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    Wyświetlanie 1-7 z 7
    Tytuł:
    Analysis of the Possibilities of Using VI Corridor of Transport for the Alternative Export of Bulk Cargo from Upper Silesia (Poland) to the Mediterranean Countries
    Autorzy:
    Markusik, Sylwester
    Gąska, Damian
    Mateusiak, Przemysław
    Powiązania:
    https://bibliotekanauki.pl/articles/504026.pdf
    Data publikacji:
    2015
    Wydawca:
    Międzynarodowa Wyższa Szkoła Logistyki i Transportu
    Tematy:
    intermodal
    transportation corridors
    bulk materials
    transportation costs
    Opis:
    The article assesses the possibility of activation of transport and logistics services in relation Silesia – Trieste - Alexandria and by continuation towards India. The increasing demand for transport on this route, where the section will be located onshore in the sixth (and part of fifth) transport corridor and the forecast of traffic on the route for transportation of bulk materials, justify launching intermodal connections there. It is expected that the market for transport in the analyzed route will have significant bulk loads (coal, coke) in the area of Silesia, in the direction to the south of Europe and further by maritime transport to customers in Egypt and India (coke plants, steel mills).
    Źródło:
    Logistics and Transport; 2015, 27, 3; 33-40
    1734-2015
    Pojawia się w:
    Logistics and Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical simulations of the exploitation parameters of the rotary feeder
    Autorzy:
    Karwat, Bolesław
    Rubacha, Piotr
    Stańczyk, Emil
    Powiązania:
    https://bibliotekanauki.pl/articles/27315596.pdf
    Data publikacji:
    2022
    Wydawca:
    STE GROUP
    Tematy:
    bulk materials
    Discrete Element Method
    exploitation characteristics rotary feeder
    Opis:
    The article presents the problems of determining the mass efficiency of a rotary feeder depending on the selection of design parameters of the device, such as outer diameter, number of blades and rotational speed of the rotor. The hitherto theoretical methods of calculating the feeder efficiency were presented, as well as a new method of determining the device operation parameters was proposed. For this purpose, the numerical Discrete Element Method was used, which allowed simulating the transport of limestone powder in a cell feeder with various design variants. The results of the tests showed that the above design parameters affect the instantaneous efficiency of the feeder and thus impact the distribution of the dosed material during the operation of the device. Depending on the design solution, the simulation results gave information on the fill factor of the feeders. The study showed a significant potential of DEM simulation in the design of circular feeders intended for dosing bulk materials.
    Źródło:
    Management Systems in Production Engineering; 2022, 4 (30); Bibliogr. 33 poz., rys., tab.
    2299-0461
    Pojawia się w:
    Management Systems in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modelling of the flow of streams of cohesionless and cohesive bulk materials in a conveyor discharge point with a flat conveyor belt
    Autorzy:
    Cyganiuk, J. A.
    Kuryło, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/265904.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    materiały sypkie
    przyczepność
    modelowanie przepływu
    pouring point
    discharge point
    bulk materials
    adhesion
    modelling of the flow
    material velocity
    Opis:
    The paper presents the analysis of flow conditions of cohesive and cohesionless bulk materials in a conveyor discharge point of a flat conveyor belt. The analysis was carried out for stationary flows at high velocities. It presents mathematical methods for the description of the velocity of a material leaving a throwing point of a flat conveyor belt as well as final equations which enable the determination of velocity of the material after it has left the throwing point (with the accuracy sufficient for practical use). Next, the velocity calculated for the proposed mathematical description (for selected material groups) has been compared with the velocity obtained from mathematical relations commonly used by engineers. The proposed equations for determining the velocity of the material beyond the point have proved useful, since they enable excluding the indirect equations. Finally, the difference between the values of the velocity obtained with the proposed and indirect equations have been determined and the relative error for the proposed method has been calculated.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2018, 23, 1; 23-35
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Metal Fe-Based Amorphous and Amorphous : Nanocrystalline Materials for Armours Construction
    Autorzy:
    Żak, A.
    Burian, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/403626.pdf
    Data publikacji:
    2012
    Wydawca:
    Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
    Tematy:
    materials engineering
    Fe-based bulk amorphous alloys
    nanocrystalline structure
    mould suction casting
    Opis:
    In the present paper, the physical and technical principles of process for production of bulk amorphous alloys are shown. Technical assumptions for construction of experimental unit for melting and casting of new alloys are described. On the basis of the constructional assumptions the laboratory unit for melting and casting of amorphous alloys was made at Product Technology and Application Group in Institute for Ferrous Metallurgy. Fe-based bulk metallic glasses are modern materials of strength properties substantially higher than could be obtained in currently produced steels. Owing to unique combination of high strength, hardness, elasticity, wear and corrosion resistance as well as specific magnetic properties they demonstrate a great potential for application. The paper contains the results of the investigations aimed at development of technology of making parts from Fe-based bulk amorphous alloys which would be deployed in layered passive armours.
    Źródło:
    Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa; 2012, 3, 4 (10); 23-38
    2081-5891
    Pojawia się w:
    Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sea transportation of some agriculture products liable to self-heating
    Autorzy:
    Popek, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/117371.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    safety of sea transportation
    sea transportation
    agriculture products
    self-heating
    Palm Kernel Shells (PKS)
    IMSBC Code
    MHB Cargo
    Materials Hazardous only in Bulk (MHB)
    Opis:
    Propensity of cargoes to self-heating is determined by many factors which can be divided into two main types - properties of the cargo and environment/storage conditions. Some agricultural products are susceptible to self-heating which can cause many serious problems during handling, storage and sea transportation of such commodities. Palm kernel shells (PKS) have been shipped in bulk since 2007 but they are not a currently listed cargo in the IMSBC. PKS are a natural by-product of palm oil processing and differ materially from the palm kernel expellers currently regulated by the IMSBC Code. However, their specific characteristics and negative external influences may cause them to behave like a substance from Class 4.2 (Substances liable to spontaneous combustion) or MHB cargo. Due to the importance of spontaneous combustion, particularly with respect to the storage and sea transportation of PKS, an investigation has been conducted.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2017, 11, 1; 159-163
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Amorphous materials in the production of new implants
    Autorzy:
    Kiljan, A.
    Liptakova, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/111625.pdf
    Data publikacji:
    2018
    Wydawca:
    Stowarzyszenie Menedżerów Jakości i Produkcji
    Tematy:
    amorphous materials
    magnesium
    bulk metallic glasses
    implants
    corrosion tests
    materiały amorficzne
    magnez
    implant
    testy korozyjne
    szkła metalowe
    Opis:
    Amorphous materials based on magnesium are new materials for potential biomedical application, especially for new implants, as they bear resemblance to titanium implants. Mg66Zn30Ca4 alloy has specific properties, especially mechanical and corrosive, therefore, it has biomedical application as its properties are better than that of other materials. The following paper describes amorphous alloy based on magnesium, properties and shows how to produce amorphous samples of Mg66Zn30Ca4.
    Źródło:
    Production Engineering Archives; 2018, 18; 50-53
    2353-5156
    2353-7779
    Pojawia się w:
    Production Engineering Archives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The use of DSC curves and the Kronmüller theory to study the level of structural defects of Fe-based bulk amorphous alloys
    Autorzy:
    Jeż, Bartłomiej
    Nabiałek, Marcin
    Powiązania:
    https://bibliotekanauki.pl/articles/2204536.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    bulk amorphous alloys
    soft magnetic materials
    free volume
    structural defects
    injection casting
    miękkie materiały magnetyczne
    wady konstrukcyjne
    odlewanie wtryskowe
    masywne stopy amorficzne
    wolna objętość
    Opis:
    This article presents the results of tests carried out on rapid quenched Fe-based alloys. The alloys were made using an injection-casting method. The actual structure of the alloys was also studied using an indirect method, based on H. Kronmüller's theorem. Based on analysis of the primary magnetization curves, in accordance with the aforementioned theory, it was found that Mo causes a change in internal regions associated with changes in the direction of the magnetization vector. The evolution of the thermal properties with increasing volume of Mo has been confirmed by the DSC curves. Addition of Mo, at the expense of the Nb component, results in changes to the crystallization process (i.e. the crystallization onset temperature and number of stages). The study showed that the addition of Mo at the expense of Nb reduces glass forming ability. Based on the DSC analysis, free volumes were determined for the alloys tested. These values were compared with the analysis of primary magnetization curves. It was found that the DSC curves can be used to indirectly describe the structure of amorphous alloys similar to the theory of the approach to ferromagnetic saturation. This approach is new and can be used by many researchers in this field.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2023, 71, 2; art. no. e144613
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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