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    Wyświetlanie 1-6 z 6
    Tytuł:
    The Bending, Impact Fracture Behavior and Characteristics of Stainless Steel Clad Plates with Different Rolling Temperature
    Autorzy:
    An, Q.
    Fan, K. Y.
    Ge, Y. F.
    Liu, B. X.
    He, J.
    Wang, S.
    Chen, C. X.
    Ji, P. G.
    Tolochko, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/2049433.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    stainless steel clad plate
    interface characteristics
    bending behavior
    impact morphologies
    delamination crack
    Opis:
    The interface characteristics, bending and impact behavior, as well as fracture characteristics of stainless steel clad plates fabricated by vacuum hot rolling at different rolling temperatures of 1100°C, 1200°C and 1300°C are investigated in detail. The interface bonding strength is gradually increased with the increasing rolling temperature due to the sufficient diffusion behavior of alloy element. The bending toughness and impact toughness are gradually decreased, while the bending strength increase with the increase of the rolling temperature, which is attributed to mechanisms of matrix softening and interface strengthening at high rolling temperature. Due to the weak interface at 1100°C, the bending and impact crack propagation path was displaced by delamination cracks, which in turn lead to reduction in stress intensity of the main crack, playing an effective role in toughening the stainless steel clad plates. Moreover, the impact fracture morphologies of clad plates show a typical ductile-brittle transition phenomenon, which is attributed to the matrix softening behavior with the increasing rolling temperature.
    Źródło:
    Archives of Metallurgy and Materials; 2021, 66, 1; 229-239
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Excitonic Magnetoabsorption of Cylindrical Quantum Disks
    Autorzy:
    Schillak, P.
    Czajkowski, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1492888.pdf
    Data publikacji:
    2011-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.67.Hc
    73.22.Dj
    73.21.La
    71.35.Ji
    Opis:
    We show how to compute the optical functions (the complex magnetosusceptibility, dielectric function, magnetoreflection) for semiconductor quantum disks exposed to a uniform magnetic field in the growth direction, including the excitonic effects. The method uses the microscopic calculation of nanostructure excitonic wave functions and energy levels, and the macroscopic real density matrix approach to compute the electromagnetic fields and susceptibilities. The electron-hole screened Coulomb potential is adapted and the valence band structure is taken into account in the cylindrical approximation, thus separating light- and heavy-hole motions. The confinement potentials are taken as step-like both in the z and in-plane directions. Numerical calculations have been performed for $In_{0.55}Al_{0.45}As$ (disk)/$Al_{0.35}Ga_{0.65}As$ (barrier) and InP/GaP disks and the results are in a good agreement with the available experimental data.
    Źródło:
    Acta Physica Polonica A; 2011, 120, 5; 888-890
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optical Anisotropy of Quantum Disks in the External Static Magnetic Field
    Autorzy:
    Schillak, P.
    Czajkowski, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1811986.pdf
    Data publikacji:
    2008-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.35.Cc
    71.35.Ji
    73.21.La
    78.20.Ls
    78.67.Hc
    Opis:
    We show how to compute the optical functions (the complex magneto-susceptibility, dielectric function, magneto-reflection and ellipsometric spectra) for semiconductor quantum disks exposed to a uniform magnetic field in the growth direction, including the excitonic effects. The optical response is calculated for an oblique incidence of the propagating electromagnetic wave and for input waves with different polarization. The method uses the microscopic calculation of nanostructure excitonic wave functions and energy levels, and the macroscopic real density matrix approach to compute the electromagnetic fields and susceptibilities. The electron-hole screened Coulomb potential is adapted and the valence band structure is taken into account in the cylindrical approximation, thus separating light- and heavy-hole motions. The novelty of our approach is that the solution is obtained in terms of known one-particle electron and hole eigenfunctions, since, in the considered nanostructure due to confinement effects accompanied by the e-h Coulomb interaction, the separation of the relative- and center-of-mass motion is not possible. We obtain both the eigenvalues and the eigenfunctions. The convergence of the proposed method is examined. We calculate the magnetooptical functions, including the optical Stokes parameters and ellipsometric functions for the case of oblique incidence. Numerical calculations were performed for InAs (disk)/ GaAs (barrier) disks. A good agreement with experiments was obtained.
    Źródło:
    Acta Physica Polonica A; 2008, 114, 5; 1349-1354
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Exciton Exchange between Nearly-Free and Acceptor-Bound States of a Positive Trion Assisted by Cyclotron Excitation
    Autorzy:
    Jadczak, J.
    Bryja, L.
    Wójs, A.
    Bartsch, G.
    Yakovlev, D. R.
    Bayer, M.
    Plochocka, P.
    Potemski, M.
    Reuter, D.
    Wieck, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2047925.pdf
    Data publikacji:
    2011-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    73.20.Mf
    71.35.Ji
    71.35.Pq
    78.20.Ls
    Opis:
    In magneto-photoluminescence spectra of a two-dimensional hole gas in a GaAs quantum well we observe coupling of two different radiative states. The pair of coupled states are an acceptor-bound trion AX$\text{}^{+}$ and an essentially free (only weakly localized by a shallow lateral potential) trion X$\text{}^{+}$, brought into resonance by an additional cyclotron excitation controlled by the magnetic field. The coupling mechanism is the exciton transfer, and the optical signature is a clear anticrossing of the emission lines of an X$\text{}^{+}$ and a cyclotron replica of the AX$\text{}^{+}$.
    Źródło:
    Acta Physica Polonica A; 2011, 119, 5; 600-601
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microwave-Induced Delocalization of Excitons in Ternary Compounds of II-VI and III-V Semiconductors
    Autorzy:
    Ivanov, V. Yu.
    Godlewski, M.
    Khachapuridze, A.
    Yatsunenko, S.
    Wojtowicz, T.
    Karczewski, G.
    Bergman, J. P.
    Monemar, B.
    Shamirzaev, T.
    Zhuravlev, K.
    Leonardi, K.
    Hommel, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/2035757.pdf
    Data publikacji:
    2003-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.35.Ji
    72.25.Rb
    76.70.Hb
    78.55.Et
    Opis:
    In this work we employ technique of optically detected cyclotron resonance for evaluation of the role of localization processes in CdTe/CdMnTe and CdMnTe/CdMgTe quantum well structures. From microwave-induced changes of excitonic emissions we evaluate magnitude of potential fluctuations (Stokes shift), correlate optically detected cyclotron resonance results with the results of time-resolved experiments and discuss nature of recombination processes in the limit of a strong localization.
    Źródło:
    Acta Physica Polonica A; 2003, 103, 6; 559-566
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fulfilment of goals on the integrated product policy in Poland in comparison to other European Union member states
    Stan realizacji celów Zintegrowanej Polityki Produktowej w Polsce na tle innych krajów Unii Europejskiej
    Autorzy:
    Słonimiec, J.
    Szatkowska, P.
    Stępień, N.
    Urban, J.
    Dobosz, S.
    Biernacki, G.
    Ji, H. Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/1205734.pdf
    Data publikacji:
    2015
    Wydawca:
    STE GROUP
    Tematy:
    integrated product policy
    IPP
    eco-labeling
    green public procurements
    green premiums
    ecological taxes
    Eco-Management and Audit scheme
    EMAS
    Zintegrowana Polityka Produktowa
    ZPP
    ekoznakowanie
    zielone zamówienia publiczne
    podatki ekologiczne
    opłaty ekologiczne
    System Ekozarządzania i Audytu
    Opis:
    The paper presents the progress of implementation of the Integrated Product Policy in Poland in comparison to other European Union member states. It provides a detailed evaluation of certain IPP instruments, i.e. taxes and green premiums, EMAS scheme, eco-labeling and green public procurements. The paper also provides an assessment of the progress of implementation activities and requests further studies in this respect.
    Praca przedstawia stan realizacji wdrażania Zintegrowanej Polityki Produktowej w Polsce na tle działań państw członkowskich Unii Europejskiej. Szczegółowo ocenia niektóre instrumenty ZPP tj. podatki i opłaty ekologiczne, system EMAS, ekoznakowanie oraz zielone zamówienia. Ocenia stan zaawansowania działań wdrożeniowych oraz wnioskuje o pogłębienie badań tych zagadnień.
    Źródło:
    Management Systems in Production Engineering; 2015, 4 (20); 197-201
    2299-0461
    Pojawia się w:
    Management Systems in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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