Претрага

Упит dcterms_subject_txt:Earth-Surface Processes,Geology

1138 items

  • The analysis of the geothermal energy capacity for power generation in Serbia

    Jana Stojković, Goran Marinković, Petar Papić, Mihailo Milivojević, Maja Todorović, Marina Ćuk (2013)
    Renewable Energy, Sustainability and the Environment
    ... of geothermal energy is radioactive decay that evolves within the planet some 6730 km under the surface. The Earth's crust is comparatively cold, except for the hot spots where magma is nearer the surface, and grows warmer with the depth. As to the utilization of the planet's heat, the efficiency of ...
    ... Solution of a mineral in ground- water, which mainly contains silicon, provides information about the temperature condition in rocks at which processes occur or have occurred in the past. Experiments have substantiated that solubility of a mineral depends on temperature; it is proportional with the ...
    ... приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital 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 ...

  • Развој хибридног модела за оптиматизацију завршне контуре одлагалишта у површинској експлоатацији лежишта минералних сировина

    Aлександар Додеровић (2024)
    Површинска експлоатација минералних сировина захтијева претходно откопавање значајних( милионских) количина јаловине, које је неопходно транспортовати до локације на којој ће сеона трајно одложити. Традиционални приступ избора локације и дизајна одлагалишта се карактерише парцијалним приступом, заснованом на анализи неколико водећих критеријума као и на личном искуству инжењера, често занемарујући синергетски ефекат осталих утицајних фактора Технолошке операције које се односе на манипулацију јаловином, међу којима предњачи транспорт, генеришу највећи дио трошкова у површинској експлоатацији. Такође, цјелокупан процес експлоатације додатно је ограничен ...
    оптимизације завршне контуре одлагалишта, хибридни модел, површинска експлоатација, генетски алгоритам

  • Dynamics of simple earthquake model with time delay and variation of friction strength

    Kostić Srđan, Vasović Nebojša, Franović Igor, Todorović Kristina (2013)

  • An aproach to Implementation of blended learning in a university setting

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Jelena Prodanović (2011)
    ... Belgrade, Faculty of Mining and Geology, {ivano;ranka;olja;jelena.prodanovic;veselin.ilic}@rgf.bg.ac.rs Abstract: In this paper we present an approach to introducing modern computer-mediated activities in course instruction at the Faculty of Mining and Geology - University of Belgrade, as a c ...
    ... prevailing. Hence the term Web-based learning or Web- based education is now also frequently encountered. This concept encompasses all aspects and processes of education that use WWW as a communication medium as well as its supporting technology [1]. Within the interaction of ICT and education many ...
    ... приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital 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 ...

  • A Fuzzy Expert Model for Availability Evaluation

    Dejan Ivezić, Miloš Tanasijević, Predrag Jovančić, Radiša Đurić (2019)
    Each technical system within itself carries the great potential danger of possible occurrence of failure and damages. Mining machines are characteristic by great investment values, costs of unplanned shutdowns, complex working conditions, and environment and workers hazards. Systematic monitoring of the mining machinery is of great importance for the management of the mining companies. Availability is the overall concept of quality of service. Includes information regard to operating state, an idle state, a standby state and shut down. The ...
    raspoloživost, ekspertski sistem, fazi teorija, buldozeri
    ... Availability of bulldozers operating on surface lignite mines of Electric Power Industry of Serbia, which operate as auxiliary machines, is analyzed. Three different bulldozers (Liebherr - Lib, Dressta – Drs, Caterpillar - Cat), at three different surface mines (Drmno – D, Tamnava West Field – T ...
    ... Fuzzy Expert Model for Availability Evaluation Dejan Ivezic Faculty of Mining and Geology University of Belgrade Belgrade, Serbia dejan.ivezic@rgf.bg.ac.rs Milos Tanasijevic Faculty of Mining and Geology University of Belgrade Belgrade, Serbia milos.tanasijevic@rgf.bg.ac.rs Radisa ...
    ... reliable sources of information. The other approach is to use the experience of machine operators and workers in maintenance and logistics processes. The second approach is simpler and faster, and if it is verified by measured values it can be accepted as quite reliable. The implementation ...

  • Self-Engineering: Possibilities for Maintenance Operations in the Mining Machines Industry

    Steven Manders, Milorad Pantelić, Vladimir Milisavljević, Alberto Martinetti (2021)
    Self-engineering is a relatively new branch of knowledge that aims to understand how systems could “autonomously” re-configure or repair themselves without the intervention of the operators. A direct field of application is within the maintenance spectrum. Having systems or machines capable of self-detecting or even self-repairing could represent a game-changer, in capital asset fields such as the mining industry in particular. This paper aims to investigate the possible benefits and challenges of self-engineering / self-maintenance concerning mining machines, specifically bucket-wheel ...
    self-engineering, self-maintenance, maintenance operations, mining industry, bucket-wheel excavator, gearbox revitalization

  • A hundred years of Milutin Milanković's climate change theory - geological implications

    Dejan Radivojević (2020)
    Миланковићева теорија циклуса објављена пре сто година је најважнија теорија у наукама које проучавају климу и имала је велики утицај на дисциплине које се баве Земљом. Ипак, његов рад је чекао више од педесет година да би добио потврду. Може се рећи да Миланковићев рад највећи утицај на геологију има у изради астрономске временске скале, подршци хипотези континенталног дрифта и палеоклиматологији. Добри резултати примене астрономске временске скале на неогене седименте иницирали су примену ове методе у мезозојским и у последње ...
    циклостратиграфија, астономска временска скала, геолошка временска скала, климатске промене, континентални дрифт
    ... Faculty of Mining and Geology, Department of Regional Geology, Kamenička 6, 11000 Belgrade, Serbia. E-mail: dejan.radivojevic@rgf.bg.ac.rs Abstract. Milanković’s cycles theory published hundred years ago is the most important theory in climate science and had great influence on Earth disci- plines. Ne ...
    ... thus connects the Paleozoic-Meso- zoic transition. Continental drift Even though Milanković and Wegener were not Earth scientists, they created two major scientific rev- olutions in geology which could be compared to the- ory of evolution or theory of relativity (PETRovIć & MARKovIć 2010). Milanković’s ...
    ... Sciences has embraced the model of Milanković’s Cycles. Earth climate changes - past and future Milanković’s cycles provided an understanding of the last ice age and are used for explanation of cli- mate changes of the geological past. The planet Earth had several episodes of glaciations from DEjan RaDiVojEVić ...

  • Classification of some significant occurences and mineral, thermal, and thermomineral water deposits of Bosnia and Herzegovina according to V.V. Ivanov classification

    Krunić Olivera, Jovanović Tomislav, Sorajić Stanko, Dokmanović Petar (2011)

  • Agates of the Lece Volcanic Complex (Serbia): Mineralogical and Geochemical Characteristics

    Zoran Miladinović, Vladimir Simić, Nenad Nikolić, Nataša Jović Orsini, Milena Rosić (2024)
    Agate veins and nodules occur in the Lece Volcanic Complex (Oligocene-Miocene) situated in the south of Serbia and occupying an area of 700 km2. This volcanic complex is composed predominantly of andesites, with sporadic occurrences of andesite-basalts, dacites and latites, and features agate formations that have been very little investigated. This study focuses on five selected agate occurrences within the Lece Volcanic Complex, employing optical microscopy, scanning electron microscopy (SEM), X-ray powder diffraction analysis, inductively coupled plasma mass spectrometry ...
    Lecki vulkanski kompleks, andeyit, kalcedon, kvarc, opal-CT, mikrostruktura, organska materija

  • Crystal structure of K3EuSi2O7

    Sabina Kovač, Predrag Dabić, Aleksandar Kremenović (2021)
    alkalni silikati elemenata retkih zemalja, kristalna struktura, sinteza metodom fluksa, rendgenska difrakcija na monokristalu
    ... them. Silicates containing the larger rare earth elements usually crystallize in a structure that contains the rare-earth cation in both a slightly distorted octahedral and an ideal trigonal prismatic coordination environment. Keywords: alkali rare-earth silicates; crystal structure; flux synthesis; ...
    ... (Received 18 February; Revised 15 March 2021; Accepted 31 March 2021) Abstract: As a part of the research of the flux technique for growing alkali rare- earth elements (REE) containing silicates, tripotassium europium disilicate, K3EuSi2O7, has been synthesized and characterized by single-crystal X-ray ...
    ... synthesis; single- crystal X-ray diffraction. INTRODUCTION Silicates containing rare-earth elements (REE silicates) are the subject of intense research in recent decades. Many studies were performed on REE silicates because of a wide range of optical and magnetic properties combined with high thermal ...

  • Age and microfacies of oceanic Upper Triassic radiolarite components from the Middle Jurassic ophiolitic mélange in the Zlatibor Mountains (Inner Dinarides, Serbia) and their provenance

    Hans-Juergen Gawlick, Nevenka Đerić, Sigrid Missoni, Nikita Bragin, Milan Sudar, Divna Jovanović (2017)
    Neo-Tethys, trench-like basins, synorogenic deposition, evolving thrust belt, Triassic palaeogeography
    ... at ?University of Belgrade, Faculty of Mining and Geology, Department of Palaeontology, Kamenička St. 6, P.O.Box 62, 11120 Belgrade-35, Serbia 3Geological Institute, Russian Academy of Sciences, Pyzhevsky 7, 119017 Moscow, Russia “Centre of Earth Sciences, University of Vienna, Althanstr. 14, 1090 ...
    ... 350—365 364 Festa A., Pini G.A., Dilek Y. & Codegone G. 2010a: Mćlanges and mćlange-forming. processes: a historical overview and ncw concepts. In: Dilek Y. (Ed.): Alpine Concept in Geology. 7nt. Geol. Rev. 52, 10–12, 1040—1105. Festa A., Pini G.A., Dilek Y., Codegone G., Vezzani L., Ghisetti ...
    ... of the Republic of Serbia, Project ON-176015 (NDJ, MS, DJ). The cooperation Leoben-Belgrade was sup- ported by the CEEPUS Network CIII-RO-0038 Earth-Science Studies in Central and South-Eastern Europe. The research work of N. Bragin was supported by Russian Governmental Assignment no. 0135 ...

  • Uticaj ekstremnih procesa na rizike površinske eksploatacije

    Natalija Pavlović, Tomislav Šubaranović, Dragan Ignjatović (2022)
    Nepredvidivi ekološki negativni slučajni procesi mogu uticati na geo-tehnički sistem pri površinskoj eksploataciji ležišta mineralnih sirovina, što u velikoj meri uvećava rizike i ugrožava realizaciju proizvodnje. Kvantitativna analiza sa proračunom verovatnoća pojava ovakvih ekstremnih događaja i procenom odgovarajućih ekonomskih posledica, posebno u uslovima globalnih klimatskih promena, omogućava definisanje rizika i optimizaciju parametara sistema površinske eksploatacije.

  • Еволуција напонског поља подручја Интерних Динарида у Србији током алпске орогенезе

    Ana S. Mladenović (2015-06-19)
    Циљ ове докторске дисертације био је реконструкција еволуције напонског пољаЗемљине коре у подручју Интерних Динарида у Србији током Алпске орогенезе.Истраживања за потребе решавања овог проблема су изведена у два дела. Првидео обухватао је анализу палеонапона на дефинисаном подручју истраживања,док се други део односио на анализу тренутно активног поља напона у овом делуБалканског полуострва. Истраживано подручје обухвата унутрашњи деоДинарског орогеног појаса, који се простире у централној и западној Србији. Собзиром на циљ истраживања, истраживано подручје је дефинисано тако даобухвата три ...
    Интерни Динариди, анализа палеонапона, фокални механизмиземљотреса, напонско поље, тектоно-магматски догађаји
    ... problems with commonly used criteria. Geology 16: 1108 – 1111 Paterson S.R., Tobisch O.T. 1992. Rates of processes in magmatic arcs: implications for the timing and nature of pluton emplacement and wall rock deformation. Journal of Structural Geology 14 (3): 291 – 300 Petford N., Cruden A ...
    ... 279 – 286 Poli G., Tommasini S., Halliday A.N. 1996. Trace elements and isotopic exchange during acid – basic magma interaction processes. Trans R Soc Edinburgh, Earth Sci 87: 225 – 232 Pomella H. 2014. Magnetic fabric of brittle fault rocks. Geophysical Research Abstracts (EGU). 16: 12505 Prelević ...
    ... Reconstructing the Alps – Carpathians – Dinarides as a key to understanding switches in subduction polarity, slab gaps and surface motion. International Journal of Earth Sciences 104 (1): 1 – 26 Heidbach O., Tingay M., Barth A., Reinecker J., Kurfeß D., Müller B. 2008. The World Stress Map ...

  • Еволуција напонског поља подручја Интерних Динарида у Србији током алпске орогенезе

    Ana S. Mladenović (2015-06-19)
    Циљ ове докторске дисертације био је реконструкција еволуције напонског пољаЗемљине коре у подручју Интерних Динарида у Србији током Алпске орогенезе.Истраживања за потребе решавања овог проблема су изведена у два дела. Првидео обухватао је анализу палеонапона на дефинисаном подручју истраживања,док се други део односио на анализу тренутно активног поља напона у овом делуБалканског полуострва. Истраживано подручје обухвата унутрашњи деоДинарског орогеног појаса, који се простире у централној и западној Србији. Собзиром на циљ истраживања, истраживано подручје је дефинисано тако даобухвата три ...
    Интерни Динариди, анализа палеонапона, фокални механизмиземљотреса, напонско поље, тектоно-магматски догађаји
    ... problems with commonly used criteria. Geology 16: 1108 – 1111 Paterson S.R., Tobisch O.T. 1992. Rates of processes in magmatic arcs: implications for the timing and nature of pluton emplacement and wall rock deformation. Journal of Structural Geology 14 (3): 291 – 300 Petford N., Cruden A ...
    ... 279 – 286 Poli G., Tommasini S., Halliday A.N. 1996. Trace elements and isotopic exchange during acid – basic magma interaction processes. Trans R Soc Edinburgh, Earth Sci 87: 225 – 232 Pomella H. 2014. Magnetic fabric of brittle fault rocks. Geophysical Research Abstracts (EGU). 16: 12505 Prelević ...
    ... Reconstructing the Alps – Carpathians – Dinarides as a key to understanding switches in subduction polarity, slab gaps and surface motion. International Journal of Earth Sciences 104 (1): 1 – 26 Heidbach O., Tingay M., Barth A., Reinecker J., Kurfeß D., Müller B. 2008. The World Stress Map ...

  • Mechanosynthesis and structural characterization of nanocrystalline Ce1–Y O2– (x=0.1–0.35) solid solutions

    Martin Fabián, Bratislav Antić, Vladimír Girman, Milica Vučinić-Vasić, Aleksandar Kremenović, Shigeru Suzuki, Horst Hahn, Vladimír Šepelák (2015)
    A series of nanostructuredfluorite-type Ce1–xYxO2–δ (0rxr0.35) solid solutions, prepared via highenergy milling of the CeO2/Y2O3mixtures, are investigated by XRD, HR-TEM, EDS and Raman spectroscopy. For thefirst time, complementary information on both the long-range and short-range structural features of mechanosynthesized Ce1–xYxO2–δ, obtained by Rietveld analysis of XRD data and Raman spectroscopy, is provided. The lattice parameters of the as-prepared solid solutions decrease with increasing yttrium content. Rietveld refinements of the XRD data reveal increase in microstrains in the host ceria ...
    Ceria, Yttrium, Solid solution, Mechanosynthesis, Oxygen vacancy, Nanocrystalline material

  • Interaction of sodium dodecylsulfate (SDS) with homoionic montmorillonites: adsorption isotherms and metal-ion release

    M. Ilic, J. Gonzalez, A. Pohlmeier, H. D. Narres, M. J. Schwuger (1996)
    The interaction of dodecylsulfate anions (DS−) with homoionic Ca-, Mg-, Ni-, Cu-, Cd-, Pb- and Fe-montmorillonites were investigated. Mg- and Cd-montmorillonite do not adsorb DS−, and an anion exchange at the edges of the clay mineral does not take place. Three different adsorption processes are identified on the other montmorillonites: i) Fe-montmorillonite is covered with amorphous iron hydroxide, and DS−-anions are bound at positively charged sites. ii) On Ca- and Pb-montmorillonite DS− is precipitated as Me(DS)2. iii) On Ni- ...
    Натријум додецилсулфат, адсорпциона преципитација, монтморилонит

  • Application of softwares for drilling and blasting

    Stefan Milanović, Lazar Kričak, Milanka Negovanović, Nikola Simić, Jovan Marković (2019)
    U današnje vreme softveri se sve više primenjuju u rudarstvu kroz eksploataciju mineralnih sirovina, projektovanje rudnika, u obavljanju različitih operacija na terenu i sl. Među softverima za rudarstvo, postoje softveri za specifične rudarske operacije, kao što su operacije bušenja i miniranja. Ovi procesi su veoma važni u eksploataciji čvrstih mineralnih sirovina, jer predstavljaju najjeftiniji i najefikasniji oblik fragmentacije stenske mase. Kroz rad, predstavljeni su neki od softvera u kombinaciji sa modernim tehnologijama, koje se koriste širom sveta i koje ...
    softver, moderne tehnologije, miniranje, bušenje, minsko polje

  • Understanding partitioning of deformation in highly arcuate orogenic systems: Inferences from the evolution of the Serbian Carpathians

    Nemanja Krstekanić, Liviu Matenco, Marinko Toljić, Oleg Mandić, Uroš Stojadinović, Ernst Willingshofer (2020)
    orogeneza, oroklini, višesmerna ekstenzija, transkurentna kretanja, Srpski Karpati
    ... collaboration between the Department of Earth Sciences at Utrecht University, the Netherlands and Faculty of Mining and Geology, University of Belgrade, Serbia during the PhD of Nemanja Krstekanić and is funded by the Netherlands Research Centre for Inte- grated Solid Earth Science (ISES) and the Ministry ...
    ... Internal Dinarides. Swiss J. Geosci. 112, 217–234. Răbăgia, T., Matenco, L., Cloetingh, S., 2011. The interplay between eustacy, tectonics and surface processes during the growth of a fault-related structure as derived from sequence stratigraphy: the Govora–Ocnele Mari antiform, South Carpathians. T ...
    ... Stratigrafija – prekambrijum i paleozoik. Faculty of Mining and Geology, Belgrade. Pinter, N., Grenerczy, G., Weber, J., Stein, S., Medak, D. (Eds.), 2005. The Adria Microplate: GPS Geodesy, Tectonics and Hazards (Nato Science Series: IV: Earth and Environmental Sciences). Springer, Dodrecht, the Netherlands ...

  • Novel Methods in Multiple Criteria Decision-Making Process (MCRAT and RAPS)—Application in the Mining Industry

    Katarina Urošević, Zoran Gligorić, Igor MIljanović, Čedomir Beljić, Miloš Gligorić (2021)
    Multiple criteria decision making (MCDM) is a supporting tool which is widely spread in different areas of science and industry. Many researchers have confirmed that MCDM methods can be useful for selecting the best solution in many different problems. In this paper, two novel methods are presented and applied on existing decision-making processes in the mining industry. The first method is multiple criteria ranking by alternative trace (MCRAT) and the second is ranking alternatives by perimeter similarity (RAPS). These ...
    višekriterijumsko odlučivanje, nove metode, rudarstvo, šeme miniranja

  • How active is recent tectonics in the central Balkans: Evidence from the Serbian Carpatho-Balkanides

    Ana Mladenović (2022)
    Since the Late Cretaceous, after closure of the Neotethys ocean, tectonic processes in the central Balkan Peninsula were mainly controlled by the mutual interaction of the Adriatic and the Eurasian plates, and tectonic units in-between. Most of the tectonic structures that have been active during Cenozoic times were inherited from previous tectonic stages under different tectonic regimes. Tectonic activity within the Carpatho-Balkan orogen in eastern Serbia since Miocene is conditioned by the existence of the rigid Moesian promontory east ...