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2760 items

  • Spatial and temporal variability of precipitation in Serbia for the period 1961-2020

    Boško Milanović, Phillip Schuster, Milan Radovanović, Vesna Ristić Vakanjac, Shristoph Schneider (2017)
    У овом раду анализиране су месечне, сезонске и годишње суме падавина у Србији за период 1961–2010. Географска ширина, дужина и надморска висина 421 падавинске станице и карактеристике терена у њиховом блиском окружењу (нагиб и аспект терена у радијусу од 10 км око станице) коришћене су за развој регресионог модела на основу којег је прорачуната просторна расподела падавина. Приказан је просторни распоред годишњих, јунских (максималне вредности за скоро све станице) и фебруарских (минималне вредности за скоро све станице) падавина. Годишње ...
    padavine, distribucija godišnjih padavina, distribucija mesečnih padavina, Republika Srbija

  • Ventex: an expert system for mine ventilation systems analysis

    Nikola Lilić, Ranka Stanković, Ivan Obradović (1997)
    roblems relating to mine ventilation systems analysis are usually of a very complex nature. They involve the estimation of numerous interdependent parameters pertaining to the network status, ventilation status, ventilation system stability, air current losses, climate conditions, gas state, fire risk and dangerous dust pollution risk. The solution to these problems relies, to a great extent, on numerical methods. With the development of computer technology these methods were incorporated as numerical routes in software packages, such as the mine ...
    expert system, mine ventilation

  • Simulation of the operating regime and determination of the radius of influence of the groundwater sources „Parmenac“ and „Beljina“ (Čačak)

    Polomčić Dušan, Bajić Dragoljub, Močević Jelena, Špadijer Slavko, Drašković Dejan (2016)

  • Application of the PROMETHEE and VIKOR methods for selecting the most suitable carbon dioxide geological storage option

    Lola Tomić, Vesna Karović Maričić, Dušan Danilović, Branko Leković, Miroslav Crnogorac (2019)
    CO2 storage in geological formations is one of the leading solutions for mitigation of greenhouse gas emissions. Types of geological formations that can be used for CO2 storage, that are discussed in this paper are: depleted oil and gas reservoirs, saline aquifers and injection CO2 in partially depleted oil reservoirs for enhanced oil recovery (EOR–CO2 method). In order to select the most suitable geological storage of CO2, the ranking of these storage options was performed using two methods of ...
    Prometej, vikor, višekriterijumsko odlučivanje, geološko skladištenje

  • Процјена хазарда и ризика од клизишта за различите нивое просторног планирања у Републици Српској, БиХ

    Цвјетко С. Сандић (2022)
    Територија Републике Српске је у посљедних десетак година веома угрожена активирањем нових и реактивирањем старих клизишта. Она својим дјеловањем наносе огромне материјалне штете, па и људске жртве, те је неопходно озбиљније третирање и дјеловање у борби са овим природним хазардом. Чест проблем јесте одговорност, тј. надлежност институција из ове области и недостатак у законској регулативи која готово никако или само површно обрађује област хазарда и ризика од клизишта. Усљед непостојања праксе и усвојених методологија које су у примјени у свијету, циљ ...
    Kлизишта, склоност, хазард, ризик, процјена, просторно планирање, угроженост

  • Karst groundwater quantity assessment and sustainability: the approach appropriate for river basin management plans

    Veljko Marinović, Zoran Stevanović (2019)
    As a result of the fact that karstified rocks can accumulate large amounts of high-quality groundwater, karst aquifer is considered, throughout the world, one of the most important types of aquifers. Due to their high permeability, but also vulnerability to pollution, these precious groundwater resources need to be properly evaluated and protected. Taking into account heterogeneity and complexity of the karst environment, it is difficult to propose a uniform algorithm for managing karst groundwater, which causes the necessity to ...
    Upravljanje karstnim podzemnim vodama, Pritisci na kvantitet voda, Plan upravljanja vodnim resursima, Bosna i Hercegovina, Srbija

  • Classifying large strains from digital imagery: application to analogue models of lithosphere deformation

    Taco Broerse, Nemanja Krstekanić, Cor Kasbergen, Ernst Willingshofer (2021)
    ... toanalogue models of lithosphere deformation Taco Broerse1, Nemanja Krstekanic1,2, Cor Kasbergen3, and Ernst Willingshofer1 1Utrecht University, Faculty of Geosciences, Department of Earth Sciences, Utrecht, Netherlands (d.b.t.broerse@uu.nl) 2Department of Regional Geology, Faculty of Mining and Geology, University ...
    ... University of Belgrade, Belgrade, Serbia 3Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft, The Netherlands We are interested in reconstructing the time evolution of 2D plane deformation of analoguemodels of tectonic processes. Under relevant forcings, these models develop ...
    ... shortening and horizontalshearing (strike-slip) deformation or combinations of these. This method is based on a logarithmicmeasure of stretch and results agree well with the visual interpretation of structures that weobserve in our models. Thus, we provide tools with which the evolution of 2D tectonic ...

  • Побољшање ефикасности одлучивања у рударству применом линеарних оптимизационих модела

    Трајче Бошевски (2021)
    Одлучивање и управљање у рударству је захтеван и сложен задатак изложен ризицима. Конвенционални-искуствени приступи доношења одлука, у пракси често показују слабост која се огледа у недовољној поузданости и прецизности. Предмет истраживања докторске дисертације, под називом „Побољшање ефикасности одлучивања у рударству применом линеарних оптимизационих модела“ је да, сагледавањем научних метода линеарног програмирања, приступи формирању локацијских модела који би били засновани на анализи и прилагођавању постојећих и увођењу нових претпоставки за случајеве као што је експлоатација и потрошња кречњака. У дисертацији ...
    оптимизација, линеарни локацијски модел, линеарно програмирање, експлоатација и производња кречњака
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  • The Reciprocal Algebraic Integers Having Small House

    Dragan Stankov (2021)
    Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomials

  • Mikroelementi u kvartarnim sedimentima i lignitu Kostolačko-kovinskog ugljonosnog basena, istočna Srbija – odabrani primeri

    Bogoljub Vučković, Biljana Radovanović, Dragana Životić (2022)
    Sadržaj, distribucija i način pojavljivanja elemenata u tragovima (mikroelemenata), posebno potencijalno toksičnih i radioaktivnih elemenata u uglju, su od velikog značaja, posebno ako se koriste kao gorivo u termoelektranama (TE). Na osnovu sistematski prikupljenih podataka o elementima u tragovima u uglju, zemljištu i sedimentima, moguće je utvrditi stepen zagađenosti vazduha, zemljišta, vode, kao i negativan uticaj na zdravlje ljudi. Eksploatacija i istraživanje lignita u Kostolcu i Kovinu traje više od jednog veka, dok se sagorevanje lignita sa površinskih kopa ...
    mikroelementi, sedimenti, lignit, Kostolac

  • 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
    ... Bulletin of Geosciences, 84, 3: 465–496. Zuschin, M., Pervesler, P., 1996. Secondary hardground-communities in the northern Gulf of Trieste, Adriatic Sea. Senckenbergiana Maritima, 28: 53– 63. Zuschin, M., Stachowitsch, M., Pervesler, P., Kollmann, H., 1999. Structural features and taphonomic ...
    ... 2000. Badenian sediments of Vučjak hill (Ugljevik). In: Karamata S. i Janković S. (Eds.): Proceedings of the International Symposium Geology and Metallogeny of the Dinarides and the Vardar Zone. Academy of Sciences and Arts of the Republic of Srpska, Banja Luka and Serbian Sarajevo, 235-243. ...
    ... Stratigraphy and bivalve fauna from the Middle Miocene deposits of Opole. Transactions of the Moscow Institute of Geology and Exploitation, 27: 171-263. Moscow. (Ruski). Kidwell, S., M. 2002. The Quality of the fossil record: Implications for Evolutionary Analyses. Annual Rewiev of ecology and systematics ...

  • To what extent reactivated faults are (not) responsible for karst process: example from Serbian Carpatho-Balkanides?

    Ana Mladenović, Jelena Ćalić (2023)
    Carpatho-Balkanides represent part of the complex Dinaric – Carpatho – Balkan orogenic system, that geomorphologically dominates the central part of the Balkan Peninsula. The existence of this orogenic system is a result of closure of the Neotethys ocean and subsequent convergence of the Adriatic microplate and the Eurasian continent, that has been still active in the recent times. Such geodynamic characteristics conditioned complex tectonic structures, multiply reactivated during Late Cretaceous and Cenozoic times. The main aim of this work ...
    Carpatho-Balkanides, karst caves, reactivated faults, transpressional tectonics

  • Unraveling Innerworkings of Magmatic System Beneath the East Pacific Rise 9º50’N

    Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Felix Waldhauser, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Malden R. Nedimović, Juan Pablo Canales, Hélène D. Carton, Javier Escartin, John C. Mutter (2021)
    ... repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs Session: V009: Focused Observations of Ridge Near-Axis Remote and In Situ ...
    ... activity is readily observed and monitored for subaerial volcanoes; however, due to inaccessibility, little is known about the dynamics and physical properties of magmatic systems that govern eruptions. Some of the most active magmatic systems operate beneath portions of mid-ocean ridges (MOR), which ...
    ... 2Department of Marine Geology and Geophysics, Lamont-Doherty Earth Observatory, Columbia University; Palisades, NY, USA 3Shell Global Solutions International B.V.; Amsterdam, The Netherlands 4Now at Bureau de Recherches Géologiques et Minières – BRGM; Orléans, France 5Faculty of Mining and Geology, ...

  • English for Geology Students. 1

    Lidija Beko (2023)
    Engleski jezik
    ... roughly 40 and 60 degrees centigrade, and this, coupled with the high humidity and acidity of the atmosphere, mean it is necessary for anyone visiting the Cave to wear a protective “ice suit”. The Caves have been flooded for much oftheir history, and the unique conditions of the heat and the solute ...
    ... satellites. This has resulted in an increased ability to test and prove hypotheses, and also 12 Meteorite created new ways of studying the interactions of terrestrial cycles and systems on a truly global scale, leading to a new field of research known as Earth system science. As well as looking ...
    ... collected from Mars. Such explorations and studies allow scientists to construct a picture of the similarities and differenc- es between the Earth and other extraterrestrial bod- ies, much as doctors might build up a picture of genetic similarities and differences in a family. While many ...

  • Hydrodynamic analysis of radial collector well ageing at Belgrade well field

    Đorđije Božović, Dušan Polomčić, Dragoljub Bajić, Jelena Ratković (2019)
    The origin and effect of hydraulic resistances on the rate of ageing of radial collector wells are identified through numerical hydrodynamic analysis. The research includes hydrodynamic modeling of one such well with new laterals at Belgrade well field. The performance of the laterals is aggravated by rapid ageing. The change in the hydraulic parameters of the laterals during the first decade of operation is analyzed through simulations of the groundwater regime with realistically specified geometries and hydraulics of the ...
    Colmation, Incrustation, Groundwater modeling, MODFLOW–USG, Connected Linear Network Process

  • Examination of the possibility of obtaining pyrite concentrate from the flotation tailings of the Lece mine

    Predrag Lazić, Đurica Nikšić, Dejan Stojanović, Tamara Stojanović (2022)
    Рудник Леце је карактеристичан по томе што у флотацијским концентратима олова и цинка као корисну примену има злато и сребро. Практично од отварања рудника и флотације трају истраживања и борба за што боље технолошке показатеље на сва четири платива метала (олово, цинк, злато и сребро) посебно на злату. Овај рад представља допринос тој борби у циљу повећања искоришћења злата. Како је начин појављивања злата веома различит (самородно, са оловом и цинком, са пиритом и кварцом) то је и технолошка ...
    Флотација Леце, концентрат пирита, злато, сребро

  • In vitro and in silico study of the biological activity of tetradentate Schiff base copper(II) complexes with ethylenediamine-bridge

    Aleksandar Mijatović, Nevenka Gligorijević, Dušan Ćoćić, Snežana Spasić, Aleksandar Lolić, Sandra Aranđelović, Milan Nikolić, Rada Baošić (2023)
    The biological activity of six structurally similar tetradentate Schiff base copper(II) complexes, namely [Cu(ethylenediamine-bis-acetylacetonate)] (CuAA) and five derivatives where two methyl groups are replaced by phenyl, (CuPP), CF3 (CuTT) or by mixed groups CH3/CF3 (CuAT), Ph/CF3 (CuPT), and Ph/CH3 (CuAP) has been investigated. The set of antioxidant assays was performed, and the results were expressed as IC50 and EC50 values. The series of complexes showed interesting bioactivity and were investigated for the determination of antioxidant, antifungal, antimicrobial, and cytotoxic ...
    Inorganic Chemistry, Biochemistry

  • Application of MCDA in the determination of optimal block size for open-pit modelling and mine planning

    Petar Marković, Dejan Stevanović, Milica Pešić Georgiadis, Mirjana Banković (2021)
    The process of creating a geological block model as the basis for a further detailed design and planning of mining operations is a very responsible task. Errors made during this initial process are transferred to all other phases of the mining project. Certainly, one of the most important decisions for the modelling process is the choice of the appropriate size of the blocks that form the model itself. The determination of the optimal block size is not a simple ...
    dimenzije minibloka, višekriterijumska analiza, AHP, modeliranje ležišta, planiranje na površinskim kopovima

  • An update on the mineral-like Sr-containing transition metal arsenates

    Tamara Đorđević, Ljiljana Karanović (2021)
    We report on the crystal structures of three novel synthetic SrM-arsenates (M = Ni and Fe3+), isostructural or structurally related to the minerals from tsumcorite, carminite and brackebuschite groups. They were synthesised under mild hydrothermal conditions and further characterised using single-crystal X-ray diffraction (SXRD), scanning electron microscopy with energy dispersive spectroscopy (SEMEDS) and Raman spectroscopy. SXRD and SEM-EDS yielded formulae: (I) SrNi2(AsO4)2·2H2O, (II) Sr1.4Fe3+ 1.6(AsO4)2(OH)1.6 and (III) SrFe3+(AsO4)(AsO3OH). All three structures are built up of slightly distorted MO6 octahedra ...
    арсенати метала, кристална структура, дифракција рендгенских зрака на монокристалима, хидротермална синтеза, Раманова спектроскопија, релевантна једињења у животној средини, арсенeochemistry and Petrology

  • Tektonska evolucija severoistočnih Dinarida

    Nikola Ranđelović, Branislav Trivić, Nemanja Krstekanić, Bojan Kostić, Uroš Stojadinović (2022)
    ... extensional structures. This phase is associated with the intrusion of the Bukulja and Brajkovac granitoids and significant exhumation of previously buried segments of the Adriatic margin, as a result of the coeval opening of the Pannonian Basin. The ductile structural pattern related to this extensional ...
    ... 01st-04th 2022. Zbornik apstrakata Book of abstracts 221 TECTONIC EVOLUTION OF THE NORTH-EASTERN DINARIDES Nikola Ranđelović1, Branislav Trivić1, Nemanja Krstekanić1,2, Bojan Kostić1, Uroš Stojadinović1 1University of Belgrade, Faculty of Mining and Geology, Djušina 7, 11000 Belgrade, Serbia; ...
    ... phases in the Internal Dinarides and determine their controlling mechanisms, we conducted coupled field and micro-structural investigations in the wider area of the Bukulja Mts in central Serbia, which comprise parts of the Internal Dinarides’ Jadar-Kopaonik and Drina-Ivanjica composite units. ...