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Wyszukujesz frazę "Nazarenko, O. V." wg kryterium: Autor

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    Wyświetlanie 1-2 z 2
    Tytuł:
    Aesthetics-based classification of geological structures in outcrops for geotourism purposes: a tentative proposal
    Autorzy:
    Mikhailenko, A. V.
    Nazarenko, O. V.
    Ruban, D. A.
    Zayats, P. P.
    Powiązania:
    https://bibliotekanauki.pl/articles/94482.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    geological heritage
    stratification
    fault
    fold
    epikarst
    Western Caucasus
    Russia
    dziedzictwo geologiczne
    warstwowanie
    uskok
    fałd
    zachodni Kaukaz
    Rosja
    Opis:
    The current growth in geotourism requires an urgent development of classifications of geological features on the basis of criteria that are relevant to tourist perceptions. It appears that structure-related patterns are especially attractive for geotourists. Consideration of the main criteria by which tourists judge beauty and observations made in the geodiversity hotspot of the Western Caucasus allow us to propose a tentative aesthetics-based classification of geological structures in outcrops, with two classes and four subclasses. It is possible to distinguish between regular and quasi-regular patterns (i.e., striped and lined and contorted patterns) and irregular and complex patterns (paysage and sculptured patterns). Typical examples of each case are found both in the study area and on a global scale. The application of the proposed classification permits to emphasise features of interest to a broad range of tourists. Aesthetics-based (i.e., non-geological) classifications are necessary to take into account visions and attitudes of visitors.
    Źródło:
    Geologos; 2017, 23, 1; 45-52
    1426-8981
    2080-6574
    Pojawia się w:
    Geologos
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of the artificial defect on the flexible pipeline twist angle
    Autorzy:
    Nazarenko, S.
    Kovalenko, R.
    Kolienov, O.
    Savelie, D.
    Miachyn, V.
    Demianyshyn, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/24200543.pdf
    Data publikacji:
    2022
    Wydawca:
    Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
    Tematy:
    flexible piping
    test
    pressure hose
    twist angle
    defect
    operating pressure
    elastyczne orurowanie
    wąż ciśnieniowy
    kąt skręcenia
    wada
    ciśnienie robocze
    Opis:
    Purpose: To establish the dependence of the change in the values of the twisting angle of the flexible pipeline on the internal water pressure and the defect length, which is directed along and across the axis of the sleeve. Design/methodology/approach: Experimental studies were conducted in two stages. At the first stage, the methodology and plan of the experiment were developed, the factors and their values were determined, and experimental studies were conducted. The limits of variation in the area of factor spaces were established based on the basic analysis of a priori information. The length of the defect was 0, 50 and 100 mm. The pressure values in the sleeve were 0.2, 0.4 and 0.6 MPa. Adequacy of the obtained regression equations was checked using Fisher's test. At the second stage, the analysis of the research results was carried out and the numerical values of the factors that most affect the change in the value of the twisting angle of the sleeve were established. Findings: According to the results of experimental studies, the dependences of the change in the twisting angle of the flexible pipeline on the internal water pressure and the length of the defect were obtained. It was established that the dependence of the previously mentioned factors is close to linear. The largest discrepancy in the maximum sleeve twist angle – 21% was observed at pressure values of 0.4 MPa. Research limitations/implications: The research was limited to only two factors: the defect length and the pressure in the middle of the sleeve. Such factors as the degree of wear of the sleeve, the type of sleeve and the number of defects on the test sample were not taken into account. Practical implications: The obtained results can be used during the development of a new method of testing flexible pipelines, which will allow to establish hidden defects in them. Originality/value: For the first time, the dependence of the influence of the size and direction of the defect on the reinforcing frame of the pressure fire hose on the value of its twist angle at constant internal pressure indicators was established.
    Źródło:
    Archives of Materials Science and Engineering; 2022, 114, 2; 58--68
    1897-2764
    Pojawia się w:
    Archives of Materials Science and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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