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    Wyświetlanie 1-3 z 3
    Tytuł:
    Wind effect simulation system in model tests of ship manoeuvrability
    Autorzy:
    Bednarek, A.
    Jóźwiak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/258700.pdf
    Data publikacji:
    2007
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    ship manoeuvrability
    wind
    wind effect simulation
    Opis:
    Dependence on hydro-meteorological conditions in the test area is an “Achilles’ heel” of physical experiment used for assessment of ship manoeuvrability. Aerodynamic forces and moments generated on the ship upperworks distort significantly the measured values. The paper presents new testing tool in the form of physical simulation of wind effect enabling quantitative evaluation of distortion of the measurement results. Another feature of the system enabling compensation of real atmospheric conditions prevailing during the experiment is also presented. The wind effects simulation arrangement includes board data acquisition and processing system, automatic control system and executive system consisting of industrial fans.
    Źródło:
    Polish Maritime Research; 2007, S 2; 64-67
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Open water manoeuvring model tests at the Joniny Test Station, Ship Hydromechanics Division, CTO S.A.
    Autorzy:
    Bednarek, A.
    Głodowski, R.
    Ołtarzewski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/258688.pdf
    Data publikacji:
    2007
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    free sailing model tests
    manoeuvring abilities of the ship
    manoeuvring tests
    model tests
    Opis:
    Although the role of computational methods (CFD) in prediction of the hydromechanic qualities of ships grows rapidly, the role of the physical experiment is still very important (if not principal). Concerning the experimental investigations focused on manoeuvring abilities of ships, there are two main approaches to be applied: open water model tests and captive model tests (Planar Motion Mechanism). The paper contains some basic information concerning the first of mentioned methods including the evolution of the measuring techniques, applied equipment and methodology. These changes result not only from technological progress, but also reflect different expectations of our Clients. In the case of mentioned open water manoeuvring model test, its specific character determines a little bit different approach, which combines some strictly scientific objectives, i.e. prediction of the manoeuvring abilities, with commercially attractive and direct demonstration of the results. Thus, in parallel with description of the measuring systems used during the tests (starting from mechanical/optical torograph system to modern laser tachimeter system), evolution of the visualization systems is also presented. In addition, some future trends in the development of the open water tests station in Joniny has been described including experimental work as well as basic/auxiliary equipment.
    Źródło:
    Polish Maritime Research; 2007, S 2; 73-76
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of environment on residence and selected demographic and clinical parameters of preschool children with IgE-dependent asthma
    Autorzy:
    Bednarek, A.
    Klepacz, R.
    Surtel, A.
    Mazur, A.
    Saran, T.
    Zarzycka, D.
    Emeryk, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2085026.pdf
    Data publikacji:
    2019
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    children
    asthma
    living environment
    clinical parameters
    Opis:
    Introduction and objective. An important role in the pathogenesis of asthma in children is played by individual parameters and environmental factors, in particular, those related to the place of residence. The aim of this study was to assess the impact of the living environment on the basic demographic and clinical parameters of preschool children with IgE-dependent asthma Materials and method. 176 children (126 from urban and 52 from rural areas) aged 5.22±0.34 years, with newly-diagnosed IgE-dependent asthma, hospitalised at the Clinic for Lung Diseases and Paediatric Rheumatology of the Prof. Antoni Gębala Children’s Hospital of Lublin, were qualified for the study. Medical documentation of the children was analysed, including the implementation of vaccinations. Due to the clinical form of the disease, patients were separated into groups with mild, moderate and severe asthma. Results. No statistically significant differentiation was observed between age and current body weight and height of the children. Similarly, gender and the clinical form of asthma were not significantly correlated with the place of residence. Children with asthma, at the time of exacerbation symptoms of the disease, living in a city, significantly more often (p <0.05) were treated with antibiotics in the hospital during hospitalization, while the value of OR (5.08) indicated that the rural environment enforces more frequent use of OGCs during asthma exacerbation therapy. In children from the urban environment, there was a significant correlation between the current body weight and serum calcium concentration, as well as a negative statistically significant correlation between the current body weight and serum selenium concentration. Conclusions. Residence does not determine the clinical course of IgE-dependent asthma in preschool children.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2019, 26, 3; 439-444
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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