Претрага
1028 items
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Testing the energy value of different types of coal by the method of active thermography
In this paper, coal thermograms are presented and analyzed in order to determine their energy value. Two types of coal of different categories, brown and lignite, were selected for active thermographic imaging. The tested coal samples were processed before measurement so that they are similar in dimensions and have two plane-parallel smooth surfaces. The test samples were "primarily" heated under the same conditions and the process of their cooling was monitored by a thermal camera. "Then" they were cooled ...Stevan Đenadić, Ljubiša Tomić, Vesna Damnjanović, Predrag Jovančić, Dragutin Jovković. "Testing the energy value of different types of coal by the method of active thermography" in 9th International Scientific Conference on Defensive Technologies, Belgrade, Serbia, 15-16 October 2020, The Military Technical Institute (2020)
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Mineralogical study of clays from Dobrodo, Serbia, for use in ceramics
Maja Milošević, Predrag Dabić, Sabina Kovač, Lazar Kaluđerović, Mihovil Logar. "Mineralogical study of clays from Dobrodo, Serbia, for use in ceramics" in Clay Minerals, Mineralogical Society (2019). https://doi.org/10.1180/clm.2019.49
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Ostvarivanje dobiti pri uvođenju sistema agregatnih zamena na osnovnoj rudarskoj mehanizaciji površinskih kopova EPS
Jedan od osnovnih zadataka na površinskim kopovima uglja je ostvarivanje zadovoljavajućeg vremenskog i kapacitetnog iskorišćenja kontinualnih sistema. Da bi se to postiglo, neophodno je izvršiti izmene u postojećoj strategiji održavanja. Preduslov je uvođenje agregatne zamene vitalnih delova na rudarskim mašinama. Benefiti su višestruki. Očekivani rezultati ovakvog pristupa su: smanjenje zastoja i povećanje vremena rada; direktne materijalne uštede; bolja organizacija rada; racionalizaciju radioničkih i magacinskih kapaciteta; povećanje vrednosti mašina. Da bi se uvela agregatna zamena neophodne su investicije za nabavku ...Predrag Jovančić, Ignjatović Dragan, Đenadić Stevan. "Ostvarivanje dobiti pri uvođenju sistema agregatnih zamena na osnovnoj rudarskoj mehanizaciji površinskih kopova EPS" in X Međunarodna konferencija UGALJ, Zlatibor, Srbija, 13-16. Oktobar 2021., Jugoslovenski komitet za površinsku eksploataciju (2021)
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Connections between the Levant and the Balkans in the late Middle Pleistocene: Archaeological findings from Velika and Mala Balanica Caves (Serbia)
Dušan Mihailović, Steven L. Kuhn, Katarina Bogićević, Vesna Dimitrijević, Ana B. Marín-Arroyo, Jelena Marković, Norbert Mercier, Bojana Mihailović, Mike W. Morley, Predrag Radović, William J. Rink, Senka Plavšić, Mirjana Roksandić (2022)Major changes in the technological, economic, and social behavior of Middle Pleistocene hominins occurred at the onset of the Middle Paleolithic, 400e200 ka. However, until recently it was not possible to establish when, where, and how certain forms of Middle Paleolithic behavior appeared and spread into Southeastern Europe, mainly owing to gaps in the Paleolithic record. Here we report new results of dating, material culture, and the archaeological context of finds from the Balanica Cave Complex in Sicevo (Serbia). ...Dušan Mihailović, Steven L. Kuhn, Katarina Bogićević, Vesna Dimitrijević, Ana B. Marín-Arroyo, Jelena Marković, Norbert Mercier, Bojana Mihailović, Mike W. Morley, Predrag Radović, William J. Rink, Senka Plavšić, Mirjana Roksandić . "Connections between the Levant and the Balkans in the late Middle Pleistocene: Archaeological findings from Velika and Mala Balanica Caves (Serbia)" in Journal of Human Evolution (2022)
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WebGIS Cadastre of Abandoned Mines in Autonomous Province of Vojvodina
Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2015)... Blagojević B., Prodanović J.: Gis Application In The Management And Administration Of Exploratory And Exploitation Permit. 3rd International Symposium Energy Mining 2010 Banja Junakovic, Apatin, Serbia, 08 - 11. September 2010., Edited by: Ivica Ristović, Milivoj Vulić. Faculty of Mining and Geology ...Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis. "WebGIS Cadastre of Abandoned Mines in Autonomous Province of Vojvodina" in Proceedings of the 5th International Symposium Mining And Environmental Protection,June 10-13,2015, Vrdnik, Serbia, Belgrade : Faculty of Mining and Geology (2015)
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Projection of SO2 emissions in coal power plants in Serbia
Aleksandar Madžarević, Predrag Jovančić, Stevan Đenadić, Filip Miletić, Miodrag Ristović, Miroslav Crnogorac (2023)The production of electricity in the countries of South-Eastern Europe (SEE) was mainly related to the use of coal, predominantly lignite. The total installed capacity of thermal power plants using coal in these seven countries is 17.813 MW, distributed in 31 thermoblocks. The mentioned plants are the dominant pollutant emitters in all observed countries. Data on the largest emitters in the countries of the European Union and a comparison with SEE countries were collected. The calculation of emissions of ...... 13:08:09 Projection of SO2 emissions in coal power plants in Serbia;Projekcija emisije SO2 u termoelektranama na ugalj u Srblji Aleksandar Madžarević, Predrag Jovančić, Stevan Đenadić, Filip Miletić, Miodrag Ristović, Miroslav Crnogorac Дигитални репозиторијум Рударско-геолошког факултета Универзитета ...
... РГФ] Projection of SO2 emissions in coal power plants in Serbia;Projekcija emisije SO2 u termoelektranama na ugalj u Srblji | Aleksandar Madžarević, Predrag Jovančić, Stevan Đenadić, Filip Miletić, Miodrag Ristović, Miroslav Crnogorac | 9th International Conference Mining and environmental protection, Sokobanja ...
... MINING AND ENVIRONMENTAL PROTECTION May 2023, Serbia PROJEKCIJA EMISIJE SO, U T FRMOELEKTRANAMA NA UGALJ U SRBLJI Aleksandar Madžarević!, Predrag Jovančić!, Stevan Đenadić', Fi ilip Miletić!, Miodrag Ristović”, Miroslav Crnogorac! ! Univerzitet u Beogradu – Rudarsko-geološki fakultet, Beograd ...Aleksandar Madžarević, Predrag Jovančić, Stevan Đenadić, Filip Miletić, Miodrag Ristović, Miroslav Crnogorac. "Projection of SO2 emissions in coal power plants in Serbia" in 9th International Conference Mining and environmental protection, Sokobanja 24-27th May 2023., Belgrade : University of Belgrade, Faculty of Mining and Geology (2023)
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Actual contamination of the Danube and Sava rivers at Belgrade (2013)
Milan Antonijević, Marija Arsović, Josef Cáslavský, Vesna Cvetković, Predrag Dabić, Mladen Franko, Gordana Ilić, Milena Ivanovic, Nevena Ivanović, Milica Kosovac, Dragana Medić, Slobodan Najdanović, Milica Nikolić, Jovana Novaković, Tatjana Radovanović, Djurdjina Ranić, Bojan Šajatović, Gorica Špijunović, Ivana Stankov, Jelena Tošović, Polonca Trebse, Olivera Vasiljević, Jan Schwarzbauer (2014)rečni sistemi, stanje zagađenja, organski zagađivači, teški metali, skrining analize, non-target screening... REFERENCES 1. R. A. Hites, J. Chromatogr. Sci. 11 (1973) 570 2. J. Rivera, F. Ventura, J. Caixach, M. De Torres, A. Figueras, J. Guardiola, Int. J. Environ. Anal. Chem. 29 (1987) 15 3. A. Puig, N. Cebrifin, J. Sarasa, M. C. Martinez, M. P. Ormad, M. S. Mutuberria, J. L. Ovelleiro, Water Res. 27 ...
... DANUBE 1183 7. M. Chem, L. Q. Ma, Soil. Sci. Soc. Am. J. 65 (2001) 491 8. C. Ianni, N. Ruggieri, P. Rivaro, R. Frache, Anal. Sci. 17 (2001) 1273 9. S. J. Hill, T. A. Arowolo, O. T. Butler, S. R. N. Chenery, J. M. Cook, M. S. Cresser, D. L. Miles, J. Anal. At. Spectrom. 17 (2002) 284 10. V. Sandroni ...
... 159 (2009) 99 22. L. Dsikowitzky, J. Schwarzbauer, R. Littke, Org. Geochem. 33 (2002) 1747 23. W. Stumm, J. J. Morgan, Aquatic chemistry: an introduction emphasizing chemical equilibria in natural waters, 2nd ed., Wiley, New York, 1981, p. 780 24. L. Dsikowitzky, J. Schwarzbauer, A. Kronimus, R. Littke ...Milan Antonijević, Marija Arsović, Josef Cáslavský, Vesna Cvetković, Predrag Dabić, Mladen Franko, Gordana Ilić, Milena Ivanovic, Nevena Ivanović, Milica Kosovac, Dragana Medić, Slobodan Najdanović, Milica Nikolić, Jovana Novaković, Tatjana Radovanović, Djurdjina Ranić, Bojan Šajatović, Gorica Špijunović, Ivana Stankov, Jelena Tošović, Polonca Trebse, Olivera Vasiljević, Jan Schwarzbauer. "Actual contamination of the Danube and Sava rivers at Belgrade (2013)" in Journal of the Serbian Chemical Society, National Library of Serbia (2014). https://doi.org/10.2298/JSC131105014A
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Sorpcija herbicida na neorganski i organski modifikovanom prirodnom montmorionitu iz Bogovine
Lazar M. Kaluđerović (2018-01-17)fikasnost prilikom sorpcije S-metolahlora i klomazona od strane neorganskih iorganski modifikovanih montmorionita sa lokaliteta Bogovina odreĎena je metodombach adsorpcije. Uzorci montmorionita su tretirani prvo rastvorom NaCl a zatim irazličitim koncentracijama organskih kompleksa. Adsorpcione izoterme su dobijenetretiranjem uzoraka različitim koncentracijama herbicida. Detaljna mineraloškakarakterizacija uzoraka uraĎena je metodom rendgenske difrakcije. Rezultati interakcijemontmorionita sa organskim kompleksima i herbicidima dobijeni su primenomrendgenskih, optičkih, termičkih i spektroskopskih metoda.Na osnovu rezultata rendgenskih ispitivanja uzoraka, utvrĎeno je prisustvoorganskih kompleksa i herbicida u meĎuslojnom prostoru montmorionita.Montmorioniti modifikovani ...adsorpcija, montmorionit, heksadeciltrimetilamonijum bromid,feniltrimetilamonijum hlorid, S-metolahlor, klomazon... Institut za pesticide i zaštitu ţivotne sredine; uţa naučna oblast: Biotehnologija i poljoprivreda - zaštita bilja - fitofarmacija. dr Predrag Vulić, docent, Univerzitet u Beogradu – Rudarsko-geološki fakultet; uţa naučna oblast: Fundementalna i primenjena mineralogija dr Aleksandar ĐorĎević ...
... D., Zhu J. X., Yuan P., Yang S. J., Chen T. H., He H. P. 2008. Preparation and characterization of anion-cation surfactants modified montmorillonite. Journal of Thermal Analysis and Calorimetry, 94: 841–848. Chesters G., Simsiman G. V., Levy J., Alhajjar B. J., Fathulla R. N., Harkin J. M. 1989 ...
... Physical Chemistry C, 111: 7487–7493. Zhu J., He H., Guo J., Yang D., Xie X. 2003. Arrangement models of alkylammonium cations in the interlayer of HDTMA+ pillared montmorillonites. Chinese Science Bulletin, 48(4): 368–372. Zhu D., Hyun S., Pignatello J. J., Lee L. S., 2004. Evidence for π–π electron ...Lazar M. Kaluđerović. "Sorpcija herbicida na neorganski i organski modifikovanom prirodnom montmorionitu iz Bogovine" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2018-01-17)
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Еоценска фауна југозападног дела Сирт басена (Либија)
Љупко Рундић, Мери Ганић (2020)Љупко Рундић, Мери Ганић. "Еоценска фауна југозападног дела Сирт басена (Либија)" in Записници Српског геолошког друштва, Српско геолошко друштво (2020)
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Polyhedral characteristics of the cosalite-type crystal structures
Sabina Kovač, Predrag Dabić, Aleksandar Kremenović, Aleksandar Pačevski, Ljiljana Karanović, Marko V. Rodić, Martina Tribus (2019)Sabina Kovač, Predrag Dabić, Aleksandar Kremenović, Aleksandar Pačevski, Ljiljana Karanović, Marko V. Rodić, Martina Tribus. "Polyhedral characteristics of the cosalite-type crystal structures" in The Canadian Mineralogist, Mineralogical Association of Canada (2019). https://doi.org/10.3749/canmin.1900017
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Sinteza i strukturna karakterizacija mikroporoznih arsenata i fosfata
Sabina Z. Kovač (2015-09-28)Predmet rada i istraživanja ove doktorske disertacije su sinteza i strukturnekarakteristike novih kristalnih arsenata i fosfata koji sadrže Mg, K, Ca, Mn, Fe, Co, Ni,Cu, Zn, Sr, Ba i druge katjone. U strukturama arsenata i fosfata, AsO4- i PO4-tetraedrinajčešće se vezuju sa tetraedarski ili oktaedarski koordinisanim katjonima prelaznihmetala formirajući otvorene strukture (slojeve ili 3D mreže) sa širokim opsegomrazličitih topologija. U šupljinama ili porama u obliku povezanih ili nepovezanihkanala, tunela, kaveza i međuslojnog prostora mogu se ugraditi različiti vanmrežni joni(obično ...... kristalografija Rudarsko-geološki fakultet, Univerzitet u Beogradu Članovi komisije: _________________________________________ dr Predrag Vulić, naučni saradnik uža naučna oblast - kristalografija Rudarsko-geološki fakultet, Univerzitet u Beogradu ___________________________ ...
... O’Brien, M. G., Slawin, A. M. Z., Warren, J. E., Prior, T. J., Morris, R. E. (2010) J. Solid State Chem. 183, 1625–1631. 166. You, T., Xu, J., Zhao, Y., Yue, Y., Xu, Y., Xu, R., Hu, N., Wei, G., Jia, H. (1994) Chem. Commun., 1171. 167. Yu, J., Xu, R., Li, J. (2000) Solid State Sci. 2, 181–192. ...
... (1999) Acta Crystallogr. C55, 156–157. 62. Gao, Q., Chen, J., Li, S., Xu, R., Thomas, J. M., Light, M., Hursthouse, M. B. (1996) J. Solid State Chem. 127, 145–150. 63. Gao, Q., Chippindale, A. M., Cowley, A. R., Chen, J., Xu, R. (1997) J. Phys. Chem. B101, 9940–9942. 64. Gatehouse, B. M. and ...Sabina Z. Kovač. "Sinteza i strukturna karakterizacija mikroporoznih arsenata i fosfata" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-09-28)
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The optimization of auxiliary machinery in open-cast lignite mines: a case study of bulldozers
One of the most important prerequisites for the successful operation of the open-cast lignite mine is to carry out all the auxiliary works timely with the necessary quality. The most important and most commonly used auxiliary machines are bulldozers. Engaging time of bulldozers use is in direct relation with the coefficients of the time and capacity utilization of the continuous system for the excavation of coal and tailings, which indicates their importance. More than 100 bulldozers have been hired ...... Ignjatović, Predrag Jovančić, Stevan Đenadić, Ivan Janković, Ivica Ristović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] The optimization of auxiliary machinery in open-cast lignite mines: a case study of bulldozers | Dragan Ignjatović, Predrag Jovančić, Stevan ...
... September 2019, Vrdnik, Serbia THE OPTIMIZATION OF AUXILIARY MACHINERY IN OPEN-CAST LIGNITE MINES: A CASE STUDY OF BULLDOZERS Dragan Ignjatović!, Predrag Jovančić!, Stevan Đenadić!, Ivan Janković?, Ivica Ristović! !- University ог Belgrade – Faculty ог Mining and Geology, Belgrade, SERBIA, dragan ...
... 80. This diagram is shown in Figure 8 [1]. 12 3 1 0,97 0.955 __0.915 0.9I% ___9;905\\ 05 7 —= . 2 | T ф \ 0.722 e 5 0.6 – | : | 0.602 –ј | 5ћапећа! РОЗ20У-1 04 _ | | d О 0.316 | 0.2 - | | | | Џ Џ 0 T T T T T Ц T T T 1.year 2. уеаг 3. уеаг 4. уеаг 5. уеаг 6. уеаг5 7. ...Dragan Ignjatović, Predrag Jovančić, Stevan Đenadić, Ivan Janković, Ivica Ristović. "The optimization of auxiliary machinery in open-cast lignite mines: a case study of bulldozers" in 7th International Symposium Mining and Environmental Protection, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia (2019)
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The number of unimodular roots of some reciprocal polynomials
Dragan Stankov (2020)We introduce a sequence P2n of monic reciprocal polynomials with integer coefficients having the central coefficients fixed. We prove that the ratio between number of nonunimodular roots of P2n and its degree d has a limit when d tends to infinity. We present an algorithm for calculation the limit and a numerical method for its approximation. If P2n is the sum of a fixed number of monomials we determine the central coefficients such that the ratio has the minimal limit. ...Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomialsDragan Stankov. "The number of unimodular roots of some reciprocal polynomials" in Cmptes rendus mathematique (2020). https://doi.org/10.5802/crmath.28
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Priprema ruda antimona
Lazić Predrag (2014)Lazić Predrag. "Priprema ruda antimona" in Srpsko rudarstvo i geologija u drugoj polovini XX veka, Beograd:Akademija inženjerskih nauka Srbije, Matica srpska, Rudarski institut (2014): 465-468
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Priprema ruda olova i cinka
Lazić Predrag (2014)Lazić Predrag. "Priprema ruda olova i cinka" in Srpsko rudarstvo i geologija u drugoj polovini XX veka, Beograd:Akademija inženjerskih nauka Srbije, Matica srpska, Rudarski institut (2014): 479-495
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Postrojenja za pripremu ruda metala i uglja
Lazić Predrag (2014)Lazić Predrag. "Postrojenja za pripremu ruda metala i uglja" in Srpsko rudarstvo i geologija u drugoj polovini XX veka, Beograd:Akademija inženjerskih nauka Srbije, Matica srpska, Rudarski institut (2014): 527-534
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[Без наслова]
Lazić Predrag (2012)Lazić Predrag. "[Без наслова]" in zbornik radova VIII Kolokvijuma o pripremi mineralnih sirovina, Beograd: (2012)
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Opravdanost i domen primene zasipavanja otkopanog prostora pri podzemnoj eksploataciji ležišta uglja
Predrag Dimovski (1992)Predrag Dimovski. Opravdanost i domen primene zasipavanja otkopanog prostora pri podzemnoj eksploataciji ležišta uglja, Beograd:Rudarsko-geološki fakultet, 1992
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Ispitivanje uslova rada čekićne drobilice na efekte drobljenja i habanje drobećih površina pri usitnjavanju krečnjaka
Predrag Lalić (1991)Predrag Lalić. Ispitivanje uslova rada čekićne drobilice na efekte drobljenja i habanje drobećih površina pri usitnjavanju krečnjaka, Beograd:Rudarsko-geološki fakultet, 1991
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Utvrđivanje korelacije između fizičko-mehaničkih svojstava mermera i efekta drobljenja
Predrag Lazić (1994)Predrag Lazić. Utvrđivanje korelacije između fizičko-mehaničkih svojstava mermera i efekta drobljenja, Beograd:Rudarsko-geološki fakultet, 1994