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Wyszukujesz frazę "Karpinski, Z." wg kryterium: Autor


Wyświetlanie 1-4 z 4
Tytuł:
Catalytic activity of Pd-Ni in the oxidation of hydrogen for the safety of Catalytic activity of Pd-Ni in the oxidation of hydrogen for the safety of nuclear power plan
Autorzy:
Łomot, D.
Karpiński, Z.
Powiązania:
https://bibliotekanauki.pl/articles/779451.pdf
Data publikacji:
2016
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
palladium
palladium-nickel
catalyst
hydrogen oxidation
Opis:
Pd-Ni/Al2O3 systems were investigated in the reaction of hydrogen oxidation in terms of their possible application as catalysts used in passive autocatalytic recombiners (PARs) used in nuclear power plants. Testing experiments were carried out in a flowing system at different temperatures and humidity of the reaction mixture. The bimetallic catalysts exhibited higher response to the increase of temperature and higher resistance to inhibit water than the monometallic palladium catalyst. They showed excellent stability during a few tens of hours, similarly, like their monometallic counterpart. Our bimetallic catalysts of hydrogen oxidation can be used as cheaper alternatives to catalysts based on the precious metals in the hydrogen oxidation without loss of their activity over time.
Źródło:
Polish Journal of Chemical Technology; 2016, 18, 1; 15-18
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical analysis of the drag coefficient of a motorcycle helmet
Autorzy:
Czyż, Z.
Karpiński, P.
Sevdim, T.
Powiązania:
https://bibliotekanauki.pl/articles/118113.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
numerical analysis
CFD
drag coefficient
motorcycle helmets
analiza numeryczna
współczynnik oporu
kaski motocyklowe
Opis:
The paper discusses a numerical investigation, using a CFD tool, ANSYS FLUENT, of drag acting on a motorcycle helmet. The simulations were performed on a model of a helmet downloaded from a free CAD model library. A solid model enabled us to generate a mesh, to define boundary conditions and to specify a model of turbulence. Accordingly, the values of forces acting on individual sections of the helmet were obtained and the coefficients of aerodynamic drag were calculated. The test results can be used to optimize the shape of the existing motorcycle helmet construction and to study the impact of generated drag forces on reaction forces affecting a motorcyclist’s body.
Źródło:
Applied Computer Science; 2018, 14, 1; 16-26
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interplay Between Spin Density Wave and Superconductivity in `122 Iron Pnictides: $\text{}^{57}Fe$ Mössbauer Study
Autorzy:
Błachowski, A.
Ruebenbauer, K.
Żukrowski, J.
Bukowski, Z.
Matusiak, M.
Karpinski, J.
Powiązania:
https://bibliotekanauki.pl/articles/1431157.pdf
Data publikacji:
2012-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
74.70.Xa
75.30.Fv
76.80.+y
Opis:
Iron-based superconductors $Ba_{0.7}Rb_{0.3}Fe_{2}As_{2}$ and $CaFe_{1.92}Co_{0.08}As_{2}$ of the `122' family have been investigated by means of the 14.41-keV Mössbauer transition in $\text{}^{57}Fe$ versus temperature ranging from the room temperature till 4.2 K. A comparison is made with the previously investigated parent compounds $BaFe_{2}As_{2}$ and $CaFe_{2}As_{2}$. It has been found that Mössbauer spectra of these superconductors are composed of the magnetically split component due to development of spin density wave and non-magnetic component surviving even at lowest temperatures. The latter component is responsible for superconductivity. Hence, the superconductivity occurs in the part of the sample despite the sample is single phase. This phenomenon is caused by the slight variation of the dopant concentration across the sample (crystal).
Źródło:
Acta Physica Polonica A; 2012, 121, 4; 726-729
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interferometry of the plasma focus equipped with forehead cathode
Autorzy:
Kubeš, P.
Klír, D.
Rezac, K.
Paduch, M.
Pisarczyk, T.
Scholz, M.
Chodukowski, T.
Kalinowska, Z.
Hitschfel, J.
Kortanek, J.
Kravárik, J.
Ivanova-Stanik, I.
Bienkowska, B.
Karpinski, L.
Zielinska, E.
Sadowski, M. J.
Tomaszewski, K.
Powiązania:
https://bibliotekanauki.pl/articles/147512.pdf
Data publikacji:
2012
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
interferometry
neutron diagnostics
plasma focus discharge
Opis:
The PF-1000 plasma-focus facility in Warsaw, equipped with Mather-type coaxial electrodes working with a deuterium filling, was modified by the addition of a cathode disk in front of the anode front-plate at a distance of 3 cm. The plasma was diagnosed with temporal resolved interferometry and neutron diagnostics. The modified electrode configuration showed an increase of the current in the pinch phase and a decrease of the total neutron yield. The lower total neutron yield is caused by a lower energy of deuterons producing the observed neutrons and by a decrease of the velocity of transformations of the structures in the pinch column.
Źródło:
Nukleonika; 2012, 57, 2; 189-192
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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