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    Wyświetlanie 1-7 z 7
    Tytuł:
    Education and Research on Polish Studies in Korea
    Autorzy:
    Cheong, Kwon Byung
    Kim, Jong Suck
    Choi, Sung Eun (Estera Czoj)
    Kim, Yong Deog
    Kim, Ji Young
    Lee, Ok Jin
    Lee, Ji Wone
    Koh, Seung Hui
    Powiązania:
    https://bibliotekanauki.pl/articles/26414309.pdf
    Data publikacji:
    2013-06-30
    Wydawca:
    Wydawnictwo Adam Marszałek
    Tematy:
    Polish studies
    Korea
    Department of Polish Studies
    HUFS
    Opis:
    Polish education and research in Korea has become systematic since the establishment of the Department of Polish Studies at Hankuk University of Foreign Studies (HUFS). The Department of Polish Studies at HUFS is the only academic department in Korea which teaches and studies the politics, economy, history, and culture of Poland, as well as the Polish language and literature. Since its establishment in 1987, the department has produced more than 800 graduates. The Department of Polish Studies forms and maintains a close relationship with universities in Poland. It also makes continuous effort for more students to study the Polish language at universities in Poland.
    Źródło:
    The New Educational Review; 2013, 32; 19-34
    1732-6729
    Pojawia się w:
    The New Educational Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Pyrolysis Conditions on the Physicochemical Properties of Graphitic Carbon Nitride for Visible-Light-Driven Photocatalytic Degradation
    Autorzy:
    Kim, Jeong Hyun
    Ji, Myeongjun
    Ryu, Cheol-Hui
    Lee, Young-In
    Powiązania:
    https://bibliotekanauki.pl/articles/351503.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    g-C3N4
    pyrolysis
    polymerization
    synthesis condition
    photocatalysis
    Opis:
    Graphitic carbon nitride (g-C3 N4 ) is an attractive photocatalyst, however, its practical photocatalytic applications are still faced with huge challenges. The aim of this research is to identify the correlation between synthetic conditions and properties of the g-C3 N4 and derive an optimum synthesis condition for improving photocatalytic activities of the g-C3 N4. In this study, novel and versatile g-C3 N4 nanosheets were synthesized by the simple thermal pyrolysis of urea. In the synthesis process, the pyrolysis temperature and the heating rate, which can have the most significant influence on the structures and properties of g-C3 N4, were set as variables, and the effects were systematically investigated. When synthesized at a relatively high temperature, the amount of material being synthesized is reduced, however it has been found to represent optical properties suitable for highly efficient photo-catalyst by the increase in the thickness and defects formed in the g-C3 N4nanosheets. The photocatalytic degradation experiment of MB dyes indicated that the highest degradation of 95.2% after the reaction for 120 min was achieved on the g-C3 N4 nanosheets synthesized at 650°C.
    Źródło:
    Archives of Metallurgy and Materials; 2020, 65, 3; 1111-1116
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    FERMENTED ORIENTAL MEDICINAL INSECT EXTRACT HAS A SYNERGISTIC EFFECT ON INHIBITING TGF-ß1- OR H2O2-INDUCED HEPATIC FIBROGENESIS IN LX-2 AND HEPG2 CELLS
    Autorzy:
    Choo, Young-Moo
    Choi, Young-Ji
    Park, In-Sun
    Son, Yu-Kyog
    You, Kang-Yeol
    Kim, Jiyoung
    Powiązania:
    https://bibliotekanauki.pl/articles/895380.pdf
    Data publikacji:
    2019-06-28
    Wydawca:
    Polskie Towarzystwo Farmaceutyczne
    Źródło:
    Acta Poloniae Pharmaceutica - Drug Research; 2019, 76, 3; 599-603
    0001-6837
    2353-5288
    Pojawia się w:
    Acta Poloniae Pharmaceutica - Drug Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis and Characterization of W Composite Powder with La2O3-Y2O3 Nano-Dispersoids by Ultrasonic Spray Pyrolysis
    Autorzy:
    Heo, Youn Ji
    Lee, Eui Seon
    Kim, Jeong Hyun
    Lee, Young-In
    Jeong, Young-Keun
    Oh, Sung-Tag
    Powiązania:
    https://bibliotekanauki.pl/articles/2174558.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    W composite powder
    La2O3-Y2O3 dispersion
    ultrasonic spray pyrolysis
    polymeric additive solution method
    Opis:
    An optimum route to synthesis the W-based composite powders with homogeneous dispersion of oxide nanoparticles was investigated. The La2O3 dispersed W powder was synthesized by ultrasonic spray pyrolysis using ammonium metatungstate hydrate and lanthanum nitrate. The dispersion of Y2O3 nanoparticles in W-La2O3 powder was carried out by a polymer addition solution method using yttrium nitrate. XPS and Tem analyses for the composite powder showed that the nano-sized La2O3 and Y2O3 particles were well distributed in W powder. This study suggests that the combination processing of ultrasonic spray pyrolysis and polymeric additive solution is a promising way to synthesis W-based composite powders.
    Źródło:
    Archives of Metallurgy and Materials; 2022, 67, 4; 1507--1510
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Study on the Optimization of Metalloid Contents of Fe-Si-B-C Based Amorphous Soft Magnetic Materials Using Artificial Intelligence Method
    Autorzy:
    Choi, Young-Sin
    Kwon, Do-Hun
    Lee, Min_Woo
    Cha, Eun-Ji
    Jeon, Junhyub
    Lee, Seok-Jae
    Kim, Jongryoul
    Kim, Hwi-Jun
    Powiązania:
    https://bibliotekanauki.pl/articles/2174571.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Fe-based amorphous
    soft magnetic properties
    artificial intelligence
    machine learning
    random forest regression
    Opis:
    The soft magnetic properties of Fe-based amorphous alloys can be controlled by their compositions through alloy design. Experimental data on these alloys show some discrepancy, however, with predicted values. For further improvement of the soft magnetic properties, machine learning processes such as random forest regression, k-nearest neighbors regression and support vector regression can be helpful to optimize the composition. In this study, the random forest regression method was used to find the optimum compositions of Fe-Si-B-C alloys. As a result, the lowest coercivity was observed in Fe80.5Si3.63B13.54C2.33 at.% and the highest saturation magnetization was obtained Fe81.83Si3.63B12.63C1.91at.% with R2 values of 0.74 and 0.878, respectively.
    Źródło:
    Archives of Metallurgy and Materials; 2022, 67, 4; 1459--1463
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simple synthesis of Black TiO2 Nanofibers Via Calcination in Inert Atmosphere
    Autorzy:
    Ji, Myeongjun
    Kim, Eung Ryong
    Park, Mi-Jeong
    Jeon, Hee Yeon
    Moon, Jaeyun
    Byun, Jongmin
    Lee, Young-In
    Powiązania:
    https://bibliotekanauki.pl/articles/2174573.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    black TiO2
    nanofibers
    electrospinning
    calcination
    atmosphere
    Opis:
    Black TiO2 nanofibers have recently emerged as a promising material that has both advantages of black metal oxide and one-dimensional nanostructure. However, current reduction-based synthesis approaches are not compatible with practical applications because these processes require high process costs, complicated processes, and sophisticated control. Therefore, it is still necessary to develop a simple and facile method that can easily introduce atomic defects during the synthesis process. This work suggests an electrospinning process with an antioxidant and subsequent calcination process for the facile synthesis of black TiO2 nanofibers. The synthesized black TiO2 nanofiber has an average diameter of 50.3 nm and a rutile structure. Moreover, this nanofiber represented a noticeable black color and a bandgap of 2.67 eV, clearly demonstrating the bandgap narrowing by the introduced atomic defects.
    Źródło:
    Archives of Metallurgy and Materials; 2022, 67, 4; 1481--1486
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Prediction of Optimized Metalloid Content in Fe-Si-B-P Amorphous Alloys Using Artificial Intelligence Algorithm
    Autorzy:
    Lee, Min_Woo
    Choi, Young-Sin
    Kwon, Do-Hun
    Cha, Eun-Ji
    Kang, Hee-Bok
    Jeong, Jae-In
    Lee, Seok-Jae
    Kim, Hwi-Jun
    Powiązania:
    https://bibliotekanauki.pl/articles/2176648.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Fe-based amorphous alloy
    metalloid elements
    artificial intelligence
    coercivity
    saturation magnetization
    Opis:
    Artificial intelligence operated with machine learning was performed to optimize the amount of metalloid elements (Si, B, and P) subjected to be added to a Fe-based amorphous alloy for enhancement of soft magnetic properties. The effect of metalloid elements on magnetic properties was investigated through correlation analysis. Si and P were investigated as elements that affect saturation magnetization while B was investigated as an element that affect coercivity. The coefficient of determination R2 (coefficient of determination) obtained from regression analysis by learning with the Random Forest Algorithm (RFR) was 0.95 In particular, the R2 value measured after including phase information of the Fe-Si-B-P ribbon increased to 0.98. The optimal range of metalloid addition was predicted through correlation analysis method and machine learning.
    Źródło:
    Archives of Metallurgy and Materials; 2022, 67, 4; 1539--1542
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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