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334 items

  • CEEPUS network CIII-RS-0038: More than two decades of supporting current educational and scientific trends in geosciences

    Kristina Šarić, Ana Fociro, Michael Wagreich, Hugo Ortner, Christoph von Hagke, Hans-Jürgen Gawlick, Eva Gerlšová, Elvir Babajić, Darko Tibljaš, Sibila Borojević Šoštarić, Miklos Kazmer, Jolanta Burda, Ela Machaniec, Adriana Trojanowska Olichwer, Ágnes Gál, Paul Tibuleac, Luka Gale, Ondej Nemec, Igor Duriška, Volker Höck, Corina Ionescu (2023)
    studentska i nastavnička mobilnost, Alpsko-karpatsko-balkansko-dinaridski geološki prostor, fundamentalna i primenjena geologija

  • Hyperpycnites within the Devonian-Carboniferous flysch of the Carpatho-Balkanides (Kostadinovica, eastern Serbia)

    Miloš Radonjić (2020)
    This study presents new discoveries of vascular plants and the trace fossil Dictyodora liebeana (GEINITZ) from the Devonian–Carboniferous Kučaj-Zvonce flysch of the Carpatho-Balkanides and the implications of this fossil association for its sedimentary setting. The occurrence of the described plant debris in a deep-marine environment indicates the presence of hyperpycnites within the siliciclastic turbidites exposed at the Kostadinovica locality. The sedimentological data and the characteristics of the fossil material support the proposed model in which the sediment was at ...
    Mississippian flora, Dictyodora liebeana (GEINITZ), hyperpycnites, Kučaj-Zvonce flysch, Carpatho-Balkanides
    ... is available at: www.dr.rgf.bg.ac.rs 2020 | 73/3 | 131–142 | 12 Figs. | www.geologia-croatica.hr Journal of the Croatian Geological Survey and the Croatian Geological Society 1. INTRODUCTION The Middle Devonian to Early Carboniferous turbiditic siliciclas- tic succession of the central part ...
    ... folding related to the faulting process. The amount of displacement along the Fss system could not be established with precision but is probably in the range of several metres and it does interrupt the superposition of the succession in its central part. The strike of several of the most prominent Fss ...
    ... 2002, 2004; KOVÁČEK & LEHOT- SKÝ, 2016; Poland, MUSZER, 2020), Carnic Alps (Austria and Italy, BAUCON & NETO DE CARVALHO, 2008). The strati- graphic range of Dictyodora liebeana (GEINITZ) is confined to the Early Carboniferous (UCHMAN, 2004). One of the arguments for the presence of hyperpycnites within ...

  • ‘Blue-’ and ‘Brown-speckled’ pottery from Qalhât, the Sultanate of Oman (13–16th centuries): Comparison with traditional Omani 19–20 century productions

    Liliana Gianni, Hélène Renel, Aleksandar Kremenović, Philippe Colomban (2020)
    Representative ‘Blue speckled’ (13–16th centuries) and ‘Brown speckled’ (13–21st century) wares recovered from the excavations in Qalhât or collected around Bahlâ city (Sultanate of Oman) were characterized by XRPD, SEM-EDS, Raman/optical microspectroscopy, and thermal expansion. Minerals present in the body (quartz, augite and albite as major phases, calcite, dolomite, rutile, anatase, phosphate, hematite and magnetite as minor phases) were identified by XRPD and/or Raman spectroscopy. SEM-EDXS microanalysis was performed on the glazes in order to compare their composition, especially ...
    Firing, Glaze, Traditional ceramics, Provenance studies, Augite

  • 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

  • Uniaxial compressive strength test before and after standard fire test on rock mass

    Stefan Mitrović, Goran Todorović, Bojan Kostić, Milica Mirković-Marjanović, Nikola Božović, Marija Krstić, Aleksandar Erić, Radovan Gospavić, Snežana Ilić, Aleksandar Kijanović (2022)
    ... V.C.", thermal power 296 kW manufactured by ECO FLAM. Two differential pressure transmitters type 6321 manufactured by TESTO (Germany), with a range of ± 100 Pa, inside furnace, were used to measure pressure. Inside furnace, temperature was measured in six places with a type K thermocouple. Measuring ...

  • Arsenic in Tap Water of Serbia´s South Pannonian Basin and Arsenic Risk Assessment

    Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)
    kvalitet podzemnih voda, arsen, analiza rizika, Panonski Basen
    ... result of complex geological and hydrogeochemical characteristics. In view of the size of the test area, it was divided into three districts: Banat, Bačka, and Srem. Based on the examples presented, the variation in arsenic concentrations in groundwater differs and depends on local geological and hydrogeochemical ...
    ... Groundwater of Srem District The Srem District of Vojvodina features groundwater of good quality, with arsenic concentrations falling within the allowed range and 77% of samples having arsenic concen- trations below 10 µg/L (Fig. 5). The most frequent causes of physicochemical non-compliance in Srem are concentra- ...
    ... the lowest percentage of arsenic concentrations exceeding MPC and relatively uniform concentrations, largely up to 10 µg/L. Conversely, the broadest range of concentrations was found in Central Banat and North Bačka. In Banat, 72% of the samples measured arsenic concentrations below 10 µg/L, with values ...

  • Integrative GHG Assessment in Oil and Gas Industry

    Aleksandar Mirković, Marija Živković, Stevan Đenadić, Darja Lubarda, Chinedu Anyanwa (2023)
    Reducing greenhouse gas emissions is one of the main targets of national strategies in European countries. As a main contributor to emissions, the energy sector is recognized as the most promising to apply measures and actions aimed to decrease GHG emissions. The Oil and Gas industry as a significant contributor to global greenhouse gas emissions is facing a growing need for estimating, mitigating, and reducing the impact of their operations on the atmosphere to stay competitive in a newly ...
    energetska tranzicija, gasovi staklene baste, industrija, nafta i gas
    ... from mobile combustion are most easily estimated by major transport activity. The source description shows thc diversity of mobile sources and the range of characteristics that affect emission factors. Procedure applied for nonstationary combustion is the same as thc onc for stationary processes undcr ...
    ... These sources provide a comprehensive and authoritative set of factors for estimating GHG emissions from O&G operations. The emission factors cover a range of activities and sources, including: upstrcam and downstream O&G operations, and are based on the latest scientific research and data. Factors used ...

  • Geochemical evaluation of dolostone deposits in Montenegro: Implications for potential industrial applications

    Darko Bozovic, Vladimir Simic, Dragan Radulovic, Slobodan Radusinovic, Vesna Matovic, Anja Terzic (2024)
    This study presents a unique model for assessing the dependability of continuous parts of combined systems in open-pit mining through the application of fuzzy logic. Continuous sub-systems as part of the combined system of coal exploitation in surface mines have the basic function of ensuring safe operation, high capacity with high reliability, and low costs. These subsystems are usually part of the thermal power plant’s coal supply system and ensure stable fuel supply. The model integrates various independent partial ...
    примарне сировине, минералогија, физичко-механичка својства, технолошка својства, наука о материјалима

  • Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal

    Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović (2018)
    glukoza, fruktoza, аktivni ugalj, hidrotermalni tretman, aktivacija hidroksida, teški metali, metilen plavo
    ... obtained with a diameter in the range of 3–4 µm. For the same hydroxides, for the fructose sample, the same trend was obtained (Figure 5d,e) and spherical, interconnected microparticles are also visible, but with differences in particle size and sphere diameters were in a range from ~0.5 to ~1.0 µm. However ...
    ... USA), equipped with Cu Kα 1,2 radiation source (a generator voltage of 40.0 kV and a generator current of 40.0 mA). All samples were recorded in the range of 10–90◦ 2θ, with a scanning step of 0.02◦ and at a scan rate of 2◦/min. Raman spectra of activated carbons were collected on a DXR Raman microscope ...
    ... (Agilent, Santa Clara, CA, USA). The two maximum wavelengths for MB were used, the first in the ultraviolet (UV) and the second one in the visible (VIS) range of electromagnetic spectrum. Thus, the absorption spectra were collected at 291 nm and 664 nm. 3. Results 3.1. Characterization 3.1.1. XRPD Analysis ...

  • Critical disorder and critical magnetic field of the nonequilibrium athermal random-field Ising model in thin systems

    Svetislav Mijatović, Dragutin Jovković, Sanja Janićević, Đorđe Spasojević (2019)
    Изингов модел, критично понашање, танки системи

  • Strategic Environmental Assessment in the Application of Preventive Protection for Wind Farm Noise—Case Study: Maestrale Ring Wind Farm

    Boško D. Josimović, Aleksandar Cvjetić, Božidar Manić (2021)
    Determining the spatial position of wind turbines is the initial and most important phase in the development of a wind farm project. In this sensitive phase, all potential problems that may arise in the later stages of project development should be prevented by means of spatial and urban planning instruments. This makes it possible to achieve maximum use of the potential of wind in a particular space and, thus, fulfil the technical and economic requirements of the project while ...
    Energija,energetski inženjering i elektroenergetska tehnologija,obnovljivi izvori energije, održivost i životna sredina,električni i elektronski inženjering,kontrola i optimizacija,inženjering
    ... IFC PS1 recommendations, i.e., EHS Guidelines [57]; 2. Modeling was performed for 113 wind turbines. In order for the modeling to cover as wide a range of wind turbines as possible, the types of wind turbines with the most unfavorable scenario were analyzed for the mathematical model, i.e., the types ...
    ... turbine are firstly characterized in the form of octave band frequency levels. A series of octave band attenuation factors are then calculated for a range of effects including geometric divergence, air absorption, reflecting obstacles, screening, vegetation and ground reflections. The octave band atten- ...
    ... evidence that infrasound generated long-term by the work of wind turbines could be potentially harmful to human health especially in the low frequency range, also argue that there is no evidence to the contrary. Therefore, conclusions regarding such effects cannot be strictly determined, especially if ...

  • Application of a Method for Intelligent Multi-Criteria Analysis of the Environmental Impact of Tailing Ponds in Northern Kosovo and Metohija

    Gordana Milentijević, Blagoje Nedeljković, Milena Lekić, Zoran Nikić, Ivica Ristović, Jelena Đokić (2016)
    flotacijska jalovišta, životna sredina, višekriterijumska analiza, ekologija, Trepča
    ... upstream from the deposit are determined only for lead in the range from 0.17 to 0.65 mg/L and iron from 0.15 to 4.12 mg/L. Downstream from the deposit the values above the maximum allowed concentrations are recorded for lead in the range from 0.20 to 0.58 mg/L, iron from 0.14 to 4.53 mg/L and copper ...
    ... direction, the top soil sampling was performed in the distances from the deposit of: 300 m, 600 m, and 800 m; in the southeastern direction, the distance range was 150 m, 250 m, 350 m and 1400 m. The analyses were conducted for the following heavy metals: Mo, Zr, Sr, Rb, Pb, Se, As, Hg, Zn, Cu, Mi, Co, Fe, ...
    ... According to the “2012 Minerals Yearbook, Mining and quarrying trends (advance release)” published by the U.S. Department of the Interior, U.S. Geological Survey, in the U.S. total waste from mining and ore processing in 2012 was around 5210 million tons [4]. It is interesting that in the previous report ...

  • Towards Sustainable Management of Transboundary Hungarian-Serbian Aquifer

    Zoran Stevanović, Peter Kozák, Milojko Lazić, Janos Szanyi, Dušan Polomčić, Balazs Kovács, Jozsef Török, Saša Milanović, Bojan Hajdin, Petar Papić (2011)
    ... Transboundary Hungarian-Serbian Aquifer 4.9.3 Groundwater Distribution and Use Systematic geological research in this region began at the end of the nineteenth century. The first data about the geological structure date came from the drilling of artesian wells. Later on, systematic searches for oil ...
    ... water Framework Directive (wFD; EC 2000/60) and EU Groundwater Daughter Directive targets. The benefits of this cross-border project are supposed to range from the national level to the very local one: 1) strengthening bilateral technical cooperation and enabling the exchange of information between the ...
    ... , about 407o of whom are on the Hungarian side of the border. The Pannonian basin (or the Great Hungarian Basin) represents a geographicai and geological entity that spreads over the territory ofseveral countries. The central | ,,, il i *ti':i !l:i!lr::l llr,:ir',. 'lii l:l' : i::,;!l ritl ::lli;' ...

  • Karst aquifer impact on the formation of surface runoff: case study of the Resava River catchment, Serbia

    Marina Mitrašinović, Vesna Ristić Vakanjac, Veljko Marinović, Saša Milanović, Ljiljana Vasić, Dušan Polomčić (2022)
    The paper compares the flow regimes of the Resava River at the gauging stations of the Manasija Monastery (upper course) and the town of Svilajnac (lower course). The hydrological analysis encompasses a multiyear period of monitoring (1982–2020). The water budget and baseflow index are assessed for the catchment areas monitored by the Svilajnac station (683 km2) and the Manasija Monastery station (358k m2), considering the overall monitoring period and characteristic years. The results indicate that the specific runoff in ...
    hydrogeological characteristics, water regime, water balance, karst aquifer, Resava catchment area
    ... efficients of correlation are indicative of the cor- respondcnce of the discharges recorded at the up- strcam and downstream gauging stations. They range from 0.878 in the wet year, 0.91 and 0.942 for the years, when the mean annual discharge was Š L Š . er\ o% H a s |y FNN| FEJ šoo[ - ...
    ... available at: www.dr.rgf.bg.ac.rs CIIHCAHHE HA BbJITAPCKOTO TEOJIOT MUECKO JIPV)KECTBO, roji. 83, kn. 3, 2022, c. 255258 REVIEW OF THE BULGARIAN GEOLOGICAL SOCIETY, vol. 83, part 3, 2022, p. 255258 HauwuonHajiHa koH(bepeHuuy c MexxiyHapojiHo yuacrHe „TFEOHAVKH 2022“ National Conference with Int ...

  • Arsenic in tape waters of the south Pannonian basin (Serbia) and arsenic risk assessment

    Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)
    ... result of complex geological and hydrogeochemical characteristics. In view of the size of the test area, it was divided into three districts: Banat, Bačka, and Srem. Based on the examples presented, the variation in arsenic concentrations in groundwater differs and depends on local geological and hydrogeochemical ...
    ... Groundwater of Srem District The Srem District of Vojvodina features groundwater of good quality, with arsenic concentrations falling within the allowed range and 77% of samples having arsenic concen- trations below 10 µg/L (Fig. 5). The most frequent causes of physicochemical non-compliance in Srem are concentra- ...
    ... the lowest percentage of arsenic concentrations exceeding MPC and relatively uniform concentrations, largely up to 10 µg/L. Conversely, the broadest range of concentrations was found in Central Banat and North Bačka. In Banat, 72% of the samples measured arsenic concentrations below 10 µg/L, with values ...

  • Substitution reactions of some novel sterically hindered monofunctional Pd(II) complexes

    Aleksandar Mijatović, Jovana Bogojeski, Biljana Petrović, Živadin D. Bugarčić (2011)
    Reakcije supstitucije monofunkcionalnih kompleksa [(TLtBu)PdCl]+ i [Pd(tpdm)Cl]+, gde je TLtBu = 2,6-bis[(1,3-di-terc-butilimidazolin-2-imino)metil]piridin i tpdm = terpiridindimetan, sa nukleofilima kao što su: tiourea, I−, Br−, NO2−, piridin i dimetil-sulfoksid (DMSO) proučavani su u 0,1 M vodenom rastvoru NaClO4 u prisustvu 10 mM NaCl. Reakcije su sprovedene na tri različite temperature (288, 298 i 308 K) korišćenjem tehnike zaustavljenog protoka na različitim temperaturama. Reakcije supstitucije su praćene pod uslovima pseudo prvog reda sa velikim viškom nukleofila. Dobijeni rezultati pokazuju da kompleks ...
    Materials Chemistry, Inorganic Chemistry, Physical and Theoretical Chemistry
    ... spectrophotometrically by following the change in absorbance at suitable wavelengths as a function of time. Spectral changes were recorded over the range from 200 to 400 nm to establish a suitable wavelength at which kinetic measurements could be performed. Substitution reactions of [(TLtBu)PdCl]+ and ...
    ... spectrophotometrically by following the change in absorbance at suitable wavelengths as a function of time. Spectral changes were recorded over the range from 200 to 400 nm to establish a suitable wavelength at which kinetic measurements could be performed. Substitution reactions of [(TL®")Pdcl]* and ...

  • Influence of paleoenvironmental conditions on distribution and relative abundance of saturated and aromatic hydrocarbons in sediments from the NW part of the Toplica basin, Serbia

    Nikola Burazer, Aleksandra Šajnović, Nebojša Vasić, Milica Kašanin-Grubin, Dragana Životić, João Graciano Mendonça Filho, Predrag Vulić, Branimir Jovančićević (2020)
    Stratigraphy,Economic Geology,Geology,Geophysics,Oceanography

  • INVENTS: A Hybrid Mine Ventilation Planning and Design System

    Lilić Nikola, Stanković Ranka, Obradović Ivan (2013)
    Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper we ...
    hybrid systems, mine ventilation, expert systems
    ... developed using an expert systems shell, the KAPPA-PC applications development system. KAPPA-PC is a MS Windows application which provides a wide range of tools for constructing and using applications by means of a high-level graphical environment which generates standard C code. In the KAPPA-PC system ...

  • INVENTS: a hybrid system for subsurface ventilation analysis

    Nikola Lilić, Ranka Stanković, Ivan Obradović (2000)
    Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper we ...
    ... developed using an expert systems shell, the KAPPA-PC applications development system. KAPPA-PC is a MS Windows application which provides a wide range of tools for constructing and using applications by means of a high-level graphical environment which generates standard C code. In the KAPPA-PC system ...

  • Why classical sequence stratigraphy doesn't work in Pannonian basin?

    Dejan Radivojević (2018)
    basen iza ostrvskog luka, detačment, miocen, Panonski basen, riftogeneza, sekvenciona stratigrafija
    ...  seismic transect (figure 1) with length of more than 260 km at which rift  sequence stratigraphy method is demonstrated is made to determine the range of base level change, as  well as  tectonic and  sedimentary  relationships. The  transect  covers entire  Serbian part of Pannonian  basin  from  ...
    ... факултета Универзитета у Београду [ДР РГФ] Why classical sequence stratigraphy doesn't work in Pannonian basin? | Dejan Radivojević | 17th Serbian Geological Congress, Vrnjačka Banja, 17-20 maj 2018 | 2018 | | http://dr.rgf.bg.ac.rs/s/repo/item/0005443 Дигитални репозиторијум Рударско-геолошког факултета ...
    ... access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs 17. Конгрес геолога Србије  17th Serbian Geological Congress  Књига апстраката  Book of Abstracts  174‐178  Врњачка Бања, 17‐20. мај 2018. Vrnjačka Banja, May 17‐20, 2018.    174      ZAŠT ...