Претрага
500 items
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Analiza softvera za projektovanje ESP sistema
Aleksandar Sredojević (2024)U momentu kada pritisak na dnu bušotine nije dovoljan da savlada ukupne gubitke pritisaka od dna bušotine do separatora, proizvodnja pomoću ležišne energije nije više moguća i bušotina prestaje sa eruptivnim radom. Kako bi ponovo omogućili proizvodnju fluida iz bušotine, potrebno je primeniti neke od mehaničkih metoda eksploatacije. Najprimenljivije mehaničke metode eksploatacije su: gas lift (GL), dubinske pumpe sa klipnim šipkama (SRP), električne uronjene centrifugalne pumpe (ESP), zavojne pumpe (PCP) i hidraulične pumpe (HP). Jadna od tih metoda koja ...električna centrifugalna pumpa (ESP), proizvodnja fluida, mehaničke metode eksploatacije, Prosper, Pipesim... Slobodan, (2010). „Efikasnost primene sistema potopljenih centrifugalnih pumpi na poljima NIS Naftagas-a“; Novomet, „Powersave ESP Systems“, URL: Powersave ESP Systems (30.08.2024); Paul M., Bommer & A., L., Podio, (2015). „The Beam Lift Handbook“ The University of Texas at Austin; Petroleum ...
... Vertical Oil Wells“; Abdlunebi Jasim Kaiser, „ESP Design Electric Submersible Pumps“; Amao Matthew, (2014). „Electrical Submersible Pumping (ESP) Systems“; American Petroleum Institute (1997). „Recommended practice for electric submersible pump testing: API RP 11S2. 2nd ed.“; Artificial Lift Research ...
... Edition“, Centrilift, Claremore, Oklahoma; Breit, S., Ferrier N., (2008). „Electrical Submersible Pumps in the Oil and Gas Industry - Using ESP systems for artificial lift“; Bultur _ R., Duran, J., Prado, M. & Pessoa R., (2003). „Analysis of Experimental Data of ESP Performance Under Two-Phase ...Aleksandar Sredojević. Analiza softvera za projektovanje ESP sistema, 2024
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The interaction of organoselenium trans-palladium(II) complexes toward small-biomolecules and CT-DNA
Serija organoselenijum trans-paladijum(II) kompleksa 1 (bis(2-(fenilselanilmetil)oksolan)dihloropaladijum(II)), 2 (bis(2-(fenilselanilmetil)oksan)dihloropaladijum(II)) i 3 (bis(2) ,2-dimetil-3-(fenilselanil)oksan)dihloropaladijum(II)) su korišćeni za ispitivanje reaktivnosti ovog specifičnog tipa kompleksa prema različitim bio-molekulima. Ovaj sistem je od posebnog interesa jer se jako malo zna o supstitucionim reakcijam organoselenijum paladijum(II) kompleksa sa trans konfiguracijom. Zamena koordinovanog hlorida sa serijom malih bio-molekula (l-Met, l-His, l-Cis, GSH i 5′-GMP) proučavana je pod uslovima pseudo-prvog reda kao funkcija koncentracije nukleofila i temperature korišćenjem tehnika zaustavljenog toka. Rezultati za proučavane komplekse ukazuju da ...Vera M. Divac, Aleksandar Mijatović, Marina D. Kostić, Jovana Bogojeski. "The interaction of organoselenium trans-palladium(II) complexes toward small-biomolecules and CT-DNA" in Inorganica Chimica Acta, Elsevier BV (2017). https://doi.org/10.1016/j.ica.2017.07.012
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Vebran Web Services for Corpus Query Expansion
Ranka Stanković, Miloš Utvić (2020)U ovom radu se govori o razvoju veb usluga Vebran i njihovoj primeni u poboljšanju pretraživanja korpusa. Veb-servisi Vebran koriste se za konsultovanje spoljnih leksičkih izvora za srpski jezik (uglavnom elektronski morfološki rečnici i srpski Vordnet) i proširivanje korisničkih upita radi dobijanja relevantnijih rezultata iz srpskih korpusa.... external lexical resources and produce regular expressions that improve re- call of the retrieved inflected forms for a given lemma. The described hybrid approach was successfully tested by modifying the web interface of corpus search tools OCWB and NoSketch Engine. Vebran web services are currently ...
... lexical masks, new semantic markers relevant to the field of mining have been integrated (Обрадовић et al., 2017). 2.3 Corpora tools Three different systems for diverse types of usage scenarios are used in this research: – Unitex (Paumier, 2016; Krstev, 2008); – Open Corpus Workbench (OCWB) (Evert and ...
... corpus processor with user-friendly interface, language resources distributed out-of- the-box and set of functions that can be used from other software systems. The Unitex NLP engine is based on automata-oriented technology, allowing users to 1) Compile rules and dictionaries as finite-state machines; 2) Use ...Ranka Stanković, Miloš Utvić. "Vebran Web Services for Corpus Query Expansion" in Infotheca, Faculty of Philology, University of Belgrade (2020). https://doi.org/10.18485/infotheca.2019.19.2.5
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Природни потенцијал минералних вода Србије - Natural potential of mineral waters in Serbia
Оливера Крунић (2021)Оливера Крунић. "Природни потенцијал минералних вода Србије - Natural potential of mineral waters in Serbia" in Рационално коришћење земљишта и вода у Србији - Sustainable Use of Land and Water in Serbia- Serbian Academy of Sciences and Arts; Scientific Conferences Volume CXCVII; Department of Chemical and Biological Sciences, Book 19, Српска академија наука и уметности (2021)
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Ontološki model upravljanja rizikom u rudarstvu
Olivera Kitanović (2021)Rudarska proizvodnja obuhvata kompleksne tehnološke sisteme, što nameće potrebu za uspostavljanjem i unapređivanjem sistema upravljanja rizikom. Heterogenost i obim podataka neophodnih za upravljanje rizikom zahtevaju sistem koji ih na fleksibilan način integriše i omogućava njihovo optimalno korišćenje. Osnovni cilj ove disertacije je razvoj ontologije za domen rudarstva i na njoj zasnovanog modela za upravljanje rizikom. Njegova realizacija podrazumeva i implementaciju algoritama ekstrakcije informacija za popunjavanje ontologije, kao i odgovarajuće softversko rešenje. Razvoj modela obuhvata i značajno proširenje rudarskog korpusa, kao ...rudarstvo, rizik, upravljanje rizikom, procena rizika, ontologija, semantička mreža, ekstrakcija informacija, upravljanje znanjem, računarska lingvistika... Radosavljević. 2009. “Risk Assessment and Managing Technical Systems in Case of Mining Industry.” Strojniški Vestnik-Journal of Mechanical Engineering 55 (2): 119–13. Lilić, Nikola, Ivan Obradović, and Aleksandar Cvjetić. 2010. “An Intelligent Hybrid System for Surface Coal Mine Safety Analysis.” Engineering ...
... ONTOLOGY-BASED MODEL FOR RISK MANAGEMENT IN MINING Abstract Mining production involves complex technological systems, which calls for the need to create and improve risk management systems. The heterogeneity and scope of data necessary for risk management require a system that integrates them in a ...
... International Journal of Intelligent Engineering and Systems 12 (2): 170–81. Alanen, Jarmo, Iiro Vidberg, Heikki Nikula, Nikolaos Papakonstantinou, Teppo Pirttioja, and Seppo Sierla. 2011. “Engineering Data Model for Machine Automation Systems.” Allan, G. M., N. D. Allan, V. Kadirkamanathan, and P ...Olivera Kitanović. Ontološki model upravljanja rizikom u rudarstvu, Beograd : [O. Kitanović], 2021
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Optimisation of underground mine decline development system using genetic algorithm
... Gligorić Z.; Ganić A.; Tokalić R.; Milutinović A. REFERENCES 1 ALI, F.A. (2014) A novel hybrid genetic differential evolution algorithm for constrained optimization problems. International Journal of Advanced Computer Science and Applications ...
... When deposit is composed of few ore bodies it is necessary to interconnect them into one integrated system. There are different development systems (shaft, decline, adit) which can be used to create such system. Suppose the deposit characteristics indicate that decline development system is ...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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Energetska efikasnost elektromotora na površinskim kopovima
Snežana Aleksandrović, Ilija Jeftenić (2023)Snežana Aleksandrović, Ilija Jeftenić. "Energetska efikasnost elektromotora na površinskim kopovima" in 11. Međunarodna konferencija “Ugalj i kritični materijali" CCM 2023, Zlatibor, 11-14. oktobar 2023. , Beograd : Jugoslovenski komitet za površinsku eksploataciju (2023)
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A multi-criteria approach for assessing the potential of renewable energy sources for electricity generation: Case Serbia
When assessing the potential of renewable energy alternatives for electricity generation, it is necessary to implement a multi-perspective approach that includes economic, technical, environmental, and socio-political criteria. For the evaluation of criteria and alternatives, the Fuzzy Analytical Hierarchy Process (FAHP) method is applied. The obtained weights are formed according to the values of energy indicators and expert judgments. The use of a fuzzy numerical value scale for the assessment of expert judgments and energy indicators provides a more sensitive ...... 120352. Rathi, R., Prakash, C., Singh, S., Krolczyk, G., Pruncu, C.I., 2020. Measurement and analysis of wind energy potential using fuzzy based hybrid MADM approach. Energy Rep 6 (2020), 228–237. Ren, J., Sovacool, B.K., 2014. Enhancing China’s energy security: Determining influential factors and ...
... fossil fuels to one that increases the efficiency and share of renewables (IRE, 2018). A transition to- wards long-term sustainability in global energy systems based on renewable energy sources (RESs) can simultaneously miti- gate issues such as greenhouse gas emissions, pollution, and the exceeding of critical ...
... renewable energy sources have become a powerful and cost- effective source for electricity generation. The costs of the imple- mentation of RESs in energy systems are substantially reduced so in some regions of the U.S and Europe, electricity from RESs could become cheaper than electricity produced from traditional ...Boban Pavlović, Dejan Ivezić, Marija Živković. "A multi-criteria approach for assessing the potential of renewable energy sources for electricity generation: Case Serbia" in Energy Reports, Elsevier BV (2021). https://doi.org/10.1016/j.egyr.2021.02.072
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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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An Integrated Environment for Management and Exploitation of Linguistic Resources
Ranka Stanković, Ivan Obradović (2009)... became more and more frequently used. Thus two new systems, Unitex [8] and Nooj [9] were developed, both allowing the processing of texts in Unicode, and subse- quently started to suppress Intex. Although text processing in all three systems is based on dictionaries in LADL for- mat, none of ...Ranka Stanković, Ivan Obradović. "An Integrated Environment for Management and Exploitation of Linguistic Resources" in Proceedings of the International Multiconference on Computer Science and Information Technology, Computational Linguistics – Applications Workshop (CLA09), Mrągowo, Poland, October 2009, Piscataway : IEEE (2009)
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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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Contribution to the geotechnical classification of municipal waste landfills in Serbia
Management, Monitoring, Policy and Law, Nature and Landscape Conservation, Geochemistry and Petrology, Waste Management and Disposal,Geotechnical Engineering and Engineering Geology,Water Science and Technology,Environmental Chemistry,Environmental EngineeringDragoslav Rakić, Irena Basarić, Laslo Čaki, Slobodan Ćorić. "Contribution to the geotechnical classification of municipal waste landfills in Serbia" in Environmental Geotechnics, Thomas Telford Ltd. (2018). https://doi.org/10.1680/jenge.18.00028
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The external aggregation Newton's method for solving nonlinear equations and applications
Marija Paunović, Dejan Ćebić, Nebojša Ralević. "The external aggregation Newton's method for solving nonlinear equations and applications" in The University Thought - Publication in Natural Sciences, Centre for Evaluation in Education and Science (CEON/CEES) (2020). https://doi.org/10.5937/univtho10-24982
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Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining
... “in situ” working conditions of mining, i.e., cutting. Keywords: cutting resistance; underwater mining; coal 1. Introduction Continuous mining systems, including bucket-wheel excavators (BWE) and bucket- wheel dredges (BWD), have been used in high-volume mining operations for decades. These excavators ...
... “in situ” working conditions of mining, i.e., cutting. Keywords: cutting resistance; underwater mining; coal 1. Introduction Continuous mining systems, including bucket-wheel excavators (BWE) and bucket- wheel dredges (BWD), have been used in high-volume mining operations for decades. These excavators ...Vladimir Čebašek, Veljko Rupar, Stevan Đenadić, Filip Miletić. "Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining" in Minerals, MDPI AG (2021). https://doi.org/10.3390/min11060564
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Mineral Resources of Serbia: Environmental, Societal and Economic Challenges
... Serbia "Institute of Field and Vegetable Crops, Novi Sad, Serbia ŠInstitute for Forage Crops, Globoder, Krusevac, Serbia ABSTRACT Triticale is a hybrid small grain produced by crossing wheat and rye. The name combines the scientific names of the two crop species, wheat (77ificum) and rye (Secale) ...
... Triticale Bio-refinery Initiative (CTBI) was established to develop triticale as a dedicated industrial bio-fuel feedstock crop. Triticale is a hybrid small grain produced by crossing wheat and rye. The name combines the scientific names of the two crop species, that is, wheat (77ificam) and rye ...
... 105-115. Ikanovic, J., Popovic, V., Trkulja. V., Zivanovic, LJ., Lakic, Z. and Pavlovic, S. (2013). Morphological characteristics of the interspecies hybrid between sorghum and sudan grass under intensive nitrogen nutration. Genefics, Belgrade, 45 (1), 31-40. Jelić, M., Đekić, V., Đalović, 1., Dugalić ...Vladimir Simić, Rade Jelenković, Dragana Životić. "Mineral Resources of Serbia: Environmental, Societal and Economic Challenges" in Serbia: Current Issues and Challenges in the Areas of Natural Resources, Agriculture and Environment,, Nova Science Publishers, Inc. (2019)
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Методологија интегралне анализе сценарија енергетског развоја
Александар Маџаревић (2019)енергетска безбедност, сценарио развоја, фази логика, сигурност снабдевања, доступност, расположивост, природни гас... Weber, K., Martinsen, D., From system cost minimization to sustainability maximization—A new fuzzy program approach to energy systems analysis, Fuzzy Sets and Systems, 2013, Volume 231, pp. 1-25 Golušin, M., Munitlak-Ivanović, O., Andrejević, A., Vučenov, S., Survey of socio economic growth in ...
... L.A., Fuzzy Logic = Computing with words, IEEE Transactions on Fuzzy Systems, Volume 4(2), 1996, pp. 103-111. Kundu, S., The min–max composition rule and its superiority over the usual max– min composition, Fuzzy Sets & Systems, Volume 93, 2008, pp. 319–329 WEC, World Energy Resources Report, 2016 ...
... of supply, affordability, availability, natural gas Scientific field: Mining enginering Scientific subfield: Elements of mechanical and energy systems UDC: 005.3:330.34:355.02 519.245:620.9 622:662.767.2:681.3 (043.3) САДРЖАЈ 1 УВОДНА РАЗМАТРАЊА .............................. ...Александар Маџаревић. Методологија интегралне анализе сценарија енергетског развоја, Рударско-геолошки факултет, 2019
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Испитивање магнетске сусцептибилности прашине антропогеног порекла
... Petrovský E., Kapička A., et al. (2000). Low-field magnetic susceptibility: a proxy method of estimating increased pollution of different environmental systems. Environ. Geol., 39, 312-318. [5] Vallero D. A. (2008). Fundamentals of air pollution. London: Elsevier Inc., 942. [6] Pandey, J. S., Kumar, ...Дубравка Новичић, Весна Цветков, Весна Дамњановић. "Испитивање магнетске сусцептибилности прашине антропогеног порекла" in VII Меморијални научни скуп из заштите животне средине доцент др Милена Далмација Нови Сад, 01-02. април 2019, Природно-математички факултет, Департман за хемију, биохемију и заштиту животне средине (2019)
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Synergy between the mineral deposit exploration and geothermal resources assessment on the example of "Valjevo" boron and lithium deposit in Serbia
Nebojša Atanacković, Vladimir Živanović, Ana Vranješ, Sava Magazinović, Marinko Toljić, Ana Arifović, Branislav Potić (2023)Exploration of mineral deposits involves a collection of vast data sets on geological characteristics of the area. These data can largely contribute to the assessment of the geothermal potential, which can lead to an increase in the share of geothermal resources in the energy mix of the extractive industry and the local community. On the example of the "Valjevo" B-Li deposit, data on structural settings and previous hydrogeological investigations were combined with the results of resource drilling and geophysical ...... geothermal resources are co-located create opportunities for developing more sustainable exploitation scenarios by substituting the fossil fuels energy systems in the industry and the local community [2]. The "Valjevo" boron and lithium prospect is among receantly discovered deposits in Serbia, with borax ...Nebojša Atanacković, Vladimir Živanović, Ana Vranješ, Sava Magazinović, Marinko Toljić, Ana Arifović, Branislav Potić. "Synergy between the mineral deposit exploration and geothermal resources assessment on the example of "Valjevo" boron and lithium deposit in Serbia" in Proceedings 9th International Conference mining and environmental protection, MEP23, Sokobanja, 24-27th May 2023, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet (2023)
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Modeliranje sistema upravljanja zaštitom životne sredine u rudarsko-energetskim kompleksima
Jelena R. Malenović - Nikolić (2016-07-12)Efikasnost funkcionisanja sistema upravljanja zaštitom životne sredine u rudarskoenergetskimkompleksima zavisi od stepena sprovođenja usvojene politike zaštiteživotne sredine i primene preventivnih mera zaštite životne sredine. Nedostatakfinansijskih sredstava za unapređivanje tehnologije eksploatacije, transporta, pripreme iprerade energetskih mineralnih sirovina u našim rudarsko-energetskim kompleksima,negativno utiče na ostvarivanje ciljeva zaštite životne sredine, a posledice radnihaktivnosti rudarsko-energetskih kompleksa dovode do smanjenja nivoa kvalitetavazduha, vode i zemljišta...rudarsko-energetski kompleks, životna sredina, sistem upravljanja,višekriterijumsko odlučivanje, modeliranje... B., Integrated management systems: a model based on total quality approach, Managing Service Quality, Vol.11, Number 5, 2001., pp. 318-330 9. Wilkinson G., Dale B., An examination of the ISO 9001:2000 standard and its influence on the integration of management systems. Production Planning & Control ...
... J., Integration of standardized management systems: searching for a recipe and ingredients, Total Quality Management, 14(04), 2003., pp. 451-459 13. Karapetrovic, S., Casadesus, M., Implementing environmental with other standardized management systems: scope, sequence, time and integration, Journal ...
... this research is to prove the benefits of using contemporary management methods and energy indicatorsfor decision making, as opposed to management systems based on subjective opinions of individuals. The research analyses the use of the following methods: the Analytic Hierarchy Process, the Balanced ...Jelena R. Malenović - Nikolić. "Modeliranje sistema upravljanja zaštitom životne sredine u rudarsko-energetskim kompleksima" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-07-12)
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Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду
... LILIĆ N., OBRADOVIĆ I., STANKOVIĆ R., 2014: INVENTS: A Hybrid Mine Ventilation Planning and Design System, Artificial Intelligence and Hybrid Systems. iConcept Press, http://www.iconceptpress.com/books/artificial-intelligence-and-hybrid-systems/ Др МИЛОШ ТАНАСИЈЕВИЋ, ванредни професор IVEZIĆ ...
... N., Obradović I., Cvjetić A.: An intelligent hybrid system for surface coal mine safety analysis, Engineering Applications of Artificial Intelligence, 2010. 5. Janez R., Ristović I., Vulic M.: Applicability of Continuous Real-Time Monitoring Systems in Safety Assurance of Significant Structures ...
... udžbenik, Rudarsko-geološki fakultet Univerzitet u Beogradu. LILIĆ N., OBRADOVIĆ I., STANKOVIĆ R., 2013: Artificial Intelligence and hybrid system: INVENTS: A hybrid mine ventilation planning and design system. Deo monografije, izdavač iConcept. Др ДЕЈАН МИЛЕНИЋ, редовни професор ALLEN A. ...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