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    Tytuł:
    Uwarunkowania produkcji rolniczej w województwie kujawsko-pomorskim w świetle uregulowań prawnych
    Conditions of agricultural production in Kujawsko-Pomorskie Voivodship in the context of legal regulations
    Autorzy:
    Kobierski, M.
    Ignaszak, P.
    Kociniewska, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/101251.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    ochrona gleb
    produkcja rolnicza
    polityka ekologiczna
    soil protection
    agricultural production
    ecological policy
    Opis:
    Artykuł stanowi przegląd obowiązujących ustaw, aktów prawnych, zarządzeń i dokumentów, które regulują kwestie związane z ochroną gleb w Polsce, ponieważ należą one do najbardziej zagrożonych zasobów przyrodniczych, podlegając systematycznej degradacji oraz trwałemu przekształceniu w wyniku wyłączania ich z przyrodniczego użytkowania. Zapewnienie zrównoważonego użytkowania gleb pozwala podnieść poziom ich ochrony. Działaniem priorytetowym jest zahamowanie lub osłabienie niekorzystnych trendów oraz negatywnych zjawisk oddziałujących na środowisko glebowe. Zasoby glebowe użytków rolnych w Polsce systematycznie zmniejszają się i dotyczy to także gruntów w dobrej kulturze rolnej. Zgodnie z polityką ekologiczną prawidłowe użytkowanie zasobów glebowych i leśnych jest jednym z działań na rzecz zapewnienia bezpieczeństwa ekologicznego. Polska znajdując się w strukturach Unii Europejskiej jest zobowiązana do wypracowania strategii, które uwzględniałyby działania dostosowane do aktualnego stanu środowiska glebowego oraz stopnia zagrożenia różnymi formami erozji. W artykule dokonano analizy uwarunkowań produkcji rolniczej w województwie kujawsko-pomorskim na tle kraju. Oceniono ponadto zmiany obszarowe pod wpływem działań mających na celu ochronę zasobów glebowych na podstawie danych statystycznych z ostatniego dziesięciolecia.
    The article introduces acts in force, legal acts, regulations and documents which regulate matters related to the protection of soils in Poland. The soils belong to one of the most endangered natural resources and they are a subject to systematic degradation and permanent transformation as a result of their exclusion from the natural use. Sustainable use of soils increases the level of their protection. The priority is to stop or weaken unfavorable trends and negative impacts on the soil environment. Soil resources of agricultural area in Poland are systematically decreasing and this also applies to lands in a good rural culture. According to an ecological policy, the proper use of soil and forest resources is one of the actions aimed at ensuring ecological security. Poland as a member of European Union is obligated to devise strategies taking into account the current condition of the soil environment and the degree of threat to various forms of erosion. The paper analyzes the determinants of agricultural production in the Kuyavia-Pomerania province against the background of the whole country. According to the statistical data from the last decade, estimated area changes were assessed under the influence of actions aimed at protecting soil resources.
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2018, III/1; 787-799
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Badanie i ocena możliwości wykorzystania na cele energetyczne rozdrobnionych ziaren zbóż wiechlinowatych
    Testing and assessment of the possibility of using shredded poaceae cereal grains for energy purposes
    Autorzy:
    Piasecka, I.
    Knozowski, P.
    Ropińska, P.
    Tomporowski, A.
    Ignaszak, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/8840705.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Źródło:
    Acta Scientiarum Polonorum. Technica Agraria; 2017, 16, 1-2; 47-57
    1644-0684
    Pojawia się w:
    Acta Scientiarum Polonorum. Technica Agraria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Groundwater vulnerability based on four different assessment methods and their quantitative comparison in a typical North European Lowland river catchment (the Pliszka River catchment, western Poland)
    Autorzy:
    Hermanowski, P.
    Ignaszak, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/2060348.pdf
    Data publikacji:
    2017
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    vulnerability mapping
    groundwater protection
    Pliszka River
    Polska
    Opis:
    The assessment of groundwater vulnerability is a crucial part of planning and water management because it can identify areas where aquifers are more susceptible to contamination. Depending on the vulnerability assessment method, the results can differ significantly. Consequently, different methods can provide ambiguous information that could further influence decision-making processes in planning or water management. For the Pliszka River catchment, the intrinsic groundwater vulnerability of the uppermost aquifer was estimated using four different methods: DRASTIC, GOD, and two methods that are based on empirical formulas of water residence time in an unsaturated zone. The input data include a series of thematic maps supplemented by 1,322 shallow borehole profiles and laboratory tests of samples collected in the course of fieldwork. The collected data were processed in GIS software, and the results of each method were mapped in high resolution. The resulting maps of groundwater vulnerability were then quantitatively compared to validate their applicability for the assessment of groundwater vulnerability in a typical North European Lowland river catchment. The maps generated by the DRASTIC and GOD methods are dominated by areas with moderately high (54.6 and 48.4%, respectively) and moderate groundwater vulnerability (32.7 and 32.3%, respectively). No areas of high groundwater vulnerability are present. One of the water residence time methods provides results similar to the previous methods at the catchment scale, and one method yields high groundwater vulnerability values for the majority of area.
    Źródło:
    Geological Quarterly; 2017, 61, 1; 166--176
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cellular Automaton Finite Element Method Applied for Microstructure Prediction of Aluminium Casting Treated by Laser Beam
    Autorzy:
    Hajkowski, J.
    Popielarski, P.
    Ignaszak, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/382992.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    microstructure alloys prediction
    aluminium alloys
    remelting by laser beam
    tribology
    finite element method applied
    cellular automaton
    dendrite arm spacing
    prognoza mikrostruktury stopów
    stopy aluminium
    przetapianie wiązką laserową
    trybologia
    zastosowanie metody elementów skończonych
    Opis:
    What is the limit of improvement the structure obtained directly from the liquid state, with possible heat treatment (supersaturation and aging)? This question was posed by casting engineers who put arbitrary requirements on reducing the DAS (Dendrite Arm Spacing) length to less than a dozen microns. The results of tests related to modification of the surface microstructure of AlSi7Mg alloy casting treated by laser beam and the rapid remelting and solidification of the superficial casting zone, were presented in the paper. The local properties of the surface treated with a laser beam concerns only a thickness ranging from a fraction to a single mm. These local properties should be considered in the aspect of application on surfaces of non-machined castings. Then the excellent surface layer properties can be used. The tests were carried out on the surface of the casting, the surface layer obtained in contact with the metal mould, after the initial machining (several mm), was treated by the laser beam. It turned out that the refinement of the microstructure measured with the DAS value is not available in a different way, i.e. directly by casting. The experimental-simulation validation using the Calcosoft CAFE (Cellular Automaton Finite Element) code was applied.
    Źródło:
    Archives of Foundry Engineering; 2019, 3; 111-118
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Examples of new models applied in selected simulation systems with respect to database
    Autorzy:
    Ignaszak, Z.
    Hajkowski, J.
    Popielarski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/379975.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    information technology
    foundry industry
    porosity prediction
    structure prediction
    database
    thermophysical parameters
    simulation codes
    AlSi alloy
    technologia informacyjna
    przemysł odlewniczy
    przewidywanie struktury
    baza danych
    parametr termofizyczny
    stop Al-Si
    Opis:
    The tolerance of damage rule progressively meets the approval in the design casting parts procedures. Therefore, there were appeared the new challenges and expectations for permanent development of process virtualization in the mechanical engineering industry. Virtualization is increasingly developed on the stage of product design and materials technologies optimization. Increasing expectations of design and process engineers regarding the practical effectiveness of applied simulation systems with new proposed up-grades modules is observed. The purpose is to obtain simulation tools allowing the most possible realistic prognosis of the casting structure, including indication, with the highest possible probability, places in the casting that are endangered with the possibility of shrinkage– and gas porosity formation. This 3D map of discontinuities and structure transformed in local mechanical characteristics are used to calculate the local stresses and safety factors. The needs of tolerance of damage and new approach to evaluate the quality of such prognosis must be defined. These problems of validation of new models/modules used to predict the shrinkage– and gas porosity including the chosen structure parameters in the example of AlSi7 alloy are discussed in the paper.
    Źródło:
    Archives of Foundry Engineering; 2013, 13, 1; 45-50
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Computer Simulation of Cast Iron Flow in Castability Trials
    Autorzy:
    Popielarski, P.
    Hajkowski, J.
    Sika, R.
    Ignaszak, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/355454.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    application of information technology to the foundry industry
    castings defects
    cast iron
    castability trial
    Opis:
    The paper includes validation studies of the flow module of the NovaFlow&Solid simulation code. Experiments of ductile iron and gray iron casting in a spiral test of castability were carried out. Casting experiments were then carried out in industrial conditions in the Ferrex Foundry in Poznań and the results are the castability spiral length and local cast iron rate during mould cavity pouring. Simulation tests using NovaFlow&Solid Control Volume code were made. The technological castability test was used to determine thermal-physical data through simplified inversion problem. Influence of physical parameters in the database of simulation code on the spiral length obtained as the result of simulation was analyzed. It was found that critical fraction of capillary flow CLF down has the biggest impact on cast iron castability in the simulation code. The simulations resulted in defining parameters of gray iron GJL 250 and ductile iron GJS-400-15. For the parameters set, the length of castability spiral in simulations was in accordance with casting experiments.
    Źródło:
    Archives of Metallurgy and Materials; 2019, 64, 4; 1433-1439
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Methodology of Comparative Validation of Selected Foundry Simulation Codes
    Autorzy:
    Ignaszak, Z.
    Popielarski, P.
    Hajkowski, J.
    Codina, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/379771.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    solidification process
    castings defect
    simulation codes
    cast iron
    macromodel
    micro model
    proces krzepnięcia
    wada odlewu
    żeliwo
    model makro
    model mikro
    Opis:
    The validation of each simulation code used in foundry domain requires individual approach due to its specificity. This validation can by elaborated on the basis of experimental results or in particular cases by comparison the simulation results from different codes. The article concerns the influence of grey cast iron density curve and different forms of solid fraction curve Fs=f(T) on the formation of shrinkage discontinuities. Solid fraction curves applying Newtonian Thermal Analysis (NTA) were estimated. The experimental and numerical simulation tests were performed on the castings, which were made with Derivative Thermal Analysis (DerTA) standard cups. The numerical tests were realized using NovaFlow&Solid (NF&S), ProCast and Vulcan codes. In this work, the coupled influence of both curves on the dynamics of the shrinkage-expansion phenomena and on shrinkage defects prognosis in grey cast iron castings has been revealed. The final evaluation of the simulation systems usefulness should be based on validation experiment, preceded by comparing the simulation results of available systems which are proposed in given technology.
    Źródło:
    Archives of Foundry Engineering; 2015, 15, 4; 37-44
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Validation Tests of Prediction Modules of Shrinkage Defects in Cast Iron Sample
    Autorzy:
    Hajkowski, J.
    Roquet, P.
    Khamashta, M.
    Codina, E.
    Ignaszak, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/380838.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    castings defects
    shrinkage
    porosity
    ductile cast iron
    validation
    wady odlewów
    porowatość
    żeliwo sferoidalne
    Opis:
    The paper presents the results of experimental-simulation tests of expansion-shrinkage phenomena occurring in cast iron castings. The tests were based on the standard test for inspecting the tendency of steel-carbon alloys to create compacted discontinuities of the pipe shrinkage type. The cast alloy was a high-silicone ductile iron of GJS - 600 - 10 grade. The validation regarding correctness of prognoses of the shrinkage defects was applied mostly to the simulation code (system) NovaFlow & Solid CV (NFS CV). The obtained results were referred to the results obtained using the Procast system (macro- and micromodel). The analysis of sensitivity of the modules responsible for predicting the shrinkage discontinuities on selected pre-processing parameters was performed, focusing mostly on critical fractions concerning the feeding flows (mass and capillary) and variation of initial temperature of the alloy in the mould and heat transfer coefficient (HTC) on the casting - chill interface.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 1; 57-66
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Increasing Precision and Yield in Casting Production by Simulation of the Solidification Process Based on Realistic Material Data Evaluated from Thermal Analysis (Using the ATAS MetStar System)
    Autorzy:
    Persson, P-E
    Ignaszak, Z.
    Fransson, H.
    Kropotkin, V.
    Andersson, R.
    Kump, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/382019.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ductile iron
    simulation
    defect prognosis
    density calibration
    thermal analysis
    żeliwo sferoidalne
    symulacja
    prognozowanie defektów
    kalibracja gęstości
    analiza termiczna
    Opis:
    The conducted work shows and confirms how thermal analysis of grey and ductile iron is an important source for calculating metallurgical data to be used as input to increase the precision in simulation of cooling and solidification of cast iron. The aim with the methodology is to achieve a higher quality in the prediction of macro– and micro porosity in castings. As comparison objects standard type of sampling cups for thermal analysis (solidification module M ≈ 0.6 cm) is used. The results from thermal analysis elaborated with the ATAS MetStar system are evaluated parallel with the material quality (including tendency to external and internal defects) of the tested specimen. Significant temperatures and calculated quality parameters are evaluated in the ATAS MetStar system and used as input to calibrate the density curve as temperature function in NovaFlow&Solid simulation system. The modified data are imported to the NovaFlow&Solid simulation system and compared with real results.
    Źródło:
    Archives of Foundry Engineering; 2019, 1; 109-116
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Erotetic Reasoning Corpus. A data set for research on natural question processing
    Autorzy:
    Łupkowski, P.
    Urbański, M.
    Wiśniewski, A.
    Błądek, W.
    Juska, A.
    Kostrzewa, A.
    Pankow, D.
    Paluszkiewicz, K.
    Ignaszak, O.
    Urbańska, J.
    Żyluk, N.
    Gajda, A.
    Marciniak, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/103809.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Podstaw Informatyki PAN
    Tematy:
    question
    logic of question
    question processing
    erotetic reasoning
    corpus annotation
    Opis:
    The aim of this paper is to present the Erotetic Reasoning Corpus (ERC) which constitutes a data set for research on natural question processing. We describe the theoretical background, linguistic data and tags used for the annotation process. We also discuss the potential areas in which the ERC can be exploited.
    Źródło:
    Journal of Language Modelling; 2017, 5, 3; 607-631
    2299-856X
    2299-8470
    Pojawia się w:
    Journal of Language Modelling
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-10 z 10

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