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Упит dcterms_subject_txt:geological exploration

224 items

  • Prioritization of strategic measures for strengthening the security of supply of the Serbian natural gas sector

    Boban Pavlović, Dejan Ivezić, Marija Živković (2020)
    To strengthen the security of supply of the Serbian gas sector, it is necessary to analyze the impact of planned strategic measures. The analysis involves the identification of the most influential threats to the security of natural gas supply and prioritization of the strategic measures for overcoming the consequences of threats. The proposed methodology is based on Fuzzy Analytic Hierarchy Process. The obtained weights for the identified threats and strategic measures are formed according to experts' judgments. The results ...
    Sigurnost snabdevanja, Donošenje odluka, Snabdevanje prirodnim gasom, Fazi AHP, Energetski indikatori

  • Managing mining project documentation using human language technology

    Aleksandra Tomašević, Ranka Stanković, Miloš Utvić, Ivan Obradović, Božo Kolonja (2018)
    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 documentation

  • Determination of Mechanical Properties of Altered Dacite by Laboratory Methods

    Veljko Rupar, Vladimir Čebašek, Vladimir Milisavljević, Dejan Stevanović, Nikola Živanović (2021)
    This paper presents a methodology for determining the uniaxial and triaxial compressive strength of heterogeneous material composed of dacite (D) and altered dacite (AD). A zone of gradual transition from altered dacite to dacite was observed in the rock mass. The mechanical properties of the rock material in that zone were determined by laboratory tests of composite samples that consisted of rock material discs. However, the functional dependence on the strength parameter alteration of the rock material (UCS, intact ...
    Geology, Geotechnical Engineering, Engineering Geology
    ... Precise determination of the boundary between altered dacite and dacite was impos- sible through analyzing the available geological documentation, core mapping from the exploration boreholes, and the open pit slopes. However, the importance of the genesis and properties of the rock material in this zone ...
    ... open pit slope consisting of dacite with microscopic images of the material: (a) altered dacite and (b) dacite. Exploration works were based primarily on exploratory drilling, geological mapping, and laboratory tests. During these studies, four boreholes were drilled, with a total drilling length of ...
    ... compare the results of previous study of heterogeneous rock materials [1,4,6]. The actual values of GSI can be determined by detailed geological cores mapping from exploration boreholes and the open pit slopes, which makes it possible to determine the real values of the rock mass strength parameters—altered ...

  • Zaštita podzemnih voda u različitim fazama istraživanja ležišta mineralnih sirovina

    Vladimir Živanović, Nebojša Atanacković (2022)
    Zaštita podzemnih voda, Primenjena geološka istraživanja, Ležišta mineralnih sirovina, Srbija

  • Approach to operational mine planning: Case study Tamnava West

    Dejan Stevanović, Mirjana Banković, Milica Pešić Georgiadis, Ranka Stanković (2014)
    ... coordinates to eliminate any obvious errors in location Only portion of mine is used in this study since it has sufficient number of geological exploration data, necessary for production planning and operational management of coal quality, Figure 2. Figure 2. Portion of the pit Tamnava ...
    ... based on correlation between Ash and LCV (Figure 4). Figure 4. Preliminary statistic analyses of Ash/LCV corelation 2.1.2. Geological Modeling The geological model for Tamnava West was developed using the Minex software package with the data provided by EPS. To provide a better structural ...
    ... complex and comprehensive problem which depends of many factors and elements of production system: - geological in situ data should be credible and with sufficient amount, - geological model should provide realistic interpretation of real structural a qualitative characteristics of deposit ...

  • 3D modeling and monitoring of karst system as a base for its evaluation and utilization: a case study from eastern Serbia

    Saša Milanović, Zoran Stevanović, Ljiljana Vasić, Vesna Ristić-Vakanjac (2013)
    Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • Phase relations and physical indicators of municipal waste from old landfills in Serbia

    Dragoslav R Rakić, Irena G Basarić Ikodinović, Jovana M Janković, Tina D Đurić (2021)
    Due to certain similarities of municipal waste and soil, usually for the determination of basic parameters of physical state, laboratory and field tests which are common in geotechnical investigations are used. It is often to construct an apparatus for special purpose to perform some specific laboratory and field tests. Therefore, different values of indicators of municipal waste physical state can be found in the literature. The basic reasons should be found in different definitions and methods that researchers use ...
    municipal waste, moisture content, unit weight, specific gravity, grain size distribution, porosityGeneral Computer Science
    ... in geotechnical investigations such as: direc field measurements (excavation of exploration pit at the landfili with measurement of volume and weight of excavated waste), measurements on samples from exploration boreholes, geodetic surveying of geometry and calculation of landfill volume with ...

  • Geodynamics of basins above subducted slabs: An integrated modelling study of tectonics, sedimentation, and magmatism in the Timok Magmatic Complex

    Uros Stojadinovic, Marinko Toljic, Branislav Trivic, Radoje Pantovic, Danica Sreckovic-Batocanin, Nemanja Krstekanic, Bojan Kostic, Milos Velojic, Jelena Stefanovic, Nikola Randjelovic, Maja Males (2024)
    Timok Magmatic Complex, Neotethys subduction, basin geodynamics, analogue modelling

  • Molecular and Isotope Composition of Biomarkers in Immature Oil Shale and its Liquid Pyrolysis Products (Open and Closed System)

    Gordana Gajica, Aleksandra Šajnovic, Jan Schwarzbauer, Aleksandar Kostić, Branimir Jovančićević, Ksenija Stojanović (2021)
    The molecular and isotopic composition of biomarkers in initial bitumen isolated from raw immature oil shale samples from the Lower Miocene Aleksinac Basin (Serbia) and liquid products (LPs) obtained by pyrolysis in open (OS) and closed systems (CS) are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in LPs is determined. The molecular composition of the LPs from the OS pyrolysis is very similar to those in initial bitumen, independently ...
    ... Nature 279, 405– 408. Peters, K.E., Walters, C.C., Moldowan, J.M., 2005. The Biomarker Guide, Vol. 2: Biomarkers and Isotopes in Petroleum Exploration and Earth History. Cambridge University Press, Cambridge. ...

  • Mineral Resources of Serbia: Environmental, Societal and Economic Challenges

    Vladimir Simić, Rade Jelenković, Dragana Životić (2019)
    ... and technical fields. LEGAL BASICS OF THE MINERAL INDUSTRY Law on Mining and Geological Exploration The legal basis for geological exploration and mining activity is the Law on Mining and Geological Exploration (o_MGE) No. 101/15. The Ministry of Mining and Energy is in charge of both activities ...
    ... ly important mineral deposits. The presence of mineral deposits is a direct function of the level of geological exploration, namely, it is a function of investments in geological exploration at all levels. Therefore, industry cannot operate only within the areas where there is no conflict of ...
    ... projects and reports of geological exploration and *Elaborates of Ore Reserves”. He has collaborated in 7 international scientific projects in the field of geology. The most important part of Dr. Rade Jelenkovic's scientific activity is related to the geological exploration of uranium and copper-gold ...

  • E-Connecting Balkan Languages

    Cvetana Krstev, Ranka Stanković, Duško Vitas, Svetla Koeva (2009)
    In this paper we present a versatile language processing tool that can be successfully used for many Balkan languages. This tool relies for its work on several sophisticated textual and lexical resources that were developed for most of Balkan languages. These resources are based on several de facto standards in natural language processing.
    Query expansion, e-dictionary, wordnet, proper name, aligned text
    ... g various heterogeneous lexical resources. Subsequently, many new features were added, particularly those that helped in the production and exploration of aligned texts on the basis of the incorporated lexical resources [9]. The new tool WS4QE (shortened for Work Station for Query Expansion) ...
    ... user can freely browse. One such visualization is represented in Figure 1. Browsing, however, is not a particularly successful form of text exploration. WS4LR module for aligned texts offers users to pose different forms of queries that can be automatically expanded by using various bilingual ...

  • Advantages and Disadvantages of a Parallel and Zigzag Method of Acquisition in Walking Mode in Magnetometric Archeological Research

    Mirko Petković, Vesna Cvetkov, Branislav Sretenović (2014)
    магнетометријска испитивања, цик-цак и паралелна аквизиција у ходајућем моду, линеарне аномалије, археологија
    ... coordinates measured using an absolute station. Also, if large areas are to be explored, it is desirable to divide them into a se- ries of smaller exploration polygons with margin lengths not exceeding 25 m. CONCLUSION The linear interpolation method is the most common choice of interpolative methods ...
    ... the Polytechnical University. Urquhart, T. 1988 Decorrugation of enhanced magnetic fi eld maps, 58th Annual International Meeting, Society of Exploration Geophysicists, Expanded Abstracts: 371-372. Vasiljević, I. 2013 Defi nisanje arheoloških objekata na lokalitetu Kremenite njive primenom geofi ...

  • Linear-motor plunger pump increases lifting efficiency

    Bojan Martinović, Dušan Đekić, Dušan Danilović, Pavel Isaev (2022)
    plunger, linear, motor, pumps

  • The state and perspective of the natural gas sector in Serbia

    Dejan Ivezić, Marija Živković, Dušan Danilović, Aleksandar Madžarević, Miloš Tanasijević (2016)
    The strategy of long-term energy development of Serbia identifies an increase of share of natural gas in final energy consumption as one of the main aims. Serbia has signed a strategic agreement with the Russian Federation on cooperation in the oil and gas sector, within which the project South Stream pipeline is planned to be realized. In addition, the Republic of Serbia has signed the Treaty that establishes the Energy Community and accepted the obligation to implement the Energy ...
    Consumption, natural gas, scenarios of development

  • A treatise about reliability in dating events of evolutionary history of brown trout Salmo cf. trutta (Actinopterygii) at Western Balkans: Impassable barriers, isolation of populations and assistance of geological timeframe

    Ana Marić, Danica Srećković Batoćanin, Dubravka Škraba Jurlina, Miloš Brkušanin, Jelena Karanović, Tamara Kanjuh, Vera Nikolić, Danilo Mrdak, Predrag Simonović (2023)
    Distribucija različitih haplotipova pastrmke u zavisnosti od geoloških dogadjaja.
    smeđa pastrmka, jadranska pastrmka, molekularni sat, evolucija, geološka istorija

  • Hydraulic impact of pressure transients from water conveyance tunnel on the complex hydrogeological system: A case study HPP

    Igor Jemcov, Maja Todorović, Aleksandar Jemcov, Marina Ćuk Đurović (2024)
    Tunel pod pritiskom, Unutrašnji pijezometri, Tranzijenti pritiska, Karstna izdan, Pukotinska izdan, Hidraulički odziv
    ... exhibited attenuated responses, indicating the presence of different hydraulic conductivity zones Conclusion This study represents the first exploration of the dynamic behavior of pore pressure, particularly water mass oscillations (WMO), within the rock mass under the operational conditions of ...
    ... of probes in the internal piezometers. • Theinteraction between tunnel-conveyed reservoir water and aquifers is documented. • Different geological media exhibit distinct responses to pressure transients. • Tunnel pressure transient analysis as a tool for hydrogeological characterization ...
    ... monitoring approach was employed. The internal piezometers with highly sensitive probes are distributed strategically along the tunnel in different geological environments. This approach involved monitoring of water pressure in the surrounding rock masses and observing the impact of hydraulic transients ...

  • A contribution to the knowledge of facial diversity of Badenian sediments in the Belgrade area

    Filip Anđelković, Dejan Radivojević (2018)
    baden, Beograd, facije, facijalna raznovrsnost, sedimenti
    ... l facies in the Belgrade area, Višnjica clays and  Konjarnik schlier, but they have limited exposure and were inaccessible at the time of field exploration.  The following localities have been visited: Kalemegdan, Tašmajdan, Višnjica, Rakovica. The focus was on  the poorly exposed „Leitha  limestone ...
    ... contribution to the knowledge of facial diversity of Badenian sediments in the Belgrade area | Filip Anđelković, Dejan Radivojević | 17th Serbian Geological Congress, Vrnjačka Banja, 17-20 maj 2018 | 2018 | | http://dr.rgf.bg.ac.rs/s/repo/item/0005445 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  232‐236  Врњачка Бања, 17‐20. мај 2018. Vrnjačka Banja, May 17‐20, 2018.    232      DO ...

  • The first record of nautiloids (Cenoceras intermedius) from the early Pliensbachian of Rgotina, (Getic nappe, eastern Serbia)

    Paul Țibuleac, Barbara V. Radulović, Marinko Toljić (2020)
    Cenoceras intermedius (J. Sowerby) is one of the most widespread species among the Early Jurassic nautiloid fauna and its geological range still controversial up to the present day. The specimen of Cenoceras intermedius from the sandy bioclastic limestones of Rgotina (Getic nappe of eastern Serbia), is a large half conch representing the phragmocone. Viewing our findings in light of previous results suggests the main morphological changes occurred during the ontogenetic evolution. The coiling starts with a round-square whorl section, ...
    Cephalopoda, Cenoceras intermedius, ontogenetic changes, geological range, northwestern Neo-Tethys, Pliensbachian

  • Regionalno-geološke karakteristike miocenskih sedimenata na prostoru severnog Banata

    Dejan N. Radivojević (2014-12-30)
    Predmet doktorske disertacije predstavljalo je rešavanje strukturno‐stratigrafskihodnosa miocenskih sedimenata na prostoru severnog Banata. U cilju regionalnogsagledavanja, korišćeni su svi raspoloživi geofizički i geološki podaci sa širegistražnog područja, odnosno iz celog Panonskog basena i susednog orogena. Osimklasičnih metoda primenjene su i savremene metode seizmostratigrafije,tektonostratigrafije i riftne sekvencione stratigrafije. Primenjene metode omogućilesu izradu modela progradacije ivice šelfa za ceo Panonski basen, modela uzajamnihveza između basena i geodinamičkog modela jugoistočnog oboda basena.Jezero Panon je većim delom zapunjeno prilivom sedimenata paleo‐Dunavom saseverozapada, odnosno ...
    Centralni Paratetis, Panonski basen, miocen, jezero Panon,seizmostratigrafija, sekvenciona stratigrafija, paleogeografija, geodinamika
    ... A review of the main results and their bearings on hydrocarbon exploration. In: Durand, B., Jolivet, L., Horváth, F. and Seranne, M., eds., The Mediterranean basins: Tertiary extension within the Alpine orogen, Geological Society (London) Special Publications, v. 156, p. 195–213. Horvath ...
    ... Basic geological map of Yugoslavia 1:100,000, Sheet Novi Sad, Geoinstitute, Belgrade, Serbia. Literatura 149 Čičulić, T. M., and M. Rakić, 1977, Explanatory booklet for sheet Novi Sad. (in Serbian), Basic geological map of Yugoslavia 1:100,000, Geological Institute ...
    ... Forschungsinstitut Sencke‐ nberg, v. 237, p. 47–67. Rose, P. R., 1992, Chance of success and its use in petroleum exploration. In: Steinmetz, R. (Ed.), The business of petroleum exploration. American Association of Petroleum Geologists Treatise of Petroleum Geology, Handbook of Petroleum ...

  • Improving efficiency of thermal power plants through mine coal quality planning and control

    Mirjana Banković, Dejan Stevanović, Milica Pešić, Aleksandra Tomašević, Ljiljana Kolonja (2018)
    Главни циљ контроле квалитета угља у рудницима лигнита је снабдевање термоелектрана угљем чији квалитет мора да се креће унутар одређених квалитативних ограничења. Карактеристике угља могу да утичу на ефикасност, поузданост и расположивост како котла тако и јединица за контролу емисије. У овом раду аутори су презентовали интегрисану симулацију рударског процеса као нови приступ у истраживању променљивости калоричне вредности угља приликом експлоатације комплексног лежишта лигнита. Резултати таквог приступа омогућавају драгоцен увид у перформансе континуалног рударског система у смислу контроле променљивости ...
    mine planning, variability of coal quality, simulation, coal blending