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Упит dcterms_creator_txt:Tomić N.

804 items

  • Improving efficiency of thermal power plants through mine coal quality planning and control

    Mirjana Banković, Dejan Stevanović, Milica Pešić, Aleksandra Tomašević, Ljiljana Kolonja (2018)
    Главни циљ контроле квалитета угља у рудницима лигнита је снабдевање термоелектрана угљем чији квалитет мора да се креће унутар одређених квалитативних ограничења. Карактеристике угља могу да утичу на ефикасност, поузданост и расположивост како котла тако и јединица за контролу емисије. У овом раду аутори су презентовали интегрисану симулацију рударског процеса као нови приступ у истраживању променљивости калоричне вредности угља приликом експлоатације комплексног лежишта лигнита. Резултати таквог приступа омогућавају драгоцен увид у перформансе континуалног рударског система у смислу контроле променљивости ...
    mine planning, variability of coal quality, simulation, coal blending

  • Analiza pouzdanosti dozera angažovanih na površinskim kopovima RB Kolubara

    Filip Miletić, Dragan Milčić, Miloš Tanasijević, Miloš Milovančević (2021)
    U radu je izvršena uporedna analiza pouzdanosti transportnih sistema dozera koji rade na površinskim kopovima Rudarskog basena Kolubara. Period za koji je vršena analiza je prvih deset godina eksploatacije. Efikasnost tehnološkog procesa na otkopavanju korisne mineralne sirovine i otkrivke u velikoj meri zavisi od rada dozera. Iskorišćene su matematičke metode za aproksimaciju i identifikaciju zabeleženih vremena u radu, kako bi se dobili analitički pokazatelji pouzdanosti. Na ovaj način se bitno podiže kvalitet upravljanja procesom eksploatacije i održavanja mašina na ...
    dozeri, pouzdanost, kolubarski ugljeni basen
    ... t, h 440,00 880,00 1320,00 1760,00 2200,00 3080,00 t, 1000 h 0,44 0,88 1,32 1,76 2,2 3,08 N (t) 15 15 5 5 1 1 N (t) 15 30 35 40 41 42 n (t) 27 12 7 2 1 0 n (t-t) 42 27 12 7 2 1 MR, % 34,6698 70,0472 81,8396 93,6321 95,9906 98,3491 Fe (t), - 0 ...
    ... 285,00 570,00 855,00 1140,00 1425,00 1995,00 t, 1000 h 0,285 0,57 0,855 1,14 1,425 1,995 N (t) 13 15 5 6 2 2 N (t) 13 28 33 39 41 43 n (t) 30 15 10 4 2 0 n (t-t) 43 30 15 10 4 2 MR, % 29,2627 63,8249 75,3456 89,1705 93,7788 98,3871 Fe (t), - 0 ...
    ... 00 690,00 920,00 1150,00 1380,00 1610,00 t, 1000 h 0,23 0,46 0,69 0,92 1,15 1,38 1,61 N (t) 6 8 8 6 8 3 1 N (t) 6 14 22 28 36 39 40 n (t) 34 26 18 12 4 1 0 n (t-t) 40 34 26 18 12 4 1 MR, % 14,1089 33,9109 53,7129 68,5644 88,3663 95,7921 98,2673 ...

  • Analysis and visualization of geophysical well-logging data from closely spaced boreholes

    Branislav Sretković, Ivana Vasiljević, Dimitry Sidorov - Biryukov (2024)
    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 ...
    well-logging in karst, water loss, data correlation, data fusion
    ... IIpoQ. m-p Bnaxo Boen Opranu3anuckKu o0/10o0p: IIpoQ. n-p Coma JIenarKoBa M-p /lgHMurap IIerpoB IIpoQ. n-p Munopajn JOBaHOBCKH ~ M-Pp 3aTKoO IIenTeKOBCKH IIpoQ. n-p Fopru JUHMoB, Ooperr duuc IIpodo. n-p TopaH TacenB, Maja JoBaHoBa IIpoQ. n-p /[lejah MupakoBckui Mutnte TpkajteckH Np Baapa HayaQ ...
    ... eoprHMeB IIpoQ. -p HnaH BoeB IIpoQ. -p Bojo MipuoBckH IIpoQ. -p TeHa IIwjakoBa HBaHoBa IIpoQ. -p Opne CnacoBckH TIpoQ. n-p TFome Ilerpon Jlon. n-p JIasap Fopruen n-p Kocra JoBaHOB IIouecenH on0op: IIpoQ. -p Hukoma /[yMypuaHoB IIpoQ. -p Banuo dudoimaraerm IIpoQ. -p Tonmop /lemHmeTpoB ...
    ... Milanović S., Vasić LJ., 2016: 3D Conduit modelling of leakage below a dam situated in highly karstified rocks. In: Stevanovic Z, Krešić N & Kukuric N (eds) Karst without Boundaries, 1Ird edn. CRS Press, Taylor & Francis group, pp 321-336. Sretković B., Vučković D., 2020: Geophysical seismic ...

  • Effects of external noise on threshold-induced correlations in ferromagnetic systems

    Dragutin Jovković, Sanja Janićević, Svetislav Mijatović, Lasse Laurson, Đorđe Spasojević (2021)
    Изингов модел, праг детекције, екстерни шум

  • Geotehničko istraživanje terena za potrebe izgradnje mosta „Mihajlo Pupin“ u Zemunu

    Luka Malenov (2024)
    Za potrebe izrade završnog rada na četvrtoj godini Rudarsko-geološkog fakulteta, studijskog programa Geotehnika, pod mentorstvom doc. dr Dušana Berisavljevića, analizirani su parametri dobijeni laboratorijskim ispitivanjima, kao i in-situ istraživanjima terena i ustanovljeni su geotehnički uslovi izgradnje mosta Zemun-Borča. Takođe, izvršeno je određivanje karakterističnih vrednosti geotehničkih parametara, koje se izučava u sklopu obaveznog predmeta u četvrtoj godini: Projektovanje inženjerskogeoloških radova. Detaljna geotehnička istraživanja terena, izveo je Saobraćajni institut CIP iz Beograda, za potrebe izrade Glavnog projekta mosta Mihajlo Pupin preko Dunava, ...
    tlo, most, geotehnički parametri, karakteristične vrednosti geotehničkih parametara
    ... obrascu (Terzaghi i Peck, 1948): N = 15+0,5x(N'-15) (3.2) Korigovan broj udaraca. N se potom redukuje na 60% energetske vrednosti (N«6o0). Neo predstavlja broj udaraca N koji bi se dobio kada bi energetska efikasnost sistema bila standardizovana na 60%. To je korigovana vrednost broja udaraca, koja ...
    ... ({%Ž al-j p% Gp 31.4; 27”756'šal'j pr:+SM/ML n O _ al-jpace SP 35,6 —30,50 }IJ 372 s o 33“40'///54%3'"' Pprs'SP a 316 777 Š 7 7070 ML 10. 35.0 OStale Oznake' ' , - -| [-S- . 29.00. B ~ -| · i i // al-j par p 7 ap % 7 /l@fs·)/% al-j pp-< SP/SM N>šy -N>50 N //// 'EŽJ·FL Ž / al-j pps SP a Ppeć 2 ZS-15(72 ...
    ... BR:40 o le Š Š Š Žš G:;FIČKI š% LITOLOČKI OPIS šš š E ž. i IKAZ [e] š) o L_ mnm!| m | m x = mm| %| m '|MPo| m Woopoajia 1.3 K. ~.4 E _ CL N N N N J <| TnwHa- npauuwacro neckoBMTa, X%yTO- cMefje Goje, nako rhbeuMBOr g aj — A · —~ g_ craWbbsa KoHcMcTeHuMje, Mane uBpcTohe Ha cMMIiaMbe, BeoMa ...

  • Geotehničko istraživanje terena za potrebe izgradnje mosta „Mihajlo Pupin“ u Zemunu

    Luka Malenov (2024)
    Za potrebe izrade završnog rada na četvrtoj godini Rudarsko-geološkog fakulteta, studijskog programa Geotehnika, pod mentorstvom doc. dr Dušana Berisavljevića, analizirani su parametri dobijeni laboratorijskim ispitivanjima, kao i in-situ istraživanjima terena i ustanovljeni su geotehnički uslovi izgradnje mosta Zemun-Borča. Takođe, izvršeno je određivanje karakterističnih vrednosti geotehničkih parametara, koje se izučava u sklopu obaveznog predmeta u četvrtoj godini: Projektovanje inženjerskogeoloških radova. Detaljna geotehnička istraživanja terena, izveo je Saobraćajni institut CIP iz Beograda, za potrebe izrade Glavnog projekta mosta Mihajlo Pupin preko Dunava, ...
    tlo, most, geotehnički parametri, karakteristične vrednosti geotehničkih parametara
    ... obrascu (Terzaghi i Peck, 1948): N = 15+0,5x(N'-15) (3.2) Korigovan broj udaraca. N se potom redukuje na 60% energetske vrednosti (N«6o0). Neo predstavlja broj udaraca N koji bi se dobio kada bi energetska efikasnost sistema bila standardizovana na 60%. To je korigovana vrednost broja udaraca, koja ...
    ... ({%Ž al-j p% Gp 31.4; 27”756'šal'j pr:+SM/ML n O _ al-jpace SP 35,6 —30,50 }IJ 372 s o 33“40'///54%3'"' Pprs'SP a 316 777 Š 7 7070 ML 10. 35.0 OStale Oznake' ' , - -| [-S- . 29.00. B ~ -| · i i // al-j par p 7 ap % 7 /l@fs·)/% al-j pp-< SP/SM N>šy -N>50 N //// 'EŽJ·FL Ž / al-j pps SP a Ppeć 2 ZS-15(72 ...
    ... BR:40 o le Š Š Š Žš G:;FIČKI š% LITOLOČKI OPIS šš š E ž. i IKAZ [e] š) o L_ mnm!| m | m x = mm| %| m '|MPo| m Woopoajia 1.3 K. ~.4 E _ CL N N N N J <| TnwHa- npauuwacro neckoBMTa, X%yTO- cMefje Goje, nako rhbeuMBOr g aj — A · —~ g_ craWbbsa KoHcMcTeHuMje, Mane uBpcTohe Ha cMMIiaMbe, BeoMa ...

  • Organoselenium functionalized oxacycles as ligands in some trans-palladium(II) complexes: biological evaluation and interaction with small biomolecules

    I. Raković, D. Ćoćić, O. Milošević-Djordjević, I. Radojević, M. N. Živanović, K. Virijević, J. Pavić, J. Tubić Vukajlović, A. Marković, J. S. Marjanović, M. D. Kostić, P. Čanović, A. Mijatović, V. M. Divac (2023)
    In this article, the biological evaluation and interaction of three selenium-based trans-palladium complexes (Pd–Se1, Pd–Se2, and Pd–Se3) with small biomolecules were performed. The UV–Vis kinetic studies on substitution reaction of synthesized complexes with selected biologically important N- and S-bonding ligands (LCys, GSH, L-Met, 50-GMP, L-His) has emphasized greater affinity of sulphur-based ligands for complex-binding, while the general order of the reactivity was L-Cys > GSH > L-Met > 50-GMP > L-His. The complex reactivity toward small biomolecules is influenced ...
    Materials Chemistry, Physical and Theoretical Chemistry

  • SEM-EDS analysis and microindentation hardness study of n-type doped BiTeSe alloy single crystals

    Požega Emina, Ivanov Svetlana, Stević Zoran, Vuković Nikola, Gomidželović Lidija, Marković Ivana (2013)

  • Variation of olivine composition in the volcanic rocks in the Songliao basin, NE China: lithosphere control on the origin of the K-rich intraplate mafic lavas

    Zhang, L.-Y., Prelević Dejan, Li, N., Mertz-Kraus, R., Buhre, S. (2016)

  • Contribution to the geotechnical classification of municipal waste landfills in Serbia

    Dragoslav Rakić, Irena Basarić, Laslo Čaki, Slobodan Ćorić (2018)
    Management, Monitoring, Policy and Law, Nature and Landscape Conservation, Geochemistry and Petrology, Waste Management and Disposal,Geotechnical Engineering and Engineering Geology,Water Science and Technology,Environmental Chemistry,Environmental Engineering

  • Paleomagnetism of the Latest Oligocene-Miocene extrusive igneous rocks from the Vardar zone and from the Serbian part of the Pannonian base

    Lesić Vesna, Márton Emo, Cvetkov Vesna, Knežević, Tomić Dragana (2011)

  • Paleomagnetic and magnetic anisotropy results from Miocene sediments of central and western Serbia

    Lesić Vesna, Márton Emo, Cvetkov Vesna, Knežević, Tomić Dragana (2014)

  • Criteria for CO2 storage in geological formations

    Tomić Lola, Karović-Maričić Vesna, Danilović Dušan, Crnogorac Miroslav (2018)

  • Characterization of Natural Clay from Bogovina (Serbia) and Possible Utilization in Sorption of the Herbicides

    Lazar Kaluđerović, Zorica Tomić, Rada Đurović-Pejčev, Maja Milošević (2021)
    ... ć, Zorica Tomić, Rada Đurović-Pejčev, Maja Milošević Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Characterization of Natural Clay from Bogovina (Serbia) and Possible Utilization in Sorption of the Herbicides | Lazar Kaluđerović, Zorica Tomić, Rada Đuro ...

  • Characterization of Natural Clay From Bogovina (Serbia) and Possible Utilization in Sorption of the Herbicides

    Lazar Kaluđerović, Zorica Tomić, Rada Đurović-Pejčev, Maja Milošević (2021)

  • Structural and microstructural study of brookite based TiO2 nanocomposites with carbon black (C)

    Aleksandar Kremenović, Mirjana Grujić-Brojčin, Nataša Tomić, Maja Šćepanović (2022)
    Structural and microstructural properties of TiO2-based nanocomposites with carbon black (C), synthesized by sol-gel-hydrothermal method, have been studied by XRPD and Raman scattering. Detailed size-strain analyses of XRPD and Raman scattering results are presented in order to investigate the influence of C content on brokite and anatase phase formation. The XRPD size-strain analyses have resulted in reliable structure and microstructure results for both anatase and brookite and their relative abundance ratio has been refined by Rietveld method. The brookite ...

  • Laboratory Testing of Nanosilica- Reinforced Silicate and Polyacrylamide Gels

    Irina Zahirovic, Dušan Danilović, Milica Šuput Vranjin, Miloš Tripković (2023)
    drilling fluid formulation, upstream oil and gas, fluid dynamics, fluid loss control, gel

  • Sedimentologija gornje krede centralnog dela vardarske zone

    Violeta M. Gajić (2014-09-04)
    Područje istraţivanja obuhvaćeno doktorskom disertacijom nalazi se ucentralnim delovima Vardarske zone. Karakteriše se sloţenom geološkomgrađom koju grade mezozojske tvorevine trijaske, jurske i kredne starosti, kao ikvartarni sedimenti. U trijasu je istraţivano područje pokrivalo more, sve dogranice sa Šumadijom. Tokom jure sloţenim geotektonskim procesima stvarajuse ofiolitske stene rasprostranjene u juţnim i delom u centralnim delovimaistraţivanog područja. U donjoj kredi se pokretima dinarske faze izdiglo kopno,koje je egzistiralo skoro u celoj donjoj kredi područja istraţivanja.U alb-cenomanu pojedini delovi istraţivanog područja se ...
    Vardarska zona, gornja kreda, transgresija, litostratigrafskejedinice, sedimentologija, turbiditi
    ... 3 13 8 18 4 14 9 19 G O R N J A K R E D A S A N T O N S A N T O N - ? K A M P A N g o rn ji s a n t o n - ? d o n j i k a m p a n O zn ak a uz or ak a Kalcitski alevrolit Laporac/Biomikrit Grudvasti ...
    ... lji na (m ) S ta ro st Grafički prikaz Litologija Tekstualni prikaz O zn ak a uz or ak a Sadržaj CaCO3 (%) S A N TO N K A M P A N K VA R TA R G O R N J A K R E D A Slika 8.37. Litostratigrafski stub bušotine na Rajcu, kod planinarskog doma. Sedimentologija gornje ...
    ... ST 46 ST 47 ST 48 ST 49 ST 50 ST 51 ST 52 ST 53 ST 54 ST 55 ST 56 ST 57 ST 58 ST 59 ST 60 ST 34a G O R N J A K R E D A G O R N J I K A M P A N - D O N J I M A S T R I H T O zn ak a uz or ak a ? Biomikrit Biomikrit Biomikrit Biomikrit Biomikrit ...

  • 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

  • Gate Road Support Deformation Forecasting Based on Multivariate Singular Spectrum Analysis and Fuzzy Time Series

    Luka Crnogorac, Rade Tokalić, Zoran Gligorić, Aleksandar Milutinović, Suzana Lutovac, Aleksandar Ganić (2021)
    Underground mining engineers and planners in our country are faced with extremely difficult working conditions and a continuous shortage of money. Production disruptions are frequent and can sometimes last more than a week. During this time, gate road support is additionally exposed to rock stress and the result is its progressive deformation and the loss of functionality of gate roads. In such an environment, it is necessary to develop a low-cost methodology to maintain a gate road support system. ...
    deformacije podgrade, lasersko skeniranje, višekanalna singularna spektralna analiza, prognoza, klasterisanje fuzzy vremenskih serija
    ... of the universe of displacement as l =min∆VM×N and u =max∆VM×N , respectively. The observed data are sorted in ascending order. The distance of any two consecutive values of displacement is calculated as follows: d = |∆vi+1 − ∆vi|, i = 1, 2, . . . , (M× N)− 1, (16) Now it is necessary to compute the ...
    ... → v (t− 1) + → u (t), t = 1, 2, . . . , N , (1) where → v (t)—the position vector of the marker m in the current support configuration. → v (t− 1)—the position vector of the marker m in the previous support configuration. → u (t)—the vector of displacement. N—time of monitoring. Figure 2. Change of ...
    ... 2]. In conventional matrix form, the data of position of all markers obtained by scanning for 1 ≤ t ≤ N can be expressed by the time-dependent position vectors as follows: → V(t) = [→ v ij ] M×N =  → v 11 → v 12 → v 13 · · · → v 1N → v 21 → v 22 → v 23 · · · → v 2N ... ... ... . . ...