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    Wyświetlanie 1-5 z 5
    Tytuł:
    Selected problems of risk evaluation of change in certified civil aviation organisations
    Autorzy:
    Markiewicz, Telesfor Marek
    Markowski, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/2173480.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    safety risk
    risk of change
    aviation safety management system
    ryzyko bezpieczeństwa
    ryzyko zmian
    system zarządzania bezpieczeństwem lotniczym
    Opis:
    This article presents some of the generalised results of this research conducted in the form of a diagnostic survey among Safety Managers and a review of safety risk management procedures, including the rules of change risk evaluation, applied in selected civil aviation organisations subject to the survey. This publication aimed to put them under the discussion of experts interested in the issues. Important problems resulting from the necessity to meet general guidelines standardising processes of risk management, formulated in international law regulations [2], as well as in advisory materials of the International Civil Aviation Organisation [6-8], and others [3, 4], including national ones [11], in confrontation with the need for their practical application, were described. Concerning the general rule of risk evaluation described there, inconsistencies in interpretation of the scale of probability and frequency indices and their influence on the evaluation context were pointed out. A model, considering the time aspect in Event Tree Analysis - ETA procedures based on [5, 9], was proposed. Perceived threats to the results of change risk evaluation caused by applying the "the worst foreseeable situation" principle were described. A different approach in the evaluation of change risk based on a comprehensive assessment of the impact of all identified risks on the defined effect was also proposed. Proposals were made to eliminate the disadvantage resulting from the definition of the probability index value – "extremely improbate".
    Źródło:
    Zeszyty Naukowe. Transport / Politechnika Śląska; 2022, 114; 79--89
    0209-3324
    2450-1549
    Pojawia się w:
    Zeszyty Naukowe. Transport / Politechnika Śląska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    In Memoriam of Professor Stanisław Pabis
    Autorzy:
    Jaros, Małgorzata
    Markowski, Marek
    Myhan, Ryszard
    Powiązania:
    https://bibliotekanauki.pl/articles/298136.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie
    Tematy:
    Pabis Stanisław
    Opis:
    Professor Stanisław Pabis passed away suddenly on September 13, 2019, at the age of 94. We lost an outstanding scientist in the field of Biosystems Engineering who founded the scientific school of methodology of empirical sciences and who made a significant contribution to the development of systems engineering in agriculture and food processing.
    Źródło:
    Technical Sciences / University of Warmia and Mazury in Olsztyn; 2019, 22(4); 291-293
    1505-4675
    2083-4527
    Pojawia się w:
    Technical Sciences / University of Warmia and Mazury in Olsztyn
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of the strength properties of materials intended for tracheobronchial tubes
    Autorzy:
    Sobota, Robert
    Markowski, Jarosław
    Joszko, Kamil
    Gzik-Zroska, Bożena
    Kawlewska, Edyta
    Gzik, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/1844981.pdf
    Data publikacji:
    2020
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
    Tematy:
    thermoplastic elastomer
    tracheobronchial tubes
    oxidative degradation
    hydrolytic degradation
    Opis:
    The desire to increase the comfort of patients and to continue production despite the decreasing amount of available materials on the market has led to the constant search for novel materials that could be used to obtain tracheobronchial tubes. The aim of this study is to determine the mechanical properties of a new thermoplastic elastomer. Two materials - the thermoplastic elastomer and the natural rubber were subjected to three tests: static tensile test, static compression test and static three-point bending test. During the static tensile test, samples of the tested materials were examined, and during the next two examinations, the final products. The materials underwent the processes of sterilization, hydrolytic degradation and degradation by oxidation. The treated samples were also tested in order to compare the obtained results. The mechanical properties of the tested materials improved both after the hydrolytic degradation and oxidative degradation, as well as after the sterilization process. Yet the thermoplastic elastomer revealed a more noticeable increase. The elastomer hardening is a positive phenomenon potentially leading to fewer accidental closures of the tubes cross-section. Both the sterilization process and various degradation methods improved the mechanical properties by strengthening the tested materials. This phenomenon seems to be desirable to avoid the closure of the implemented tube during its application.
    Źródło:
    Engineering of Biomaterials; 2020, 23, 156; 10-16
    1429-7248
    Pojawia się w:
    Engineering of Biomaterials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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