Претрага
155 items
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Mineralogical analysis of a clay body from Zlakusa, Serbia, used in the manufacture of traditional pottery
... (Djordjević, 2013). The next step is to mix the clay and calcite powder into a homogeneous mass that is ready for processing. From there, a piece of clay body is taken, kneaded by hand and then used to construct a vessel on a hand-driven winch. An investigation was carried out on three samples: raw ...
... X-ray fluorescence (XRF) spectros- copy using a PANalytical MiniPal 4 XREF spectrometer equipped with a high-resolution silicon drift detector (SDD). Differential thermal analysis (DTA) was performed on a modernized ADAMEL furnace equipped with a Pt-PtRh thermocouple and BK PRECISION XLN15010 ...
... formation of a new crystalline phase, primarily muillite or pseudomuillite, was observed in the CIMx sample at ~950% (Speil et al., 1945; Foldvari, 2011) in the form of a strong exo- thermic peak. The decomposition of calcium carbonate is evident from a large band at ~950%C and a small endothermic ...Maja Milošević, Biljana Đorđević, Mihovil Logar. "Mineralogical analysis of a clay body from Zlakusa, Serbia, used in the manufacture of traditional pottery" in Clay Minerals (2020). https://doi.org/10.1180/clm.2020.20
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Status of the geochemical determination of the solar pp-neutrino flux by LOREX
Pavićević Miodrag, Amthauer Georg, Aničin Ivan, Bosch Franz, Boev Blažo, Brüchle W., Cvetković Vladica, Djurčić Zoran, Henning W.F., Jelenković Rade, Pejović Vladan, Weiss A. (2012)Pavićević Miodrag, Amthauer Georg, Aničin Ivan, Bosch Franz, Boev Blažo, Brüchle W., Cvetković Vladica, Djurčić Zoran, Henning W.F., Jelenković Rade, Pejović Vladan, Weiss A.. "Status of the geochemical determination of the solar pp-neutrino flux by LOREX" in Neutrino 2012, Kyoto, Japan: (2012): 1-15
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A hundred years of Milutin Milanković's climate change theory - geological implications
Dejan Radivojević (2020)Миланковићева теорија циклуса објављена пре сто година је најважнија теорија у наукама које проучавају климу и имала је велики утицај на дисциплине које се баве Земљом. Ипак, његов рад је чекао више од педесет година да би добио потврду. Може се рећи да Миланковићев рад највећи утицај на геологију има у изради астрономске временске скале, подршци хипотези континенталног дрифта и палеоклиматологији. Добри резултати примене астрономске временске скале на неогене седименте иницирали су примену ове методе у мезозојским и у последње ...циклостратиграфија, астономска временска скала, геолошка временска скала, климатске промене, континентални дрифт... geologis- chen vorzeit. verlag von Gebrüder Bornträger, Berlin, 256 pp. LASKAR, j., RoBUTEL, P., joUTEL, F., GASTINEAU, M., CoRREIA, A.C.M., LEvRARD, B. 2004. A longterm numerical solution for the insolation quantities of the Earth. Astron. Astro- phys, 428:261–285. MILANKovIć, M. 1920. Théorie ...
... and at age of 25 (on Decem- ber 12th, 1904) gained a PhD and become the first Serbian Doctor of Technical Science. As a construc- tion engineer, he was one of the pioneers of rein- force concrete application, had six patents (eight in total), and get a glory as well-paid innovator. In 1909 he received ...
... climate changes have been a heated debate both, in the media and scientific cir- cles. People have become aware of its influence on the increased emission of carbon dioxide and tem- perature rise. As a result, many oil and other large manufacturing companies came under the public at- A hundred years of Milutin ...Dejan Radivojević. "A hundred years of Milutin Milanković's climate change theory - geological implications" in Geološki anali Balkanskoga Poluostrva, Univerzitet u Beogradu, Rudarsko geološki fakultet (2020). https://doi.org/10.2298/GABP201125011R
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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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An arid phase in the Internal Dinarides during the early to middle Miocene: Inferences from Mg-clays in the Pranjani Basin (Serbia)
N. Andrić-Tomašević, V. Simić, O. Mandic, D. Životić, M. Suárez, E. García-Romero. "An arid phase in the Internal Dinarides during the early to middle Miocene: Inferences from Mg-clays in the Pranjani Basin (Serbia)" in Palaeogeography, Palaeoclimatology, Palaeoecology, Elsevier BV (2020). https://doi.org/10.1016/j.palaeo.2020.110145
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Geochemical Determination of the Solar pp-Neutrino Flux with LOREX: A Progress Report.
Miodrag K. Pavićević, Walter F. Henning, Fritz Bosch, T. Uesaka, Yurij A. Litvinov, T. Kubo, Vladan Pejović, Georg Amthauer, Ivan Aničin, Blažo Boev, Vladica Cvetković (2017)Miodrag K. Pavićević, Walter F. Henning, Fritz Bosch, T. Uesaka, Yurij A. Litvinov, T. Kubo, Vladan Pejović, Georg Amthauer, Ivan Aničin, Blažo Boev, Vladica Cvetković. "Geochemical Determination of the Solar pp-Neutrino Flux with LOREX: A Progress Report." in IOP Conf. Series: Journal of Physics: Conf. Series 01-Apr no. 888 (2017). https://doi.org/10.1088/1742-6596/888/1/012192
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Status and New Data of the Geochemical Determination of the pp-Neutrino Flux by LOREX
Pavićević Miodrag, Bosch Franz, Amthauer Georg, Aničin Ivan, Boev Blažo, Brüchle W., Cvetković Vladica, Djurčić Zoran, Henning W. F. , Jelenković Rade, Pejović, Vladan, Weiss A. (2012)Pavićević Miodrag, Bosch Franz, Amthauer Georg, Aničin Ivan, Boev Blažo, Brüchle W., Cvetković Vladica, Djurčić Zoran, Henning W. F. , Jelenković Rade, Pejović, Vladan, Weiss A.. "Status and New Data of the Geochemical Determination of the pp-Neutrino Flux by LOREX" in Advances in High Energy Physics 2012, New York:Hindawi publishing corporation (2012): 15. https://doi.org/10.1155/2012/274614
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Regionalno-geološke karakteristike miocenskih sedimenata na prostoru severnog Banata
Dejan N. Radivojević (2014-12-30)Predmet doktorske disertacije predstavljalo je rešavanje strukturno‐stratigrafskihodnosa miocenskih sedimenata na prostoru severnog Banata. U cilju regionalnogsagledavanja, korišćeni su svi raspoloživi geofizički i geološki podaci sa širegistražnog područja, odnosno iz celog Panonskog basena i susednog orogena. Osimklasičnih metoda primenjene su i savremene metode seizmostratigrafije,tektonostratigrafije i riftne sekvencione stratigrafije. Primenjene metode omogućilesu izradu modela progradacije ivice šelfa za ceo Panonski basen, modela uzajamnihveza između basena i geodinamičkog modela jugoistočnog oboda basena.Jezero Panon je većim delom zapunjeno prilivom sedimenata paleo‐Dunavom saseverozapada, odnosno ...Centralni Paratetis, Panonski basen, miocen, jezero Panon,seizmostratigrafija, sekvenciona stratigrafija, paleogeografija, geodinamika... Dacian basin, Romanian Journal of Stratigraphy, v. 76, p. 33–43. Papp, A., 1951. Das Pannon des Wiener Beckens. Mitteilungen der Geologischen Gesellschaft in Wien, 39–41: 99–193. Papp, A., 1960, Das Vorkommen von Miogypsina in Mitteleuropa und dessen Bedeutung für die Tertiärstratigraphie ...
... Patrulius, S. Bordea, A. Stefan, and S. Panin, 1981, The Structure of the Apuseni Mountains: Guide to Excursions B3, 107 pp., Inst. of Geol. and Geophys., Bucharest, Romania. Boettger, O., 1896, Zur Kenntnis der Fauna der mittelmiocänen Schichten von Kostej im Banat. Verhandlungen ...
... pannonische fauna von Budapest. Palaeontographica, 48(4–5), 137–256. Loucks, R. G. and J. F. Sarg 1993. Carbonate Sequence Stratigraphy, Recent Development and Applications. American Association of Petroleum Geologists Memoir 57, 545 pp. Lourens, L. J., 2004, A new geologic time ...Dejan N. Radivojević. "Regionalno-geološke karakteristike miocenskih sedimenata na prostoru severnog Banata" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-12-30)
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Badenske školjke jugoistočnog oboda Panonskkog basena (Centralni Paratetis)
Gordana M. Jovanović (2014-12-05)Rad obuhvata detaljnu studiju badenskih školjaka koje potiču sa terenajugoistočnog oboda Panonskog basena (Centralni Paratetis). Proučavani su lokaliteti naprostorima Srbije (Fruška gora, Golubac, okolina Beograda, Aranđelovca, Koceljeva,Loznica) i severoistočne Bosne (Ugljevik). Pored taksonomske analize i paleontološkihopisa bivalvija, u radu je dat i spisak revidovanih vrsta koje su do sada pronađene usedimentima badenskog kata istraživanog terena. Do sada je ukupno poznato 41familija, 108 rodova i 174 taksona. Identifikovano je 170 bivalvijskih vrsta, međukojima su neke prvi put konstatovane na ovim ...školjke, baden, Panonski basen (Centralni Paratetis), stratigrafija,paleoekologija, paleogeografija, paleobiogeografija... Ostgalizischen miocän. Abhandlungen der K. K. Geologischwen Reischsanstalt. In: Druck, von Fischer i Comp. (eds.). Wien. 7, 6: 43 pp Hilgen, F. J., Lourens, L. J., Van Dam, J. A., Beu, A. G., Boyes, A. F., Cooper, R. A., Krijgsman, W., Ogg, J.G., Piller, W. E., Wilson, D., S. 2012. The Neogene period ...
... 203 Graham P. O. i Holmes, M. A. 2006. The Arcoidea (Mollusca: Bivalvia): a review of the current phenetic-based systematics. Zoological Journal of the Linnean Society, 148: 237-251. Grill, R. 1941. Stratigraphische Untersuchungen mit Hilfe von Mikrofaunen im Wiener Becken und den ...
... Doktorska disertacija 216 Papp A. i Steininger F. 1978: Holostratotypus des Badenien. Holostratotypus: Baden- Sooss (südlich von Wien), Niederösterreich, Österreich. Badener Tegel- Keferstein, 1828 (Unterbaden; M4b; Obere Lagenidenzone). In: Papp A., Cicha I., Seneš J. i Steininger F. (Eds ...Gordana M. Jovanović. "Badenske školjke jugoistočnog oboda Panonskkog basena (Centralni Paratetis)" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-12-05)
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On the possibility to simultaneously determine the long-term average fluxes of solar pp-neutrinos and cosmic ray muons.
Anicin Ivan, Pejović Vladan, Pavićević Miodrag, Amthauer Georg, Boev Blažo, Bosch Fridrih, Brüchle W, Djurčić Zoran, Henning W. F., Faestermann T., Jelenković Rade, Niedermann S, Weiss A. (2011)Anicin Ivan, Pejović Vladan, Pavićević Miodrag, Amthauer Georg, Boev Blažo, Bosch Fridrih, Brüchle W, Djurčić Zoran, Henning W. F., Faestermann T., Jelenković Rade, Niedermann S, Weiss A.. "On the possibility to simultaneously determine the long-term average fluxes of solar pp-neutrinos and cosmic ray muons." in Modern Physics Letters A (MPLA) 26 no. 17, Singapore:World Scientific (2011): 1267-1271. https://doi.org/10.1142/S0217732311035626
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Threshold-induced correlations in the Random Field Ising Model
... goa 8 o rs 10°54 = vam -16 | a T= Vv 29 10 a A S ace 103 & vy 10° T T 7 T T : : : 10! 10? 10° 10" 10° 10° 10! 10? 108 T. w Von Figure 2. Threshold induced correlations in waiting times distributions. In panel (a) we show the distributions D(T,,) of the waiting time T,, for a wide range of threshold levels ...
... : . Von =600 a Jj 0 ot . — 1.74975x10° 1.74976x10" ' L.7A9T7x109 7 7 7 T T r r 1.7493x10 1749910 1.7505x10 10! 102 103 104 C 18{ d 18 ule R=2.25 1.754 i i = 1.64 @ 1.7 iS . 1.704 °. oe 10°} 15] ®eeeccee0 y ac La ° 1.6 0 1000 1.655 & °. 15 a 1.604 e 0.0 O01 02 03 A Vy=20 r vy Vin=50 1554 = R=2.95 a, Vi ...
... Viyy=25 > 1074 © = 1-1024, R=2.30, Vi,=50 = © = 1-1024, R=2.30, V,,—50 a A 12046, R=2.25, Vj,=102 a A 12046, R=2.25, Vy.=102 om ¥ L=4087, R=2.22, Vy,=208 = 1074 V L-4087, R=2.22, Vy,=208 ~ ~ a¥ ~ an e a <a ™ wa ~a04 a , e Q Ag A ? @ 7 e | > » ee NS YY g 3 3 = va to! 102108 . va . sr . S -8 ini T 10 ...Sanja Janićević, Dragutin Jovković, Lasse Laurson, Đorđe Spasojević. "Threshold-induced correlations in the Random Field Ising Model" in Scientific Reports, Springer Science and Business Media LLC (2018). https://doi.org/10.1038/s41598-018-20759-6
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Hidrogeohemija prirodnih radioaktivnih elemenata u podzemnim vodama Srbije
Marina D. Ćuk (2018-02-23)Osnovni cilj doktorske disertacije predstavljao je definisanje prirodnih koncentracija (engl. background values) U, Th, i K u podzemnim vodama, i definisanje hidrogeohemijskih uslova koji utiču na distribuciju navedenih elemenata u podzemnim vodama...prirodni radioaktivni elementi, podzemna voda, geohemijske sredine, hidrogeohemijski uslovi, neparametarska statistička analiza, logistički model, hidrohemijsko modeliranje... contaminants in English soil. Sci. Total Environ. 454-455: 604 – 618. 5. Antić M, Peytcheva I, von Quadt A, Kounov A, Trivić B, Serafimovski T, Tasev G, Gerdjikov I, Wetzel A. 2015. Pre-Alpine evolution of a segment of the North- Gondwanan margin: Geochronological and geochemical evidence from the central ...
... Peytcheva I, Macheva L, von Quadt A, Zidarov N. 2015. Gondwana-derived units in Ograzhden and Belasitsa Mountains, Serbo-Macedonian Massif (SW Bulgaria): combined geochemical, petrological and U-Pb zircon-xenotime age constraints. Geologica Balcanica 44: 51 – 84. 130. Pili A, Ricard Y, Lardeaux JM ...
... materije predstavlja jedan od najvažnijih faktora za postizanje ravnotežnih uslova: aA + bB ↔ cC +dD K = {C}c ∙{D}d{A}a∙{B}b Gde su a, b, c, d – broj molova reaktanata A i B, i produkata C i D Odstupanje od ravnoteže se iskazuje proizvodom jonske aktivnosti (Q): Q = (aD∙aC)/(aA∙aB) ≠ K ...Marina D. Ćuk. "Hidrogeohemija prirodnih radioaktivnih elemenata u podzemnim vodama Srbije" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2018-02-23)
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Simultaneous determination of long-term average fluxes of solar pp-neutrinos and cosmic ray muons. Astrophysics and Space Sciences Transactions (ASTRA).
Aničin Ivan, Pavićević Miodrag, Amthauer Georg, Boev Blažo, Bosch Franz, Bruchle W., Đurčić Zoran, Faestermann, T., Henning, W.F., Jelenković Rade, Niedermann S., Pejović Vladan, Vermeesch P., Weiss A. (2010)Aničin Ivan, Pavićević Miodrag, Amthauer Georg, Boev Blažo, Bosch Franz, Bruchle W., Đurčić Zoran, Faestermann, T., Henning, W.F., Jelenković Rade, Niedermann S., Pejović Vladan, Vermeesch P., Weiss A.. "Simultaneous determination of long-term average fluxes of solar pp-neutrinos and cosmic ray muons. Astrophysics and Space Sciences Transactions (ASTRA)." in ASTRA. Special Issue: ECRS 2010 (2010): 111
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Contribution to the geotechnical classification of municipal waste landfills in Serbia
Management, Monitoring, Policy and Law, Nature and Landscape Conservation, Geochemistry and Petrology, Waste Management and Disposal,Geotechnical Engineering and Engineering Geology,Water Science and Technology,Environmental Chemistry,Environmental EngineeringDragoslav Rakić, Irena Basarić, Laslo Čaki, Slobodan Ćorić. "Contribution to the geotechnical classification of municipal waste landfills in Serbia" in Environmental Geotechnics, Thomas Telford Ltd. (2018). https://doi.org/10.1680/jenge.18.00028
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Simultaneous determination of long-term average fluxes of CR muons and solar pp-neutrinos
Aničin Ivan, Pavićević Miodrag, Amthauer Georg, Boev Blažo, Bosch F., Brüchle W, Djurčić Željan, Faestermann T., Henning W. F., Jelenković Rade, Niedermann S., Pejović Vladan, Vermeesch P., Weiss A. (2010)Aničin Ivan, Pavićević Miodrag, Amthauer Georg, Boev Blažo, Bosch F., Brüchle W, Djurčić Željan, Faestermann T., Henning W. F., Jelenković Rade, Niedermann S., Pejović Vladan, Vermeesch P., Weiss A.. "Simultaneous determination of long-term average fluxes of CR muons and solar pp-neutrinos" in 22nd ECRS - European Cosmic Ray Symposium ECRS 2010, Turku, Finland: (2010)
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Atmospheric exposure vs burying: influences on damage intensity of built-in kersantite in the monument of the Small Staircase (Belgrade, Serbia)
Proučavan je efekat „zatrpanog kamena“ na intenzitet procesa degradacije prisutnih na kersantitu koji je ugrađen u spomenik Malo stepenište. Istraživanja su vršena na uzorcima stene iz kamenoloma i na oštećenim kamenim blokovima ugrađenim u spomenik. Dok su neki delovi stepeništa bili pod zemljom 90 godina, većina kamenih elemenata je bila izložena različitim uslovima sredine i antropogenim uticajima. Urađeno je detaljno mapiranje trenutnog stanja spomenika kako bi se istražio uticaj “zatrpavanja” i kompleksne geometrije spomenika na tip propadanja i variranje ...Nevenka Novaković, Predrag Dabić, Vesna Matović. "Atmospheric exposure vs burying: influences on damage intensity of built-in kersantite in the monument of the Small Staircase (Belgrade, Serbia)" in Environmental Earth Sciences, Springer Science and Business Media LLC (2023). https://doi.org/10.1007/s12665-023-10794-6
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The Dinaride Ophiolite Belt – derived olistostrome melange at the northen slope of Moračka Kapa (Montenegro): evidence of the emplacement of the southeast Bosnian-Durmitor terrane
Karamata Stevan, Dimitrijević Mara, Dimitrijević Milorad, Ercegovac Marko, Kalezić M., Milovanović Dragan, Mirković M., Olujić Jovan, Popvić A., Pajović M., Radosinović M., Stijović V., Sudar Milan, Cvetković Vladica, Šarić Kristina, Zakaridze G. (2010)Karamata Stevan, Dimitrijević Mara, Dimitrijević Milorad, Ercegovac Marko, Kalezić M., Milovanović Dragan, Mirković M., Olujić Jovan, Popvić A., Pajović M., Radosinović M., Stijović V., Sudar Milan, Cvetković Vladica, Šarić Kristina, Zakaridze G.. "The Dinaride Ophiolite Belt – derived olistostrome melange at the northen slope of Moračka Kapa (Montenegro): evidence of the emplacement of the southeast Bosnian-Durmitor terrane" in Bulletin Classe des sciences mathématiques et natturalles - Sciences natturalles 140 no. 46, Beograd:Srpska akademija nauka i umetnosti (2010): 29-40
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Electronic Dictionaries - from File System to lemon Based Lexical Database
In this paper we discuss some well-known morphological descriptions used in various projects and applications (most notably MULTEXT-East and Unitex) and illustrate the encountered problems on Serbian. We have spotted four groups of problems: the lack of a value for an existing category, the lack of a category, the interdependence of values and categories lacking some description, and the lack of a support for some types of categories. At the same time, various descriptions often describe exactly the same ...... closed set (e.g. +CC2=RS is a two character coun- try code marker assigned, for instance, to geopolitical names), or to an open set (e.g. +Val=Vaughn is as- signed to a surname Von, Serbian transcription of the English surname Vaughn). Semantically, markers can be of various types: • semantic/ontology ...
... ). This rule is in a group with five other rules: VAR=ArisatiIrati N N that generates a noun variation, VAR=ArisatiIrati A A that gen- erates an adjective variation and three others with inverse markers VAR=IratiArisati V V, VAR=IratiArisati N N, and VAR=IratiArisati A A. A POS is an important part ...
... representing a unit of analysis of the lexicon, which encompasses a set of inflected forms that are grammatically related, and a set of base meanings that are associated with all of these forms (Figure 2). A lexical entry is a (single) word, multi-word expression, acronym or affix with a single pa ...Ranka Stanković, Cvetana Krstev, Biljana Lazić, Mihailo Škorić. "Electronic Dictionaries - from File System to lemon Based Lexical Database" in Proceedings of the 11th International Conference on Language Resources and Evaluation - W23 6th Workshop on Linked Data in Linguistics : Towards Linguistic Data Science (LDL-2018), LREC 2018, Miyazaki, Japan, May 7-12, 2018, European Language Resources Association (ELRA) (2018)
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Damage quantification of built stone on Dark Gate (Belgrade, Serbia): sample of damage index application for decay rate evaluation
The Dark Gate is the monument of culture, part of the cultural and historical complex of the Belgrade Fortress. It is constructed of limestone blocks that after 270 years of exposure to environmental conditions and different anthropogenic influences show wide ranges of decay forms. During 2007, detail registration of all built limestone microfacies and weathering forms was done using tools of monument mapping. A correlation scheme ‘‘intensity– damage category’’ was made according to the type, intensity, and distribution of ...... Interpreting spatial complexity of decay features on a sandstone wall: St. Matthew's church, belfast. In: Smith BJ, Turkington AV (eds) Controls and causes of stone decay. Donhead, London, pp 149-166 VDI 3798 (1998) Untersuchung und Behandlung von immi- ssionsgeschšidigten Werkstoffen, insbesondere ...
... 6193 Massa S, Naldini S, Rorro A (1991) A system of classification of the decay of stone monuments. In: Baer NS, Sabbioni C, Sors A (eds) Science, technology and european cultural heritage. Butterworth-Heinemann, Oxford, pp 859-862 McCabe S, Smith B J, Warke P A (2007) An holistic approach to ...
... diagnosis is a first and crucial step in order to adequately respond to the conservation issues. It is essen- tial that the complex case history be established trough the @ Springer 6182 holistic approach that provides assessment of the building as a whole and treats it as a product rather ...Maja Franković, Nevenka Novaković, Vesna Matović. "Damage quantification of built stone on Dark Gate (Belgrade, Serbia): sample of damage index application for decay rate evaluation" in Environmental Earth Sciences, Springer Science and Business Media LLC (2015). https://doi.org/10.1007/s12665-014-3843-z
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Синтеза и карактеризација керамике на бази сфена
Jelena R. Pantić (2015-07-10)Механохемијска активација стехиометријске смеше реактаната TiO2, SiO2 и CaCO3 показала се као веома успешна и једноставна метода за добијање сфена (CaTiSiO5). На основу мерења релативних густина свих синтерованих узорака установљено је да максималну густину од 93,9 % имају узорци који су активирани 30 минута и синтеровани на 1200 °С. Микроструктурном анализом, тј. анализом слика синтерованих узорака активираних 30 минута, које су добијене скенирајућом електронском микроскопијом, опажа се бимодална расподела величине зрна, са просечном величином од 3 μm, односно 5 ...сфен, механохемија, Ритвелдова метода, оптичка спектроскопија, микроструктурна анализа, фазна трансфоpмација, чврсти раствори... .com/. Schrader, R. und Hoffmann B. (1969) Über die Mechanische Aktivierung von Calciumcarbonat. Z Аnorg Аllg Chem 369: 41-47. Taylor M. and Brown G.E. (1976) High-temperature structural study of the P21/a ↔ A2/a phase transition in synthetic titanite, CaTiSiO5. Am Mineral 61: 435-447. Тодоровић ...
... трансфомацији из P21/a у A2/a просторну групу постају уже. 4000 3500 3000 2500 2000 1500 1000 500 0 10 20 30 40 50 60 70 80 90 100 435 473 562 633 705 675862 T ( % ) cm-1) 373 A2/a P2 1 /a Слика 4.3.5.1. Инфрацрвени спектри а) сфена30 (P21/a) и б) сфена5 (A2/a) након синтеровања ...
... анатаса у рутил. 20 40 60 ° a cc cc c c c c c cc ccr r r a a 120 min 60 min 30 min 15 min c - CaCO 3 a, r - TiO 2 a r c Слика 4.1.4.1. Дијаграми механички активираних прахова сфен15, сфен30, сфен60 и сфен120. Симболи: с - СаСО3, док a и r представљају полиморфне модификације ...Jelena R. Pantić. "Синтеза и карактеризација керамике на бази сфена" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-07-10)