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    Wyświetlanie 1-11 z 11
    Tytuł:
    Thermodynamic Description of Ternary Fe-B-X Systems. Part 4: Fe-B-V
    Autorzy:
    Miettinen, J.
    Visuri, V.-V.
    Fabritius, T.
    Milcheva, N.
    Vassilev, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/355188.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    phase diagrams
    thermodynamic modelling
    Fe-based systems
    Fe-B-X systems thermodynamic database
    Fe-B-V system
    Opis:
    Thermodynamic descriptions of the ternary Fe-B-V system and its binary sub-system B-V, are developed using experimental thermodynamic and phase equilibrium data from the literature. The thermodynamic parameters of the other binaries, Fe-V and Fe-B, are taken from earlier assessments slightly modifying the Fe-V description. The work is in the context of a new Fe-B-X (X = Cr, Ni, Mn, V, Si, Ti, C) database. The solution phases are described using substitutional solution model. The borides are treated as stoichiometric or semistoichiometric phases and described with two-sublattice models.
    Źródło:
    Archives of Metallurgy and Materials; 2019, 64, 2; 451-456
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermodynamic Description of Ternary Fe-B-X Systems. Part 5: Fe-B-Si
    Autorzy:
    Miettinen, J.
    Visuri, V.-V.
    Fabritius, T.
    Milcheva, N.
    Vassilev, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/355656.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    phase diagrams
    thermodynamic modeling
    Fe-based systems
    Fe-B-X systems thermodynamic database
    Fe-B-Si system
    Opis:
    Thermodynamic descriptions of the ternary Fe-B-Si system and its binary sub-system, B-Si, are developed in the context of a new Fe-B-X (X = Cr, Ni, Mn, V, Si, Ti, C) database. The thermodynamic parameters of the other binary sub-systems, Fe-Si and Fe-B, are taken from earlier assessments. Experimental thermodynamic and phase equilibrium data available in the literature has been used for the optimization of the thermodynamic parameters of the Fe-B-Si and B-Si systems. The solution phases are described using substitutional solution model and the compounds (silicides and borides) are treated as stoichiometric phases. The calculated and experimental thermodynamic and phase equilibrium data were found to be in good agreement.
    Źródło:
    Archives of Metallurgy and Materials; 2019, 64, 4; 1239-1248
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermodynamic Description of Ternary Fe-B-X Systems. Part 6: Fe-B-Ti
    Autorzy:
    Miettinen, J.
    Visuri, V.-V.
    Fabritius, T.
    Milcheva, N.
    Vassilev, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/356115.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    phase diagrams
    thermodynamic modeling
    Fe-based systems
    Fe-B-X systems thermodynamic database
    Fe-B-Ti system
    Opis:
    Thermodynamic optimizations of the ternary Fe-B-Ti system and its binary sub-system, B-Ti are presented. The thermodynamic descriptions of the other binaries, Fe-Ti and Fe-B, are taken from the earlier studies slightly modifying the Fe-Ti system assessment. The adjustable parameters of the Fe-B-Ti and B-Ti systems are optimized in this study using the experimental thermodynamic and the phase equilibrium data from the literature. The solution phases of the system are described using the substitutional solution model and the compounds (including borides) are treated as stoichiometric phases. The results show a good correlation between the calculated and measured thermodynamic and phase equilibrium data.
    Źródło:
    Archives of Metallurgy and Materials; 2019, 64, 4; 1249-1255
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermodynamic Description of Ternary Fe-B-X Systems. Part 9: Fe-B-Cu
    Autorzy:
    Miettinen, Jyrki
    Visuri, Ville-Valtteri
    Fabritius, Timo
    Powiązania:
    https://bibliotekanauki.pl/articles/2049545.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    phase diagrams
    thermodynamic modelling
    thermodynamic database
    Fe-based systems
    Fe-B-X systems
    Fe-B-Cu system
    Opis:
    Thermodynamic descriptions of the ternary Fe-B-Cu system and its binary sub-system B-Cu aredeveloped in the context of a new Fe-B-X (X = Cr, Cu, Mn, Mo, Ni, Si, Ti, V, C) database. The thermodynamic parameters of the other binary sub-systems (Fe-B and Fe-Cu) are taken from earlier assessments. Experimental thermodynamic and phase equilibrium data available in the literature have been used for the optimization of the Fe-B-Cu and B-Cu systems’ thermodynamic parameters. The solution phases are described using a substitutional solution model and the compounds (two borides of the Fe-B system) are treated as stoichiometric phases. A good agreement was obtained between the calculated and the experimental thermodynamic and phase equilibrium data.
    Źródło:
    Archives of Metallurgy and Materials; 2021, 66, 1; 297-304
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermodynamic Description of Ternary Fe-B-X Systems. Part 1: Fe-B-Cr
    Opis termodynamiczny trójskładnikowych układów Fe-B-X. Część 1: Fe-B-Cr
    Autorzy:
    Miettinen, J.
    Vassilev, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/353802.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    phase diagrams
    thermodynamic modelling
    Fe-based systems
    Fe-B-X systems thermodynamic database
    Fe-B-Cr system
    diagramy fazowe
    modelowanie termodynamiczne
    układy na bazie Fe
    termodynamiczne układy Fe-B-X
    układ Fe-B-Cr
    Opis:
    A thermodynamic description of the Fe-B-Cr system is developed in the context of a new Fe-B-X (X = Cr, Ni, Mn, Si, Ti, V, C) database. The thermodynamic parameters of the binary sub-systems, Fe-B, Fe-Cr and B-Cr, are taken from earlier assessments slightly modifying the Fe-B and B-Cr descriptions, and those of the ternary system are optimized in this study using experimental thermodynamic and phase equilibrium data from the literature. The solution phases are described using substitutional solution model. The borides are treated as stoichiometric or semi-stoichiometric phases and described with two-sublattice models.
    Przedstawiono termodynamiczny opis trójskładnikowego układu Fe-B-Cr w kontekście bazy danych dla układów Fe-B-X (X = Cr, Ni, Mn, Si, Ti, V, C). Parametry termodynamiczne dwuskładnikowych stopów Fe-Mn, Fe-B i Mn-B zostały są zaczerpnięte z wcześniejszych opracowań, przy tym opisy Fe-B i B-Cr zostały nieznacznie zmodyfikowane. Parametry dla układu Fe-Mn-B zostały zoptymalizowane w tej pracy w oparciu o eksperymentalne równowagi fazowe i dane termodynamiczne zaczerpnięte z literatury. Roztwory stałe opisano przy użyciu modelu roztworu substytucyjnego, a borki traktowane są jako fazy stechiometryczne lub półstechiometryczne opisane przy użyciu modelu dwu podsieci.
    Źródło:
    Archives of Metallurgy and Materials; 2014, 59, 2; 601-607
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermodynamic Description of Ternary Fe-B-X Systems. Part 3: Fe-B-Mn
    Opis termodynamiczny trójskładnikowych układów Fe-B-X. Część 3: Fe-B-Mn
    Autorzy:
    Miettinen, J.
    Lilova, K.
    Vassilev, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/353752.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    phase diagrams
    thermodynamic modelling
    Fe-based systems
    Fe-B-X systems thermodynamic database
    Fe-B-Mn system
    diagramy fazowe
    modelowanie termodynamiczne
    systemy na bazie Fe
    termodynamiczny system Fe-B-X
    system Fe-B-Mn
    Opis:
    A thermodynamic optimization of the ternary Fe-B-Mn system is presented. The thermodynamic parameters of the binary sub-systems, Fe-Mn, Fe-B and B-Mn, are taken from earlier assessments slightly modifying the B-Mn system description. The thermodynamic parameters of the Fe-B-Mn system are optimized in this study using literature experimental thermodynamic and phase equilibrium data. The solution phases of the system are described using the substitutional solution model and the borides are treated as stoichiometric or semi-stoichiometric phases of the (A,B)pCq type described with the two-sublattice models.
    Przedstawiono termodynamiczny opis trójskładnikowego układu Fe-B-Mn. Parametry termodynamiczne dwuskładnikowych stopów Fe-Mn, Fe-B i B-Mn zostały zaczerpnięte z wcześniejszych opracowań, przy tym opis układu B-Mn został nieznacznie zmodyfikowany. Parametry termodynamiczne dla układu Fe-B-Mn zostały zoptymalizowane w tej pracy w oparciu o eksperymentalne równowagi fazowe i dane termodynamiczne zaczerpnięte z literatury. Roztwory stałe w układzie Fe-B-Mn opisano przy użyciu modelu roztworu substytucyjnego, a borki traktowane sa jako fazy stechiometryczne lub półstechiometryczne typu (A,B)pCq opisane przy użyciu modelu dwu podsieci.
    Źródło:
    Archives of Metallurgy and Materials; 2014, 59, 4; 1481-1485
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermodynamic Description Of Ternary Fe-B-X Systems. Part 2: Fe-B-Ni
    Autorzy:
    Miettinen, J.
    Vassilev, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/353480.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    phase diagrams
    thermodynamic modelling
    Fe-based systems
    Fe-B-X systems thermodynamic database
    Fe-B-Ni system
    diagramy fazowe
    modelowanie termodynamiczne
    układy na bazie Fe
    termodynamiczne układy Fe-B-X
    układ Fe-B-Ni
    Opis:
    Opis termodynamiczny trójskładnikowych układów Fe-B-X. Część 2: Fe-B-Ni
    Źródło:
    Archives of Metallurgy and Materials; 2014, 59, 2; 609-614
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermodynamic Description of Ternary Fe-B-X Systems. Part 7: Fe-B-C
    Autorzy:
    Miettinen, J.
    Visuri, V.-V.
    Fabritius, T.
    Vassilev, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/352609.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    phase diagrams
    thermodynamic modelling
    thermodynamic database
    Fe-B-X systems
    Fe-B-C system
    Opis:
    Thermodynamic description of the Fe-B-C system in its iron-rich corner is developed in the context of a new Fe-B-X (X = Cr, Ni, Mn, Si, Ti, V, C) database. The thermodynamic parameters of the binary sub-systems, Fe-B, Fe-C and B-C, are taken from earlier assessments modifying the B-C description. The parameters of the Fe-B-C system are optimized in this study using experimental thermodynamic and phase equilibrium data from the literature. Liquid, beta-rhombo-B and graphite phases are described using the substitutional solution model, while the ferrite (bcc), the austenite (fcc), the cementite (M3C) and the M23C6 phases are described with the sublattice model and the borides, Fe2B, FeB and B4C, are treated as stoichiometric phases. A good correlation was obtained between the calculated and the experimental thermodynamic and phase equilibrium data. The description is recommended to be used at the composition region of wt% C + wt% B < 15 and at temperatures below 2700°C.
    Źródło:
    Archives of Metallurgy and Materials; 2020, 65, 2; 923-933
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermodynamic Description of Ternary Fe-B-X Systems. Part 8: Fe-B-Mo, with Extension to Quaternary Fe-B-Cr-Mo System
    Autorzy:
    Miettinen, Jyrki
    Visuri, Ville-Valtteri
    Fabritius, Timo
    Powiązania:
    https://bibliotekanauki.pl/articles/2049544.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    phase diagrams
    thermodynamic modeling
    thermodynamic database
    Fe-based systems
    Fe-B-X systems
    Fe-B-Mo system
    Fe-B-Cr-Mo system
    Opis:
    Thermodynamic optimizations of the ternary Fe-B-Mo system and its binary sub-system B-Mo are presented. The Fe-B-Mo description is then extended to the quaternary Fe-B-Cr-Mo system by assessing the ternary B-Cr-Mo system. The thermodynamic descriptions of the other binaries (Fe-B, Fe-Cr, Fe-Mo, B-Cr, and Cr-Mo) and the other ternaries (Fe-B-Cr and Fe-Cr-Mo) are taken from earlier studies. In this study, the adjustable parameters of the B-Mo, Fe-B-Mo, and B-Cr-Mo systems were optimized using the experimental thermodynamic and the phase equilibrium data from the literature. The solution phases of the system (liquid, bcc and fcc) are described with the substitutional solution model, and most borides are treated as stoichiometric phases or semistoichiometric phases, using a simple two-sublattice model for the latter. The system’s intermetallic phases, Chi, Mu, R, and Sigma (not dissolving boron) as well as boride M3B2, based on a formulation of (Cr,Fe)(Cr,Fe,Mo)2(B)2, are described with a three-sublattice model. Reasonable agreement is obtained between the calculated and measured phase equilibria in all four systems: B-Mo; Fe-B-Mo; B-Cr-Mo; and Fe-B-Cr-Mo.
    Źródło:
    Archives of Metallurgy and Materials; 2021, 66, 1; 281-295
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study on Effectiveness of Using Column-Oriented Databases in the Processing of Measurement Characteristics of an Electric Vehicle
    Autorzy:
    Czerepicki, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/223980.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    electric vehicle
    measurement characteristics
    IT transport systems
    NoSQL database
    pojazd elektryczny
    charakterystyki pomiarowe
    system transportu IT
    baza danych NoSQL
    Opis:
    Electric vehicles are increasingly popular means of transport. One of the most important problems of their operation is to optimize the use of a battery pack. It requires to analyze the operational characteristics of a vehicle in motion, which are stored in a database. If the measurement data are collected from many vehicles, the efficiency of their analysis is important. The objective of this article is to study the possibilities of using modern column-oriented databases in order to increase the efficiency of the analysis of selected operational characteristics of an electric vehicle. The research problem is a comparative analysis of the processing efficiency of selected measurement characteristics of an electric vehicle in relational and column-oriented data structures. Important analytical functions were formulated and recorded in the form of database queries. An experiment consisting in multiple execution of functions packages on various database structures, including a column-oriented one, was carried out. The execution time of packages and the IT system load were collected and analyzed. The analysis of the experiment results allows to conclude that the use of the column-oriented data structures made it possible to shorten the time of executing the functions analyzing the energy consumption by the electric vehicle’s drive system. Depending on the type of the analyzed characteristics of the vehicle and its method of representation in the database, a significant reduction of the analysis time compared to the relational structure was obtained. Also, a decrease in the load on the computer system during data processing on the column-oriented structures was noted. The use of the column-oriented databases in the processing and analysis of measurement operational characteristics of electric vehicles is justified and it can bring measurable effects. It should be considered that the effectiveness of solving depends on the number of the analyzed characteristics and the format of their representation in the computer.
    Źródło:
    Archives of Transport; 2019, 51, 3; 77-84
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Designing and efficiency of database for simulation of processes in systems. Case study for the simulation of warehouse processes
    Autorzy:
    Jachimowski, R.
    Gołębiowski, P.
    Izdebski, M.
    Pyza, D.
    Szczepański, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/224020.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    SIMMAG3D
    database
    processes simulation in systems
    warehouse processes
    external transport
    internal transport
    baza danych
    procesy magazynowe
    symulacja procesów magazynowych
    transport zewnętrzny
    transport wewnętrzny
    Opis:
    The basis of each IT system is data exchange both between individual modules of program and between program and user. The number of exchanged data and the number of operations on the data, which should be performed, require application of professional tools allowing for collecting and performing operations on multiple types of data. One of these tools are databases, which are an essential part of any IT system. With database designing are connected many decision problems which can occur both during the construction of database management system and at the stage of integration of entire user application with developed database. The article presents typical decision problems connected with designing of databases. These problems mainly concern sphere of information technology (including the programming language or recovery mechanism of database after the failure). Database architecture for typical IT system from the point of view possible paths for users were discussed, and role of catalogues played in development of database were presented. In addition, modular structure of the database, which was developed for the system SIMMAG3D for modelling and visualization of warehouse facilities in 3D was shown. This system is being developed under a project financed by the National Centre for Research and Development. We discussed in detail one of the essential elements in developed database - catalogues of means of external and internal transport, non-mechanical equipment and accessories which are essential from the point of view of the work load.
    Źródło:
    Archives of Transport; 2017, 41, 1; 31-42
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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