Zobrazeno 1 - 10
of 31
pro vyhledávání: '"N V Alexeeva"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 10, Pp 1-24 (2024)
Abstract Two different methods are used to study the existence and stability of the (1+1)-dimensional Φ4 oscillon. The variational technique approximates it by a periodic function with a set of adiabatically changing parameters. An alternative appro
Externí odkaz:
https://doaj.org/article/89cd62a1e9fc47e1a421b2dbd0e5d386
Publikováno v:
New Journal of Physics, Vol 19, Iss 11, p 113032 (2017)
We consider a ${ \mathcal P }{ \mathcal T }$ -symmetric ladder-shaped optical array consisting of a chain of waveguides with gain coupled to a parallel chain of waveguides with loss. All waveguides have the focusing Kerr nonlinearity. The array suppo
Externí odkaz:
https://doaj.org/article/51a1253d5c0d437094717af37aa48b08
Publikováno v:
Physical Review
Oscillons are localised long-lived pulsating states in the three-dimensional $\phi^4$ theory. We gain insight into the spatio-temporal structure and bifurcation of the oscillons by studying time-periodic solutions in a ball of a finite radius. A sequ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e1695e5149b9218e746b38dfb0e06ad9
https://doi.org/10.1103/physrevd.107.076023
https://doi.org/10.1103/physrevd.107.076023
Autor:
N. V. Alexeeva
Publikováno v:
Russian Journal of Marine Biology. 47:440-450
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4add808b45a9d3c8f9e26eb7f184363d
https://doi.org/10.1134/s106307402106002x
https://doi.org/10.1134/s106307402106002x
Publikováno v:
Annals of Physics. 403:198-223
Although the spinor field in (1+1) dimensions has the right structure to model a dispersive bimodal system with gain and loss, the plain addition of gain to one component of the field and loss to the other one results in an unstable dispersion relati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b4b0b5604e88518356876a36c4ff506c
https://doi.org/10.1016/j.aop.2018.11.010
https://doi.org/10.1016/j.aop.2018.11.010
Publikováno v:
IOP Conference Series: Earth and Environmental Science. 908:012017
The history of the Western Transbaikalia terrestrial fauna of small mammals from the Neogene to the Holocene was traced based on fossil-bearing localities. The main factors influencing the development of the Transbaikalia biota and the environment we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::221739a38c2d787cd2edcedd3fe9103d
https://doi.org/10.1088/1755-1315/908/1/012017
https://doi.org/10.1088/1755-1315/908/1/012017
Publikováno v:
Contemporary Problems of Ecology. 8:764-771
A comparative study of the concentrations of chemical elements (Cu, Zn, Fe, Mn, Ni, Co, Cr, Cd, Pb, Ca, Mg, K) in plants and soils of southern Dagestan has been conducted in two districts distinguished by different levels of heavy metals in rock form
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb71d03fd58eb25786b79bb1718071fe
https://doi.org/10.1134/s1995425515060037
https://doi.org/10.1134/s1995425515060037
Autor:
S A Goncharova, A V Seregin, I V Seregin, N A Gamova, G.A. Levina, O.I. Barhatova, E. R. Tolordava, I V Rakovskaya, N S Mulabaev, T V Stepanova, N V Alexeeva, L V Didenko, Yu M Romanova
Publikováno v:
Scopus-Elsevier
The clinical material obtained surgically in patients with kidney stone disease (KSD) was tested for content of the stone microflora using PCR and standard microbiological methods. It was demonstrated that about 50% of stones in patients with KSD wer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::19470b6ed3119f64253ab94a93d50df9
https://doi.org/10.3103/s089141681502007x
https://doi.org/10.3103/s089141681502007x
Autor:
N. V. Alexeeva, Elena Zemlyanaya
Publikováno v:
Theoretical and Mathematical Physics. 168:858-864
We construct time-periodic solitons of the parametrically driven damped nonlinear Schrodinger equation as solutions of a boundary value problem for the space-dependent Fourier coefficients.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::592e0571fd792af5fd6a28d4ad592261
https://doi.org/10.1007/s11232-011-0069-z
https://doi.org/10.1007/s11232-011-0069-z
Autor:
N. V. Alexeeva, M. A. Erbajeva
Publikováno v:
Ethology Ecology & Evolution. 21:339-348
Marmots are one of the ancient group of mammals. Originated at the end of Miocene in the New World the genus Marmota survives to the Recent time. During its long history a number of migration events can be recorded on the base of paleontological data
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c02dc3fd50326445a49c9dd9a326a4f5
https://doi.org/10.1080/08927014.2009.9522488
https://doi.org/10.1080/08927014.2009.9522488