Претрага
930 items
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Flyrock induced by blasting in surface mining
Milanka Negovanović, Lazar Kričak, Snežana Ignjatović, Stefan Milanović, Jovan Marković, Nikola Simić, Rade Šarac (2022)Miniranje predstavlja i dalje najefikasniji i najjeftiniji način eksploatacije velikih količina čvrstih mineralnih sirovina na površinskim kopovima. Energija eksplozije se koristi za fragmentaciju čvrste stenske mase do zahtevane granulacije. Pored pozitivnih efekata miniranja, postoje i određeni neželjeni efekti svakog procesa miniranja koji se mogu javiti, a to su: potresi tla, razletanje komada stene, vazdušni udari, otrovni i zagušljivi gasovi i prašina. Razletanje komada stene je nekontrolisano izbacivanje fragmenata odminirane stenske mase i predstavlja jedan od glavnih izvora materijalne štete ...Milanka Negovanović, Lazar Kričak, Snežana Ignjatović, Stefan Milanović, Jovan Marković, Nikola Simić, Rade Šarac. "Flyrock induced by blasting in surface mining" in Rudarski glasnik, Beograd : Rudarski institut (2022). https://doi.org/10.25075/BM.2022.05
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The interaction of organoselenium trans-palladium(II) complexes toward small-biomolecules and CT-DNA
Serija organoselenijum trans-paladijum(II) kompleksa 1 (bis(2-(fenilselanilmetil)oksolan)dihloropaladijum(II)), 2 (bis(2-(fenilselanilmetil)oksan)dihloropaladijum(II)) i 3 (bis(2) ,2-dimetil-3-(fenilselanil)oksan)dihloropaladijum(II)) su korišćeni za ispitivanje reaktivnosti ovog specifičnog tipa kompleksa prema različitim bio-molekulima. Ovaj sistem je od posebnog interesa jer se jako malo zna o supstitucionim reakcijam organoselenijum paladijum(II) kompleksa sa trans konfiguracijom. Zamena koordinovanog hlorida sa serijom malih bio-molekula (l-Met, l-His, l-Cis, GSH i 5′-GMP) proučavana je pod uslovima pseudo-prvog reda kao funkcija koncentracije nukleofila i temperature korišćenjem tehnika zaustavljenog toka. Rezultati za proučavane komplekse ukazuju da ...Vera M. Divac, Aleksandar Mijatović, Marina D. Kostić, Jovana Bogojeski. "The interaction of organoselenium trans-palladium(II) complexes toward small-biomolecules and CT-DNA" in Inorganica Chimica Acta, Elsevier BV (2017). https://doi.org/10.1016/j.ica.2017.07.012
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Anisotropic grossular–andradite garnets: Evidence of two stage skarn evolution from Rudnik, Central Serbia
This paper presents LA-ICP-MS data for garnets from the Rudnik skarn deposit (Serbia), which range from Grs45–58Adr40–52Alm2–3 in the core and Adr70–97Grs2–29Sps1 in the rim displaying anisotropy and zoning. In spite of wide compositional variations the garnets near the end-member of andradite (Adr > 90) are generally isotropic. Fe-rich rims exhibit LREE depletion and flat HREE pattern with weak negative Eu anomaly, including higher As and W contents. On the other side, the Fe-poorer core shows flat REE pattern ...... (Manuscript received November 1, 2020; accepted in revised form December 21, 2020; Associate Editor: Igor Broska) Abstract: This paper presents LA-ICP-MS data for garnets from the Rudnik skarn deposit (Serbia), which range from Grs45–58Adr40–52Alm2–3 in the core and Adr70–97Grs2–29Sps1 in the rim displaying ...
... radite (grandite) garnets are the commonest in skarn deposits, several studies concerning the composition of REE in garnets are available up to date (e.g. Jamtveit & Hervig 1994; Nicolescu et al. 1998; Smith et al. 2004; Gaspar et al. 2008; Zhai et al. 2014; Park et al. 2017; Xiao et al. 2018) ...
... carbonate–sandstone–shale sequences developing local contact metamorphic aureoles. So far, evidence of a plu- tonic body has not been confirmed. Borehole data show that Cretaceous sediments are in tectonic contact with peridotites (harzburgites) in the footwall, which are exposed in Stragari locality on ...Bojan Kostić, Danica Srećković-Batoćanin, Petyo Filipov, Pavle Tančić, Kristijan Sokol. "Anisotropic grossular–andradite garnets: Evidence of two stage skarn evolution from Rudnik, Central Serbia" in Geologica Carpathica, Central Library of the Slovak Academy of Sciences (2021). https://doi.org/10.31577/GeolCarp.72.1.2
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Hidrogeoekološki aspekti aksploatacije uglja u Pelagonijskom basenu (Makedonija)
Kostadin J. Jovanov (2016-06-24)Leţišta uglja „Suvodol“, „Brod-Gneotino“ su u eksploataciji, a leţište uglja „Ţivojno“je u fazi pripremi. Nalaze se u krajnjem jugoistočnom i juţnom delu Pelagonijskekotline. Sva tri leţišta stvorena su u neogenim sedimentima u jezerskim uslovimasedimentacije u zoni kontakta sa prekambrijumskim kristalastim stenama. Kod sva trileţišta ugalja se javljaju više slojeva različite debljine, u okviru kojih se nalaze klastičnisedimenti (gline, peskovi i dr.). U podini ugljenog basena nalaze se kristalaste steneprekambrijumske starosti.Teren u okolini leţišta uglja karakteriše se umereno kontinentalnom klimom, ...ugalj, podzemne vode, površinske vode, neogeni kompleks, izdani,transmisibilnost, nivo podzemne vode, sniţenje nivoa... je i grupno crpenje bunara B-1 do B-7 u trajanju 24 dana. Na početku crpenja ukupni kapacitet bunara iznosio je 153,0 l/s, nakon trećeg dana isti je opao na 126,5 l/s, posle desetog dana opao je na 107,8 l/s i na kraju posle sedamnaestog dana isti je opao na 89,7 l/s (Petreski i Trpčevska, 2014) ...
... iiiiii QQPPTT Na slici 4.12 date su realne i sračunate sumarne vrednosti iskopanog materijala u rudniku "Suvodol", dok je na slici 4.13 dat dijagram zavisnosti sračunatih u funkciji realnih vrednosti ovog parametra. Sa slike 4.13 moţe se videti da koeficijent korelacije izmeĎu Kostadin ...
... je u petom poglavlju. Pored izmene prirodnog reljefa, flore i faune, kvaliteta vode i vazduha, data je detaljna analiza izmene prirodnog reţima podzemnih voda. Pored Zaključka, u disertaciji je dat spisak literature, koja je korišćena tokom izrade ove disertacije. Tokom realizacije predmetne ...Kostadin J. Jovanov. "Hidrogeoekološki aspekti aksploatacije uglja u Pelagonijskom basenu (Makedonija)" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-06-24)
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Prospects for wider utilization of subgeothermal water resources: eastern Serbia case study
Stevanović Zoran, Saljnikov Aleksandar, Milenić Dejan, Martinović Mića, Goričanec Darko, Komatina Mirko, Dokmanović Petar, Antonijević Dragi, Vranješ Ana, Magazinović Sava (2011)Stevanović Zoran, Saljnikov Aleksandar, Milenić Dejan, Martinović Mića, Goričanec Darko, Komatina Mirko, Dokmanović Petar, Antonijević Dragi, Vranješ Ana, Magazinović Sava. "Prospects for wider utilization of subgeothermal water resources: eastern Serbia case study" in Geološki anali Balkanskog poluostrva no. 72, Beograd:Rudarsko-geološki fakultet (2011): 131-141. https://doi.org/10.2298/GABP1172131S
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Анализа примењених грејних система за загревање бушотинских нафтовода за транспорт парафинске нафте на пољима нафтне индустрије Србије
Даниловић Душан, Каровић-Маричић Весна, Ивезић Дејан, Баталовић Веселин, Живковић Мaрија, Лековић Бранко, Црногорац Мирослав (2012)Даниловић Душан, Каровић-Маричић Весна, Ивезић Дејан, Баталовић Веселин, Живковић Мaрија, Лековић Бранко, Црногорац Мирослав. "Анализа примењених грејних система за загревање бушотинских нафтовода за транспорт парафинске нафте на пољима нафтне индустрије Србије" in Техника-Електротехника no. 6, Beograd:Savez inženjera i tehničara Srbije (2012): 919-923
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Техничка дијагностика
Предраг Јованчић (2020)Предраг Јованчић. Техничка дијагностика, Београд : Универзитет у Београду, Рударско-геолошки факултет, 2020
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Analiza primenjenih grejnih sistema za zagrevanje bušotinskih naftovoda za transport parafinske nafte na poljima Naftne industrie Srbije
Danilović Dušan, Karović-Maričić Vesna, Ivezić Dejan, Batalović Veselin, Živković Marija, Leković Branko, Crnogorac Miroslav (2012)Danilović Dušan, Karović-Maričić Vesna, Ivezić Dejan, Batalović Veselin, Živković Marija, Leković Branko, Crnogorac Miroslav. "Analiza primenjenih grejnih sistema za zagrevanje bušotinskih naftovoda za transport parafinske nafte na poljima Naftne industrie Srbije" in Tehnika - Elektrotehnika no. 6, Beograd:Savez inženjera i tehničara Srbije (2012): 919-923
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Machine Learning and Deep Neural Network-Based Lemmatization and Morphosyntactic Tagging for Serbian
The training of new tagger models for Serbian is primarily motivated by the enhancement of the existing tagset with the grammatical category of a gender. The harmonization of resources that were manually annotated within different projects over a long period of time was an important task, enabled by the development of tools that support partial automation. The supporting tools take into account different taggers and tagsets. This paper focuses on TreeTagger and spaCy taggers, and the annotation schema alignment ...... the debug-data command. This option checks if there is an overlap between training and evaluation data, and if all fine-grained PoS-categories are mapped to the correspond- ing Universal PoS-categories. It also reports if there is a class imbalance. After all the checks were passed, the data could ...
... (Tufiş et al., 2009). Intera is the Serbian part of the multilin- gual corpus prepared in the scope of the project “Integrated European language data Repository Area” (Gavrilidou et al., 2006). It contains texts from law, health and edu- cation domains. Švejk, Floods, History are three short ...
... have assigned a tag ADV (adverb) to the word danima ‘lasting several days’, whereas others have regarded it as the instrumental case in plural of dan ‘day’ and used the tag N. • There are numerous lemma variants in SMD which decline differently; however, some inflected forms in their respective ...Ranka Stanković, Branislava Šandrih, Cvetana Krstev, Miloš Utvić, Mihailo Škorić. "Machine Learning and Deep Neural Network-Based Lemmatization and Morphosyntactic Tagging for Serbian" in Proceedings of the 12th Language Resources and Evaluation Conference, May Year: 2020, Marseille, France, European Language Resources Association (2020)
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Optimizacija vodosnabdevanja podzemnim vodama u Srbiji
Dušan Polomčić, Zoran Stevanović, Petar Dokmanović, Vesna Ristić-Vakanjac, Bojan Hajdin, Saša Milanović, Dragoljub Bajić (2012)... vodosnabdevanja je kljuéan ako se ima u vidu da podzemne vode uéestvuju sa oko 75% od ukupnih koli¢ina voda koje se koriste za javno snabdevanije stanovnistva u Srbiji. U nekim oblastima republike, trenutni kapaciteti izvoriSta podzemnih voda nisu dovoljni da podmire potrebe stanovnistva. Medutim, postoje ...
... (Polom¢ié et al. 2011) kojim je obelezeno 40 godina postojanja Departmana za hidrogeologiju Rudarsko-geoloSkog fakulteta u Beogradu. Namera autora je da se prezentacijom rada podstakne stru¢na i nauéna diskusija na skupu vezana za status podzemnih voda u Srbiji, zakonsku regulativu, potencijalne rezerve ...
... je Ministarstva zdravija i Republi¢kog zavoda za javno zdravlje i njegovih regionalnih zavoda. Svi vodovodi prema vazecim zakonskim aktima obavezni su da kontroliSu hemijski i bakterioloSki kvalitet sirovih i tretiranih uzoraka vode. UopSteno govoreci, postoji Znatna razlika u prirodnom kvalitetu podzemnih ...Dušan Polomčić, Zoran Stevanović, Petar Dokmanović, Vesna Ristić-Vakanjac, Bojan Hajdin, Saša Milanović, Dragoljub Bajić. "Optimizacija vodosnabdevanja podzemnim vodama u Srbiji" in Zbornik radova XIV srpskog simpozijuma o hidrogeologiji sa međunarodnim učešćem, Zlatibor, 17-20. maj 2012. godine , Beograd : Rudarsko-geološki fakultet (2012)
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Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia
Dragoljub Bajić, Dušan Polomčić (2014)A groundwater control system was designed to lower the water table and allow the pumping sta-tion “Bezdan 1” to be built. Based on a hydrodynamic analysis that suggested three alternative solutions, mul-ticriteria optimization was applied to select the best alternative. The fuzzy analytic hierarchy process methodwas used, based on triangular fuzzy numbers. An assessment of the various factors that influenced the selec-tion of the best alternative, as well as fuzzy optimization calculations, yielded the “weights” of the alternativesand the ...groundwater lowering, groundwater management scenario, fuzzy analytic hierarchy process,expert knowledge, triangular fuzzy numbers, linguistic variables... the natural language used by man and the numerical data used by a computer. In recent years there has been a rapid increase in the number and types of applications of systems based on the fuzzy theory. While it was originally used to analy- ze data that allow for partial set membership, to avoid the ...
... fuzzy бројевима и анализом различи- тих фактора као што су време које је потребно да се ниво подземних вода спусти на проектовани ниво, затим карактеристике система одбране од подзем- них вода и фактор сигурности, дате су различите оцене које утичу на избор оптималне алтернативе. Према прорачунима ове ...
... вода црпне станице „Бездан 1”, тзв. „Алтернатива 2” која укључује у систем одбране 12 бунара појединачних капа- цитета од 40 l/s, где је потребно 7 дана да се обори ниво подземних вода. DRAGOLJUB BAJIĆ & DUŠAN POLOMČIĆ110 ...Dragoljub Bajić, Dušan Polomčić. "Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia" in Geološki anali Balkanskoga poluostrva, Belgrade : University of Belgrade - Faculty of mining and geology (2014). https://doi.org/10.2298/GABP1475103B
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Matematička fizika
Dragoslav Kuzmanović, Aleksandar Sedmak, Dobrica Nikolić, Ivan Obradović, Mihailo Lazarević, Nikola Mladenović (2021)Dragoslav Kuzmanović, Aleksandar Sedmak, Dobrica Nikolić, Ivan Obradović, Mihailo Lazarević, Nikola Mladenović. Matematička fizika, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet, 2021
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The Content of Toxic Metals in Agricultural Produce near a Coal Mine: Case Study KCB in Lazarevac, Serbia
Праћење и анализа концентрација токсичних метала (олово и кадмијум) у земљишту и усевима указују на то да пољопривредно земљиште у Србији углавном није загађено, а квалитет земљишта је природно добар. Због тога су таква земљишта погодна за органску пољопривреду. Сви уочени случајеви контаминације токсичним металима су само локалне природе, а резултат су ђубрива и пестицида, комуналног отпада, издувних гасова, оближњих производних објеката, топионица, рудника, јаловишта итд. Локације овог типа морају бити редовно прати и процењује статус земљишта и усева. ...Ana Koprivica, Čedomir Beljić, Boris Vakanjac, Vesna Ristić Vakanjac, Marina Čokorilo Ilić. "The Content of Toxic Metals in Agricultural Produce near a Coal Mine: Case Study KCB in Lazarevac, Serbia" in Minerals, MDPI AG (2018). https://doi.org/10.3390/min8040131
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The Importance of Detailed Groundwater Monitoring for Underground Structure in Karst (Case Study: HPP Pirot, Southeastern Serbia)
... Three observation wells, PP-1, PP-3 and PP-4, were deep-drilled along the tunnel and the screens installed within the tunnel zone. The HPP has a gravity dam and is usually operated 4–5 h/day. Surface water reservoir is located at an elevation of 612 m, occupies an area of 5.53 km and has a total volume ...
... tunnel. The campaign lasted for 108 days and included the months of September, October and November 2016. Quantitative and qualitative groundwater data were collected in two primary stages (Table 1), while the tunnel was in operation (Phases A and C) and out of operation (Phase B). Phase A illustrates ...
... the considered zones/sections (Figure 3). Even though PP-1 was the closest to the reservoir (corresponding to tunnel section 1 + 400 m), the measured data indicated a naturally very high water table, detected above the water level of the storage reservoir. The relatively small changes in groundwater level ...Marina Čokorilo Ilić, Ana Mladenović, Marina Ćuk, Igor Jemcov. "The Importance of Detailed Groundwater Monitoring for Underground Structure in Karst (Case Study: HPP Pirot, Southeastern Serbia)" in Water, MDPI AG (2019). https://doi.org/10.3390/w11030603
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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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Математика 2
Драган Станков (2020)Драган Станков. Математика 2, Београд : Универзитет у Београду, Рударско-геолошки факултет, 2020
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Projektovanje održavanja opreme površinskih kopova uglja
Slobodan Ivković, Dragan Ignjatović, Predrag Jovančić, Miloš Tanasijević. Projektovanje održavanja opreme površinskih kopova uglja, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet, 2008
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Strain partitioning in a large intracontinental strike-slip system accommodating backarc-convex orocline formation: The Circum-Moesian Fault System of the Carpatho-Balkanides
Nemanja Krstekanić, Liviu Matenco, Uroš Stojadinović, Ernst Willingshofer, Marinko Toljić, Daan Tamminga (2022)oroklini, raspodela deformacija, transkurentna kretanja, Karpato-balkanidi, Cirkum-mezijski rasedni sistem... Brun, J.P., Davy, P., Gautier, P., 2000. Continental collision, gravity spreading, and kinematics of Aegea and Anatolia. Tectonics 19 (2), 290–299. Márton, E., 2000. The Tisza megatectonic unit in the light of paleomagnetic data. Acta Geol. Hung. 43 (3), 329–343. Maţenco, L., 2017. Tectonics ...
... 39Ar ages. Tectonophysics 290, 111–135. Davy, P., Cobbold, P.R., 1988. Indentation tectonics in nature and experiment, 1. Experiments scaled for gravity. Bull. Geol. Inst. Univ. Uppsala, N.S. 14, 129–141. de Bruijn, H., Marković, Z., Wessels, W., Milivojević, M., van de Weerd, A.A., 2018. Rodent ...
... Ratschbacher, L., Merle, O., Davy, P., Cobbold, P., 1991a. Lateral extrusion in the eastern Alps, part 1: Boundary conditions and experiments scaled for gravity. Tectonics 10 (2), 245–256. Ratschbacher, L., Frisch, W., Linzer, H.-G., Merle, O., 1991b. Lateral extrusion in the eastern Alps, part 2: Structural ...Nemanja Krstekanić, Liviu Matenco, Uroš Stojadinović, Ernst Willingshofer, Marinko Toljić, Daan Tamminga. "Strain partitioning in a large intracontinental strike-slip system accommodating backarc-convex orocline formation: The Circum-Moesian Fault System of the Carpatho-Balkanides" in Global and Planetary Change, Elsevier BV (2022). https://doi.org/10.1016/j.gloplacha.2021.103714
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A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)
... “conceptualization phases”. In the first phase, the hydrogeologic model is created using collected data from prior investigations and, as such, it constitutes a basis for determining which data are “critical”. The second phase is elaboration, founded upon the outcomes of additional, more recent ...
... their interactions, and groundwater flow conditions. Based on geologic and hydrogeologic exploration, and analysis and synthesis of the collected data, the paper describes hydrogeologic modeling of the open-cast mine Tamnava – West Field. The software used in the research provides a portrayal of ...
... Groundwater Vistas Advanced, version 64-Bit 6.74 b.24 (Rumbaugh and Rumbaugh, 2011). The contours of the modeled layers were determined on the basis of data collected from numerous exploration boreholes, distributed across the study area. According to the “Report on Lignite Reserves at Tamnava - West Field ...Jelena Ratković, Dušan Polomčić, Dragoljub Bajić, Bojan Hajdin. "A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)" in Underground Mining Engineering no. 29, Belgrade : University of Belgrade - Faculty of mining and geology (2016): 43-54
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Comprehensive Profiling of Microbiologically Induced CaCO3 Precipitation by Ureolytic Bacillus Isolates from Alkaline Soils
Olja Šovljanski, Lato Pezo, Jovana Stanojev, Branimir Bajac, Sabina Kovač, Elvira Tóth, Ivan Ristić, Ana Tomić, Aleksandra Ranitović, Dragoljub Cvetković, Siniša Markov (2021)MICP process, kinetic study, calcite, vaterite, MALDI-TOF identification, Bacillus licheniformis, Sporosarcina pasteurii... (c) bacteria concentration (markers signify the experimental data; lines indicate predictive results). Microorganisms 2021, 9, 1691 10 of 20 The mentioned parameters are in function of incubation time, including both the experimental data and the plotted curves of kinetic models. Plotted curves for ...
... mathematical models had an insignificant lack of fit tests, which means that all the models represented the data satisfactorily. A high r2 is indicative that the variation was accounted for and that the data fitted satisfactorily to the proposed model. From the moment of inoculation, the Urea concentration ...
... Microorganisms 2021, 9, 1691 18 of 20 Institutional Review Board Statement: Not applicable. Informed Consent Statement: Not applicable. Data Availability Statement: The data presented in this study are available in cited references and on request from the corresponding authors. Acknowledgments: The authors ...Olja Šovljanski, Lato Pezo, Jovana Stanojev, Branimir Bajac, Sabina Kovač, Elvira Tóth, Ivan Ristić, Ana Tomić, Aleksandra Ranitović, Dragoljub Cvetković, Siniša Markov. "Comprehensive Profiling of Microbiologically Induced CaCO3 Precipitation by Ureolytic Bacillus Isolates from Alkaline Soils" in Microorganisms, MDPI AG (2021). https://doi.org/10.3390/microorganisms9081691