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    Wyświetlanie 1-3 z 3
    Tytuł:
    The Influence of Home Scrap on Mechanical Properties of MgAl9Zn1 Alloy Castings
    Autorzy:
    Konopka, Z.
    Chojnacki, A. C.
    Łągiewka, M.
    Zyska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/382859.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    innovative foundry technologies
    innovative foundry materials
    automation in foundry
    robotics in foundry
    environmental protection
    mechanical properties
    magnesium alloys
    innowacyjne technologie odlewnicze
    innowacyjne materiały odlewnicze
    automatyzacja w odlewni
    robotyka w odlewni
    ochrona środowiska
    właściwości mechaniczne
    stopy magnezu
    Opis:
    The work presents the results of examinations concerning the influence of various amounts of home scrap additions on the properties of castings made of MgAl9Zn1 alloy. The fraction of home scrap in the metal charge ranged from 0 to 100%. Castings were pressure cast by means of the hot-chamber pressure die casting machine under the industrial conditions in one of the domestic foundries. The examinations consisted in the determination of the following properties: tensile strength Rm, yield strength Rp0.2, and the unit elongation A5, all being measured during the static tensile test. Also the hardness measurements were taken by the Brinell method. It was found that the mechanical properties (mainly the strength properties) are being improved up to the home scrap fraction of 50%. Their values were increased by about 30% over this range. Further rise in the home scrap content, however, brought a definite decrease in these properties. The unit elongation A5 exhibited continual decrease with an increase in the home scrap fraction in the metal charge. A large growth of hardness was noticed for the home scrap fraction increasing up to the value of 50%. Further increasing the home scrap percentage, however, did not result in a significant rise of the hardness value any more.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 2; 39-42
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biological characterization of neomysis integer (Leach, 1815) from the Pomeranian Bay in 2006–2007
    Autorzy:
    Grzeszczyk-Kowalska, A.
    Chojnacki, J.C.
    Raczyńska, M.
    Raczyński, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/124649.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    Mysidacea
    Neomysis integer
    Pomeranian Bay
    Baltic Sea
    Opis:
    The aim of the study was to determine the biological characters typical of Neomysis integer, to investigate and update issues of its biology, ecology, and distribution in the southwestern Baltic Sea, and to compare biological properties of N. integer collected during eight study seasons in 2006–2007 in the region from Świnoujście to Darłowo. No link was established between N. integer size and sample collection site. The population attained sizes within the range of 2.64 to 18.84 mm. The size at which females achieved sexual maturity varied seasonally. A mean of 34 eggs was noted in the marsupium. The mean wet weight of N. integer was 0.011 g. Three generations were confirmed at most of the study sites.
    Źródło:
    Journal of Ecological Engineering; 2014, 15, 2; 40-52
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative morphological analysis of neomysis integer (leach, 1815) in 2006–2007 period
    Autorzy:
    Grzeszczyk-Kowalska, A
    Chojnacki, J C
    Raczyńska, M
    Raczyński, M
    Powiązania:
    https://bibliotekanauki.pl/articles/123737.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    Neomysis integer
    Pomeranian Bay
    Baltic Sea
    morphometry
    Opis:
    This paper presents the results of a detailed comparative description of the morphological characters of N. integer obtained during eight research seasons in 2006–2007 period from the region stretching from Świnoujście to Darłowo. An attempt was made to assess the suitability of the studied characters for establishing to which populations individuals belong, to identify secondary sex traits and to detect differences in the body shape of these shrimp-like crustaceans. Most of the measurable characters in all of the samples discrimination analysis indicated the characters which differentiated the compared groups were telson length, lower abdomen width, exopodite uropod length, cephalothorax width below the carapace, cephalothorax width above the carapace and the height of fourth and fifth abdominal segment connections.
    Źródło:
    Journal of Ecological Engineering; 2013, 14, 3; 31-43
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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