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Wyszukujesz frazę "Marton, K." wg kryterium: Autor

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    Wyświetlanie 1-6 z 6
    Tytuł:
    Dielectric Properties of Magnetic Liquids in High Electric Fields
    Autorzy:
    Herchl, F.
    Kopčanský, P.
    Timko, M.
    Koneracká, M.
    Marton, K.
    Kolcunová, I.
    Tomčo, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1813918.pdf
    Data publikacji:
    2008-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Mm
    77.22.-d
    Opis:
    In this work, dielectric properties of magnetic fluids composed of magnetite particles dispersed in transformer oil and subjected to a uniform magnetic field were investigated at the high alternating electric field intensities in the range of 0.5-2.5 MV/m. Dielectric stability of the magnetic fluid with the particle volume concentrationΦ= 0.0019 was observed. The magnetic fluid with the concentrationΦ= 0.019 showed the significant changes of permittivity and dielectric losses, too.
    Źródło:
    Acta Physica Polonica A; 2008, 113, 1; 569-572
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Investigation on the E-J Characteristics and the Role of Nanoparticle Concentration in Weakly Polar Magnetic Fluids
    Autorzy:
    Kurimský, J.
    Dolník, B.
    Marton, K.
    Kolcun, M.
    Tomčo, L.
    Rajňák, M.
    Timko, M.
    Kopčanský, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1201885.pdf
    Data publikacji:
    2014-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    47.65.Cb
    77.22.Jp
    84.37.+q
    Opis:
    The paper presents investigation on the magnetic fluids that are stable colloidal suspensions of single-domain magnetic particles in a liquid carrier of dielectrics nature. Studies were made on the electric field vs. current density, e.i. E-J characterization commonly observed in insulating liquids under uniform low electric or magnetic fields. High performance oil was used as the dielectric carrier. The experiments were carried out at different volume concentrations of magnetite nanoparticles up to 4%.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 1; 246-247
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Magnetic Field on Dielectric Breakdown in Transformer Oil Based Ferrofluids
    Autorzy:
    Rajňák, M.
    Dolník, B.
    Marton, K.
    Tomčo, L.
    Molčan, M.
    Kopčanský, P.
    Timko, M.
    Kurimský, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1201920.pdf
    Data publikacji:
    2014-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Mm
    77.22.Jp
    75.75.Jn
    Opis:
    In this paper the experimental study of the breakdown field strength in a transformer oil based ferrofluid is reported. The experiments are conducted on five ferrofluid samples with different magnetic volume fraction. The influence of external magnetic field on the breakdown field strength is investigated, when a quasi-homogenous magnetic field was applied in parallel and perpendicular configuration in regard to the electric field. The obtained results are analysed in accordance to the electron charging of ferrofluid nanoparticles theory.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 1; 248-249
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hall Effect in ZnO Extrinsic Structure
    Autorzy:
    Dolník, B.
    Kurimský, J.
    Marton, K.
    Kolcun, M.
    Tomčo, L.
    Briančin, J.
    Fabián, M.
    Halama, M.
    Vojtko, M.
    Rajňák, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1200027.pdf
    Data publikacji:
    2014-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.43.Dq
    72.20.My
    84.32.Ff
    84.37.+q
    81.05.Xj
    72.80.Ng
    Opis:
    Zinc oxide-based extrinsic composite was investigated. The sample was selected from a series of components of one production batch, prepared by standard sintering technology. The content of extrinsic elements in ZnO base was determined by SEM. Van der Pauw method with four-point electrode fixture was used for study of conducting phenomena in square-shaped sample. It is normaly preferred to assume the symmetric uniformity of the electrical properties of sample, for which sheet resistance, bulk resistivity and Hall mobility, sheet carrier density and carrier concentration can be calculated. When the uniformity of measured parameters is breached, the anisotropy in the arrangement of the internal structure may be the cause. There remains the question of whether the extrinsic ZnO material can be isotropic, regarding the electrical conductivity. Although the Hall effect has been measured, preliminary measurements indicate the presence of anisotropy in the measured samples. Before measurement the following phenomena should be taken into account: magneto-electric effect, photo-electric effect and the isothermal condition should be preserved. Paper discusses the uniformity deviations for the defined setup configurations for positive and negative magnetic field directions. Bulk resistivity has been calculated by numerical solution of van der Pauw equation. Large offset voltage during the measurement is discussed.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 1; 76-77
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetodielectric Properties of Transformer Oil Based Magnetic Fluids
    Autorzy:
    Timko, M.
    Kopcansky, P.
    Molcan, M.
    Tomco, L.
    Marton, K.
    Molokac, S.
    Rybar, P.
    Stoian, F.
    Holotescu, S.
    Taculescu, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1428655.pdf
    Data publikacji:
    2012-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    47.65.Cb
    77.22.Gm
    77.22.Ch
    Opis:
    This contribution is devoted to study of dielectric and magnetodielectric properties in transformer oil based magnetic fluid. The dielectric permittivity and their anisotropy at various mutual orientation electric (50 Hz) and magnetic field were shown at the different volume concentrations of nanoparticles at room temperature. The linear increase of dielectric constant with volume concentration was confirmed which is in good agreement with the theoretical Maxwell prediction. The dielectric anisotropy factor g(B, ω) is very close to g=1. The values of permittivity increased with the increase of volume fraction of magnetite nanoparticles. The highest value of anisotropy characterized by deviation of permittivity $Δε=ε_{∥} - ε_{⊥}$ was found for the highest volume concentration which could mean that no aggregation of magnetite nanoparticles had appeared.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 5-6; 1253-1256
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Enabling generic distributed computing infrastructure compatibility for workflow management systems
    Autorzy:
    Kozlovszky, M.
    Karoczkai, K.
    Marton, I.
    Balasko, A.
    Marosi, A.
    Kacsuk, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/305454.pdf
    Data publikacji:
    2012
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    workflow management systems
    infrastructure interoperability
    Distributed Computing Infrastructure
    DCI
    DCI Bridge
    Opis:
    Solving workflow management system’s Distributed Computing Infrastructure (DCI) incompatibility and their workflow interoperability issues are very challenging and complex tasks. Workflow management systems (and therefore their workflows, workflow developers and also their end-users) are bounded tightly to some limited number of supported DCIs, and efforts required to allow additional DCI support. In this paper we are specifying a concept how to enable generic DCI compatibility for grid workflow management systems (such as ASKALON, MOTEUR, gUSE/WS-PGRADE, etc.) on job and indirectly on workflow level. To enable DCI compatibility among the different workflow management systems we have developed the DCI Bridge software solution. In this paper we will describe its internal architecture, provide usage scenarios to show how the developed service resolve the DCI interoperability issues between various middleware types. The generic DCI Bridge service enables the execution of jobs onto the existing major DCI platforms (such as Service Grids (Globus Toolkit 2 and 4, gLite, ARC, UNICORE), Desktop Grids, Web services, or even cloud based DCIs).
    Źródło:
    Computer Science; 2012, 13 (3); 61-78
    1508-2806
    2300-7036
    Pojawia się w:
    Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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