Претрага
348 items
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Double traveling valve increases rod-pump efficiency
Traditional sucker rod pumps (SRP) use a single traveling valve, but recent double traveling valve innovations have improved SRP performance and efficiency in field applications with double traveling valves installed in pumps with top mechanical seating. The valves sealed better and produced similar fluid volumes compared with the previous single-valve pumps. They also enabled a reduction in pump diameter and optimized usage of surface equipment. Overall, the double travel valve SRPs produced stable production rates and annual production targets.Miloš Petrović, Bojan Martinović, Milica Ješić, Miroslav Crnogorac. "Double traveling valve increases rod-pump efficiency" in Oil & Gas Journal (2023)
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Creation of hydrodynamic model of the deposit Radljevo-North
Polomčić Dušan, Jeremić Miloš, Stevanović Petrović Nadežda, Dimitrijević Bojan. "Creation of hydrodynamic model of the deposit Radljevo-North" in Proceedings of the 13th International Symposium Continuous Surface Mining ISCSM 2016, Beograd: (2016): 437-446
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Substitution reactions of some novel sterically hindered monofunctional Pd(II) complexes
Reakcije supstitucije monofunkcionalnih kompleksa [(TLtBu)PdCl]+ i [Pd(tpdm)Cl]+, gde je TLtBu = 2,6-bis[(1,3-di-terc-butilimidazolin-2-imino)metil]piridin i tpdm = terpiridindimetan, sa nukleofilima kao što su: tiourea, I−, Br−, NO2−, piridin i dimetil-sulfoksid (DMSO) proučavani su u 0,1 M vodenom rastvoru NaClO4 u prisustvu 10 mM NaCl. Reakcije su sprovedene na tri različite temperature (288, 298 i 308 K) korišćenjem tehnike zaustavljenog protoka na različitim temperaturama. Reakcije supstitucije su praćene pod uslovima pseudo prvog reda sa velikim viškom nukleofila. Dobijeni rezultati pokazuju da kompleks ...... Bogojeski, Biljana Petrović, Živadin D. Bugarčić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Substitution reactions of some novel sterically hindered monofunctional Pd(II) complexes | Aleksandar Mijatović, Jovana Bogojeski, Biljana Petrović, Živadin D. Bugarčić ...Aleksandar Mijatović, Jovana Bogojeski, Biljana Petrović, Živadin D. Bugarčić. "Substitution reactions of some novel sterically hindered monofunctional Pd(II) complexes" in Inorganica Chimica Acta, Elsevier BV (2011). https://doi.org/10.1016/j.ica.2011.11.031
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Concepts for Improving Machine Learning Based Landslide Assessment
Miloš Marjanović, Mileva Samardžić Petrović, Biljana Abolmasov, Uroš Đurić. "Concepts for Improving Machine Learning Based Landslide Assessment" in Natural Hazards GIS-based Spatial Modeling Using Data Mining Techniques, Advances in Natural and Technological Hazards Research, volume 48, Springer Nature Switzerland AG 2019 (2019). https://doi.org/10.1007/978-3-319-73383-8_2
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Poreklo asocijacije Ni, Ag i Sn minerala u polimetaličnom ležištu Rudnik
Rudnomikroskopska, SEM-EDS i LA-ICP-MS ispitivanja rudne mineralizacije iz Pb-Zn-Cu-(Ag) ležišta Rudnik, ukazala su na lokalno prisustvo specifične asocijacije minerala nikla, srebra i kalaja, deponovane u tektonskoj breči, arsenopiritsko-pirotinskim, piritsko-pirotinsko-arsenopiritskim i kvarcno-sulfidnim žicama u harcburgitima. U tektonskoj breči deponovan je polimineralni sulfidni agregat kojeg čine pirotin (50), galenit, sfalerit i halkopirit. Arsenopiritsko-pirotinske žice odlikuje dezintegrisani agregat arsenopirita cementovan sa pirotinom. U piritsko-pirotinsko-arsenopiritskim žicama masivni pirit (50%) prorasta sa arsenopiritom i cementovan je polimineralnim agregatom pirotina, galenita i sfalerita. Minerali nikla, srebra ...Stefan Petrović, Aleksandar Pačevski, Viktor Bertrandson Erlandson, Rade Jelenković. "Poreklo asocijacije Ni, Ag i Sn minerala u polimetaličnom ležištu Rudnik" in 18. Kongres geologa Srbije "Geologija rešava probleme", Divčibare, 01-04 jun 2022., Srpsko geološko društvo (2022)
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Centar za hidrogeologiju karsta - 15 godina nauke i struke
... Vasić, Zoran Stevanović, Branislav Petrović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Centar za hidrogeologiju karsta - 15 godina nauke i struke | urednici Saša Milanović, Ljiljana Vasić, Zoran Stevanović, Branislav Petrović | | 2023 | | http://dr.rgf.bg ...
... kao član tima i tehnički sekretar. Branislav Z. PETROVIĆ, PhD, Research Associate Researcher at the Centre for Karst Hydrogeology Department of Hydrogeology, Faculty of Mining and Geology, branislav.petrovicOyrgf.bg.ac.rs Dr. Branislav Petrović was born on March 27, 1981 in Kragujevac. He completed ...
... CENTRE FOR KARST HYDROGEOLOGY 15 YEARS OF SCIENCE AND PRACTICE Urednici / Editors: Saša Milanović Ljiljana Vasić Zoran Stevanović Branislav Petrović Centar za hidrogeologiju karsta / Centre for Karst Hydrogeology Beograd / Belgrade 2023 Izdavač / Publisher. Univerzitet u Beogradu R ...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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Short-term forecasting of PM10 and PM2.5 concentrations with Facebook's Prophet Model at the Belgrade-Zeleno brdo
Filip Arnaut, Vesna Cvetkov, Dragana Đurić, Mileva Samardžić-Petrović. "Short-term forecasting of PM10 and PM2.5 concentrations with Facebook's Prophet Model at the Belgrade-Zeleno brdo" in Geofizika (2023). https://doi.org/10.15233/gfz.2023.40.7
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Fluid inclusion study in quartz of the Rudnik Pb-Zn-Cu-Ag skarn deposit, Serbia
Six types of fluid inclusions were identified in three growth zones of hydrothermal quartz from the Rudnik skarn deposit. In the core zone, primary two-phase fluid inclusions of high (type 1) and moderate salinity (type 2) homogenized to liquid between 350-430 °C and 340-420 °C, respectively. Raman analysis revealed that the vapour phases are a CO2-CH4 gas mixture, with a predominance of CO2. The core contains and dispersed vapour-rich fluid inclusions of low salinity (type 3) composed of CO2-CH4-H2S ...Stefan Petrović, Ronald J. Bakker, Vladica Cvetković, Rade Jelenković. "Fluid inclusion study in quartz of the Rudnik Pb-Zn-Cu-Ag skarn deposit, Serbia" in Mineral Resources in a Changing World-17th SGA Biennial Meeting, Zurich, between 28th August and 1st September 2023, Genéve : Society for Geology Applied to Mineral Deposits (2023)
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Upotreba lidar tehnologije i digitalne fotogrametrije primenom iPhone pametnih telefona na primeru rudnika "Rudnik"
Nikola Mirković, Luka Crnogorac, Aleksa Paunović. "Upotreba lidar tehnologije i digitalne fotogrametrije primenom iPhone pametnih telefona na primeru rudnika "Rudnik"" in 15. Simpozijum „Rudarstvo 2024“ Održivi razvoj u rudarstvu i energetici, Vrnjačka banja, 21-24. maj 2024., Beograd : Institut za tehnologiju nuklearnih i drugih mineralnih sirovina (2024)
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Analysis and visualization of geophysical well-logging data from closely spaced boreholes
Geophysical logging measurements for determining the condition of the rock mass on the dam profile and locating the predisposed directions of water circulation and loss from the reservoir were conducted in four boreholes distributed at a close distance. The survey was carried out in a typical karst terrain, which is an additional challenge for defining the geological model, especially in terms of water retention. That kind of data set provides an excellent opportunity for a new approach to analysis ...... Hosuua Cmoanuk, Heuua 4n0o6 FAULT TYPE ASSESSMENT BASED ON VERTICAL GRAVITY GRADIENT ANOMALIES – ADVANTAGES AND LIMITATIONS Jvana Pasiljević, Snežana Ignjatović, Branislav Sretković TFEOTEPMAJIEH IIOTEHIIMJAJI BO PEIIVBJIMKA CEBEPHA MAKEJIOHMHJA Hayaq baapa, Catba Iocmonosa Jakuvo8cka, Jluouja ...Branislav Sretković, Ivana Vasiljević, Dimitry Sidorov - Biryukov. "Analysis and visualization of geophysical well-logging data from closely spaced boreholes" in Vth Congress of the Geologists of the Republic of North Macedonia, Ohrid, Republic of North Macedonia, September 27-28, 2024, Macedonian Geological Society (2024)
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Geološko-geofizički model dela Timočkog magmatskog kompleksa
Snežana M. Ignjatović (2014-06-30)Timočki magmatski kompleks (TMK) u geotektonskom smislu pripada KarpatoBalkanidimaistočne Srbije, koji su deo Tekijsko-Dakijske jedinice. TMK je nastaotokom kontinuirane vulkanske aktivnosti, koja je trajala oko deset miliona godina iodvijala se generalno u tri faze (Zimmerman et al., 2008, Kolb et al., 2013, Banješević,2006). Pomeranje vulkanskog fronta je išlo od istoka ka zapadu (von Quadt et al., 2002,2003, 2007). Ovaj kompleks pripada tetijskom evroazijskom metalogenetskom pojasu usvetu poznat po ležištima bakra i zlata (Janković, 1990).U doktorskoj disertaciji su prikazani rezultati ...Timočki magmatski kompleks, aeromagnetska istraživanja, gravimetrijskaistraživanja, 2D geološko-geofizički model, Valja Strž, magmatsko telo... Timok Magmatic Complex Snežana M. Ignjatović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Geološko-geofizički model dela Timočkog magmatskog kompleksa;Geological-geophysical model of the part of the Timok Magmatic Complex | Snežana M. Ignjatović | Универзитет ...
... Snežana M. Ignjatović Geološko-geofizički model dela Timočkog magmatskog kompleksa Doktorska disertacija Beograd, 2014 University of Belgrade Faculty of Mining and Geology Snežana M. Ignjatović Geo ...
... de-copper-at%20timok/1001679498/ http://www.northernminer.com/news/reservoir-freeport-hit-high-grade-copper-at%20timok/1001679498/ Biografija Snežana Ignjatović je rođena 12. 09. 1979. godine u Raški. Osnovnu školu je završila u Baljevcu na Ibru i Boru. Završila je osnovnu muzičku školu „Miodrag ...Snežana M. Ignjatović. "Geološko-geofizički model dela Timočkog magmatskog kompleksa" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-06-30)
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Mineral Resources of Serbia: Environmental, Societal and Economic Challenges
... g and Phytoremediation as Two Prospective Environmentally-Friendly Methods of Pollution Control Slađana Č. A4lagić, Maja M. Nujkić, Snežana B. Tošić, Snežana M. Milić and Mile D. Dimitrijević Determination of *Ra, ?Th, “'K, ?%U, *%U and !Cs in Agricultural Land in the Villages in the Surroundings ...
... AND PHYTOREMEDIATION AS TWO PROSPECTIVE ENVIRONMENTALLY-FRIENDLY METHODS OF POLLUTION CONTROL Slađana Č. A4lagić”*, Maja M. Nujkić!, Snežana B. Tošić”, Snežana M. Milić! and Mile D. Dimitrijević! !Technical Faculty in Bor, University of Belgrade, Bor, Serbia ? Faculty of Sciences and Mathematics ...
... science, soil science, materials science, and chemistry. Snežana B. Tošić, PhD Full professor Affiliation: University of Niš, Faculty of Sciences and Mathematics, Department of Chemistry Contact: sneskate yahoo.com Education: Snežana Tošić holds a PhD from the Faculty of Sciences and Mathematics ...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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Регионални приступ изради карте угрожености подземних вода Србије - нова метода Издан
Милановић Саша, Стевановић Зоран, Ђурић Душан, Петровић Тања, Миловановић Милица. "Регионални приступ изради карте угрожености подземних вода Србије - нова метода Издан" in Зборник радова 15. конгреса геолога Србије са међународним учешћем, Београд, [26-29 мај] 2010. , Београд:Српско геолошко друштво (2010): 585-590
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Portable geotechnics-using android smart phones and tablets for geotechnical filed investigations
Đurić Uroš, Abolmasov Biljana, Petrović Dragana, Marjanović Miloš, Kuzmić Petar. "Portable geotechnics-using android smart phones and tablets for geotechnical filed investigations" in Proceeding of 13th International Multidisciplinary Scientific Conference SGEM 2013, Section-Informatics, Geoinformatics, Cartography and GIS 8 no. 1, Albena, Bulgaria :BASCI (2013): 513-520. https://doi.org/10.5593/sgem2013
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Osnovni principi rukovanja amonijum nitratom
Kričak Lazar, Petrović D., Negovanović Milanka, Janković Ivan, Zeković Dario. "Osnovni principi rukovanja amonijum nitratom" in Zbornik radova IX Međunarodne naučne konferencije o površinskoj eksploataciji OMC 2010, Vrnjačka Banja:Jugoslovenski komitet za površinsku eksploataciju (2010): 100-109
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Development of non explosive fuel mixture for non-invasive procedures of obtaining the blocks of decorative stones
Kričak Lazar, Petrović D., Negovanović Milanka, Janković Ivan, Zeković Dario. "Development of non explosive fuel mixture for non-invasive procedures of obtaining the blocks of decorative stones" in Proceedings of the 1st International Conference „ Harmony of nature and spirituality in stone“, Kragujevac, Serbia:Stone Studio Association (2011): 85-89
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Geothermal potential, chemical characteristic and utilization of groundwater in Serbia
To collect and unify data about all geothermal resources in Serbia, a database was formed. The database allows us to perceive the geothermal resources of Serbia and their potential for utilization. Based on the data available in the geothermal database, the estimated temperatures of reservoirs, heat power, and geothermal energy utilization were calculated. The database contains 293 geothermal records (springs, boreholes) registered at 160 locations, with groundwater temperatures in the range between 20 and 111 °C. The maximum expected ...Geothermal database, Geothermal resources, Geothermal potential, Hydrochemistry, Hierarchical cluster analysis, SerbiaTanja Petrović Pantić, Katarina Atanasković Samolov, Jana Štrbački, Milan Tomić. "Geothermal potential, chemical characteristic and utilization of groundwater in Serbia" in Environmental Earth Sciences, Springer Link (2021). https://doi.org/https://doi.org/10.1007/s12665-021-09985-w
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Transboundary groundwater resource management: needs for monitoring the Cijevna River Basin (Montenegro–Albania)
The transboundary Cijevna River Basin shared between Albania and Montenegro has a surface area of 650 km2. It is extremely important for water management, especially in the country of Montenegro which is downstream. Due to the high permeability of both the karst and intergranular aquifers that exist in the basin, the River Cijevna sinks along the length of its riverbed and in summer months it usually dries up completely at the confluence section. Hydrometry surveys undertaken during a drought ...Upravljanje međugraničnim vodama, ranjivost podzemnih voda, monitoring mreža, karstne izdani, Albanija, Crna GoraMomčilo Blagojević, Zoran Stevanović, Milan Radulović, Veljko Marinović, Branislav Petrović. "Transboundary groundwater resource management: needs for monitoring the Cijevna River Basin (Montenegro–Albania)" in Environmental Earth Sciences, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s12665-020-8809-8
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Режим изданских вода карстног платоа Бабине (ЈЗ Србија, Пријепоље)
Бранислав Петровић, Вељко Мариновић, Зоран Стевановић, Саша Милановић, Љиљана Васић. "Режим изданских вода карстног платоа Бабине (ЈЗ Србија, Пријепоље)" in I скуп Одељења за математику, физику и гео-науке, 27.2.2021. , Београд : САНУ, Посебна издања Књ. DCXCVIII, Одељење за математику, физику и гео-науке (2021)
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Procena razvoja politike ublažavanja uticaja na klimatske promene i prilagođavanja klimatskim promenama za Srbiju AMS metodom
Madžarević Aleksandar, Crnogorac Miroslav, Živković Marija, Ivezić Dejan, Petrović T.. "Procena razvoja politike ublažavanja uticaja na klimatske promene i prilagođavanja klimatskim promenama za Srbiju AMS metodom" in Energija, Ekologija-Energetika no. 41671, Beograd:Savez energetičara (2014): 148-155