Претрага
2408 items
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Hydrogeochemical approach to estimate the quality of bottled waters in Serbia
Marina Ćuk, Maja Todorović, Jovana Šisović, Jana Štrbački, Jakov Andrijašević, Petar Papić. "Hydrogeochemical approach to estimate the quality of bottled waters in Serbia" in Chemical Industry, National Library of Serbia (2015). https://doi.org/10.2298/HEMIND150325042C
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Утицај похабаности резних елемената роторног багера на ниво вибрација погона за копање
Филип Милетић (2023)У докторској дисертацији је анализиран утицај похабаности резних елемената роторног багера на потрошњу електричне енергије и ниво амплитуде вибрација погона за копање. Креиран је модел који у функцији стања резних елемената дефинише зависност разматраних физичких феномена. За развој модела примењене су једначине теорије осцилација и Ватметарска метода [1] којом се одређује потрошња електричне енергије. За верификацију модела извршена су мерења на роторном багеру SRs2000.32/5+VR ангажованом на откопавању откривке на површинском копу Тамнава–Западно поље. Обављено је пет мерења. Резни елементи су ...Филип Милетић. Утицај похабаности резних елемената роторног багера на ниво вибрација погона за копање, Београд : [Ф. Милетић], 2023
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Identification and characterization of single crystal Bi2Te3-xSex alloy
Požega Emina, Ivanov Svetlana, Stević Zoran, Karanović Ljiljana, Tomanec Rudolf, Gomidželović Lidija, Kostov Ana (2015)Požega Emina, Ivanov Svetlana, Stević Zoran, Karanović Ljiljana, Tomanec Rudolf, Gomidželović Lidija, Kostov Ana. "Identification and characterization of single crystal Bi2Te3-xSex alloy" in Transactions of Nonferrous Metals Society of China 10 (25), ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS Elsevier Science BV, PO Box 211, 10:Elsevier BV (2015): 3279-3285. https://doi.org/10.1016/S1003-6326(15)63964-4
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Tehno-ekonomska analiza varijanti sistema odvodnjavanja površinskog kopa Drmno od podzemnih voda do kraja eksploatacije
Odvodnjavanje površinskog kopa Drmno od podzemnih voda je jedan od najznačajnijih podsistema u procesu eksploatacije u veoma zavodnjenoj radnoj sredini Kostolačkog basena uglja. Već od 2006. godine, Inovirani dugoročni program razvoja eksploatacije uglja predviđa izradu ekrana, pored zadržavanja postojećih standardnih metoda odvodnjavanja od podzemnih voda linijama bunara. Iako je kasnijim Glavnim rudarskim projektom, takođe, bila predviđena izrada ekrana, njegova realizacija nije započela. Na osnovu realnog sagledavanja postojeće projektne dokumentacije, početak izrade ekrana se predviđa od 2023. godine. ...Tomislav Šubaranović, Dušan Polomčić, Vladimir Pavlović. "Tehno-ekonomska analiza varijanti sistema odvodnjavanja površinskog kopa Drmno od podzemnih voda do kraja eksploatacije" in XIII Međunarodna konferencija OMC, Zlatibor, 2018, Jugoslovenski komitet za površinsku eksploataciju (2018)
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Assessment of spa mineral water quality from Vrnjačka Banja, Serbia: geochemical, bacteriological, and health risk aspects
Nebojša Đ. Pantelić, Simona Jaćimović, Jana Štrbački, Danijela B. Milovanović, Biljana P. Dojčinović, Aleksandar Ž. Kostić (2019)The goal of this study is to evaluate the quality of seven natural mineral water sources in the Vrnjačka Banja area used in the treatment of various diseases. The 24 macro- and microelements were determined by inductively coupled plasma optical emission spectrometry (ICP-OES). The results show that element content was within allowed limits of concentration, except for B, As, and Se. The evaluated content of these elements can be associated with geological and anthropogenic factors. The sample S6 contains ...Nebojša Đ. Pantelić, Simona Jaćimović, Jana Štrbački, Danijela B. Milovanović, Biljana P. Dojčinović, Aleksandar Ž. Kostić. "Assessment of spa mineral water quality from Vrnjačka Banja, Serbia: geochemical, bacteriological, and health risk aspects" in Environmental Monitoring and Assessment, Springer Science and Business Media LLC (2019). https://doi.org/10.1007/s10661-019-7848-7
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Spatial distribution of major and trace elements in artificial lakes in Serbia: health risk indices and suitability of water for drinking and irrigation purposes
Goran Marković, Aleksandar Ž. Kostić, Nebojša Đ. Pantelić, Radojka Maletić, Jana Štrbački, Jovan Cakić, Lazar Kaluđerović, Biljana P. Dojčinović, Angelo Maria Giuffrè, Jelena B. Popović-Djordjević (2023)Lakes and reservoirs are the main water resources for household, irrigation, and industrial use. Hence, it is necessary to control water pollution and have reliable information on water quality, which refers to its suitability for a particular purpose. The main objective of this study was to evaluate the suitability of water for drinking and irrigation purposes from ten artificial lakes on the territory of the Republic of Serbia. The physicochemical parameters were determined using standard analytical methods, whereas the ...Goran Marković, Aleksandar Ž. Kostić, Nebojša Đ. Pantelić, Radojka Maletić, Jana Štrbački, Jovan Cakić, Lazar Kaluđerović, Biljana P. Dojčinović, Angelo Maria Giuffrè, Jelena B. Popović-Djordjević. "Spatial distribution of major and trace elements in artificial lakes in Serbia: health risk indices and suitability of water for drinking and irrigation purposes" in Environmental Monitoring and Assessment, Springer Science and Business Media LLC (2023). https://doi.org/10.1007/s10661-023-11740-6
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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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Hidrodinamička analiza procesa starenja bunara sa horzontalnim drenovima na beogradskom izvorištu podzemnih voda
Đorđije M. Božović (2023)Predmet istraživanja doktorske disertacije su bunari sa horizontalnim drenovima beogradskog izvorišta podzemnih voda, drugog najvećeg izvorišta ovog tipa na svetu, čiji je režim rada opterećen procesima intenzivnog starenja prisutnog od samog početka formiranja izvorišta, početkom 1950‒ih godina. Istraživanja sprovedena u okviru izrade disertacije su imala za cilj definisanje nove metodologije izučavanja procesa mehaničkog i biohemijskog kolmiranja drenova izradom detaljnih 3D numeričkih hidrodinamičkih modela, upotrebom postojećih, dostupnih i široko rasprostranjenih računarskih programa. Istraživanja su realizovana simulacijom ostvarenog režima podzemnih voda ...modeliranje podzemnih voda, hidrauličke karakteristike drenova, koeficijent propusnosti drenova, prifilterska zona drena, hidraulički otpori na drenovima, kolmiranje drenova, ulazne brzine podzemnih voda, MODFLOW, CLN Package... flow model for Pali Area, India. African Journal of Environmental Science and Technology, 5 (12), 1085‒1092 DOI: 10.5897/AJEST11.220 195 Sophocleous, M., 2002. Interactions between groundwater and surface water: the state of the science. Hydrogeology Journal, 10, 52–67. DOI: 10.1007/s10040-001-0170-8 ...
... Source–Water Quality, Water Science and Technology Library, Volume 43. Springer, Dordrecht, 29‒34. DOI: 10.1007/0-306-48154-5_3 95 Jaroslav Černi Institute for the Development of Water Resources, R&D Center for Bioengineering, Kragujevac, 2004. Program for pre- and postprocessing of models for ...
... alluvial groundwater. Water Resources and Manage., 1 (2), 27–43. 47 Dimkić, M., Pušić, M., Vidović, D., Petković, A., Boreli–Zdravković, Dj., 2011c. Several natural indicators of radial well ageing at the Belgrade Groundwater Source, part 1. Water Science & Technology. 63 (11), 2560-2566. DOI: 10.2166/wst ...Đorđije M. Božović. Hidrodinamička analiza procesa starenja bunara sa horzontalnim drenovima na beogradskom izvorištu podzemnih voda, Beograd : [Đ. Božović], 2023
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Design of a sucker rod pumping system
Ana Ponoćko (2024)For a long time in the history of oil production, sucker rod pumps have been the first and in many cases the only choice when it comes to mechanical extraction methods. Proper selection of each individual element of the system enables optimization, which entails benefits in the form of increased efficiency and reduced costs. The first part of the paper presents the underground and surface equipment of the rod pump and describes the operation of the entire system. The ...... amount of data and, based on potential issues, offers recommendations for system protection. 47 • CONCLUSION Designing a sucker rod pump system is a complex process that requires careful consideration of various technical and economic factors. Key aspects of this process include selecting ...
... fluids, excessive sand production, and excessive gas production through the pump, the API method does not provide accurate results. API is the result of electrical analog computer studies of sucker rod motion. This predated the numerical solution of the wave equation and was not as general. However ...
... Polished Rod Figure 4.2. Seal Head /9/ 4.6 Short connection between casing and tubing The short connection between casing and tubing is used to release gas from the annulus into the oil pipeline. This process is conducted under a specific minimal pressure regulated by a choke valve, which ...Ana Ponoćko. Design of a sucker rod pumping system, 2024
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Tectonic development of the Vardar ocean and its margins: evidence from the Republic of Macedonia and Greek Macedonia
Robertson H.F. Alastair, Trivić Branislav, Đerić Nevenka, Bucur I. Ioan. "Tectonic development of the Vardar ocean and its margins: evidence from the Republic of Macedonia and Greek Macedonia" in Tectonophysics 595-596, Amsterdam, Netherlands:Elsevier Science BV, PO Box 211, 1000 AE (2013): 25-54. https://doi.org/10.1016/j.tecto.2012.07.022
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Back-arc underplating provided crustal accretion affecting topography and sedimentation in the Adria microplate
Paolo Mancinelli, Vittorio Scisciani, Cristina Pauselli, Gérard M. Stampfli, Fabio Speranza, Ivana Vasiljević (2021)Supported by evidence of deep crustal sources for the observed magnetic anomalies in Central Italy and by outcropping gabbros in the Croatian archipelago, we model the observed gravity and magnetic anomalies in the Central Adriatic Sea and surroundings. We suggest that the major magnetic anomalies in the area are related to a wide underplating and propose that this volume represents the first stage of the back-arc Adria continental breakup in Early Permian times. During the Palaeotethys-Adria collision, underplating has ...Paolo Mancinelli, Vittorio Scisciani, Cristina Pauselli, Gérard M. Stampfli, Fabio Speranza, Ivana Vasiljević. "Back-arc underplating provided crustal accretion affecting topography and sedimentation in the Adria microplate" in Marine and Petroleum Geology, Elsevier Ltd. (2021). https://doi.org/10.1016/j.marpetgeo.2021.105470
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Reclamation methods and their outcomes in Serbian mining basins
Ranđelović Dragana (2017)Ranđelović Dragana. "Reclamation methods and their outcomes in Serbian mining basins" in Book of Abstracts of 2nd International and 14th National Congress of Soil Science Society of Serbia Solutions and Projections for Sustainable Soil Management, :Soil Science Society of Serbia (2017): 56-57
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Analysis of Blasting Impacts at the Open Pit Manastiriste near Topola on the Monastery Complex
Lutovac Suzana, Bajić Sanja, Gaćina Radmila, Urošević Katarina. "Analysis of Blasting Impacts at the Open Pit Manastiriste near Topola on the Monastery Complex" in Mining and Metallurgy Engineering Bor no. 2, Bor:Mining and Metallurgy Institute Bor (2016): 9-19. https://doi.org/10.5937/MMEB1602009B
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Effect of blasting on the adjacent building and mining structures at the open pit Kijevo
Lutovac Suzana, Tokalić Rade, Gluščević Branko, Vidanović Nebojša, Beljić Čedomir,. "Effect of blasting on the adjacent building and mining structures at the open pit Kijevo" in XXIV International Conference „ECOLOGICAL TRUTH“ ECO-IST16, Vrnjačka Banja, Serbia, :University of Belgrade – Technical Faculty in Bor (2016): 148-156
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New approach to correlation of hydrocarbon reservoirs in sandstone layers of the "Mokrin" field"
Saša Ivanišević, Dejan Radivojević (2018)геофизички каротаж, депозиционе средине, лежишта угљоводоника, миоцен, пост‐ рифтнo, секвенциона стратиграфија... de‐ pression, west of the Szeged fault (KM‐117, 17, 1 and 2), while east of the Szeged fault, there are non‐ commercial quantities of gas in the wells KM‐3, 4 and 5 (Figure 1a and 1b). The data obtained in the process of well testing and during reservoir engineering indicate that the ...
... in the selection of markers in designation and correla‐ tion of hydrocarbon reservoirs, this approach has led to incorrect assessments of oil and gas reserves, confusion in the interpretation of hydrodynamic measurements and reduced efficiency in the process of reservoir management. As opposed to ...
... selection of markers, designation and correlation of hydrocarbon reservoirs have led to incorrect assessments of oil and gas reserves and confusion in the interpretation of hydrodynamic measurements, which resulted in lower efficiency in the process of reservoir management. The new ...Saša Ivanišević, Dejan Radivojević. "New approach to correlation of hydrocarbon reservoirs in sandstone layers of the "Mokrin" field"" in 17th Serbian Geological Congress, Vrnjačka Banja, 17-20 maj 2018, Srpsko geološko društvo (2018)
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Interaction of sodium dodecylsulfate (SDS) with homoionic montmorillonites: adsorption isotherms and metal-ion release
The interaction of dodecylsulfate anions (DS−) with homoionic Ca-, Mg-, Ni-, Cu-, Cd-, Pb- and Fe-montmorillonites were investigated. Mg- and Cd-montmorillonite do not adsorb DS−, and an anion exchange at the edges of the clay mineral does not take place. Three different adsorption processes are identified on the other montmorillonites: i) Fe-montmorillonite is covered with amorphous iron hydroxide, and DS−-anions are bound at positively charged sites. ii) On Ca- and Pb-montmorillonite DS− is precipitated as Me(DS)2. iii) On Ni- ...M. Ilic, J. Gonzalez, A. Pohlmeier, H. D. Narres, M. J. Schwuger. "Interaction of sodium dodecylsulfate (SDS) with homoionic montmorillonites: adsorption isotherms and metal-ion release" in Colloid Polymer Science, Springer Science and Business Media LLC (1996). https://doi.org/10.1007/BF00656626
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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... električnih centrifugalnih pumpi“; Michael Golan, Curtis H. Whitson, (1991). „Well Performance Second Edition“, Norwegian University of science and Technology (NTNU); 76 Novičić Slobodan, (2010). „Efikasnost primene sistema potopljenih centrifugalnih pumpi na poljima NIS Naftagas-a“; Novomet ...
... , (2018). Oil and Gas Production Principls: 9th Lecture: Vertical Lift Performancee (VLP); L, Fetoui, „Productio Technology, ESP design — Step 6: Optimum Size of Compounds“, URL: Productio Technology, ESP design (30.08.2024.); Jan Dirk Jansen, (2017). „Nodal Analysis of Oil and Gas Production ...
... Gabor Takacs, (2018). „Electrical Submersible Pumps Manual Design, Operations, and Maintenance Second edition“; H. Stel, T. Sirino, F.J. Ponce, S. Chiva, R.E.M. Morales, (2015). „Journal of Petroleum Science and Engineering“ 136 (2015) 41—54; Hisham, B., M., Aman, A., (2017). „Investigate a ...Aleksandar Sredojević. Analiza softvera za projektovanje ESP sistema, 2024
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Bukovo delta sediments as witness of climate and tectonic changes (SE Serbia, Dacian Basin)
Dejan Radivojević, Meri Ganić, Miloš Radonjić. "Bukovo delta sediments as witness of climate and tectonic changes (SE Serbia, Dacian Basin)" in Geologica Balcanica, XXII International Congress of the CBGA, Plovdiv, Bulgaria, 7–11 September 2022, Bulgarian Academy of Science (2022)
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Early–Middle Jurassic brachiopods from Ponor Mountain, Western Balkan Mountains, Bulgaria; taxonomy, biostratigraphy and occurrence in the context of the early Toarcian Oceanic Anoxic Event
Barbara V. Radulović, Lubomir S. Metodiev, Neda Motchurova-Dekova, Platon Tchoumatchenco. "Early–Middle Jurassic brachiopods from Ponor Mountain, Western Balkan Mountains, Bulgaria; taxonomy, biostratigraphy and occurrence in the context of the early Toarcian Oceanic Anoxic Event" in Historical Biology (2023). https://doi.org/10.1080/08912963.2023.2190757
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A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)
... Education, Science and Technological Development of the Republic of Serbia for funding projects OI176022, TR33039, TR37005 and III43004. REFERENCES BAJIĆ, D. and POLOMČIĆ, D. (2012) A conceptual hydrogeological model for open pit mine „Polje E“ (Kolubara coal basin, Serbia). In: RŮŽIČKA, J. and RŮŽIČKOVÁ ...
... 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 the International ...
... Belgrade (Fig. 1) and encompasses the area around the middle and lower courses of the Kolubara River and its tributaries: the Tamnava (left) and the Peštan (right). Tamnava – West Field falls within the municipalities of Lajkovac and Ub, near the villages of Kalenić, Mali Borak, Radljevo and Skobalj. To ...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