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    Wyświetlanie 1-15 z 15
    Tytuł:
    Improvement of the Microwave Imaging System by Deconvolution of the Antenna Pulse Response
    Autorzy:
    Bury, M.
    Yashchyshyn, Y.
    Modelski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/226958.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    microwave imaging
    antenna pulse response
    deconvolution
    Opis:
    In the paper a microwave imaging system and its algorithm of image reconstruction from the raw measurement data were briefly introduced. Authors observed that pulse responses of the antennas used in the system have similar duration to the measurement pulse and therefore also contribute to the limits of system resolution. Paper presents a simple method that improves the system performance by additional deconvolution of the antenna pulse responses. Method was verified experimentally.
    Źródło:
    International Journal of Electronics and Telecommunications; 2010, 56, 3; 209-214
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Television as a source of information on health and illness – review of benefits and problems
    Autorzy:
    Burzyńska, J.
    Binkowska-Bury, M.
    Januszewicz, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1917643.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Medyczny w Białymstoku
    Tematy:
    Television
    Health
    Health information
    Health Education
    Opis:
    Despite the dominating and expansive role of the Internet, global reports on mass media still find television as the most popular source of information on health. The following paper is an attempt to systematize the knowledge concerning television broadcast dedicated to the subject of health and illness. The authors aimed to identify the benefits and limitations resulting from the use of the audiovisual means to convey information on health; diagnosing potential threats and explaining trends and possibilities of making use of the television to educate and improve health awareness of the viewers. A critical review of 47 papers published in Polish and international scientific journals in years 2010 – 2014 has been performed. They were categorized into 8 following sections: 1) health information in medical television series; 2) subject of health in reality television programmes and medical talk-shows; 3) health in television news programmes; 4) television and the issue of physical activity and nutrition; 5) television and selected stimulants (cigarettes/alcohol); 6) television and information about cancer and other diseases; 7) public service announcements concerning health/PSA; 8) television and health education/ edutainment. In the light of the conducted review, the television presents itself as a promising source of information on the topic of health and illness which, provided one maintains a cautious attitude as well as moderation, influences the level of knowledge of the viewers, identification of simple symptoms and constitutes an important source of education in terms of prevention and avoiding risk behaviours.
    Źródło:
    Progress in Health Sciences; 2015, 5, 2; 174-184
    2083-1617
    Pojawia się w:
    Progress in Health Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Psychosocial factors and health-related behavior among students from South-East Poland
    Autorzy:
    Binkowska-Bury, M
    Kruk, W.
    Szymanska, J.
    Marc, M.
    Penar-Zadarko, B.
    Wdowiak, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/51264.pdf
    Data publikacji:
    2010
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    Polska
    South-Eastern Poland
    student
    socio-demographic factor
    life style
    knowledge
    health-related behaviour
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2010, 17, 1; 107-113
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pro-health behaviours - a sense of coherence as the key to a healthy lifestyle in rural areas?
    Autorzy:
    Binkowska-Bury, M.
    Iwanowicz-Palus, G.
    Kruk, W.
    Perenc, L.
    Mazur, A.
    Filip, R.
    Januszewicz, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/49434.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Medycyny Wsi
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2016, 23, 2
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Utilization of the horizontal ground heat exchanger in the heating and cooling system of a residential building
    Autorzy:
    Hanuszkiewicz-Drapała, M.
    Bury, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/240110.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    heat pump
    ground heat exchanger
    heating system
    numerical modelling
    pompa ciepła
    gruntowy wymiennik ciepła
    system grzewczy
    modelowanie numeryczne
    Opis:
    This paper presents the results of thermodynamic analyses of a system using a horizontal ground heat exchanger to cool a residential building in summer and heat it in the autumn-winter period. The main heating device is a vapour compression heat pump with the ground as the lower heat source. The aim of the analyses is to examine the impact of heat supply to the ground in the summer period, when the building is cooled, on the operation of the heating system equipped with a heat pump in the next heating season, including electricity consumption. The processes occurring in cooling and heating systems have an unsteady nature. The main results of the calculations are among others the time-dependent values of heat fluxes extracted from or transferred to the ground heat exchanger, the fluxes of heat generated by the heat pump and supplied to the heated building by an additional heat source, the parameters in characteristic points of the systems, the temperature distributions in the ground and the driving electricity consumption in the period under analysis. The paper presents results of analysis of cumulative primary energy consumption of the analyzed systems and cumulative emissions of harmful substances.
    Źródło:
    Archives of Thermodynamics; 2016, 37, 1; 42-72
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    CFD modeling of passive autocatalytic recombiners
    Autorzy:
    Orszulik, M.
    Fic, A.
    Bury, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/147615.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    nuclear reactor
    hydrogen
    passive autocatalytic recombiners
    CFD modeling
    Opis:
    This study deals with numerical modeling of passive autocatalytic hydrogen recombiners (PARs). Such devices are installed within containments of many nuclear reactors in order to remove hydrogen and convert it to steam. The main purpose of this work is to develop a numerical model of passive autocatalytic recombiner (PAR) using the commercial computational fluid dynamics (CFD) software ANSYS-FLUENT and tuning the model using experimental results. The REKO 3 experiment was used for this purpose. Experiment was made in the Institute for Safety Research and Reactor Technology in Julich (Germany). It has been performed for different hydrogen concentrations, different flow rates, the presence of steam, and different initial temperatures of the inlet mixture. The model of this experimental recombiner was elaborated within the framework of this work. The influence of mesh, gas thermal conductivity coefficient, mass diffusivity coefficients, and turbulence model was investigated. The best results with a good agreement with REKO 3 data were received for k-ε model of turbulence, gas thermal conductivity dependent on the temperature and mass diffusivity coefficients taken from CHEMKIN program. The validated model of the PAR was next implemented into simple two-dimensional simulations of hydrogen behavior within a subcompartment of a containment building.
    Źródło:
    Nukleonika; 2015, 60, 2; 347-353
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of radiative heat transfer impact in cross-flow tube and fin heat exchangers
    Autorzy:
    Hanuszkiewicz-Drapała, M.
    Bury, T.
    Widziewicz, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/240216.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    heat exchangers
    radiative heat transfer
    numerical model
    experimental validation
    wymienniki ciepła
    radiacyjna wymiana ciepła
    model numeryczny
    weryfikacja doświadczalna
    Opis:
    A cross-flow, tube and fin heat exchanger of the water – air type is the subject of the analysis. The analysis had experimental and computational form and was aimed for evaluation of radiative heat transfer impact on the heat exchanger performance. The main element of the test facility was an enlarged recurrent segment of the heat exchanger under consideration. The main results of measurements are heat transfer rates, as well as temperature distributions on the surface of the first fin obtained by using the infrared camera. The experimental results have been next compared to computational ones coming from a numerical model of the test station. The model has been elaborated using computational fluid dynamics software. The computations have been accomplished for two cases: without radiative heat transfer and taking this phenomenon into account. Evaluation of the radiative heat transfer impact in considered system has been done by comparing all the received results.
    Źródło:
    Archives of Thermodynamics; 2016, 37, 1; 99-112
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Electric and Magnetic Fields on Dielectric Response of Oil-Based Ferrofluid
    Autorzy:
    Hardoň, Š.
    Kúdelčík, J.
    Bury, P.
    Gutten, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1030433.pdf
    Data publikacji:
    2018-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    47.65.Cb
    77.22.Gm
    77.22.Ch
    75.50.Mm
    75.75.Jn
    Opis:
    The changes in dielectric parameters and structural arrangement of transformer oil based ferrofluid with magnetic nanoparticles upon the effect of an external magnetic field and an electric field were studied by dielectric spectroscopy. The frequency dependence of dissipation factor was measured within the frequency range from 1 mHz to 10 kHz by a capacitance method. In the presence of the magnetic field the interaction between the magnetic field and magnetic moments of nanoparticles led to the aggregation of nanoparticles. The electric field had also effects on the change in the electric dipole moment of particles by transfer of counterions. The observed low frequency relaxation maximum of dissipation factor was explained by Schwarz theory of electric double layer polarization. The shift of this maximum with the intensity of electric was caused by change of relaxation time of the nanoparticles-counterions systems.
    Źródło:
    Acta Physica Polonica A; 2018, 133, 3; 477-479
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A model of hydrogen passive autocatalytic recombiner and its validation via CFD simulations
    Autorzy:
    Orszulik, M.
    Fic, A.
    Bury, T.
    Składzień, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/240045.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    nuclear reactor
    containment
    hydrogen
    numerical modeling
    CFD
    reaktor jądrowy
    powstrzymywanie
    wodór
    modelowanie numeryczne
    Opis:
    Passive autocatalytic recombiners (PAR) is the only used method for hydrogen removal from the containment buildings in modern nuclear reactors. Numerical models of such devices, based on the CFD approach, are the subject of this paper. The models may be coupled with two types of computer codes: the lumped parameter codes, and the computational fluid dynamics codes. This work deals with 2D numerical model of PAR and its validation. Gaseous hydrogen may be generated in water nuclear reactor systems in a course of a severe accident with core overheating. Therefore, a risk of its uncontrolled combustion appears which may be destructive to the containment structure.
    Źródło:
    Archives of Thermodynamics; 2013, 34, 4; 257-266
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Structural Changes in Liquid Crystals Doped with Rod-Like Magnetic Particles Studied by Surface Acoustic Waves
    Autorzy:
    Bury, P.
    Veveričík, M.
    Kúdelčík, J.
    Kopčanský, P.
    Timko, M.
    Závišová, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/1032787.pdf
    Data publikacji:
    2017-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.30.Gd
    75.50.Mm
    43.35.Bf
    Opis:
    The effect of rod-like magnetic particles on liquid crystal (6CHBT) structural changes in electric and weak magnetic fields were studied by means of the attenuation of surface acoustic wave of frequency 30 MHz propagating along ferronematic liquid crystals. Three low volume concentrations (Φ=1×10¯⁵, 1×10¯⁴ and 1×10¯³) of rod-like magnetic particles were added to liquid crystal during its isotropic phase. Several measurements including the investigation of the effects of electrical and magnetic fields applied both separately and in conjunction as well as the influence of temperature on the surface acoustic wave attenuation were performed. The distinctive surface acoustic wave attenuation responses induced by both electric and magnetic fields in studied ferronematic liquid crystals have been observed suggesting both structural changes and the orientational coupling between magnetic moments of magnetic particles and the director of the liquid crystal. Obtained results confirmed the significant influence of the presence of magnetic particles on the structural properties and resulting behavior of 6CHBT liquid crystal.
    Źródło:
    Acta Physica Polonica A; 2017, 131, 4; 913-915
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Volatile organic compounds removal from vehicle interior based on photocatalytic solution
    Autorzy:
    Bury, P.
    Górniak, A.
    Janicka, A.
    Zawiślak, M.
    Michniewicz, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/245126.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    automotive vehicle
    benzene-toluene-xylene compounds
    vehicle interior
    indoor air
    photocatalysis
    Opis:
    The article presents results of research work which aim was development of solution for volatile organic compounds (VOCs) removal from vehicle indoor air. VOCs, especially benzene, toluene, and xylene (BTX), are air pollutants responsible for many civilizational diseases because of its carcinogenic and mutagenic properties. Concentration of those substances can be even few times higher in micro atmosphere of vehicle cabin than in other indoor atmospheres [1]. The aim of the scientific cooperation between Dr. Schneider Automotive Polska and the Wroclaw University of Science and Technology (WUST) is research on innovative (international range), product development – photocatalytic reactor characterized by Volatile Organic Compounds, especially BTX removal properties. The BTX reduction effectiveness, caused by photocatalytic reactor application in vehicle ventilation system, was subjected to in-depth analysis. The results showed difference on not only maximal benzene, toluene, and xylene reduction (separately) but also in the pattern of response surface. In some tested parameters, the hazardous compounds (as a BTX sum) were reduced for almost 70%. The photocatalytic reactor seems to be prospective solution for air quality improvement in any vehicle cabin.
    Źródło:
    Journal of KONES; 2018, 25, 3; 77-84
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Temperature on the Magneto-Dielectrics Effect of Oil-Based Ferrofluid
    Autorzy:
    Kúdelčík, J.
    Hardoň, Š.
    Bury, P.
    Timko, M.
    Kopčanský, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1030417.pdf
    Data publikacji:
    2018-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    47.65.Cb
    77.22.Gm
    77.22.Ch
    Opis:
    The effect of temperature on the magneto-dielectrics behavior was studied by dielectric spectroscopy in the transformer oil-based ferrofluid with magnetic nanoparticles upon the effect of an external magnetic field. The frequency dependence of complex permittivity and dissipation factor were measured within the frequency range from 1 mHz to 10 kHz at different temperatures by a capacitance method. The dielectrics parameters were measured as a function of the external magnetic field in the range of 0-200 mT, parallel to the direction of the electric field as a function of temperature in the range of 15-35°C. The interaction between magnetic field and magnetic moments of nanoparticles led to the aggregation of magnetic nanoparticles to new structures which had influence on dielectric parameters. The dependence of these parameters at constant magnetic field on angle between the direction of the electric and magnetic fields (anisotropy) has been measured, too.
    Źródło:
    Acta Physica Polonica A; 2018, 133, 3; 483-485
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study of Structural Changes of Water-Based Magnetic-Fluid by Acoustic Spectroscopy
    Autorzy:
    Kúdelčík, J.
    Hardoň, Š.
    Bury, P.
    Timko, M.
    Kopčanský, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1032248.pdf
    Data publikacji:
    2017-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Mm
    75.75.Jn
    Opis:
    The effect of an external magnetic field on the changes in structural arrangement of magnetic nanoparticles in water based magnetic fluid was studied by acoustic spectroscopy. When a magnetic field is increased, the interaction between the magnetic field and the magnetic moments of nanoparticles leads to the orientation of magnetic nanoparticles and their following aggregation to long chains that cause the increase of acoustic attenuation. The attenuation of acoustic waves measured for jump changes of the magnetic field to 100, 200, and 300 mT at temperature 20°C showed that the changes of acoustic attenuation increased slowly to a stabilized state that after switching off the magnetic field decreased immediately to initial value. The dependence of attenuation of acoustic waves at constant magnetic field on angle between the wave vector and direction of the applied magnetic field (attenuation anisotropy) has been measured, too. The measured anisotropy of acoustic attenuation attested structural changes of magnetic fluid in the magnetic field.
    Źródło:
    Acta Physica Polonica A; 2017, 131, 4; 919-921
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Temperature Effect on the Structure of Transformer Oil Based Magnetic Fluids Using Acoustic Spectroscopy
    Autorzy:
    Kúdelčík, J.
    Bury, P.
    Drga, J.
    Kopčanský, P.
    Závišová, V.
    Timko, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1427527.pdf
    Data publikacji:
    2012-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Mm
    75.75.Jn
    Opis:
    The changes in structural arrangement in transformer oil based magnetic fluids upon the effect of an external magnetic field and temperature were studied by acoustic spectroscopy. The attenuation of acoustic waves was measured as a function of an external magnetic field in the range of 0-300 mT, parallel to the direction of the field and as a function of temperature in the range of 15-35°C for various magnetic nanoparticles concentrations. The strong influence of the steeped magnetic field on the acoustic wave attenuation was detected and its hysteresis was observed, too. When a magnetic field is swept at a constant rate, the dominant interactions between the external magnetic field and the magnetic moment of the nanoparticles occur, leading to the aggregation of magnetic nanoparticles and clusters formation. However, the temperature of magnetic fluids has very important influence on the obtained dependences, where the mechanism of thermal motion acts against the cluster creation. The observed influences of magnetic field and temperature on the investigated magnetic liquids structure are discussed.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 5-6; 1169-1171
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thromboelastographic profile of goat blood after the experimental injury of the femoral artery and use of QuikClot gauze and Celox gauze dressings
    Autorzy:
    Sobiech, P.
    Adamiak, Z.
    Holak, P.
    Jastrzebski, P.
    Rogowski, J.
    Brzezinski, M.
    Bury, K.
    Jalynski, M.
    Baumgartner, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/30214.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    The aim of this study was to evaluate the suitability of thromboelastometry for the analysis of blood test results in goats after the use of hemostatic dressings to control massive bleeding. The study was carried out on 12 goats, 6 animals in each of two subgroups. In all experimental animals incision of the femoral artery was performed, and bleeding was controlled with QuikClot gauze in the first group and Celox gauze in the second group. Dressings were applied for 60 minutes. Blood samples for thromboelastometry were collected from the jugular vein before the incision and 60 min after the application of a dressing. Clotting time (CT), clot formation time (CFT), maximum clot firmness (MCF) and α angle (°) were measured in three standard ROTEM assays (system with generation of reaction curve, numerical parameters and size of the blood clot): intrinsic coagulation pathway (INTEM), extrinsic coagulation pathway (EXTEM) and functional fibrinogen (FIBTEM). Complete hemostasis of the injured femoral artery was found in all goats. No significant differences between pre- and post-incision thromboelastometric parameters were found in any tests in any of the groups, which indicates that the use of dressings was not associated with blood coagulation disorders. This study is the first to describe the use of thromboelastometry in goats for the assessment of clot formation and hemostatic disorders.
    Źródło:
    Polish Journal of Veterinary Sciences; 2017, 20, 1
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-15 z 15

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