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    Wyświetlanie 1-11 z 11
    Tytuł:
    The Impact of IFRS 9 on the Link Between Lending and the Capital Ratio in Publicly Traded Banks in Poland
    Autorzy:
    Bojar, Paweł
    Olszak, Małgorzata Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/2162651.pdf
    Data publikacji:
    2022-07-31
    Wydawca:
    Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania
    Tematy:
    loans growth rate
    capital ratio
    expected credit loss
    IRFS 9
    Opis:
    This paper aims to determine the role of the expected credit loss approach as defined in IFRS 9 in the effects of capital ratio on loans growth in publicly traded banks in Poland. To resolve this problem, we apply semi-annual data of individual banks in 2012–2018. Using several estimation techniques, we find that in the period of implementation of the expected credit loss approach, the links between loans growth and the capital ratio were enhanced. In particular, lending growth is more sensitive to levels of the capital ratio. These results are important with respect to the goal of bank financial stability and have implications for the conduct of macroprudential policy.
    Źródło:
    Journal of Banking and Financial Economics; 2022, 1(17); 60-73
    2353-6845
    Pojawia się w:
    Journal of Banking and Financial Economics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ składu chemicznego, wariantowej obróbki cieplnej oraz plastycznej i cieplnej na charakter pękania stopów na osnowie fazy międzymetalicznej Ni↓3Al
    Autorzy:
    Bojar, Zbigniew.
    Zasada, Dariusz.
    Jóźwik, Paweł.
    Powiązania:
    Biuletyn Wojskowej Akademii Technicznej 2002, nr 11, s. 45-58
    Data publikacji:
    2002
    Tematy:
    Stopy badanie
    Pękanie
    Metale obróbka cieplna obróbka plastyczna
    Opis:
    Rys.; Bibliogr.; Abstr., Rez., streszcz.
    Dostawca treści:
    Bibliografia CBW
    Artykuł
    Tytuł:
    Low frequency electromagnetic waves increase human sperm motility – A pilot study revealing the potent effect of 43 kHz radiation
    Autorzy:
    Wdowiak, Artur
    Mazurek, Paweł A.
    Wdowiak, Anita
    Bojar, Iwona
    Powiązania:
    https://bibliotekanauki.pl/articles/2162024.pdf
    Data publikacji:
    2018-12-20
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    electromagnetic radiation
    semen motility
    sperm hyperactivation
    sperm kinetic variables
    metal detecting
    infertility
    Opis:
    Objectives Abnormalities in the timing and course of spermatozoa capacitation and hyperactivation underlie common pathologies related to male infertility. Recent data shows that low frequency electromagnetic waves may influence cell membrane potential and permeability. It is therefore possible that low frequency electromagnetic waves could affect the maturation and motility processes of spermatozoa. The 43-kHz wave generator was used for modeling the impact of environmental exposure to low frequency electromagnetic radiation on human sperm. Material and Methods Sperm samples were gathered from 103 fertile, healthy men aged 25–30 years old and performed computer-assisted sperm analysis. After initial examination, each participant’s semen sample was divided into 2 aliquots (control and experimental) and placed in separate automated incubators. The samples constituting the experimental group were placed into the exposure system that emitted 43-kHz electromagnetic waves. Sperm motility was assessed at 3 h, 12 h and 24 h. Results Exposure to a 43-kHz radio frequency increased the percentage of sperm in progressive motility by up to 5.8% and the velocity of said sperm by up to 2 μm/s. Moreover, the total number of hyperactivated spermatozoa was significantly increased in the semen exposed to the electromagnetic signal. Conclusions In vivo environmental exposure to 43-kHz waves may promote the development of infertility related to premature capacitation outside of the vaginal tract. Exposing semen to this particular frequency may also boost the capacitation and hyperactivation of spermatozoa in vitro, prior to conducting assisted reproductive therapies.Int J Occup Med Environ Health 2018;31(6):723–739
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2018, 31, 6; 723-739
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of electromagnetic waves on human reproduction
    Autorzy:
    Wdowiak, Artur
    Mazurek, Paweł A.
    Wdowiak, Anita
    Bojar, Iwona
    Powiązania:
    https://bibliotekanauki.pl/articles/989982.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    human reproduction
    electromagnetic waves
    infertility
    exposure to electromagnetic fields
    Opis:
    Electromagnetic radiation (EMR) emitting from the natural environment, as well as from the use of industrial and everyday appliances, constantly influence the human body. The effect of this type of energy on living tissues may exert various effects on their functioning, although the mechanisms conditioning this phenomenon have not been fully explained. It may be expected that the interactions between electromagnetic radiation and the living organism would depend on the amount and parameters of the transmitted energy and type of tissue exposed. Electromagnetic waves exert an influence on human reproduction by affecting the male and female reproductive systems, the developing embryo, and subsequently, the foetus. Knowledge concerning this problem is still being expanded; however, all the conditionings of human reproduction still remain unknown. The study presents the current state of knowledge concerning the problem, based on the latest scientific reports.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2017, 24, 1
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical analysis of species diffusion and methanol decomposition in thermocatalytic reactor based on the Intermetallic phase of Ni3Al for low Reynolds numbers
    Autorzy:
    Ziółkowski, Paweł
    Stajnke, Michał
    Jóźwik, Paweł
    Bojar, Zbigniew
    Ziółkowski, Piotr Józef
    Badur, Janusz
    Powiązania:
    https://bibliotekanauki.pl/articles/1955275.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Gdańska
    Tematy:
    CFD
    thermocatalytic reactor
    intermetallic phase of Ni3Al
    Opis:
    Numerical modelling of hydrogen production by means of methanol decomposition in a thermocatalytic reactor using corrugated foil made of the Ni3Al intermetallic phase is shown in the paper. Experimental results of the flow analysis of mixtures containing helium and methanol in a thermocatalytic reactor with microchannels were used for the initial calibration of the CFD calculations (calculations based on the Computational Fluid Dynamics method). The reaction of the thermocatalytic methanol decomposition was modelled based on experimental data, considering the size of the active surface. The drop in the methanol concentration at the inlet to the reactor, ten millimetres in front of the thermocatalytic region, is associated with the diffusion of streams of other components, mainly hydrogen and carbon monoxide. The commercial CFD code was expanded by User Defined Functions (UDFs) to include surface chemical reaction rates in the interphase between the fluid and the solid. Extrapolation of data by means of the implemented numerical model enabled the assessment of the minimum length of microreactor channels and prediction of the optimal dimension at the system outlet. The results obtained by means of numerical calculations were calibrated and compared with the experimental data, confirming a satisfactory consistency of the data.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2018, 22, 3; 211--224
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mathematical modeling of hydrogen production performance in thermocatalytic reactor based on the intermetallic phase of Ni3Al
    Autorzy:
    Badur, Janusz
    Stajnke, Michał
    Ziółkowski, Paweł
    Jóźwik, Paweł
    Bojar, Zbigniew
    Ziółkowski, Piotr Józef
    Powiązania:
    https://bibliotekanauki.pl/articles/240134.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    thermal decomposition
    species transport
    catalyst
    CFD
    rozkład termiczny
    katalizator
    Opis:
    The main goal of the considered work is to adjust mathematical modeling for mass transfer, to specific conditions resulting from presence of chemical surface reactions in the flow of the mixture consisting of helium and methanol. The thermocatalytic devices used for decomposition of organic compounds incorporate microchannels coupled at the ends and heated to 500ºC at the walls regions. The experiment data were compared with computational fluid dynamics results to calibrate the constants of the model’s user defined functions. These extensions allow to transform the calculations mechanisms and algorithms of commercial codes adapting them for the microflows cases and increased chemical reactions rate on the interphase between fluid and solid, specific for catalytic reactions. Results obtained on the way of numerical calculations have been calibrated and compared with the experimental data to receive satisfactory compliance. The model has been verified and the performance of the thermocatalytic reactor with microchannels under hydrogen production regime has been investigated.
    Źródło:
    Archives of Thermodynamics; 2019, 40, 3; 3-26
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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