Претрага

Упит dcterms_subject_txt:definition of criteria

2829 items

  • Crystallography and Surface Oxidation of Stoichiometric Arsenopyrite from Šumadija-Kopaonik Pb-Zn/Polymetallic Ore District (Serbia)

    Ivana Jelić, Aleksandar Pačevski, Aleksandar Kremenović, Aleš Šoster, Andreja Šestan, Janez Zavašnik (2023)
    The behaviour and stability of arsenopyrite largely depend on its crystal structure, but studies of crystallography and structural defects are scarce. For clarification, we investigated a series of natural arsenopyrite crystals from the polymetallic Pb-Zn-(±Cu,Ag,Au,Sb,Bi,W) Šumadija-Kopaonik ore district (Serbia) by powder X-ray diffraction (XRPD). Among them, samples from the Drenjak gold mineralisation showed near-stoichiometric FeAsS composition and were further investigated by conventional and high-resolution transmission electron microscopy methods. TEM revealed abundant planar crystallographic defects and epitaxial surface oxide layer ...
    Inorganic Chemistry, Condensed Matter Physics,General Materials Science, General Chemical Engineering, crystal structure, FeAsS, oxidation, TEM, XRPD
    ... conditions of the Creative Commons Attribution (CC BY) license (https:/ / creativecommons.org//licenses/by/ 4.0/). Faculty of Mining, and Geology, University of Belgrade, Đušina 7, 11000 Belgrade, Serbia Department of Geology, Faculty of Natural Sciences and Engineering, University of Ljubljana ...
    ... collection curated at the Faculty of Mining, and Geologyy in Belgrade, for the purposes of this study, Crystals 2023, 13, 278 3of11 14 samples from 7 localities of different types of mineralisation (Figure 1a,b) were selected, in which arsenopyrite is one of the most abundant sulphide phases. ...
    ... 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.rs crystals Article Crystallography and Surface Oxidation of Stoichiometric ...

  • Design of the Opencast Coal Mine Drmno Dewatering System

    Vladimir Pavlović, Dušan Polomčić, Tomislav Šubaranović (2014)
    Development of mining in the opencast mine Drmno from Kostolac basin in Serbia is carried out in the increasingly complex geological and hydro geological conditions with the decline of the coal seams to the alluvial part of Europe's largest river Danube. Greater depth and inflow of groundwater significantly increase costs for dewatering facilities construction with the requirement for optimizing of this more and more important surface mining process. Making decision on screen construction in the opencast mine with redesign ...
    dewatering system, groundwater, hydrodynamic model, dewatering wells, screen, reliability, environmental effects.

  • The influence of rainfall factors on soil resistance to erosion

    Nikola Živanović, Vukašin Rončević, Carla Ferreira, Milica Kašanin-Grubin, Stevan Ćorluka, Veljko Rupar, Vladimir Čebašek (2024)
    rainfall, rainfall factors, erosion, soil

  • The Late Devonian contraction along the Precaspian Basin north margin: Transpressional range building in the intracratonic domain

    Novak Novčić, Marinko Toljić (2023)
    The evolution of intraplate sedimentary basins located in the vicinity of an active convergent plate boundary is often controlled by the collisional dynamics of the adjacent orogen. The transfer of compression from the orogen to the platform's interior results in the formation of complex structural geometry and kinematics that often reactivate older crustal faults, focus far-field stresses and control the evolution of associated sedimentary basins. One place where this localisation can be optimally understood is the Precaspian Basin, situated ...
    Intrakratonske deformacije, transpresija, kosa kompresija, krustalni rasedi, intrakratonski transfer stresa, kontrakcioni blokovi

  • Influence of geological substrate on runoff formation, a case study: small river catchments in southeastern Serbia of similar size and with comparable pluviographic regimes

    Vesna Ristić Vakanjac, Veljko Marinović, Nikola Milovanović, Marina Čokorilo Ilić, Boris Vakanjac, Jugoslav Nikolić, Saša Bakrač (2022)
    We are witnessing climate change that is happening both, globally and, at the regionally - or local level. As a result of expected climate change in Southeast Europe, in the first place are the distributions of precipitation within the year (frequent extreme events are present) and then the increase in temperature, which already has a significant impact on evapotranspiration and runoff formed in a particular catchment area. In addition to climatic factors, the geological structure, i.e. the hydrogeological characteristics ...

  • Sitni, ali bitni: uloga sitnih sisara, herpetofaune i mekušaca u rekonstrukciji pleistocenskih paleosredina

    Katarina Bogićević, Draženko Nenadić, Dragana Đurić, Mihajlo Jovanović, Aleksandra Savković (2023)
    Fosilni ostaci životinja i biljaka imaju važnu ulogu u rekonstrukciji pleistocenskih paleosredina. U ovom radu opisan je značaj tri grupe životinja: sitnih sisara, herpetofaune I mekušaca. Mada je za rekonstrukciju važan sastav čitave asocijacije, nalasci pojedinih vrsta mogu biti dovoljno indikativni da otkriju tip staništa ili klimatske uslove. Posebnu teškoću pri rekonstrukciji paleosredina u Srbiji predstavlja činjenica da klimatske promene na Balkanskom poluostrvu nisu bile tako oštre kao u srednjoj i zapadnoj Evropi, pa ne postoji drastična razlika u ...
    ... Central European model of the sequence of individual species during periods of cooling and warming. In the cave deposits of Serbia of Late Pleistocene age, the herpetological associations arc dominated by species that, according to Bohme's model, appear in the warmer stages of the Quaternary climatic ...
    ... significance of Corbicu/a clams in Quaternary deposits of Serbia. 2. Kongres geologa Bosne ı Hercegovine, Zbornik radova 6, knjiga sažetaka, Laktaši 2-4. oktobar, 173-177. 7. Ratnikov, V.Yu., (1996): Methods of Paleogeographic reconstructions based up on fossil remains of amphibians and reptiles of the Late ...
    ... Introduction: Fossil remains of animals and plants play an important role in the reconstruction of Pleistocene palaeoenvironments. This paper describes the importance of three groups of animals: small mammals, herpetofauna and molluscs. Although the composition of the entire association is important ...

  • Novi pristup proučavanju tekstura minerala značajnih za istraživanje rudnih ležišta

    Aleksandar Pačevski (2022)
    ... the distance of only few micrometers, what especially emphasizes the importance of these measurement results, but also this approach of combining methods of microanalysis with textural studying of the minerals. This paper has been financed by the „Contract on realisation and financing of scientific ...
    ... ore, microanalysis, pyrite The complete determination of a mineral composition and textural characteristics of the ores is crucial for correct interpretation of the ore-forming processes and genesis of ore deposits in general. The study of ore textures is first done by macroscopic examination on ...
    ... y contributed to the understanding of origin of minerals and ore formation. It can be said that ore microscopy, as a separate discipline of the polarized light microcopy, reached its peak in the middle and second half of the XX century, where the contribution of Paul Ramdohr (1890-1985) to this ...

  • Clockwise rotation in the Serbian segment of the Vardar zone and in the Danubicum of Eastern Serbia - tetonic implication

    Vesna Lesić, Emo Marton, Vesna Cvetkov, Dragana Tomić (2015)

  • 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

  • Numerical simulation of the Late Jurassic closure of the Vardar Tethys

    Nikola Stanković, Vesna Cvetkov, Vladica Cvetković (2021)
    ... Attribution 4.0 License. Numerical simulation of the Late Jurassic closure of the VardarTethys Nikola Stanković, Vesna Cvetkov, and Vladica Cvetković University of Belgrade, Faculty of Mining and Geology, Serbia (nikola.stankovic@rgf.rs) We report updated results of our ongoing research on constraining geodynamic ...
    ... closure of the Vardar branch of the Tethys Ocean by means of applicationof numerical simulations (previous interim results reported in EGU2020-5919). The aim of our numerical study is to test the hypothesis that a single eastward subduction in theJurassic is a valid explanation for the occurrence of three ...
    ... 04:27:23 Numerical simulation of the Late Jurassic closure of the Vardar Tethys Nikola Stanković, Vesna Cvetkov, Vladica Cvetković Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Numerical simulation of the Late Jurassic closure of the Vardar Tethys | Nikola Stanković ...

  • 2D Numerical Simulation of Intraoceanic Subduction during the Upper Jurassic Closure of the Vardar Tethys

    Nikola Stanković, Vesna Cvetkov, Vladica Cvetković (2020)
    ... Attribution 4.0 License. Numerical simulation of the Late Jurassic closure of the VardarTethys Nikola Stanković, Vesna Cvetkov, and Vladica Cvetković University of Belgrade, Faculty of Mining and Geology, Serbia (nikola.stankovic@rgf.rs) We report updated results of our ongoing research on constraining geodynamic ...
    ... closure of the Vardar branch of the Tethys Ocean by means of applicationof numerical simulations (previous interim results reported in EGU2020-5919). The aim of our numerical study is to test the hypothesis that a single eastward subduction in theJurassic is a valid explanation for the occurrence of three ...
    ... 2D Numerical Simulation of Intraoceanic Subduction during the Upper Jurassic Closure of the Vardar Tethys Nikola Stanković, Vesna Cvetkov, Vladica Cvetković Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] 2D Numerical Simulation of Intraoceanic Subduction ...

  • The impact of temporal variability of groundwater levels on groundwater vulnerability maps in karst terrains – a case example of the Perućac spring catchment area

    Vladimir Živanović, Igor Jemcov, Nebojša Atanacković (2022)
    Groundwater vulnerability maps represent an essential tool for protecting karst groundwater resources. Vulnerability assessment is usually based on spatial evaluation of various parameters that affect the vulnerability degree and regulate the protection role of the unsaturated zone. Most of these parameters, like soil and geology conditions, are constant and do not change during the year or over several years. In contrast, some parameters, such as the groundwater level, depend on the variability of recharge conditions. By considering the variability ...
    karst groundwater vulnerability maps, parameter changes, Perućac spring, Serbia

  • Polyhedral characteristics of the cosalite-type crystal structures

    Sabina Kovač, Predrag Dabić, Aleksandar Kremenović, Aleksandar Pačevski, Ljiljana Karanović, Marko V. Rodić, Martina Tribus (2019)
    kristalna struktura, kozalit, poliedarske karakteristike

  • Late Triassic radiolarians from the Grivska formation, internal Dinarides, SW Serbia

    Nikita Bragin, Liubov Bragina, Nevenka Đerić, Nataša Gerzina-Spajić (2019)
    Paleontology, Stratigraphy, Economic Geology, Geochemistry and Petrology, Geology, Geophysics, Geotechnical Engineering and Engineering Geology
    ... Late Jurassic obduction Sediments of the passive margin of Adria (Jurassic) Sediments of the passive margin of Adria (Pz and T) Locality Lim The Grivska Formation was informally introduced by DIMITRIJEVIĆ: & · DIMITRIJEVIĆ (1987, 1991): the definition of this formation was not based on ...
    ... in the valley of Lim River near the mouth of Bistrica River (A, outcrops ofthe Triassic lime- stones on the left side of Lim River valley; B, outcrops of the Triassic limestones on the right side of Lim River valley; note intensive folding; C, thin-bedded limestones with single bed of thick-bedded ...
    ... Drina-Ivanjica Unit -——— Late Jurassic obduction Sediments of ths passive margin of Adria (Jurassc) Sediments of th» passive margin of Adria (Pz anc T) o -—— Pre-Senonian thrusting Fig. 1. a, Main tectonic units in the central part of Balkan Peninsula {modified after BRAGIN et al., 2018); b ...

  • The Use of the Omeka Semantic Platform for the Development of the University of Belgrade, Faculty of Mining and Geology Digital Repository

    Petar Popović, Mihailo Škorić, Biljana Rujević (2021)
    Under the regulations of the Ministry of Education, Science and technological Development, a digital repository based on the Omeka S data storage platform has been developed for the Faculty of Mining and Geology. The platform has been upgraded with the required modular extensions, Solr index and automatic OCR. Furthermore, document indexing and search have been fine-tuned with the aid of e-dictionaries of the Serbian language, which has brought about outstanding results in terms of usage facilitation and overall ...
    Дигитални репозиторијум, Омека, претрега дигиталних библиотека

  • 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
    ... Department of Mineralogy, Crystallography, Petrology and Geochemistry, University of Belgrade, Faculty of Mining and Geology and the Laboratory of X-ray diffraction at the Department of Physics, University of Novi Sad, Faculty of Sciences. OnLin e Fir st CRYSTAL STRUCTURE OF K3EuSi2O7 9 ...
    ... financial support from the Ministry of Education, Science and Technological Development of the Republic of Serbia (Grant No. III45007 and III45015); Ministry of Education, Science and Technological Development of the Republic of Serbia & Austria Federal Ministry of Education, Science and Research ...
    ... University of Belgrade, Faculty of Mining and Geology, Department of Mineralogy, Crystallography, Petrology and Geochemistry, Laboratory of Crystallography, Đušina 7, Belgrade 11000, Serbia (Received 18 February; Revised 15 March 2021; Accepted 31 March 2021) Abstract: As a part of the research of the ...

  • 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

  • A Lexical Approach to Acronyms and their Definitions

    Cvetana Krstev, Duško Vitas, Ranka Stanković (2015)
    In this paper we present a comprehensive approach to acronyms for Natural-Language Processing (NLP) of Serbian texts. The proposed procedure includes extraction of acronyms and their definitions that are usual Multi-Word Units (MWUs), shallow parsing of MWUs that enables MWU lemmatization and production of entries in morphological electronic dictionaries, both for MWU and acronyms, that are provided with grammatical, syntactic, semantic and domain information. This approach enables representation that reflects complex relations between acronyms and their definitions.
    ... matf.bg.ac.rs/ • A definition consists of a number of words in a se- quence that corresponds to the length of the associ- ated acronym; • The first of these words has to be in the upper-case; • Words can be interspersed with prepositions and/or conjunctions; • The number of selected words can be ...
    ... processing of proper names in texts. In Proceedings of the 7th conference on European chapter of the ACL. Morgan Kaufmann Publishers Inc. Wren, J. D., H. R. Garner, et al., 2002. Heuristics for identification of acronym-definition patterns within text: towards an automated construction of comprehensive ...
    ... patterns: beg1 definition between1 acronym end1 beg2 acronym between2 definition end2 where beg, between, and end represent strings that indi- cate that (probably) in a text an acronym/definition pair is detected. One set of these three strings is: acronym (skraćeno od definition ) (‘abbreviated’) ...

  • The final closure of the Vardar Ocean: paleomagnetic, AMS and structural results

    Emö Márton, Marinko Toljić, Vesna Lesić, Vesna Cvetkov (2020)
    ... be discussed in the context of the post-Oligocene CW rotation of the flanking areas and the general NE-SW orientation of thecompressional stress field outside of the zone. Acknowledgement. This work was financially supported by the National Development andInnovation Office of Hungary, project K 128625 ...
    ... closure of the Vardar Ocean: paleomagnetic, AMS andstructural results Emö Márton, Marinko Toljić, Vesna Lesić, and Vesna Cvetkov Mining and Geological Survey of Hungary, Paleomagnetic Laboratory, Budapest, Hungary (paleo@mbfsz.gov.hu) The Vardar zone divides units of African affinity from units of the ...
    ... opening of an oceanic domain during the Triassic and Jurassicfollowed by divergent simultaneous obduction of the oceanic litoshphere over the continentalunits in the Upper Jurassic. However, a stripe of the oceanic domain persisted till the Cretaceousand Paleogene convergence. The remnants of the last ...

  • Results of comprehensive monitoring activities on Umka landslide, Belgrade, Serbia

    Biljana Abolmasov, Uroš Đurić (2021)
    klizišta, monitoring
    ... CONFERENCE OF THE INTERNATIONAL ASSOCIATION FOR ENGINEERING GEOLOGY & THE ENVIRONMENT Leading to Innovative Engineering Geology Practices VOLUME 1 Extended Abstracts Proceedings Organised by the National Group of Greece of IAEG PROCEEDINGS OF 3RD EUROPEAN REGIONAL CONFERENCE OF IAEG/ ATHENS/ ...
    ... 2021 - 243 - Results of comprehensive monitoring activities on Umka landslide, Belgrade, Serbia Biljana Abolmasov1, Uroš Đurić2 1University of Belgrade, Faculty of Mining and Geology, Serbia, biljana.abolmasov@rgf.bg.ac.rs 2University of Belgrade, Faculty of Civil Engineering, Serbia, ...
    ... радовима запослених доступним у слободном 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 ...