Zobrazeno 1 - 10
of 232
pro vyhledávání: '"S. A. 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
Publikováno v:
Doklady Chemistry. 471:325-329
A relation between the quadrupole coupling constant e2Qqzz and asymmetry parameter η has been found for a series of meta-substituted iodobenzene derivatives. The relationships e2Qqzz(η) for electrondonor and electron-acceptor substituents have the
Autor:
Oleg S. Morenkov, S. V. Dezhurov, P. P. Gladyshev, S. A. Gushchin, A. P. Gushchin, A. A. Vasiliev, D. V. Krylsky
Publikováno v:
Journal of Analytical Chemistry. 71:1063-1068
A device is developed for automated immunochromatographic assay, designed for one-time tests at the place of occurrence of a disease. The device comprises a turntable platform for up to five strips placed simultaneously, a unit for sample collection
Autor:
S. N. Gushchin
Publikováno v:
IOP Conference Series: Materials Science and Engineering. 919:022059
The article considers the features of the effects of oriented plastic deformation in rectangular cross-section rods. The effect of changes in elastic resistance thresholds is that in cases when products are subjected to loads in the same directions a
Autor:
S. N. Gushchin
Publikováno v:
IOP Conference Series: Materials Science and Engineering. 919:022047
The article considers the influence of the structural form of elements on the corrosion of metal structures. Corrosion is the spontaneous destruction of metals and alloys as a result of chemical, electrochemical or physical-chemical interaction with