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    Wyświetlanie 1-9 z 9
    Tytuł:
    Changes of cytotoxicity of Ti-6Al-4V alloy made by DMLS technology as effect of the shot peening
    Autorzy:
    Żebrowski, R.
    Walczak, M.
    Drozd, K.
    Jarosz, M.J.
    Powiązania:
    https://bibliotekanauki.pl/articles/28762981.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Medycyny Wsi
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2020, 27, 4; 706-712
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of the Shot Peening on Surface Properties and Tribological Performance of Ti-6Al-4V Alloy Produced by Means of DMLS Technology
    Autorzy:
    Żebrowski, R.
    Walczak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/351652.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    additive manufacturing
    shot peening
    titanium alloys
    wear
    tribology
    Opis:
    The purpose of the present paper was to investigate the effect of shot peening on the condition of the surface layer and abrasion resistance of specimens made of Ti-6Al-4V titanium alloy produced by Direct Metal Laser Sintering (DMLS) process. The specimens have been produced by means of EOSINT M280 system dedicated for laser sintering of metal powders and their surfaces have been subjected to the shot peening process under three different working pressures (0.2, 0.3 and 0.4 MPa) and by means of three different media i.e. CrNi steel shot, crushed nut shells and ceramic balls. The specimens have been subjected to profilometric analysis, to SEM examinations, microhardness tests and to tribological tests on ball-on-disc stand in Ringer fluid environment. The general results of all tests indicate to favourable effect of shot peening process on the hardness and tribological performance of titanium alloy.
    Źródło:
    Archives of Metallurgy and Materials; 2019, 64, 1; 377-386
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Measurements of fast electron beams and soft X-ray emission from plasma-focus experiments
    Autorzy:
    Surała, W.
    Sadowski, M. J.
    Kwiatkowski, R.
    Jakubowski, L.
    Żebrowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/147850.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    electron beams
    X-ray emission
    plasma focus
    hot spots
    Opis:
    The paper reports results of the recent experimental studies of pulsed electron beams and soft X-rays in plasma-focus (PF) experiments carried out within a modifi ed PF-360U facility at the NCBJ, Poland. Particular attention was focused on time-resolved measurements of the fast electron beams by means of two different magnetic analyzers, which could record electrons of energy ranging from about 41 keV to about 715 keV in several (6 or 8) measuring channels. For discharges performed with the pure deuterium fi lling, many strong electron signals were recorded in all the measuring channels. Those signals were well correlated with the fi rst hard X-ray pulse detected by an external scintillation neutron-counter. In some of the analyzer channels, electron spikes (lasting about dozens of nanoseconds) and appearing in different instants after the current peculiarity (so-called current dip) were also recorded. For several discharges, fast ion beams, which were emitted along the z-axis and recorded with nuclear track detectors, were also investigated. Those measurements confi rmed a multibeam character of the ion emission. The time-integrated soft X-ray images, which were taken side-on by means of a pinhole camera and sensitive X-ray fi lms, showed the appearance of some fi lamentary structures and so-called hot spots. The application of small amounts of admixtures of different heavy noble gases, i.e. of argon (4.8% volumetric), krypton (1.6% volumetric), or xenon (0.8% volumetric), decreased intensity of the recorded electron beams, but increased intensity of the soft X-ray emission and showed more distinct and numerous hot spots. The recorded electron spikes have been explained as signals produced by quasi-mono-energetic microbeams emitted from tiny sources (probably plasma diodes), which can be formed near the observed hot spots.
    Źródło:
    Nukleonika; 2016, 61, 2; 161-167
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Research on spatial and energetic characteristics of the ion beams emitted in the PF - 360 discharges
    Autorzy:
    Kwiatkowski, R.
    Skladnik-Sadowska, E.
    Malinowski, K.
    Sadowski, M. J.
    Czaus, K.
    Zebrowski, J.
    Garkusha, I. E.
    Powiązania:
    https://bibliotekanauki.pl/articles/147918.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    ion beams
    PF-360 facility
    ion pinhole images
    Opis:
    Experimental results are presented on the spatial structure and energetic characteristics of the fast ion beams produced by high-current discharges in a PF-360 device operated at the National Centre for Nuclear Research (NCBJ, Otwock/Świerk, Poland). The 105 kJ discharges were initiated at the initial deuterium pressure around p0 = 6 hPa and were powered from a 234 miF capacitor bank charged up to 30 kV. The spatial structure of the ion beams was recorded using pinhole cameras equipped with the solid-state nuclear track detectors of the PM-355 type, placed at two different angles (0 centigrade, 45 centigrade) relative to the discharge axis. The detectors were shielded by thin absorption filters made of pure Al foils of various thickness, which made it possible to record only ions with energies exceeding a chosen threshold value. Similarly as in other plasma focus (PF) experiments, energies of the emitted ions ranged from about 30 keV to about 3 MeV, i.e. they were much higher than the voltage applied to the electrodes. The recorded ion images showed a complex spatial structure of the fast ion beams, which consisted of many micro-beams of different energies. It is possible that these beams were emitted by various local micro-sources (e.g. plasma micro-diodes) the were formed inside the PF pinch column.
    Źródło:
    Nukleonika; 2012, 57, 1; 67-74
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Time - and space - resolved measurements of high - energy ion beams emitted from PF - type discharges
    Autorzy:
    Kwiatkowski, R.
    Sadowski, M. J.
    Skladnik-Sadowska, E.
    Zebrowski, J.
    Malinowski, K.
    Czaus, K.
    Garkusha, I. E.
    Powiązania:
    https://bibliotekanauki.pl/articles/147518.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    ion beams
    miniature scintillation detectors
    PF-360 facility
    Opis:
    The paper presents experimental studies of the spatial-microstructure and temporal-characteristics of fast ion beams, which are emitted from high-current plasma-focus (PF) discharges performed within the PF-360 facility at National Centre for Nuclear Research (NCBJ) at Otwock/Świerk, Poland. The spatial structure of the ion beams was investigated by means of pinhole cameras equipped with solid-state nuclear track detectors shielded by absorption filters made of Al-foils of different thickness. In order to perform time-resolved measurements there were applied miniature scintillation detectors placed at different points of the ion-image plane.
    Źródło:
    Nukleonika; 2012, 57, 2; 211-214
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Measurements of electron and ion beams emitted from the PF-1000 device in the upstream and downstream direction
    Autorzy:
    Kwiatkowski, R.
    Skladnik-Sadowska, E.
    Malinowski, K.
    Sadowski, M. J.
    Czaus, K.
    Zebrowski, J.
    Karpinski, L.
    Paduch, M.
    Scholz, M.
    Garkusha, I. E.
    Kubeš, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/146626.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    electron beam (EB)
    ion beams
    PF-1000 facility
    magnetic analyzer
    ion pinhole cameras (IPC)
    Opis:
    In this paper we report on measurements of the energy spectra and other properties of the electron and fast ion beams emitted in the upstream and downstream direction along the z-axis of a large plasma focus device PF-1000, that was operated at 21-27 kV, delivering 290–480 kJ pulse. Measurements of the electron beam (EB) properties were performed using a magnetic analyzer. Properties of the ion beams were measured by means of pinhole cameras equipped with PM-355 nuclear track detectors and placed at various angles (0, 60 and 180 centigrade) to the discharge axis. Measurements revealed a complex spatial structure of the fast ion beams. The ion measurements behind the PF-1000 collector proved that some fast deuterons are emitted also in the upstream direction. Measurements of the EBs emitted in the upstream and downstream direction revealed electron energies in the range from approximately 40 keV to approximately 800 keV. These spectra confirm that in localized regions within the PF-1000 plasma column there appear strong fields accelerating charged particles in different directions along the discharge axis.
    Źródło:
    Nukleonika; 2011, 56, 2; 119-123
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of characteristics of pulsed ion beams emitted from different small PF devices
    Autorzy:
    Sadowski, M.
    Skladnik-Sadowska, E.
    Baranowski, J.
    Zebrowski, J.
    Kelly, H.
    Lepone, A.
    Marquez, A.
    Milanese, M.
    Moroso, R.
    Pouzo, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/146809.pdf
    Data publikacji:
    2000
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    Faraday cups
    ion beams
    plasma focus
    Thomson analyzers
    track detectors
    Opis:
    The paper concerns studies of pulsed ion beams emitted from different small-energy (5–50 kJ) devices of the plasma focus (PF) type. Emission characteristics of the ion beams as measured with nuclear track detectors (NTDs), Faraday-type collectors (FC), and Thomson-type analyzers, are summarized. Common features of the ion emission are considered and some differences are discussed.
    Źródło:
    Nukleonika; 2000, 45, 3; 179-184
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bóle krzyża u australijskich pilotów śmigłowców wojskowych; a Preliminary Study : badania wstępne
    Autorzy:
    Thomae, M. K.
    Porteous, J. E.
    Brock, J. R.
    Allen, G. D.
    Heller, R. F.
    Powiązania:
    Polski Przegląd Medycyny Lotniczej 1998, nr 4, s. 457-458
    Współwytwórcy:
    Żebrowski, Mariusz. Opracowanie
    Data publikacji:
    1998
    Tematy:
    Medycyna wojskowa lotnicza
    Opis:
    Oprac. art. zamieszcz. w "Aviation, Space, and Environmental Medicine .- 1998, May, s. 468-473.
    Dostawca treści:
    Bibliografia CBW
    Artykuł
    Tytuł:
    On the Route to Chaos for Domain Walls with a Model of Stray Field
    Autorzy:
    Sukiennicki, A.
    Kosiński, R. A.
    Żebrowski, J. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1931285.pdf
    Data publikacji:
    1994-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    05.45.+b
    75.10.Hk
    75.60.Ch
    Opis:
    The route to chaos of domain wall in thin magnetic film, which is described by Słonczewski's equations of motion, is analyzed numerically. Hagedorn's model of surface stray field is applied. Ranges of periodic and chaotic wall motion as a function of constant in time, drive field are found. Comparison of results with those obtained for Hubert's model of the stray field is made.
    Źródło:
    Acta Physica Polonica A; 1994, 85, 5; 791-796
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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