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    Wyświetlanie 1-3 z 3
    Tytuł:
    Effect of soybean seed cake fractions for safety in maritime transport
    Autorzy:
    Drzewieniecka, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/360787.pdf
    Data publikacji:
    2013
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    kinetic (natural) angle of repose
    static angle of repose
    soybean seed cake
    dangerous goods
    cohesionless bulk cargo
    fractions
    porosity
    bulk density (BD)
    Opis:
    Loose cohesionless bulk cargoes in its composition contain fractions of different size of particles. Some of them are included into the dustiness fractions. One of these solid bulk cargoes is soybean seed cake. It contains in its composition fractions of different sizes. Constantly increasing demand for the bulk cargoes, has increased the interest in the issue of maritime security. Soybean seed cake is transported by various means of transport, including maritime transport. As it is characterized by loose cargo tends to pour athwart on board, which may lead to displacement of the center of ship’s gravity and in consequences may have led to the capsizing of the vessel. In this article influence of small fractions of soybean seed cake one size of the static angle of repose, kinetic (natural) angle of repose, bulk density and porosity in terms of safety of the transport of soybean cake by the sea is presented. The results were shown in the graphs and were statistically elaborated.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2013, 34 (106); 35-39
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of external factors on hazards in the transport processes of soybean meal
    Autorzy:
    Drzewieniecka, Beata
    Drzewieniecki, Jan
    Blatnický, Miroslav
    Powiązania:
    https://bibliotekanauki.pl/articles/27315923.pdf
    Data publikacji:
    2018
    Wydawca:
    STE GROUP
    Tematy:
    śruta sojowa
    wilgotność
    gęstość
    kąt usypu
    porowatość
    soybean meal
    humidity
    density
    angle of repose
    porosity
    Opis:
    The influence of external factors on changes in the soybean meal quality features has an important meaning in the emergence of hazards during the transport processes of this cargo. Soybean meal is one of the most frequently used components of fodder mixtures. Due to its inherent properties, it is classified as special cargoes. Maintaining the quality of soybean meal during transport processes depends on storage, handling and transport conditions. The main external factor included in the study was humidity. Transport-technological quality features were distinguished: kinetic angle of repose, size of particles, bulk density, porosity. The article presents the results of research on soybean meal and its separated fractions. There was presented humidity influence on changes in significant features for this cargo. Type and range of changes in the distinguishing features of soybean meal were determined in the given stages of the transport chain under the influence of humidity. The risk was assessed in the transport processes of soybean meal. A correlation was determined between changes of individual features and water content in soybean meal changing as a result of air humidity. It was found that humidity of the ambient air in which transport processes occur and size of grain particles of soybean meal have a significant impact on changes in transport-technological quality features.
    Źródło:
    New Trends in Production Engineering; 2018, 1, 1; 301--307
    2545-2843
    Pojawia się w:
    New Trends in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Handling and transportation properties of rapeseed biomass as affected by particle size
    Autorzy:
    Bojanowska, Milena
    Powiązania:
    https://bibliotekanauki.pl/articles/29521042.pdf
    Data publikacji:
    2023
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    rapeseed meal
    rapeseed cake
    canola
    biomass
    agricultural commodities
    bulk storage
    flowability
    logistics vulnerability
    particle size
    angle of repose
    porosity
    bulk density
    agricultural bulk solids
    Opis:
    Rapeseed by-products of seeds de-oiling, particularly expellers and post-extracted meal, are currently considered an important biomass that can be used as an alternative energy source, either in raw form or after conversion to biochar. Rapeseed biomass represents a difficult-to-handle cargo, mainly due to its sensitivity to mechanical, climatic, and biological impacts, as well as its dusty nature. This study aims to determine the physical properties of rapeseed meals and their fractions. Morphological and chemical features of six particle sets are investigated in order to explain the variation in their physical properties having importance in handling and transportation processes. The true density of fractions increases when the particle size decreases due to the diminishing quantitative share of seed coats. No correlation is observed between true and bulk densities, as the particle shape, surface sculpture, and adhesion affect the mutual particle arrangements. Along with a decrease in the particle size from 0.4 mm, a rapid decrease in the flowability is observed. The tendency of the finest dust (d < 0.075 mm) to form agglomerated complexes causes its lower bulk density, higher porosity, and higher angles of repose in comparison to coarse dust (0.075–0.4 mm). It is concluded that a relatively low tendency to free flowing of natural RSM is mainly caused by its wide-ranging particle size distribution and their geometry differentiation, which facilitate mutual particle interlockings. The known cases of blockages of silos, bins, hoppers, and transfer chutes may be mainly caused by the powder fractions (< 0.2 mm), with a much lower flowability than other particles.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2023, 74 (146); 5-15
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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