Zobrazeno 1 - 10
of 40
pro vyhledávání: '"S. V. Gushchin"'
Publikováno v:
Nauka i Tehnika, Vol 20, Iss 3, Pp 207-215 (2021)
The paper describes a technique for assessing the thermally stressed state of a concrete massif of a foundation slab made of a self-compacting concrete mixture. The proposed method consists in a preliminary calculation of temperature fields in harden
Externí odkaz:
https://doaj.org/article/5947efa37e4d41fbbb64d2c0be311848
Autor:
S. V. Gushchin, V. V. Babitski
Publikováno v:
Nauka i Tehnika, Vol 0, Iss 6, Pp 9-18 (2015)
Usage of chemical additives while executing concrete works at negative temperatures is considered as a convenient and economical method. Range of the used antifreeze additives is rather wide. A great number of new additives are advertised but their c
Externí odkaz:
https://doaj.org/article/3484b76a43074c6b810a8c89c98eb185
Publikováno v:
Inorganic Materials. 56:1033-1038
We report a study of upconversion luminescence in BaF2–HoF3 crystals in the visible spectral region under excitation to the 5I5 level of Ho3+ ions by laser radiation with a wavelength of 890 nm. For these excitation conditions, we propose mechanism
Autor:
Mikhail N. Zharkov, A. S. Ermakov, Polina A. Ryabochkina, S. V. Gushchin, A. A. Lyapin, V. M. Kyashkin, S. V. Prytkov, A. V. Atanova
Publikováno v:
Optics and Spectroscopy. 128:200-206
The characteristics of upconversion luminescence of CaF2:Er crystalline powders upon laser excitation of Er3+ ions to the 4I13/2 level at a wavelength of 1531.8 nm are studied. The upconversion luminescence energy yields for the spectral regions of 3
Autor:
Polina A. Ryabochkina, M. V. Chernov, V. Yu. Proydakova, Valery V. Voronov, Sergey V. Kuznetsov, A. A. Lyapin, S. V. Gushchin, Pavel P. Fedorov
Publikováno v:
Optics and Spectroscopy. 125:537-542
Upconversion luminescence of fluoride phosphors SrF2:Er,Yb co-precipitated from aqueous solutions is studied. Under excitation of Er3+ ions to the 4I13/2 level, upconversion luminescence spectra are recorded in the visible and near-IR spectral region
Autor:
S V Gushchin, A V Polonova
Publikováno v:
Journal of Physics: Conference Series. 2061:012091
The purpose of the article is to discuss methods of air disinfection in passenger aircraft cabins during flight. In the course of the study, a comparative analysis of modern methods of cleaning and disinfecting air in closed rooms was carried out. Th
Autor:
S. V. Kuznetsov, Polina A. Ryabochkina, Vladimir Ivanov, A. A. Lyapin, P.P. Fedorov, Valery V. Voronov, A. S. Ermakov, S. V. Gushchin, A. D. Yapryntsev, V. Yu. Proydakova
Publikováno v:
Journal of Physics: Conference Series. 1410:012121
In preset paper, for the first time upconversion luminescence (UCL) of SrF2:Er,Tm phosphors upon excitation of 4I13/2 level of Er3+ were investigated. Fluorite-type SrF2:Er,Tm phosphors were synthesized by co-precipitation from aqueous nitrate soluti
Autor:
A. S. Ermakov, S. V. Gushchin, Pavel P. Fedorov, A. A. Lyapin, Sergey V. Kuznetsov, V. A. Konyushkin, A. N. Nakladov, Polina A. Ryabochkina
Publikováno v:
Journal of Physics: Conference Series. 1410:012086
In present work, the spectral-luminescent properties of CaF2-SrF2-ErF3 (CaF2-SrF2:Er) single crystals were investigated. The upconversion luminescence (UCL) of CaF2-SrF2: Er in the visible and infrared spectral regions upon excitation of the 4I13/2 l
Autor:
Polina A. Ryabochkina, M. V. Chernov, A. S. Ermakov, A. M. Kuzmin, S. V. Gushchin, A. A. Lyapin
Publikováno v:
Journal of Physics: Conference Series. 1410:012154
In this work, the polymer film based on the upconversion particles doped Er3+ and Yb3+ ions and polyethylene was obtained byusing extrusion and hot pressing methods. Upconversion luminescence spectra of polymer films were recorded in the visible spec
Autor:
A. P. Polonsky, S. V. Gushchin
Publikováno v:
IOP Conference Series: Materials Science and Engineering. 632:012094
The article deals with information-diagnostic systems of detection of defects and malfunctions as applied to aircraft structures and units. Methods. Analysis of modern methods of nondestructive testing is carried out. It is suggested to use the combi