Претрага
176 items
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Numeričko modelovanje povećanja iskorišćenja naftnih ležišta injektiranjem polimera i analiza osetljivosti parametara
Jana Šujica (2024)U toku proizvodnje jednog ležišta, nakon primene sekundarnih metoda iskorišćenja, velika količina nafte ostaje zarobljena u ležištu. Ovaj “problem” rešava se upotrebom tercijarnih metoda iskorišćenja.Tercijarne metode mogu se podeliti na: hemijske, termičke, mikrobiološke i metode utiskivanja gasova u uslovima mešanja i nemešanja.U ovom radu analiziraju se hemijske metode koje se odnose na injektiranje polimera u cilju povećanja iskorišćenja naftnog ležišta “X”. Simulacija je rađena u simulatoru “Tnavigator” na sintetičkom modelu u cilju definisanja stepena iskorišćenja naftnog ležišta “X” nakon ...... 00347 Slika 3.1.5. Dubina modela 25 3.2. Početne geološke rezerve fluida U fabeli 3.2.1. prikazane su početne geološke rezerve fluida u ležištu, izražene u sm3. Tabela 3.2.1. Količine prisutnih fluida u ležišta FLUID UKUPNO U LEŽIŠTU, sm3 voda 10,71-10% nafta 3214,68:10% mobilna nafta ...
... One se odnose na osobine stene i fluida, lokaciju, bušenje i opremanje, pritiske bušotinskih testova ı rezultate puls testa u cilju određivanja bušotinskog kontinuiteta i efektivne propusnosti. U cilju optimizacije iskorišćenja ležišta ugljovodoničnih fluida razradno/proizvodno modeliranje obuhvata: ...
... nafti; Kompozitni ili komponentni modeli uzimaju u obzir fazni sastav fluida u funkciji pritiska. Kod njih se računa prelaz mase ugljovodonika između tečne i gasovite faze; Termički simulacioni modeli uključuju protok fluida, prenos toplote ı hemijske reakcije. Termički simulacioni modeli razmatraju ...Jana Šujica. Numeričko modelovanje povećanja iskorišćenja naftnih ležišta injektiranjem polimera i analiza osetljivosti parametara, 2024
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Atmospheric exposure vs burying: influences on damage intensity of built-in kersantite in the monument of the Small Staircase (Belgrade, Serbia)
Proučavan je efekat „zatrpanog kamena“ na intenzitet procesa degradacije prisutnih na kersantitu koji je ugrađen u spomenik Malo stepenište. Istraživanja su vršena na uzorcima stene iz kamenoloma i na oštećenim kamenim blokovima ugrađenim u spomenik. Dok su neki delovi stepeništa bili pod zemljom 90 godina, većina kamenih elemenata je bila izložena različitim uslovima sredine i antropogenim uticajima. Urađeno je detaljno mapiranje trenutnog stanja spomenika kako bi se istražio uticaj “zatrpavanja” i kompleksne geometrije spomenika na tip propadanja i variranje ...Nevenka Novaković, Predrag Dabić, Vesna Matović. "Atmospheric exposure vs burying: influences on damage intensity of built-in kersantite in the monument of the Small Staircase (Belgrade, Serbia)" in Environmental Earth Sciences, Springer Science and Business Media LLC (2023). https://doi.org/10.1007/s12665-023-10794-6
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Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду
... вачки рад му је из области физике лежишта флуида, разраде нафтних и гасних лежишта, управљања лежиштима флуида, еко- нонике у нафтној и гасној привреди, техничке заштите и заштите животне средине, петрофизике, динамике и термодинамике лежишних флуида, моделирања нафтних и гасних лежи- шта, разраде ...
... TODOROVIĆ K., 2014: Dynamics of landslide model with time delay and periodic parameter pertubacions. Communications in nonlinear science and numerical simulation. Elsevier. KOSTIĆ S., VASOVIĆ N., JEVREMOVIĆ D., SUNARIĆ D., FRANOVIĆ I., TODOROVIĆ K., 2014: Complex Dynamics of landslides with Time ...
... PLoS One 8, е82056. KOSTIĆ S., VASOVIĆ N., FRANOVIĆ I., TODOROVIĆ K., 2013: Complex dynamics of spring-block earthquake model under periodic parameter perturbations. Journal of Computational and Nonlinear Dynamics, 9, 031019. 4. СПИСАК ИЗАБРАНИХ НАУЧНИХ И СТРУЧНИХ РАДОВА НАСТАВНИКА И САРАДНИКА ...главни и одговорни уредник Душан Поломчић. Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду, Београд : Универзитет у Београду, Рударско-геолошки факултет, 2016
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Centar za hidrogeologiju karsta - 15 godina nauke i struke
... carbonate tablets in the ground to analyse the dynamics of the carbon cycle in nature and its impact on the karst process Dr. Cao presented field equipment and devices that should be installed on karst terrains in Serbia, to observe and analyse the dynamics of the carbon cycle in nature and its impact ...
... in water and host rock. During the field trips, together Wwith Dr. Cao, they had the opportunity to visit IRCK's karst polygons for analysing the dynamics of the carbon cycle in nature. According to IRCK-CKH cooperation, more than 140 isotopic (ŽH/!H, !#O/!O and !5C/!C) and ionic analysis of the Beljanica ...
... otherT aquifers and surface Waters. • Water balancing in karst, the problem of delineating watersheds. • Specifics of the quantity and quality dynamics of karst spring water, water intakes and regulation structures in karst (spring zones and watersheds). • Construction conditions and problems ...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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Hypogene speleogenesis related to porphyry magmatic intrusions and its influence on subsequent karst evolution in the Peruvian high Andes
Alexander Klimchouk, David Evans, Sasa Milanovic, Cristian Bittencourt, Mauro Sanchez, F. Carlos Aguirre (2022)Alexander Klimchouk, David Evans, Sasa Milanovic, Cristian Bittencourt, Mauro Sanchez, F. Carlos Aguirre. "Hypogene speleogenesis related to porphyry magmatic intrusions and its influence on subsequent karst evolution in the Peruvian high Andes" in Geomorphology, Elsevier BV (2022). https://doi.org/10.1016/j.geomorph.2022.108488
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A Knowledge-Based Approach to Mine Ventilation Planning in Yugoslav Mining Practice
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 ...... Figure 2 illustrates the place of INVENTS has in our approach to mine ventilation planning and design where it interacts with CFD (Computational Fluid Dynamics) software. INVENTS is a complex structure composed from several integrated software packages: ResNet, SimVent and VENTEX (Fig. 3). These packages ...Nikola Lilić, Ivan Obradović, Ranka Stanković. "A Knowledge-Based Approach to Mine Ventilation Planning in Yugoslav Mining Practice" in Mineral Resources Engineering 11 no. 4, Imperial College Press (2002): 361-382. https://doi.org/10.1142/S0950609802001014
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Models of Determining the Parameters of Rock Mass Oscillation Equation with Experimental and Mass Blastings
... 2015; Volume 5, pp. 221–229. 2. Kahriman, A. Analysis of Parameters of Ground Vibration Produced from Bench Blasting at a Limestone Quarry, Soil Dynamics and Earthquake Engineering 24; Elsevier: Amsterdam, The Netherlands, 2004; pp. 887–892. 3. Sambuelli, L. Theoretical Derivation of a Peak Particle ...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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Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)
Saša Ivanišević, Dejan Radivojević (2018)Exploration for oil and gas in mature areas, such as the Pannonian Basin, can benefit from reexamination of old data using more advanced modern workflows that focus on the temporal and spatial aspects of sediment deposition. Specifically, we apply a new environment of deposition model that interprets the Upper Miocene- Pliocene sediments as being deposited in a rapidly filling basin characterized by quick shelf edge progradation from the northwest toward the southeast. Reconstruction of this shelf edge trajectory reveals ...Saša Ivanišević, Dejan Radivojević. "Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)" in Interpretation, AAPG SEG (2018). https://doi.org/10.1190/INT-2017-0084.1
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Assessments of effects of implementation of strategic plans for development of Belgrade District heating system
The district heating system (DHS) is one of the key elements of the Belgrade energy system. Overview of the current state and basic characteristics of the DHS are presented in this paper. The focus is on the planned development of DHS and on the analyses of effects of realization of measures and projects defined by strategic documents related to DHS which are adopted by city authorities (Development Strategy of DHS and Strategy of Belgrade Development). Two exploratory scenarios were ...Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Miodrag Grujić. "Assessments of effects of implementation of strategic plans for development of Belgrade District heating system" in Sustainable Cities and Society, Elsevier BV (2020). https://doi.org/10.1016/j.scs.2020.102304
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Hibridni sistem za planiranje i analizu ventilacije rudnika
... primenjenu mehaniku, teoriju aproksimacija, numeričku analizu i računarsku nauku. Računska dinamika fluida (Computational Fluid Dynamics - CFD) omogućava analizu sistema koja se odnosi na procese strujanja fluida i prenosa toplote, a takođe, i uključivanje pojava kao što su na primer hemijske reakcije. CFD ...
... notacija Index About the book CHAPTER 3 MODELING OF AIR FLOW PROCESSES IN MINE CHAMBERS USING COMPUTATIONAL FLUID DYNAMICS Theoretical Foundations of Computational Fluid Dynamics………………………….43 What is CFD ? General Form of the Balance Equation Initial and Boundary Conditions State Equations ...
... Programming: Analysis and Methods", pp. 27-42., Prentice-Hall, Englewood Cliffs, (1976). 4. AZIZ N., SRINIVASA RAO B., BAAFI E., "Aplication of Fluid Dynamics codes to develop effective gas/dust control measures in underground coal mines", Australian Coal Journal, No 42, pp 19-27, (1993). 5. BANDOPADHYAY ...Nikola Lilić, Ranka Stanković, Ivan Obradović. Hibridni sistem za planiranje i analizu ventilacije rudnika, Rudarsko-geološki fakultet, Univerzitet u Beogradu, 2000
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Analogue modelling of strain partitioning along a curved strike-slip fault system during backarc-convex orocline formation: Implications for the Cerna-Timok fault system of the Carpatho-Balkanides
Nemanja Krstekanić, Ernst Willingshofer, Taco Broerse, Liviu Matenco, Marinko Toljić, Uroš Stojadinović (2021)... strike-slip faults: numerical results. Tectonophysics 721, 211–226. Weijermars, R., Schmeling, H., 1986. Scaling of Newtonian and non-Newtonian fluid dynamics without inertia for quantitative modelling of rock flow due to gravity (including the concept of rheological similarity). Phys. Earth Planet. ...
... exhumation of Romanian Carpathians: inferences from kinematic and thermochronological studies. In: Rădoane, M., Vespremeanu-Stroe, A. (Eds.), Landform Dynamics and Evolution in Romania. Springer Geography. Springer, pp. 15–56. Matenco, L., Schmid, S., 1999. Exhumation of the Danubian nappes system (South ...Nemanja Krstekanić, Ernst Willingshofer, Taco Broerse, Liviu Matenco, Marinko Toljić, Uroš Stojadinović. "Analogue modelling of strain partitioning along a curved strike-slip fault system during backarc-convex orocline formation: Implications for the Cerna-Timok fault system of the Carpatho-Balkanides" in Journal of Structural Geology, Elsevier BV (2021). https://doi.org/10.1016/j.jsg.2021.104386
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Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae
Hans Peter Nytoft, Geir Kildahl-Andersen, Sofie Lindström, Frode Rise, Achim Bechtel, Danica Mitrović, Nataša Đoković, Dragana Životić, Ksenija A. Stojanović (2019)Two previously unidentified dehydroabietane isomers were isolated from Miocene Serbian lignite and Rhaetian (Late Triassic) coaly mudstones from South Sweden and characterized using NMRspectroscopy as cis- and trans-dehydroicetexane. Both have a 9(10?20)-abeo-abietane or icetexane skeleton, consisting of a 6-7-6 tricyclic framework with seven carbons in ring B instead of the usual six in common diterpanes of the abietane-type. Dehydroicetexanes can be detected using GC-MS-MS in m/z 270?146 chromatograms without interference from dehydroabietane or other isomers. Dehydroicetexanes are often abundant ...Hans Peter Nytoft, Geir Kildahl-Andersen, Sofie Lindström, Frode Rise, Achim Bechtel, Danica Mitrović, Nataša Đoković, Dragana Životić, Ksenija A. Stojanović. "Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae" in Organic Geochemistry, Elsevier BV (2019). https://doi.org/10.1016/j.orggeochem.2019.01.001
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Structural dissymmetrization of optically anisotropic Grs64±1Adr36±1Sps2 grandite from Meka Presedla (Kopaonik Mt., Serbia)
In this paper, grandite core with Grs64±1Adr36±1Sps2composition was crystallographically studied. This core represents zone A of the macroscopically visiblefive A–E zones of the optically anisotropic Grs58–64 Adr36–42Sps2 grandite. The applied procedure includes the detailed analysis of the powder diffraction patterns, and the Rietveld refinements of the crystal structures in a series of 18 space groups and two mixtures, which were followed by the comparative analysis of the R-values, site occupancy factors, and the bond lengths and angles. Synthesis of all ...Pavle Tančić, Aleksandar Kremenović, Predrag Vulić. "Structural dissymmetrization of optically anisotropic Grs64±1Adr36±1Sps2 grandite from Meka Presedla (Kopaonik Mt., Serbia)" in Powder Diffraction, Cambridge University Press (CUP) (2019). https://doi.org/10.1017/S0885715619000897
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Age and microfacies of oceanic Upper Triassic radiolarite components from the Middle Jurassic ophiolitic mélange in the Zlatibor Mountains (Inner Dinarides, Serbia) and their provenance
Hans-Juergen Gawlick, Nevenka Đerić, Sigrid Missoni, Nikita Bragin, Milan Sudar, Divna Jovanović (2017)Neo-Tethys, trench-like basins, synorogenic deposition, evolving thrust belt, Triassic palaeogeography... 109—166. Stampfli G.M. & Kozur H.W. 2006: Europe from Variscan to the Alpine cycles. In: Gee D.G. & Stephenson R.A. (Eds.): Europaean Lithosphere Dynamics. Geo/ogica! Society Memoir 32, 57—82. Sudar M., Gawlick H.-J., Missoni S., Suzuki H., Jovanović D. & Lein R. 2010: The carbonatc-clastic radiolaritic ...Hans-Juergen Gawlick, Nevenka Đerić, Sigrid Missoni, Nikita Bragin, Milan Sudar, Divna Jovanović. "Age and microfacies of oceanic Upper Triassic radiolarite components from the Middle Jurassic ophiolitic mélange in the Zlatibor Mountains (Inner Dinarides, Serbia) and their provenance" in Geologica Carpathica (2017)
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The subthermal potential of karstic groundwater of Kučaj–Beljanica region in Serbia estimated by the multivariate analysis
Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeLjiljana Vasić, Dragana Ž. Živojinovic, Vladana Rajaković-Ognjanović, Huang Fen, Cao Jianhua. "The subthermal potential of karstic groundwater of Kučaj–Beljanica region in Serbia estimated by the multivariate analysis" in Environmental Earth Sciences, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s12665-021-09392-1
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Development of a petrographic classification system for organic particles affected by self-heating in coal waste. (An ICCP Classification System, Self-heating Working Group – Commission III)
M. Misz-Kennan, J. Kus, D. Flores, C. Avila, Z. Büçkün, N. Choudhury, K. Christanis, J.P. Joubert, S. Kalaitzidis, A.I. Karayigit, M. Malecha, M. Marques, P. Martizzi, J.M.K. O'Keefe, W. Pickel, G. Predeanu, S. Pusz, J. Ribeiro, S. Rodrigues, A.K. Singh, I. Suárez-Ruiz, I. Sýkorová, N.J. Wagner, D. Životić (2020)Self-heating of coal waste is a major problem in the leading coal-producing and consuming countries, independent of the recent or past coal exploitation history. The phenomenon of self-heating is dependent on many factors such as the properties of organic matter (maceral composition and rank), moisture and pyrite content, climate effects, and storage conditions (shape of the dump or compaction of the coal waste). Once deposited, coal waste undergoes oxidation, which can lead to self- heating with the overall temperatures ...M. Misz-Kennan, J. Kus, D. Flores, C. Avila, Z. Büçkün, N. Choudhury, K. Christanis, J.P. Joubert, S. Kalaitzidis, A.I. Karayigit, M. Malecha, M. Marques, P. Martizzi, J.M.K. O'Keefe, W. Pickel, G. Predeanu, S. Pusz, J. Ribeiro, S. Rodrigues, A.K. Singh, I. Suárez-Ruiz, I. Sýkorová, N.J. Wagner, D. Životić. "Development of a petrographic classification system for organic particles affected by self-heating in coal waste. (An ICCP Classification System, Self-heating Working Group – Commission III)" in International Journal of Coal Geology, Elsevier BV (2020). https://doi.org/10.1016/j.coal.2020.103411
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Evidence for Ladinian (Middle Triassic) platform progradation in the Gyulakeszi area, Tapolca Basin, Western Hungary: Microfacies Analysis and Biostratigraphy
Zsolt Robert Nagy, Nevenka Đerić, Sándor Kovács, Anna Oravecz-Scheffer, Felicitász Velledits, Olga Piros, Gabor Csillag (2014)... geometries of carbonate Platforms: examples from the Triassic of the Dolo- mites, Northern Italy. Sedizmentology, 31: 1-24. Bosellini A. (1989) - Dynamics of Tethyan carbonate plat- forms. In: Crevello P.D., Sarg J.E & Read J.E. (Eds) – Controls on carbonate platform and basin develop- ment. Soc ...
... and Ombrettola platforms in the Dolomites resulted from the sealing effect of the low- permeability Ladinian volcanics preventing dolomitiz- ing fluid from circulating through these units. The ab- sence of Ladinian volcanics (“\/engen”) in the succes- sions of the Balaton Highland is well known ...Zsolt Robert Nagy, Nevenka Đerić, Sándor Kovács, Anna Oravecz-Scheffer, Felicitász Velledits, Olga Piros, Gabor Csillag. "Evidence for Ladinian (Middle Triassic) platform progradation in the Gyulakeszi area, Tapolca Basin, Western Hungary: Microfacies Analysis and Biostratigraphy" in Rivista Italiana di Paleontologia e Stratigrafia (2014)
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Tektonska evolucija istočne periferije timočke eruptivne oblasti
Stefan Zujić (2024)U radu su predstavljeni rezultati proučavanja tektonskih i litostratigrafskih karakteristika istočnog oboda Timočke eruptivne zone. Zaključci o geološkim odnosima u okviru Timočke eruptivne oblasti i susednih geotektonskih jedinica izvedeni su na osnovu podataka prikuljenih tokom terenskih istraživanja i podataka dobijenih iz publikovanih radova. Rezultati rada ukazuju da je teren koji je bio tema ovog istraživanja, u strukturno-tektonskom smislu oblikovan tokom glavnih geodinamičkih događaja u okviru Karpato-balkanskog orogenog luka. Analizom strukturnog sklopa su utvrđeni glavni deformacioni događaji koji su predsavljeni ...Stefan Zujić. Tektonska evolucija istočne periferije timočke eruptivne oblasti, 2024
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Tectonic evolution of the Circum-Moesian orocline of the Carpatho-Balkanides: Paleomagnetic constraints
Emő Márton, Vesna Cvetkov, Miodrag Banješević, Gábor Imre, Aleksandar Pačevski. "Tectonic evolution of the Circum-Moesian orocline of the Carpatho-Balkanides: Paleomagnetic constraints" in Journal of Geodynamics, Elsevier BV (2024). https://doi.org/10.1016/j.jog.2024.102058
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Sistem poslovne inteligencije za upravljanje zaštitom na radu u rudarskoj industriji
Ljiljana R. Kolonja (2016-09-23)Postojeća organizacija zaštite na radu na površinskim kopovima uglja često nije umogućnosti da blagovremeno i tačno ukaže na nedostatke, koji mogu u bližoj ilidaljoj budućnosti da budu uzrok narušavanja bezbednosti radnika, ali i uzrokoštećenja materijalnih dobara rudnika. Nemogućnost donošenja pravovremenihodluka je moguće izbeći uvođenjem softverski podržanih sistema za praćenje ianalizu bezbednosti i zaštite na radu.Osnovni cilj ove doktorske disertacije je definisanje metodologije i razvoj modelasistema upravljanja zaštitom na radu, koji će omogućiti savremen, adekvatan isveobuhvatan način praćenja i analize ...... SCHIUMA, G. 2011. Managing and Measuring Knowledge Assets Dynamics for Business Value Creation in Organisations. Managing Knowledge Assets and Business Value Creation in Organizations: Measures and Dynamics: Measures and Dynamics, IGI‐Global, Hershey, PA, USA., 13‐29. SEA. 1985. Single European ...Ljiljana R. Kolonja. "Sistem poslovne inteligencije za upravljanje zaštitom na radu u rudarskoj industriji" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-09-23)