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Wyszukujesz frazę "Veličković, S." wg kryterium: Autor

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    Wyświetlanie 1-3 z 3
    Tytuł:
    Precise measurement of chlorine isotopes by thermal ionization mass spectrometry
    Autorzy:
    Neskovic, O.
    Veljkoviç, M.
    Velickoviç, S.
    Deriç, A.
    Miljeviç, N.
    Golobocanin, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/147003.pdf
    Data publikacji:
    2002
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    chlorine isotopes
    mass spectrometry
    thermal ionization
    Opis:
    A procedure for the determination of chlorine isotopic ratios by positive thermal ionization mass spectrometry of the Cs2Cl+ ion has been investigated. The chlorine isotopic composition in CsCl spectroscopically pure has been measured with a precision of 0.034. The chlorine composition in sea water samples has also been determined.
    Źródło:
    Nukleonika; 2002, 47,suppl.1; 85-87
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of load and reinforcement content on selected tribological properties of Al/SiC/Gr hybrid composites
    Autorzy:
    Veličković, S.
    Miladinović, S.
    Stojanović, B.
    Nikolić, R. R.
    Hadzima, B.
    Arsić, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/111714.pdf
    Data publikacji:
    2018
    Wydawca:
    Stowarzyszenie Menedżerów Jakości i Produkcji
    Tematy:
    aluminum alloy
    hybrid composites
    silicon carbide
    graphite
    particles
    stop aluminium
    węglik krzemu
    grafit
    kompozyty hybrydowe
    Opis:
    Hybrid materials with the metal matrix are important engineering materials due to their outstanding mechanical and tribological properties. Here are presented selected tribological properties of the hybrid composites with the matrix made of aluminum alloy and reinforced by the silicon carbide and graphite particles. The tribological characteristics of such materials are superior to characteristics of the matrix – the aluminum alloy, as well as to characteristics of the classical metal-matrix composites with a single reinforcing material. Those characteristics depend on the volume fractions of the reinforcing components, sizes of the reinforcing particles, as well as on the fabrication process of the hybrid composites. The considered tribological characteristics are the friction coefficient and the wear rate as functions of the load levels and the volume fractions of the graphite and the SiC particles. The wear rate increases with increase of the load and the Gr particles content and with reduction of the SiC particles content. The friction coefficient increases with the load, as well as with the SiC particles content increase.
    Źródło:
    Production Engineering Archives; 2018, 18; 18-23
    2353-5156
    2353-7779
    Pojawia się w:
    Production Engineering Archives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of atmospheric conditions on the migration of diesel fuel spilled in soil
    Autorzy:
    Vuruna, M.
    Veličković, Z.
    Perić, S.
    Bogdanov, J.
    Ivanković, N.
    Bučko, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/204748.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    diesel fuel
    spillage
    sand
    clay
    vertical migration
    Opis:
    The most common chemical’s spills in typical transportation accidents are those with petroleum products such as diesel fuel, the consequence of which is an extensive pollution of the soil. In order to plan properly fuel recovery from the soil, it is important to gain information about the soil depth which may be affected by pollutant and to predict the pollutant concentration in different soil layers. This study deals with the impact of basic atmospheric conditions, i.e. air temperature and humidity on the diesel fuel migration through the soil. The diesel fuel was spilled into columns (L = 30 cm; D = 4.6 cm) filled with sandy and clay soil samples, and its concentrations at various depths were measured after 11 days under various air temperature (20 and 40°C) and relative humidity (30–100%) conditions. The effects observed were explained by understanding physical processes, such as fuel evaporation, diffusion and adsorption on soil grains. The increase in temperature results in higher fuel evaporation loss and its faster vertical migration. The relative humidity effect is less pronounced but more complex, and it depends much on the soil type.
    Źródło:
    Archives of Environmental Protection; 2017, 43, 1; 73-79
    2083-4772
    2083-4810
    Pojawia się w:
    Archives of Environmental Protection
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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