Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Vladimir, Tsvetkov"'
Publikováno v:
Photonics, Vol 10, Iss 12, p 1389 (2023)
The output spectral, temporal, and spatial parameters of a two-channel Yb-fiber laser operating in an incoherent intracavity spectral beam-combining mode were investigated. One of the laser channels operated in continuous pumping mode, and the second
Externí odkaz:
https://doaj.org/article/faf0fdd1abc84a2181c26a7df45e70bd
Publikováno v:
Materials, Vol 16, Iss 21, p 6829 (2023)
Yttrium scandate crystals doped by Nd3+ and Tm3+ ions have been successfully grown in the form of fibers using the laser-heated pedestal growth (LHPG) technique. The selective laser spectroscopy methods have identified and distinguished three distinc
Externí odkaz:
https://doaj.org/article/290f2dd28cf94960a45d727023cca938
Autor:
Galina Bufetova, Alexey Kosolapov, Mikhail Yashkov, Andrey Umnikov, Vladimir Velmiskin, Vladimir Tsvetkov, Igor Bufetov
Publikováno v:
Photonics, Vol 10, Iss 3, p 335 (2023)
The core refractive index n2 of silica-based optical fiber preform heated to 2000 °C was determined experimentally for the first time. The measurements were carried out in the process of preform temperature reduction. It was shown that n2 could incr
Externí odkaz:
https://doaj.org/article/755863eecfc549f890220e2fc98aa60b
Structural and Spectroscopic Features of the Bixbyite-Type Yttrium Scandate Doped by Rare-Earth Ions
Autor:
Elena Dobretsova, Olimkhon Alimov, Denis Guryev, Valery Voronov, Sergey Rusanov, Vitaly Kashin, Sergey Kutovoy, Viktor Vlasov, Lubov Badyanova, Ivan Novikov, Vladimir Tsvetkov
Publikováno v:
Crystals, Vol 12, Iss 12, p 1745 (2022)
Yttrium scandate crystal fiber has been obtained through laser-heated pedestal growth. The crystal belongs to a bixbyite crystal structure and crystallizes in Ia3¯ space group. X-ray diffraction method shows a lattice parameter of a = 10.228(1) Å.
Externí odkaz:
https://doaj.org/article/481bdfea181f40249666b39430586a6b
Autor:
Julia Svetlova, Ekaterina Knizhnik, Valentin Manuvera, Vyacheslav Severov, Dmitriy Shirokov, Ekaterina Grafskaia, Pavel Bobrovsky, Elena Matyugina, Anastasia Khandazhinskaya, Liubov Kozlovskaya, Nataliya Miropolskaya, Andrey Aralov, Yuri Khodarovich, Vladimir Tsvetkov, Sergey Kochetkov, Vassili Lazarev, Anna Varizhuk
Publikováno v:
International Journal of Molecular Sciences, Vol 23, Iss 23, p 15281 (2022)
The life cycle of severe acute respiratory syndrome coronavirus 2 includes several steps that are supposedly mediated by liquid–liquid phase separation (LLPS) of the viral nucleocapsid protein (N) and genomic RNA. To facilitate the rational design
Externí odkaz:
https://doaj.org/article/5cdcef7386f24d11bf46f5df37ccfbf2
Autor:
Vadim Zhmykhov, Elena Dobretsova, Vladimir S. Tsvetkov, Marina Nikova, Irina Chikulina, Dmitry Vakalov, Vitaly Tarala, Yurii Pyrkov, Sergey Kuznetsov, Vladimir Tsvetkov
Publikováno v:
Inorganics, Vol 10, Iss 10, p 170 (2022)
The Er1.5Y1.5Al5O12 (Er:YAG) and (Er1.43Y1.43Sc0.14)(Sc0.24Al1.76)Al3O12 (Er:YSAG) ceramics have been characterized using the Judd-Ofelt (JO) theory. The line strengths and oscillator strengths of several transitions from the ground state 4I15/2 to e
Externí odkaz:
https://doaj.org/article/85589b7b2b7840c387e5989d981c5d2b
Autor:
Viacheslav Severov, Vladimir Tsvetkov, Nikolay Barinov, Vladislav Babenko, Dmitry Klinov, Galina Pozmogova
Publikováno v:
Polymers, Vol 14, Iss 10, p 2118 (2022)
We report the spontaneous formation of DNA-DNA junctions in solution in the absence of proteins visualised using atomic force microscopy. The synapsis position fits with potential G-quadruplex (G4) sites. In contrast to the Holliday structure, these
Externí odkaz:
https://doaj.org/article/ec5c1e5bfb094746bd5a78b0b03bb2bb
Autor:
Iuliia Pavlova, Nikolay Barinov, Roman Novikov, Vjacheslav Severov, Mikhail Iudin, Tatiana Vedekhina, Andrey Larin, Vladislav Babenko, Andrey Aralov, Evgeny Gnuchikh, Makar Sardushkin, Dmitry Klinov, Vladimir Tsvetkov, Anna Varizhuk
Publikováno v:
Biochimie. 204:8-21
G-quadruplexes (G4s) are gaining increasing attention as possible regulators of chromatin packaging, and robust approaches to their studies in pseudo-native context are much needed. Here, we designed a simple in vitro model of G4-prone genomic DNA an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53b40e35658bf6ba942ecf400231998d
https://doi.org/10.1016/j.biochi.2022.08.016
https://doi.org/10.1016/j.biochi.2022.08.016
Autor:
Elena Dobretsova, Vadim Zhmykhov, Sergey Kuznetsov, Marina Nikova, Irina Chikulina, Vitaly Tarala, Dmitry Vakalov, Roman Khmelnitsky, Lubov Badyanova, Alexandr Pynenkov, Konstantin Nishchev, Yurii Pyrkov, Vladimir Seregin, Vladimir Tsvetkov
Publikováno v:
Chemistry Proceedings, Vol 9, Iss 1, p 18 (2022)
We report the fabrication and characterization of yttrium–aluminum–garnet (Er:YAG) and yttrium–scandium–aluminum–garnet (Er:YSAG) ceramics for the implementation of analysis as an active medium for 1500 nm lasing. High erbium content Er:YAG
Externí odkaz:
https://doaj.org/article/1da54de171474a7a8ed2bef107a9d846
Autor:
Polina Tikhonova, Iulia Pavlova, Ekaterina Isaakova, Vladimir Tsvetkov, Alexandra Bogomazova, Tatjana Vedekhina, Artem V. Luzhin, Rinat Sultanov, Vjacheslav Severov, Ksenia Klimina, Omar L. Kantidze, Galina Pozmogova, Maria Lagarkova, Anna Varizhuk
Publikováno v:
International Journal of Molecular Sciences, Vol 22, Iss 13, p 7090 (2021)
G-quadruplex (G4) sites in the human genome frequently colocalize with CCCTC-binding factor (CTCF)-bound sites in CpG islands (CGIs). We aimed to clarify the role of G4s in CTCF positioning. Molecular modeling data suggested direct interactions, so w
Externí odkaz:
https://doaj.org/article/f90aa259d32141c389292efea16a6f2c