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    Wyświetlanie 1-29 z 29
    Tytuł:
    Superwystrzymałe białko śrubuje rekord
    Autorzy:
    Cieplak, M
    Powiązania:
    https://bibliotekanauki.pl/articles/273433.pdf
    Data publikacji:
    2013
    Wydawca:
    Roble
    Tematy:
    białka
    stabilność mechaniczna
    wytrzymałość na rozciąganie
    protein
    mechanical stability
    tensile strength
    Źródło:
    LAB Laboratoria, Aparatura, Badania; 2013, 18, 3; 18-19
    1427-5619
    Pojawia się w:
    LAB Laboratoria, Aparatura, Badania
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Tests of the Structure-Based Models of Proteins
    Autorzy:
    Cieplak, M.
    Sułkowska, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1808305.pdf
    Data publikacji:
    2009-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    87.80.Nj
    87.15.ap
    87.14.E-
    Opis:
    The structure-based models of proteins are defined through the condition that their ground state coincides with the native structure of the proteins. There are many variants of such models and they yield different properties. Optimal variants can be selected by making comparisons to experimental data on single-molecule stretching. Here, we discuss the 15 best performing variants and focus on fine tuning the selection process by adjusting the velocity of stretching to match the experimental conditions. The very best variant is found to correspond to the 10-12 potential in the native contacts with the energies modulated by the Miyazawa-Jernigan statistical potential and variable length parameters. The second best model incorporates the Lennard-Jones potential with uniform amplitudes. We then make a detailed comparison of the two models in which theoretical surveys of stretching properties of 7510 proteins were made previously.
    Źródło:
    Acta Physica Polonica A; 2009, 115, 2; 441-445
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Universal test stand for research of aeronautical multi - power path gear demonstrators
    Autorzy:
    Kozik, B.
    Budzik, G.
    Cieplak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/246565.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    test stand
    multi-power path gear
    demonstrator
    Opis:
    Gears used for the tests may be made of metal or plastic [1, 2, 5]. The stand has been designed in an open system and it is powered by a three-phase electric motor. The control is provided by a single-phase inverter with three outputs, which provides full speed control. All components have been installed on a table equipped with T-slots in order to determine the optimal position of the drive and the tested gear. The load of the stand is realized by an electromagnetic powder brake. Load torque of the gear depends on the supplied current. During the test, you can change settings such as speed or load torque. Torque meters installed on input and output of the demonstrator let you control the work of the whole gear. Values supplied by the torque meters (torque and speed) are recorded on a computer in real time (according to PC RTC) and archived by specialized software. The software installed on your computer allows you to view results of the measurements. The possibility to control working time lets you precisely define the time intervals of various stages of the research. Using timer makes it possible to observe the current consumption of the transmission and helps to establish the research process. Thanks to data, recording you will know when the gear is damaged. Tests at this stand allow for obtaining stable working parameters, and thus for obtaining not distorted, accurate results of the demonstrator operation. Changing the gear is exceptionally simple because of the use of sliding splined connections of the couplings. Separating couplings between which the gear is situated and unlocking, the terminal allows exchanging it.
    Źródło:
    Journal of KONES; 2012, 19, 3; 233-238
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A universal stand for air gear test made in Rapid Prototyping process
    Uniwersalne stanowisko do badań przekładni lotniczych wykonanych w procesie Rapid Prototyping
    Autorzy:
    Budzik, G.
    Kozik, B.
    Cieplak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/327802.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    diagnostics
    production
    universal stand
    rapid prototyping
    RP
    air gear
    diagnostyka
    wytwarzanie
    stanowisko uniwersalne
    Rapid Prototyping
    przekładnia lotnicza
    Opis:
    This paper presents a universal stand to diagnose air gear models made in the process of Rapid Prototyping (RP) at the production stage. The stand is designed in an open system, powered by a three-phase electric motor with a power of 0.75 kW, whose speed is controlled by a single-phase inverter. The stand is equipped with two measuring shafts, connected directly to a recorder RMC that allow you to read values torque and rpm in real time. Between this measuring shafts installed a gear reducer to allow the exchange of tested pair of gears. Powder brake with variable speed control is installed on the output as a load. Responsible for data acquisition software is copyright RMC-M - Monitor, which allows you to preview the results of measurements and print them in a report. Trials conducted on the universal test stand for air gears demonstrators give reproducible, stable work parameters and thus enable to obtain uninterrupted, accurate measurements.
    W niniejszym artykule przedstawiono uniwersalne stanowisko do diagnostyki na etapie wytwarzania modeli przekładni lotniczych wykonanych w procesie Rapid Prototyping (RP). Stanowisko zaprojektowane w układzie otwartym napędza trójfazowy silnik elektryczny o mocy 0,75kW, którego obroty regulowane są za pomocą jednofazowego falownika. Stanowisko wyposażono w dwa momentomierze, podłączone bezpośrednio do rejestratora RMC, które umożliwiają odczyt wartości momentu i obrotów w czasie rzeczywistym. Między momentomierzami zainstalowano przekładnię reduktora umożliwiającą wymianę badanej pary kół zębatych. Jako obciążenie zamontowano na wyjściu hamulec proszkowy z płynną regulacją obrotów. Za akwizycję danych odpowiedzialne jest autorskie oprogramowanie RMC-M –Monitor, które umożliwia podgląd wyników pomiarów i ich wydruk w formie raportu. Próby prowadzone na uniwersalnym stanowisku do badań demonstratorów przekładni lotniczych pozwalają na uzyskanie powtarzalnych, stabilnych parametrów pracy i tym samym na otrzymanie niezakłóconych, dokładnych wyników pomiarów.
    Źródło:
    Diagnostyka; 2015, 16, 2; 27-30
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Doping Effects of Co, Ni, and Cu in $FeTe_{0.65}Se_{0.35}$ Single Crystals
    Autorzy:
    Bezusyy, V.
    Gawryluk, D.
    Berkowski, M.
    Cieplak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1431291.pdf
    Data publikacji:
    2012-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    74.25.F-
    74.25.Op
    74.62.Dh
    74.70.Xa
    Opis:
    The resistivity, magnetoresistance, and magnetic susceptibility are measured in single crystals of $FeTe_{0.65}Se_{0.35}$ with Cu, Ni, and Co substitutions for Fe. The crystals are grown by Bridgman's method. The resistivity measurements show that superconductivity disappears with the rate which correlates with the nominal valence of the impurity. From magnetoresistance we evaluate doping effect on the basic superconducting parameters, such as upper critical field and coherence length. We find indications that doping leads to two component superconducting behavior, possibly because of local charge depression around impurities.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 4; 816-819
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Enhancement of Flux Pinning in the Superconductor-Ferromagnet Bilayer Nb(Co/Pd)
    Autorzy:
    Syryanyy, Y.
    Zhu, L.
    Cieplak, M.
    Chien, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/1537204.pdf
    Data publikacji:
    2010-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    74.78.-w
    74.78.Fk
    74.25.Ha
    75.70.Kw
    75.70.-i
    75.70.Cn
    75.78.Fg
    Opis:
    The magnetometry and the magnetic force microscopy are used to study the influence of the magnetic domain size on the flux pinning in a superconducting/ferromagnetic bilayer (SFB), in which the S layer is niobium and the F layer is a Co/Pd multilayer with perpendicular magnetic anisotropy. The domain size is pre-defined using the angle-dependent demagnetization. The enhancement of pinning is found to be the strongest, up to a factor of 6, for narrow domains and small magnetic fields. This result differs from the behavior observed in the SFB in which the F layer is Co/Pt. The difference may be attributed to the degree of the disorder in the domain pattern.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 2; 399-401
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of contour number on load carrying capacity of gears in aircraft gearbox demonstrator made by MEM
    Autorzy:
    Budzik, G.
    Kozik, B
    Łączek, A.
    Cieplak, M
    Powiązania:
    https://bibliotekanauki.pl/articles/950153.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    test stand
    Rapid Prototyping (RP)
    aircraft gearbox
    gears
    Opis:
    The paper presents an outcome of load carrying tests of gears in an aircraft gearbox demonstrator made of ABS B601polymer by means of INSPIRE D290 device. These tests checked an influence of an additional number of contours in gear models on durability of cooperating wheel pair during stand tests. The CAD models of the gears for stand tests were made in Autodesk Inventor program and were used as a base for making physical models. Therefore, Inventor files were exported to STL format. The following stage of data preparation was made in Model Wizard. The gears for stand tests were made by means of MEM method on INSPIRE D290 printer. Unlike most devices, this printer makes it possible to control not only the density of the filling in a model, but also to increase the number of contours. ABS polymer was chosen to make the gears. The choice was due to its good properties and because it is commonly used and also because it was possible to make the parts of the gearing at the Rzeszow University of Technology. Subsequently the gear pair was fixed on a test stand. The stand was designed in an open system. It was powered by a three-phase 0.75 kW electric motor. The control was provided by a single-phase inverter. Load on the stand was provided by an electromagnetic powder brake. This paper is a part of implementation of the research task number 4 „Development of a new, simpler and cheaper toothed gear in place of complicated and expensive planetary gears” of the project „Modern material technologies in aerospace industry."
    Źródło:
    Journal of KONES; 2014, 21, 3; 29-34
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Negative Magnetoresistance in the Variable-Range-Hopping Transport of Strongly Underdoped La$\text{}_{2-x}$Sr$\text{}_{x}$CuO$\text{}_{4}$
    Autorzy:
    Malinowski, A.
    Cieplak, M. Z.
    Berkowski, M.
    Guha, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2046779.pdf
    Data publikacji:
    2006-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    74.72.-h
    74.25.Fy
    73.43.Qt
    Opis:
    The in-plane transport of strongly underdoped La$\text{}_{2-x}$Sr$\text{}_{x}$CuO$\text{}_{4}$ films was examined in the magnetic fields up to 14 T and in temperatures down to 1.6 K. While at high temperatures the samples display metallic-like resistivity, the low-T transport is governed by variable-range-hopping mechanism. Careful analysis shows that the temperature dependence of pre-exponential factor in Mott's variable-range-hopping law may not be neglected and that the density of states at the Fermi level can be effectively expressed as g(E-E$\text{}_{F}$)=N$\text{}_{0}$ (E-E$\text{}_{F}$)$\text{}^{p}$, with a small exponent p of the order of 0.1. In the magnetic field parallel to CuO$\text{}_{2}$ planes one of the variable-range-hopping parameter,ρ$\text{}_{0}$, increases by about 20-25%, while the other one, T$\text{}_{0}$, decreases by about 10-15%, resulting in the decrease in total resistivity. This effect may be related to the decrease of the tunneling barrier between different antiferromagnetic clusters in the presence of magnetic field.
    Źródło:
    Acta Physica Polonica A; 2006, 109, 4-5; 611-615
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Vortex Dynamics in Ferromagnetic/Superconducting Bilayers
    Autorzy:
    Cieplak, M.
    Adamus, Z.
    Kończykowski, M.
    Zhu, L.
    Chien, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/1812264.pdf
    Data publikacji:
    2008-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    74.25.Ha
    74.25.Qt
    74.78.Db
    74.78.Fk
    Opis:
    The dependence of vortex dynamics on the geometry of magnetic domain pattern is studied in the superconducting/ferromagnetic bilayers, in which niobium is a superconductor, and Co/Pt multilayer with perpendicular magnetic anisotropy serves as a ferrromagnetic layer. Magnetic domain patterns with different density of domains per surface area and different domain size, w, are obtained for Co/Pt with different thickness of Pt. The dense patterns of domains with the size comparable to the magnetic penetration depth (w≥λ) produce large vortex pinning and smooth vortex penetration, while less dense patterns with larger domains (w ≫ λ) enhance pinning less effectively and result in flux jumps during flux motion.
    Źródło:
    Acta Physica Polonica A; 2008, 114, 1; 23-28
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Iron Substitutions on the Transport Properties of $FeTe_{0.65}Se_{0.35}$ Single Crystals
    Autorzy:
    Bezusyy, V.
    Gawryluk, D.
    Malinowski, A.
    Berkowski, M.
    Cieplak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1374765.pdf
    Data publikacji:
    2014-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    74.25.F-
    74.62.Dh
    74.70.Xa
    Opis:
    We study the ab-plane resistivity and Hall effect in the single crystals of $Fe_{1-y}M_yTe_{0.65}Se_{0.35}$, where M = Co or Ni (0 ≤ y ≤ 0.21). In case of each dopant two types of crystals, with different crystalline quality, are prepared by Bridgman's method using different cooling rates, fast or slow. The impurities suppress the superconducting transition temperature, $T_c$, with different rates. $T_c$ reaches zero at markedly different impurity content: only 3 at.% of Ni, and about 14 at.% of Co. In addition, the suppression is somewhat dependent on the crystal cooling rate. The resistivity at the onset of superconductivity rises only weakly with the Co doping, while it increases 10 times faster for Ni. The Hall coefficient $R_{H}$ is positive for Co doping indicating that hole carriers dominate the transport. For Ni $R_{H}$ changes sign into negative at low temperatures for crystals with the Ni content exceeding 6 at.%. The implications of these results are discussed.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 4a; A-76-A-79
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Impact of Strain on the Superconducting Properties of Strongly Underdoped $La_{2-x}Sr_xCuO_4$ Thin Films
    Autorzy:
    Zaytseva, I.
    Cieplak, M.
    Paszkowicz, W.
    Abal'oshev, A.
    Berkowski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1431516.pdf
    Data publikacji:
    2012-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    74.25.F-
    74.62.En
    74.78.-w
    Opis:
    Using pulsed laser deposition we have grown films of $La_{2-x}Sr_xCuO_4$ with x in close vicinity of the superconductor-insulator transition, x=0.051 and x=0.048, on $SrLaAlO_4$ substrates, and of different thickness d (from 25 nm to 250 nm). The X-ray diffraction shows that for each d the films grow with variable degree of compressive in-plane strain, with the largest strain achieved in thinnest films. The resistivity measurements show strong enhancement of superconductivity with increasing strain, so that the onset of superconductivity at temperature as high as 27 K is observed. With increasing strain the character of resistivity changes from the insulating to metallic.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 4; 858-865
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Metal-Insulator Transition in Zinc-Doped LaSrCuO
    Autorzy:
    Malinowski, A.
    Cieplak, M. Z.
    Berkowski, M.
    Plesiewicz, W.
    Skośkiewicz, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/2046782.pdf
    Data publikacji:
    2006-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    74.72.-h
    71.30.+h
    74.25.Fy
    Opis:
    The magnetotransport in the vicinity of the metal-insulator transition in La$\text{}_{1.85}$Sr$\text{}_{0.15}$Cu$\text{}_{x}$Zn$\text{}_{1-x}$O$\text{}_{4}$ is studied in the mK temperature range. Both longitudinal and transverse magnetoresistance are negative indicating the importance of spin effects. The magnitude of transverse magnetoresistance is larger than the magnitude of longitudinal magnetoresistance, indicating the absence of positive orbital magnetoresistance, in sharp contrast to strongly underdoped La$\text{}_{2-x}$Sr$\text{}_{x}$CuO$\text{}_{4}$. Both transverse and longitudinal magnetoresistance are proportional to the relative change of zero-field conductivity. This suggests that low-temperature localization of carriers may originate in the spin-disorder scattering on the spin droplets around Zn-impurities.
    Źródło:
    Acta Physica Polonica A; 2006, 109, 4-5; 617-621
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Inhomogeneous Magnetic Field Penetration in Superconducting Niobium Films
    Autorzy:
    Abal'osheva, I.
    Abal'oshev, A.
    Cieplak, M.
    Zhu, L.
    Chien, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/1537190.pdf
    Data publikacji:
    2010-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    74.25.Ha
    74.25.Uv
    74.70.Ad
    Opis:
    The peculiarities of magnetic field penetration in the form of fingering or dendritic instabilities are studied by magneto-optical technique in the niobium films of different thickness. It is observed that the reduction of Nb film thickness reduces the threshold field for instabilities, in agreement with the theoretical predictions. In addition, it is shown that the silver overlayer deposited on the top of Nb film leads also to the enhancement of instabilities, in marked contrast to the effect of gold or aluminum overlayers, which are known to suppress instabilities.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 2; 396-398
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microstructure of the Pulsed Laser Deposited LaSrCuO Films
    Autorzy:
    Cieplak, M. Z.
    Abal'oshev, A.
    Zaytseva, I.
    Berkowski, M.
    Guha, S.
    Wu, Q.
    Powiązania:
    https://bibliotekanauki.pl/articles/2046751.pdf
    Data publikacji:
    2006-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    68.55.-a
    68.55.Jk
    68.37.Ps
    Opis:
    The X-ray diffraction and atomic force microscopy are used to examine the microstructure of La$\text{}_{1.85}$Sr$\text{}_{0.15}$CuO$\text{}_{4}$ films grown by pulsed laser deposition on LaSrAlO$\text{}_{4}$ substrates. The films grow with different degrees of built-in strain, ranging from a large compressive to a large tensile in-plain strain. The tensile strain cannot be attributed to a substrate-related strain. The possible origins of the tensile strain are discussed.
    Źródło:
    Acta Physica Polonica A; 2006, 109, 4-5; 573-576
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of the In-Plane Epitaxial Mismatch between the Substrate and the Film on the Properties of YBa$\text{}_{2}$Cu$\text{}_{3}$O$\text{}_{7-δ}$ Films
    Autorzy:
    Abal'osheva, I. S.
    Cieplak, M. Z.
    Adamus, Z.
    Berkowski, M.
    Domukhovski, V.
    Aleszkiewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2046741.pdf
    Data publikacji:
    2006-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    68.55.Jk
    74.25.Sv
    81.15.Aa
    Opis:
    We study the effect of the in-plane epitaxial mismatch between the substrate and the film on the crystallographic structure and the transport properties of YBa$\text{}_{2}$Cu$\text{}_{3}$O$\text{}_{7-δ}$ superconducting films of thicknesses ranging between 600 and 3000Å. The films are grown by pulsed laser deposition on the new type of single-crystalline substrates prepared by Czochralski method, with the chemical formula (SrAl$\text{}_{0.5}$Ta$\text{}_{0.5}$O$\text{}_{3}$)$\text{}_{0.7}$(CaAl$\text{}_{0.5}$Ta$\text{}_{0.5}$O$\text{}_{3}$)$\text{}_{0 .1}$(LaAlO$\text{}_{3}$)$\text{}_{0.2}$. We find that superconducting properties of the samples are excellent, and generally they improve with increasing of the film thickness as a result of improved structural ordering. We also investigate the influence of the film thickness on the behavior of the critical current densities.
    Źródło:
    Acta Physica Polonica A; 2006, 109, 4-5; 549-554
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Strain Relaxation in Thin Films of La$\text{}_{1.85}$Sr$\text{}_{0.15}$CuO$\text{}_{4}$ Grown by Pulsed Laser Deposition
    Autorzy:
    Zaytseva, I.
    Cieplak, M. Z.
    Abal'oshev, A.
    Berkowski, M.
    Domukhovski, V.
    Paszkowicz, W.
    Shalimov, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2047252.pdf
    Data publikacji:
    2007-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    68.55.-a
    74.62.-c
    74.72.Dn
    74.78.Bz
    74.25.Fy
    Opis:
    X-ray diffraction, resistivity, and susceptibility measurements are used to examine the effects of film thickness d (from 17 to 250 nm) on the structural and superconducting properties of La$\text{}_{1.85}$Sr$\text{}_{0.15}$CuO$\text{}_{4}$ films grown by pulsed laser deposition on SrLaAlO$\text{}_{4}$ substrates. For each d the film sgrow with a variable strain, ranging from a large compressive strain in the thinnest films to a negligible or tensile strain in thick films. Our results indicate that the tensile strain is not caused by the off-stoichiometric layer at the substrate-film interface. Instead, it may be caused by the extreme oxygen deficiency in some of the films.
    Źródło:
    Acta Physica Polonica A; 2007, 111, 1; 185-188
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetoresistance of Si/Nb/Si Trilayers
    Autorzy:
    Zaytseva, I.
    Cieplak, M.
    Abal'oshev, A.
    Dluzewski, P.
    Grabecki, G.
    Plesiewicz, W.
    Zhu, L.
    Chien, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/1537220.pdf
    Data publikacji:
    2010-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    74.62.-c
    74.25.F-
    74.25.Ha
    74.62.En
    Opis:
    We study the superconductor-insulator transition in Si/Nb/Si trilayers, in which the thickness of Si is fixed at 10 nm, and the nominal thickness of Nb changes in the range between d = 20 nm down to d = 0.3 nm. The transmission electron microscopy indicates the formation of the mixed Nb-Si layer for small d. Both the thickness-induced, and the magnetic-field induced superconductor-insulator transition is observed. The crossing point of the isotherms at the critical field $B_{c}$ decreases with decreasing d, and it is T-independent at temperatures below 300 mK. At larger fields the weak peak in magnetoresistance appears in some of the films.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 2; 406-408
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimization of the Superconducting Properties of Laser Ablated $YBa_2Cu_3O_{7-δ}$ Films on $CeO_2$-Buffered Sapphire
    Autorzy:
    Abal'osheva, I.
    Zaytseva, I.
    Aleszkiewicz, M.
    Syryanyy, Y.
    Gierłowski, P.
    Abal'oshev, O.
    Bezusyy, V.
    Cieplak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1431267.pdf
    Data publikacji:
    2012-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    74.78.-w
    77.55.Px
    81.15.Fg
    Opis:
    We use pulsed laser deposition to grow $YBa_2Cu_3O_{7-δ}$ (YBCO) superconducting films for microwave applications. The films are grown on R-cut sapphire substrates, with $CeO_2$ buffer layers, which are re-crystallized at high temperature prior to YBCO growth. Using the atomic force microscopy (AFM) and X-ray diffractometry we determine the optimal temperature for recrystallization (1000°C) and the optimal buffer layer thickness (30 nm). The properties of YBCO films of various thickness, grown on the optimized $CeO_2$ buffer layers, are studied using several methods, including AFM, magnetooptical imaging, and transport experiments. The YBCO film roughness is found to increase with the increasing film thickness, but the magnetic flux penetration in the superconducting state remains homogeneous. The superconducting parameters (the critical temperature and the critical current density) are somewhat lower than the similar parameters for YBCO films deposited on mono-crystalline substrates.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 4; 805-807
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Flux Penetration in a Ferromagnetic/Superconducting Bilayer
    Autorzy:
    Adamus, Z.
    Cieplak, M. Z.
    Abal'oshev, A.
    Kończykowski, M.
    Cheng, X. M.
    Zhu, L. Y.
    Chien, C. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/2047227.pdf
    Data publikacji:
    2007-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    74.25.Ha
    74.25.Qt
    74.78.Db
    74.78.Fk
    Opis:
    An array of miniature Hall sensors is used to study the magnetic flux penetration in a ferromagnetic/superconducting bilayer consisting of Nb as a superconducting layer and Co/Pt multilayer with perpendicular magnetic anisotropy as a ferromagnetic layer, separated by an amorphous Si layer to avoid the proximity effect. It is found that the magnetic domains in the ferromagnetic layer create a large edge barrier in the superconducting layer which delays flux penetration. The smooth flux profiles observed in the absence of magnetic pinning change into terraced profiles in the presence of domains.
    Źródło:
    Acta Physica Polonica A; 2007, 111, 1; 95-98
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Superconducting Pinning by Magnetic Domains in a Ferromagnet-Superconductor Bilayer
    Autorzy:
    Cieplak, M. Z.
    Adamus, Z.
    Konczykowski, M.
    Chen, X. M.
    Byczuk, A.
    Abal'oshev, A.
    Sang, Hai.
    Chien, C. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/2041450.pdf
    Data publikacji:
    2004-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    74.25.Ha
    74.25.Qt
    74.78.Db
    74.78.Fk
    Opis:
    The local flux profile and the critical current are studied using an array of Hall sensors in a ferromagnetic-superconducting bilayer which consists of niobium film covering ferromagnetic Co/Pt multilayer with perpendicular magnetic anisotropy. The results indicate about threefold enhancement of the flux pinning in niobium layer caused by the isolated magnetic domains which are created during the magnetization reversal of the Co/Pt multilayer. The geometrical barrier is absent, and the critical current is strongly peaked in close vicinity to the sample center, suggesting that the critical state differs from that predicted by the Bean model.
    Źródło:
    Acta Physica Polonica A; 2004, 106, 5; 693-698
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Vortex Pinning in Ferromagnet/Superconductor Bilayers - the Dependence on the Ferromagnetic Layer and Temperature
    Autorzy:
    Adamus, Z.
    Cieplak, M. Z.
    Abal'oshev, A.
    Berkowski, M.
    Kończykowski, M.
    Cheng, X. M.
    Shu, L. Y.
    Chien, C. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/2046703.pdf
    Data publikacji:
    2006-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    74.25.Ha
    74.25.Qt
    74.78.Db
    74.78.Fk
    Opis:
    The behavior of vortex pinning induced by the magnetic domain reversal is studied in the ferromagnet/superconductor bilayers in which superconducting film is niobium and the ferromagnetic layers are the Co/Pt superlattices with perpendicular magnetic anisotropy. The local magnetic field across narrow ferromagnet/superconductor bilayer stripe is measured using a line of miniature Hall sensors. The pinning is studied for samples with different amount of repeats of Co/Pt superlattice, and as a function of temperature.
    Źródło:
    Acta Physica Polonica A; 2006, 109, 4-5; 451-456
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Growth and Characterization of $YBa_2Cu_3O_{7-δ}$ Films Deposited by Laser Ablation on $CeO_2$-Buffered Sapphire
    Autorzy:
    Abal'osheva, I.
    Zaytseva, I.
    Aleszkiewicz, M.
    Malinowski, A.
    Bezusyy, V.
    Syryanyy, Y.
    Gierłowski, P.
    Abal'oshev, O.
    Kończykowski, M.
    Cieplak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1374756.pdf
    Data publikacji:
    2014-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    74.78.-w
    77.55.Px
    81.15.Fg
    Opis:
    In this work we study the growth, by pulsed laser deposition, of $YBa_2Cu_3O_{7-δ}$ (YBCO) films on the $CeO_2$-buffered R-cut sapphire substrates, with the buffer layer recrystallized prior to the deposition of superconductor. We find that the superconducting critical temperature and the critical current density of the films are very close to similar parameters for the YBCO films grown on lattice-matched single crystalline substrates. It appears that the structural defects in the buffer layer affect the microstructure of YBCO films, resulting in high values of the critical current density, suitable for applications.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 4a; A-69-A-72
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The analysis of hardware optimization methods for improving capabilities and performance of X-Ways forensics toolset
    Analiza możliwości optymalizacji sprzętowej dla uzyskania poprawy wydajności pracy programu X-Ways forensics
    Autorzy:
    Cieplak, A.
    Malec, M.
    Cieplak, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/395705.pdf
    Data publikacji:
    2012
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    computer forensics
    test simulations
    hardware configuration
    informatyka śledcza
    symulacja testowa
    konfiguracja sprzętowa
    Opis:
    In this paper an attempt was made to identify optimal hardware configurationfor a workstation designated to computer forensics expert, using X-Ways Forensics software. To achieve this objective a body of research data on different hardware setups was collected as a result of their performance examination while conducting diverse tasks during test simulations. With the complete research data, it was possible to determine the most optimal hardware configurationfrom all the setups prepared for the test.
    W pracy podjęto próbę ustalenia optymalnej konfiguacji sprzętowej dla stanowiska informatyka śledczego z wykorzystaniem aktualnego, specjalistycznego oprogramowania programu X-Ways Forensics. Aby zrealizować postawiony cel przeprowadzono badania różnych konfiguracji sprzętowych podczas wykonywania wcześniej określonych zadań - symulacji testowych. Po zakończeniu tego etapu prac dokonano analizy wyników badań i przeprowadzono wybór najbardziej optymalnej konfiguracji sprzętowej spośród przygotowanych do testów.
    Źródło:
    Postępy Nauki i Techniki; 2012, 13; 142-153
    2080-4075
    Pojawia się w:
    Postępy Nauki i Techniki
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Applications of cloud computing services in education – case study
    Autorzy:
    Cieplak, T.
    Malec, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/103156.pdf
    Data publikacji:
    2014
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    cloud computing
    education
    Opis:
    Applications of Cloud Computing in enterprises are very wide-ranging. In opposition, educational applications of Cloud Computing in Poland are someway limited. On the other hand, young people use services of Cloud Computing frequently. Utilization of Facebook, Google or other services in Poland by young people is almost the same as in Western Europe or in the USA. Taking into account those considerations, few years ago authors have started process of popularization and usage of Cloud Computing educational services in their professional work. This article briefly summarizes authors’ experience with selected and most popular Cloud Computing services.
    Źródło:
    Advances in Science and Technology. Research Journal; 2014, 8, 24; 55-60
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The view of the technical and computer science specialization in the survey of their students
    Autorzy:
    Malec, M
    Cieplak, T
    Huskowska, M
    Powiązania:
    https://bibliotekanauki.pl/articles/103400.pdf
    Data publikacji:
    2012
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    motives of study
    sources of information about studies
    compliance with faculty student's interests
    Opis:
    The article presents the results of the chosen research of Institute of Technology Students of Technical and Computer Science Specialization with use of questionnaire. For the research were chosen students from the last and the first year of study so that we can define the attitude to specialization and university of students who are finishing the study but also we can define expectations of people who had just begin their studies. Collected data were analyzed with the use of SPSS programme. Keywords: motives of study, sources of information about studies, compliance with the faculty student’s interests.
    Źródło:
    Advances in Science and Technology. Research Journal; 2012, 6, 16; 24-30
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On-the-fly community-driven mobile accelerometer data analysis system for road quality assessment
    Autorzy:
    Badurowicz, M.
    Cieplak, T.
    Montusiewicz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/117790.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Promocji Wiedzy
    Tematy:
    potholes
    accelerometer
    roads quality
    cloud computing
    Opis:
    In this paper the authors are discussing a community-driven system for reporting via smartphones road acceleration data, processed on-the-fly in the cloud computing system for finding possible road artefacts as well as assessing overall road quality on the driver-friendly RRUI scale. The proposed system uses smartphones mounted in a car with little to no calibration or initial setup. By performing a fast analysis in the cloud, data are made immediately available for other users. The system continuously sends to end users' devices data about road quality issues "in exchange" for acceleration information.
    Źródło:
    Applied Computer Science; 2016, 12, 4; 18-27
    1895-3735
    Pojawia się w:
    Applied Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Non-destructive tests of lock tongues used in ATR-72 aircraft landing gear based on magnetic method
    Autorzy:
    Malec, M.
    Cieplak, T.
    Walczuk, S
    Powiązania:
    https://bibliotekanauki.pl/articles/102217.pdf
    Data publikacji:
    2013
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    NDT research
    magnetic-fluorescent method
    wear and tear
    Opis:
    The purpose of this work is to highlight the opportunities of using and analyzing process progression of Non-destructive Testing in aeronautical industries and technologies. This paper concentrates on magnetic-fluorescent method, which is used to showcase the practical test of lock tongue installed in ATR-72 aircraft landing gear.
    Źródło:
    Advances in Science and Technology. Research Journal; 2013, 7, 20; 23-28
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Video materials as a means of promotion and advertising of the fields of study
    Autorzy:
    Malec, M.
    Cieplak, T.
    Jarmuł, Ł.
    Powiązania:
    https://bibliotekanauki.pl/articles/103150.pdf
    Data publikacji:
    2016
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    marketing
    advertisement
    film for promotion
    candidate for studies
    survey research
    Opis:
    In this paper there were presented some information about marketing and advertisement in the aspect of acquiring customers-candidate for studies with the help of the film as a tool of this kind of action. The paper also shows the results of the survey research and their analysis in the scope of expected features which will be characteristic, according to the respondents, for above-mentioned transfer tool.
    Źródło:
    Advances in Science and Technology. Research Journal; 2016, 10, 31; 274-280
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Phase Diagram and Activation Energy for Vortex Pinning in Nb/(Co,Pd) Superconductor-Ferromagnet Bilayer
    Autorzy:
    Syryanyy, Y.
    Aleszkiewicz, M.
    Cieplak, Marta
    Zhu, L.
    Chien, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/1374109.pdf
    Data publikacji:
    2014-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    74.25.F-
    74.25.N-
    74.25.Wx
    74.62.-c
    74.70.-b
    74.78.-w
    74.78.Fk
    75.70.Kw
    75.70.-i
    Opis:
    Using the magnetoresistance measurements we study the phase transition line and the activation energy for vortex pinning in superconductor/ferromagnet bilayer, built of a ferromagnetic Co/Pd multilayer with perpendicular magnetic anisotropy, and a niobium film, with insulating layer in-between to eliminate proximity effect. The domain width is reversibly pre-defined using the angle-dependent demagnetization. We find that the enhancement of the activation energy for vortex pinning by magnetic domains is rather modest, by a factor of about 2.1. We attribute this to large domain width, and large dispersion of the domain width in this bilayer.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 4a; A-123-A-126
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-29 z 29

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