Zobrazeno 1 - 10
of 960
pro vyhledávání: '"A. S. Sergeev"'
Publikováno v:
Креативная хирургия и онкология, Vol 7, Iss 1, Pp 4-10 (2017)
The paper studies the issues of aortic stenosis etiology and pathogenesis, clinical assessment of severity based on the distinct symptoms of decompensated aortic defect and echocardiographic measures, and modern methods of aortic stenosis correction.
Externí odkaz:
https://doaj.org/article/b00c65afaab34a64b8a9551eca0f399f
Autor:
A. I. Nikitin, V. P. Ramzaev, V. M. Osokin, A. S. Sergeev, A. V. Sevastyanov, R. A. Aliev, G. B. Artem’ev, G. Ya. Bruk, P. S. Vaganov, E. N. Vekhov, A. Yu. Vyakhirev, I. N. Titov, A. V. Fedorova, I. Yu. Fillipov
Publikováno v:
Радиационная гигиена, Vol 4, Iss 3, Pp 14-35 (2015)
In the period from April 22 until May 20, 2011, an expedition aboard the research vessel “Pavel Gordienko” (Russian Federation) was carried out to the Sea of Japan and the Kuril-Kamchatka region of the Pacific Ocean. The main aim of the expeditio
Externí odkaz:
https://doaj.org/article/fa494e025b804668a31a087c6a7c7cb8
Autor:
A. Yu. Popova, V. A. Safronov, N. F. Magasuba, D. V. Utkin, G. N. Odinokov, O. V. P’Yankov, A. S. Sergeev, S. A. Bodnev, A. S. Kabanov, V. E. Kuklev, A. A. Lopatin, A. S. Razdorsky, K. A. Nikiforov, S. A. Shcherbakova, V. A. Ternovoy, A. P. Agafonov, V. N. Mikheev, V. V. Kutyrev
Publikováno v:
Проблемы особо опасных инфекций, Vol 0, Iss 4, Pp 5-8 (2014)
Given is an account of the EVD epidemics that started in the Republic of Guinea in December, 2013 and spread over West African countries within 2014. Established have been the grounds for the Rospotrebnadzor SAET deployment in the Republic of Guinea,
Externí odkaz:
https://doaj.org/article/4ddc2240ec394cb7b1f616e5aa57c38d
Autor:
N. S. Ginzburg, E. V. Ilyakov, I. S. Kulagin, A. M. Malkin, N. Yu. Peskov, A. S. Sergeev, V. Yu. Zaslavsky
Publikováno v:
Physical Review Accelerators and Beams, Vol 21, Iss 8, p 080701 (2018)
Based on a quasioptical approach and direct particle-in-cell simulations, we study dynamics of oversized relativistic surface-wave oscillators (SWOs) of the Cherenkov type with 2D periodical corrugated structures of cylindrical geometry. Such corruga
Externí odkaz:
https://doaj.org/article/a466b96e2a34497598c555fa7d3fefce
Autor:
N. S. Ginzburg, E. V. Ilyakov, I. S. Kulagin, N. Yu. Peskov, R. M. Rozental, A. S. Sergeev, V. Yu. Zaslavsky, I. V. Zheleznov
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 18, Iss 12, p 120701 (2015)
A coaxial Ka-band backward wave oscillator with a two-dimensional Bragg structure located at the output of the interaction space has been studied. This structure has a double-period corrugation and provides azimuthal electromagnetic energy fluxes, wh
Externí odkaz:
https://doaj.org/article/47b0d2a735c040c189489c11da8ac4de
Autor:
N. S. Ginzburg, I. I. Golubev, A. K. Kaminsky, A. P. Kozlov, S. V. Kuzikov, E. A. Perelstein, N. Yu. Peskov, M. I. Petelin, S. N. Sedykh, A. P. Sergeev, A. S. Sergeev, A. A. Vikharev, N. I. Zaitsev
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 14, Iss 4, p 041002 (2011)
Experiments to investigate copper surface fatigue caused by pulsed rf radiation were carried out using the 30 GHz free electron maser. The copper surface of a special test cavity was exposed to 15–20 MW/150–200 ns rf pulses with a repetition rate
Externí odkaz:
https://doaj.org/article/f9f56f37445244bc8e71273f4d8aeb6f
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 14, Iss 4, p 042001 (2011)
For the electron devices with oversized interaction space, the Bragg structures of different types are effective instruments for controlling and redistribution of the electromagnetic energy fluxes to provide a spatial coherence of radiation. In this
Externí odkaz:
https://doaj.org/article/cb6f8bb1b14a47a69934495437959c8f
Autor:
N. S. Ginzburg, A. M. Malkin, N. Yu. Peskov, A. S. Sergeev, A. K. Kaminsky, S. N. Sedykh, E. A. Perelshtein, A. P. Sergeev, A. V. Elzhov
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 8, Iss 4, p 040705 (2005)
A novel scheme of the Bragg free-electron maser (free-electron laser) [FEM (FEL)] based on the coupling of an amplified propagating wave with a quasicutoff mode trapped inside the cavity is considered. The cutoff mode is essential for FEM self-excita
Externí odkaz:
https://doaj.org/article/09b01c0b0fcd4d60b42dbe8fae6c1af0
Publikováno v:
Высшее образование в России, Vol 30, Iss 5, Pp 44-64 (2021)
The pandemic period revealed the shortcomings of distance learning, which do not allow it to be used as a basic form of education in the main educational programs. The most effective form of organizing the educational process, in the context of its d
Externí odkaz:
https://doaj.org/article/6643fda475f14e3d80b5d6488e36a06f
Publikováno v:
IEEE Transactions on Electron Devices. 70:2161-2164