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

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    Wyświetlanie 1-7 z 7
    Tytuł:
    Magnetic Properties of Encapsulated Magnetite in PLGA Nanospheres
    Autorzy:
    Koneracká, M.
    Závišová, V.
    Timko, M.
    Kopčanský, P.
    Tomašovičová, N.
    Csach, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1813943.pdf
    Data publikacji:
    2008-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.20.Rv
    75.50.Mm
    87.83.+a
    Opis:
    In this study, the biocompatible magnetic fluid was encapsulated in biodegradable polymer PLGA (poly D, L/lactide-co-glycolide acid) by the nanoprecipitation method. We characterized these spheres in terms of morphology, magnetite content and magnetic properties. The results showed good encapsulation with magnetite content 22wt% and magnetization 3.4 mT. The transmission electron microscopy and scanning electron microscopy images showed that magnetic particles have almost a spherical shape with approximate size 250 nm. Infrared spectroscopy and thermogravimetric analysis measurements were used to confirm incorporation of magnetic particles into the PLGA polymer.
    Źródło:
    Acta Physica Polonica A; 2008, 113, 1; 595-598
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermal Analysis of Magnetic Polymer Nanospheres for Drug Targeting
    Autorzy:
    Juríková, A.
    Csach, K.
    Miškuf, J.
    Koneracká, M.
    Závišová, V.
    Kopčanský, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1535061.pdf
    Data publikacji:
    2010-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    47.65.Cb
    65.80.-g
    47.63.mh
    Opis:
    Poly(D,L-lactic-co-glycolic) acid (PLGA) polymer nanospheres loaded with different input amounts of anticancer drug taxol were prepared by the modified nanoprecipitation method. Magnetite was incorporated into the polymer nanospheres to impart them superparamagnetic properties. Thermal properties of the drug loaded magnetic polymer nanospheres were characterized using differential scanning calorimetry and thermogravimetric analysis. The solid state solubility of taxol in PLGA nanospheres and the influence of external magnetic field on their thermal stability were estimated. The investigations have revealed that the samples of dried taxol loaded magnetic PLGA nanospheres undergo mass loss at three stages during heating.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 5; 990-992
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermogravimetric Study of the Decomposition of BSA-Coated Magnetic Nanoparticles
    Autorzy:
    Csach, K.
    Juríková, A.
    Miškuf, J.
    Koneracká, M.
    Závišová, V.
    Kubovčíková, M.
    Kopčanský, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1429064.pdf
    Data publikacji:
    2012-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    47.65.Cb
    65.80.-g
    Opis:
    Magnetic nanoparticles used in biomedicine have to be biocompatible, which can be achieved by the modification of the magnetic particle surface with an appropriate biocompatible substance. In the work protein bovine serum albumin (BSA) was chosen to modify the surface of magnetic nanoparticles. The BSA-coated magnetic nanoparticles with different input weight ratios of BSA to the magnetite $Fe_3O_4$ were prepared and thermally characterized using thermogravimetric and differential scanning calorimetric analysis. The adsorption of BSA on the magnetic nanoparticles in wide range of concentration was confirmed. The activation energies of the thermal decomposition of the complex system were estimated.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 5-6; 1293-1295
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermal Analysis of Magnetic Nanoparticles Modified with Dextran
    Autorzy:
    Juríková, A.
    Csach, K.
    Miškuf, J.
    Koneracká, M.
    Závišová, V.
    Kubovčíková, M.
    Kopčanský, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1429065.pdf
    Data publikacji:
    2012-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    47.65.Cb
    65.80.-g
    Opis:
    In the work the thermal behaviour of the magnetic nanoparticles modified with polysaccharide dextran of different weight ratios to the magnetite $Fe_3O_4$ was investigated using thermoanalytical methods - differential scanning calorimetry and thermogravimetric analysis. The adsorption of dextran on the magnetic nanoparticles was confirmed and the influence of the dextran amount in the modified magnetic fluid on the thermal decomposition of the complex system was studied. The results showed that magnetite catalyzed the thermal decomposition of dextran, the adsorbed dextran showed lower initial decomposition temperatures in comparison with the free one.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 5-6; 1296-1298
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Kinetics of Nematic to Isotropic Phase Transition in Liquid Crystal Doped with Magnetic Nanoparticles
    Autorzy:
    Csach, K.
    Juríková, A.
    Miškuf, J.
    Tomašovičová, N.
    Gdovinová, V.
    Závišová, V.
    Kopčanský, P.
    Éber, N.
    Fodor-Csorba, K.
    Vajda, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1032719.pdf
    Data publikacji:
    2017-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.30.-v
    64.70.mj
    65.80.-g
    Opis:
    A binary mixture of bent-core and rod-shaped liquid crystals was chosen as a model substance combining the properties of both types of liquid crystals. The mixture was doped with a small amount of spherical and rod-like magnetic nanoparticles. Differential scanning calorimetry experiments were performed for the pure as well as for the doped mixture at different heating rates ranging from 1 to 16°C/min. The addition of the magnetic nanoparticles lowered the phase transition temperature. This effect is more intensive in the case of the rod-like magnetic nanoparticles. The kinetics of the nematic to isotropic phase transition was evaluated in the framework of the differential isoconversional method. The calculated apparent activation energy showed non-monotonic behaviour and a sensitivity on the shape of added magnetic nanoparticles.
    Źródło:
    Acta Physica Polonica A; 2017, 131, 4; 949-951
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characterization of $Fe_3O_4$ Magnetic Nanoparticles Modified with Dextran and Investigation of Their Interaction with Protein Amyloid Aggregates
    Autorzy:
    Koneracká, M.
    Antošová, A.
    Závišová, V.
    Lancz, G.
    Gažová, Z.
    Šipošová, K.
    Juríková, A.
    Csach, K.
    Kováč, J.
    Tomašovičová, N.
    Fabián, M.
    Kopčanský, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1535048.pdf
    Data publikacji:
    2010-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Mm
    87.14.em
    87.19.xr
    Opis:
    Functionalised magnetic nanoparticles composed of $Fe_3O_4$ particles stabilised by sodium oleate and subsequently modified with dextran (MFDEX) were prepared by the co-precipitation method. Their morphology and particle size distribution were observed by scanning electron microscopy and photon cross correlation spectroscopy. In order to confirm the modification of magnetite surface with dextran physical techniques, including infrared spectroscopy, thermal analysis, and magnetic measurement, were used. Finally, the effect of MFDEX on amyloid fibrillar aggregates of human insulin and hen egg white lysozyme, typical amyloidogenic proteins, was investigated. In vitro interaction of MFDEX with protein amyloid fibrils resulted into destruction of amyloid aggregates. The anti-amyloid activity makes MFDEX of potential interest as therapeutic agent against amyloid-related diseases.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 5; 983-985
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermal Stability of Bent-Core Liquid Crystals Doped with Magnetic Nanoparticles
    Autorzy:
    Juríková, A.
    Csach, K.
    Miškuf, J.
    Tomašovičová, N.
    Mitróová, Z.
    Závišová, V.
    Koneracká, M.
    Kopčanský, P.
    Timko, M.
    Éber, N.
    Fodor-Csorba, K.
    Vajda, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1387994.pdf
    Data publikacji:
    2015-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.30.-v
    64.70.mj
    65.80.-g
    Opis:
    In the work phase transitions in bent-core liquid crystals were studied using differential scanning calorimetry. For the binary mixture of bent-core molecules with 50 wt% of rod-shaped compound, the nematic to smectic transition occured below 40°C and the crystallization temperature shifted to sub-ambient temperatures. The influence of doping of the bent-core liquid crystals with magnetic nanoparticles on the kinetics of observed phase transitions was studied. The phase transition temperatures were shifted depending on the nanoparticle type and changed with varying cooling rate for all studied liquid crystal samples.
    Źródło:
    Acta Physica Polonica A; 2015, 127, 2; 638-640
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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