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    Wyświetlanie 1-5 z 5
    Tytuł:
    Jiří Rajmund Tretera, Záboj Horák: Právní dějiny církví. Synagoga a církve v průběhu dějin. Praha: Leges, 2019, 288 pp.
    Legal History of Churches, Synagogue and Churches yesterday and today
    Autorzy:
    Přibyl, Stanislav
    Novák, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/2015899.pdf
    Data publikacji:
    2021-12-31
    Wydawca:
    Wydawnictwo Uniwersytetu Śląskiego
    Tematy:
    ecumeny
    law
    Opis:
    Jiří Rajmund Tretera, Záboj Horák: Právní dějiny církví. Synagoga a církvev průběhu dějin [Legal History of Churches, Synagogue and Churches yesterday and today]. Praha: Leges, 2019, 288 pp.
    Źródło:
    Ecumeny and Law; 2021, 9, 2; 155-158
    2353-4877
    2391-4327
    Pojawia się w:
    Ecumeny and Law
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Structure and Properties of Fe-Ni-Al-Si Alloys Produced by Powder Metallurgy
    Autorzy:
    Novák, P.
    Mejzlíková, L.
    Hošek, V.
    Martínek, M.
    Marek, I.
    Michalcová, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1418514.pdf
    Data publikacji:
    2012-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.66.Dk
    62.20.Qp
    Opis:
    Reactive sintering powder metallurgy is a simple alternative to conventional melting and powder metallurgy processes. During this process, pressed powder mixture of pure metals or other precursors is transformed into bulk intermediary phases by thermally activated in situ reaction. This process was previously tested on Fe-Al and Fe-Al-Si alloys. Positive effect of silicon on the reactive sintering behaviour was determined, leading to the development of novel carbon-free high-silicon FeAl20Si20 alloy (given in wt%). In this work, the effect of nickel on the pressureless reactive sintering of Fe-Al-Si pressed powder mixtures was studied. To explain the nickel influence, differential thermal analysis was utilized. Microstructure, phase composition and porosity of the FeAl20Si20Nix (x = 0, 5, 10, 20 wt%) alloys was described. Hardness, wear resistance, high-temperature oxidation resistance and thermal stability were evaluated as functions of nickel content. Results showed that porosity decreases with growing nickel content down to less than 3 vol.%. Oxidation rate of these alloys is more than 10 times lower than that of original FeAl20Si20 alloy. Thermal stability and abrasive wear resistance of these alloys is also superior to Fe-Al and Fe-Al-Si materials.
    Źródło:
    Acta Physica Polonica A; 2012, 122, 3; 524-527
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Powder Metallurgy Preparation of Co-Based Alloys for Biomedical Applications
    Autorzy:
    Marek, I.
    Novák, P.
    Mlynár, J.
    Vojtěch, D.
    Kubatík, T.
    Málek, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1402090.pdf
    Data publikacji:
    2015-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    62.20.Qp
    62.20.F-
    64.70.kd
    Opis:
    Co-based alloys represent very important group of materials used for medical applications. Currently, fabrication of these materials is preferentially done by casting or forming. Production by powder metallurgy techniques is less common. However, powder metallurgy fabrication of these alloys brings advantages such as reduced machining, possibility of alloying by high-melting elements, preparation of nanocrystalline materials with enhanced mechanical properties or producing of porous alloys with improved ability to integrate into issues. In this work, our attention was focused on fundamental preparation of an CoCrMo alloy by two methods of powder metallurgy. In the first method, pure metallic powders were mixed, pressed and sintered in vacuum furnace. The second applied technology consisted of mechanical alloying using planetary ball mill and compaction by spark plasma sintering technique. A series of samples was prepared under various conditions by these procedures. Dependence of microstructure, phase composition and mechanical properties of prepared samples on fabrication conditions (milling parameters, sintering temperature etc.) was studied. Obtained results were compared with properties of commercial cast cobalt alloy used for medical applications.
    Źródło:
    Acta Physica Polonica A; 2015, 128, 4; 597-601
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Verification of electronic device technology for measurement and evaluation of thermal exposure of fire fighters and members of rescue teams
    Autorzy:
    Bernatíková, Šárka
    Tomášková, Hana
    Bužga, Marek
    Jirák, Zdeněk
    Novák, Petr
    Babjak, Ján
    Kot, Tomáš
    Krys, Václav
    Jánošík, Ladislav
    Powiązania:
    https://bibliotekanauki.pl/articles/2162587.pdf
    Data publikacji:
    2017-12-05
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    heart rate
    correlation
    body temperature
    fire fighter
    physical strain
    thermal load
    Opis:
    Background The work of members of rescue teams could be associated with very high physical and thermal loads. If not timely interrupted, any extreme labour-thermal load may lead to a failure of the body and fatal collapse. This risk may be significantly reduced by devices that monitor the response of the body during the intervention and inform rescuers about the need to interrupt the exposure when the critical value of the reference indicator is achieved. The aim of the study was to test the correlation between the data of the newly developed device for signaling the strain of rescuers and the indicators of physiological response of the body. Material and Methods The tests were performed on 2 physically fit fire fighters dressed in a protective rescue suit and using insulating breathing apparatus, over a wide range of heat load under a model load on a bicycle ergometer in a climatic chamber. Results The study provided a significant correlation between the body temperature measured in the ear canal and the temperature under the suit sensed by the tested device – the Safety Ambient Monitor (SAM) (R = 0.9007). The temperature under the suit also correlated with the temperature of the chest skin (R = 0.8928) and heart rate (R = 0.8613). Conclusions A statistically significant correlation was proven between the temperature sensed by the SAM and the body temperature. The technical solution of sensing the temperature under the suit using the verified SAM technology does not affect or limit fire fighters in their work and minimizes the possibility of damage to the sensor and signaling failures. Med Pr 2018;69(1):1–11
    Źródło:
    Medycyna Pracy; 2018, 69, 1; 1-11
    0465-5893
    2353-1339
    Pojawia się w:
    Medycyna Pracy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Heating Rate on the Formation of Intermetallics during SHS Process
    Autorzy:
    Novák, P.
    Michalcová, A.
    Školáková, A.
    Průša, F.
    Kříž, J.
    Marek, I.
    Kubatík, T.
    Karlík, M.
    Haušild, P.
    Kopeček, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1402079.pdf
    Data publikacji:
    2015-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.66.Dk
    65.40.-b
    61.05.cp
    Opis:
    Self-propagating high-temperature synthesis is a simple and efficient method for the synthesis of various compounds including ceramics and intermetallics. In this process, the compressed mixture of elemental or master alloy powders is ignited or heated to initiate the exothermic reactions leading to the formation of desired compounds. In order to control the process efficiently, the effect of several important parameters has to be determined in each applied alloy system. Previous results showed that those parameters are: initiation temperature, process duration, pressure used for compression and heating rate. This paper is devoted to the description and explanation of the effect of the heating rate on the formation of intermetallics during self-propagating high-temperature synthesis in Fe-Al and Ni-Ti systems. Differential thermal analysis of compressed powder mixtures under various heating conditions and microstructure observation of samples prepared by various heating rates using electric resistance heating and spark plasma sintering were carried out. The effect of heating rates on the formations of intermetallics in studied systems is discussed in this paper.
    Źródło:
    Acta Physica Polonica A; 2015, 128, 4; 561-563
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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