Претрага
426 items
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First Record of Fossil Fish (Enchodontoidei, Actinopterygii) in the Struganik Quarry in Western Serbia
Katarina Bradić-Milinović, Dragana Đurić, Nevenka Đerić, Ivana Petrović, Nemanja Krstekanić, Uroš Stojadinović (2022)Katarina Bradić-Milinović, Dragana Đurić, Nevenka Đerić, Ivana Petrović, Nemanja Krstekanić, Uroš Stojadinović. "First Record of Fossil Fish (Enchodontoidei, Actinopterygii) in the Struganik Quarry in Western Serbia" in Geološki anali Balkanskoga poluostrva (2022)
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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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Laboratory evaluation of diatomaceous earth deposits mined from several locations in central and southeastern Europe as potential protectants against coleopteran grain pests
Athanassiou Christos, Kavallieratos Nickolas, Vayias Basileios, Tomanović Željko, Petrović Anđelko, Rozman Vlatka, Adler Cornel, Korunić Zlatko, Milovanović Dragan (2011)Athanassiou Christos, Kavallieratos Nickolas, Vayias Basileios, Tomanović Željko, Petrović Anđelko, Rozman Vlatka, Adler Cornel, Korunić Zlatko, Milovanović Dragan. "Laboratory evaluation of diatomaceous earth deposits mined from several locations in central and southeastern Europe as potential protectants against coleopteran grain pests" in Crop Protection 30 no. 3, London, England:Elsever Sci Ltd, The Boulevard, Lanford Lane, Kidlington, Oxford OX5 1GB, Oxon, England (2011): 329-339. https://doi.org/10.1016/j.cropro.2010.10.004
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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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Analiza rizika flotacijskih jalovišta
U Srbiji i u svetu, dogodile su se brojne akcidentne situacije na flotacijskim jalovištima usled havarija. Pojave akcidenata zaslužuju da budu predmet istraživanja u cilju otkrivanja mehanizma njihovog nastajanja, obima i dometa ugrožavanja kako života ljudi tako i životne sredine, kako bi se inicirali zahtevi za projektovanje i ugradnju zaštitnih sistema čija pouzdanosti treba da bude veća od ukupne verovatnoće opasnosti. U ovom radu je dat primer i prikazana je analiza rizika od pojave akcidentnih situacija gde se naglašava ...Sandra Milutinović, Milena Kostović, Ljubiša Obradović, Sanja Petrović, Srđana Magdalinović. "Analiza rizika flotacijskih jalovišta" in X Kolokvijum o pripremi mineralnih sirovina, Univerzitet u Beogradu, Rudarsko-geološki fakultet, 08.12.2023., Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet (2023)
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Развој алгоритма процене ефеката ризика рада рударских машина на бази фази алгебре
Dejan V. Petrović (2014-12-30)Појава изненадних отказа елемената техничких система у рударству је свакодневна појава...Dejan V. Petrović. "Развој алгоритма процене ефеката ризика рада рударских машина на бази фази алгебре" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-12-30)
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Methods of transportation and discharge of tails to flotation tailings pond
There are different ways of transporting tailings to flotation tailings, this paper presents all of them that are in use in Europe. For conventional storage, tailings are generally discharged from outfalls located along the embankments (dams) of the facility. For surface thickened disposal and paste storage, the tailings are generally discharged from a central location - either through risers or from point sources that are raised during the life of the plant. There is also dry stacking of tailings, ...Sandra Milutinović, Milena Kostović, Ljubiša Obradović, Srđana Magdalinović, Sanja Petrović. "Methods of transportation and discharge of tails to flotation tailings pond" in The 54th International October Conference on Mining and Metallurgy 18-21 October 2023, Bor Lake, Serbia, Bor : University of Belgrade, Technical Faculty in Bor (2023)
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Valorization of non-balanced coal reserves in Serbia for underground coal gasification
David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić (2019)In the name of a better and safer energy future, it is our responsibility to focus our knowledge and activities to save on imported liquid and gas fossil fuels, as well as coal on which energy security of Serbia is based. The rationalization in the use of available energy resources certainly positively affects economy and the environment of a country. This paper indicates motivations for the application of the underground coal gasification process, as well as surface gasification for ...... dr.rgf.bg.ac.rs Petrović, D. T., et al.: Valorization of Non-Balanced Coal Reserves in Serbia for ... THERMAL SCIENCE: Year 2019, Vol. 23, No. 6B, pp. 4067-4081 4067 VALORIZATION OF NON-BALANCED COAL RESERVES IN SERBIA FOR UNDERGROUND COAL GASIFICATION by David T. PETROVIĆ“, Lazar M. KRIČAK” ...
... Moscow, Russia, 2004 11| Petrović, D. et. al., Possibilities of Coal Conversion into Gas Fuel from the Aspect of Greater Valorization of Available Energy Resources in Serbia by Implementing UCG, RMZ-Materials and Geoenvironment, 57(2010), 1, pp.113-125 Petrović, D. T., et al.: Valorization ...
... Измењено: 2023-10-16 12:33:22 Valorization of non-balanced coal reserves in Serbia for underground coal gasification David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić Дигитални репозиторијум Рударско-геолошког ...David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić. "Valorization of non-balanced coal reserves in Serbia for underground coal gasification" in Thermal Science (2019). https://doi.org/10.2298/TSCI190725390P
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Definisanje specifičnih uslova dreniranja podzemnih voda na karstnim vrelima Krupac 1 i 2
Kristina Gavrilović (2024)Izvorište Krupac se nalazi u jugoistočnom delu Srbije, u blizini grada Pirota i deo je sistema za vodosnabdevanje grada i okolnih mesta. Vrela Krupac 1 i Krupac 2 su gravitaciona karstna vrela, locirana na kontaktu jursko-krednog kompleksa stena sa neogenim naslagama Pirotske kotline, čije su specifičnosti uslova dreniranja, kao i uslova cirkulacije, ispitane hidrohemijskim i izotopskim metodama, kao i opitom obeležavanja ponora Golema dubka. Ustanovljeno je da se radi o mladim vodama i sistemu bez duboke cirkulacije podzemnih voda, ...... vrela, neophodno je oceniti opšti bilans podzemnih voda u slivu. Za ocenu bilansa primenjena je opšta bilansna jednačina (prema Stevanović, 1995; 2015a, Milanović & Petrović, 2022): P=-Q+Š (ulaz = izlaz + gubici); gde su: P – veličina padavina u slivu; Q – izdašnost vrela, ı č — suma svih gubitaka ...
... skladu sa tim, nekoliko projekata, kao što su „Bilans podzemnih voda u Srbiji“ (Dimkić i Đurić, 2010, Milanović & Petrović, 2022) ı „Monitoring resursa podzemnih voda u Srbiji“ (Stevanović et al. 2010) su realizovani u periodu 2007-2011 i prekinuti su zbog nedostatka finansijskih sredstava upravo pred ...
... 9-20, Pirot, UDK: 551.582 (481.11) Milanović S., Stevanović Z., Vasić LJ., (2010) Monitoring podzemnih voda Beljaničkog masiva u funkciji formiranja modela karstnog sistema, Vodoprivreda 0350-0519, 42 (2010) 246-248 p. 199-212 Milanović S., Petrović B., (2022): Prvi elaborat o rezevrama izvorišta ...Kristina Gavrilović. Definisanje specifičnih uslova dreniranja podzemnih voda na karstnim vrelima Krupac 1 i 2, 2024
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DNA/BSA interactions and cytotoxic studies of tetradentate N,N,O,O Schiff base copper(II) complexes
Aleksandar Mijatović, Angelina Caković, Aleksandar Lolić, Snezana Sretenović, Marko Živanović, Dragana Seklić, Jovana Bogojeski, Biljana Petrović (2023)Three Schiff base Cu(II) complexes, (N,N’-bis(acetylacetone)propylenediimine)copper(II) complex, [Cu(acac2pn)] (1), (N,N'-bis-(benzoylacetone)propylenediimine)copper(II) complex, [Cu(phacac2pn)] (2) and (N,N’-bis-(trifluoroacetylacetone)propylenediimine)copper(II) complex, [Cu(tfacac2pn)] (3), were used to investigate the interactions with calf thymus DNA (ct-DNA) and bovine serum albumin (BSA) using the electronic absorption and spectroscopic fluorescence methods. UV-Vis absorption studies showed that studied complexes interact with DNA molecule and exhibit moderate binding affinity. Fluorescence studies of complexes 1-3 also showed a possibility for DNA intercalation as well as a relatively high binding ability ...Aleksandar Mijatović, Angelina Caković, Aleksandar Lolić, Snezana Sretenović, Marko Živanović, Dragana Seklić, Jovana Bogojeski, Biljana Petrović. "DNA/BSA interactions and cytotoxic studies of tetradentate N,N,O,O Schiff base copper(II) complexes" in Journal of the Serbian Chemical Society (2023). https://doi.org/10.2298/JSC230614063M
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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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Project REASONING: Characterization and technological procedures for recycling and reusing of the rudnik mine flotation tailings
Vesna Cvetkov, Vladimir Simić, Stefan Petrović, Filip Arnaut, Milena Kostović, Dragan Radulović, Jovica Stojanović, Vladimir Jovanović, Dejan Todorović, Nina Nikolić, Jelena Senćanski, Grozdanka Bogdanović, Dragana Marilović (2024)Vesna Cvetkov, Vladimir Simić, Stefan Petrović, Filip Arnaut, Milena Kostović, Dragan Radulović, Jovica Stojanović, Vladimir Jovanović, Dejan Todorović, Nina Nikolić, Jelena Senćanski, Grozdanka Bogdanović, Dragana Marilović. "Project REASONING: Characterization and technological procedures for recycling and reusing of the rudnik mine flotation tailings" in 5th Congress Geologists of the Republic of North Macedonia, Ohrid, 28-29. 10. 2024, Македонско геолошко друштво (2024)
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Status and tendencies under development and application of underground coal gasification-UCG
Podzemna gasifikacija uglja u Svetu poslednjih decenija doživljava znatnu ekspanziju u istraživanju i razvoju zbog uveliko iskorišćenih ležišta uglja i loših ekoloških efekata (pri sagorevanju u TE) na životnu okolinu. Srbija ima znatne rezerve uglja, a kada bi se za PGU koristile samo vanbilansne rezerve i otkopni ostaci bilansnih, jasno je kakvi bi bili ekonomski (a i energetski i ekološki) efekti. U radu su sagledane aktivnosti u Svetu na tom planu, pa smatramo da ima smisla i potrebe za primenu ove ...David Petrović, Lazar Kričak, Stefan Milanović, Jovan Marković, Nikola Simić. "Status and tendencies under development and application of underground coal gasification-UCG" in International Conference “Energy and Ecology Industry EEI2018”, Beograd : Akademija inženjerskih nauka Srbije (AINS) (2018)
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The influence of structural modification of Pd(II) pincer-type complexes on the kinetics of substitution reactions
Snežana Jovanović Stević, Snežana Radisavljević, Aleksandar Mijatović, Biljana Petrović, Ana Kesić (2023)This mini-review summarizes the kinetic data obtained for the substitution reactions of some palladium(II) complexes containing bis-pyrazolylpyridine derivatives as pincer-type ligands with biologically significant nitrogen- and sulfur-donor biomolecules as nucleophiles. Three structurally different palladium(II) complexes were selected: [Pd(L1)Cl]+ (Pd1), [Pd(L2)Cl]+ (Pd2) and [Pd(L3)Cl]+ (Pd3) (where L1 = bis(2-(1H-pyrazol-1-yl)ethyl)amine, L2 = 2,6-bis(5-(tert-butyl)-1H-pyrazol-3-yl)pyridine, and L3 = 2,6-bis(5-(tert-butyl)-1-methyl-1H-pyrazol-3-yl)pyridine, while for the entering nucleophiles were used thiourea (Tu), L-methionine (L-met), and guanosine-5’-monophosphate (5’-GMP). Kinetic measurements were carried out for all systems as pseudo-first ...Snežana Jovanović Stević, Snežana Radisavljević, Aleksandar Mijatović, Biljana Petrović, Ana Kesić. "The influence of structural modification of Pd(II) pincer-type complexes on the kinetics of substitution reactions" in 2nd International Conference on Chemo and BioInformatics ICCBIKG 2023, 28-29 September 2023, Institute for Information Technologies, University of Kragujevac, Serbia, Kragujevac : Institute for Information Technologies, University of Kragujevac (2023)
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A new evidence for pachyostotic snake from Turonian of Bosnia-Herzegovina
Фосилни налази морских змија из кредних седимената Босне и Херцеговине познати су од пре скоро сто година. У овом раду је приказан нови налаз пахиостотичне змије пронађене у локалном каменолому Дубовац, око три километра северозападно од Билеће. Примерак чини низ од 29 кичмених пршљенова од којих су седам изоловани из седимента. Међу изолованим пршљеновима два најочуванија су својим скоро четвртастим обликом слична пршљеновима Simoliophis rochebrunei али су неурални луци више отечени. Пршљенови и ребра показују висок степен пахиостозе као ...Dragana Đurić, Dragoslav Radosavljević, Dragana Petrović, Miloš Radonjić, Petar Vojnović. "A new evidence for pachyostotic snake from Turonian of Bosnia-Herzegovina" in Geološki anali Balkanskoga poluostrva (2017). https://doi.org/10.2298/GABP1778017D
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Interactions of Copper(II) Complexes of some Schiff base ligands with calf thymus DNA and bovine serum albumin
Joni prelaznih metala u kombinaciji sa različitim ligandima nude veliki broj mogućnosti za ispitivanje potencijalnih bioaktivnosti. Među jonima prelaznih metala, bakar je poznat kao endogeni metal za ljude, sa karakterističnim biološkim redoks aktivnostima i relativno jakim afinitetom za nukleobaze. Kompleksi bakra ispoljavaju svoju antitumornu aktivnost na nekoliko različitih načina, generišu veliku količinu ROS, što uzrokuje oksidativno oštećenje mitohondrija i biomakromolekula. Nađeno je da kompleksi bakra(II) imaju umeren do dobar afinitet vezivanja sa DNK, uglavnom putem interkalacije.Angelina Petrović, Aleksandar Mijatović, Rada Baošić, Jovana Bogojeski. "Interactions of Copper(II) Complexes of some Schiff base ligands with calf thymus DNA and bovine serum albumin" in 6. Konferencija mladih hemičara Srbije, Srpsko hemijsko društvo (2018)
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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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Application of Peleg model on mass transfer kinetics during osmotic dehydratation of pear cubes in sucrose solution
Vesna Pavelkić, Tanja Brdarić, Marija Petrović, Gavrilo Šekularac, Milica Košević, Lato Pezo, Marija Ilić (2015)The applicability of Peleg model was investigated for predicting mass transfer kinetics during the osmotic dehydration (OD) process of pears, at different concentrations (40, 60 and 70%, w/w) and temperatures (20, 35 and 50 °C) of sucrose solution. Increase in sucrose solution concentration resulted in higher water loss (WL) and solid gain (SG) values through the osmotic treatment period. After 360 min of osmotic treatment of pears, WL ranged from 23.71 to 31.68% at 20 °C, from 24.80 to ...Vesna Pavelkić, Tanja Brdarić, Marija Petrović, Gavrilo Šekularac, Milica Košević, Lato Pezo, Marija Ilić. "Application of Peleg model on mass transfer kinetics during osmotic dehydratation of pear cubes in sucrose solution" in Chemical Industry and Chemical Engineering Quarterly (2015). https://doi.org/10.2298/CICEQ141014004P
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Influence of Post-Synthesis Treatments on the Properties of Brushite/Monetite Powders
Željko Radovanović, Lidija Radovanović, Aleksandar Kremenović, Đorđe Janaćković, Rada Petrović (2022)Dicalcium phosphate (DP) materials, of which brushite and monetite were the most known, have been intensively studied for several decades because of excellent resorptive and osteoconductive properties that can satisfy the requirements needed for various medical applications, such as bone cements, coatings of metallic implants and bone grafts ...Željko Radovanović, Lidija Radovanović, Aleksandar Kremenović, Đorđe Janaćković, Rada Petrović. "Influence of Post-Synthesis Treatments on the Properties of Brushite/Monetite Powders " in Second International Conference on Electron Microscopy of Nanostructures ELMINA 2022, August 22nd–26th, 2022, Belgrade, Serbia, Serbian Academy of Sciences and Arts Knez Mihailova 35, 11000 Belgrade, Serbia (2022)
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Ocena zaštitne funkcije povlatnih slojeva izvorišta Jasik (Opština Batočina) primenom GLA metode
U cilju utvrđivanja rezervi podzemnih voda i analize uslova zaštite u periodu 2012. i 2013. godine, sprovedena su detaljna hidrogeološka istraživanja na području izvorišta Jasik (opština Batočina). Uspostavljen je sistem monitoringa, čiji je rezultat predstavljao prikupljanje detaljnih hidrogeoloških podataka. Za potrebe analize, izrađen je hidrodinamički model, na osnovu koga je simulirano kretanje podzemnih voda, odnosno, utvrđene zone sanitarne zaštite. Pored navedenog, za potrebe utvrđivanja uslova zaštite podzemnih voda, bilo je neophodno utvrditi podložnost aluvijalne izdani izvorišta Jasik zagađenju. Polazeći ...Rastko Petrović, Igor Jemcov, Dušan Polomčić. "Ocena zaštitne funkcije povlatnih slojeva izvorišta Jasik (Opština Batočina) primenom GLA metode" in Vodoprivreda, Srpsko društvo za navodnjavanje i odvodnjavanje (2014)