Претрага
650 items
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Natural two-dimensional pyrophyllite: Nanoscale lubricant, electrical insulator and easily-machinable material
Borislav Vasić, Radoš Gajić, Ivana Milošević, Žarko Medić, Marina Blagojev, Marko Opačić, Aleksandar Kremenović, Dejan Lazić (2022)Pyrophyllite, with the chemical formula Al2Si4O10(OH)2, is a naturally occurring and abundant van der Waals mineral belonging to the group of phyllosilicates. It is very soft, layered crystal used for sculpting and an excellent electrical and thermal insulator aimed for the operation at high pressure and temperature. Here, for the first time, two-dimensional (2D) pyrophyllite obtained by both mechanical and liquid phase exfoliation is presented and investigated at the nanoscale. The layered structure provides low friction coefficient of around ...Atomic force microscopy, Insulating properties, Nanofriction and wear, Natural two dimensional materials, Phyllosilicates, PyrophylliteBorislav Vasić, Radoš Gajić, Ivana Milošević, Žarko Medić, Marina Blagojev, Marko Opačić, Aleksandar Kremenović, Dejan Lazić. "Natural two-dimensional pyrophyllite: Nanoscale lubricant, electrical insulator and easily-machinable material" in Applied Surface Science, Elsevier BV (2022). https://doi.org/10.1016/j.apsusc.2022.155114
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Maturation and isotopic changes of individual hydrocarbons in lignite lithotypes through diagenesis and early catagenesis
... Kostolac Вазш, Serbia were used as substrates. In order to investigate the influence of lignite lithotype on maturity changes of organic танет, the study was сагпед using mineral-rich coal, matrix coal and xylite-rich coal. Simulation ог matur:ty was performed by mild open system pyrolysis durnng 4 ...Ivan Kojić, Achim Bechtel, Reinhard Sachsenhofer, Dragana Životić, Ksenija Stojanović. "Maturation and isotopic changes of individual hydrocarbons in lignite lithotypes through diagenesis and early catagenesis" in 29th International Meeting on Ogranic Geochemistry, 1-6 September 2019, Gothenburg, Sweden , European Association of Organic Geochemists (2019)
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From post-disaster landslides inventory to open landslides data
Biljana Abolmasov, Miloš Marjanović, Uroš Đurić, Jelka Krušić. "From post-disaster landslides inventory to open landslides data" in Proceedings of 3rd European Regional Conference of IAEG/ Athens/ Greece/ 6-10 October 2021, International Association for Engineering Geology and the Environment (2021)
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Interactions of Copper(II) Complexes of some Schiff base ligands with calf thymus DNA and bovine serum albumin
Joni prelaznih metala u kombinaciji sa različitim ligandima nude veliki broj mogućnosti za ispitivanje potencijalnih bioaktivnosti. Među jonima prelaznih metala, bakar je poznat kao endogeni metal za ljude, sa karakterističnim biološkim redoks aktivnostima i relativno jakim afinitetom za nukleobaze. Kompleksi bakra ispoljavaju svoju antitumornu aktivnost na nekoliko različitih načina, generišu veliku količinu ROS, što uzrokuje oksidativno oštećenje mitohondrija i biomakromolekula. Nađeno je da kompleksi bakra(II) imaju umeren do dobar afinitet vezivanja sa DNK, uglavnom putem interkalacije.Angelina Petrović, Aleksandar Mijatović, Rada Baošić, Jovana Bogojeski. "Interactions of Copper(II) Complexes of some Schiff base ligands with calf thymus DNA and bovine serum albumin" in 6. Konferencija mladih hemičara Srbije, Srpsko hemijsko društvo (2018)
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Post Early Miocenevertical-axis clockwise rotation in the West Vardar Zone of Serbia
... mćlange, distal parts of adjacent continental margins and post-obduction Late Cretaceous sediments and Cenozoic igneous rocks. The area covered by this study belongs to the West Vardar and Jadar-Kopaonik units semsw Schmid et al. (2008). In this 160 km long strip we sampled on the north in the wider Rudnik ...Vesna Lesić, Emo Marton, Vesna Cvetkov, Dragana Jovanović. "Post Early Miocenevertical-axis clockwise rotation in the West Vardar Zone of Serbia " in Environmental, Structural and Stratigraphical Evolution of the Western Carpathians, 11th ESSEWECA Conference, Geophysical Institute, Slovak Academy of Sciences Bratislava (2018)
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Simple 2D Gravity-density inversion for modeling of the sedimentary basin basement
Ivana Vasiljević, Snežana Ignjatović, Dragana Đurić,. "Simple 2D Gravity-density inversion for modeling of the sedimentary basin basement" in International scientific conference Challenges in Applied Geology and Geophysics: 100th Anniversary of Applied Geology at AGH University of Science and Technology, Book of abstracts, Kraków, Poland, 10-13. Sep. 2019, Kraków, Poland : AGH University of Science and Technology (2019)
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The correlation of Upper Miocene lithostratigraphic units of the southern part of the Pannonian basin
Filip Anđelković, Dejan Radivojević (2019)... deposition leads to a better understanding of petroleum gelogy. Further in the text, those units with formation rank are listed. Geologists who study the Pannonian basin use different names for the same fomations, thus making correlation more difficult. According to this, the first name is the ...Filip Anđelković, Dejan Radivojević. "The correlation of Upper Miocene lithostratigraphic units of the southern part of the Pannonian basin" in Knjiga sažetaka i radova II Kongresa geologa Bosne i Hercegovine, Laktaši BiH, oktobar 2-4, 2019, Udruženje geologa u Bosni i Hercegovini (2019)
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Prognozna ocena resursa kaolinitskih glina u sedimentnim basenima Srbije
Vladimir M. Simić (2003)Kaolinitske gline predstavljaju jednu od privredno najznačajnijih nemetaličnih mineralnih sirovina u Srbiji. Ležišta tih glina odavno se istražuju i eksploatišu u Aranđelovačkom i Kolubarskom basenu i basenima vlašićkog antiklinorijuma. Osim toga, u većem ili manjem obimu istražene su mnoge lokalnosti, a na nekima od njih vršila se povremena eksploatacija. Dosadašnja istraživanja kaolinitskih glina imala su, međutim, prevashodno uzak istraživački cilj - utvrđivanje rezervi glina određenog ležišta, dok su istraživanja regionalnog karaktera bila malog obima i vezana za delove pojedinih ...prognozna ocena, resursi kaolinitskih glina, sedimentni baseni, Srbija, geologija, mineralogija, kvalitet, potencijalnostVladimir M. Simić. Prognozna ocena resursa kaolinitskih glina u sedimentnim basenima Srbije, Beograd : V. Simić, 2003
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Some models for determination of parameters of the soil oscillation law during blasting operations
... equation two parameters, K and n appear and they are conditioned both by rock mass characteristics and blasting conditions. The practical part of this study includes experimental investigations performed in the Veliki Krivelj Open Pit in the Bor District located in Eastern Serbia and investigations carried ...
... as unfavorable; and ‚ if |εmax| < 3S, the functional correlation is accepted as a good one. 4. Methodology of Research The practical part of this study includes: ‚ experimental investigations performed in the Veliki Krivelj Open Pit in the Bor District, and ‚ investigation carried out during mass mining ...
... values determined by the starting conditions, and that has been done in model 2. The relation between parameters K and n has been obtained in this study. This relation made it possible to find the value of the second parameter for the given determined value of one parameter. In practice it is simpler ...Suzana Lutovac, Dragan Medenica, Branko Gluščević, Rade Tokalić, Čedomir Beljić. "Some models for determination of parameters of the soil oscillation law during blasting operations" in Energies, Basel, Switzerland : MDPI (2018). https://doi.org/10.3390/en9080617
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Back-arc underplating provided crustal accretion affecting topography and sedimentation in the Adria microplate
Paolo Mancinelli, Vittorio Scisciani, Cristina Pauselli, Gérard M. Stampfli, Fabio Speranza, Ivana Vasiljević (2021)Supported by evidence of deep crustal sources for the observed magnetic anomalies in Central Italy and by outcropping gabbros in the Croatian archipelago, we model the observed gravity and magnetic anomalies in the Central Adriatic Sea and surroundings. We suggest that the major magnetic anomalies in the area are related to a wide underplating and propose that this volume represents the first stage of the back-arc Adria continental breakup in Early Permian times. During the Palaeotethys-Adria collision, underplating has ...Paolo Mancinelli, Vittorio Scisciani, Cristina Pauselli, Gérard M. Stampfli, Fabio Speranza, Ivana Vasiljević. "Back-arc underplating provided crustal accretion affecting topography and sedimentation in the Adria microplate" in Marine and Petroleum Geology, Elsevier Ltd. (2021). https://doi.org/10.1016/j.marpetgeo.2021.105470
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Hydrogeochemistry of Uranium in the Groundwaters of Serbia
Marina Ćuk, Maja Todorović, Petar Papić, Jovan Kovačević, Zoran Nikić. "Hydrogeochemistry of Uranium in the Groundwaters of Serbia" in Uranium - Past and Future Challenges, Springer International Publishing Switzerland (2015). https://doi.org/10.1007/978-3-319-11059-2_89
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Effectiveness Analysis of Different Bucket-wheel Excavators
Coal production in open-pit lignite mines in the Republic of Serbia is performed with continuous work systems. In addition to coal production, the same systems are used for the exploitation of large quantities of overburden. According to the reliability concept, continuous systems are in linear connection. If the failure occurs in one part of the system, that will produce a downtime of the entire system. The initial and most important factor of continuous systems is the bucket-wheel excavator. It ...Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Miloš Tanasijević, Filip Miletić. "Effectiveness Analysis of Different Bucket-wheel Excavators" in 8th International Conference Mining and Environmental Protection, Sokobanja, 22-25 September 2021, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia (2021)
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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)... phoric acid. Through these chemical processes, the secular equi- librium between the specific decay series breaks down. The main objective of this study was to extract and character- 23; ize purified gypsum, as well as phosphogypsum. A secondary ol radionuclide activities in sampi waste deposit ...
... recrystallization process. The 64 BOSNIA _ AND Kosovo iizre Fig. 1. Location of the phosphogypsum landfill. results obtained in this study may promote the potential utiliza- tion of purified phosphogypsum in the construction industry and in agriculture. Materials and methods Samples ...
... elixir prahovo.rs/en/about-the-company-2 (accessed 5 May 2018). Hammas l., Horchani-Naifer K. & Fćrid M. (2013) Characterization and optical study of phosphogypsum industrial waste. Studies im Chemical Process Technology, 1, 30-36. Hua S, Wang K. & Yao X. (2016) Developing high performance ...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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Classification of Terms on a Positive-Negative Feelings Polarity Scale Based on Emoticons
Mihailo Škorić (2017)The goal of this paper is to draw attention to the possibility of using emoticon-riddled text on the web in language-neutral sentiment analysis. It introduces several innovations in the existing framework of research and tests their effectiveness. It also presents a software tool especially made for that purpose, explains how it builds a database with sentimental value of terms and offers the user manual. Finally, it presents a software tool that tests the new database and gives some examples ...... same posts and it was concluded that the machine assesses the mood of the author only slightly worse than a human. At University of Tokyo in 2009 a study was published, in which the nine moods were analysed in text using complex finite automata that recognizes the grammatical structure of the text (N ...
... possi- ble feelings: anger, resentment, excitement, fear, affection, happiness, relief, shame, sadness and surprise (Ptaszynski et. al., 2010). This study was later expanded, and in 2011 a paper was published on the research in which emoti- cons were defined as parts of natural language, so it was suggested ...
... a nearby term; – determiners must have a predetermined value. In the following chapters it will be explained in detail how the databases for this study were created, from the collection of the corpus to the export of completed database, which can then be used in several ways. 2.1 Collecting textual ...Mihailo Škorić. "Classification of Terms on a Positive-Negative Feelings Polarity Scale Based on Emoticons" in Infotheca, Faculty of Philology, University of Belgrade (2017). https://doi.org/10.18485/infotheca.2017.17.1.4
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Mesozoic carbonate rocks in Serbia used as dimension stone
Vesna Matović, Tijana Vojnović Ćalić (2016)The building industry in Serbia uses, to a great extent, imported natural stone for architectural purposes. The significance of local deposits, particularly limestones, is not adequately perceived despite the country’s abundance of these valuable resources. Therefore, this study focuses on Serbia’s Mesozoic carbonate rocks, specifically on the deposits of four selected quarries: Klisura, Skrzut, Struganik, and Tisnica. The quality and prospects of the application of these limestones has not yet been the subject of a detailed, comprehensive investigation. Therefore, ...... use—with the possible effect on Serbia's building and stone industry, and eventually the export market. @ Springer V. Matović, T. V. Ćalić Study area The study area includes four selected limestone quarries: Klisura (Fig. 1a), Skrzut (Fig. 1b), Struganik (Fig. 1c), and Tisnica (Fig. 1d). These ...
... local deposits, particularly limestones, is not adequately perceived despite the country's abun- dance of these valuable resources. Therefore, this study focuses on Serbia's Mesozoic carbonate rocks, specifically on the deposits of four selected quarries: Klisura, Skrzut, Struganik, and Tisnica ...Vesna Matović, Tijana Vojnović Ćalić. "Mesozoic carbonate rocks in Serbia used as dimension stone" in Bulletin of Engineering Geology and the Environment, Springer Science and Business Media LLC (2016). https://doi.org/10.1007/s10064-015-0722-0
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Structural dissymmetrization of optically anisotropic Grs64±1Adr36±1Sps2 grandite from Meka Presedla (Kopaonik Mt., Serbia)
In this paper, grandite core with Grs64±1Adr36±1Sps2composition was crystallographically studied. This core represents zone A of the macroscopically visiblefive A–E zones of the optically anisotropic Grs58–64 Adr36–42Sps2 grandite. The applied procedure includes the detailed analysis of the powder diffraction patterns, and the Rietveld refinements of the crystal structures in a series of 18 space groups and two mixtures, which were followed by the comparative analysis of the R-values, site occupancy factors, and the bond lengths and angles. Synthesis of all ...Pavle Tančić, Aleksandar Kremenović, Predrag Vulić. "Structural dissymmetrization of optically anisotropic Grs64±1Adr36±1Sps2 grandite from Meka Presedla (Kopaonik Mt., Serbia)" in Powder Diffraction, Cambridge University Press (CUP) (2019). https://doi.org/10.1017/S0885715619000897
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Split-Desktop software for the analysis of fragment size distribution of blasted rock mass
Milanka Negovanović, Lazar Kričak, Stefan Milanović, Jovan Marković, Nikola Simić, Snežana Ignjatović (2023)Drobljenje stena je najvažniji pokazatelj u proceni efekata miniranja pri proizvodnom miniranju u površinskoj eksploataciji. Stepen drobljenja stena ima veliki uticaj na efikasnost daljih operacija utovara, transporta, drobljenja i mlevenja. Optimalno drobljenje stena pri proizvodnom miniranju utiče na smanjenje ukupnih troškova proizvodnje. Stoga je pouzdana procena veličine drobljenja odminirane stenske mase veoma važno pitanje, ne samo u operacijama miniranja, već i u rudarskoj proizvodnji. Za predviđanje distribucije veličine komada odminirane stenske mase postoje različiti empirijski modeli. KUZ-RAM model omogućava ...Milanka Negovanović, Lazar Kričak, Stefan Milanović, Jovan Marković, Nikola Simić, Snežana Ignjatović. "Split-Desktop software for the analysis of fragment size distribution of blasted rock mass" in 9th International Conference Mining and environmental protection, Sokobanja, Serbia, 24 – 27. May 2023, Belgrade : University of Belgrade, Faculty of Mining and Geology (2023)
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Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду
... Ž., 2012: Equilibrium and kinetic studies of the reactions between [Ru(terpy)(bipy)Cl]Cl complex and biologically important N-donor ligands Inorg. Chem. Acta, vol. 383 p. 300–304. MIJATOVIĆ A., ŠMIT B., RILAK A., PETROVIĆ B., ČANOVIĆ D., BUGARČIĆ Ž.D., 2012: NMR kinetic studies of the interactions ...
... Using AlFe-Pillared Clay Catalysts. Chinese Journal of Catalysts, 30 (1), 14–18. ŠTRBAC N., MIHAJLOVIĆ I., ANDRIĆ V., ŽIVKOVIĆ Ž., ROSIĆ A., 2011: Kinetic investigations of two processes for zinc recovery from zinc plant residue. Canadian Metallurgical Quarterly, 50(1), 28–36. 4. СПИСАК ИЗАБРАНИХ ...
... Polymer Science, Vol. 274, Nr. 10, 966–973. POHLMEIER A., ILIC M., 1998: Binding reactions at the solid-liquid interface analysed by concept of kinetic and affinity spectra: Cd(II) in Montmorillonites. Progress in Colloid and Polymer Science, Vol. 109, 192–201. ILIC M., KOGLIN E., POHLMEIER A., ...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
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Age of the Jurassic hemipelagic sediments from the Ljubiš area (Zlatibor Mt., SW Serbia)
Nikita Bragin, Nevenka Đerić (2020)... deposition of the Ljubiš Formation could have started earlier than previously thought – in the early Bathonian or even in the late Bajocian. Further study of the bio- stratigraphy and detailed analysis of the sections would be needed to achieve a better understanding of the composition and nature of ...
... gratitude and our respects to our friend and col league, Nataša GERZINA. After many joint fieldtrips, Nataša GERZINA passed away in June 2019. The study would not have been possible without the extraordinary knowledge and collabo ration of the esteemed Nataša GERZINA. REFERENCES AUBOUIN, J., BONNEAU ...
... Dotted lines show the stratigraphic ranges of taxa determined in open nomenclature and taxa for which the stratigraphic range needs more detailed study. Stratigraphic ranges were attributed according to BAUMGARTNER et al. (1995b) with additional data from SUZUKI & GAWLICK (2009) and GAWLICK et al. ...Nikita Bragin, Nevenka Đerić. "Age of the Jurassic hemipelagic sediments from the Ljubiš area (Zlatibor Mt., SW Serbia)" in Geologia Croatica, Croatian Geological Survey (2020). https://doi.org/10.4154/gc.2020.11
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2D geoelectrical resistivity tomography application at the former city waste dump "Ada Huja": Eco-geological problem
... methods (Dahlin, 1996). Three-dimensional (3D) surveys provide information about the whole geometry of the surveyed half-space. For this kind of study, the largest amount of acquired data is needed (couple of thousands) (Loke, 2004). 2D geoelectrical surveying was applied at the former communal ...
... carbon-dioxide or reduce carbon-dioxide with hydrogen (Themelis and Ulloa, 2006). Looking at the research done by the Environmental and Energy Study Institute (Pierson, 2013), and neglecting the cost of installation of such a plant, the calculated values were that one million tons on a day to ...
... asbestos contaminated waste, 75/2010. Belgrade, Serbia. PIERSON, R. (2013) Landfill Methane, Fact Sheet. Washington: Environmental and Energy Study Institute. REPUBLICAL STATISTICAL INSTITUTE (2011) Republic of Serbia Census report 2011. Belgrade, Serbia. REPUBLIC GEODETIC AUTHORITY (2019) ...Branislav Sretenović, Filip Arnaut, Ivana Vasiljević, Vesna Cvetkov. "2D geoelectrical resistivity tomography application at the former city waste dump "Ada Huja": Eco-geological problem" in Podzemni radovi, Centre for Evaluation in Education and Science (CEON/CEES) (2019). https://doi.org/10.5937/PodRad1934059S