Zobrazeno 1 - 10
of 110
pro vyhledávání: '"K. Grygiel"'
Publikováno v:
eXPRESS Polymer Letters, Vol 8, Iss 1, Pp 30-38 (2014)
Modification of poly(benzimidazole) (PBI) by N-alkylation leads to polymers capable of undergoing microphase separation. Polymers with different amounts of C18 alkyl chains have been prepared. The polymers were analyzed by spectroscopy, thermal analy
Externí odkaz:
https://doaj.org/article/47d0270957d74ac9a993363e65b43f8e
Autor:
Jarosław Czerwiński, K. Grygiel, D. Lewandowska, Małgorzata Dudkiewicz, Ł. Górski, E. Karpeta, K. Antoszkiewicz
Publikováno v:
Transplantation Proceedings. 48:1407-1410
Background In 2006, the National Transplants Registry, administered by the national transplant organization, was introduced in Poland for monitoring the results of organ transplantations. Statistical analysis is published yearly in Poltransplant Bull
Publikováno v:
Nonlinear Dynamics. 57:143-156
Coexisting periodic solutions of a dynamical system describing nonlinear optical processes of the second-order are studied. The analytical results concern both the simplified autonomous model and the extended nonautonomous model, including the pump a
Autor:
K. Grygiel, W. Alexiewicz
Publikováno v:
Acta Physica Polonica A. 114:667-686
Assuming the low molecular reorientation approximation, the formulae for the third-order electric polarization induced in liquids composed of rigid noninteracting dipolar, symmetric-top molecules in spherical solvents were derived. Our medium is acte
Autor:
W. Alexiewicz, K. Grygiel
Publikováno v:
Acta Physica Polonica A. 114:687-698
The graphical analysis of the in∞uence of the rotational difiusion tensor anisotropy and the orientation of the permanent dipole moment on the linear and nonlinear dielectric relaxation is shown. The solution of Smoluchowski{Debye rotational difius
Publikováno v:
Nonlinear Dynamics. 53:13-18
The letter shows the possibility of generation of hyperchaotic beats characterized by four, three or two positive Lyapunov exponents. The beats are a result of linear coupling of two identical nonlinear subsystems describing second-harmonic generatio
Publikováno v:
The European Physical Journal D - Atomic, Molecular and Optical Physics. 25:173-180
Nonlinear Optics Division, Institute of Physics, A. Mickiewicz University,ul. Umultowska 85, PL 61-614 Poznan´, Poland(Dated: February 8, 2008)A pair (A,B) of interacting oscillators treated as a master system sending signals to its slavecopy (a,b)
Autor:
K. Grygiel
Publikováno v:
Journal of Modern Optics. 49:1043-1056
Characteristic features of a dynamical system are well represented by a Lyapunov exponents map in parametric space. We used this tool to investigate the system governing second-harmonic generation of light with a pulsating external field (square wave
Autor:
K. Grygiel
Publikováno v:
Optics Communications. 204:391-398
Complex dynamics of a system of the second-harmonic generation (SHG) of light with a modulated pump field is investigated. We used the Lyapunov exponents map to indicate the parameters of the pump for which the system generates a hyperchaotic signal.
Autor:
P Szlachetka, K Grygiel
Publikováno v:
Journal of Optics B: Quantum and Semiclassical Optics. 3:104-110
The chaotical dynamics of two linearly coupled Kerr oscillators is studied. The system is damped and pumped by external time-dependent forces. The linearly coupled oscillators can behave in an orderly manner, chaotically or hyperchaotically according