Zobrazeno 1 - 10
of 25
pro vyhledávání: '"A.V. Anufrieva"'
Publikováno v:
Учёные записки Казанского университета: Серия Физико-математические науки, Vol 158, Iss 1, Pp 26-39 (2016)
A boundary-value problem on an interval for a one-dimensional system of the Lame equations corresponding to a physical problem of propagation of an elastic wave through the gradient layer is considered. In this case, the coefficients of the equations
Externí odkaz:
https://doaj.org/article/c1b56d65e2184505bf31400ff243e45e
Publikováno v:
Far East Journal of Mathematical Sciences (FJMS). 101:1253-1264
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a74ae65094dc308d36acf6677ff2fd3a
https://doi.org/10.17654/ms101061253
https://doi.org/10.17654/ms101061253
Publikováno v:
Advances in Acoustics and Vibration, Vol 2015 (2015)
The problem of diffraction of a plane elastic wave by an anisotropic layer is studied. The diffraction problem is reduced to a boundary value problem for the layer. The grid method is used for solving the resulting boundary value problem. The diffrac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fdffc9c2a45d757902ee8998a426a93c
https://doi.org/10.1155/2015/515263
https://doi.org/10.1155/2015/515263
Publikováno v:
Procedia Chemistry. 11:119-125
The choice of the method of monazite opening determines the further technology. The article presents the results of the studies of monazite decomposition with sulfuric and nitric acid. Also, the issues concerning the extraction processing of opening
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::249e9848de51c9cb300eb5e465375eea
https://doi.org/10.1016/j.proche.2014.11.022
https://doi.org/10.1016/j.proche.2014.11.022
Publikováno v:
Applied Mathematical Sciences. 8:5875-5886
In this study, we underline the peculiarities of the refraction problem of elastic waves from a layer with a fractal density distribution. The refraction problem is reduced to the system of ordinary dierential equations with linear coecients. Analyti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85c08d0339fba4eeae31f62c91a66636
https://doi.org/10.12988/ams.2014.46473
https://doi.org/10.12988/ams.2014.46473
Publikováno v:
Procedia Chemistry. 11:176-181
Practically all phosphorites contain impurities whose presence is undesirable in fertilizers. At the same time it is necessary to extract rare earth elements from phosphorites. Every year millions of tons of phosphogypsum are sent to waste dumps that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15578d1fb756912bb461be4afd6d087a
Autor:
A S Buynovskiy, R A Nefedov, O B Stepanova, I. N. Mazov, M O Andropov, A.V. Valkov, Yu. N. Makaseev, Victor I. Sachkov, A.V. Anufrieva
Publikováno v:
IOP Conference Series: Materials Science and Engineering. 2016. Vol. 112. P. 012001 (1-4)
The features of extraction of rare earth elements (REE) were considered from hydrate-phosphate precipitates of REE of apatite processing by nitric acid technology. The preliminary purification of nitrate solution of REE from impurities of titanium, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1be1f9450da788704a8b5bc4f8621e38
http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000624849
http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000624849
Autor:
R A Nefedov, O B Stepanova, A.V. Valkov, I. N. Mazov, A.V. Anufrieva, Victor I. Sachkov, A S Buynovskiy, Yu. N. Makaseev, O S Andrienko
Publikováno v:
IOP Conference Series: Materials Science and Engineering. 2016. Vol. 112. P. 012002 (1-6)
The paper deals with the study of processing apatite ores with nitric acid and extraction of the rare earth elements. The rare earth elements can be successfully separated and recovered by extraction from the nitrate- phosphate solution, being an tri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cde1aa391bb43264867fbc37be31bada
http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000624850
http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000624850
Publikováno v:
ResearcherID
The problem of diffraction of a plane elastic wave by a gradient in the transverse direction layer is studied. The diffraction problem is reduced to a boundary value problem for the layer. The grid method is used for solving the resulting boundary va
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6b6585f7d5da8737b0eb1fcab995264
https://doi.org/10.1109/dd.2013.6712795
https://doi.org/10.1109/dd.2013.6712795
Autor:
A.V. Anufrieva, Dmitrii Tumakov
Publikováno v:
Advances in Acoustics and Vibration, Vol 2013 (2013)
The problem of diffraction of a plane elastic wave by a gradient transversely isotropic layer is considered. Using the method of overdetermined boundary value problem in combination with the Fourier transform method, the system of ordinary differenti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09dac616a701e46ca3dbfe88eab7afc9