Претрага
215 items
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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 ...... 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 in Petroleum Science, Volume 19 ...
... Conference and Exhibition, 5-8 October 2003, Denver, Colorado. Kirvelis R., Davies D.R.,(2003). Enthalpy Balance Model Leads to more Accurate Modelling of Heavy Oil Production with an Electric Submersible Pump, Chem. Eng. Res. Des. 81, 342-351. Kocherginsky N.M., Tan C.L., Lu W.F., (2003) Dem ...
... Tuah Bin Baharudin (2012) Modeling the technology transfer process in the petroleum industry: Evidence from Libya, Mathematical and Computer Modelling, Volume 55, Issues 3–4, 451-470. Modesty Kelechukwu E., Said Al-Salim H., Saadi A., (2013) Prediction of Wax Deposition Problems of Hydrocarbon ...Elnori Elmabrouk Ali Elhaddad. "Novi model za postizanje optimalne proizvodnje na naftnom polju Amal" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-04-16)
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Effectiveness Analysis of Different Bucket-wheel Excavators
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 ...Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Miloš Tanasijević, Filip Miletić. "Effectiveness Analysis of Different Bucket-wheel Excavators" in 8th International Conference Mining and Environmental Protection, Sokobanja, 22-25 September 2021, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia (2021)
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Simulation of Hydrogeological Environmental Discharge in Case of Interruption Constant Observations
Marina Čokorilo Ilić, Dragoljub Bajić, Miroslav Popović. "Simulation of Hydrogeological Environmental Discharge in Case of Interruption Constant Observations" in International Scientific Conference - Sinteza 2024, Belgrade, 16. maj 2024, Singidunum University (2024). https://doi.org/10.15308/Sinteza-2024-288-294
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Sustainable Modularity Approach to Facilities Development Based on Geothermal Energy Potential
The study presented in this paper assessed the multidisciplinary approach of geothermal potential in the area of the most southeastern part of the Pannonian basin, focused on resources utilization. This study aims to present a method for the cascade use of geothermal energy as a source of thermal energy for space heating and cooling and as a resource for balneological purposes. Two particular sites were selected—one in a natural environment; the other within a small settlement. Geothermal resources come ...геотермална енергија, Панонски басен, геотермална каскада, енергетска ефикасност, бањски центри, балнеологија, биоклиматска архитектура, стратегије пасивног дизајнирања, модуларни објекти... Consent Statement: Not applicable. Data Availability Statement: Not applicable. Acknowledgments: Data preparation and technical support for energy modelling: Nikola Miletić, PhD student, University of Belgrade—Faculty of Architecture. Conflicts of Interest: The authors declare no conflict of interest ...
... its geothermal resources. Geothermics 2015, 53, 328–352. [CrossRef] 24. Kostić, A. Thermal Evolution of Organic Matter and Petroleum Generation Modelling in the Pannonian Basin (Serbia); Faculty of Mining and Geology, Belgrade University: Belgrade, Serbia, 2010; ISBN 978-86-7352-221-0. 25. Milenić ...Nataša Čuković-Ignjatović, Ana Vranješ, Dušan Ignjatović, Dejan Milenić, Olivera Krunić. "Sustainable Modularity Approach to Facilities Development Based on Geothermal Energy Potential" in Applied Sciences-Basel, МDPI (2021). https://doi.org/10.3390/app11062691
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Definition of groundwater genesis and circulation conditions of the complex hydrogeological karst system Mlava–Belosavac–Belosavac-2 (eastern Serbia)
Ljiljana Vasić, Saša Milanović, Zoran Stevanović, Laszlo Palcsu. "Definition of groundwater genesis and circulation conditions of the complex hydrogeological karst system Mlava–Belosavac–Belosavac-2 (eastern Serbia)" in Carbonates and Evaporites, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s13146-020-00550-3
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Integrative GHG Assessment in Oil and Gas Industry
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 ...... 0.56 (C,Hw)n-Butane ! 121 : 0.51 (CsH>) Isopentane E 0.54 E 0.20 (CSHu) n-Pentane ! 0.29 : 0.12 (CeHu) Hexanes ? 0.60 0.12 Accurate GHG modelling requires the use of reliable and up-to- date emission factors. In this study, emission factors from the Intergovernmental Panel on Climate Change ...Aleksandar Mirković, Marija Živković, Stevan Đenadić, Darja Lubarda, Chinedu Anyanwa. "Integrative GHG Assessment in Oil and Gas Industry" in Energija, ekonomija, ekologija (2023). https://doi.org/10.46793/EEE23-1.51M
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Underground loading-haulage equipment selection with application of topsis method with different weighting methods of criteria
The choice of adequate mining machines is one of the most complex problems in the underground exploitation of mineral raw materials. The weight of such a decision is reflected in the high prices of these machines and the occurrence of even greater costs during their use if their choice was wrongly conceived. There are numerous examples from practice in which such decisions were made solely on the basis of comparing the prices of machines, without considering any of the ...utovarno-transportna mehanizacija, izbor, TOPSIS, entropija, standardna devijacija, težina kriterijumaVladimir Krivošić, Luka Crnogorac, Rade Tokalić. "Underground loading-haulage equipment selection with application of topsis method with different weighting methods of criteria" in Underground mining engineering, University of Belgrade - Faculty of Mining and Geology (2024)
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Rock slope stability analysis under Hoek–Brown failure criterion with different flow rules
The stability analysis of homogeneous rock slope following the Hoek–Brown failure criterion under the hypothesis of different flow rules is performed based on limit equilibrium and finite element methods. The applied failure criterion is the generalized Hoek–Brown that can be introduced as a shear/normal function in analysis applying different flow rules. The results are compared with those obtained by the application of equivalent shear strength parameters of the Mohr–Coulomb criterion, considering that this is still the most widely used ...Kružna klizna površ, Huk-Braunov kriterijum loma, Kriterijum popuštanja, Smičuća/normalna funkcija, Nivo napona, Verovatnoća i parametarska analizaSvetlana Melentijević, Zoran Berisavljević, Dušan Berisavljević, Claudio Olalla Marañón . "Rock slope stability analysis under Hoek–Brown failure criterion with different flow rules" in Bulletin of Engineering Geology and the Environment , Springer (2024). https://doi.org/10.1007/s10064-024-03667-0
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Хидрогеохемијске карактеристике и квалитет вода слива Требишњице, Република Српска, Босна и Херцеговина
Dragoslav R. Banjak (2016-08-25)Упркос неповољном временском и просторном распореду, воде су најзначајнијиприродни ресурс Источне Херцеговине. Ова чињеница довела је до реализацијепројекта „Вишенамјенског хидросистема Требишњица“, којим је, премаМилановићу (2006), до сада обухваћено: седам хидроелектрана, шестакумулација, шест брана, шест тунела укупне дужине 59,7 km, неколикоприступних тунела, 62,5 km бетонског канала кроз Попово поље, канал крозДабарско (6750 m) и Фатничко поље (2770 m) и систем тунел-канал или цјевоводпрема Дубравама.У почетку са доминантним енергетским предзнаком, концепција јетрансформисана у интегрално рјешење вишенамјенског коришћења и заштитевода и животне ...хидрогеохемијски процеси, мултиваријантна статистичкаанализа, инверзно геохемијско моделовање, квалитет воде, употребиљивост водеза наводњавање, слив Требишњице... hydrogeochemical processes and water evolution in the river Trebišnjica catchment, establishing their origin and mixing by application of geochemical modelling in combination with multivariate statistics techniques and geospatial data analysis. In order to resolve the problem which is the topic of this ...
... statistical calculations made by software package SPSS Statistics Version 20 (IBM, 2011) and Statistica 8 (Statsoft, 2007), an inverse geochemical modelling has been perfoormed on certain samples to confirm geochemical reactions which control composition of water (software package PHREEQC -3, USGS). ...
... dominant hydrogeochemical processes in the catchment such as carbonate dissolution, sulphate, chloride as well as the impact of pollutants. Inverse modelling in the river Trebošnjica catchment has been made in order to reconstruct chemical evolution of water and changes in chemical composition along the ...Dragoslav R. Banjak. "Хидрогеохемијске карактеристике и квалитет вода слива Требишњице, Република Српска, Босна и Херцеговина" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-08-25)
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Centar za hidrogeologiju karsta - 15 godina nauke i struke
... (2016): 3D Spatial modelling of karst channels-The Beljanica karst massif, Karst without Boundaries, edt. Z. Stevanović, N. Krešić, N. Kukurić, CRC Press/Balkema, ISBN 9781138029682, Taylor & Francis group, pp.169– 188 . Milanović, S., Vasić, Lj. (2016): 3D Conduit modelling of leakage below a dam ...
... Marinović, V. (2023): Quantitative and Geochemical Characterization of the Mokra Karst Aquifer (SE Serbia) by Time Series Analysis and Stochastic Modelling. In: Andreo, B., Barber4,1.A., Duran-Valsero, ].)., Gii-Marquez, .M, Mudara, M. (eds) FuroKarst (2022): Malaga. Advances in Karst Science. Springer ...
... Marinović, V., Stevanović, Z. (2023): Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling: Environmental FEarth Sciences, 82:222, https://doi.org/10.1007/s12665-023-10911-5 'Kiyani, V., Esmaili, A., Alijani, F., Samani, S., Vasic, Lj ...urednici Saša Milanović, Ljiljana Vasić, Zoran Stevanović, Branislav Petrović. Centar za hidrogeologiju karsta - 15 godina nauke i struke, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet, Centar za hidrogeologiju karsta, 2023
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Building learning capacity by blending different sources of knowledge
... Department for Computer science, Faculty of Mathematics University of Belgrade. She is interested in semantic web, information systems, database modelling, geoinformation management and artificial intelligence. Her current research is focused on building custom components that incorporate knowledge ...Ivan Obradović, Ranka Stanković, Olivera Kitanović, Dalibor Vorkapić. "Building learning capacity by blending different sources of knowledge" in International Journal of Learning and Intellectual Capital (2016). https://doi.org/10.1504/IJLIC.2016.075698
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Flood protection and water utilization of karst poljes: example of Gatačko Polje, Eastern Herzegovina
Tina Dašić, Ljiljana Vasić (2020)Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry,Global and Planetary ChangeTina Dašić, Ljiljana Vasić. "Flood protection and water utilization of karst poljes: example of Gatačko Polje, Eastern Herzegovina" in Environmental Earth Sciences, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s12665-020-08987-4
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Groundwater management by riverbank filtration and an infiltration channel, the case of Obrenovac, Serbia
Dušan Polomčić, Bojan Hajdin, Zoran Stevanović, Dragoljub Bajić, Katarina Hajdin. "Groundwater management by riverbank filtration and an infiltration channel, the case of Obrenovac, Serbia" in Hydrogeology Journal, Berlin, Heidelberg : Springer, International Association of Hydrogeologists (2013). https://doi.org/10.1007/s10040-013-1025-9
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Some models for determination of parameters of the soil oscillation law during blasting operations
... realized by the University of Belgrade, Faculty of Mining and Geology. Author Contributions: Suzana Lutovac and Branko Gluščević performed the modelling, optimization and analysis of results. The paper was written by Suzana Lutovac with the support of Rade Tokalić and revised by Čedomir Beljić. ...Suzana Lutovac, Dragan Medenica, Branko Gluščević, Rade Tokalić, Čedomir Beljić. "Some models for determination of parameters of the soil oscillation law during blasting operations" in Energies, Basel, Switzerland : MDPI (2018). https://doi.org/10.3390/en9080617
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Late and post-collisional tectonic evolution of the Adria-Europe suture in the Vardar Zone
The Vardar Zone is a product of the Triassic-Jurassic opening of the Neotethys, Jurassic obduction, Late Cretaceous/Paleogene consumption of the oceanic crust and continental collision. During the last process, the Eastern Vardar Zone was thrust over the Central and eventually both onto the Western Vardar Zone. The present paleomagnetic and structural study provided new results from the first two zones in the Belgrade area. The younger set of data, together with published ones from the third zone, provide firm ...Emő Márton, Marinko Toljić, Vesna Cvetkov. "Late and post-collisional tectonic evolution of the Adria-Europe suture in the Vardar Zone" in Journal of Geodynamics, Elsevier BV (2022). https://doi.org/10.1016/j.jog.2021.101880
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Understanding partitioning of deformation in highly arcuate orogenic systems: Inferences from the evolution of the Serbian Carpathians
Nemanja Krstekanić, Liviu Matenco, Marinko Toljić, Oleg Mandić, Uroš Stojadinović, Ernst Willingshofer (2020)... Cvetković, V., Cloetingh, S., Gerya, T., 2018. Variability of orogenic magmatism during Mediterranean-style continental collisions: a numerical modelling approach. Gondwana Res. 56, 119–134. Angelier, J., 1994. Fault slip analysis and paleostress reconstruction. In: Hancock, P.L. (Ed.), Continental ...
... aspects of tectonic stress inversion with reference to the TENSOR program. In: Nieuwland, D.A. (Ed.), New Insights into Structural Interpretation and Modelling, Special Publications 212. Geological Society, London, pp. 75–100. Dewey, J.F., Holdsworth, R.E., Strachan, R.A., 1998. Transpression and transtension ...
... Hist. Mus. 3, 27–46. Doblas, M., 1998. Slickenside kinematic indicators. Tectonophysics 295, 187–197. Dooley, T.P., Schreurs, G., 2012. Analogue modelling of intraplate strike-slip tectonics: a review and new experimental results. Tectonophysics 574–575, 1–71. Dupont-Nivet, G., Vasiliev, I., Langereis ...Nemanja Krstekanić, Liviu Matenco, Marinko Toljić, Oleg Mandić, Uroš Stojadinović, Ernst Willingshofer. "Understanding partitioning of deformation in highly arcuate orogenic systems: Inferences from the evolution of the Serbian Carpathians" in Global and Planetary Change, Elsevier BV (2020). https://doi.org/10.1016/j.gloplacha.2020.103361
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Strain partitioning in a large intracontinental strike-slip system accommodating backarc-convex orocline formation: The Circum-Moesian Fault System of the Carpatho-Balkanides
Nemanja Krstekanić, Liviu Matenco, Uroš Stojadinović, Ernst Willingshofer, Marinko Toljić, Daan Tamminga (2022)oroklini, raspodela deformacija, transkurentna kretanja, Karpato-balkanidi, Cirkum-mezijski rasedni sistem... SE continuation of the Timok Fault is also prevented by the transfer of deformation to thrusting during indentation, as shown by recent analogue modelling applied to the study area (Krstekanić et al., 2021). 6.3. Mechanism of strain partitioning and similar observations elsewhere The post-20 Ma ...
... Cvetković, V., Cloetingh, S., Gerya, T., 2018. Variability of orogenic magmatism during Mediterranean-style continental collisions: a numerical modelling approach. Gondwana Res. 56, 119–134. Angelier, J., 1979. Determination of the mean principal directions of stresses for a given fault population ...
... org/10.1016/j.gloplacha.2020.103361. Krstekanić, N., Willingshofer, E., Broerse, T., Matenco, L., Toljić, M., Stojadinovic, U., 2021. Analogue modelling of strain partitioning along a curved strike-slip fault system during backarc-convex orocline formation: implications for the Cerna-Timok fault ...Nemanja Krstekanić, Liviu Matenco, Uroš Stojadinović, Ernst Willingshofer, Marinko Toljić, Daan Tamminga. "Strain partitioning in a large intracontinental strike-slip system accommodating backarc-convex orocline formation: The Circum-Moesian Fault System of the Carpatho-Balkanides" in Global and Planetary Change, Elsevier BV (2022). https://doi.org/10.1016/j.gloplacha.2021.103714
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Multi-word Expressions for Abusive Speech Detection in Serbian
Ovaj rad predstavlja istraživanja na usavršavanju i unapređenju srpske verzije rečnika Hurtlex, višejezičnog leksikona uvredljivih reči. Posebnu pažnju posvećujemo dodavanju izraza sa više reči (polileksemskih jedinica) koji se mogu smatrati uvredljivim, jer su takvi leksički zapisi veoma važni za postizanje dobrih rezultata u mnoštvu zadataka otkrivanja uvredljivog jezika. Srpski morfološki rečnici se koriste kao osnova za čišćenje podataka i stvaranje rečnika. Istaknuta je veza sa drugim leksičkim i semantičkim resursima na srpskom jeziku i predviđena je izgradnja sistema za ...... et al., 2020; Mitrovic et al., 2020). The Ontology of Rhetorical Figures for Serbian (Mladenović and Mitrović, 2013) is a valuable resource for modelling and detection of rhetorical figures that play an important part in abusive language, e.g. irony, sarcasm, simile, hyperbole, litotes etc. Initial ...Ranka Stanković, Jelena Mitrović, Danka Jokić, Cvetana Krstev. "Multi-word Expressions for Abusive Speech Detection in Serbian" in Proceedings of the Joint Workshop on Multiword Expressions and Electronic Lexicons, Association for Computational Linguistics (2020)
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A WebGIS Decision Support System for Management of Abandoned Mines
Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2016)... pondering the alternatives and determining their effects in relation to the goals set. Application of AHP methods in environmental protection system modelling provides for ranking of work activities, statuses, environmental and other factors taking into account the priorities related to remediation and ...Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis. "A WebGIS Decision Support System for Management of Abandoned Mines" in Energies 7 no. 9 (2016): 567. https://doi.org/10.3390/en9070567
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Tectonic evolution of the Vršac Mts. (NE Serbia): Inferences from field kinematic and microstructural investigations
The Vršac Mts. in NE Serbia represent the key area to investigate structural relations between the Northern Serbo-Macedonian Subunit and Supragetic Unit of the Dacia Mega-Unit. The geodynamic events during the Variscan orogeny in the Late Paleozoic colligated the two units and led to their metamorphic differentiation. The Late Cretaceous extension exhumed the medium-grade Serbo-Macedonian metamorphic rocks and structurally juxtaposed them against the low-grade metamorphosed basement of the Supragetic Unit along an E-dipping shear zone, which outcrops in the ...severna srpsko-makedonska subjedinica, supragetikum, kinematska analiza, multifazna ekstenzionalna deformacija... Cvetković V., Cloetingh S. & Gerya T. 2018: Variability of orogenic magmatism during Mediter- ranean-style continental collisions: a numerical modelling approach. Gondwana Research 56, 119–134. https://doi.org/ 10.1016/j.gr.2017.12.007 Antić M., Peytcheva I., von Quadt A., Kounov A., Trivić B. ...Uroš Stojadinović, Nemanja Krstekanić, Bojan Kostić, Marija Ružić, Aleksa Luković . "Tectonic evolution of the Vršac Mts. (NE Serbia): Inferences from field kinematic and microstructural investigations" in Geologica Carpathica, Central Library of the Slovak Academy of Sciences (2021). https://doi.org/https://doi.org/10.31577/GeolCarp.72.5.3