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    Wyświetlanie 1-3 z 3
    Tytuł:
    EPR Study of Dealuminated HY Zeolite and Silica Containing Cu-Mn-Zn Spinels: The Effect of Support
    Autorzy:
    Decyk, P.
    Więckowski, A.
    Najder-Kozdrowska, L.
    Bilkova, I.
    Ziółek, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1030220.pdf
    Data publikacji:
    2017-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    68.43.-h
    76.30.-v
    76.30.Fc
    82.75.Vx
    Opis:
    A mixture of antiferromagnetic Cu_{1.4}Mn_{1.6}O₄ and Cu_{0.5}Zn_{0.5}Mn₂O₄ or/and ZnMn₂O₄ spinels was prepared. Dealuminated HY zeolite and silica were doped by these Cu-Mn-Zn spinels. The materials were investigated by X-ray diffraction, the Fourier transform infrared spectroscopy and EPR spectroscopy. Additionally, all the samples were tested for their activity for isopropyl alcohol dehydration/dehydrogenation. Three EPR signals were observed for Cu-Mn-Zn/dealuminated HY and Cu-Mn-Zn/SiO₂ samples at 293 K. In contrast to the spectra recorded at 293 K, only one broad line attributed to Cu-Mn-Zn spinels was visible at 77 K. The EPR signal from pure Cu-Mn-Zn spinels consists only of a single broad line when recorded at 293 K, whereas at 77 K the line is narrower. For all samples subjected to evacuation at high vacuum up to 573 K, the Cu-Mn-Zn spinels were stable. The evacuation at 673 K resulted in a rapid lowering of the intensity of EPR spectrum.
    Źródło:
    Acta Physica Polonica A; 2017, 132, 1; 38-44
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Solvatochromic Effect in a Benzimidazole-Based Betaine: Determination of the Dipole Moments and Second-Order Hyperpolarizability
    Autorzy:
    Ziółek, L.
    Palewska, K.
    Lipiński, J.
    Sworakowski, J.
    Nes̆půrek, S.
    Böhm, S.
    Meister, E. C.
    Powiązania:
    https://bibliotekanauki.pl/articles/1933559.pdf
    Data publikacji:
    1995-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.70.Jk
    33.20.-t
    42.65.An
    78.40.-q
    Opis:
    Results of measurements of the solvent-dependent shift of the low-energy absorption band solvatochromic effect in a benzimidazole-based betaine are reported in the paper. Measurements of absorption spectra in several solvents of different polarities were performed. The solvatochromic shift of the low-lying absorption band was found to exceed 3000 cm$\text{}^{-1}$; the results obtained were then employed to calculate the ground- and excited-state dipole moment of the molecule. The spectroscopic measurements were supplemented by measurements of the ground-state dipole moment. A remarkable change in the charge distribution was found to occur upon the electronic excitation: both the experimental results and the calculations indicate that the ground-state dipole moment is close to 13 D, whereas in the excited state it amounts to ca. 3 D. The second-order hyperpolarizability of the molecule was calculated from the measurements; its off-resonance value amounts to ca. 20 × 10$\text{}^{-40}$ m$\text{}^{4}$/V (4.8 × 10$\text{}^{-30}$ esu), depending on the solvent used.
    Źródło:
    Acta Physica Polonica A; 1995, 88, 2; 283-293
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On a Virtuous Official and a Good Citizen: Canon Augustyn Lipiński’s Philosophy of Exercising Power (Based on the Sermon Preached in Krakow on 8th May 1810)
    Autorzy:
    Ziółek, Ewa M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1798796.pdf
    Data publikacji:
    2019-10-30
    Wydawca:
    Katolicki Uniwersytet Lubelski Jana Pawła II. Towarzystwo Naukowe KUL
    Tematy:
    Duchy of Warsaw; the Church in the Duchy of Warsaw; Polish sermons
    Opis:
    The Polish version of the article was published in Roczniki Humanistyczne 61 (2013), issue 2. This article is devoted to a presentation of the contents of one of the political sermons preached in Krakow Cathedral on 8th May 1810. A Cathedral Canon, Rev. Augustyn Lipiński delivered it on the feast of St Stanislaus in the presence of King Frederick Augustus I of Saxony and Duke of Warsaw, his court and the dignitaries who accompanied him: the Minister of War, Prince Józef Poniatowski, the Prefect of the Krakow Department, Prince Henryk Lubomirski, and many department and municipal officials. In its content the sermon was devoted to authority and the way to exercise it. It is constructed as a polemic with contemporary currents striving after secularization of the ethos of the official. The preacher expressed his conviction that a virtuous official and a good citizen are ones who regard the good of the country and of their fellow-citizens more highly than their own good or even their lives; they are ready to serve them and the king who is exercising power by the will of Providence, and they never look to their own gain in this service – either material profits or fame.
    Źródło:
    Roczniki Humanistyczne; 2019, 67, 2 Selected Papers in English; 67-77
    0035-7707
    Pojawia się w:
    Roczniki Humanistyczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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