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Wyszukujesz frazę "Cieplak, M" wg kryterium: Autor


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

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