Претрага

Упит dcterms_subject_txt:Stratigraphy,Economic Geology,Geology,Fuel Technology

1156 items

  • Novi model za postizanje optimalne proizvodnje na naftnom polju Amal

    Elnori Elmabrouk Ali Elhaddad (2015-04-16)
    Doktorskom disertacijom analizirani su i proučavani problemi proizvodnje nafte iprimenjene metode za njihovo rešavanje na naftnom polju Amal. Ukratko jeprikazana proizvodnje nafte u Libiji, njene karakteristike i rezerve, da bi se videoznačaj ovog naftnog polja.Utvrđeno je da su na naftnom polju Amal ključni problemi koji prate procesproizvodnje taloženje parafina, pojava slojnog peska, neefikasan rad gasliftsistema, neefikasna desalinizacija nafte i ekološki problemi. Proizvodniproblemi, pojedinačno i više njih zajedno, na nekim bušotinama uzrokovali susmanjenje proizvodnje nafte od 40 do 75%. Zbog ...
    nafta, proizvodnja, optimizacija, Amal, Libija
    ... optimization using an integrated asset model,” in SPE International Petroleum Technology Conference (IPTC '07), pp. 1371–1380, Dubai, UAE. Hallet D. (2002) History of Libyan oil exploration and production, Petroleum Geology of Libya, 17-47. Hallibarton, (2012), Filter construction. Hallibarton, ...
    ... crystals in waxy crude oils cooled in quiescent conditions and under flow, Fuel 82, 127–135. Kasumu A.S., Arumugam S., Mehrotra A.K. (2013 ) Effect of cooling rate on the wax precipitation temperature of ‘‘waxy’’ mixtures, Fuel, 103, 1144–1147. 91 King G.E., Wildt P.J., O'Connell E. (2003) Sand ...
    ... Harouge (2011), About Harouge Oil Operations, Harouge Oil Operations, www.vebalibya.com. Harvie C. (2013) Oil and economic development: Libya in the post-Gaddafi era, Economic Modelling, Volume 32, 273-285. Hatcher W.B., Chilingarian G.V., Solum J.R. (1989) Chapter 6 Gravel Packing, Developments ...

  • Novi model za postizanje optimalne proizvodnje na naftnom polju Amal

    Elnori Elmabrouk Ali Elhaddad (2015-04-16)
    Doktorskom disertacijom analizirani su i proučavani problemi proizvodnje nafte iprimenjene metode za njihovo rešavanje na naftnom polju Amal. Ukratko jeprikazana proizvodnje nafte u Libiji, njene karakteristike i rezerve, da bi se videoznačaj ovog naftnog polja.Utvrđeno je da su na naftnom polju Amal ključni problemi koji prate procesproizvodnje taloženje parafina, pojava slojnog peska, neefikasan rad gasliftsistema, neefikasna desalinizacija nafte i ekološki problemi. Proizvodniproblemi, pojedinačno i više njih zajedno, na nekim bušotinama uzrokovali susmanjenje proizvodnje nafte od 40 do 75%. Zbog ...
    nafta, proizvodnja, optimizacija, Amal, Libija
    ... optimization using an integrated asset model,” in SPE International Petroleum Technology Conference (IPTC '07), pp. 1371–1380, Dubai, UAE. Hallet D. (2002) History of Libyan oil exploration and production, Petroleum Geology of Libya, 17-47. Hallibarton, (2012), Filter construction. Hallibarton, ...
    ... crystals in waxy crude oils cooled in quiescent conditions and under flow, Fuel 82, 127–135. Kasumu A.S., Arumugam S., Mehrotra A.K. (2013 ) Effect of cooling rate on the wax precipitation temperature of ‘‘waxy’’ mixtures, Fuel, 103, 1144–1147. 91 King G.E., Wildt P.J., O'Connell E. (2003) Sand ...
    ... Harouge (2011), About Harouge Oil Operations, Harouge Oil Operations, www.vebalibya.com. Harvie C. (2013) Oil and economic development: Libya in the post-Gaddafi era, Economic Modelling, Volume 32, 273-285. Hatcher W.B., Chilingarian G.V., Solum J.R. (1989) Chapter 6 Gravel Packing, Developments ...

  • Centar za hidrogeologiju karsta - 15 godina nauke i struke

    urednici Saša Milanović, Ljiljana Vasić, Zoran Stevanović, Branislav Petrović (2023)
    Centar za hidrogeologiju karsta
    ... of Science and Technology. During 2009, the team was strengthened by Ljiljana Vasić, at the time the secretary of the Department and at the same time a PhD student. In the following years, CKH members also become researchers funded by the Ministry of Education, Science and Technology Development - ...
    ... Faculty of Mining & Geology Department for Hydrogeology Centre for Karst Hydrogeology Belgrade, Serbia Za izdavača / For Publisher. Prof. Dr Biljana Abolmasov, Dekan Rudarsko-geološkog fakulteta, Univerzitet u Beogradu Prof. Dr Biljana Abolmasov, Dean of Faculty of Mining and Geology, University of ...
    ... as "excellent trainee" ofIRCK course V. Marinović 2016 Through the CFEPUS network, Branislav Petrović spent time at the Department of Geology (Applied Geology, Hydrogeology), Eotvos Lorand University (ELTE), Budapest, Hungary as a “short term student” in February 2016. He was invoWed in lecturing ...

  • The Importance of Detailed Groundwater Monitoring for Underground Structure in Karst (Case Study: HPP Pirot, Southeastern Serbia)

    Marina Čokorilo Ilić, Ana Mladenović, Marina Ćuk, Igor Jemcov (2019)
    Geography, Planning and Development,Aquatic Science,Biochemistry,Water Science and Technology
    ... 206-1; NSAI: Northwood, Dublin, Ireland, 2002. 14. California Department of Transportation; Materials Engineering and Testing Services; Cossosion Technology Branch. Corrosion Guidelines; The California Department of Transportation: Sacramento, CA, USA, 2003. 15. Al-Husseini, A.H.E. Study of potential ...
    ... 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 ...
    ... Karst (Case Study: HPP Pirot, Southeastern Serbia) Marina Čokorilo Ilić *, Ana Mladenović , Marina Ćuk and Igor Jemcov Faculty of Mining and Geology, University of Belgrade, 11000 Belgrade, Serbia; ana.mladenovic@rgf.bg.ac.rs (A.M.); marina.cuk@rgf.bg.ac.rs (M.Ć.); igor.jemcov@rgf.bg.ac.rs (I.J ...

  • 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

  • The Importance of Geotechnical Investigations for the Construction of Transfer Station „Prelići“ on Landfill in Cacak – Serbia

    Dragoslav Rakić, Irena Basarić, Jovana Janković, Tina Đurić (2019)
    For the purpose of the facilities construction within the transfer station „Prelici“ in Cacak, specific geotechnical investigations were carried out based on which the technological project with the facilities schedule was developed. Significant deviations in relation to the presented results were determined during earthworks, so the additional geotechnical investigation works were carried out. Since the new investigation works have determined a different cross section of the terrain, it was proposed to move the planned facilities which led to the ...
    landfill, geotechnical investigations, transfer station
    ... hazardous wastes, Association for water technology and sanitary engineering, Niska Banja, 294-298. Rakic, D. (2013). Constitutive relations of landfill municipal waste in Serbia (in Serbian), Ph.D. thesis, University of Belgrade, Faculty of Mininag and Geology, Department of Geotechnics,Belgrade, pp ...
    ... self-government, the way of waste treatment is being improved, a certain number of workers of lower social status are employed and a positive economic effect is achieved. From a citizen's perspective, the introduction of a quality organization into the waste management system, with the exception ...
    ... rivers or in their vicinity (Rakic, 2013). Until 1994 at the city landfill „Prelici“, waste was disposed completely uncontrolled both in terms of technology and in terms of waste origin. This uncontrolled disposal led to the fact that landfill was closed in a longer period of 1994. Transfer station ...

  • Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining

    Vladimir Čebašek, Veljko Rupar, Stevan Đenadić, Filip Miletić (2021)
    Geology,Geotechnical Engineering and Engineering Geology
    ... Coal is mined from the bottom of the lake connected to the Danube, and is the only mine with underwater coal exploitation in the world. A continuous technology performs the exploitation of overburden, gravel, and coal in this deposit. In accordance, mining of overburden and gravel is performed by using a ...
    ... Hemanta, H. Soil Mechanics Fundamentals and Applications; CRC Press: Boca Raton, FL, USA, 2015. 28. Verruijt, A. Soil Mechanics; Delft University of Technology: Delft, The Netherlands, 2010. 29. Terzaghi, K.; Peck, R.B.; Mesri, G. Soil Mechanics in Engineering Practice; John Wiley & Sons, Inc.: Hoboken, ...
    ... 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 Mathematical Learning Environment Based on Serbian Language Resources

    Radojičić Marija, Obradović Ivan, Stanković Ranka, Utvić Miloć, Kaplar Sebastijan (2018)
    In recent years, in line with ever growing usage of Information technology, the learning environments are changing. The amount of available learning materials in various forms has increased. These new environments demand comprehensive learning systems, which enable management of the learning corpus with special attention paid to relevant lexical resources. In this paper we present the concept of a Mathematical Learning Environment in Serbian (MLES), which is based on a corpus of mathematical materials and various lexical resources, enabling ...
    mathematical content, text processing, mathematical formulae
    ... University of Belgrade/Faculty of Mining and Geology, Belgrade, Serbia 3 University of Belgrade/Faculty of Philology, Belgrade, Serbia * marija.radojicic@uns.ac.rs Abstract: In recent years, in line with ever growing usage of Information technology, the learning environments are changing. The ...
    ... INTRODUCTION Rapid development of information technology, resulting in a growing number and availability of learning materials, had a strong impact on changes in learning environments. New learning environments are needed, requiring appropriate technology to facilitate access to and management ...
    ... resources, morphological e-dictionaries and WordNet of Serbian, which have been developed within the University of Belgrade Human Language Technology group for several decades [1], as well as a newly developed glossary, Termi. The system is aimed at providing for enrichment of these resources ...

  • Numerical Models of Debris Flows with Entrainment Analysis-Case Studies from the Republic of Serbia

    Jelka Krušić , Biljana Abolmasov, Miloš Marjanović (2021)
    The results of material entrainment analysis in RAMMS debris flow software, as well as numerical models of final flow heights for two case studies from the Republic of Serbia are presented. Both of debris flow cases started with initial sliding of huge volume block, prolonging to behave as flowing process. Results of the analysis showed that entrainment material affects final results of transportation model, runout distance, deposition area and volume of debris flow. In both cases entrainment volume is very ...
    tecišta, zadržavanje nanosa, RAMMS, validacija

  • 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
    ... “Mathematical Theory of Heat Phe- nomena Produced by Solar Radiation” was pub- lished hundred years ago. His theory affected geology and its different branches like stratigraphy, palaeoclimatology, tectonics etc. Recently a lot of scientific studies are focused on Astronomic Time Scale calibration for ...
    ... continental drift hypothesis and palaeo- climatology implications. Positive results of the implementation of the astronomic time scale to the Neo- gene stratigraphy initiated the application of this method within the Mesozoic, and lately also to the Paleozoic sediments. Milanković’s manuscript of astro- nomical ...
    ... on the GTS 2012 (GRADSTEIN et al., 2012) most of the Cenozoic era was directly calibrated with the ATS (Fig. 4). The International Commission on Stratigraphy encouraged with good results of Neogene ATS decided to complete a continuous ATS for the past 250 Ma, espe- cially because continuous ATS can restore ...

  • The Usage of Various Lexical Resources and Tools to Improve the Performance of Web Search Engines

    Krstev Cvetana, Stanković Ranka, Vitas Duško, Obradović Ivan (2008)
    In this paper we present how resources and tools developed within the Human Language Technology Group at the University of Belgrade can be used for tuning queries before submitting them to a web search engine. We argue that the selection of words chosen for a query, which are of paramount importance for the quality of results obtained by the query, can be substantially improved by using various lexical resources, such as morphological dictionaries and wordnets. These dictionaries enable semantic ...
    LR web services, MultiWord Expressions & Collocations, Information Extraction, Information Retrieval
    ... Proper Names. In Proc. of Second Language & Technology Conference, Poznań, Poland, April 21-23, Wydawnictwo Poznańskie Sp. z o.o, Poznań Tufiş, D. (ed.), (2004).: Special Issue on BalkaNet Project, Romanian Journal on Information Science and Technology. Bucureşti: Publishing house of the Romanian ...
    ... required by the preposition na. 7. In order to test our system we have used a log file of one of Serbian professional journals that deals with economic issues. The journal’s web site is supported by a search engine that enables its readers to retrieve information from journal’s archive. The used ...
    ... we have produced some new inflectional transducers as for the structure adjective+conjunction+adjective+noun in ekonomska i monetarna unija ‘economic and monetary union’ 8. The bilingual search – for instance, to the keyword štrajk and its Serbian synonym obustava rada a corresponding English ...

  • Hydrochemical changes and groundwater grouping data by multivariate statistical methods within one karst system: recharge–discharge zone (Eastern Serbia case study)

    Ljiljana Vasić, Dragana Živojinović, Vladana Rajaković-Ognjanović (2020)
    Geochemistry and Petrology

  • Indexing of textual databases based on lexical resources: A case study for Serbian

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović (2015)
    In this paper we describe an approach to improvement of information retrieval results for large textual databases by pre-indexing documents using bag-of-words and Named Entity Recognition. The approach was applied on a database of geological projects financed by the Republic of Serbia in the last half century. Each document within this database is described by metadata, consisting of several fields such as title, domain, keywords, abstract, geographical location and the like. A bag of words was produced from these ...
    ... and decision-making in the field of geology. Within the project a web portal3 was established that allows quick and easy access to geological data and information in the field of general geology, ex- ploration of mineral deposits, hydrogeology and engineering geology. Users of published information, ...
    ... they were inefficiently used be- cause of inadequate organization, limited access and general lack of readiness for the use of modern information technology. Consequently, the Ministry of Natural Resources and Environment Protec- tion, now the Ministry of Mining and Energy of the Republic of Serbia, ...
    ... H.: Introduction to Information Retrieval, vol. 1. Cambridge University Press (2008) 9. Martinović, M.: Transfer of Natural Language Processing Technology: Experi- ments, Possibilities and Limitations Case Study: English to Serbian. INFOtheca 9(1–2), 11a–21a (May 2008) 10. Maurel, D., Friburger, N ...

  • 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 ...
    ... 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 other terms, such as online education, virtual education, Internet-based education, and ...
    ... Journal of informatics and librarianship, Vol. XI, No.2, pp.3-19, 2010. [4] Teresa Martin-Blas, E-learning Platforms in Physics Education, in: Technology Education and Development, Aleksandar Lazinica and Carlos Calafate (eds.), InTech, pp.107-121, 2009. [5] Devedžić V., Semantic Web and Education ...

  • 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
    ... reliability, maintainability, supportability and the other constituent parts of availability are crucial and must be established and optimized for the economic success of selected machine or overall business systems [5]. The most usual consideration of the availability of machines or any other engineering ...
    ... 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 ...
    ... 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 ...

  • Definition of criteria and alternatives for choosing the optimal mining method deposits when applying multi: Criteria optimization, Belgrade, June 2024

    Sanja Bajić, Dragoljub Bajić, Branko Gluščević, Radmila Gaćina, Josip Išek (2024)
    multi-criteria decision-making, definition of criteria, underground exploitation

  • Hydrogeochemistry of Uranium in the Groundwaters of Serbia

    Marina Ćuk, Maja Todorović, Petar Papić, Jovan Kovačević, Zoran Nikić (2015)

  • Effectiveness Analysis of Different Bucket-wheel Excavators

    Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Miloš Tanasijević, Filip Miletić (2021)
    Coal production in open-pit lignite mines in the Republic of Serbia is performed with continuous work systems. In addition to coal production, the same systems are used for the exploitation of large quantities of overburden. According to the reliability concept, continuous systems are in linear connection. If the failure occurs in one part of the system, that will produce a downtime of the entire system. The initial and most important factor of continuous systems is the bucket-wheel excavator. It ...
    bucket-wheel excavator, open-pit coal mine, mining, multi-criteria decision methods

  • Increasing the Local Road Network Resilience from Natural Hazards in Municipalities in Serbia

    Biljana Abolmasov, Miloš Marjanović, Ranka Stanković, Uroš Đurić, Nikola Vulović (2024)
    lokalni putevi, prirodni hazardi, otpornost na klimatske promene, MaPLoRds

  • Development of non explosive fuel mixture for non-invasive procedures of obtaining the blocks of decorative stones

    Kričak Lazar, Petrović D., Negovanović Milanka, Janković Ivan, Zeković Dario (2011)