Претрага
435 items
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Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites
Marija Šuljagić, Aleksandar Kremenović, Ivan Petronijević, Adis Džunuzović, Miljana Mirković, Vladimir Pavlović, Ljubica Anđelković (2023)To investigate the effect of synthesis procedure and sintering temperature on the functional properties of perovskite/spinel ceramics, BaTiO3/CoFe2O4 composites were prepared by thermal decomposition, coprecipitation, and microemulsion method, and sintered at 1150°C and 1300°C. The phase composition and morphology of as-prepared powders as well as sintered ceramics were thoroughly examined by X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS). The dielectric and ferroelectric measurements were performed in detail. Generally, the ...Marija Šuljagić, Aleksandar Kremenović, Ivan Petronijević, Adis Džunuzović, Miljana Mirković, Vladimir Pavlović, Ljubica Anđelković. "Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites" in Science of Sintering (2023). https://doi.org/10.2298/SOS220512013S
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Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering
Josip Išek, Lazar Kaluđerović, Nikola Vuković, Maja Milošević, Ivana Vukašinović, Zorica Tomić (2020)... was subjected only to chem- ical characterization using scanning electron microscopy with energy-dispersive spectrometry (SEM-EDS). Scanning electron microscopy SEM-EDS analysis was performed using a JEOL JSM-11300 SEM coupled with an Oxford Instruments XMax 50 mm? silicon drift detector ener ...
... analysis, in accordance with the low levels of impurities obtained using SEM-EDS and ICP-OES elemental ana- lyses. Specifically, in the PGIP sample, Al, Si and P calculated as oxides by stoichiometry amount to 1.02 wt.% in SEM-EDS ana- lysis. In addition, 10 trace elements in ICP-OES 5analysis (Table ...
... Na, Mg, Al, K, Ti, Fe, Sr and Ba in raw phosphogypsum (total 0.24 wt.% as oxides). The SEM-EDS, Josip |. Išek et al. Table 2. Chemical compositions (wt.%) of the samples investigated, obtained by SEM-EDS analysis. Elements PG1 PG2 PGIR PG1P o 47.07 46.99 51.65 46.69 F BDL BDL 0.56 BDL Na ...Josip Išek, Lazar Kaluđerović, Nikola Vuković, Maja Milošević, Ivana Vukašinović, Zorica Tomić. "Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering" in Clay Minerals, Cambridge University press (2020). https://doi.org/10.1180/clm.2020.11
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BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties
Marija Šuljagić, Ivan Petronijević, Miljana M. Mirković, Aleksandar Kremenović, Adis Džunuzović, Vladimir B. Pavlović, Aleksandra Kalezić-Glišović, Ljubica Andjelković (2023)To investigate the influence of spinel structure and sintering temperature on the functional properties of BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1), NiFe2O4, ZnFe2O4, and Ni0.5Zn0.5Fe2O4 were in situ prepared by thermal decomposition onto BaTiO3 surface from acetylacetonate precursors. As-prepared powders were additionally sintered at 1150 °C and 1300 °C. X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS) were used for the detailed examination of phase composition and morphology. The magnetic, dielectric, and ...ferroelectric, dielectric properties, magnetic properties, titanate/ferrite composites, phase composition... n of ZnFe»Oxu over the BaTiOy surface. Tnorganics 2023, 11, 51 5of19 EDS Layered image 1 BaTiOx/NiFe;O, EDS Layered image ! BaTiOx/ZnFe;O, FDS layeredimage 1 — 75 BaTiO3/Nio.5Zn0·5FeZO4 Figure 2. SEM and EDS layered imagjes of non-sintered BaTiOys /NiFe>»Ou, BaTiOys /ZnFe>Ou, and ...
... (AM/Mo = 13.2%). — _ 1 SO0kV X4,50 · 5Mm A BaTi03/NiFe204 EDS Layered Image 1 % /_ d- d- J 30kV. X4,500 _ SHm. . BaTiOx/ZnFe,O, EDS Layeredimage | 30kV _ X4,500 __5um BalTlO3/Ni0·5Zn0·5Fe204 Figure 4. SEM and EDS layered images of BaTiO,š/NiFe>»Oa, BaTiOs/ZnFe»Oa, and BaTiOy / Nio ...
... ferrite particles formed agglomerates due to the size-driven surface activity [66,67]. The EDS maps of these samples confirmed the non-uniform distribution of barium-titanate and ferrite phases. The EDS layered images sug;geested that the best ferrite distribution over the titanate surface was ...Marija Šuljagić, Ivan Petronijević, Miljana M. Mirković, Aleksandar Kremenović, Adis Džunuzović, Vladimir B. Pavlović, Aleksandra Kalezić-Glišović, Ljubica Andjelković. "BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties" in Inorganics, MDPI AG (2023). https://doi.org/10.3390/inorganics11020051
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Single and multi-phase inclusions in garnets from the Lešnica alluvion in the Internal Dinarides, Serbia
Maja Milošević, Bojan Kostić (2021)... wereexamined optically by petrographic methods followed by SEM-EDS method, applied for thechemical analyses of the individual inclusion, and LA-ICP-MS applied to determine distribution andcontent of trace elements in the host garnet. Results from SEM-EDS method show that garnets are of the spessartine-almandine ...Maja Milošević, Bojan Kostić. "Single and multi-phase inclusions in garnets from the Lešnica alluvion in the Internal Dinarides, Serbia" in EGU Assembly 2021, Copernicus GmbH (2021). https://doi.org/10.5194/egusphere-egu21-2423
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Quantitative analysis of syllable properties in Croatian, Serbian, Russian, and Ukrainian
Biljana Rujević, Marija Kaplar, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Jan Mačutek (2021)Biljana Rujević, Marija Kaplar, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Jan Mačutek. "Quantitative analysis of syllable properties in Croatian, Serbian, Russian, and Ukrainian" in Language and Text: Data, models, information and applications, John Benjamins Publishing Company (2021). https://doi.org/10.1075/cilt.356.04ruj
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Bilingual lexical extraction based on word alignment for improving corpus search
Jelena Andonovski, Branislava Šandrih, Olivera Kitanović. "Bilingual lexical extraction based on word alignment for improving corpus search" in The Electronic Library, Emerald (2019). https://doi.org/10.1108/EL-03-2019-0056
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Digital Library From A Domain Of Criminalistics As A Foundation For A Forensic Text Analysis
U ovom radu predstavljen je model koji omogućava prikupljanje, pripremu, opis metapodataka, upravljanje i eksploataciju, uključujući pretragu punog teksta dokumenata iz domena kriminalistike napisanih na srpskom jeziku. Predloženi pristup primenjuje se na veb portalu koji sakuplja različite tekstove nastale iz časopisa Akademije za kriminalistiku i policijske studije, Krivičnog zakona Srbije, konferencija „Tara“ i „Reiss“, kao i iz nekih doktorskih disertacija vezanih za ovu oblast istraživanje. Nakon obrade teksta, korpus koji sadrži preko 5500 stranica običnog teksta, kreiran je i ...... 2003, Thessaloniki, Greece, eds, S. Piperidis and V. Karkaletsis, pp. 97- 104, 2003. 5. Miljana Mladenović, Jelena Mitrović, Cvetana Krstev, “Developing and Maintaining a WordNet: Procedures and Tools”, In The Proceedings of Seventh Global WordNet Conference 2014, eds. Heili Orav, Christiane h ...
... Krstev, Duško Vitas, “Corpus and Lexicon - Mutual Incompletness ”, in Proceedings of the Corpus Linguistics Conference, 14-17 July 2005, Birmingham, eds. Pernilla Danielsson and Martijn Wagenmakers, ISSN 1747-9398, http://www.corpus.bham.ac.uk/PCLC/, 2005 10 Cvetana Krstev, Ranka Stanković, Duško Vitas ...
... Mitrović, Cvetana Krstev, “Developing and Maintaining a WordNet: Procedures and Tools”, In The Proceedings of Seventh Global WordNet Conference 2014, eds. Heili Orav, Christiane Fellbaume, Piek Vossan, University of Tartu, Tartu, Estonia, January 25-29, 2014, pp. 55-62, 2014, ISBN 978–9949–32–492–7 ...Dalibor Vorkapić, Aleksandra Tomašević, Miljana Mladenović, Ranka Stanković, Nikola Vulović. "Digital Library From A Domain Of Criminalistics As A Foundation For A Forensic Text Analysis" in International Scientific Conference “Archibald Reiss Days” Thematic Conference Proceedings Of International Significance, Belgrade, 7-9 November 2017, Academy Of Criminalistic And Police Studies Belgrade (2017)
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Model inteligentnog sistema adaptivnog upravljanja procesom prerade rude
Ivana M. Jovanović (2016-01-13)U oblasti procesa prerade rude, flotacijska koncentracija predstavlja jednu od najznačajnijih i najčešće primenjivanih metoda separacije korisnih od nekorisnih minerala. Samim tim, veoma je važno osigurati uspešan rad flotacijskog postrojenja kroz dostizanje zadovoljavajućih tehno-ekonomskih pokazatelja. Cilj upravljanja procesom flotacijske koncentracije je upravo optimizacija kvaliteta i iskorišćenja korisne komponente u koncentratu uz maksimizaciju profita. Shodno tome, istraživanja na polju modelovanja i upravljanja ovim procesom zauzimaju značajno mesto u praksi kontolnog inženjenringa.Teorijska istraživanja u okviru doktorske disertacije obuhvatila su analizu položaja ...flotacijska koncentracija, modelovanje, upravljanje, inteligentni sistem, soft kompjuting, fazi logika, veštačke neuronske mreže... process Ivana M. Jovanović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Model inteligentnog sistema adaptivnog upravljanja procesom prerade rude;Model of intelligent adaptive control system for ore treatment process | Ivana M. Jovanović | Универзитет у Београду ...
... Ivana M. Jovanović MODEL INTELIGENTNOG SISTEMA ADAPTIVNOG UPRAVLJANJA PROCESOM PRERADE RUDE doktorska disertacija Beograd, 2015 UNIVERSITY OF BELGRADE FACULTY OF MINING AND GEOLOGY Ivana M. Jovanović MODEL OF INTELLIGENT ...
... veštačke neuronske mreže. I. Jovanović, MODEL INTELIGENTNOG SISTEMA ADAPTIVNOG UPRAVLJANJA PROCESOM PRERADE RUDE UNIVERZITET U BEOGRADU, RUDARSKO-GEOLOŠKI FAKULTET 178 Slika 93. Elementi razvoja VNM3 modela. I. Jovanović, MODEL INTELIGENTNOG SISTEMA ADAPTIVNOG ...Ivana M. Jovanović. "Model inteligentnog sistema adaptivnog upravljanja procesom prerade rude" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-01-13)
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Sinteza i strukturna karakterizacija novih cezijumskih i kalijumskih silikata sa elementima retkih zemalja
Predrag Z. Dabić (2022)Predmet i ciljevi naučnog istraživanja ove doktorske disertacije su sinteza i strukturna karakterizacija novih cezijumskih i kalijumskih silikata sa elementima retkih zemalja. Istraživanja su izvedena u okviru sistema SiO2–REE2O3–XF, gde REE predstavlja trovalentni katjon elementa retkih zemalja (Sc, Y, Sm, Eu, Gd, Ho, Er, Tm, Yb, Lu), dok X predstavlja jednovalentni katjon alkalnih metala (K, Cs). Rad na disertaciji bio je fokusiran na sintezu monokristala, određivanje kristalnih struktura, kao i na kristalografsko i kristalohemijsko ispitivanje sintetisanih monokristala. Monokristali su sintetisani ...alkalni silikati elemenata retkih zemalja, kristalna struktura, sinteza metodom fluksa, rendgenska difrakcija na monokristalu, elementi retkih zemaljaPredrag Z. Dabić. Sinteza i strukturna karakterizacija novih cezijumskih i kalijumskih silikata sa elementima retkih zemalja, Beograd : P. Dabić, 2022
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Managing mining project documentation using human language technology
Purpose: This paper aims to develop a system, which would enable efficient management and exploitation of documentation in electronic form, related to mining projects, with information retrieval and information extraction (IE) features, using various language resources and natural language processing. Design/methodology/approach: The system is designed to integrate textual, lexical, semantic and terminological resources, enabling advanced document search and extraction of information. These resources are integrated with a set of Web services and applications, for different user profiles and use-cases. Findings: The ...Digital libraries, Information retrieval, Data mining, Human language technologies, Project documentationAleksandra Tomašević, Ranka Stanković, Miloš Utvić, Ivan Obradović, Božo Kolonja . "Managing mining project documentation using human language technology" in The Electronic Library (2018). https://doi.org/10.1108/EL-11-2017-0239
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Sinteza i karakterizacija nanoprahova u CeO2-Bi2O3 sistemu
Marija D. Prekajski (2014-04-04)Nanoprahovi kristalnih faza iz serije čvrstih rastvora u pseudo-binarnom sistemuCeO2-Bi2O3 sintetisani su primenom jednostavne i ekonomične samopropagirajućemetode na sobnoj temperaturi korišćenjem nitrata metala i natrijum-hidroksida kaopolaznih supstanci. Osim krajnjih članova niza, CeO2 i niskotemperaturne polimorfnemodifikacije α-Bi2O3, sintetisani su i čvrsti rastvori nominalnog sastava Ce1-xBixO2-δ,gde je x = 0,1; 0,2; 0,3; 0,4; 0,5; 0,6; 0,7; 0,8; 0,9. Rezultati proučavanja metodomrendgenske difraktometrije na polikristalnom materijalu i ramanske spektroskopskeanalize pokazali su da su sintetisani prahovi sa nižim sadržajem bizmuta (x = 0,1 ...nanostrukturni materijali, čvrsti rastvori, CeO2, Bi2O3, rendgenskadifraktometrija praha, Ritveldova metoda, mikrostrukrurna analizaMarija D. Prekajski. "Sinteza i karakterizacija nanoprahova u CeO2-Bi2O3 sistemu" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-04-04)
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Using Query Expansion for Cross-Lingual Mathematical Terminology Extraction
Velislava Stoykova, Ranka Stanković (2018)Velislava Stoykova, Ranka Stanković. "Using Query Expansion for Cross-Lingual Mathematical Terminology Extraction" in Advances in Intelligent Systems and Computing, Springer International Publishing (2018). https://doi.org/10.1007/978-3-319-91189-2_16
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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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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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Gornjopleistocenski glodari (Rodentia) iz pećine Baranica kod Knjaževca (istočna Srbija)
Katarina V. Jovanović (2005)Katarina V. Jovanović. Gornjopleistocenski glodari (Rodentia) iz pećine Baranica kod Knjaževca (istočna Srbija), Beograd:Rudarsko-geološki fakultet, 2005
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Zavisnost sadržaja gvožđa, mangana, nikla, hroma i kobalta u olivinu od fizičko-hemijskih uslova postanka ultramafita i meteorita
Larisa Kolomajceva-Jovanović (1985)Larisa Kolomajceva-Jovanović. Zavisnost sadržaja gvožđa, mangana, nikla, hroma i kobalta u olivinu od fizičko-hemijskih uslova postanka ultramafita i meteorita, Beograd:Rudarsko Geološki Fakultet, 1985
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Tercijarne bazaltoidne stene u Srbiji
Milivoje M. Jovanović (2003)Milivoje M. Jovanović. Tercijarne bazaltoidne stene u Srbiji, Beograd:Rudarsko Geološki Fakultet, 2003
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Izučavanje procesa okrupnjavanja mlevenog krečnjakak radi primene u poljoprivredi
Vladimir D. JOVANOVIĆ (2016)Vladimir D. JOVANOVIĆ. Izučavanje procesa okrupnjavanja mlevenog krečnjakak radi primene u poljoprivredi, Beograd:Rudarsko Geološki Fakultet, 2016
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Fuzzy stohastički model izbora sistema otvaranja podzemnog rudnika
Saša M. Jovanović (2016)otkopavanje, otvaranje, mreže i grafovi, fuzzy skupovi, stohastički procesi, indeks konveksnosti, sistemi podrške odlučivannjuSaša M. Jovanović. Fuzzy stohastički model izbora sistema otvaranja podzemnog rudnika, Beograd:Rudarsko Geološki Fakultet, 2016
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Model inteligentnog sistema adaptivnog upravljanja procesom prerade rude
Ivana M. Jovanović (2016)adaptivno upravljanje, ruda, prerada rude, flotacijska koncentracija, priprema mineralnih sirovina, modelovanjeIvana M. Jovanović. Model inteligentnog sistema adaptivnog upravljanja procesom prerade rude, Beograd:Rudarsko Geološki Fakultet, 2016