Претрага
251 items
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Volume flow measurement of bulk solids on conveyor belts
Aleksandrović Snežana, Damnjanović Vesna. "Volume flow measurement of bulk solids on conveyor belts" in Transport & Logistics - International Journal 13 no. 27, Košice, Slovakia:Faculty of Mining and Geology, Belgrade, BERG Faculty, Košice (2013)
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Preliminary results of Selanac debris flow modelling in RAMMS
Krušić Jelka, Abolmasov Biljana, Marjanović Miloš, Đurić Dragana. "Preliminary results of Selanac debris flow modelling in RAMMS" in Abstract Book 17th Serbian Geological Congress, May 17‐20, Vrnjačka Banja 2, Beograd:Srpsko geološko društvo (2018): 619-624
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Long-lived Radioactive Elements and REE as Fingerprints of Deep Groundwater Flow
Marina Ćuk Đurović, Maja Todorović, Igor Jemcov, Petar Papić. "Long-lived Radioactive Elements and REE as Fingerprints of Deep Groundwater Flow" in EGU General Assembly 2021, EGU (2021)
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Model of oil and gas pipeline rinsing using the fluid flow
Batalović Veselin, Danilović Dušan, Živković Marija. "Model of oil and gas pipeline rinsing using the fluid flow" in Journal of Applied Engineering Science 9 no. 1, Beograd:Institute for Research and Design in Commerce and Industry (2011): 237-242
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Groundwater gravitational circulation of Karst Veliko Vrelo and Malo Vrelo springs by isotope and the noble gas method: case study of the Beljanica Massif
Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental ChemistryLjiljana Vasić, Laszlo Palcsu, Huang Fen. "Groundwater gravitational circulation of Karst Veliko Vrelo and Malo Vrelo springs by isotope and the noble gas method: case study of the Beljanica Massif" in Environmental Earth Sciences, Springer Science and Business Media LLC (2019). https://doi.org/10.1007/s12665-019-8294-0
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Preliminary results of the Selanac debris flow modelling in RAMS - a case study
Krušić Jelka, Andrejev Katarina, Abolmasov Biljana, Marjanović Miloš. "Preliminary results of the Selanac debris flow modelling in RAMS - a case study" in Proceeding of the 3rd Regional Symposium on Landslides in the Adriatic-Balkan Region, Ljubljana 2017, 11 - 13 October 2017 Ljubljana, Slovenia, Book of Abstracts 1, Ljubljana:Geological Survey of Slovenia (2017): 38
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Preliminary results of the Selanac debris flow modelling in RAMS - a case study
Krušić Jelka, Andrejev Katarina, Abolmasov Biljana, Marjanović Miloš. "Preliminary results of the Selanac debris flow modelling in RAMS - a case study" in Proceeding of the 3rd Regional Symposium on Landslides in the Adriatic-Balkan Region 1, Ljubljana, Slovenia:Geological Survey of Slovenia (2018): 95-100
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Preliminary results of numerical modelling of debris flow - case study Leva reka, Serbia
Krušić Jelka, Samardžić Petrović Mileva, Marjanović Miloš, Abolmasov Biljana, Miljković Stevan (2018)Krušić Jelka, Samardžić Petrović Mileva, Marjanović Miloš, Abolmasov Biljana, Miljković Stevan. "Preliminary results of numerical modelling of debris flow - case study Leva reka, Serbia" in Proceedings of the 16th Danube-European Conference on Geotechnical Engineering-Geotechnical hazards and risks: Experiences and practices, Skopje, Republic of Macedonia 2, :Willey Ernst and Sons (2018): 707-712
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Lowest possible flow temp. offers savings vs. pour point
Danilović Dušan, Karović-Maričić Vesna, Ivezić Dejan, Batalović Veselin, Živković Marija, Crnogorac Miroslav (2013)Danilović Dušan, Karović-Maričić Vesna, Ivezić Dejan, Batalović Veselin, Živković Marija, Crnogorac Miroslav. "Lowest possible flow temp. offers savings vs. pour point" in Oil & Gas Journal 111 no. 8, Houston:PennWell Corp (2013): 86-90. https://doi.org/10.1016/j.energy.2014.02.017
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Hydrogeochemical characterization of the regional groundwater flow systems in Southern part of Pannonian Basin (Serbia)
Maja Todorović, Marina Ćuk Đurović, Igor Jemcov, Petar Papić. "Hydrogeochemical characterization of the regional groundwater flow systems in Southern part of Pannonian Basin (Serbia)" in International Symposium on Geofluids. 7-9 July 2021 – virtual event, Joseph and Elizabeth Toth Hydrogeology Chair Foundation (2021)
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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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A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)
... hydrodynamic complexity of the conditions, and includes modeling of the (Polomčić, 2002): - flow field (aquifer geometry), - filtration characteristics of the porous medium and hydrodynamic state of aquifer flow, - aquifer regime, which is determined by certain laws, phenomena and distribution of ...
... infiltration and boundary conditions: river, general head boundary, drainage, specified discharge - drainage wells, specified discharge - “no flow” cells, and flow barrier. Among the so-called initial conditions, which characterize the piezometric head at a certain initial time, groundwater levels of ...
... geology, pp. 483-487. RAPANTOVA, N. et al. (2007) Ground Water Flow Modelling Applications in Mining Hydrogeology. Mine Water and the Environment, 26 (4), pp. 264-270. RÜHAAK, W., LUO, J. and DIERSCH, H.-J.G. (2009) 3D Modelling of Brine Flow - A Case Study for a Flooded Salt Mine. In: Proceedings of ...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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Pregled hidrodinamičkih istraživanja bunara sa horizontalnim drenovima numeričkim metodama
U radu je predstavljen pregled odabranih hidrodinamičkih istraživanja realizovanih primenom numeričkih metoda simulacije kretanja podzemnih voda pod uticajem rada bunara sa horizontalnim drenovima. Na osnovu pristupa u matematičkom i hidrauličkom tretiranju, kao i numeričkoj simulaciji bunara sa horizontalnim drenovima na modelima, predstavljeni su najznačajniji aspekti izrade hidrodinamičkih modela ovog kompleksnog tipa vodozahvatnog objekta. Metodologija obuhvata izbor: a) graničnih uslova za simulaciju prirodnih granica, izvora prihranjivanja i dreniranja izdani; b) primenjivanog stepena diskretizacije prostora obuhvaćenog modelom u planu i profilu; ...horizontalni bunari, hidraulika bunara, analitički modeli, numerički modeli, hidrodinamičko modeliranje podzemnih vodaĐorđije Božović, Dušan Polomčić, Dragoljub Bajić. "Pregled hidrodinamičkih istraživanja bunara sa horizontalnim drenovima numeričkim metodama" in Vodoprivreda, Srpsko društvo za odvodnjavanje i navodnjavanje (2020)
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Karst aquifer impact on the formation of surface runoff: case study of the Resava River catchment, Serbia
Marina Mitrašinović, Vesna Ristić Vakanjac, Veljko Marinović, Saša Milanović, Ljiljana Vasić, Dušan Polomčić (2022)The paper compares the flow regimes of the Resava River at the gauging stations of the Manasija Monastery (upper course) and the town of Svilajnac (lower course). The hydrological analysis encompasses a multiyear period of monitoring (1982–2020). The water budget and baseflow index are assessed for the catchment areas monitored by the Svilajnac station (683 km2) and the Manasija Monastery station (358k m2), considering the overall monitoring period and characteristic years. The results indicate that the specific runoff in ...... 1999. The baseflow and direct flow in the selected years, observed at the two gauging stations, were separated to analyze the flow regime. Table 1 shows discharge Table 1. Baseflow and direct flow volumes and baseflow index volumes for baseflow and direct flow (10% m*), as well as the baseflow ...
... terrain, with rocks, which hydrogeological properties arc not conducive to the formation of aquifers. Flow regime of the Resava River The following characteristic years were selected to show the flow regime of the Resava River: • Years in which the mean annual discharge was equal to the multiyear ...
... marinovic(argf.bg.ac.rs; sasa.milanovic(qrgf.bg.ac.rs; ljiljana.vasic(orgf.bg.ac.rs; dusan polomcic(aq;rgf.bg.ac.rs Abstract. The paper compares the flow regimes ofthe Resava River at the gauging stations ofthe Manasija Monastery (upper course) and the town of Svilajnac (lower course). The ydrological ...Marina Mitrašinović, Vesna Ristić Vakanjac, Veljko Marinović, Saša Milanović, Ljiljana Vasić, Dušan Polomčić. "Karst aquifer impact on the formation of surface runoff: case study of the Resava River catchment, Serbia" in National Conference with International Participation “GEOSCIENCES 2022”, Sofia : Bulgarian geological society (2022)
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Regional Slope Stability Analysis in Landslide Hazard Assessment Context, North Macedonia Example
Miloš Marjanović, Biljana Abolmasov, Igor Peshevski, James Reeves, Irena Georgievska. "Regional Slope Stability Analysis in Landslide Hazard Assessment Context, North Macedonia Example" in Understanding and Reducing Landslide Disaster Risk, Springer International Publishing (2020). https://doi.org/10.1007/978-3-030-60227-7_29
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Mitigating hydrate formation in onshore gas wells: A case study on optimization techniques and prevention
Gas wells, particularly those situated onshore, play a vital role in the global energy sector by supplying a significant portion of natural gas. However, operational challenges, notably gas hydrate formation, pose substantial issues, leading to complications such as flowline blockages and unexpected well shutdowns. Gas hydrates, crystalline structures resembling ice, ...Gas Well, Gas Hydrate Formation, Well Modeling, Well Performance Optimization, Choke Position Adjustments, Methanol InjectionMilica Ješić, Bojan Martinović, Stefan Stančić, Miroslav Crnogorac, Dušan Danilović. "Mitigating hydrate formation in onshore gas wells: A case study on optimization techniques and prevention" in Underground Mining Engineering, Beograd : Rudarsko-geološki fakultet (2023)
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Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling
Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeBranislav Petrović, Veljko Marinović, Zoran Stevanović. "Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling" in Environmental Earth Sciences, Springer Science and Business Media LLC (2023). https://doi.org/10.1007/s12665-023-10911-5
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Hydraulic impact of pressure transients from water conveyance tunnel on the complex hydrogeological system: A case study HPP
Tunel pod pritiskom, Unutrašnji pijezometri, Tranzijenti pritiska, Karstna izdan, Pukotinska izdan, Hidraulički odziv... operation involves frequent load changes and generates significant hydraulic transients in the pressure tunnel, creating two characteristic unsteady flow phenomena: water hammer – WH and water mass oscillation – WMO (Fig. 3). The elastic properties of Water lead to the appearance of a hydraulic transient ...
... tunnel-Part 1: Guideline for an estimate of groundwater inflow rate Tunn. Undergr. Space Technol. (2010) D.Li et al. Case studies of groundwater flow into tunnels and an innovative Water- gathering system for water drainage Tunn. Undergr. SpL. Tech. (2009) A. Mangin Pour une meilleure connaissance ...
... partir des analyses corrćlatoire et spectrale J. Hydrol. (1984) J.Moon et ol. Effect of highly pervious geological features on ground-Water flow into a tunnel Eng. Geol. (2011) F. Mossmark et aL Hydrochemical changes caused by underground constructions—4 case study of the Kattleberg rail ...Igor Jemcov, Maja Todorović, Aleksandar Jemcov, Marina Ćuk Đurović. "Hydraulic impact of pressure transients from water conveyance tunnel on the complex hydrogeological system: A case study HPP" in Journal of Hydrology, Pirot, 2024, Elsevier BV (2024). https://doi.org/10.1016/j.jhydrol.2024.132068
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Development and Validation of Universal 3D Blast Fragmentation Model
Fluid Flow and Transfer Processes, Computer Science Applications,Process Chemistry and Technology, General Engineering, Instrumentation, General Materials ScienceVeljko Lapčević, Slavko Torbica, Miloš Stojanović, Ivica Vojinović. "Development and Validation of Universal 3D Blast Fragmentation Model" in Applied Sciences, MDPI AG (2023). https://doi.org/10.3390/app13148316
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Application of machine learning for diagnosing the operation of a deep well pump in oil production
Maja Trikić (2024)This paper will thoroughly examine how machine learning can improve the diagnosis of deep well pumps by analyzing the role and function of the pumps, dynamograms, sensor technologies, and diagnostic methods.Our analysis will provide insights into modern techniques and approaches for enhancing the performance and reliability of oil production systems, targeting cost reduction and increased operational efficiency.deep well pump, dynamograms, machine learning, diagnostics of operating coditions,Random Forest, XGBoost... to convert the mechanical flow of a fluid into an electrical signal that can be analyzed and interpreted. Based on the flow measurement method, sensors can be classified into several main types: 1.Turbine sensors - These use rotating turbines driven by the fluid flow. The rotation speed of the ...
... the turbine is proportional to the flow rate of the liquid or gas. Turbine sensors are often used in applications where precise measurement of flow rate is required. 2.Ultrasonic sensors – These use sound waves to measure flow. There are two main methods: a.Doppler method - Measures changes in ...
... These measure changes in capacitance between two electrodes that move in response to the flow of a fluid. Changes in capacitance are proportional to the flow rate. Capacitive sensors are suitable for measuring flow in low-viscosity liquids and are often used in applications such as laboratory testing ...Maja Trikić. Application of machine learning for diagnosing the operation of a deep well pump in oil production, 2024