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    Wyświetlanie 1-9 z 9
    Tytuł:
    Janusza Korwin-Mikkego ocena elit politycznych III RP
    Janusz Korwin-Mikke’s assessment of political elites of the Polish Third Republic
    Autorzy:
    Rybak, Michał
    Powiązania:
    https://bibliotekanauki.pl/articles/489676.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
    Tematy:
    J. Korwin-Mikke
    elita polityczna
    III RP
    political elites
    Polish Third Republic
    Opis:
    The article presents the results of the study on the statements of Janusz Korwin-Mikke on the Polish political elite in the first 25 years of the Polish Third Republic. Aside from the synthesized material on the elite assessment itself, the criteria used by the author and key features of his character, as well as fragments of his life, which shaped and crystallized his views have been presented. Both these factors had major influence on the style and content of the publications of Janusz Korwin-Mikke. The article also presents a short description of the language used by Janusz Korwin-Mikke. There is also a presentation of the conclusions drawn by him on the possible improvement of the condition of Polish political elites and suggested actions to be taken in order to repair them.
    Źródło:
    Annales Universitatis Paedagogicae Cracoviensis. Studia Politologica; 2015, 14; 124-128
    2081-3333
    Pojawia się w:
    Annales Universitatis Paedagogicae Cracoviensis. Studia Politologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of combustion timing on pressure rise rates in a residual effected HCCI engine
    Autorzy:
    Hunicz, Jacek
    Gęca, Michał
    Kordos, Paweł
    Rybak, Arkadiusz
    Powiązania:
    https://bibliotekanauki.pl/articles/134242.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    HCCI
    boost
    pressure rise rate
    szybkość przyrostu ciśnienia
    Opis:
    Realization of a low temperature combustion concept in homogeneous charge compression ignition (HCCI) engines is a cutting-edge technology that offers clean combustion in parallel with high thermal efficiency. Low combustion temperature prevents from NOx formation whereas homogeneous mixture assures smokeless exhaust. However, achieving the production feasibility by HCCI technology is hampered by high pressure rise rates and the resulting combustion noise at a high load operation. This paper explores combustion timing parameters that are capable of maintaining permissible levels of pressure rise rates under a high load regime. On the basis of experimental data collected at a high load HCCI operation, pressure rise level was correlated with combustion duration. Furthermore, combustion duration has been found to scale with in-cylinder volume, for which 50% of mass fraction burned appeared. The results showed quantitatively limitations of engine load, pointing out on required combustion timings to achieve acceptable combustion harshness depending on engine load.
    Źródło:
    Combustion Engines; 2019, 58, 3; 46-50
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hydropneumatic suspension testing of a wheeled armoured personnel carrier
    Autorzy:
    Hryciów, Zdzisław
    Rybak, Piotr
    Wojciechowski, Michał
    Wachowiak, Przemysław
    Kalicki, Bartosz
    Powiązania:
    https://bibliotekanauki.pl/articles/24200841.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
    Tematy:
    hydropneumatic suspension
    polytropic process
    spring characteristic
    static deflection
    Opis:
    The purpose of this study was to determine the effect of gas pressure and temperature on the spring characteristic of a HP strut used in a wheeled armoured personnel carrier. The research was performed based on a simulation model. Data to validate the model were obtained during experimental tests. The results indicate, among other things, that the friction generated in the seals is an important source of resistance force. Comparison of the simulation results with the measured characteristics indicates a proper modelling of the strut operation. Simulation studies have indicated that it is easy to modify the required suspension parameters by adjusting the initial gas pressure. A linear effect of pressure on static deflection can be assumed. Temperature has a strong influence on the spring characteristic. When it changes, significant changes in vehicle height are observed due to the lack of a compensation system. The temperature changes are not only due to changes in ambient temperature, but also by intense heating of the HP struts caused by the vehicle moving over rough terrain.
    Źródło:
    Eksploatacja i Niezawodność; 2023, 25, 2; art. no. 162497
    1507-2711
    Pojawia się w:
    Eksploatacja i Niezawodność
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative study of combustion and emissions of diesel engine fuelled with FAME and HVO
    Autorzy:
    Hunicz, Jacek
    Krzaczek, Paweł
    Gęca, Michał
    Rybak, Arkadiusz
    Mikulski, Maciej
    Powiązania:
    https://bibliotekanauki.pl/articles/2097506.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    diesel engine
    renewable fuels
    HVO
    hydrotreated vegetable oil
    emissions
    silnik Diesla
    paliwa odnawialne
    hydrorafinowany olej roślinny
    emisje
    Opis:
    This study investigates combustion and emission characteristics of a contemporary single-cylinder compression ignition engine fuelled with diesel, fatty acid methyl esters (FAME) and hydrotreated vegetable oil (HVO). These two drop-in fuels have an increasing share in automotive supply chains, yet have substantially different physical and auto-ignition properties. HVO has a lower viscosity and higher cetane number, and FAME has contrary characteristics. These parameters heavily affect mixture formation and the following combustion process, causing that the engine preoptimized to one fuel option can provide deteriorated performance and excess emissions if another sustainable option is applied. To investigate the scale of this problem, injection pressure sweeps were performed around the stock, low NOx and low PM engine calibration utilizing split fuel injection. The results showed that FAME and HVO prefer lower injection pressures than diesel fuel, with the benefits of simultaneous reduction of all emission indicators compared to DF. Additionally, reduction of injection pressure from 80 MPa to 60 MPa for biodiesels at low engine load resulted in improved brake thermal efficiency by 1 percentage point, due to reduced parasitic losses in the common rail system.
    Źródło:
    Combustion Engines; 2021, 60, 1; 72--78
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fluid pathways within shallow-generated damage zones of strike-slip faults – evidence of map-scale faulting in a continental environment, SW Permo-Mesozoic cover of the Late Palaeozoic Holy Cross Mountains Fold Belt, Poland
    Autorzy:
    Rybak-Ostrowska, Barbara
    Konon, Andrzej
    Hurai, Vratislav
    Bojanowski, Maciej
    Konon, Agnieszka
    Wyglądała, Michał
    Powiązania:
    https://bibliotekanauki.pl/articles/139101.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    strike-slip faulting
    fluid pathways
    continental environments
    Chmielnik releasing stepover
    Permo-Mesozoic cover
    Holy Cross Mountains Fold Belt
    uskok przesuwczy
    środowisko lądowe
    pokrywa
    perm
    mezozoik
    Góry Świętokrzyskie
    Opis:
    The damage zones of exhumed strike-slip faults dissecting Jurassic carbonates in the south-western part of the Late Palaeozoic Holy Cross Mountains Fold Belt reveal second-order faults and fractures infilled with syntectonic calcite. The subsequent development of a structural pattern of microscopic fault-related structures and calcite infillings reflects the activity of strike-slip faults that began in the Late Cretaceous (Late Maastrichtian) and lasted until the early Miocene (Langhian). The fabric of the syntectonic veins provides insights into the evolution of the permeable fault-related structures that were the main pathways for fluid flow during fault activity. Microstructural study of calcite veins coupled with stable isotope and fluid inclusion data indicates that calcite precipitated primarily in a rock-buffered system related to strike-slip fault movement, and secondarily in a partly open system related to the local activity of the releasing Chmielnik stepover or the uplift of the area. The presence of meteoric fluids descending from the surface into damage zones suggest that the strike-slip faulting might have taken place in a nonmarine, continental environment.
    Źródło:
    Acta Geologica Polonica; 2020, 70, 1; 1-29
    0001-5709
    Pojawia się w:
    Acta Geologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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