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Упит dcterms_creator_txt:Miodrag K. Pavićević

754 items

  • Heavy metals in lignite and soil of Kostolac-Kovin coal basin, eastern Serbia - comparative analysis with selected cities in Serbia, region, Europe and world

    Bogoljub Vučković, Bojan Dimitrijević (2023)
    The Kostolac-Kovin coal basin with an area of 320 km2, with 5 separate layers of coal and with a total of about 5.7 Bt of geological resources and reserves represents an exceptional potential for coal production in Serbia. The coal resources listed in this way are not fully exploitable, but they represent potential for consideration. In this paper, we deal with the geochemical characteristics of coal seams and perform a comparative analysis of coal affectation on the environment. With ...
    lignite, heavy metals, concentrations
    ... 40 ppm Kovin 2 Open Pit Drmno under running II Coal Layer Pb avg. = 20 ppm , III Coal Layer Pb avg. = 12.5 ppm a _— — _ m ——— R K a ___ _— ___— K r — — — _— ——— E e= | CoalLayer | e= MM CoalLayer | el MM CoalLayer || Cu avg. = 60 ppm m Cu avg. = 45 ppm m —. Cu avg. = 40 ppm m eosod| ...
    ... doi: 10.1016/j.catena.2012.06.007. 7. Cheng Y., Paltseva A., Li 1., Morin T., Huot H., Egendorf S., Su Z., Yolanda R., Singh K., Lee L., Grinstein M., Liu Y., Green K., Wai W., Wazed B., Shaw R., 2015 – Trace Metal Contamination in New Vork City Garden Soil - Soil Sci 180, Technical article 8 ...
    ... (Ia, I and II layers at the future surface mine West Kostolac 1; and at the future surface mine Kovin 1) -3 -5i ı % aMewwyram Š WaQra . Mpwayrab k rac 3 e mrmwr g P4buHepuja naQre -| 4964000 | -| F 4962000 -| 4960000 | 4958000 4956000 -| 4954000 -| 4952000 -| 4950000 -| 4948000 ...

  • Cultural Heritage and Protection of Hand-Wheeled Pottery Manufacture in Western Serbia: Characteristics of Zlakusa Pottery Based on Sem-Eds and Optical Microscopy

    Milošević Maja, Zdravković Alena, Đordjević Biljana, Jelić Ivana (2021)
    ... differences in the chemistry of the samples. Sample 1 has a higher content of most investigated elements when compared to sample 2, except K and Ca. Amount of K and Ca elements could indicate the presence of a higher amount of illite minerals and carbonates in the clay mixture which is not following ...

  • Утицај обртног магнетног поља на дерацемизацију кристала натријум-хлората

    М. Милојевић, А. Жекић, П. Дабић, Б. Вучетић, Б. Максимовић (2023)
    ... 2151—2155. [3] C. Xiouras, J. V. Aeken, J. Panis, J. H. T. Horst, T. V. Gerven, G. D. Stefanidis, Crysf. Growth Des., 15 (2015) 5476–5484. [4] K. Suwannasang, A. E. Flood, C. Rougeot, G. Coquerel, Cryst. Growth Des., 13 (2013) 3498—3504. [5] M. M. Milojević, B. M. Vučetić, B. Z. Maksimović, ...
    ... 2151—2155. [3] C. Xiouras, J. V. Aeken, J. Panis, J. H. T. Horst, T. V. Gerven, G. D. Stefanidis, Crysf. Growth Des., 15 (2015) 5476–5484. [4] K. Suwannasang, A. E. Flood, C. Rougeot, G. Coquerel, Cryst. Growth Des., 13 (2013) 3498—3504. [5] M. M. Milojević, B. M. Vučetić, B. Z. Maksimović, ...

  • Skarn mineralizations in the Bor ore district: new evidence from study of bornite-chalcopyrite-hematite paragenesis

    Pačevski Aleksandar, Šarić Kristina, Banješević Miodrag, Tončić Trajče, Cvetković Vladica (2012)

  • Realizacija izdavanja zajedničkih diploma Univerziteta u Beogradu: softverski, logistički i pravni problemi

    Mitrović Irena, Blagojević Ognjen, Protić Jelica, Popović Miodrag, Obradović Ivan (2011)

  • Improvement of Roadways Stability in Serbian Underground Coal Mines

    Milisavljević Vladimir, Ristović Ivica, Čokorilo Vojin, Lilić Nikola, Miodrag Denić (2011)

  • Solid state synthesis of extra phase-pure Li4Ti5O12 spinel

    Ivana Veljković, Dejan Poleti, Ljiljana Karanović, Miodrag Zdujić, Goran Branković (2011)
    Фазно чист спинел Li4Ti5O12 са величином честица мањом од 500 nm добијен је реакцијом у чврстом стању из стехиометријске смеше наноанатаса (ТiО2) и Li2CO3 која је претходно активирана механохемијским поступком. Реакција у чврстом стању у потпуности се завршава за само 4 часа на температури од 800 ºC. Уз помоћ XRPD, SEM и TG/DSC анализе испитане су структурне и микроструктурне карактеристике добијеног спинела, механизам реакције између анатаса и Li2CO3, као и термичка стабилност Li4Ti5O12. Реакција започиње разлагањем Li2CO3 на температурама ...
    дифракција рендгенских зрака, механизам реакције, термичка стабилност, Li4Ti5O12, спинел, фазно чист узорак

  • Experimental determination of best performing cut in Lece underground mine

    Slavko Torbica, Miodrag Duranović, Nenad Gramić, Veljko Lapčević, Miloš Čolović (2020)
    blasting, explosives, underground mining

  • Sensitivity analysis of rock mass parameters estimate influence on decline support design using NATM

    Slavko Torbica, Veljko Lapčević, Wang Gang, Nemanja Đokić, Miodrag Duranović (2019)
    Rock mass, Tunneling, NATM, GSI, Stress, Cukaru Peki, Bor

  • Threshold-induced correlations in the Random Field Ising Model

    Sanja Janićević, Dragutin Jovković, Lasse Laurson, Đorđe Spasojević (2018)
    Multidisciplinary
    ... 11. Dahmen, K. A. & Sethna, J. P. Hysteresis Loop Critical Exponents in 6 − ε Dimensions. Phys. Rev. Lett. 71 (1993). 12. Dahmen, K. A. & Sethna, J. P. Hysteresis, avalanches, and disorder-induced critical scaling: A renormalization-group approach. Phys. Rev. B 53 (1996). 13. Dahmen, K. A. & Sethna ...
    ... 11. Dahmen, K. A. & Sethna, J. P. Hysteresis Loop Critical Exponents in 6 — ¢ Dimensions. Phys. Rev. Lett. 71 (1993). 12. Dahmen, K. A. & Sethna, J. P. Hysteresis, avalanches, and disorder-induced critical scaling: A renormalization-group approach. Phys. Rev. B 53 (1996). 13. Dahmen, K. A. & Sethna ...
    ... Belanger, D. P. & Nattermann, T. In Spin Glasses and Random Fields, edited by Young, A. P. (World Scienti�c, Singapore, 1998). 3. Sethna, J. P., Dahmen, K. A. & Perković, O. In �e Science of Hysteresis, edited by Bertotti, G. & Mayergoyz, I. (Academic Press, Amsterdam, 2006). 4. Durin, G. & Zapperi, S ...

  • Novi model za postizanje optimalne proizvodnje na naftnom polju Amal

    Elnori Elmabrouk Ali Elhaddad (2015-04-16)
    Doktorskom disertacijom analizirani su i proučavani problemi proizvodnje nafte iprimenjene metode za njihovo rešavanje na naftnom polju Amal. Ukratko jeprikazana proizvodnje nafte u Libiji, njene karakteristike i rezerve, da bi se videoznačaj ovog naftnog polja.Utvrđeno je da su na naftnom polju Amal ključni problemi koji prate procesproizvodnje taloženje parafina, pojava slojnog peska, neefikasan rad gasliftsistema, neefikasna desalinizacija nafte i ekološki problemi. Proizvodniproblemi, pojedinačno i više njih zajedno, na nekim bušotinama uzrokovali susmanjenje proizvodnje nafte od 40 do 75%. Zbog ...
    nafta, proizvodnja, optimizacija, Amal, Libija
    ... Rashid K., (2008). “A method for gas lift optimization,” in Proceedings of the SIAM Annual Meeting, Boston, Mass, USA. Rashid K., (2010). “Optimal allocation procedure for gas-lift optimization,” Industrial and Engineering Chemistry Research, vol. 49, no. 5, pp. 2286– 2294. Rashid K. Bailey ...
    ... 400 500 600 Proizvodnja, m 3 /dan P ri ti s a k , b a r 71 Slika 6.4. IPR kriva za bušotinu X2 Slika 6.5. IPR kriva za bušotinu X3 0 20 40 60 80 100 120 140 160 180 0 100 200 Proizvodnja, m 3 /dan P ri ti s a k , b a r 0 20 40 60 80 100 120 140 160 180 ...
    ... application of reservoir electrical heating methods, Porlamar, Margarita Island, Venezuela, March 12–14, pp. 1-17. Singhal H. K., Sahai G. C, Pundeer G. S., Chandra K. (1991) Designing and Selecting Wax Crystal Modifier for optimum Field Performance Based on Crude Oil Composition, SPE 22784, ...

  • Novi model za postizanje optimalne proizvodnje na naftnom polju Amal

    Elnori Elmabrouk Ali Elhaddad (2015-04-16)
    Doktorskom disertacijom analizirani su i proučavani problemi proizvodnje nafte iprimenjene metode za njihovo rešavanje na naftnom polju Amal. Ukratko jeprikazana proizvodnje nafte u Libiji, njene karakteristike i rezerve, da bi se videoznačaj ovog naftnog polja.Utvrđeno je da su na naftnom polju Amal ključni problemi koji prate procesproizvodnje taloženje parafina, pojava slojnog peska, neefikasan rad gasliftsistema, neefikasna desalinizacija nafte i ekološki problemi. Proizvodniproblemi, pojedinačno i više njih zajedno, na nekim bušotinama uzrokovali susmanjenje proizvodnje nafte od 40 do 75%. Zbog ...
    nafta, proizvodnja, optimizacija, Amal, Libija
    ... Rashid K., (2008). “A method for gas lift optimization,” in Proceedings of the SIAM Annual Meeting, Boston, Mass, USA. Rashid K., (2010). “Optimal allocation procedure for gas-lift optimization,” Industrial and Engineering Chemistry Research, vol. 49, no. 5, pp. 2286– 2294. Rashid K. Bailey ...
    ... 400 500 600 Proizvodnja, m 3 /dan P ri ti s a k , b a r 71 Slika 6.4. IPR kriva za bušotinu X2 Slika 6.5. IPR kriva za bušotinu X3 0 20 40 60 80 100 120 140 160 180 0 100 200 Proizvodnja, m 3 /dan P ri ti s a k , b a r 0 20 40 60 80 100 120 140 160 180 ...
    ... application of reservoir electrical heating methods, Porlamar, Margarita Island, Venezuela, March 12–14, pp. 1-17. Singhal H. K., Sahai G. C, Pundeer G. S., Chandra K. (1991) Designing and Selecting Wax Crystal Modifier for optimum Field Performance Based on Crude Oil Composition, SPE 22784, ...

  • Application of machine learning for diagnosing the operation of a deep well pump in oil production

    Maja Trikić (2024)
    This paper will thoroughly examine how machine learning can improve the diagnosis of deep well pumps by analyzing the role and function of the pumps, dynamograms, sensor technologies, and diagnostic methods.Our analysis will provide insights into modern techniques and approaches for enhancing the performance and reliability of oil production systems, targeting cost reduction and increased operational efficiency.
    deep well pump, dynamograms, machine learning, diagnostics of operating coditions,Random Forest, XGBoost
    ... a sequence of ordered pairs (x0, y0), (x1, y1), (x2, y2), ..., GN-1, yN-1), each ordered pair can be treated as a complex number: s(k) = x(k) + jy(k) O) where k=0,1,2,...,N-1, and N represents the number of points on the contour. In this approach, the x-axis is treated as the real axis, while ...
    ... work utilizes the Continuous Wavelet Transform, described by equation (13). _ k-b Cw(s,b) = .J z(k)QC2-)dk (13) where: Cw(5, b)- is the result of the wavelet transform, Z(k)- is the signal being analyzed, iW)((k — b)/s)- is the wavelet function, s and b-scale and translation 54 The main ...
    ... discrete Fourier transform (DET), it is possible to compute the Fourier descriptors of the contour using equation (11). a(k) = y1 z(k)e y- (11) je n = 0,1,2.....N - 1 and a(k) are the Fourier coefficients of the contour. To make the descriptors invariant to rotation, the magnitude |a(R)|is used ...

  • Damage quantification of built stone on Dark Gate (Belgrade, Serbia): sample of damage index application for decay rate evaluation

    Maja Franković, Nevenka Novaković, Vesna Matović (2015)
    The Dark Gate is the monument of culture, part of the cultural and historical complex of the Belgrade Fortress. It is constructed of limestone blocks that after 270 years of exposure to environmental conditions and different anthropogenic influences show wide ranges of decay forms. During 2007, detail registration of all built limestone microfacies and weathering forms was done using tools of monument mapping. A correlation scheme ‘‘intensity– damage category’’ was made according to the type, intensity, and distribution of ...
    Krečnjak, mapiranje, Indeks raspadanja, brzina raspadanja, progresija
    ... Heinrichs K (1994) Damage diagnosis at monuments carved from bedrocks in Petra, Jordan. In: Fassina V, Ott H, Zezza F (eds) La conservazione dei monumenti nel bacino del Mediterraneo. Soprintendenza ai beni artistici e storici di Venezia, Venice, pp 663671 Fitzner B, Heinrichs K (2002) Damage ...
    ... Heinrichs K, Kownatzki R (1992) Classification and mapping of weathering forms. In: Siegesmund S, Weiss ThN, Volibrecht A (eds) 7th International congress on deterioration and conservation of stone. Laborat6rio nacional de engenharia civil, Lisbon, pp 957–968 Fitzner B, Heinrichs K, Kownatzki ...
    ... Forderprojekt des Bundesministeriums fir Bildung, Wissenschaft, Forschung und Technologie, Verlag Ernst & Sohn, Berlin, pp 41-88 Fitzner B, Heinrichs K, Volker M (1997a) Model for salt weathering at Maltese Globigerina limestones. In: Zezza F (ed) Proceedings of the E.C. research workshop *Origin ...

  • Granatski amfiboliti Bistrice

    Jovana Opančina (2024)
    Predmet ispitivanja ovog završnog rada su granatski amfiboliti Bistrice. Izvršena su petrografska i hemijska ispitivanja s ciljem da se odredi stepen metamorfizma, protolit ispitivanih stena i P-T uslovi nastanka. Ispitivani granatski amfiboliti geografski pripadaju Prijepolju, tačnije nalaze se na ulasku u Prijepolje, mesto Bistrica. Geološka građa obuhvata uglavnom mezozojske tvorevine među kojima se nalaze sedimentne, magmatske i metamorfne stene. Geološki procesi koji su doveli do stvaranja amfibolita su procesi subdukcije i obdukcije koji su se pretpostavljamo dešavali na većim ...
    granatski amfiboliti, Bistrica, elektronska mikrosonda, polarizacioni mikroskop

  • Značaj geografske širine za lociranje uzročnika magnetnih anomalija kod prospekcije arheoloških lokaliteta

    Vesna Cvetkov (2020)
    ... omogućava sagleda- vanje arheoloških nalazišta iz više as- pekata i samim tim tačnije definisanje potencijalnih zona od interesa za arheo- 15 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 ...
    ... stica, od erodovanih stena ili biogenog porekla, dovoljno malih dimenzija da se ponašaju kao mali magneti i orijentišu paralelno sa MPZ. 17 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 ...
    ... maksimum anomalije Slika 1. Oblik magnetne anomalije iznad gorelih arheoloških objekata od opeke pri različi- tim vrednostima inklinacije 19 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 ...

  • Optimization and Analysis of Drilling and Blasting Parameters Using O-Pitblast Software

    Stefan Milanović, Nikola Simić, Lazar Kričak, Milanka Negovanović, Nikola Đokić (2024)
    The development of modern technologies has enabled the application of specialized softwares in the field of mining through various segments and processes, including in works related to drilling and blasting. The application of specialized software for drilling and blasting with the use of modern technologies such as photogrammetry enabled more accurate data from the field for later processing. By processing data and creating a 3D model of the terrain for drilling and blasting works, it can obtain precise data, ...
    optimizacija, 3D model, bušenje, miniranje, O-Pitblast, softver

  • Influence of DEM resolution on numerical modelling of debris flows in RAMMS - Selanac case study

    Jelka Krušić, Biljana Abolmasov, Mileva Samardžić Petrović (2019)
    Debris flows induced by intensive rainfall represent very hazardous phenomena in many parts of the World. Methods for prediction of runout distance of flow like mass movements are different and depending on the input data, rheology, and available or appropriate numerical solution. However, sometimes it is not easy to obtain pre event and post event high-resolution data in the rural or mountainous area. Thus, the topology of terrain is the most important input parameter for the every real case ...
    tecišta, modeliranje, RAMMS, DEM
    ... w hazards and related phenomena. Blondel, P. Springer Praxis Book in Geophysical Sciences, Chichester, UK .1723 p. Krušić, J., Andrejev, K.,Andrejev, K., Abolmasov, B, Marjanović, M.(2017) Preliminary results of the Selanac debris flow modelling in RAMS - a case study., Proceeding of the 3rd ...
    ... relationships for debris flows. Natural Hazards 19: 47-77. Savage SB, Hutter K (1989) The motion of a finite mass of granular material down a rough incline. Journal of Fluid Mechanics 199 (1): 177-215. Schraml K, Thomschitz B, Mcardell BW, Graf C, Kaitna R (2015) Modeling debris-flow runout ...

  • Geotechnical Conditions for Construction of Savski Trg Metro Station as a Part of the Belgrade Metro Line One

    Nemanja Stanic, Dragoslav Rakic, Josip Isek, Slavoljub Simic (2024)
    In order to solve serious traffic congestion in Belgrade, a number of studies regarding the Belgrade Metro construction have been carried out since 1973. However, only in 2019, the routes of the future metro lines 1 and 2 were de-fined as a part of the General Metro Construction Project. The lines are de-signed to intersect at the location of Sava Square, where an interchange met-ro station will be built. It represents a complex geotechnical structure consist-ing of three different ...
    metro station, geotechnical modelling, displacements

  • Vibration as deciding parameter during revitalization process for replacing the bucket wheel drive

    Bošković Saša, Jovančić Predrag, Ignjatović Dragan, Rakićević Branislav, Maneski Taško (2015)