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Wyszukujesz frazę "Pilch, K." wg kryterium: Autor

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    Wyświetlanie 1-7 z 7
    Tytuł:
    The occurrence of the protected swan mussel Anodonta cygnea (Linnaeus, 1758) and the invasive alien Chinese mussel Sinanodonta woodiana (Lea, 1834) in the fish ponds in the Wislok River Basin (SE Poland)
    Autorzy:
    Wojton, A.
    Kasprzyk, I.
    Kosciolek, P.
    Pilch, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/83121.pdf
    Data publikacji:
    2012
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Opis:
    The occurrence of the Chinese mussel Sinanodonta woodiana (Lea) was discovered in June and July 2011 in a fish pond located about 15 km north-west of Rzeszów (Subcarpathian region). Thirty six specimens (6 dead and 30 live) of the species were found. The Chinese mussel was absent in two other fish ponds in the same area, however the swan mussel Anodonta cygnea (L.) was found in these ponds (80 individuals: 45 dead and 35 live). At the time when the survey was conducted the ponds had already been drained for 3 to 8 months, so both populations will probably disappear from the locality. Nevertheless the new finding of the Chinese mussel in fish ponds confirms the possibility of occurrence of the species also in the waters with natu- ral thermal regime.
    Źródło:
    Folia Malacologica; 2012, 20, 2
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Neutron Diffraction Study and Deformation Behavior of a Composite Based Mg Alloy Reinforced by Short Saffil Fibers
    Autorzy:
    Farkas, G.
    Máthis, K.
    Pilch, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1402148.pdf
    Data publikacji:
    2015-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    87.64.Bx
    88.30.mj
    61.72.Hh
    Opis:
    In the present work neutron diffraction has been applied for ex situ investigation of residual stresses in Mg-4%Al-1%Ca (AX41) magnesium alloy reinforced with short Saffil fibers. Samples were deformed in compression at room temperature. Two types of fiber arrangement were investigated. In both samples the fibers were homogeneously distributed and arranged in parallel planes with a random fiber orientation. In the first sample these planes were parallel with the loading axis and in the second one they were perpendicular to the loading direction. Significant dependence of both the mechanical properties and residual strains on the fibers orientation was observed. Sample with parallel fiber arrangement showed higher hardness and lower ductility. Further the increment of residual tensile lattice strain in the matrix with a macroscopic deformation is much higher than in the other case. It was found that the residual strain evolution strongly depends on the orientation of grains in the matrix.
    Źródło:
    Acta Physica Polonica A; 2015, 128, 4; 758-761
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Test Signal Selection for Determining the Sound Scattering Coefficient in a Reverberation Chamber
    Autorzy:
    Kamisiński, T.
    Brawata, K.
    Pilch, A.
    Rubacha, J.
    Zastawnik, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/176622.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Schroeder diffusers
    scattering
    MLS
    sine sweep
    Opis:
    The paper focuses on the problem of test signal selection in determining the sound scattering coefficient in accordance with ISO 17497-1. Research shows that the use of MLS signal is preferred in this procedure. The sine sweep signal, despite its advantages, presents certain limitations if the sample is moving during measurement. An attempt has been made to develop a method that allows for minimization of error, demonstrating the dependence of the obtained values of the sound scattering coefficient on the rotational speed of the turntable and type of test signal. Conditions for the application of the sine sweep signals in continuous and discrete measurements were defined.
    Źródło:
    Archives of Acoustics; 2012, 37, 4; 405-409
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sound Diffusers with Fabric Covering
    Autorzy:
    Kamisiński, T.
    Brawata, K.
    Pilch, A.
    Rubacha, J.
    Zastawnik, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/176693.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    fabric covering
    Schroeder diffusers
    absorption
    scattering
    Opis:
    Fabric covering is often used by designers, as it can easily mask acoustic structures that do not match an interior. However, in the case of sound diffusers based on change in the phase of the reflected wave, the use of fabric covering is not without its effect on acoustics. It reduces the effectiveness of these structures and raises acoustic absorption. In the paper, the authors analyzed the acoustical properties of a selected fabric used to cover sound diffusers. Sound absorption and scattering coefficients for a system composed of sound diffusers and a fabric situated at different distances d were measured. The results were compared to the sound absorption predicted on the basis of Kuttruff’s and Mechel’s theoretical models. Analysis of the results indicates that the fabric has a significant influence on the system’s acoustic parameters. It is also observed, that fabric applied directly on a phase grating diffuser, produces higher absorption than when it is at some distance from it.
    Źródło:
    Archives of Acoustics; 2012, 37, 3; 317-322
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Comprehensive Research of the Road Acoustic Screen with Absorbing and Diffusing Surface
    Autorzy:
    Kamisiński, T.
    Kinasz, R.
    Szeląg, A.
    Rubacha, J.
    Pilch, A.
    Flach, A.
    Baruch, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/177952.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    acoustics
    mechanical strength
    environmental actions
    sound reflection
    sound diffusion
    Opis:
    The paper presents the new solution to a road acoustic screen consisting of elements which are highly diffusing and simultaneously resistant to weathering, but also characterised by a sound absorption. There is described the comprehensive research of such the road acoustic screen with absorbing and diffusing surface. The study includes screen’s resistance to wind load and snow removal, impact tests and measurements of some acoustic parameters.
    Źródło:
    Archives of Acoustics; 2015, 40, 1; 137-144
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Właściwości kompozycji poli(kwas akrylowy)/modyfikowana skrobia stosowanej jako nowe spoiwo polimerowe
    Properties of poly(acrylic acid)/modified starch compositions applied as a new polymeric binders
    Autorzy:
    Grabowska, B.
    Pilch-Pitera, B.
    Kaczmarska, K.
    Trzebicka, B.
    Mendrek, B.
    Drożyński, D.
    Łątka, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/947345.pdf
    Data publikacji:
    2015
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
    Tematy:
    poli(kwas akrylowy)
    modyfikowana skrobia
    kompozycja polimerowa
    stabilność
    spoiwa odlewnicze
    poly(acrylic acid)
    modified starch
    polymer composition
    stability
    foundry binders
    Opis:
    Zbadano stabilność wybranych właściwości fizykochemicznych nowych, ekologicznych spoiw polimerowych w postaci wodorozcieńczalnych kompozycji poli(kwas akrylowy)/sól sodowa karboksymetyloskrobi (PAA/CMS-Na). Wodną kompozycję PAA/CMS-Na przechowywano w zamkniętych naczyniach w temp. 10 °C. Podczas trzymiesięcznego przechowywania badano zmiany zabarwienia, lepkości, kąta zwilżania szkła kwarcowego, struktury oraz rozkładu wymiarów cząstek spoiwa i na tej podstawie dokonano wstępnej oceny stabilności kompozycji. Sporządzono i utwardzono masy formierskie z udziałem wodnej kompozycji PAA/CMS-Na i określono ich wytrzymałość na zginanie. Stwierdzono, że w założonym czasie przechowywania, w warunkach zbliżonych do panujących w odlewni, nowe spoiwo nie traci właściwości wiążących ziarna piasku osnowy w masie formierskiej.
    The selected physicochemical properties of water-thinnable poly(acrylic acid)/sodiumsalt of carboxymethyl starch (PAA/CMS-Na) compositions — new environmentally friendly polymer binding agents — were investigated as a function of time. The aqueous composition PAA/CMS-Na was stored in closed vessels in a cooling chamber at 10 °C. During the three-month storage period the changes of coloration, viscosity, wetting angle on quartz glass, structure and size distribution of the binding agent particles were studied. On this basis, the stability of the binder properties was preliminarily evaluated. Additionally, the moulding sands containing an aqueous composition PAA/CMS-Naas a binder (stored for a week or three months) were prepared, hardened and subjected to the bending strength tests. It was found, that after three months of storage under conditions resembling those found in a foundry the new binder did not lose its properties as a binding agent for the moulding sand.
    Źródło:
    Polimery; 2015, 60, 3; 179-185
    0032-2725
    Pojawia się w:
    Polimery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of 6-week Nordic walking training on body composition and antioxidant status for women > 55 years of age
    Autorzy:
    Cebula, Agata
    Tyka, Anna K.
    Pilch, Wanda
    Szyguła, Zbigniew
    Pałka, Tomasz
    Sztafa-Cabała, Katarzyna
    Frączek, Barbara
    Tyka, Aleksander
    Powiązania:
    https://bibliotekanauki.pl/articles/2161882.pdf
    Data publikacji:
    2017-05-08
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    Oxidative stress
    women
    antioxidants
    Body Composition
    health training
    Nordic walking
    Opis:
    Objectives This study examined the effects of 6-week Nordic walking (NW) workout with individually customized intensity, on the body composition, and oxidative stress biomarkers for women > 55 years of age. Material and Methods Sixteen sedentary women (age 58.1±2.02 years old, body mass index (BMI) 26.74±2.72 kg/m²) worked out the NW 3 times/week over the 6-week period. Training intensity, which reflected the dominance of oxygen metabolism, was determined based on changes in physiological indicators during graded exercise on a treadmill (walking with poles). The body composition and oxidative stress biomarkers in blood were measured before and after the exercise routine. Results After the training period, body weight, body fat percentage, body mass index and uric acid levels in serum decreased significantly (p < 0.05). At the same time the plasma total antioxidant status increased considerably (p < 0.05), while the total oxidative status and the oxidized low-density lipoproteins concentration levels did not change significantly (p > 0.05). Conclusions Within a relatively short time, the Nordic walking with the customized intensity level focused on the dominance of fat metabolism, decreased body fat and improved the blood antioxidant defense system for previously sedentary women. Int J Occup Med Environ Health 2017;30(3):445–454
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2017, 30, 3; 445-454
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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