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    Wyświetlanie 1-21 z 21
    Tytuł:
    Badania mechanizmu jazdy transportera gąsienicowego TUR 600
    Investigation of mechanism of drive crawler transporter TUR 600
    Autorzy:
    Domagała, Z.
    Szepietowski, S. W.
    Powiązania:
    https://bibliotekanauki.pl/articles/169688.pdf
    Data publikacji:
    2013
    Wydawca:
    Poltegor-Instytut Instytut Górnictwa Odkrywkowego
    Tematy:
    przekładnia hydrostatyczna
    napęd hydrostatyczny
    gąsienica
    transporter
    modelowanie
    symulacja
    hydrostatic transmission
    hydrostatic drive
    crawler
    modelling
    simulation
    Opis:
    W publikacji przedstawiono utworzony model symulacyjny hydraulicznego układu napędu mechanizmu jazdy transportera. Opisano badania mechanizmu jazdy transportera, przeprowadzone na rzeczywistym obiekcie w warunkach eksploatacyjnych, w oparciu o które dokonano identyfikacji modelu. Następnie omówiono wyniki badań symulacyjnych, przeprowadzonych w środowisku MatLab Simulink, hydraulicznego układu napędu gąsienic transportera.
    The created simulating model of hydraulic arrangement of drive crawler mechanism drive transporter in publication was moved. It describe the investigation of mechanism of drive transporter, conducted on real object in exploational conditions, in the support about which the identification of model was executed was. It the results of simulating investigations were have talked over was then, the conducted in environment MatLab Simulink, hydraulic arrangement of the crawler’ drive transporter.
    Źródło:
    Górnictwo Odkrywkowe; 2013, 54, 3-4; 31-38
    0043-2075
    Pojawia się w:
    Górnictwo Odkrywkowe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative assessment of point feature detectors in the context of robot navigation
    Autorzy:
    Schmidt, A.
    Kraft, M.
    Fularz, M.
    Domagała, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/950804.pdf
    Data publikacji:
    2013
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    point features
    detectors
    descriptors
    Opis:
    This paper presents evaluation of various contemporary interest point detector and descriptor pairs in the context of robot navigation. The robustness of the detectors and descriptors is assessed using publicly available datasets: the first gathered from the camera mounted on the industrial robot [17] and the second gathered from the mobile robot [20]. The most efficient detectors and descriptors for the visual robot navigation are selected.
    Źródło:
    Journal of Automation Mobile Robotics and Intelligent Systems; 2013, 7, 1; 11-20
    1897-8649
    2080-2145
    Pojawia się w:
    Journal of Automation Mobile Robotics and Intelligent Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On augmenting the visual slam with direct orientation measurement using the 5-point algorithm
    Autorzy:
    Schmidt, A.
    Kraft, A.
    Fularz, M.
    Domagała, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/384310.pdf
    Data publikacji:
    2013
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    visual SLAM
    visual odometry
    Opis:
    This paper presents the attempt to merge two paradigms of the visual robot navigation: Visual Simultaneous Localization and Mapping (VSLAM) and Visual Odometry (VO). The VSLAM was augmented with the direct, visual measurement of the robot orientation change using the 5-point algorithm. The extended movement model of the robot was proposed and additional measurements were introduced to the SLAM system. The efficiency of the 5-point and 8-point algorithms was compared. The augmented system was compared with the state of the art VSLAM solution and the proposed modification allowed to reduce the tracking error by over 30%.
    Źródło:
    Journal of Automation Mobile Robotics and Intelligent Systems; 2013, 7, 1; 5-10
    1897-8649
    2080-2145
    Pojawia się w:
    Journal of Automation Mobile Robotics and Intelligent Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The registration system for the evaluation of indoor visual slam and odometry algorithms
    Autorzy:
    Schmidt, A.
    Kraft, M.
    Fularz, M.
    Domagała, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/384854.pdf
    Data publikacji:
    2013
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    SLAM
    visual odometry
    benchmark
    Opis:
    This paper presents the new benchmark data registra- tion system aimed at facilitating the development and evaluation of the visual odometry and SLAM algorithms. The WiFiBOT LAB V3 wheeled robot equipped with three cameras, XSENS MTi atitude and heading reference system (AHRS) and Hall encoders can be used to gather data in indoor exploration scenarios. The ground truth trajectory of the robot is obtained using the visual motion tracking system. Additional static cameras simulating the surveillance network, as well as artificial markers augmen ting the navigation are incorporated in the system. The datasets registered with the presented system will be freely available for research purposes.
    Źródło:
    Journal of Automation Mobile Robotics and Intelligent Systems; 2013, 7, 2; 46-51
    1897-8649
    2080-2145
    Pojawia się w:
    Journal of Automation Mobile Robotics and Intelligent Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetic Properties of Short Period InGaMnAs/InGaAs Superlattices
    Autorzy:
    Sadowski, J.
    Mathieu, R.
    Svedlindh, P.
    Kanski, J.
    Karlsteen, M.
    Świątek, K.
    Domagała, J. Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/2035614.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.75.+a
    75.50.Pp
    75.25.+z
    Opis:
    We have observed a paramagnetic-to-ferromagnetic phase transition in short period InGaMnAs/InGaAs superlattices. The thicknesses of magnetic InGaMnAs layers in the structures studied was chosen to be 4 or 8 molecular layers (12Å or 24Å). The non-magnetic InGaAs spacer layers are 12Å thick. The composition (In content) in InGaMnAs and InGaAs was chosen in such a way that magnetic layers were: deep potential wells, high potential barriers, or shallow potential wells. For superlattices with 8 monolayer thick InGaMnAs magnetic layers and 4 monolayer thick InGaAs non-magnetic spacers the temperatures of paramagnetic-to-ferromagnetic phase transition do not depend on the band offsets between InGaMnAs and InGaAs adjusted by the In content.
    Źródło:
    Acta Physica Polonica A; 2002, 102, 4-5; 687-694
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Solid Phase Epitaxy of Ferromagnetic MnAs Layer and Quantum Dots on Annealed GaMnAs
    Autorzy:
    Sadowski, J.
    Kanski, J.
    Adell, M.
    Domagała, J. Z.
    Janik, E.
    Łusakowska, E.
    Brucas, R.
    Hanson, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2044534.pdf
    Data publikacji:
    2005-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.10.Jt
    81.15.Hi
    68.65.Hb
    68.37.Ps
    Opis:
    We show that post growth annealing of GaMnAs under As capping at temperatures in the range of 180-210ºC leads to significant surface modifications. Depending on GaMnAs layer thickness and composition, we obtain either a smooth continuous reacted (MnAs) surface layer or 3D islands (quantum dots). The surface modifications are due to a solid phase epitaxial process, in which Mn interstitials diffusing to the GaMnAs surface are bound with the As.
    Źródło:
    Acta Physica Polonica A; 2005, 108, 5; 851-858
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Growth and Properties of ZnMnTe Nanowires
    Autorzy:
    Zaleszczyk, W.
    Janik, E.
    Presz, A.
    Szuszkiewicz, W.
    Morhange, J. F.
    Dłużewski, P.
    Kret, S.
    Kirmse, H.
    Neumann, W.
    Dynowska, E.
    Domagała, J. Z.
    Caliebe, W.
    Aleszkiewicz, M.
    Pacuski, W.
    Golnik, A.
    Kossacki, P.
    Baczewski, L. T.
    Petroutchik, A.
    Karczewski, G.
    Wojtowicz, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/2047697.pdf
    Data publikacji:
    2007-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.46.Df
    68.65.La
    78.55.Et
    78.67.Bf
    81.15.Hi
    Opis:
    Catalytically enhanced growth of ZnMnTe diluted magnetic semiconductor nanowires by molecular beam epitaxy is reported. The growth is based on the vapor-liquid-solid mechanism and was performed on (001) and (011)-oriented GaAs substrates from elemental sources. X-ray diffractometry, scanning and transmission electron microscopy, atomic force microscopy, photoluminescence spectroscopy, and Raman scattering were performed to determine the structure of nanowires, their chemical composition, and morphology. These studies revealed that the obtained ZnMnTe nanowires possess zinc-blende structure, have an average diameter of about 30 nm, typical length between 1 and 2μm and that Mn$\text{}^{2+}$ ions were incorporated into substitutional sites of the ZnTe crystal lattice.
    Źródło:
    Acta Physica Polonica A; 2007, 112, 2; 351-356
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Spatially Resolved X-ray Diffraction Technique for Crystallographic Quality Inspection of Semiconductor Microstructures
    Autorzy:
    Domagala, J.
    Czyzak, A.
    Zytkiewicz, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/1811925.pdf
    Data publikacji:
    2008-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.05.cp
    61.72.Ff
    68.55.ag
    Opis:
    Spatially resolved X-ray diffraction is introduced and applied for micro-imaging of strain in GaAs and GaSb layers grown by epitaxial lateral overgrowth on GaAs substrates. We show that laterally overgrown parts of the layers (wings) are tilted towards the underlying mask. By spatially resolved X-ray diffraction mapping the direction of the tilt and distribution of tilt magnitude across the width of each layer can be readily determined. This allows measuring of the shape of the lattice planes in individual epitaxial stripes. In GaSb/GaAs heteroepitaxial laterally overgrown layers local mosaicity in the wing area was found. By spatially resolved X-ray diffraction the size of microblocks and their relative misorientation were analyzed. Finally, microscopic curvature of lattice planes confined between two neighboring slip bands in thermally strained Si wafers is measured. All these examples show advantages of spatially resolved X-ray diffraction over a standard X-ray diffraction when applied for analysis of crystalline microstructures.
    Źródło:
    Acta Physica Polonica A; 2008, 114, 5; 1101-1107
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The application of a jet fan for the control of air and methane streams mixing at the excavations cross - the results of numerical simulations
    Wspomaganie mieszania strumieni powietrza i metanu na skrzyżowaniu wyrobisk za pomocą wentylatora strumieniowego w ujęciu symulacji numerycznej
    Autorzy:
    Wrona, P.
    Różański, Z.
    Pach, P.
    Domagała, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1205788.pdf
    Data publikacji:
    2016
    Wydawca:
    STE GROUP
    Tematy:
    CFD simulation
    methane
    gas hazard
    jet fan
    Opis:
    The paper presents the results of numerical simulations into the distribution of methane concentration at the intersection of two excavations with a fan (turned on) giving the air stream to the area of the crossing. Assumed case represents emergency situation related to the unexpected flow of methane from an excavation and its mixing with fresh air. It is possible when sudden gas outburst takes place, methane leaks from methane drainage system or gas leaks out the pipelines of underground coal gasification devices. Three options were considered – corresponding to three different speeds of the jet fan. They represent three stages of fan work. First – low air speed is forced by a pneumatic fan, when electricity is cut off after high methane concentration detection. Medium speed can be forced by pneumatic-electric device when methane concentration allows to turn on the electricity. Third, the highest speed is for electric fans. Simulations were carried out in the Fire Dynamics Simulator (FDS) belongs to the group of programs Computational Fluid Dynamics (CFD). The governing equations are being solved in a numerical way. It was shown that proposed solution allows partial dilution of methane in every variant of speed what should allow escape of the miners from hazardous area.
    W artykule przedstawiono wyniki symulacji komputerowych dotyczących zagadnienia rozkładu stężenia metanu przy skrzyżowaniu dwóch wyrobisk z włączonym wentylatorem kierunkującym strugę powietrza w rejon stropu skrzyżowania. Założona sytuacja dotyczyła awaryjnego wypływu metanu z zagazowanego wyrobiska do korytarza, którym płynie powietrze świeże. Taka sytuacja jest możliwa na przykład na skutek nagłego wyrzutu gazów, rozszczelnienia instalacji odmetanowania lub wycieku gazu z instalacji podziemnego zgazowania węgla. Rozpatrzono trzy warianty – odpowiadające trzem różnym prędkościom przepływu powietrza wywołanego pracą wentylatora pomocniczego. Pierwszy wariant dotyczy najmniejszej prędkości powietrza generowanej przez wentylator pneumatyczny, działający po odcięciu zasilania elektrycznego na skutek przekroczenia dozwolonego stężenia metanu. Drugi wariant to większą prędkość powietrza, generowana przez wentylator pneumatyczno-elektryczny. Trzeci wariant stanowi największą prędkość powietrza wytwarzaną przez wentylator elektryczny. Symulacje prowadzono w programie Fire Dynamics Simulator (FDS) należącym do grupy programów Computational Fluid Dynamics (CFD), rozwiązujących w swych algorytmach równania mechaniki płynów w sposób numeryczny. Wykazano, że zastosowanie proponowanego rozwiązania, umożliwi częściowe rozcieńczenie metanu w każdym z badanych wariantów, umożliwiając na przykład ucieczkę załogi z wyrobiska zagrożonego wybuchem.
    Źródło:
    Management Systems in Production Engineering; 2016, 3 (23); 156-162
    2299-0461
    Pojawia się w:
    Management Systems in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rocking Curve Imaging Studies of Laterally Overgrown GaAs and GaSb Epitaxial Layers
    Autorzy:
    Wierzbicka, A.
    Lübbert, D.
    Domagała, J.
    Zytkiewicz, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/1791425.pdf
    Data publikacji:
    2009-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.05.cp
    68.55.ag
    81.15.Lm
    Opis:
    X-ray rocking curve imaging technique was used to study crystallographic perfection of laterally overgrown epitaxial structures. We focus on rocking curve imaging studies of Si-doped GaAs and GaSb laterally overgrown layers grown by liquid phase epitaxy on $SiO_{2}$ masked GaAs and GaSb/GaAs substrates, respectively. High spatial resolution offered by rocking curve imaging technique allows studying the effect of laterally overgrown epitaxial wing tilt towards the mask. Distribution of tilt magnitude over the area of laterally overgrown epitaxial stripes is easily determined. In heteroepitaxial GaSb/GaAs laterally overgrown epitaxial structures local mosaicity in the wing area was detected. Since individual grains are clearly visible on rocking curve imaging maps, their size and relative misorientation can be determined.
    Źródło:
    Acta Physica Polonica A; 2009, 116, 5; 976-978
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetic resonance imaging assisted with fine needle aspiration biopsy in the diagnosis of fibrosarcomas of the skull in dogs
    Autorzy:
    Zhalniarovich, Y.
    Adamiak, Z.
    Przyborowska, P.
    Otrocka-Domagala, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/31560.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    Five canine patients were directed to low-field magnetic resonance imaging due to different neurological defects. In each case there were heterogeneous extraaxial masses covering left or right dorsal parietal and occipital lobes that were isointense to the brain on T1-weighted Spin Echo images, isointense to hypointense to the brain on T2-weighted Fast Spin Echo sequences and hypointense to the brain on Flair sequence. After MRI study fine needle aspiration biopsy of the tumors was performed. On the basis of the cytological examination fibrosarcomas with of moderate malignancy were diagnosed.
    Źródło:
    Polish Journal of Veterinary Sciences; 2013, 16, 3
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of the Combined Heat Treatment and Severe Plastc Deformation on the Microstructure of Cunisi Alloy
    Autorzy:
    Głuchowski, W.
    Rdzawski, Z.
    Sobota, J.
    Domagała-Dubiel, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/351854.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    copper alloy
    precipitation hardening
    microstructure
    mechanical properties
    electrical properties
    Opis:
    The aim of this work was to study the microstructure and functional properties of CuNi2Si1 alloy. The material was prepared classically by melting, casting, hot rolling and cold rolling. The obtained strips were processed with combined operations of supersaturation, ageing and one of the intensive deformation method - repetitive corrugation and straightening. The efficiency of RCS operation in shaping of functional properties in precipitation hardened copper alloys depends not only on tool geometry and operating parameters but also on whether and at what stage of strip production the supersaturation operation was applied. Application of the supersaturation before RCS operation broadens the potential to shape the set of functional properties. Comparable functional properties of the precipitation hardened copper alloy strips can be reached without application of the supersaturation operation in their manufacturing processes. The process of RCS applied after annealing, and the potentially slightly lower mechanical properties would be compensated by higher electrical conductivity.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 2B; 1207-1214
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microstructure and Properties of Multifibre Composites
    Autorzy:
    Głuchowski, W.
    Rdzawski, Z.
    Domagała-Dubiel, J.
    Sobota, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/356505.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    fibrous composite
    copper matrix
    microstructure
    mechanical properties
    electrical properties
    Opis:
    In the study microstructure and properties of composite multifibre copper-base wires are presented. A decision was made to produce wires with “soft” fibres (Al) and “hard” fibres (Fe). In the study the phenomenon occurring on the border of Al-Cu was also analysed. The produced Cu-Al and Cu-Fe composites presented ordered microstructure with the fibres uniformly distributed in the copper matrix. The composites underwent plastic consolidation to the degree which provided satisfactory mechanical and electrical properties. During the drawing the fibres deformed proportionally with copper matrix therefore their content in the cross section remained unchanged.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 2B; 911-916
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    X-Ray and Electron-Optical Characterization of ZnSe(Co) Crystal with Natural Face
    Autorzy:
    Auleytner, J.
    Domagała, J.
    Gołacki, Z.
    Pawłowska, M.
    Pełka, J.
    Regiński, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1929340.pdf
    Data publikacji:
    1993-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.10.-i
    61.14.Hg
    61.16.Bg
    Opis:
    Using complementary X-ray and electron-optical methods, a ZnSe(Co) crystal with natural face was investigated. X-ray diffraction methods such as double-crystal X-ray reflection topography, double-crystal diffractometry for rocking curve measurements, precise lattice constant measurements by the Bond technique were used for crystal structure characterization and X-ray fluorescence method for studies of chemical composition along the crystal. The scanning electron microscopic image of the crystal surface and reflection diffraction of the high-energy electrons enriched the crystal structure characterization. It was shown that X-ray characterization and reflection high-energy electron diffraction can be regarded as very important complementary tools for non-destructive investigation of the ZnSe(Co) crystal surface layers.
    Źródło:
    Acta Physica Polonica A; 1993, 83, 6; 759-768
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Anisotropic Lattice Misfit Relaxation in AlGaAs Semi-Bulk Layers Grown on GaAs Substrates by Liquid Phase Electroepitaxy
    Autorzy:
    Żytkiewicz, Z. R.
    Domagała, J.
    Bąk-Misiuk, J.
    Dobosz, D.
    Leszczyński, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1968459.pdf
    Data publikacji:
    1997-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    68.60.Bs
    68.55.Ln
    Opis:
    Experimental evidence for unidirectional microcracking in semi-bulk AlGaAs layers grown on (001) GaAs substrates is presented. The asymmetrical microcracking leads to anisotropic lattice misfit relaxation in the AlGaAs/GaAs structure and is explained in terms of higher mobility of [-110]-oriented α-type dislocations than that of β-type dislocations oriented in [110] direction.
    Źródło:
    Acta Physica Polonica A; 1997, 92, 5; 1092-1096
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of experimental Yersinia enterocolitica infection on the pregnancy course in sows - preliminary stduies. III. Histopathological lesions
    Autorzy:
    Platt-Samoraj, A
    Szweda, W.
    Procajlo, Z.
    Wisniewska, M.
    Otrocka-Domagala, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/31064.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    sow
    internal organ
    animal disease
    infection
    piglet
    pregnancy phase
    Yersinia enterocolitica
    histopathology
    pregnant sow
    pig
    yersiniosis
    Opis:
    The aim of the study was to evaluate the anatomo- and histopathological lesions in internal organs of sows and their stillborn piglets after experimental Y. enterocolitica infection in different phases of pregnancy. Twelve pregnant sows were divided into 4 groups, infected per os on 33 (n=3), 54 (n=3) and 89 (n=3) day of pregnancy with the pathogenic Y. enterocolitica strain isolated from the aborted swine fetus, and uninfected control group. Histopathological examinations of internal organs and intestine samples of stillborn piglets, slaughtered sows and samples of placentas were performed. Anatomo- and histopathological lesions were the most intense in the group of sows infected in the final phase of pregnancy, where the highest number of stillborn piglets was also found. Lesions of internal organs in stillborn piglets suggested a severe generalized bacterial infection. Although the analysis of experimental Y. enterocolitica infection of pregnant sows revealed that the most intense clinical, anatomopathological and histopathological abnormalities were recorded in the group of animals infected in the final phase of pregnancy. Infection in the first phase of pregnancy could have had an influence on the formation of the granulomatous inflammation. Differences in anatomopathological lesions between infected and control animals suggest that the period of pregnancy in which the infection appears could have had an influence on the course of yersiniosis in pigs.
    Źródło:
    Polish Journal of Veterinary Sciences; 2010, 13, 1; 129-135
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Safety of the long-term application of QuikClot Combat Gauze, ChitoGauze PRO and Celox Gauze in a femoral artery injury model in swine - a preliminary study
    Autorzy:
    Otrocka-Domagala, I.
    Jastrzebski, P.
    Adamiak, Z.
    Pazdzier-Czapula, K.
    Gesek, M.
    Mikiewicz, M.
    Rotkiewicz, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/30627.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    The purpose of this study was to examine the safety of the long-term application of QuikClot Combat Gauze, ChitoGauze PRO and Celox Gauze using a swine model. The study was conducted on nine pigs weighing approximately 30 kg, which were randomly divided into three groups. Under deep anesthesia, the pigs underwent complete transverse cutting of the femoral artery in the groin region. Hemostatic dressings were left in the wound for 24 hours. The animals were euthanized 24 hours after dressing application. In each group, macroscopic and microscopic severe changes and shock symptoms were observed in the lungs, liver, kidneys and heart. Fibrino-gaseous embolic material was found in the pulmonary artery of each group and in the lung vessels of the animals from the ChitoGauze PRO and Celox Gauze groups. In conclusion, the long-term application of the evaluated hemostatic dressings has the risk of coagulopathy and reaching the progressive stage of shock. The residues from the hemostatic dressings can ingress into the systemic circulation, thereby increasing the risk of embolus formation. Because of these harmful effects, the evaluated hemostatic dressings are not appropriate for long-term use. Future studies are needed on the consequences of the long-term application of these hemostatic agents.
    Źródło:
    Polish Journal of Veterinary Sciences; 2016, 19, 2
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    PVT-Grown Single Crystals of Cd$\text{}_{1-x}$Zn$\text{}_{x}$Te (x ≤ 0.25) and ZnTe as Substrates for Epitaxy
    Autorzy:
    Mycielski, A.
    Szadkowski, A.
    Łusakowska, E.
    Kowalczyk, L.
    Domagała, J.
    Bąk-Misiuk, J.
    Wilamowski, Z.
    Witkowska, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1991957.pdf
    Data publikacji:
    1998-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.05.Dz
    81.10.Bk
    Opis:
    The process of growth of single crystals of Cd$\text{}_{1-x}$Zn$\text{}_{x}$Te (x ≤ 0.25) and ZnTe by physical vapour transport has been optimized and the twin-free single crystals with a very good crystal structure and low density of dislocations are grown as substrates for MBE and other techniques of epitaxy. Characterization of the crystals is described.
    Źródło:
    Acta Physica Polonica A; 1998, 94, 3; 441-445
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of 24 hour application of three hemostatic dressing to porcine thigh muscles
    Autorzy:
    Adamiak, Z.
    Jastrzebski, P.
    Pomianowski, A.
    Otrocka-Domagala, I.
    Holak, P.
    Zhalniarovich, Y.
    Przyborowska, P.
    Glodek, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/31595.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    The effectiveness of three types of hemostatic dressings, QuikClot Gauze, ChitoGauze PRO and Celox Gauze, was evaluated in nine pigs. The results indicated a strong influence of all examined dressings on porcine femoral muscle tissue evaluated 24 hours after direct contact. A histopathological analysis revealed pathological changes in muscle tissue specimens collected from all the animals.
    Źródło:
    Polish Journal of Veterinary Sciences; 2014, 17, 3
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Doping on Ga$\text{}_{1-x}$Al$\text{}_{x}$As Structural Properties
    Autorzy:
    Bąk-Misiuk, J.
    Domagała, J.
    Paszkowicz, W.
    Trela, J.
    Żytkiewicz, Z. R.
    Leszczyński, M.
    Regiński, K.
    Muszalski, J.
    Härtwig, J.
    Ohler, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1964092.pdf
    Data publikacji:
    1997-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.05.Ea
    81.40.-z
    68.55.Ln
    61.10.Nz
    Opis:
    The microstructure of Ga$\text{}_{1-x}$Al$\text{}_{x}$As layers was studied using methods of high resolution diffractometry and topography. Mapping out the reciprocal space in the vicinity of 004 reciprocal lattice points shows a difference in diffuse scattering between doped and undoped layers. This result is attributed to a difference in a point-defect density. From the measurements of lattice parameters at different temperature it was found that the thermal expansion coefficients for the doped layers are higher than for the undoped ones. This phenomenon is attributed to the change of the anharmonic part of lattice vibrations by free electrons or/and point defects.
    Źródło:
    Acta Physica Polonica A; 1997, 91, 5; 911-915
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Technology of Ultrathin NbN and NbTiN Films for Superconducting Photodetectors
    Autorzy:
    Guziewicz, M.
    Slysz, W.
    Borysiewicz, M.
    Kruszka, R.
    Sidor, Z.
    Juchniewicz, M.
    Golaszewska, K.
    Domagala, J.
    Rzodkiewicz, W.
    Ratajczak, J.
    Bar, J.
    Wegrzecki, M.
    Sobolewski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1492719.pdf
    Data publikacji:
    2011-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    74.62.Bf
    74.78.-w
    81.15.Cd
    81.15.Jj
    Opis:
    We report fabrication and characterization of ultrathin NbN and NbTiN films designed for superconducting photodetectors. Our NbN and NbTiN films were deposited on $Al_2O_3$ and Si single-crystal wafers by a high-temperature, reactive magnetron sputtering method and, subsequently, annealed at 1000°C. The best, 18 nm thick NbN films deposited on sapphire exhibited the critical temperature of 15.0 K and the critical current density as high as ≈ 8 × $10^6$ A/$cm^2$ at 4.8 K.
    Źródło:
    Acta Physica Polonica A; 2011, 120, 6A; A-076-A-079
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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