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Wyszukujesz frazę "Belić, M." wg kryterium: Autor

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    Wyświetlanie 1-12 z 12
    Tytuł:
    Beam Propagation in Nematic Liquid Crystals
    Autorzy:
    Strinic, A. I.
    Belic, M. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2047844.pdf
    Data publikacji:
    2007-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.65.Tg
    42.65.Sf
    42.70.Df
    Opis:
    We investigate the behavior of beams propagating in nematic liquid crystals. A spatiotemporal model for the beam propagation and the director reorientation in a nematic liquid crystal is treated numerically in three spatial dimensions and time. We demonstrate the formation of stable solitons in a narrow threshold region of beam intensities for a set of fixed parameters and display soliton breathing. Below the threshold region the beams diffract, above the region spatiotemporal instabilities are observed, as the input intensity and the optical and static permittivity anisotropies of the liquid crystal molecules are increased. We demonstrate the filamentation of solitons above the threshold with increasing input intensity.
    Źródło:
    Acta Physica Polonica A; 2007, 112, 5; 877-883
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Counterpropagating Dipole Beams in Nematic Liquid Crystals
    Autorzy:
    Strinic, A. I.
    Jovic, D. M.
    Belic, M. R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2047845.pdf
    Data publikacji:
    2007-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.65.Tg
    42.65.Sf
    42.70.Df
    Opis:
    We investigate the behavior of counterpropagating optical beam structures in nematic liquid crystals. We restrict our attention to the dipole-dipole beam arrangements. A time-dependent model for the beam propagation and the director reorientation in nematic liquid crystals is numerically treated in three spatial dimensions and time. Stable dipole beams are observed in a very narrow threshold region of control parameters. Below this region the beams diffract, above the region spatiotemporal instabilities are observed, as the input intensity is increased and also as the distance between the dipole partners is decreased. A transverse beam displacement of counterpropagating dipole beams is also found. The difference between the in-phase and out-of-phase components of the dipole is significant, but only for a smaller distance between the dipole partners.
    Źródło:
    Acta Physica Polonica A; 2007, 112, 5; 885-890
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dancing Light: Counterpropagating Beams in Photorefractive Crystals
    Autorzy:
    Belić, M.
    Petrović, M.
    Jović, D.
    Strinić, A.
    Arsenović, D.
    Prvanović, S.
    Jovanović, R.
    Petrović, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/1814046.pdf
    Data publikacji:
    2007-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.65.Tg
    42.65.Sf
    Opis:
    A review of work on the dynamical behavior of counterpropagating incoherent laser beams in photorefractive crystals is presented. Numerical study of counterpropagating beams of different type is carried out, in both space and time, using an appropriate theoretical model. The development of patterns in broad hyper-Gaussian counterpropagating beams in saturable Kerr-like media is investigated, by varying the width of beams. Rotational properties of counterpropagating mutually incoherent self-trapped vortex beams in optically induced fixed photonic lattices are also investigated numerically. One of the fundamental quantum mechanical phenomena is observed for the counterpropagating beams in photonic lattices, the tunneling of light from the first to the higher-order bands of the lattice band gap spectrum. The transfer of angular momentum from vortex beams to optically induced photonic lattices is also demonstrated. For the interacting beams it is found that the sum of angular momenta of counterpropagating components is not a conserved quantity, but the difference is. In the fixed lattices there is always a considerable loss of angular momentum.
    Źródło:
    Acta Physica Polonica A; 2007, 112, 5; 729-736
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Counterpropagating Matter Waves in Optical Lattices
    Autorzy:
    Prvanović, S.
    Jović, D.
    Jovanović, R.
    Strinić, A.
    Belić, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1791206.pdf
    Data publikacji:
    2009-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    03.75.Lm
    Opis:
    An investigation of Bose-Einstein condensate in two-dimensional optical lattice potentials, formed by laser beams, is carried out. We are interested in the dynamics of Bose-Einstein condensate in a square optical lattice, where the periodic potential can lead to the stabilization of an otherwise unstable Bose-Einstein condensate. The behavior of Bose-Einstein condensate in optical lattices is described by the nonlinear Gross-Pitaevskii equation, which we treat numerically. By applying the Petviashvili iteration method, we demonstrate the existence of solitonic solutions in the case of counterpropagating matter waves, and analyze their stability.
    Źródło:
    Acta Physica Polonica A; 2009, 116, 4; 507-509
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hyper-Solitons in Nematic Liquid Crystals
    Autorzy:
    Strinic, A.
    Petrović, M.
    Belić, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1791208.pdf
    Data publikacji:
    2009-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.70.Df
    42.65.Tg
    Opis:
    We study laser light propagation in a cell containing a liquid crystal in the nematic phase. We launch hyper-Gaussian beams and follow their behavior within the cell, in time and in three spatial dimensions, utilizing an appropriately developed theoretical model and a numerical procedure based on the fast Fourier transform. We demonstrate the formation of stable "hyper-soliton" breathers in a narrow region of beam intensities, for fixed other parameters. Hyper-solitons are similar in appearance and behavior to the usual solitons, formed by launching the usual Gaussian beams; however noticeable differences persist.
    Źródło:
    Acta Physica Polonica A; 2009, 116, 4; 510-512
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Chirped optical solitons in birefringent fibers with parabolic law nonlinearity and four-wave mixing
    Autorzy:
    Triki, H.
    Biswas, A.
    Milović, D.
    Belić, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1158116.pdf
    Data publikacji:
    2016-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.81.Dp
    42.65.Tg
    Opis:
    We investigate exact soliton solutions with nonlinear chirp for the coupled nonlinear Schrödinger equations with cubic-quintic nonlinearity, self-steepening, self-frequency shift and four-wave mixing. The model governs the femtosecond pulse propagation in birefringent fibers. We introduce a new ansatz to obtain the nonlinear chirp associated with the propagating soliton pulses. New chirped soliton pair solutions with non-trivial chirping are found for the coupled nonlinear equations, illustrating the potentially rich set of solitonic pulse solutions of the model with higher-order effects. The solutions comprise two types of bright-W-shaped and bright-bright soliton pairs as well as kink and anti-kink pulses. Interestingly, the bright wave in the bright-W shaped soliton pairs possesses a platform underneath it, originating from the self-steepening and self-frequency shift effects. The corresponding chirp associated with each of these optical soliton pairs is also determined. It is shown that the nonlinear chirp is related to the pair intensity and determined by self-frequency shift and pause self-steepening. Parametric conditions for the existence and uniqueness of chirped solutions are given.
    Źródło:
    Acta Physica Polonica A; 2016, 130, 3; 718-726
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Beta-hydroxybutyrate in milk as screening test for subclinical ketosis in dairy cows
    Autorzy:
    Ježek, J.
    Cincović, M.R.
    Nemec, M.
    Belić, B.
    Djoković, R.
    Klinkon, M.
    Starič, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087891.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Źródło:
    Polish Journal of Veterinary Sciences; 2017, 3; 507-512
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Solitons in Nonlinear Directional Couplers with Optical Metamaterials by Trial Function Scheme
    Autorzy:
    Arnous, A.
    Ekici, M.
    Moshokoa, S.
    Zaka Ullah, M.
    Biswas, A.
    Belic, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1032564.pdf
    Data publikacji:
    2017-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.81.Dp
    42.65.Tg
    Opis:
    This paper obtains soliton solutions to nonlinear directional couplers in optical metamaterials by the aid of trial function method. Three types of couplers are studied. Four forms of nonlinearity are considered. Bright, dark, and singular soliton solutions are retrieved. These soliton solutions appear with certain constraint conditions that guarantee their existence.
    Źródło:
    Acta Physica Polonica A; 2017, 132, 4; 1399-1410
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Association of metabolic and inflammatory markers with milk yield in postpartum dairy cows treated with ketoprofen
    Autorzy:
    Kovacevic, Z.
    Stojanovic, D.
    Cincovic, M.
    Belic, B.
    Davidov, I.
    Plavsa, N.
    Radinovic, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087713.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ketoprofen
    TNF-a
    haptoglobin
    NEFA
    BHB
    cow
    milk yield
    Źródło:
    Polish Journal of Veterinary Sciences; 2018, 21, 2; 325-331
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of postpartum administration of ketoprofen on proinflammatory cytokine concentration and their correlation with lipogenesis and ketogenesis in Holstein dairy cows
    Autorzy:
    Kovacevic, Z.
    Stojanovic, D.
    Cincovic, M.
    Belic, B.
    Davidov, I.
    Stojanac, N.
    Galfi, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087477.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ketoprofen
    TNF-α
    IL-1α
    IFN-γ
    cow
    Źródło:
    Polish Journal of Veterinary Sciences; 2019, 3; 609-615
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biological variations of hematologic and biochemical parameters in cows during early lactation
    Autorzy:
    Kovačević, V.
    Cincović, M.R.
    Belić, B.
    Đoković, R.
    Lakić, I.
    Radinović, M.
    Potkonjak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087206.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    cow
    biological variability
    biochemistry
    hematology
    individuality index
    Źródło:
    Polish Journal of Veterinary Sciences; 2021, 24, 1; 119-125
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Off label use of human approved drugs in treatment of dogs in the Republic of Serbia
    Autorzy:
    Tomanic, D.
    Stojanovic, D.
    Belić, B.
    Davidov, I.
    Novakov, N.
    Radinovic, M.
    Kladar, N.
    Kovacevic, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087106.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    off label use
    human drugs
    dogs
    cascade procedure
    antimicrobials
    Źródło:
    Polish Journal of Veterinary Sciences; 2021, 24, 3; 399-407
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

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