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    Wyświetlanie 1-4 z 4
    Tytuł:
    Characterization of some modern scintillators recommended for use on large fusion facilities in γ-ray spectroscopy and tomographic measurements of γ-emission profiles
    Autorzy:
    Sibczynski, P.
    Broslawski, A.
    Gojska, A.
    Kiptily, V.
    Korolczuk, S.
    Kwiatkowski, R.
    Mianowski, S.
    Moszyński, M.
    Rzadkiewicz, J.
    Swiderski, L.
    Szydlowski, A.
    Zychor, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/146137.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    gamma spectrometry
    scintillators
    decay time
    non-proportionality
    energy resolution
    detection efficiency
    fusion plasma
    Opis:
    LaBr3:Ce,CeBr3 and GAGG:Ce scintillators were investigated and the determined characteristics were compared with those obtained for the well-known and widely used CsI:Tl and NaI:Tl crystals. All the detectors were of the same size of 10 × 10 × 5 mm3. The aim of this test study was to single out scintillation detectors most suitable for γ-ray spectrometry and γ -ray emission radial profile measurements in high-temperature plasma experiments. Decay time, energy resolution, non-proportionality and full energy peak detection efficiency were measured for γ -ray energies up to 1770 keV. Due to their good energy resolution, short decay time and high detection efficiency for MeV gamma rays, LaBr3:Ce and CeBr3 scintillators are proposed as the best candidates for use especially under conditions of high count rates, which are expected in the forthcoming DT experiments.
    Źródło:
    Nukleonika; 2017, 62, 3; 223-228
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis and antibacterial properties of Fe3O4-Ag nanostructures
    Autorzy:
    Pachla, A.
    Lendzion-Bieluń, Z.
    Moszyński, D.
    Markowska-Szczupak, A.
    Narkiewicz, U.
    Wróbel, R. J.
    Guskos, N.
    Żołnierkiewicz, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/778603.pdf
    Data publikacji:
    2016
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    Fe3O4 nanoparticles
    superparamagnetic nanoparticles
    silver nanoparticles
    Opis:
    Superparamagnetic iron oxide nanoparticles were obtained in the polyethylene glycol environment. An effect of precipitation and drying temperatures on the size of the prepared nanoparticles was observed. Superparamagnetic iron oxide Fe3O4 , around of 15 nm, was obtained at a precipitation temperature of 80°C and a drying temperature of 60°C. The presence of functional groups characteristic for a polyethylene glycol surfactant on the surface of nanoparticles was confirmed by FTIR and XPS measurements. Silver nanoparticles were introduced by the impregnation. Fe3O4-Ag nanostructure with bactericidal properties against Escherichia coli species was produced. Interesting magnetic properties of these materials may be helpful to separate the bactericidal agent from the solution.
    Źródło:
    Polish Journal of Chemical Technology; 2016, 18, 4; 110-116
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Urban and rural differences in characteristics of ovarian cancer patients
    Autorzy:
    Szpurek, D.
    Moszynski, R.
    Szubert, S.
    Sajdak, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/51471.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    urban area
    rural area
    differentiation
    ovarian cancer
    patient
    residence place
    diagnosis
    Opis:
    Introduction and objective. The aim of the study was evaluation of the urban and rural differences in ovarian cancer patients’ characteristics at the moment of diagnosis. Materials and methods. The study comprised women with ovarian cancer diagnosed and treated in the Division of Gynecological Surgery of Poznan University of Medical Sciences between 2004–2011. The patients were divided into 3 groups based on their place of residence: 1) patients residing in large cities (over 50,000 people), 2) inhabitants of small towns (below 50,000 people), 3) women from rural areas. Results. Among the studied groups of patients no differences were found in the FIGO stage at diagnosis (p=0.453), histological grade of the tumour (p=0.916), histopathological types of ovarian neoplasms (p=0.431), median tumour volume (p=0.855), presence of fluid in the pouch of Douglas (p=0.872). Women with ovarian cancer residing in large cities had lower median parity (p=0.0005), higher education level status (p=0.0001), and experienced menarche at an earlier age (p=0.039). There were no differences in the use of oral contraception (p=0.93) and body mass index (p=0.23) between the women included in the study. Conclusions. There were no differences in advancement of ovarian cancer at the moment of diagnosis or in tumour type and size between women residing large cities, small towns and rural areas. Several ovarian cancer risk factors were more common among ovarian cancer patients living in urbanized areas.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2013, 20, 2
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Utilization of spent iron catalyst for ammonia synthesis
    Autorzy:
    Arabczyk, W.
    Narkiewicz, U.
    Lendzion-Bieluń, Z.
    Moszyński, D.
    Pełech, I.
    Ekiert, E.
    Podsiadły, M.
    Pelka, R.
    Jędrzejewski, R.
    Moszyñska, I.
    Sibera, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/778207.pdf
    Data publikacji:
    2007
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    katalizator żelazowy
    azotki żelaza
    nanorurka węglowa
    nanowłókna
    iron catalyst
    iron nitrides
    carbon nanotubes
    nanofibers
    Opis:
    Several methods of the utilization of spent iron catalyst for ammonia synthesis have been presented. The formation of iron nitrides of different stoichiometry by direct nitriding in ammonia in the range of temperatures between 350°C and 450°C has been shown. The preparation methods of carbon nanotubes and nanofibers where iron catalyst catalyse the decomposition of hydrocarbons have been described. The formation of magnetite embedded in a carbon material by direct oxidation of carburized iron catalyst has been also presented.
    Źródło:
    Polish Journal of Chemical Technology; 2007, 9, 3; 108-113
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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