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Упит dcterms_creator_txt:Dejan V. Petrović

1254 items

  • Pleistocene rhinoceros from Bogovina Cave: the first report of Stephanorhinus hundsheimensis Toula, 1902 (Mammalia, Rhinocerotidae) from Serbia

    Predrag Radović, Miloš Radonjić, Emmanuel Billia (2020)
    Finds of Pleistocene rhinoceros are rare in Serbia, and only one species (the woolly rhinoceros Coelodonta antiquitatis Blumenbach, 1799) has been reported so far. The current paper presents the dental material of an extinct so-called Hundsheim rhinoceros, Stephanorhinus hundsheimensis Toula, 1902 from Bogovina Cave (East ern Serbia). Both the morphological and metric characteristics of the teeth are consis tent with the attribution to S. hundsheimensis. Unfortunately, the rhinoceros material originated from an uncertain geological context, so there is no ...
    rhinoceros, Stephanorhinus hundsheimensis, Serbia
    ... hund- sheimensis display V-shaped valleys (although the distal valleys can be broad V-shaped), while man- dibular molars display V-shaped to broad V-shaped mesial valleys and broad V-shaped to U-shaped distal valleys. The HMP-407 lower premolar shows a V-shaped mesial and broad V-shaped distal val- ley ...
    ... a tectonic depression filled with up to 380 m thick Upper Oligocene to Upper Miocene sediments with coal deposits (Cvetičanin and Novković, 1975; Petrović, 1977). With 6 km of explored channels, Bogovina Cave is one of the largest in Serbia (Milanović, 2015), and it is categorized as a spelaeological ...
    ... for revising the three other skulls from the Po Valley. Quaternary Science Reviews, 109:28-37. https://doi.org/10.1016/j.quascirev.2014.11.022 Petrović, D. 1977. Morfologija i geneza Bogovinske pećine. Zbornik radova Geografskog instituta „Jovan Cvijić“ Beograd, 29:81-103. Pušić, M. and Stevanović ...

  • Analiza rizika flotacijskih jalovišta

    Sandra Milutinović, Milena Kostović, Ljubiša Obradović, Sanja Petrović, Srđana Magdalinović (2023)
    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 ...
    Jalovišta, akcidantne situacije, izlivanje jalovine, poplavni talas

  • Methods of transportation and discharge of tails to flotation tailings pond

    Sandra Milutinović, Milena Kostović, Ljubiša Obradović, Srđana Magdalinović, Sanja Petrović (2023)
    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, ...
    Tailings, transportation,discharge, methods

  • The Newton method for solving nonlinear equations based on aggregation operators

    Nebojša M. Ralević, Dejan Ćebić (2019)

  • William „Strata” Smith, otac engleske geologije– 250 godina od rođenja

    Dejan Radivojević (2019)
    Smit, stratigrafija, godišnjica
    ... S N I C I S R P S K O G G E O L O [ K O G D R U [ T V A za 2019. godinu COMPTES RENDUS DES SÉANCES DE LA SOCIÉTÉ SERBE DE GÉOLOGIE pour les année 2019 REPORTS OF THE SERBIAN GEOLOGICAL SOCIETY for the year 2019 Beograd, 2019. Dejan Radivojević1 WILLIAM „STRATA” SMITH, OTAC ENGLESKE ...
    ... „Strata” Smith, otac engleske geologije– 250 godina od rođenja Dejan Radivojević Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] William „Strata” Smith, otac engleske geologije– 250 godina od rođenja | Dejan Radivojević | Zbornik radova Srpskog geološkog društva | ...

  • A multi-criteria approach for assessing the potential of renewable energy sources for electricity generation: Case Serbia

    Boban Pavlović, Dejan Ivezić, Marija Živković (2021)
    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 ...
    Proizvodnja električne energije, Obnovljivi izvori energije, Višekriterijumsko odlučivanje, Srbija
    ... Boban Pavlović, Dejan Ivezić, Marija Živković Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] A multi-criteria approach for assessing the potential of renewable energy sources for electricity generation: Case Serbia | Boban Pavlović, Dejan Ivezić, Marija Živković ...
    ... (Chang, 1996). The degree of possibility of M1 ≥ M2 is defined as: V (M1 ≥ M2) = sup x≥y [min (µM1 (x) , µM2 (y))] (6) Since M1 and M2 are convex fuzzy numbers then the following rules are applied: V (M1 ≥ M2) = 1 iff m1 ≥ m2 (7) V (M2 ≥ M1) = hgt(M1 ∩ M2) = µM1(d) where d is the ordinate of the ...
    ... the ordinate d is given by next equation: V (M2 ≥ M1) = hgt(M1 ∩ M2) = µM2 (d) (8) µM2 (d)= ⎧ ⎪ ⎨ ⎪ ⎩ 1, if m2 ≥ m1 0, if l1 ≥ u2 l1−u2 (m2−u2)−(m1−l1) otherwise To compare M1 and M2, it is needed to calculate both the values of V(M1≥ M2) and V(M2≥ M1). The degree possibility for a convex ...

  • XRD dertermination od hydrothermal phases related to epithermal mineralization in the Čukaru Peki deposit

    Dragana Bosić, Vladica Cvetković, Miodrag Banješević, Kristina Šarić (2024)
    Čukaru Peki, epithermal mineralization, hydrothermal alterations

  • Primjena magnetometrijskih ispitivanja na arheološkom lokalitetu Nedeljkova humka

    Mirko Petković, Vesna Cvetkov, Milorad Ignjatović, Dejan Naumov (2020)
    ... Cvetkov, Milorad Ignjatović, Dejan Naumov Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Primjena magnetometrijskih ispitivanja na arheološkom lokalitetu Nedeljkova humka | Mirko Petković, Vesna Cvetkov, Milorad Ignjatović, Dejan Naumov | Aktuelna interdisc ...
    ... ki fakultet, Univerzitet u Beogradu Vesna Cvetkov Rudarsko-geološki fakultet, Univerzitet u Beogradu Milorad Ignjatović Muzej grada Beograda Dejan Naumov Rudarsko-geološki fakultet, Univerzitet u Beogradu Ključne riječi:, cik-cak i paralelni profili, linijske anomalije, Pančevački rit, višeslojno ...
    ... još i „cik-cak“ način akvizicije. 27 A k t u e l n a i n t e rd i s c p l i n a r n a i s t ra ž i v a n j a t e h n o l o g i j e u a r h e o l o g i j i j u g o i s t o č n e E v ro p e Drugi način akvizicije, paralelni način, od gore opisanog razlikuje se po tome što operater nakon ...

  • 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 ...
    General Chemistry

  • Numerical modeling of Selanac debris flow propagation using SPH code

    Jelka Krušić, Biljana Abolmasov, Miloš Marjanović, Manuel Pastor, Saeid M. Tayyebi (2021)
    The Selanac debris flow is a very huge event triggered after extreme rainfall caused by Cyclone Tamara activity in the Republic of Serbia in May 2014. The Selanac case study was already modelling in different programs using Voellmy rheology assumptions like RAMMS software. In this paper research are focusing particularly on the process of debris flowing from initiation zone to main deposition area using Geoflow SPH two-phase model considering frictional rheology law. Main rheological parameters are back-calculated using also ...
    debris flow, modelling, SPH code, DEM
    ... (4):610-623. Iverson, R.M. (1997). ‘’The physics of debris flows’’. Reviews of Geophysics 35 (3): 245-296. Krušić, J., Abolmasov, B. and Samardžić-Petrović, M. (2019).‘’Influence of DEM resolution on numerical modelling of debris flows in RAMMS - Selanac case study’’, Proceeding of the 4th Regional ...
    ... considering the calculation of erosion rate, i.e. time derivative of the ground surface elevation, which is supposed equal the product of velocity (v), propagation height (h) and “landslide grow rate” (Er). The latter is independent to the flow velocity and is related by Hungr (1995) to the initial ...
    ... equation (5) The erosion rate can be modelled as proportional to the product of velocity (v) and propagation height (h). 4 RESULTS DTM of 5x5m resolution is used as main topo file, with 133 452 points. Definition of the source area was ...

  • Poreklo asocijacije Ni, Ag i Sn minerala u polimetaličnom ležištu Rudnik

    Stefan Petrović, Aleksandar Pačevski, Viktor Bertrandson Erlandson, Rade Jelenković (2022)
    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 ...
    Rudnik, ferokesterit, argentopentlandit, harcburgit, rudne žice

  • Status and tendencies under development and application of underground coal gasification-UCG

    David Petrović, Lazar Kričak, Stefan Milanović, Jovan Marković, Nikola Simić (2018)
    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 ...
    energetika, ugalj, ekologija, gasifikacija

  • Mean-based iterative methods for finding multiple roots in nonlinear chemistry problems

    Dejan Ćebić, Nebojša M. Ralević (2021)
    нелинеарне једначине, поступци засновани на срединама, вишеструки корени,

  • 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 ...

  • A new evidence for pachyostotic snake from Turonian of Bosnia-Herzegovina

    Dragana Đurić, Dragoslav Radosavljević, Dragana Petrović, Miloš Radonjić, Petar Vojnović (2017)
    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 ...
    турон, Билећа, змије са ногама, пахиостоза, Pachyophis

  • Geothermal potential, chemical characteristic and utilization of groundwater in Serbia

    Tanja Petrović Pantić, Katarina Atanasković Samolov, Jana Štrbački, Milan Tomić (2021)
    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, Serbia

  • 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 ...
    осмотска дехидрација, крушкa, кинетика, температурни ефекат, Пелег модел

  • Ocena zaštitne funkcije povlatnih slojeva izvorišta Jasik (Opština Batočina) primenom GLA metode

    Rastko Petrović, Igor Jemcov, Dušan Polomčić (2014)
    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 ...
    Izvorište Jasik, GLA metoda, zaštita podzemnih voda

  • Optimizacija ugla nagiba generalne kosine unutrašnjeg odlagališta površinskog kopa Tamnava-Zapad

    Natalija Pavlović, Branko Petrović, Tomislav Šubaranović, Ivan Janković (2022)
    Formiranje geomehanički tabilnih unutrašnjih odlagališta otkrivke ima izuzetno značajnu ulogu pri projektovanju i planiranju razvoja površinskih kopova uglja sa aspekta preraspodele masa otkrivke, dinamike eksploatacije, ekoloških zahteva, rudarskih rizika i troškova. Uvećanje zavodnjenosti unutrašnjeg odlagališta otkrivke površinskog kopa Tamnava-Zapadno Polje, kao posledica globalnih klimatskih promena sa pojavom katastrofalnih obimnih padavina i velike poplave, dovelo je i do značajnih ali i trajnih promena geomehaničkih karakteristika materijala, umanjenja stabilnosti generalne kosine unutrašnjeg odlagališta i znatnog povećanja rudarskog rizika. Inovirane varijantne ...

  • Development of integrated fuzzy model for mine management optimization

    Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić (2023)
    fuzzy logika, višekriterijumsko odlučivanje, ocenjivanje eksperata
    ... Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Development of integrated fuzzy model for mine management optimization | Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško ...
    ... comparison approach: V(M, > W)= sup |min (Jr, () , R,Ma (9))] . z>u If there are such pairs (z,y) that r > y and a (T) = HM,(U) = l, then V (Mi > M») = 1. Given that Mi and M»are convex triangular fuzzy number, it follows that V(]Wl > ]Wz) =LlL if si > 5 1, if 2 Ž ı V (M> > Mi) = hgt(My n ...
    ... ag, and /M5- Both V (Mi > M») and V (M» > Mh\) are required to compare Mi and Mo. The degree of possibility of a convex triangular fuzzy number, so that it is greater than k of convex fuzzy number M, where i = 1,2,..., k, can be defined . other as V(M > Mi,Wb,.... My) = V|(M > Mi)A(M > M»)A·--A(M ...