Претрага
650 items
-
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... Precision Multiferroic Test System with High Voltage Interface (Radiant Technologies, Inc., Albuquerque, New Mexico). 4. Conclusions The aim of this study was the investigation of the effect of phase composition on the magnetic, dielectric, and ferroelectric properties of BaTiOx/Ni„Zni _xFe>Oa (x = 0 ...
... 2022- 14/200132 and 451-03-68/2022-14/200116) for financial support. Data Availability Statement: No new data were created or analyzed in this study. Data sharing, is not applicable to this article. Conflicts of Interest: The authors declare no conflict of interest. References 1. · Jana,B ...
... 7, 2074–-2087. [CrossRef] esus, J.C.D.; Gonzalez, 1.; Quevedo, A.; Puerta, T. Thermal decomposition of nickel acetate tetrahydrate: An integrated study by TGA, QMS and XPS techniques. J. Mol. Catal. A Chem. 2005, 228, 283-291. [CrossRet] 'umar, N.; Kachroo, P.L.; Kant, R. Thermal decomposition of ...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
-
Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes
... reduce the quality of the immediate environment, as the distance areas throughout water and air pollution propagation. Additional motivation for this study lies in the fact that large mining and energy complexes are particularly interesting because they are located in the immediate vicinity or large rivers ...
... for the preservation of environmental quality is an effective environmental management system (EMS) in mining and energy complexes. The aim of this study is to promote and elaborate the possibility for improving the mining and energy complex environmental protection/management system by applying the basic ...
... [15–17]. Preparations have started for the construction of facilities for wastewater treatment. The Investment-technical documentation and Feasibility Study is being prepared, with the preliminary design for construction of wastewater treatment plant “Kostolac B”, for blocks B1, B2, and future block B3 with ...Jelena Malenović Nikolić, Dejan Vasović , Ivana Filipović , Stevan Mušicki, Ivica Ristović . "Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes" in Energies (2016). https://doi.org/https://doi.org/10.3390/en9121071
-
Sorpcija herbicida na neorganski i organski modifikovanom prirodnom montmorionitu iz Bogovine
Lazar M. Kaluđerović (2018-01-17)fikasnost prilikom sorpcije S-metolahlora i klomazona od strane neorganskih iorganski modifikovanih montmorionita sa lokaliteta Bogovina odreĎena je metodombach adsorpcije. Uzorci montmorionita su tretirani prvo rastvorom NaCl a zatim irazličitim koncentracijama organskih kompleksa. Adsorpcione izoterme su dobijenetretiranjem uzoraka različitim koncentracijama herbicida. Detaljna mineraloškakarakterizacija uzoraka uraĎena je metodom rendgenske difrakcije. Rezultati interakcijemontmorionita sa organskim kompleksima i herbicidima dobijeni su primenomrendgenskih, optičkih, termičkih i spektroskopskih metoda.Na osnovu rezultata rendgenskih ispitivanja uzoraka, utvrĎeno je prisustvoorganskih kompleksa i herbicida u meĎuslojnom prostoru montmorionita.Montmorioniti modifikovani ...adsorpcija, montmorionit, heksadeciltrimetilamonijum bromid,feniltrimetilamonijum hlorid, S-metolahlor, klomazon... ol on HDTMA organoclays—the XRD and TG study. Journal of Colloid and Interface Science, 307: 50–55. Zhou Q., He H., Frost R. L., Xi Y. 2007b. Adsorption of p-Nitrophenol on Mono-, Di-, and Trialkyl Surfactant-Intercalated Organoclays: A Comparative Study. The Journal of Physical Chemistry C, ...
... Soil and Tillage Research, 128: 97–103. Allaway W. H. 1949. Differential thermal analysis of clays treated with organic cations as an aid in the study of soil colloids. Soil Science Society of America, Proceedings, 13: 183–188. Anderson S. J., Sposito G. 1991. Cesium adsorption method for measuring ...
... 2009.The behavior of clomazone in the soil environment. Pest Management Science, 65: 711–716. He H. P., Ray F. L., Zhu J. X., 2004. Infrared study of HDTMA+ intercalated montmorillonite. Spectrochimica Acta Part A- Molecular and Biomolecular Spectroscopy, 60(12): 2853–2859. He H., Ding Z ...Lazar M. Kaluđerović. "Sorpcija herbicida na neorganski i organski modifikovanom prirodnom montmorionitu iz Bogovine" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2018-01-17)
-
Nonequilibrium athermal random-field Ising model on hexagonal lattices
Svetislav Mijatović, Dragutin Jovković, Đorđe Spasojević. "Nonequilibrium athermal random-field Ising model on hexagonal lattices" in Physical Review E, American Physical Society (APS) (2021). https://doi.org/10.1103/PhysRevE.103.032147
-
Open Educational Resources in Serbia
... s for students with disabilities, attended by 1993 students. As for the tertiary education, 27,801 students were enrolled in the first year of study at 7 accredited public universities, 6,728 at accredited private universities, 10,239 at public high schools and 1,582 at private high schools ...
... activities. Assistant professor from 2015. Author or coauthor of more than 50 research paper. Reviewer for many scientific journals. Project and study programs reviewer. Member of partner university for Tempus project 544482-TEMPUS-1-2013-1-IT-TEMPUS-JPHES. Participant in four Erasmus mobilities ...
... of distance learning in higher education institutions in the Western Balkans and responsible for the development of accreditation standards for study programs for distance learning. Also, she coordinated WUS MSDP project “MSc in eLearning: e-moderating Module” at the Faculty of Technical Sciences ...Ivan Obradović, Ranka Stanković, Marija Blagojević, Danijela Milošević. "Open Educational Resources in Serbia" in Current State of Open Educational Resources in the “Belt and Road” Countries, Springer Singapore (2020). https://doi.org/10.1007/978-981-15-3040-1_10
-
Influence of mono- and two-component organic modifiers on determination of lipophilicity of tetradentate Schiff bases
Ispitivani su uticaji primene mono- i dvokomponentnih organskih modifikatora na određivanje lipofilnosti 12 tetradentatnih Šifovih baza metodom reverzno-fazne tankoslojne hromatografije. Osnovni cilj je da se proceni tip interakcije između posmatranih jedinjenja i komponenti primenjenih hromatografskih sistema i uspostavi neki obrazac ponašanja kako bi se lakše izabrala kombinacija organskih modifikatora koji će simulirati interakciju u biološkim sistemima na osnovu činjenica da iste osnovne intermolekularne interakcije su odgovorne za ponašanje supstanci i u biološkom i u hromatografskom sistemu. Primenjeni organski modifikator ...Nikola Stevanović, Aleksandar Mijatović, Aleksandar Lolić, Mario Zlatović, Rada Baošić. "Influence of mono- and two-component organic modifiers on determination of lipophilicity of tetradentate Schiff bases" in Chemical Papers, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s11696-021-01884-5
-
Definition of Circulation Conditions and Groundwater Genesis of the Complex Krupaja Hydrogeological Karst System (Eastern Serbia)
Management, Monitoring, Policy and Law,Renewable Energy, Sustainability and the Environment, Geography, Planning and Development, Building and Construction... Krupaja system represents one of the most complex karst systems within the Beljanica karst massif, and as such, it is of greatimportance for the study of karst ground- water genesis, the depth of cold, subthermal, and thermal groundwater karst channels, and groundwater mean residence time. The ...
... ; Stevanović, Z.; Vasić, L.; Ristić-Vakanjac, V. 3D Modeling, and monitoring of karst system as a base for its evaluation and utilization—A case study from eastern Serbia. Environ. Earth Sci. 2014, 71, 525–532. [CrossRet] Sustainabilihy 2023, 15, 11146 14of14 16. 17. 18. 19. 20. 21. ...
... changes and groundwater grouping, data by multivariate statistical methods within one karst system: Recharge-discharge zone (Eastern Serbia case study). Carbonates Evaporites 2020, 35, 15. [CrossRef] Disclaimer/Publisher's Note: The statements, opinions and data contained in all publications are ...Ljiljana Vasić, Saša Milanović, Tina Dašić. "Definition of Circulation Conditions and Groundwater Genesis of the Complex Krupaja Hydrogeological Karst System (Eastern Serbia)" in Sustainability, MDPI AG (2023). https://doi.org/10.3390/su151411146
-
An aproach to Implementation of blended learning in a university setting
... identity verification The Moodle platform can be set to allow access both to authenticated users and guests. At FMG Moodle is being used in regular study courses, and student activity progress is continuously monitored during the school year, hence an authentication system permitting access to ...
... demand that they be separated. An example of one such entry is: population, A population is the set of all individuals of interest in a particular study популација, Популација је скуп скуп свих индивидуа од интереса у неком истраживању. These dictionaries are not proper lexical resources, since ...Ivan Obradović, Ranka Stanković, Olivera Kitanović, Jelena Prodanović . "An aproach to Implementation of blended learning in a university setting" in Proceedings of the Second International Conference on e-Learning, eLearning 2011, September 2011, Belgrade, Serbia, Belgrade : Belgrade Metropolitan University (2011)
-
Značaj geografske širine za lociranje uzročnika magnetnih anomalija kod prospekcije arheoloških lokaliteta
Vesna Cvetkov (2020)... Bescoby, D. J., Gavin, C. C., Chroston, P. N., 2004. Enhanced interpretation of magnetic survey data using artifi- cial neural networks: a case study from Butrint, southern Albania. Archaeologi- cal Prospection 11, 4: 189-199. Bevan, B.W. 1998. Geophysical explo- ration for archaeology: An introduction ...
... Prog. Phys. 69: 2205- 2257. Linford, N., Canti, M.G., 2001. Geop- hysical evidence for fires in antiquity: preliminar results from an experimen- tal study. Archaeological Prospection 8: 211-225. Мужијевић, Р., Старчевић, М., Стојановић, Р. 1992. Примена геофизике у археологији. Археологија и природне ...Vesna Cvetkov. "Značaj geografske širine za lociranje uzročnika magnetnih anomalija kod prospekcije arheoloških lokaliteta" in Aktuelna interdisciplinarana istraživanja tehnologije u arheologiji jugoistočne Evrope: Zbornik radova, Prvi skup Sekcije za arheometriju, arheotehnologiju, geoarheologiju i eksperimentalnu arheologiju Srpskog arheološkog društva, Beograd, 28.02.2020. , Beograd : Srpsko arheološko društvo (2020)
-
Demise of the Wetterstein Carbonate Platform and onset of the Dachstein Carbonate Platform recorded in deep-water successions of the East Bosnian-Durmitor megaunit (Pliješevina, northern Montenegro, Dinarides)
Milica Mrdak, Eva Wagerer, Milan Sudar, Nevenka Djerić, Martin Đaković, Hans-Jürgen Gawlick. "Demise of the Wetterstein Carbonate Platform and onset of the Dachstein Carbonate Platform recorded in deep-water successions of the East Bosnian-Durmitor megaunit (Pliješevina, northern Montenegro, Dinarides)" in Geologica Carpathica, Central Library of the Slovak Academy of Sciences (2024). https://doi.org/10.31577/GeolCarp.2023.26
-
Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation
kontinentalna tektonika: kompresija, kontinentalna tektonika: ekstenzija, kontinentalna tektonika: transkurentni i transformni rasedi, pukotine, rasedi, zone snažnih deformacija, kinematika deformacija kore i omotača, teorijska mehanika, modelovanje... also proven itself to image 3-D velocity fields in subduction models (Strak & Schellart 2014). However, in our study we focus on 2-D deformation occurring in a horizontal plane, as our study materials are not transparant, and we use planar view images to determine deformation. In this paper we seek ...
... can be difficult to observe due to limited spatial resolution (Nilforoushan et al. 2008). PIV relies on the presence of contrasting texture of the study object in view, and potentially allows for a higher spatial resolution of the deformation field compared to methods where the deformation of an initially ...
... resolution loss in regions with large cumulative extension. The procedure assumes that the PIV-derived velocities do not contain outliers. In this study we remove outliers based on a threshold displacement value as a function of the standard deviation of all displacement magnitudes (Thielicke & Stamhuis ...Taco Broerse, Nemanja Krstekanić, Cor Kasbergen, Ernst Willingshofer. "Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation" in Geophysical Journal International, Oxford University Press (OUP) (2021). https://doi.org/10.1093/gji/ggab120
-
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... Jámbor, and K. Szentgyörgyi, 1988, Neogene sedimentation in Hungary. In: Royden, L. H. and F. Horváth (Eds.), The Pannonian Basin – A Study in Basin Evolution, AAPG Memoir, v. 45, p. 57–67. Biju‐Duval, B. J., J. Dercourt, and X. Le Pichon, 1977, From the Tethys ocean to the Me ...
... (Pannonian s.l.) deposits of Hungary. In: Teleki, P. G., R. E. Mattick, and J. Kókay (Eds.), Basin Analysis in Petroleum Exploration, A Case Study from the Békés Basin, Hungary, Kluwer Academic Publishers, Dordrecht, p. 111–142. Emery, D., and K. J. Myers, 1996, Sequence Stratigraphy ...
... of seismic reflection data to chronostratigraphy of the Pannonian basin. In: Royden, L. H., Horváth, F. (Eds.), The Pannonian basin. A study in basin evolution, AAPG, Memoir, v. 45, p. 97–105. Horváth, F., and S. Cloetingh, 1996, Stress‐induced late‐stage subsidence anomalies in the Pannonian ...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)
-
NMR kinetic studies of the interactions between [Ru(terpy)(bipy)(H2O)]2+ and some sulfur-donor ligands
Aleksandar Mijatović, Biljana Šmit, Ana Rilak, Biljana Petrović, Dragan Čanović, Živadin D. Bugarčić (2012)Reakcije supstitucije monofunkcionalnog [Ru(terpi)(bipi)(H2O)]2+ kompleksa, gde je terpi = 2,2′:6′,2″-terpiridin i bipi = 2,2′-bipiridin, sa biološki relevantnim sumporo donorskim ligandima, kao što su tiourea, l-metionin, l-cistein i glutation, proučavane su u vodenim rastvorima tehnikom 1H i 13C NMR spektroskopije. Sve reakcije su proučavajne na pH 7,4, u prisustvu fosfatnog pufera, da bi se oponašalo fiziološko okruženje tokom procesa supstitucije. Reakcije se izvode na 295 K pod uslovima reakcija drugog reda. Uočeni rezultati pokazuju da brzina supstitucije snažno zavisi ...Aleksandar Mijatović, Biljana Šmit, Ana Rilak, Biljana Petrović, Dragan Čanović, Živadin D. Bugarčić. "NMR kinetic studies of the interactions between [Ru(terpy)(bipy)(H2O)]2+ and some sulfur-donor ligands" in Inorganica Chimica Acta, Elsevier BV (2012). https://doi.org/10.1016/j.ica.2012.09.016
-
Rangiranja bagera za njihovu revitalizaciju primenom višekriterijumske analize
Obzirom da je na našim površinskim kopovima trenutno u eksploataciji veći broj rotornih bagera sa sličnim tehničkim karakteristikama i približno istom starošću postavlja se pitanje kako rangirati bagere, i kojim redom da se izvrši njihova revitalizacija. Za ocenu stanja i rangiranje ovako velikog broja bagera najpogodnije se pokazalo korišćenje višekriterijumskih metoda sa višeatributnom ocenom, odnosno bodovanje referentnih indikatora stanja bagera na osnovu ekspertske ocene. U ovom radu prikazan je metodološki pristup koji je korišćen prilikom izrade Studije «Produžetak radnog ...... referential indicators based on expert grading. This paper demonstrates the methodological approach used during the development of the feasibility study: Increasing of equipment work life in EPS open pit mines. KEY WORDS: BUCKET WHEEL EXCAVATORS, REVITALIZATION, RANKING, MULTICRITERIA ANALYSIS ...Ivan Obradović, Dragan Ignjatović, Ranka Stanković, Ljiljana Ivković. "Rangiranja bagera za njihovu revitalizaciju primenom višekriterijumske analize" in MAREN 2006, Međunarodni simpozijum Mehanizacija i automatizacija u rudarstvu i energetika, zbornik radova, septembar 2006, Beograd, Univerzitet u Beogradu-Rudarsko-geološki fakultet (2006)
-
Testing the energy value of different types of coal by the method of active thermography
In this paper, coal thermograms are presented and analyzed in order to determine their energy value. Two types of coal of different categories, brown and lignite, were selected for active thermographic imaging. The tested coal samples were processed before measurement so that they are similar in dimensions and have two plane-parallel smooth surfaces. The test samples were "primarily" heated under the same conditions and the process of their cooling was monitored by a thermal camera. "Then" they were cooled ...Stevan Đenadić, Ljubiša Tomić, Vesna Damnjanović, Predrag Jovančić, Dragutin Jovković. "Testing the energy value of different types of coal by the method of active thermography" in 9th International Scientific Conference on Defensive Technologies, Belgrade, Serbia, 15-16 October 2020, The Military Technical Institute (2020)
-
Uniaxial compressive strength test before and after standard fire test on rock mass
Stefan Mitrović, Goran Todorović, Bojan Kostić, Milica Mirković-Marjanović, Nikola Božović, Marija Krstić, Aleksandar Erić, Radovan Gospavić, Snežana Ilić, Aleksandar Kijanović (2022)... standard fire test according to SRPS EN 1363-1, with the intention to test uniaxial compressive strength after standard fire test. The aim of this study was to examine the uniaxial compressive strength of the rock, before and after standard fire test on the rock mass. The paper presents the strengths ...Stefan Mitrović, Goran Todorović, Bojan Kostić, Milica Mirković-Marjanović, Nikola Božović, Marija Krstić, Aleksandar Erić, Radovan Gospavić, Snežana Ilić, Aleksandar Kijanović. "Uniaxial compressive strength test before and after standard fire test on rock mass" in Fifth symposium of the Macedonian Association for Geotechnics, Ohrid, North Macedonia, 23-25. 06. 2022, Macedonian Association for Geotechnics (2022)
-
Trans-Lithospheric Diapirism as a Possible Mechanism for Ophiolite Emplacement?
Nikola Stanković, Taras Gerya, Vladica Cvetković, Vesna Cvetkov. "Trans-Lithospheric Diapirism as a Possible Mechanism for Ophiolite Emplacement?" in EGU General Assembly 2024, Vienna, 14-19 April 2024, Göttingen : Copernicus GmbH (2024). https://doi.org/10.5194/egusphere-egu24-568
-
Resource-based WordNet Augmentation and Enrichment
In this paper we present an approach to support production of synsets for SerbianWordNet(SerWN)byadjustingPrincetonWordNet(PWN)synsetsusing several bilingual English-Serbian resources. PWN synset definitions were automatically translated and post-edited, if needed, while candidate literals for Serbian synsets were obtained automatically from a list of translational equivalents compiled form bilingual resources. Preliminary results obtained from a setof1248selectedPWNsynsetsshowthattheproducedSerbiansynsetscontain 4024 literals, out of which 2278 were offered by the system we present in this paper, whereas experts added the remaining 1746. Approximately one half of ...... production and evaluation of SerWN synsets, the procedure includes obligatory post-editing of automatically prepared datasets. In our first case-study we applied our approach to 1248 synsets, and found out that expert had that 56.6% of literals in produced Serbian synset were literals offered by ...
... L., Stanković, R., Obradović, I., Kitanović, O., and Cvjetić, A. (2016). Development of terminological resources for expert knowledge: a case study in mining. Knowledge Management Research & Practice, 14(4):445–456. Kovačević, L., Injac, V., and Begenišić, D. (2004). Bibliotekarski terminološki ...Ranka Stanković, Miljana Mladenović, Ivan Obradović, Marko Vitas, Cvetana Krstev. "Resource-based WordNet Augmentation and Enrichment" in Proceedings of the Third International Conference Computational Linguistics in Bulgaria (CLIB 2018), May 27-29, 2018, Sofia, Bulgaria, Sofia : The Institute for Bulgarian Language Prof. Lyubomir Andreychin, Bulgarian Academy of Sciences (2018)
-
Underground loading-haulage equipment selection with application of topsis method with different weighting methods of criteria
The choice of adequate mining machines is one of the most complex problems in the underground exploitation of mineral raw materials. The weight of such a decision is reflected in the high prices of these machines and the occurrence of even greater costs during their use if their choice was wrongly conceived. There are numerous examples from practice in which such decisions were made solely on the basis of comparing the prices of machines, without considering any of the ...utovarno-transportna mehanizacija, izbor, TOPSIS, entropija, standardna devijacija, težina kriterijumaVladimir Krivošić, Luka Crnogorac, Rade Tokalić. "Underground loading-haulage equipment selection with application of topsis method with different weighting methods of criteria" in Underground mining engineering, University of Belgrade - Faculty of Mining and Geology (2024)
-
Efficiency and lifetime of medium voltage transformers
Snežana Aleksandrović, Vesna Damnjanović. "Efficiency and lifetime of medium voltage transformers" in XVI International Scientific – Professional Symposium, INFOTEH, Jahorina, 22. mart - 24. mart 2017., Istočno Sarajevo : Elektrotehnički fakultet, Univerzitet u Istočnom Sarajevu (2017)