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Wyszukujesz frazę "Sadło, J." wg kryterium: Autor

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    Wyświetlanie 1-9 z 9
    Tytuł:
    Badania nad przenikaniem do wód powierzchniowych pestycydów stosowanych w ochronie upraw szklarniowych
    Studies of penetration, into surface waters, of pesticides applied for protection of greenhouse cultures
    Autorzy:
    Sadlo, S.
    Rupar, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/872885.pdf
    Data publikacji:
    1991
    Wydawca:
    Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
    Tematy:
    wody powierzchniowe
    uprawy
    uprawa szklarniowa
    ochrona roslin
    preparaty chemiczne
    pestycydy
    insektycydy
    zanieczyszczenie wod
    scieki rolnicze
    probki sciekow
    wody drenarskie
    Źródło:
    Roczniki Państwowego Zakładu Higieny; 1991, 42, 2
    0035-7715
    Pojawia się w:
    Roczniki Państwowego Zakładu Higieny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electromagnetic field of extremely low frequency has an impact on selected chemical components of the honeybee
    Autorzy:
    Koziorowska, A.
    Depciuch, J.
    Białek, J.
    Woś, I.
    Kozioł, K.
    Sadło, S.
    Piechowicz, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087262.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Apis mellifera
    ELF-EMF
    FTIR
    spectra analysis
    body chemical composition
    Źródło:
    Polish Journal of Veterinary Sciences; 2020, 23, 4; 537-544
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electron paramagnetic resonance studies on silver atoms and clusters in regularly interstratified clay minerals
    Autorzy:
    Yamada, H.
    Sadlo, J.
    Tamura, K.
    Shimomura, S.
    Turek, J.
    Michalik, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/147360.pdf
    Data publikacji:
    2004
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    EPR spectroscopy
    regularly interstratified clay minerals
    silver atoms
    gamma irradiation
    Opis:
    The formation and stabilization of reduced silver species in the regularly interstratified clay minerals, trioctahedral smectite/chlorite (tri-Sm/Ch) and dioctahedral smectite/mica (di-Sm/M), have been studied by electron paramagnetic resonance (EPR) spectroscopy. Both minerals loaded with Ag+ cations after degassing and dehydration were g-irradiated at 77 K and monitored by EPR as the temperature increased. Some samples were exposed to water or methanol vapor after dehydration. In both hydrated and dehydrated samples only the doublets assigned to Ag0 atoms were observed with no evidence of the formation of Ag clusters. However, the EPR parameters of silver atoms in both matrices are different. In tri-Sm/Ch the narrow anisotropic EPR lines overlap with the broader isotropic lines, whereas in di-Sm/M only broad lines are recorded. The hyperfine splitting - Aiso(Ag0) is larger in tri-Sm/Ch than in di-Sm/M. Also the stability of Ag0 in both clay minerals is distinctly different. Ag0 doublet in di-Sm/M disappears completely above 230 K, whereas in tri-Sm/Ch it is still recorded at 310 K. It is proposed, basing on the EPR results that Ag0 atoms appear at different sites in both matrices: - in tri-Sm/Ch in the middle of smectite interlayer and in hexagonal cavities in the silicate sheets of tetrahedron layer and in di-Sm/M in hexagonal cavities only. When samples had been exposed to methanol before irradiation, the silver clusters become stabilized in the interlayer sites. In tri- Sm/Ch matrix the silver dimer Ag2+ formed by g-irradiation at 77 K is transformed to tetrameric cluster, Ag43+ at 150 K. In di-Sm/M the radiation-induced silver agglomeration proceeds in a similar way, but with a slower rate and Ag tetramer is formed only above 190 K. In both clay minerals, Ag43+ clusters decay above 250 K.
    Źródło:
    Nukleonika; 2004, 49, 4; 131-136
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    EPR and ESEEM study of silver clusters in ZK-4 molecular sieves
    Autorzy:
    Sadło, J.
    Michalik, J.
    Kevan, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/146217.pdf
    Data publikacji:
    2006
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    ZK-4
    EPR
    ESEEM
    silver clusters
    Opis:
    Silver clusters generated by g-irradiation in ZK-4 zeolites – isostructural with Linde type A (LTA) zeolite, have been studied by electron paramagnetic resonance (EPR) spectroscopy. It was shown that even a small decrease of cation capacity resulting from a lower Si/Al ratio in the framework affects distinctly silver agglomeration. In dehydrated ZK-4 with Si/Al = 1.2 and 2.4 only silver dimers are stabilized, whereas in Linde 4A silver hexamers were trapped. In ZK-4 exposed to H2O and CH3OH, silver tetramers Ag43+ efficiently are formed. The results of electron spin echo envelope modulation (ESEEM) showed that the adsorbate molecules are in close vicinity to the clusters. It was postulated that in zeolites with low cation capacity the adsorbate molecules make difficult Ag0 migration promoting the reactions with Ag+ cations located in the same sodalite cage.
    Źródło:
    Nukleonika; 2006, 51,suppl.1; 49-54
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    EPR study of highly stable methyl radicals trapped in synthetic H-rho zeolite
    Autorzy:
    Danilczuk, M.
    Sadło, J.
    Lund, A.
    Yamada, H.
    Michalik, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/147860.pdf
    Data publikacji:
    2005
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    methyl radicals
    zeolite rho
    EPR
    radiolysis
    Opis:
    Methyl radicals generated by ă-irradiation in the proton form of synthetic rho zeolite exposed to CH4 have been investigated by electron paramagnetic resonance (EPR) in the temperature range 110-370 K. Depending on the methane adsorption temperature two EPR spectra of oCH3 radicals were recorded. The isotropic quartet observed after CH4 adsorption at room temperature was assigned to oCH3 radicals freely rotating in the middle of octagonal prism. After adsorption at 413 K, the isotropic quartet is overlapped with the second signal characterized with anisotropy of hyperfine splitting and g-value. It is postulated that anisotropic signal represents the oCH3 radicals located in á-cages and strongly interacting with silicaalumina framework. The mechanisms of radiolytic formation of methyl radicals and the possible stabilization sites are also discussed.
    Źródło:
    Nukleonika; 2005, 50,suppl.2; 51-54
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    EPR study of γ-irradiated feather keratin and human fingernails concerning retrospective dose assessment
    Autorzy:
    Strzelczak, G.
    Sterniczuk, M.
    Sadło, J.
    Kowalska, M.
    Michalik, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/148231.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    EPR spectroscopy
    keratin
    melanin
    radicals
    fingernails
    dosimetry
    Opis:
    In this paper we report the results of comparative EPR studies on free radicals generated in γ-irradiated powder samples of feather keratin powder and human fingernails. In degassed samples of both materials irradiated at 77 K the major component of EPR spectrum represents sulphur-centred radicals in cysteine residues. It quickly decays after air admission at room temperature while a singlet assigned to semiquinone melanin radicals remains the only one seen. The singlet recorded with fingernails decays slowly at room temperature and might be potentially useful for dose assessment by EPR. The advantages and limitations of fingernails EPR dosimetry are discussed.
    Źródło:
    Nukleonika; 2013, 58, 4; 505-509
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    EPR study on biominerals as materials for retrospective dosimetry
    Autorzy:
    Sadło, J.
    Michalik, J.
    Stachowicz, W.
    Strzelczak, G.
    Dziedzic-Gocławska, A.
    Ostrowski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/146095.pdf
    Data publikacji:
    2006
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    dosimetry
    EPR dating
    accidental dosimetry
    hydroxyapatite
    Opis:
    Stable paramagnetic species, induced by irradiation in biominerals, can be successfully used as an EPR dosimeter in numerous domains of scientific activity. In hydroxyapatite, the main mineral component of bones, the most stable signal is assigned to CO2 - ion radical. The signal is dose dependent and allows to determine the absorbed dose in a wide range till 20 kGy, with detection limit for tooth enamel below 1 Gy. The additive dose method was applied to EPR dating of archeological objects and EPR dosimetry after accidental overexposing during radiotherapy. It was found that the age of remains excavated from the “tomb of giants” belonging to Nuraghic culture developed in Sardinia island is about 3160 years old (1160 years BC). The dose obtained by patients during the accident at the Białystok Oncological Center was evaluated at about 75 Gy. Searching for potential dosimeters among other biominerals shows that mollusc shells have very promising properties. The lowest dose detection limit was found for an Arcidae shell. Both fresh water and sea mollusc shells are useful to be used for dosimetry in the low dose range.
    Źródło:
    Nukleonika; 2006, 51,suppl.1; 95-100
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Multifrequency EPR study on radiation induced centers in calcium carbonates labeled with 13C
    Autorzy:
    Sadło, J.
    Bugaj, A.
    Strzelczak, G.
    Sterniczuk, M.
    Jaegermann, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/146101.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    aragonite
    calcite
    dosimetry
    EPR spectroscopy
    γ-irradiation
    radicals
    Opis:
    In calcite and aragonite, γ-irradiated at 77 K, several paramagnetic centers were generated and detected by EPR spectroscopy; in calcite, CO3 – (orthorhombic symmetry, bulk and bonded to surface), CO3 3–, NO3 2–, O3 –, and in aragonite CO2 – (isotropic and orthorhombic symmetry) depending on the type of calcium carbonate used. For calcium carbonates enriched with 13C more detailed information about the formed radicals was possible to be obtained. In both natural (white coral) and synthetic aragonite the same radicals were identifi ed with main differences in the properties of CO2 – radicals. An application of Q-band EPR allowed to avoid the signals overlap giving the characteristics of radical anisotropy.
    Źródło:
    Nukleonika; 2015, 60, No. 3, part 1; 429-434
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    X- and Q-band EPR study on dosimetric biomaterials
    Autorzy:
    Strzelczak, G.
    Sadło, J.
    Michalik, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/148148.pdf
    Data publikacji:
    2009
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    EPR
    X- and Q-band
    dosimeters
    bone powder and arcidae shell
    radicals
    Opis:
    Electron paramagnetic resonance (EPR) spectroscopy (X- and Q-band) was used for identification of stable radicals in: compact bone powder, shell of arcidae mollusc and crystalline alanine. The aim of our investigation was to analyze the complex EPR spectra of these materials and to identify paramagnetic species contributing to it. The most successful results were obtained in the EPR study (X- and Q-band) on deproteinized and irradiated bone powder and arcidae shell at room temperature.
    Źródło:
    Nukleonika; 2009, 54, 4; 247-250
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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