Претрага
422 items
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Valorization of non-balanced coal reserves in Serbia for underground coal gasification
David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić (2019)In the name of a better and safer energy future, it is our responsibility to focus our knowledge and activities to save on imported liquid and gas fossil fuels, as well as coal on which energy security of Serbia is based. The rationalization in the use of available energy resources certainly positively affects economy and the environment of a country. This paper indicates motivations for the application of the underground coal gasification process, as well as surface gasification for ...... conditions of the environment, to artificial, deliberate or unintentional introduction of them into the outlet waters. In the treatment of wastewater, there is sometimes a need for additional, detailed re- search which should clarify the hydrogeological and hydro-chemical environment immediately ...
... substances (slag or ash) remain in the deposits bencath the surface of the earth, — there is no substantial pollution of the environment and the working environment, as there are no solid residues in the combustion of gas from UCG process in the boiler furnace, — there is no need for storing ...
... is done by the previous drainage or by blowing the air of a certain pressure and temperature, with the aim of water extraction. Neglecting hydrogeological research can lead to congestion of gasifi- cation, or to a potential reduction in the UCG process effects. Preliminary calculation indicators ...David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić. "Valorization of non-balanced coal reserves in Serbia for underground coal gasification" in Thermal Science (2019). https://doi.org/10.2298/TSCI190725390P
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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... hazardous materials which may have negative influence on the environment as well as human or animal health. In countries with a good economy, strict rules and laws have caused high control of the level of waste materials being released into the environment, and consequently, due to applying adequate techniques ...
... influence of industry on the environment is usually very small or negligible. On the other hand, in developing countries, control and human consciousness are significantly weaker, which often leads to higher quantities of waste materials being released into the environment and a significant increase of ...
... hazardous materials which may have negative influence on the environment as well as human or animal health. In countries with a good economy, strict rules and laws have caused high control of the level of waste materials being released into the environment, and consequently, due to applying adequate techniques ...Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović . "Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal" in Minerals, MDPI (2018)
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INVENTS: A Hybrid Mine Ventilation Planning and Design System
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 ...... validity and effectiveness of the ventilation system followed by suggestions for its improvement. The architecture of the system and the software environment in which the system was developed enable a dynamic communication between different phases of the outlined concept, leading to unlimited possibilities ...
... logic of the real system using the adopted graphic notation. In view of the fact that SimVent was developed in Visual Studio 6.0 programming environment, the package was presented through UML notation in the form of three-level class diagrams architecture. This architecture supports the object-oriented ...
... 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, the components of the domain are represented by objects that can be either classes or instances ...Lilić Nikola, Stanković Ranka, Obradović Ivan. "INVENTS: A Hybrid Mine Ventilation Planning and Design System" in Proceedings of International Scientific Conference of FME Session 4: Automation Control and Applied Informatics , Hong Kong : iConcept Press (2013)
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Optimisation of underground mine decline development system using genetic algorithm
... interconnect them into one integrated system. Suppose the deposit characteristics indicate that decline development system is preferred one. In such environment we treat development of an underground mine as access infrastructure composed of different decline sections. Access infrastructure designing ...
... which can be used to create such system. Suppose the deposit characteristics indicate that decline development system is preferred one. In such environment we treat development of an underground mine as access infrastructure composed of different decline sections. Access infrastructure design can be ...
... route sections, i.e., c1 = c2 = ,…,= cn = cd. In our case, the optimisation problem is a non-linear constrained programming problem. In such environment, genetic algorithm is used to figure out optimal values of the design parameters. 3. BRIEF DESCRIPTION OF GENETIC ALGORITHM (GA) Genetic ...Zoran Gligorić, Aleksandar Ganić, Rade Tokalić, Aleksandar Milutinović. "Optimisation of underground mine decline development system using genetic algorithm" in Underground mining engineering, Beograd : Univerzitet u Beogradu – Rudarsko–geološki fakultet (2014)
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INVENTS: a hybrid system for subsurface ventilation analysis
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 ...... validity and effectiveness of the ventilation system followed by suggestions for its improvement. The architecture of the system and the software environment in which the system was developed enable a dynamic communication between different phases of the outlined concept, leading to unlimited possibilities ...
... logic of the real system using the adopted graphic notation. In view of the fact that SimVent was developed in Visual Studio 6.0 programming environment, the package was presented through UML notation in the form of three-level class diagrams architecture. This architecture supports the object-oriented ...
... 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, the components of the domain are represented by objects that can be either classes or instances ...Nikola Lilić, Ranka Stanković, Ivan Obradović. "INVENTS: a hybrid system for subsurface ventilation analysis" in Proc. of International Scientific Conference of FME, September 2000, Ostrava, FME (2000)
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A new analytical method for determination of discharge duration in tunnels subjected to groundwater inrush
Mohsen Golian, Ebrahim Sharifi Teshnizi, Mario Parise, Josip Terzić, Sasa Milanović, Vesna Ristić Vakanjac, Masoud Mahdad, Mehdi Abbasi, Hossein Taghikhani, Habib Saadat (2021)Mohsen Golian, Ebrahim Sharifi Teshnizi, Mario Parise, Josip Terzić, Sasa Milanović, Vesna Ristić Vakanjac, Masoud Mahdad, Mehdi Abbasi, Hossein Taghikhani, Habib Saadat. "A new analytical method for determination of discharge duration in tunnels subjected to groundwater inrush" in Bulletin of Engineering Geology and the Environment, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s10064-021-02140-6
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Geomorfološke posledice poplava 2014. godine u karstu Dževrinske grede (istočna Srbija)
The year 2014 was the year of extremely large floods in Serbia. The territories of municipalities Kladovo and Negotin, along the Danube course in Eastern Serbia, were among the worst affected, mostly by flash floods. The karst ridge of Dževrinska Greda, a typical contact karst and stripe karst environment formed within Upper Jurassic limestones, suffered significant morphological changes in terms of heavy washout of sediments on one hand (in fluviokarstic gorges and active cave passages), and on the other ...Jelena Ćalić, Dejan Jeremić, Ana Mladenović. "Geomorfološke posledice poplava 2014. godine u karstu Dževrinske grede (istočna Srbija)" in Knjiga apstrakata 10. Simpozijuma o zaštiti karsta, Beograd : Akademski speleološko-alpinistički klub (2023.)
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Geoenvironmental Investigations at a Smelter Location in Bor (Serbia)
Petar Papić, Zvonimir Milijić, Jana Stojković, Jovana Milosavljević, Maja Todorović, Marina Ćuk, Željko Kamberović (2014)Petar Papić, Zvonimir Milijić, Jana Stojković, Jovana Milosavljević, Maja Todorović, Marina Ćuk, Željko Kamberović. "Geoenvironmental Investigations at a Smelter Location in Bor (Serbia)" in Challenges : Sustainable Land Management – Climate Change, Advances in Geoecology 43, Catena Verlag GMBH (2014)
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Models of Determining the Parameters of Rock Mass Oscillation Equation with Experimental and Mass Blastings
... equation were determined in three ways—models in the given work environment. It was noted that, in practice, all three models can be successfully used to calculate the oscillation velocity of the rock masses. Keywords: working environment; blasting; seismic effect; rock mass oscillation velocity 1. ...
... explosives, blasting conditions and geological characteristics of the rock mass, and it is determined based on trial blasting for a specific work environment. Thus, this paper offers analysis of the method for determination of parameters of the rock mass oscillation equation, which are conditioned by rock ...
... and those parameters are: displacement of the rock mass particles, oscillation velocity of the rock mass particles and acceleration of the aroused environment. Sizes of these three parameters point to the intensity of the force which caused them, as well as to the degree of danger caused by the shock. The ...Suzana Lutovac, Branko Gluščević, Rade Tokalić, Jelena Majstorović, Čedomir Beljić. "Models of Determining the Parameters of Rock Mass Oscillation Equation with Experimental and Mass Blastings" in Minerals, Basel : MDPI AG, Basel, Switzerland (2018). https://doi.org/10.3390/min8020070
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A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)
... London: CRC Press. KREŠIĆ, N. & MIKSZEWSKI, A. (2012) Hydrogeological conceptual site models; data analysis and visualisation. London: CRC Press. MORTON, K.L., VAN MEKERK, F.A. (1993) A phased approach to mine dewatering. Mine Water and Environment, 12 (1), pp. 27-33. NIEDBALSKA, K. et al. (2011) ...
... 2023-10-14 03:38:50 A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia) Jelena Ratković, Dušan Polomčić, Dragoljub Bajić, Bojan Hajdin Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] A hydrogeological model of the open-cast ...
... second phase is elaboration, founded upon the outcomes of additional, more recent geological and hydrogeological research. In essence, the hydrogeologic model shows the types of rocks, from a hydrogeological perspective, and their geometry. The focus is on aquifers and their spatial relationships. ...Jelena Ratković, Dušan Polomčić, Dragoljub Bajić, Bojan Hajdin. "A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)" in Underground Mining Engineering no. 29, Belgrade : University of Belgrade - Faculty of mining and geology (2016): 43-54
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The correlation of Upper Miocene lithostratigraphic units of the southern part of the Pannonian basin
Filip Anđelković, Dejan Radivojević (2019)... Hungarian one, then the Serbian one, and after that the Croatian one. Furthermore, the depositional environment is indicated after the name. 1.Endrőd – Hetin – Medvedski Breg: hemipelagic lacustrine environment 2. Szolnok – Majdan – Andraševec (lower part): basinal turbidites 3. Algyő – Mokrin – Andraševec ...Filip Anđelković, Dejan Radivojević. "The correlation of Upper Miocene lithostratigraphic units of the southern part of the Pannonian basin" in Knjiga sažetaka i radova II Kongresa geologa Bosne i Hercegovine, Laktaši BiH, oktobar 2-4, 2019, Udruženje geologa u Bosni i Hercegovini (2019)
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Hydrogeochemistry of Uranium in the Groundwaters of Serbia
Marina Ćuk, Maja Todorović, Petar Papić, Jovan Kovačević, Zoran Nikić. "Hydrogeochemistry of Uranium in the Groundwaters of Serbia" in Uranium - Past and Future Challenges, Springer International Publishing Switzerland (2015). https://doi.org/10.1007/978-3-319-11059-2_89
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New approach to correlation of hydrocarbon reservoirs in sandstone layers of the "Mokrin" field"
Saša Ivanišević, Dejan Radivojević (2018)геофизички каротаж, депозиционе средине, лежишта угљоводоника, миоцен, пост‐ рифтнo, секвенциона стратиграфија... Department, No. 6 Kamenička Street, 11000 Belgrade, Serbia, e‐mail: dejan.radivojevic@rgf.bg.ac.rs Key words: Well Logging, depositional environment, hydrocarbon reservoirs, Miocene, post‐rift, sequ‐ ence stratigraphy. INTRODUCTION Based on the correlation applied so far, oil and gas ...
... pointing to the reduction in the level of depositional energy. Cylindrical shape of the GR log occurs against sand layers deposited in the environment where the relative deposition level has not changed, while the sediment yield has been considerable. RESULTS Since the extensi ...Saša Ivanišević, Dejan Radivojević. "New approach to correlation of hydrocarbon reservoirs in sandstone layers of the "Mokrin" field"" in 17th Serbian Geological Congress, Vrnjačka Banja, 17-20 maj 2018, Srpsko geološko društvo (2018)
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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 ...Radmila Gaćina, Bojan Dimitrijević. "Reducing environmental impact caused by mining activities in limestone mines" in Underground mining engineering , Belgrade : University of Belgrade - Faculty of Mining and Geology (2022)
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Integrisano okruženje za pripremu paralelizovanog korpusa
Razvoj paralelizovanih korpusa zahteva pripremu paralelnih tekstova za njihovu integraciju u paralelizovani korpus. Reč je o jednom kompleksnom zadatku koji se može rešiti na različite načine, i koji mora da se odvija u nekoliko koraka. U ovom radu najpre je iznet postupak pripreme paralelnih tekstova za paralelizovani korpus koji se koristi u Grupi za jezičke tehnologije Univerziteta u Beogradu. Potom je dat kratak pregled programa (XAlign, Concordancier, WS4LR), odnosno softverskih alata koji se pri tome koriste. Nedostatak udobnog okruženja ...... are used for alignment. The absence of a comfortable environment with a graphical user interface, where all these programs would be united, motivated the Human Language Technology Group to embark on the task of developing an integrated environment for the preparation of aligned corpora, under the name ...
... Univerziteta u Beogradu razvije sopstveno integrisano razvojno okruženje za paralelizovane korpuse ACIDE (Aligned Corpora Integrated Development Environment). Ovo okruženje, između ostalog, obezbeđuje grafički korisnički interfejs (GUI) za: • paralelizaciju • vizuelizaciju paralelizovanog teksta ...
... name of ACIDE. For the construction of this environment we chose the C# programming language. Among other things, ACIDE provides a graphical user interface (GUI) for alignment and visualization of aligned texts, their control and correction, as well as generation of files in TMX format. ACIDE also ...Ivan Obradović, Ranka Stanković, Miloš Utvić. "Integrisano okruženje za pripremu paralelizovanog korpusa" in Zbornik radova međunarodnog simpozijuma Razlike između bosanskog/bošnjačkog, hrvatskog i srpskog jezika, Graz, Austria, April 2007, - (2007)
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Using technology for knowledge transfer between academia and enterprises
Ivan Obradović, Ranka Stanković (2014)... entrepreneurial environment, the TEL platform’s backend control panel provides similar opportunities for tracking the progress of graduate students who started to work in companies and are now involved in life-long learning. The same way university teachers in the academic environment monitor their ...
... ation with students. Later on, blended approach at FMG was further enhanced by introducing Moodle (Modular Object-Oriented Dynamic Learning Environment), a free software e-learning platform, conceived by Martin Dougiamas, who is still the lead developer of the Moodle.Org community. Moodle helps ...
... functionalities for efficient realization of the proposed approach. A backend control panel within the platform will enable teachers in the academic environment to track the progress of students while using the learning resources, and thus have an insight into how they are mastering specific concepts, ...Ivan Obradović, Ranka Stanković. "Using technology for knowledge transfer between academia and enterprises" in Knowledge and Management Models for Sustainable Growth, Proc. of IFKAD 2014, 9th International Forum on Knowledge Asset Dynamics, 11-13 June 2013, Matera, Italy, Bari : IFKAD (2014)
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Geochemical study of U, Th and REE mineralizations in Jurassic sediments and hydrochemical characterization of groundwaters in Eastern Serbia – Case study: Plavna area
Jovan Kovačević, Maja Todorović, Marina Ćuk, Petar Papić . "Geochemical study of U, Th and REE mineralizations in Jurassic sediments and hydrochemical characterization of groundwaters in Eastern Serbia – Case study: Plavna area" in Carpathian Journal of Earth and Environmental Sciences (2016)
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Primena programa UVSZ pri zaštiti od miniranja
Primena energije eksploziva tj. miniranje, predstavlja osnovni način eksploatacije čvrstih mineralnih sirovina u rudarstvu. Miniranjem se postižu vrlo povoljni tehnoekonomski pokazatelji, koje nažalost prate i negativni efekti miniranja. U cilju zaštite životne sredine potrebno je za svaku radnu sredinu odrediti jednačinu oscilovanja stenske mase pri miniranju. Ova jednačina definiše promenu brzine oscilovanja stenske mase u zavisnosti od rastojanja, količine eksploziva, uslova izvođenja miniranja i geoloških karakteristika stenske... blasting, which are followed by negative effects of blasting unfortunately. In order to protect the environment, it is necessary to determine the rock mass oscillation equation for each working environment during blasting. This equation defines the change of rock mass oscillation velocity depending on ...
... blasting, which are followed by negative effects of blasting unfortunately. In order to protect the environment, it is necessary to determine the rock mass oscillation equation for each working environment during blasting. This equation defines the change of rock mass oscillation velocity depending on distance ...
... shock. Based on application of this equation, we are able to predict the oscillation velocity for each subsequent blasting in a given working environment. On that way, shocks from blasting, in a seismic sense, are brought under control. In this paper, the application of UVSZ program is shown, which ...Suzana Lutovac, Miloš Gligorić, Jelena Majstorović, Luka Crnogorac, Rade Tokalić. "Primena programa UVSZ pri zaštiti od miniranja" in XIII skup privrednika i naučnika SPIN’21, Industrija 4.0 – mogu nosti, izazovi i rešenja za digitalnu transformaciju privrede, Univerzitet u Beogradu, Fakultet organizacionih nauka (2021)
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The Potential of Biomarkers to Distinguish Lower and Middle Miocene Lignites from the Coal-Mining District of Lusatia
... of the study is to examine the potential of biomarkers to distinguish Lower and Middle Miocene lignites in relation to sources and depositional environment of organic matter (OM). Lignite samples were collected from the 2nd Miocene Seam Horizon or its equivalent of Piskowitz (Lower Miocene) and ...
... ranges from 0.67 to 0.80% and from 0.90 to 1.24 % in Lower and Middle Miocene samples, respectively, implying peatification in the freshwater environment. In aliphatic fractions of all samples, n-alkanes prevail, followed by hopanoids and diterpenoids, while steroids, non-hopanoid triterpenoids ...I. Kojic, J. Kus, D. Zivotic, K. Stojanovic. "The Potential of Biomarkers to Distinguish Lower and Middle Miocene Lignites from the Coal-Mining District of Lusatia" in 30th International Meeting on Organic Geochemistry (IMOG 2021), European Association of Geoscientists & Engineers (2021). https://doi.org/10.3997/2214-4609.202134092
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Developing Students’ Mining and Geology Vocabulary Through Flashcards and L1 in the CLIL Classroom
... the need to refer constantly to dictionaries or the teacher, we hypothesized that with the use of flashcards and judicious use of L1 in the CLIL environment, our students will have larger amount of quality foreign language input as well as simplified task of learning thousands of items in a meaningful ...
... invaluable tool in the learning process, it is included in the blended learning approach through an export of its subsets to the Moodle e-learning environment. (Stanković et al 2012, e-Learning). In search of acceptable flashcard system, we have opted for in-house development in order to incorporate ...
... returned. The respondents were freshmen who were specializing in Geology and Mining at the University of Belgrade. Their amount of time in L2 environment was 4 hours per week for 2 semesters, which amounts to about 130 hours of English instruction. All the statements were rated on the Likert scale ...Lidija Beko, Ivan Obradović, Ranka Stanković. "Developing Students’ Mining and Geology Vocabulary Through Flashcards and L1 in the CLIL Classroom" in Proceedings of the Second International Conference on Teaching English for Specific Purposes and New Language Learning Technologies, May, 22-24, 2015, Niš, Serbia, Faculty of Electronic Engineering, University of Niš, Niš : Faculty of Electronic Engineering (2015)