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    Wyświetlanie 1-4 z 4
    Tytuł:
    Functional testing of railway traffic control device
    Autorzy:
    Drózd, Paweł
    Rosiński, Adam
    Konopiński, Lech
    Powiązania:
    https://bibliotekanauki.pl/articles/215152.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Kolejnictwa
    Tematy:
    functional tests
    railway traffic control devices
    tests
    Opis:
    The article presents the problems of functional tests of railway traffic control devices. The purpose and scope of the tests as well as the impact of testing on the SRK devices are presented. The methodology of selecting tests depending on the scope of research is proposed. For this purpose, the SRK devices were analyzed for functional and diagnostic properties.
    Źródło:
    Problemy Kolejnictwa; 2020, 186; 91-96
    0552-2145
    2544-9451
    Pojawia się w:
    Problemy Kolejnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study of the synthesis of GAP-HTPB-GAP Liquid Copolymer
    Autorzy:
    Chmielarek, Michał
    Maksimowski, Paweł
    Cieślak, Katarzyna
    Gołofit, Tomasz
    Drozd, Hanna
    Powiązania:
    https://bibliotekanauki.pl/articles/1062796.pdf
    Data publikacji:
    2020
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    HTPB
    GAP
    copolymerization
    optimization
    liquid energetic binder
    Opis:
    GAP and HTPB are polymers on which the copolymer obtained in our work is based. The following report indicates how to perform the polymerization reactions for these two polymers in order to obtain a copolymer that combines their individual positive physico-chemical properties. It demonstrates how the ratio of substrates and reaction conditions affect the polymer properties. It has been shown that increasing the amount of epichlorohydrin attached to HTPB significantly affects the copolymer viscosity. This has a later effect on polymer processing, as well as on the hydroxyl values being too low. This is important for the subsequent production of polyurethanes. Analysis of the results allows the reaction conditions to be designed so as to generate a polymer with the best properties. The reactions were carried out in two stages. The first stage was the connection of polyepichlorohydrin (PECH) to HTPB, and the second was azidation of the resultant PECH-HTPB-PECH copolymer. The influence of the amount of epichlorohydrin attached to HTPB on the copolymer properties (e.g. viscosity) was demonstrated. Analysis of the second stage, the preparation of the GAP-HTPB-GAP copolymer (by azidation of the PECH-HTPB-PECH copolymer), showed that the nitrogen content in the copolymer has a significant effect on the viscosity and heat of polymer combustion.
    Źródło:
    Central European Journal of Energetic Materials; 2020, 17, 4; 566-583
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of the impact of damage to the injection system on the emission of toxic substances in a spark-ignition internal combustion engine
    Autorzy:
    Dziubiński, Mieczysław
    Siemionek, Ewa
    Drozd, Artur
    Żur, Paweł
    Ścirka, Michał
    Tatarynow, Dawid
    Powiązania:
    https://bibliotekanauki.pl/articles/133801.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    spark-ignition internal combustion engine
    exhaust gas toxicity
    exhaust gas standards
    injection system damage
    exhaust gas analyzer
    silnik spalinowy o zapłonie iskrowym
    toksyczność spalin
    normy emisji spalin
    uszkodzenie układu wtryskowego
    analizator spalin
    Opis:
    The article presented analyses the impact of damage to the injection system on the emission of toxic subsumes in a spark-ignition internal combustion engine. The work focuses on the basic elements of the injection system, which include injectors, throttle position sensor, coolant temperature sensor and lambda sensor. In addition, a catalytic reactor has been included in the context of its direct cooperation with the injection system under set conditions. The toxicity of exhaust gases of different spark-ignition engines fueled with petrol or gas in determined operating conditions using the MAHA MGT5 exhaust gas analyser was tested. The content of toxic substances in the exhaust gases was recorded for the correct settings of the injection system and for the engine working with damage to this system. The tests carried out will allow to assess the impact of the damage of the injection system on the toxicity of exhaust gases.
    Źródło:
    Combustion Engines; 2019, 58, 4; 112-118
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Somatics and Physical Fitness of Selected Military Classes
    Autorzy:
    Rzepko, Marian
    Kozubal, Adam
    Ostrowski, Paweł
    Trębacz, Zbigniew
    Tłuczek, Waldemar
    Chlastawa, Łukasz
    Drozd, Sławomir
    Powiązania:
    https://bibliotekanauki.pl/articles/47529190.pdf
    Data publikacji:
    2024
    Wydawca:
    Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
    Tematy:
    military classes
    body composition
    physical fitness
    Beep test
    Opis:
    The idea of opening military classes refers to the tradition of national defense education, training the young generation to defend the homeland and strengthening the country's ties with the army. The creation of military classes became a precedent for the Ministry of National Defense and the Ministry of National Education to build a common defense education system for high school students. The task of military classes in Polish high schools is to prepare young people for future service in various services, such as police, fire brigades and other special services. The aim of this work is to capture the relationship between body composition components and physical fitness of selected uniformed groups. The body composition components were analyzed with the help of the Tanita Body Composition Analyzer DC-240MA. The study used tests from the Polish Army physical fitness test, the Beep test and barbell bench press while lying on a straight bench. One of the conclusions obtained was that the correlation between body composition and fitness tests showed that higher levels of body fat, lean body mass, BMI and body weight negatively affect the results obtained in pull-ups, trunk bends, shuttle runs and Beep tests.
    Źródło:
    Central European Journal of Sport Sciences and Medicine; 2024, 46; 17-33
    2300-9705
    2353-2807
    Pojawia się w:
    Central European Journal of Sport Sciences and Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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