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Wyszukujesz frazę "Lazarević, Z." wg kryterium: Autor

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    Wyświetlanie 1-6 z 6
    Tytuł:
    Gas exchange capacity of Croatian common bean landraces (Phaseolus vulgaris L.) is related to their origin and growth type
    Autorzy:
    Lazarevic, B.
    Karazija, T.
    Petek, M.
    Poljak, M.
    Satovic, Z.
    Liber, Z.
    Carovic-Stanko, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/15847.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Źródło:
    Journal of Elementology; 2018, 23, 3
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characterization of Barium Titanate Ceramic Powders by Raman Spectroscopy
    Autorzy:
    Lazarević, Z.
    Romčević, N.
    Vijatović, M.
    Paunović, N.
    Romčević, M.
    Stojanović, B.
    Dohčević-Mitrović, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/1808060.pdf
    Data publikacji:
    2009-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    77.84.-s
    81.07.Bc
    81.20.Ev
    83.85.Hf
    Opis:
    Barium titanate, $BaTiO_3$ ceramic powders were prepared by mechanochemical synthesis and by the Pechini method. A powder mixture of BaO and $TiO_2$ was treated in a planetary ball mill in an air atmosphere for up to 1 h, using zirconium oxide vial and zirconium oxide balls as the milling medium. After 60 min $BaTiO_3$ phase was formed. In both ways $BaTiO_3$ ceramics were sintered after 2 h on 1300°C without pre-calcinations step. The heating rate was 10°C $\text{min}^{-1}$. The formation of phase and crystal structure of $BaTiO_3$ was approved by X-ray diffraction analysis and the Raman spectroscopy. The morphology and microstructure of obtained powders were examined by scanning electron microscopy method. Sharp phase transition from ferroelectric to paraelectric state was observed. The hysteresis loop is very well performed with regular sharp characteristic of ferroelectric materials.
    Źródło:
    Acta Physica Polonica A; 2009, 115, 4; 808-810
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preparation and Characterization of Nano Ferrites
    Autorzy:
    Lazarević, Z.
    Jovalekić, Č.
    Milutinović, A.
    Romčević, M.
    Romčević, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/1489907.pdf
    Data publikacji:
    2012-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.20.-g
    81.07.Wx
    81.20.Ev
    74.25.nd
    Opis:
    Nickel ferrite $(NiFe_2O_4)$ and manganese ferrite $(MnFe_2O_4)$ have been prepared by a soft mechanochemical route from mixture of (1) $Ni(OH)_2$ and $α-Fe_2O_3$ and (2) $Mn(OH)_2$ and $α-Fe_2O_3$ powders in a planetary ball mill. The mixture was activated for varying duration. Soft mechanochemical reaction leading to formation of the $NiFe_2O_4$ and $MnFe_2O_4$ spinel phases were followed by X-ray diffraction, Raman and infrared spectroscopy, scanning and transmission microscopy. The spinel phase formation was first observed after 4 h of milling (case 1) and after 3 h (case 2) and its formation was completed after 25 h in both cases. The synthesized $NiFe_2O_4$ and $MnFe_2O_4$ ferrites have a nanocrystalline structure with a crystallite size of about 30 and 40 nm for cases (1) and (2), respectively. There are five Raman and four IR active modes. In order to understand better the whole process of phase formation, the Mössbauer measurements were done.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 3; 682-686
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Raman Spectroscopy of Multiphonon Emission Process in Ni-Doped PbTe
    Autorzy:
    Romčević, N.
    Trajić, J.
    Hadžić, B.
    Romčević, M.
    Stojanović, D.
    Lazarević, Z.
    Kuznetsova, T.
    Khokhlov, D.
    Rudolf, R.
    Anžel, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/1807841.pdf
    Data publikacji:
    2009-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.28.+d
    63.20.-e
    78.30.-j
    Opis:
    In this paper, we present room temperature unpolarized Raman scattering spectra of Ni doped PbTe single crystal sample. Crystal of PbTe(Ni) was grown by the Bridgman method. The Ni concentration in the sample used here was 1× $10^{19}$ at./$cm^{3}$. Well resolved peaks appear at about 126, 143, 181, 362 and 724 $cm^{-1}$. The modes at 126 and 143 $cm^{-1}$, which are also observed in other telluride compounds, originate from vibrations in $TeO_2$. We assume that the mode at about 181 $cm^{-1}$ is connected to excitations of a local phonon mode in the vicinity of an impurity atom (donor $Ni^{3+}$ state). Modes at about 362 $cm^{-1}$ and 724 $cm^{-1}$ are the second and fourth harmonic of a local phonon mode, registered here due to multiphonon emission.
    Źródło:
    Acta Physica Polonica A; 2009, 116, 1; 91-92
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Contamination of the Šar Mountains Aquatorium – Kosovo with Depleted Uranium
    Autorzy:
    Stanojević, Nenad Z.
    Đokić, Jelena V.
    Lazarević, Đorđe R.
    Nikezić, Dušan P.
    Osmokrović, Predrag V.
    Powiązania:
    https://bibliotekanauki.pl/articles/27315741.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Koszalińska. Wydawnictwo Uczelniane
    Tematy:
    environmental risk
    health risk assessment
    soil contamination
    water contamination
    depleted uranium
    radiation survey
    Kosovo
    Opis:
    The main objective of this study was to estimate the environmental and health risk of the Šar Mountains (Kosovo) for depleted uranium contamination. The risk assessment of the contamination is needed since, in the spring of 1999, conflict with bombarding took place in the territory of the Western Balkans, during which depleted uranium ammunition was used. In Serbia and Montenegro, such tests were performed; based on them, some territories were decontaminated. Šar Mountains is particularly important as it is one of the few water-rich areas in Kosovo. Therefore, soil and water samples were taken from characteristic places in the Šar Mountains aquatorium. Tests of the samples were performed under well-controlled conditions. The measurement uncertainty was less than 5%. Based on the obtained results, it was concluded that there was no contamination of the Šar Mountains with depleted uranium. This conclusion can be extended to the broader area around the Šar Mountains, as it is a safe area surrounded by high mountains
    Źródło:
    Rocznik Ochrona Środowiska; 2023, 25; 1--8
    1506-218X
    Pojawia się w:
    Rocznik Ochrona Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optical Properties of Plastically Deformed Copper
    Autorzy:
    Trajić, J.
    Rudolf, R.
    Anžel, I.
    Romčević, M.
    Lazarević, N.
    Mirić, M.
    Lazarević, Z.
    Hadžić, B.
    Romčević, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/1537910.pdf
    Data publikacji:
    2010-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.20.-e
    78.30.j
    78.40.kc
    Opis:
    Pure copper (99.99), prepared in the sample of square cross-section (10 × 10 $mm^{2}$) and length about 50 mm, was extremely plastically deformed with the repeated application of Equal Channel Angular Pressing (ECAP). ECAP was applied as an effective technique for producing bulk nano-scaled structures. Optical properties of the sample were investigated using Raman spectroscopy. Two types of lines: narrow (with width of ≈ 7 $cm^{-1}$) and wide ( ≈ 40 $cm^{-1}$) are registered. Existence of two types of lines indicates that in the specimen exists nano-sized crystal structures of both Cu and CuO related with three dimensional amorphous boundary spaces, which indicates that plastic deformation of the sample did not lead to total amorphisation of the specimen.
    Źródło:
    Acta Physica Polonica A; 2010, 117, 5; 791-793
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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