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    Wyświetlanie 1-4 z 4
    Tytuł:
    Application of X-ray photoelectron spectroscopy (XPS) and a functional near infrared spectroscopy (fNIRS) in medicine
    Autorzy:
    Szklarczyk, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/1891232.pdf
    Data publikacji:
    2021-12-02
    Wydawca:
    Gdański Uniwersytet Medyczny
    Tematy:
    X-ray photoelectron spectroscopy
    XPS
    functional near infrared spectroscopy
    fNIRS
    brain activity
    Opis:
    The development of modern clinical medicine and the truthful medical diagnosis require hard physicochemical data. Furthermore, the social demands for more accurate and collected data, which refer to human health in real conditions and in real time, force the quest for techniques which would be possible to be applied in a broadly understood clinical field. In this article two techniques are described. A high vacuum technique which is an X-ray photoelectron spectroscopy (XPS), and a functional near infrared spectroscopy (fNIRS), which might be applied in vivo condition. For the both techniques, the results pointing their applicability in the clinical and modern biochemical research are described.
    Źródło:
    European Journal of Translational and Clinical Medicine; 2021, 4, 2; 86-93
    2657-3148
    2657-3156
    Pojawia się w:
    European Journal of Translational and Clinical Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A multi-analytical approach for the analysis of cation distribution in a aluminoceladonite structure
    Autorzy:
    Kądziołka-Gaweł, Mariola
    Dulski, Mateusz
    Czaja, Maria
    Krzykawski, Tomasz
    Szubka, Magdalena
    Powiązania:
    https://bibliotekanauki.pl/articles/2172615.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    aluminoceladonite
    ions position characterization isomorphic substitutions
    Fe bearing phyllosilicates
    X-ray photoelectron spectroscopy
    Mössbauer spectroscopy
    Raman spectroscopy
    glinokrzemiany
    krzemiany warstwowe
    rentgenowska spektrometria fotoelektronów
    XPS
    spektroskopia mössabuerowska
    spektroskopia Ramana
    Opis:
    In this paper cation arrangement in two samples of aluminoceladonite, emerald green and dark-green were studied by Mössbauer, Raman and X-ray photoelectron spectroscopies. The X-ray photoelectron spectroscopy (XPS) spectra obtained in the region of the Si2p, Al2p, Fe2p, K2p, and O1s core levels provided information, for the first time highlighting a route to identify the position of Si, Al, K, and Fe cations in a structure of layered silicates. The XPS analysis showed the presence of Al in tetrahedral and octahedral coordination while the K2p line indicated the possibility of K+ substitution by other cations in interlayer sites. Mössbauer spectroscopy provided information about crystal chemistry with respect to the local electronic and geometric environment around the Fe atom and to distortions of the polyhedra. It turned out that iron was located mostly in the cis-octahedra position wherein about 75% of iron appeared in the form of Fe3+. The most preferred cation combinations around Fe corresponded to 3Fe3+ ions and MgFe2+Fe3+/2MgFe3+. Raman spectroscopy illustrated aluminium substitution in silicon and iron positions wherein the concentration of the aluminium determined the degree of structural distortion within the layered system. These isomorphic substitutions implied a typical band arrangement in the hydroxyl region, which has not been observed in celadonites so far.
    Źródło:
    Acta Geologica Polonica; 2022, 72, 3; 353--368
    0001-5709
    Pojawia się w:
    Acta Geologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analiza składu chemicznego i fazowego cienkich warstw metalicznych
    Autorzy:
    Lukaszkowicz, K.
    Staszuk, M.
    Nuckowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/274354.pdf
    Data publikacji:
    2017
    Wydawca:
    Roble
    Tematy:
    dyfraktometria rentgenowska
    XPS
    spektroskopia fotoelektronów w zakresie promieniowania X
    GDS/GDOES
    emisyjna spektroskopia optyczna z wyładowaniem jarzeniowym
    cienkie warstwy metaliczne
    X-ray diffractometry
    x-ray photoelectron spectroscopy
    glow discharge optical emission spectrometry
    metallic thin layers
    Źródło:
    LAB Laboratoria, Aparatura, Badania; 2017, 22, 5; 24-29
    1427-5619
    Pojawia się w:
    LAB Laboratoria, Aparatura, Badania
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Surface Properties of Particles Emitted from Selected Coal-Fired Heating Plants and Electric Power Stations in Poland : Preliminary Results
    Autorzy:
    Pastuszka, J.S.
    Konieczyński, J.
    Talik, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/205429.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    particulates emission
    coal-fired power
    heating station
    surface chemical composition
    X-ray
    photoelectron spectroscopy
    XPS
    specific absorption
    Opis:
    The surface properties of particles emitted from six selected coal-fired power and heating plants in Poland have been studied in this work for the first time. Samples were collected beyond the control systems. Surface composition of the size-distributed particles was obtained by photoelectron spectroscopy (XPS). The reflection of the smallest, submicron particles was also measured to calculate their specific/mass absorption. The surface layer of the emitted particles was clearly dominated by oxygen, followed by silicon and carbon. The sum of the relative concentration of these elements was between 85.1% and 91.1% for coarse particles and 71.8–93.4% for fine/submicron particles. Aluminum was typically the fourth or fifth, or at least the sixth most common element. The mass absorption of the submicron particles emitted from the studied plants ranged from 0.02 m2g-1 to 0.03 m2g-1. Only specific absorption obtained for the “Nowy Wirek” heating plant was significantly higher than in other studied plants probably because the obsolete fire grate is used in this heating plant. The obtained results suggest that the power/heating-plant-emitted fine particles contain less carbonaceous material/elemental carbon on their surfaces than those that are typical in urban air.
    Źródło:
    Archives of Environmental Protection; 2014, 40, 3; 13-27
    2083-4772
    2083-4810
    Pojawia się w:
    Archives of Environmental Protection
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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