Претрага
5 items
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Mechanosynthesis and structural characterization of nanocrystalline Ce1–Y O2– (x=0.1–0.35) solid solutions
Martin Fabián, Bratislav Antić, Vladimír Girman, Milica Vučinić-Vasić, Aleksandar Kremenović, Shigeru Suzuki, Horst Hahn, Vladimír Šepelák (2015)A series of nanostructuredfluorite-type Ce1–xYxO2–δ (0rxr0.35) solid solutions, prepared via highenergy milling of the CeO2/Y2O3mixtures, are investigated by XRD, HR-TEM, EDS and Raman spectroscopy. For thefirst time, complementary information on both the long-range and short-range structural features of mechanosynthesized Ce1–xYxO2–δ, obtained by Rietveld analysis of XRD data and Raman spectroscopy, is provided. The lattice parameters of the as-prepared solid solutions decrease with increasing yttrium content. Rietveld refinements of the XRD data reveal increase in microstrains in the host ceria ...Martin Fabián, Bratislav Antić, Vladimír Girman, Milica Vučinić-Vasić, Aleksandar Kremenović, Shigeru Suzuki, Horst Hahn, Vladimír Šepelák. "Mechanosynthesis and structural characterization of nanocrystalline Ce1–Y O2– (x=0.1–0.35) solid solutions" in Journal of Solid State Chemistry, Elsevier BV (2015). https://doi.org/10.1016/j.jssc.2015.06.027
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Oxygen vacancy-induced microstructural changes of annealed CeO 2-x nanocrystals
Askrabiac Sonja, Dohceviac-Mitrović Zorana, Kremenović Aleksandar, Lazarević Nenad, Kahlenberg Volker, Popović Zoran V. (2012)Askrabiac Sonja, Dohceviac-Mitrović Zorana, Kremenović Aleksandar, Lazarević Nenad, Kahlenberg Volker, Popović Zoran V.. "Oxygen vacancy-induced microstructural changes of annealed CeO 2-x nanocrystals" in Journal of Raman Spectroscopy 1 no. 43, COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA:Wiley-Blackwell (2012): 76-81. https://doi.org/10.1002/jrs.2987
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Seasonal Variations of the Zapadna Morava River Water Quality
The water samples collected from four localities of the middle course of the Zapadna Morava River during 2020 were analyzed via the selected physicochemical parameters with the aim to estimate the quality of surface water. According to the results of selected physico-chemical parameters (pH, conductivity, dissolved oxygen, chemical oxygen demand, biochemical oxygen demand), analyzed surface water show a good chemical status, while the values of nutrient content (nitrate, nitrite, ammonium ion, total phosphorus) indicated the poor chemical status especially ...Nebojša Đ. Pantelić, Jana S. Štrbački, Goran Marković, Jelena B. Popović-Đorđević. "Seasonal Variations of the Zapadna Morava River Water Quality" in Zbornik radova Savetovanja o biotehnologiji sa međunarodnim učešćem (Čačak, 12-13. mart 2021), University of Kragujevac, Faculty of Agronomy (2021). https://doi.org/10.46793/SBT26.357P
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Integrated Stratigraphy of the Middle–Upper Jurassic of the Krížna Nappe, Tatra Mountains
carbon and oxygen isotopes, radiolarians, calcareous dinoflagellates, radiolarites, Krížna Nappe, West ern Carpathians, Tethys... is necessary for any evaluation of their usefulness in chemostratigraphic correlation. Oxygen isotopes in carbonate deposits are sus- ceptible to diagenetic alteration, owing to the much higher oxygen contents of diagenetic waters, compared to their (dissolved) carbon concentrations. As a ...
... Sfudia Geo/o- gica Polonica, 115: 7–74. Wierzbowski, H., 2002. Detailed oxygen and carbon isotope stra- tigraphy of the Oxfordian in Central Poland. Geo/ogische Rundschau, 91: 304—314. Wierzbowski, H., 2004. Carbon and oxygen isotope composition of Oxfordian-Early Kimmeridgian belemnite rostra: ...
... recorded just above the Late Callovian 6&5C excursion, which coincides with a transition from green to variegated radiolarites. Key words: carbon and oxygen isotopes, radiolarians, calcareous dinoflagellates, radiolarites, Križna Nappe, 'Western Carpathians, Tethys. Manuscript received 11 November 2013 ...Renata Jach, Nevenka Đerić, Špela Goričan, Daniela Reháková. "Integrated Stratigraphy of the Middle–Upper Jurassic of the Krížna Nappe, Tatra Mountains" in Annales Societatis Geologorum Poloniae (2014)
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Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду
... Australian Mathematical Society, 2012. 156. Askrabiac S., Dohceviac-Mitrović Z., Kremenović A., Lazarević N., Kahlenberg V., Popović Zoran V.: Oxygen vacancy-induced microstructural changes of annealed CeO 2-x nanocrystals, Journal of Raman Spectroscopy, 2012 157. Lutovac S., Trajković S., Katona ...главни и одговорни уредник Душан Поломчић. Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду, Београд : Универзитет у Београду, Рударско-геолошки факултет, 2016