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    Wyświetlanie 1-8 z 8
    Tytuł:
    On solvability of elliptic boundary value problems via global invertibility
    Autorzy:
    Bełdziński, Michał
    Galewski, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/255201.pdf
    Data publikacji:
    2020
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    diffeomorphism
    Dirichlet conditions
    Laplace operator
    Neumann conditions
    uniqueness
    Opis:
    In this work we apply global invertibility result in order to examine the solvability of elliptic equations with both Neumann and Dirichlet boundary conditions.
    Źródło:
    Opuscula Mathematica; 2020, 40, 1; 37-47
    1232-9274
    2300-6919
    Pojawia się w:
    Opuscula Mathematica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On unique solvability of a Dirichlet problem with nonlinearity depending on the derivative
    Autorzy:
    Bełdziński, Michał
    Galewski, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/256038.pdf
    Data publikacji:
    2019
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    diffeomorphism
    uniqueness non-potential problems
    variational methods
    monotone methods
    Palais-Smale condition
    Opis:
    In this work we consider second order Dirichelet boundary value problem with nonlinearity depending on the derivative. Using a global diffeomorphism theorem we propose a new variational approach leading to the existence and uniqueness result for such problems.
    Źródło:
    Opuscula Mathematica; 2019, 39, 2; 131-144
    1232-9274
    2300-6919
    Pojawia się w:
    Opuscula Mathematica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The potential to improve air quality by increasing the use of deep geothermal energy
    Autorzy:
    Hajto, Marek
    Kaczmarczyk, Michał
    Powiązania:
    https://bibliotekanauki.pl/articles/2124697.pdf
    Data publikacji:
    2022
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    air pollution
    equivalent emission factors
    deep geothermal energy development
    emission inventory
    Polska
    Opis:
    Increasing the use of geothermal energy may be one of the tools bringing us closer to achieving the European Commission’s objective of reducing greenhouse gas emissions by 55% by 2030. Air quality improvement plays a strategic role in achieving sustainable energy development. Both European and national legislation in this field is particularly comprehensive and effective, establishing rules for monitoring and preventing air pollution in order to avoid adverse effects on human health and the environment. Unfortunately, the effective air pollutions monitoring network currently in place in Poland, with 156 monitoring stations, mainly concerns agglomerations and cities with over 100,000 inhabitants. The lack of information on the state of pollution in smaller towns is a significant limitation in terms of research aimed at assessing the effects of corrective measures taken, such as the possible transformation of district heating systems based on RES, including the use of deep geothermal energy. This paper proposes some solutions which allow the effective estimation of air conditions in locations not covered by environmental monitoring, in the context of the potential to develop geothermal resources in the rich geothermal province of Central Poland.
    Źródło:
    Geology, Geophysics and Environment; 2022, 48, 2; 147---175
    2299-8004
    2353-0790
    Pojawia się w:
    Geology, Geophysics and Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An evaluation of organic matter dispersed in the Menilite Formation in Silesian Nappe (Polish Outer Carpathians): an optical microscopic approach
    Autorzy:
    Waliczek, Marta
    Machowski, Grzegorz
    Solecki, Marek Leszek
    Stefaniuk, Michał
    Powiązania:
    https://bibliotekanauki.pl/articles/2172903.pdf
    Data publikacji:
    2022
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    Outer Carpathians
    Menilite Formation
    organic matter
    huminite/vitrinite reflectance
    solid bitumen
    Opis:
    In this study, optical microscopic analyses were applied to evaluate the thermal maturity, characteristics of solid bitumen, and other organic matter finely dispersed in Oligocene shales of the Menilite Formation in the Iwonicz-Zdrój–Rudawka Rymanowska Fold (IRF) and Bóbrka–Rogi Fold (BRF) of the Central Carpathian Synclinorium of the Silesian Nappe, Outer Carpathians, Poland. The investigation was carried out at two-unit depths of the shallow and deeper D-1 sections (430 m – IRF and 4,300 m – BRF) and outcrop samples (BRF). The mean random huminite reflectance values indicate immature conditions with respect to hydrocarbon generation in samples from the D-1 shallow section (VRo ≈ 0.40%) and in the outcrop samples (VRo = 0.36%). The degree of thermal maturity of the organic matter from a depth of about 4,300 m – BRF based on random vitrinite (VRo ≈ 0.80%) and solid bitumen (BRo ≈ 0.65%) reflectance measurements is associated with the “oil window” for petroleum generation. The organic components dispersed in the examined Menilite Formation samples are typical for hydrocarbon-prone organic matter, suggesting the dominant kerogen type II. The potential precursor maceral for solid bitumen occurring in the examined samples from the deeper D-1 sections is largely the alginite maceral.
    Źródło:
    Geology, Geophysics and Environment; 2022, 48, 3; 243--256
    2299-8004
    2353-0790
    Pojawia się w:
    Geology, Geophysics and Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Water resources and climate change - groundwater as an alternative source of water supply
    Autorzy:
    Winid, Bogumiła
    Chruszcz‑Lipska, Katarzyna
    Maruta, Michał
    Solecki, Marek Leszek
    Powiązania:
    https://bibliotekanauki.pl/articles/2052214.pdf
    Data publikacji:
    2020
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    weather conditions
    groundwater
    water supply
    Polska
    Opis:
    In recent years, the world, including Europe, has seen a much higher incidence of extreme weather phenomena. The ongoing climatic changes have a direct impact on the condition of surface waters. Groundwater is less affected by anthropogenic pollution than surface water, since groundwater can be used in distribution systems for municipal purposes, for food purposes, sold in unit packages, and for medicinal purposes (in drinking and bathing treatments). In Poland, a country with poor water resources, the problem of water scarcity due to climate change may even increase. One solution to this problem may be the increased use of Polish groundwater resources. Hydrogeological conditions favorable to the construction of drill wells, detailed identification of available groundwater resources throughout the country and the low degree of their usage (25% on average) make it possible to increase the intake of groundwater to cover this water deficit, especially in periods of drought.
    Źródło:
    AGH Drilling, Oil, Gas; 2020, 37, 2; 5-14
    2299-4157
    2300-7052
    Pojawia się w:
    AGH Drilling, Oil, Gas
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of aerodynamic parameters of solar plane airfoil using CFD modeling
    Autorzy:
    Jaszczur, Marek
    Papis, Karolina
    Książek, Michał
    Czerwiński, Grzegorz
    Wojtas, Gabriel
    Koncewicz, Wojciech
    Nabożna, Sylwia
    Wójcik, Marcin
    Powiązania:
    https://bibliotekanauki.pl/articles/2097896.pdf
    Data publikacji:
    2021
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    solar plane
    aerodynamic parameters
    CFD modeling
    Opis:
    The technology of solar-powered aerial vehicles requires enormous financial support and further development. For this purpose, the computational fluid dynamic can be used. In order to carry out necessary analyses and model development in this research, ANSYS Fluent software was used. Using the first version of the AGH Solar Plane model, preliminary analysis of lift, drag and tearing off the stream was performed. Four new geometries were prepared on which the flattening of upper surfaces for fixing solar panels was tested. The results were validated in the aerodynamic tunnel using particle image velocimetry method. Taking into account all analyses, a number of recommendations have been prepared that will be implemented to create an aircraft, which meets all target requirements.
    Źródło:
    Computer Science; 2021, 22 (1); 123-142
    1508-2806
    2300-7036
    Pojawia się w:
    Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Physical and numerical simulation of the production chain of fasteners manufactured of 32CrB4 steel control-cooled in the stelmor process to develop the multiphase microstructure
    Autorzy:
    Piwowarczyk, Michał
    Wolańska, Natalia
    Wilkus, Marek
    Pietrzyk, Maciej
    Rauch, Łukasz
    Kuziak, Roman
    Pidvysots’kyy, Valeriy
    Radwański, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/29519769.pdf
    Data publikacji:
    2023
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    wire rod
    Stelmor process
    multiphase steels
    cold heading
    numerical modelling
    Opis:
    The development of the concept of Thermomechanical Controlled Processing (TMCP) in the wire rod rolling mill of CMC Poland has opened up new opportunities for the production of fasteners without the application of heat treatment. The crucial effect of TMCP in the case of wire rod rolling is its capability of shaping fine austenite grain size following the last pass, typically below 20–25 µm in the wire rod cross-section. This is a prerequisite for obtaining the required cold workability level for the cold forming of fasteners, even if hard constituents (bainite, martensite) are present in the wire rod structure. In this paper, the physical simulation and numerical modelling capabilities were described for the design of cooling conditions in the Stelmor process and cold heading operation. The investigated material was conventional 32CrB4 grade used for the fasteners production with the application of heat treatment.
    Źródło:
    Computer Methods in Materials Science; 2023, 23, 2; 5-16
    2720-4081
    2720-3948
    Pojawia się w:
    Computer Methods in Materials Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Field trip – Outer Flysch Carpathians and Pieniny Klippen Belt (PKB)
    Autorzy:
    Golonka, Jan
    Krobicki, Michał
    Wendorff, Marek
    Starzec, Krzysztof
    Siemińska, Aneta
    Olszewska, Barbara
    Wierzbowski, Andrzej
    Oszczypko, Nestor
    Salata, Dorota
    Tyszka, Jarosław
    Uchman, Alfred
    Sidorczuk, Magdalena
    Aubrecht, Roman
    Skupien, Petr
    Vašíček, Zdeněk
    Kowal-Kasprzyk, Justyna
    Waśkowska, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/27323884.pdf
    Data publikacji:
    2023
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Źródło:
    Geotourism / Geoturystyka; 2023, 3-4 (74-75); 5-70
    1731-0830
    Pojawia się w:
    Geotourism / Geoturystyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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