K^0_L K^0_S$ has been studied with the CMD-2 detector using about 950 events detected in the center-of-mass energy range from 1.05 to 1.38 GeV. The cross section exceeds the expectation based on the contributions of the rho(770), omega(782) and phi(1020) mesons only.Comment: 12 pages, 3 figures, uses elsart.cls, submitted to Physics Letters

Study of the Process e+ e- --> omega pi0 --> pi0 pi0 gamma in c.m. Energy Range 920--1380 MeV at CMD-2

The cross section of the process e+ e- --> omega pi0 --> pi0 pi0 gamma has been measured in the c.m. energy range 920-1380 MeV with the CMD-2 detector. Its energy dependence is well described by the interference of the rho(770) and rho'(1450) mesons decaying to omega pi0. Upper limits for the cross sections of the direct processes e+ e- --> pi0 pi0 gamma, eta pi0 gamma have been set.Comment: Accepted for publication in PL

Recent Advances in Understanding Particle Acceleration Processes in Solar Flares

We review basic theoretical concepts in particle acceleration, with particular emphasis on processes likely to occur in regions of magnetic reconnection. Several new developments are discussed, including detailed studies of reconnection in three-dimensional magnetic field configurations (e.g., current sheets, collapsing traps, separatrix regions) and stochastic acceleration in a turbulent environment. Fluid, test-particle, and particle-in-cell approaches are used and results compared. While these studies show considerable promise in accounting for the various observational manifestations of solar flares, they are limited by a number of factors, mostly relating to available computational power. Not the least of these issues is the need to explicitly incorporate the electrodynamic feedback of the accelerated particles themselves on the environment in which they are accelerated. A brief prognosis for future advancement is offered.Comment: This is a chapter in a monograph on the physics of solar flares, inspired by RHESSI observations. The individual articles are to appear in Space Science Reviews (2011

Study of the Process e+ e- --> pi0 pi0 gamma in c.m. Energy Range 600--970 MeV at CMD-2

The cross section of the process e+ e- --> pi0 pi0 gamma has been measured in the c.m. energy range 600--970 MeV with the CMD-2 detector. The following branching ratios have been determined: B(rho --> pi0 pi0 gamma) =(5.2^{+1.5}_{-1.3} +- 0.6)x10^{-5} and B(omega --> pi0 pi0 gamma) =(6.4^{+2.4}_{-2.0} +- 0.8)x10^{-5}. Evidence for the rho --> f0(600) gamma decay has been obtained: B(rho --> f0(600) gamma) = (6.0^{+3.3}_{-2.7}\pm 0.9)x10^{-5}. From a search for the process e+ e- --> eta pi0 gamma the following upper limit has been obtained: B(omega --> eta pi0 gamma) < 3.3 10^{-5} at 90% CL.Comment: 15 pages, 4 figure

Measurement of e+e- -> pi+pi- cross section with CMD-2 around rho-meson

The cross section of the process e+e- -> pi+pi- has been measured using about 114000 events collected by the CMD-2 detector at the VEPP-2M e+e- collider in the center-of-mass energy range from 0.61 to 0.96 GeV. Results of the pion form factor determination with a 0.6% systematic uncertainty are presented. Implications for the hadronic contribution to the muon anomalous magnetic moment are discussed.Comment: 17 pages, 4 figures, submitted to PL

Детская хирургия: история и современность (V Форум детских хирургов России)

The work summarizes the V Forum of pediatric surgeons of Russia, held in Ufa, September 3–5, 2019. For the first time, the annual largest scientific event of domestic pediatric surgeons was held outside the capital. The Forum was attended by over 600 delegates, including specialists from 10 foreign countries and representatives of all federal districts of the Russian Federation. The scientific program of the Forum was represented by symposia (14), round tables (4), the video session “How I Do It,” master classes (2) and a competition of young scientists. A workshop was held on topical issues of pediatric surgery. The report contains brief results of the analysis of the organization of the Forum and the scientific content of the reports.В работе подведены итоги V Форума детских хирургов России, прошедшего в г. Уфе c 3 по 5 сентября 2019 года. Впервые ежегодное самое крупное научное событие отечественных детских хирургов было проведено вне столицы. На Форуме присутствовало свыше 600 делегатов, включая специалистов из 10 зарубежных стран и представителей всех федеральных округов РФ. Научная программа Форума была представлена симпозиумами (14), круглыми столами (4), видеосессией «Как я это делаю», мастер-классами (2) и конкурсом молодых ученых. Было проведено рабочее совещание по актуальным проблемам детской хирургии. На сообщении были проведены краткие результаты анализа организации Форума и научного содержания докладов

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

Studies of a Microwave Radiometer Based on Integrated Circuits

Microwave thermometry provides noninvasive detection of thermal inhomogeneity in biological tissues, early diagnosis of oncological diseases, and correction of treatment based on changes in the parameters of the body’s electromagnetic radiation. We present an analytical review of developments in medical radiometers. Challenges hindering the development of radiometry are identified, as are proposed solutions. © 2020, Springer Science+Business Media, LLC, part of Springer Nature