Претрага

Упит dcterms_subject_txt:energy related emissions

518 items

  • Numerical modelling of the roughly simultaneous emplacement of two distinct ophiolite belts

    Nikola Stanković, Vesna Cvetkov, Vladica Cvetković (2024)

  • Landscapes and Landforms in the Toplica region (Southern Serbia)

    Aleksandar Valjarević, Natalija Batoćanin, Danica Srećković-Batoćanin, Tin Lukić (2022)
    U radu je prikazano 11 geomorfoloških oblika koji zaslužuju naziv objekata geonasledja. Rad razmatra genezu objekata, neophodnost geokonzervacije, tamo gde još nije pokrenuta, i položaj i distribuciua objekata unutar zona različitog turističkog interesovanja primenom metoda daljinske detekcije, terenskih osmatranja i geografskog informacionog sistema (GIS) .
    Toplica, GIS, analiza, geomorfološki objekat, objekat geonasledja, geneza, erozija

  • Reducing environmental impact caused by mining activities in limestone mines

    Radmila Gaćina, Bojan Dimitrijević (2022)
    Mining and its related activities have always resulted in changes in the environment and these changes can vary from one area to another. As a result of mining, several types of changes can be distinguished: destruction of land and existing vegetation, changes in terrain topography, modification in air quality, changes in surface and groundwater quality, as well as change geotechnical conditions of the rock. Environmental impact of mining have been a public concern. There is widespread global interest in mining ...
    uticaj na životnu sredinu, rudarstvo, degradirana područja, održivost, rekultivacija

  • 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
    ... in binary cycle plants The amount of geothermal energy in the Earth's interior will remain billion of years there, until the sun transforms into a gigantic red star. Unfortunately, this energy is not readily available. The source of geothermal energy is radioactive decay that evolves within the planet ...
    ... According to the Energy Information Agency, the mean efficiency of the geothermal power plants in the USA is about 16% [15]. Thermal energy available from geothermal sources is used in different forms, and the capacity of the equipment for use of the produced geothermal energy may be less than 100 ...
    ... the geothermal energy capacity for power generation in Serbia Jana Stojković, Goran Marinković, Petar Papić, Mihailo Milivojević, Maja Todorović, Marina Ćuk Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] The analysis of the geothermal energy capacity for power ...

  • A Model for Determining Fuzzy Evaluations of Partial Indicators of Availability for High-Capacity Continuous Systems at Coal Open Pits Using a Neuro-Fuzzy Inference System

    Miljan Gomilanović, Miloš Tanasijević, Saša Stepanović, Filip Miletić (2023)
    This paper presents a model for determining fuzzy evaluations of partial indicators of the availability of continuous systems at coal open pits using a neuro-fuzzy inference system. The system itself is a combination of fuzzy logic and artificial neural networks. The system availability is divided into partial indicators. By combining the fuzzy logic and artificial neural networks, a model is obtained that has the ability to learn and uses expert judgment for that learning. This paper deals with the ...
    системи, континуални системи експлоатације (роторни багер-транспортер-дробилично постројење), рударство, расположивост, меко рачунарство, фази логика, ANN, ANFIS

  • Knowledge and Rule-Based Diacritic Restoration in Serbian

    Cvetana Krstev, Ranka Stanković, Duško Vitas (2018)
    In this paper we present a procedure for the restoration of diacritics in Serbian texts written using the degraded Latin alphabet. The procedure relies on the comprehensive lexical resources for Serbian: the morphological electronic dictionaries, the Corpus of Contemporary Serbian and local grammars. Dictionaries are used to identify possible candidates for the restoration, while the dataobtainedfromSrpKorandlocalgrammarsassistsinmakingadecisionbetween several candidates in cases of ambiguity. The evaluation results reveal that,dependingonthetext,accuracyrangesfrom95.03%to99.36%,whilethe precision (average 98.93%) is always higher than the recall (average 94.94%).
    diacritic restoration, morphological dictionary, corpus, word n-grams, local grammars
    ... shows the relation of Import dependence concept with such concepts as Economy dependence, Energy dependence, Import substitution, Imported goods, and Import. The lower right form shows text entries for a related concept. The low right form of Fig. 1 describes text entries of Import substitution concept ...
    ... trial, and other issues (Dobrov and Loukachevitch, 2006); • Security Thesaurus is an extension of the RuThes thesaurus and includes terminology related to social, national and religious conflicts, extremism and terrorism, information security. The Table 1 contains quantitative characteristics of ...
    ... entries for zero-day vulnerability concept from Sociopolitical thesaurus Two other relations asymmetric and symmetric associations originate from the related term relation in information retrieval thesauri (NISO, 2005). The asymmetric association asc1 − asc2, connects two concepts that cannot be linked ...

  • Towards resolving Cretaceous to Miocene kinematics of the Adria-Europe contact zone in reconstructions: Inferences from a structural study in a critical Dinarides area

    Uroš Stojadinović, Nemanja Krstekanić, Liviu Matenco, Tamara Bogdanović (2022)
    One key element in the current debate analysing the Central Mediterranean evolution is the Cretaceous structure and kinematics of the present-day oroclinal bent contact between Adria-and Europe-derived continental units in the Dinarides, interpreted in different tectonic reconstructions as a subduction-related thrust system or a large-scale strike-slip fault zone. We provide a solution to the debate by a structural and kinematic study in a key area located in central Serbia along the Europe–Adria orogenic suture of the Sava Zone. The ...

  • Утицај реактивираних раседа на развој крашког процеса: примери из Карпато-балканида источне Србије

    Ана Младеновић (2022)
    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. The main aim of this research is to determine impact of ...
    Карпато-балкански ороген, реактивирани расед, спелеолошки објекат, крашки процес

  • Uticaj reaktiviranih raseda na razvoj kraškog procesa: primeri iz Karpato-balkanida istočne Srbije

    Ana Mladenović (2022)
    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. The main aim of this research is ...
    Karpato-balkanski orogen, reaktivirani rased, speleološki objekat, kraški proces

  • Испитивање магнетске сусцептибилности прашине антропогеног порекла

    Дубравка Новичић, Весна Цветков, Весна Дамњановић (2019)
    ... u udaljenim područjima daleko od laboratorija. Literatura [1] Pacyna, J. M., Pacyna, E. G. (2001). An assessment of global and regional emissions of trace metals to the atmosphere from anthropogenic sources worldwide. Environmental Reviews, 9, 269-298. [2] Márton, E., Lesić, V., et al ...

  • Razvoj ARCGIS geobaze površinskog kopa korišćenjem UML CASE alata

    Aleksandra Tomašević, Ljiljana Kolonja, Ivan Obradović, Ranka Stanković, Olivera Kitanović (2012)
    ... This paper has been realized in the scope of the project “Improving the technology of open pit exploitation of lignite with the goal of enhancing energy efficiency, work safety and security” (Unapređenje tehnologije površinske eksploatacije lignita u cilju povećanja energetske efikasnosti, sigurnosti ...
    ... of Mining and Geology in Belgrade for development of GIS applications. Thematic classes presented in this paper encompass only a part of the data related to mine production, and pertain to an important segment that demands visual representation. More precisely, the paper tackles exploration works, sample ...
    ... e Leziste {GeometryType = EsriGeometryPolygon} Figure 2. Class diagram IstrazniProstor Classes Analiza, Litologija and Stratigrafija are related to the class Busotina by a binary “one- to-many” association. This means that for each borehole results of the analyses, as well as lithologic and ...

  • Flyrock induced by blasting in surface mining

    Milanka Negovanović, Lazar Kričak, Snežana Ignjatović, Stefan Milanović, Jovan Marković, Nikola Simić, Rade Šarac (2022)
    Miniranje predstavlja i dalje najefikasniji i najjeftiniji način eksploatacije velikih količina čvrstih mineralnih sirovina na površinskim kopovima. Energija eksplozije se koristi za fragmentaciju čvrste stenske mase do zahtevane granulacije. Pored pozitivnih efekata miniranja, postoje i određeni neželjeni efekti svakog procesa miniranja koji se mogu javiti, a to su: potresi tla, razletanje komada stene, vazdušni udari, otrovni i zagušljivi gasovi i prašina. Razletanje komada stene je nekontrolisano izbacivanje fragmenata odminirane stenske mase i predstavlja jedan od glavnih izvora materijalne štete ...
    razletanje, bušenje, miniranje, površinska eksploatacija, bezbednost, nesreća

  • Project REASONING: Characterization and technological procedures for recycling and reusing of the rudnik mine flotation tailings

    Vesna Cvetkov, Vladimir Simić, Stefan Petrović, Filip Arnaut, Milena Kostović, Dragan Radulović, Jovica Stojanović, Vladimir Jovanović, Dejan Todorović, Nina Nikolić, Jelena Senćanski, Grozdanka Bogdanović, Dragana Marilović (2024)

  • Improving Document Retrieval in Large Domain Specific Textual Databases Using Lexical Resources

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović (2017)
    Large collections of textual documents represent an example of big data that requires the solution of three basic problems: the representation of documents, the representation of information needs and the matching of the two representations. This paper outlines the introduction of document indexing as a possible solution to document representation. Documents within a large textual database developed for geological projects in the Republic of Serbia for many years were indexed using methods developed within digital humanities: bag-of-words and named ...
    ... 55 queries were obtained, as illustrated in Fig. 6 for the query “geothermal energy in spas”. It should be noted that results in this section are presented and Fig. 6. Precision-recall curve for the query “geothermal energy in spas”. A u t h o r P r o o f Improving Document Retrieval in Large ...
    ... forthcoming years [23]. As a result of this analysis, the then Ministry of Natural Resources and Environment Protection (now Ministry of Mining and Energy of the Republic of Serbia), launched in 2004 the project of the Geological Information System of Serbia (GeolISS ), which has been developed in several ...
    ... ugljevi of ugalj ‘coal’ that is specific to the mining terminology. The graph presented in Fig. 12 gives average precisions for one query (“geothermal energy in spas”). The comparison of current system and new indexing methods shows that the InQuery method is superior for majority of queries over current ...

  • Present Situation and Alternative Water Supply Solutions for Northern Vojvodina (Serbia)

    Bojan Hajdin, Vesna Ristić-Vakanjac, Dušan Polomčić (2020)
    The northern part of the Autonomous Province of Vojvodina is situated in the central and southeastern sectors of the Pannonian Basin. Drinking water supply is provided by groundwater abstraction from depths of 60 to 200 m. The quality of that water is poor, especially due to high concentrations of arsenic which most water supply systems do not remove. Current planning documents call for the construction of large regional water supply schemes on the banks of the Danube and Tisa ...
    podzemne vode, regionalni sistem vodosnabdevanja, arsen

  • A Knowledge-Based Approach to Mine Ventilation Planning in Yugoslav Mining Practice

    Nikola Lilić, Ivan Obradović, Ranka Stanković (2002)
    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 ...
    ... global, integrated database of INVENTS. SimVent’s data services thus have two classes: dbUtility, containing functions related to the global database and dbSimVent, with functions related to data specific for SimVent. In view of the complexity of the INVENTS system’s global model data structure, which ...
    ... planning and design process is the establishment of a basic or initial ventilation network and an appro- priate database containing all necessary data related to this network. The design process is followed by the implementation of the mine ventilation system as well as its maintenance, aimed at securing ...
    ... ventilation system linear scheme, graphical presentation of results and communication with other modules in the INVENTS hybrid system. The classes related to user services communicate with classes at the business service level by sending messages that initiate the execution of specific applications. ...

  • A new copper(II) arsenate, Na2Cu3(AsO3OH)4·4H2O containing discrete [Cu3O12]18− units: Synthesis, crystal structure and magnetic properties

    Tamara Đorđević, Ljiljana Karanović, Zvonko Jagličić (2018)
    Single crystals of the new disodium tricopper(II) tetrakis(hydrogenarsenate(V)) tetrahydrate, Na2Cu3(AsO3OH)4·4H2O were grown under hydrothermal conditions. The compound was characterized by room-temperature single-crystal X-ray diffraction, SEM-EDS analysis, Raman spectroscopy and magnetic susceptibility measurements. Na2Cu3(AsO3OH)4·4H2O represents a new layered structure-type [space group P21/c, a = 8.7089(17), b = 9.7452(19), c = 9.3353(19) Å, β = 92.63(3)°, V = 791.4(3) Å3, Z = 4]. The layers are normal to [100] and are composed of the isolated Cu3O12 units interconnected by AsO3OH coordination ...
    Na2Cu3(AsO3OH)4•4H2O, хидротермална синтеза, кристална структура, хидрирани хидрокси-арсенати, магнетна својства

  • Analysis of the correlation between modified secondary and primary compression index on the example of old municipal waste in Serbia

    Dragoslav Rakić, Irena Basarić Ikodinović, Jovana Janković, Tina Đurić (2022)
    The paper presents the results related to the determination of the index of primary and maximum and minimum indices of secondary compression, i.e. modified primary and secondary compression indices (Cc, Cc', C'min, C'max), obtained by laboratory testing of artificially prepared municipal waste samples (three series of 9 samples in total) in an oedometer apparatus with a diameter of 20 cm. Old municipal waste was used, which was taken from two landfills in Serbia, one that is ...
    municipal solid waste, secondary compression index, ratio of modified secondary and primary compression index

  • The use of biological markers in determination of origin and type of organic matter in the Tisza river sediments

    Snežana Štrbac, Gordana Gajica, Aleksandra Šajnović, Nebojša Vasić, Ksenija Stojanović, Branimir Jovančićević (2013)
    The objective of the study was to determine the origin and type of organic matter (OM) of the Tisza recent sediments along the distance of 153 km through the territory of Serbia. For this purpose group organic-geochemical parameters and biomarker compositions were used. All samples contain approximately same amount of OM, which was deposited under uniform, slightly reducing conditions. Based on the distribution of n-alkanes, the origin and type of OM could not be precisely estimated. However, n-alkane patterns ...
    sediments, Tisza River, organic matter, biomarkers, oil pollutants
    ... of terpanes and steranes and the values of the biomarker parameters in Tisza sediments, it is supposed that the oil pollution generally could be related to heavy fuel oil from tankers, due to intense river transport and, to lower extent, to crude oils from the Elemir and Rusanda oil fields. Keywords: ...
    ... concentrations of n-alkanes C17 and C18 (parameters Pr/n-C17 and Ph/n- -C18; Table III). However, this result is not useful, because it could be related to both singenetic organic matter and oil pollutants.14,16 ____________________________________________________________________________________ ...
    ... concluded that, in addition to singenetic organic substance, the analyzed samples contained organic matter of anthropogenic origin, which could be related to crude oil. Furthermore, the identical distributions of these biological markers in all samples _____________________________________________ ...

  • Anisotropic grossular–andradite garnets: Evidence of two stage skarn evolution from Rudnik, Central Serbia

    Bojan Kostić, Danica Srećković-Batoćanin, Petyo Filipov, Pavle Tančić, Kristijan Sokol (2021)
    This paper presents LA-ICP-MS data for garnets from the Rudnik skarn deposit (Serbia), which range from Grs45–58Adr40–52Alm2–3 in the core and Adr70–97Grs2–29Sps1 in the rim displaying anisotropy and zoning. In spite of wide compositional variations the garnets near the end-member of andradite (Adr > 90) are generally isotropic. Fe-rich rims exhibit LREE depletion and flat HREE pattern with weak negative Eu anomaly, including higher As and W contents. On the other side, the Fe-poorer core shows flat REE pattern ...
    grandite, garnets, skarn, Rudnik
    ... The first stage and period of garnet growth is probably buffered by mineral dissolution and reactions in the country rock. The second stage is related to hydrothermal activity when W and Fe were brought into the system probably by a boiling process in the volcanic event in the late Oligocene 23 ...
    ... (Stojanović et al. 2018). Within the south part of the Rudnik skarn deposit, lateral zoning in contact aureole is weakly displayed and closely related to the protolith. It is represented by quartz, epidote, zoisite, chlo- rite, calcite, and minerals from the actinolite–tremolite group, while in ...
    ... ng local mineral/rock assemblage (Smith et al. 2004). Oscillatory zoning in garnets is interpreted as an early retrograde shock-induced feature related to high fluid pressure or as a result of externally induced local strain (e.g. Jamtveit et al. 1993; Ciobanu & Cook 2004). Further, according to ...