Претрага
311 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 ...... sand migration and gravel pack damage: Stress-induced formation damage, sanding tendency, and prediction, Reservoir Formation Damage (Second Edition), 814-828. Codas A., Camponogara E. (2012) Mixed-integer linear optimization for optimal gas lift allocation with well-separator routing, European ...
... A., Dhurjati Prasad C., Angelus P., Sastry M.K.S., (2013) Wax formation in oil pipelines: A critical review, International Journal of Multiphase Flow, 37, 671– 694. 85 Ariweriokuma, S. (2008), Political Economy of Oil and Gas in Africa, the Routledge Studies in International Business and ...
... (2004) Study of the paraffin deposit formation using the cold finger methodology for Brazilian crude oils, J. Petrol. Sci. Eng, 45 47– 60. Santos O.G., Bordalo S.N., Alhanati F.J.S., (2001) Study of the dynamics, optimization and selection of intermittent gas-lift methods—a comprehensive model ...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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Application of Lignite Combustion Waste Slag Generated in Heating Plants as a Partial Replacement for Cement. Part II: Physical–Mechanical and Physical–Chemical Characterization of Mortar and Concrete
Milan Kragović, Nenad Ristić , Jelena Gulicovski, Andrijana Nedeljković, Snežana Pašalić, Ivica Ristović, Marija Stojmenović (2021)sagorevanje lignita, otpadna šljaka, zamena cementa, proizvodnja maltera i betona, fizičko-mehanička i fizičko-hemijska karakterizacija... fossil fuel for centuries. The world’s known coal reserves are much greater than those of gas and oil which means that it will be dominant in energy supply in the subsequent years [1–3]. Depending on the time of formation, coal can be classified as anthracite, bituminous coal, and lignite [4]. Lignite is a ...
... fossil fuel for centuries. The world’s known coal reserves are much greater than those of gas and oil which means that it will be dominant in energy supply in the subsequent years [1-3]. Depending on the time of formation, coal can be classified as anthracite, bituminous coal, and lignite [4]. Lignite is a ...
... except those which originated from starting samples were not detected by XRD. However, although this has not been determined in our research, the formation of new phases when waste material was used as a replacement or addition to cement was possible. For example, J. Seo et al. [24] showed that when blast ...Milan Kragović, Nenad Ristić , Jelena Gulicovski, Andrijana Nedeljković, Snežana Pašalić, Ivica Ristović, Marija Stojmenović . "Application of Lignite Combustion Waste Slag Generated in Heating Plants as a Partial Replacement for Cement. Part II: Physical–Mechanical and Physical–Chemical Characterization of Mortar and Concrete" in Minerals, MDPI (2021). https://doi.org/10.3390/min11090925
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Regionalno-geološke karakteristike miocenskih sedimenata na prostoru severnog Banata
Dejan N. Radivojević (2014-12-30)Predmet doktorske disertacije predstavljalo je rešavanje strukturno‐stratigrafskihodnosa miocenskih sedimenata na prostoru severnog Banata. U cilju regionalnogsagledavanja, korišćeni su svi raspoloživi geofizički i geološki podaci sa širegistražnog područja, odnosno iz celog Panonskog basena i susednog orogena. Osimklasičnih metoda primenjene su i savremene metode seizmostratigrafije,tektonostratigrafije i riftne sekvencione stratigrafije. Primenjene metode omogućilesu izradu modela progradacije ivice šelfa za ceo Panonski basen, modela uzajamnihveza između basena i geodinamičkog modela jugoistočnog oboda basena.Jezero Panon je većim delom zapunjeno prilivom sedimenata paleo‐Dunavom saseverozapada, odnosno ...Centralni Paratetis, Panonski basen, miocen, jezero Panon,seizmostratigrafija, sekvenciona stratigrafija, paleogeografija, geodinamika... 500 m) bušotina, konstatovan je aktivni zapunjeni ugljovodonični sistem. Sistem uključuje shale oil i gas plej (basin center gas) unutar panonskih šejlova (Endred formacije) i tight gas play u turbiditskim panonskim i donjopontskim peščarima (Solnok i Alđe formacije). Osim u Mađarskoj ...
... različitih tektonskih jedinica u podlozi neogenih sedimenata. Na prostoru severnog Banata otkriven je velik broj komercijalnih ležišta nafte i gasa, što čini ovo područje ekonomski značajnim. Najvažniji deo ugljovodoničnog sistema čine miocenski sedimenti koji predstavljaju glavne matične, rezervoar ...
... institucijama (univerziteti Oklahoma, Vrije – Amsterdam, Utreht) i naftnim kompanijama (NIS Gasprom njeft, MND, MOL, RAG, Falcon Oil & Gas Ltd., East West Petroleum, Shell). Uvod 3 Srpski deo Panonskog basena predstavlja istraženu provinciju s velikim brojem vi ...Dejan N. Radivojević. "Regionalno-geološke karakteristike miocenskih sedimenata na prostoru severnog Banata" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-12-30)
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Proračun recirkulacionih pumpi u postrojenju za odsumporavanje dimnih gasova ,,TENT B"
Tomislav Trpković (2024)Predmet ovog rada baziraće se na proračunu i usvajanju mašinskih instalacija potrebnih za nesmetano funkcionisanje sistema dve međusobno povezane celine Absorber - Pumpna stanica, preko FRP ( Fiberglass Reinforced Plastic) cevovoda kojim se odvija transport suspenzije krečnjaka neophodnog u samom procesu odsumporavanja dimnih gasova. Pored tehničkog opisa same tehnologije koja uključuje tri objekta: Absorber, Pumpna Stanica i cevovod, glavni deo rada odnosiće se na proračun i usvajanje mašinskih instalacija koji uključuju recirkulacione radijalne centrifugalne pumpe i cevovode kojima ...postrojenje za odsumporavanje dimnih gasova, termoelektrana, pumpna stanica, FRP cevovod, Absorber, transport suspenzije gipsa, prirubnica, ventil, potisni cevovod, usisni cevovod... dimnog gasa Parametri dimnog gasa na ulazu u sistem ODG prikazani su u tabeliTabela 2.1 Tabela 2.1 Parametri dimnog gasa i “ Blok BIJ Blok · Bž Opis Jedinica mere Absorber Absorber Protok dimnog gasa na ulazu u ODG (vlažno) Nm#?/h, vlažno 3.950. 3.95 044 0.04 4 Protok dimnog gasa na ulazu ...
... postrojenje. Dimni gasovi nakon izlaska iz kotla prolaze kroz regenerativni zagrejač vazduha, a potom se dimnim kanalima usmeravaju ka elektrofilterskom postrojenju i dimnjaku pomoću ventilatora dimnih gasova. Svaki blok ima instalirana po dva ventilatora dimnih gasova. Dimni gasovi iz blokova B1 ...
... suvo 3.063. 3.06 259 3.25 9 Pritisak dimnog gasa na ulazu u ODG mbar -2.90 - 2.90 Projektni pritisak postojećeg sistema dimnog gasa mabr 2.55 2.55 Temperatura dimnog gasa na ulazu u ODG oC 180 80 Projektna temperatura postojećeg sistema dimnog gasa oC 190 90 H.O vol% 22,45 22,4 5 O> vol% ...Tomislav Trpković. Proračun recirkulacionih pumpi u postrojenju za odsumporavanje dimnih gasova ,,TENT B", 2024
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Српски језик у дигиталном добу -- The Serbian Language in the Digital Age
Duško Vitas, Ljubomir Popović, Cvetana Krstev, Ivan Obradović, Gordana Pavlović-Lažetić, Mladen Stanojević (2012)... frowned upon by language purists, as something that is not characteristic of au- thentic Štokavian word formation. is attitude com- plicates lexical and terminological elaboration through word formation, and is one of the reasons for the very large number of borrowings. Borrowings fit into existing mo ...
... Meri (Mary) or sko (squaw), or the adjectives fer (fair) or braon (brown). Well developed word formation (suffixation, prefixa- tion, and, to a lesser extent, composition and various combined word formation processes) results in the fact that the majority of lexemes can be grouped into word families, ...
... (rising : falling). e distri- bution of rising and falling accents follow special rules. Accentual alternations are common in inflection and word formation. As accent marks are not used, written texts contain homographs. For example lukwith a short falling accentmeans “onion”, whereas with a long falling ...Duško Vitas, Ljubomir Popović, Cvetana Krstev, Ivan Obradović, Gordana Pavlović-Lažetić, Mladen Stanojević. "Српски језик у дигиталном добу -- The Serbian Language in the Digital Age" in META-NET White Paper Series, G. Rehm, H. Uszkoreit (eds.), Springer (2012)
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From DELA Based Dictionary to Leximirka Lexical Database
Biljana Lazić, Mihailo Škorić (2020)In this paper, we will present an approach in transforming Serbian language Morphological dictionaries from a DELA text format to a lexical database dubbed Leximirka. Considering the benefits of storing data within a database when compared to storing them in textual documents, we will outline some of the functionality that the database has made possible. We will also show how hand-made rules that use category labels lexical entries are marked with can be used to link lexical entries. ...... 5 Lemon 84 Infotheca Vol. 19, No. 2, December 2019 Scientific paper The LMF prescribes a standardized framework for recording linguistic in- formation in computer lexicons and is based on the Standard ISO 24613: 2008 (Language Resource Management - Lexical Markup Framework - LMF). LMF is designed ...
... entry “bibliotekarski” (like librarian). The LexProperties table is used to store the values of markers assigned at the lexical entry level. In- formation about the complete lexical entry (lexical entry identifier, lemma, canonical form, record type, part of speech, morphological class, etc.) is in the ...Biljana Lazić, Mihailo Škorić. "From DELA Based Dictionary to Leximirka Lexical Database" in Infotheca, Faculty of Philology, University of Belgrade (2020). https://doi.org/10.18485/infotheca.2019.19.2.4
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Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)
... Environnement, Universitć de Genčve, 1205 Geneva, Switzerland is limited to spaced and crenulation cleavage, which are probably related to formation of large-scale open upright folds as reported previously. “Ar/Ar thermochronology was applied on hornblende, muscovite, and biotite sam- ples ...
... developed at a high angle to S, (Fig. 10d). The difference in orientation of strain axes during the deformation stages D, and D, resulted in the formation of folded drawn boudin trains in Ordovician meta-argillites (Fig. 11). The boudin trains were initially formed in the extensional domain of ...
... intrusion in the Bujanovac magmatic complex (Antić et al. 2015b). Therefore, this regional extensional event was most probably responsible for the formation of the shear zone in Božica area, whereas the evolution of this area since the end of Variscan orogeny until the Middle Triassic remains unresolved ...Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Richard Spikings, Andreas Wetzel. "Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)" in International Journal of Earth Sciences, Springer Science and Business Media LLC (2016). https://doi.org/10.1007/s00531-016-1380-6
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Clockwise vertical-axis rotation in the West Vardar zone of Serbia: Tectonic implications
The Vardar-Tethyan mega-suture between the Eurasian and Adria (Gondwana) margins comprises remnants of oceanic lithosphere of Neotethys and distal parts of the adjacent continental margins including unconformable Late Cretaceous sedimentary cover and Cenozoic igneous rocks of post-obduction age. This study provides kinematic constraints for displacements and rotations affecting the Serbian part of the West Vardar and Jadar-Kopaonik units after the closure of the Neotethyan (= Sava) Ocean. The targets of the paleomagnetic research were Late Cretaceous sediments representing an ...... immediately west of the Sava suture (Fig. 1). The sampled Upper Cretaceous lithologies formed during the closure of the Sava Ocean, while the formation of the Cenozoic lithologies post-dated collision between Adria and Europe (Cvetković et al. 2016a). The older substratum on which the Cretaceous ...
... direct interest for the interpretation of our results, therefore only a few important events will be high- lighted. These are: (1) rifting stage and formation of ophio- lites starting in the Late Anisian, (2) obduction of the West Vardar ophiolites over Adria-derived units (e.g. the Jadar– Kopaonik unit) ...
... boundary (Schmid et al. 2008). After the final closing of the Sava suture, different tectono-magmatic conditions led to widespread magmatism and formation of continental sedimentary basins (Cvetković et al. 2016a). The targets of this study are limestones and marls (Turonian–Maastrichtian) as well ...Vesna Lesić, Emo Márton, Violeta Gajić, Dragana Jovanović, Vesna Cvetkov. "Clockwise vertical-axis rotation in the West Vardar zone of Serbia: Tectonic implications" in Swiss Journal of Geosciences, Basel : Springer International Publishing (2018). https://doi.org/10.1007/s00015-018-0321-8
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Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept
Improvements of Machine Learning-based landslide prediction models can be made by optimizing scale, customizing training samples to provide sets with the best examples, feature selection, etc. Herein, a novel approach, named Cross-Scaling, is proposed that includes the mixing of training and testing set resolutions. Hypothetically, training on a coarser resolution dataset and testing the model on a finer resolution should help the algorithm to better generalize ambiguous examples of landslide classes and yield fewer over/underestimations in the model. This ...Uroš Đurić, Miloš Marjanović, Zoran Radić, Biljana Abolmasov. " Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept" in Engineering Geology , Elsevier (2019). https://doi.org/10.1016/j.enggeo.2019.05.007
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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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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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Dosadašnja saznanja o bijelim boksitima na prostoru Crne Gore
Mia Jovanović, Slobodan Radusinović, Vladimir Simić. "Dosadašnja saznanja o bijelim boksitima na prostoru Crne Gore" in Geološki glasnik (2023)
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Hydrochemical features and their controlling factors in the Kucaj-Beljanica Massif, Serbia
Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeFen Huang, Ljiljana Vasic, Xia Wu, Jianhua Cao, Saša Milanovic. "Hydrochemical features and their controlling factors in the Kucaj-Beljanica Massif, Serbia" in Environmental Earth Sciences, Springer Science and Business Media LLC (2019). https://doi.org/10.1007/s12665-019-8452-4
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Application of Gel for Water Shutoff: A Case Study of Kelebija Oil Field
This paper focuses on the results of water shutoff operations using DSGA polymer gel in the Kelebija oil field. The methodology of candidate wells selection and the manner of performing the operation will also be included. The Kelebija oil field is characterized by a complex reservoir system with heterogeneous layers of different permeability and dual porosity, which led to the early breakthrough of water. For the last 25 years, average water cut was above 90%. Implementation of water shutoff ...intervención de pozos petroleros, reservoir characterization, production control, well logging, downhole intervention, enhanced recovery, complex reservoir, reservoir surveillance, water shut-off, upstream oil & gasIrina Zahirovic, Petar Skrobonja, Dušan Danilović. "Application of Gel for Water Shutoff: A Case Study of Kelebija Oil Field" in SPE Production & Operations, SPE (2022). https://doi.org/10.2118/209590-PA
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Development Of The Serbian Geological Resources Portal
... associated geographic services via the Internet. MEMSP, as the geologic information provider for Serbia, is using the geo-portal to publish geologic in- formation, while information consumers, professional or lay, use geo-portals to search and access the informa- tion they need. Thus geo-portals have an increasingly ...Ranka Stanković, Jelena Prodanović, Olivera Kitanović, Velizar Nikolić. "Development Of The Serbian Geological Resources Portal" in Proceedings of the 17th Meeting of the Association of European Geological Societies, Belgrade, Serbia : The Serbian Geological Society (2011)
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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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Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes
... composition; disturbance of soil stability; land subsidence; disposal of tailings, ash, and slag; and delivery of coal dust and ash through airflow and gas emissions from coal combustion. Wastewaters in the abandoned surface mines and deep mines lead to pollution of the surrounding land and the absence of ...
... c filters in block B1 in TPP “Kostolac B” were reconstructed. In the thermal power plant “Kostolac B”, in blocks B1 and B2, the final phase of flue gas desulfurization plant construction is in progress, with the aim to reduce emissions of sulfur and nitrogen oxide below 200 mg/Nm3 [15–17]. Preparations ...
... Improper disposal of tailings A4 Inadequate disposal of sludge Irregular sprinkling of ash landfill Transportation of coal and tailings Exhaust gas emissions during the transportation of coal with trucks A5 Dust emissions during transportation of coal with conveyor belts Analysis of the impact ...Jelena Malenović Nikolić, Dejan Vasović , Ivana Filipović , Stevan Mušicki, Ivica Ristović . "Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes" in Energies (2016). https://doi.org/https://doi.org/10.3390/en9121071
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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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Минерагенија зеолитских туфова Србије
Vladan Kašić (2018-02-05)Лежишта наших зеолитских туфова (Златокоп, Игрош, Јабланица 1, Беочин, Топоница и Сланци) која су овде била предмет детаљних истраживања, просторно и генетски везана су за вулканске и вулканокластичне стене маринских средина сенонске и неогенске старости и језерске седименте неогене старости и настала су као продукт девитрификације вулканског стакла.Током лабораторијских испитивања при изради ове докторске дисертације, примењене су следеће аналитичке методе: оптичка испитивања петрографских препарата; рендгенска дифракција праха (XRD); скенирајућа електронска микроскопија (СЕМ метода); хемијска карактеризација зеолитских туфова у оквиру ...... примену за адсорпцију влаге, гасова и непријатних мириса у стајама (NH3, CO2). Аклеј са сарадницима у свом раду (Ackley et al., 2003) констатује да се зеолити, због способности да адсорбују поларна једињења, сматрају као материјал за одвајање и пречишћавање гасова. Упркос томе, комерцијална употреба ...
... зеолита у пречишћавању гасова је мала у поређењу са синтетичким зеолитима и другим адсорбенатима. Историјски гледано, на Првој међународној конференцији о природном зеолиту, одржаној у Аризони 1976. године, природни зеолити су предложени као материјал за пречишћавање гаса и ваздуха. Само 121 ...
... активираних зеолита да адсорбују много гасова на селективној основи делом одређује величина канала у распону од 2,5 до 4.3 Å у пречнику (према типу зеолита). Специфична величина канала омогућава зеолиту да делује као молекуларно сито и селективно адсорбује гасове као што су амонијак, водоник сулфид ...Vladan Kašić. "Минерагенија зеолитских туфова Србије" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2018-02-05)
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Stratigraphy and microfossils (radiolarians and planktonic foraminifers) of the Upper Cretaceous (upper Santonian–lower Campanian) Struganik limestone (Western Serbia)
Liubov G. Bragina, Nikita Yu. Bragin, Ludmila F. Kopayevich, Nevenka Đerić, Nataša Gerzina Spajić (2019)Liubov G. Bragina, Nikita Yu. Bragin, Ludmila F. Kopayevich, Nevenka Đerić, Nataša Gerzina Spajić. "Stratigraphy and microfossils (radiolarians and planktonic foraminifers) of the Upper Cretaceous (upper Santonian–lower Campanian) Struganik limestone (Western Serbia)" in Palaeoworld, Elsevier BV (2019). https://doi.org/10.1016/j.palwor.2019.05.001