Претрага
900 items
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Economic And Technical Aspects Of Transformer Operation
Aleksandrović Snežana, Jović Mihajlo (2016)Aleksandrović Snežana, Jović Mihajlo. "Economic And Technical Aspects Of Transformer Operation" in Energy Sources, Part B: Economics, Planning and Policy 11 no. 1, United Kingdom:Taylor & Francis (2016): 26-31. https://doi.org/10.1080/15567249.2011.567225
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Squamate remains from the Early and Middle Pleistocene Srem series in the Mutalj Quarry (Beočin, Northern Serbia)
Đurić Dragana, Bogićević Katarina, Nenadić Draženko. Squamate remains from the Early and Middle Pleistocene Srem series in the Mutalj Quarry (Beočin, Northern Serbia) no. 1, Struga:, 2016: 351-357
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Flood protection and water utilization of karst poljes: example of Gatačko Polje, Eastern Herzegovina
Tina Dašić, Ljiljana Vasić (2020)Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry,Global and Planetary ChangeTina Dašić, Ljiljana Vasić. "Flood protection and water utilization of karst poljes: example of Gatačko Polje, Eastern Herzegovina" in Environmental Earth Sciences, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s12665-020-08987-4
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Geothermobarometric investigations of Hercynian granitoids of East Serbia
Bosić Dragana, Erić Suzana, Šarić Kristina, Kostić Bojan, Cvetković Vladica, Jovanović Dragan (2016)Bosić Dragana, Erić Suzana, Šarić Kristina, Kostić Bojan, Cvetković Vladica, Jovanović Dragan. "Geothermobarometric investigations of Hercynian granitoids of East Serbia" in Geologica Macedonica, sp. iss. Third Congress of Geologists of Republic of Macedonia 2 no. 4 (2016): 467-468. https://doi.org/http://www.libraweb.net/artico
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An oilfield in Libya: A new model to enhance waste water disposal
Dušan Danilović, Vesna Karović Maričić, Nori Elhaddad, Branko Leković. "An oilfield in Libya: A new model to enhance waste water disposal" in Energy & Environment (2016)
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Flyrock induced by blasting in surface mining
Milanka Negovanović, Lazar Kričak, Snežana Ignjatović, Stefan Milanović, Jovan Marković, Nikola Simić, Rade Šarac (2022)Miniranje predstavlja i dalje najefikasniji i najjeftiniji način eksploatacije velikih količina čvrstih mineralnih sirovina na površinskim kopovima. Energija eksplozije se koristi za fragmentaciju čvrste stenske mase do zahtevane granulacije. Pored pozitivnih efekata miniranja, postoje i određeni neželjeni efekti svakog procesa miniranja koji se mogu javiti, a to su: potresi tla, razletanje komada stene, vazdušni udari, otrovni i zagušljivi gasovi i prašina. Razletanje komada stene je nekontrolisano izbacivanje fragmenata odminirane stenske mase i predstavlja jedan od glavnih izvora materijalne štete ...Milanka Negovanović, Lazar Kričak, Snežana Ignjatović, Stefan Milanović, Jovan Marković, Nikola Simić, Rade Šarac. "Flyrock induced by blasting in surface mining" in Rudarski glasnik, Beograd : Rudarski institut (2022). https://doi.org/10.25075/BM.2022.05
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Cultural Heritage and Protection of Hand-Wheeled Pottery Manufacture in Western Serbia: Characteristics of Zlakusa Pottery Based on Sem-Eds and Optical Microscopy
... MANUFACTURE IN WESTERN SERBIA: CHARACTERISTICS OF ZLAKUSA POTTERY BASED ON SEM-EDS AND OPTICAL MICROSCOPY MILOŠEVIĆ, M.1, ZDRAVKOVIĆ, A.1, ĐORĐEVIĆ, B.2 & JELIĆ, I.3 1Faculty of Mining and Geology, University of Belgrade, Belgrade, Serbia 2National Museum in Belgrade, Belgrade, Serbia 3Natural History ...
... The present study was supported by the Ministry of Education and Science, Republic of Serbia, Project no. 176010. References DJORDJEVIĆ, B. (2013): In: Lugli, F., Stoppiello, A. A. & Biagetti, S. (Eds.): Ethnoarchaeology: Current research and field methods. Conference Proceedings, Rome ...Milošević Maja, Zdravković Alena, Đordjević Biljana, Jelić Ivana. "Cultural Heritage and Protection of Hand-Wheeled Pottery Manufacture in Western Serbia: Characteristics of Zlakusa Pottery Based on Sem-Eds and Optical Microscopy" in 8th Mineral Sciences in the Carpathians Conference, Acta Mineralogica-Petrographica, Miskolc, Hungary, Department of Mineralogy, Geochemistry and Petrology, University of Szeged, Szeged, Hungary (2021)
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Small Mammals from the Velika and Mala Balanica caves (Niš, southern Serbia)
Bogićević Katarina, Nenadić Draženko, Mihailović Dušan. Small Mammals from the Velika and Mala Balanica caves (Niš, southern Serbia) no. 1, Struga:, 2016: 357-360
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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... NH4+ koji zauzimaju poloţaj izmenljivog katjona: H+— glina + B = BH+— glina NH4 +— glina + B = BH+— glina + NH3 2) Voda koja je vezana za izmenljive metalne katjone: [M(H2O)x] n+ + B = [MOH(H2O)x-1] (n-1)+ + BH+ ...
... Lj., Nikolić V. M., Milić A. D., Gajić A. M., Djuričić A. M., Branković T. B., Martinović R. P., Tomašević R. M., Dumić B. M., Ţivanović D. V., Skendţić M. Đ., Opačić D. M., Andrić D. Lj., Krstović S. P., Matejević A. B., Domaće nemetalične mineralne Sirovine za primenu u privredi. Poglavlje u ...
... 31: 262–271. He H., Zhou Q., Frost R. L., Wood B. J., Duong L. V., Kloprogge J. T. 2007. A X-ray photoelectron spectroscopy study of HDTMAB distribution within organoclays. Spectrochimica Acta Part A, 66: 1180–1188. Hedley C. B., Yuan G. and Theng B. K. G. 2007. Thermal analysis of montmorillonites ...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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Soil oscillation law parameter determination with the application of Lagrange’s theorem at “Kovilovača“ open pit
... parameter n, the La- grange’s theorem will be used, which states: Let f(x) be a function continuous to [a,b] and differentiable on an interval (a, b). Then there is at least one c, a < c < b, for which it is: cf ab afbf . In this case, given that the velocity is continuous, decreasing and ...
... određivanje parametra n koristi- ćemo Lagranžovu teoremu koja glasi: Neka je funkcija f(x) neprekidna na [a,b] i diferencijabilna u intervalu (a, b). Tada postoji bar jedno c, a < c < b, za koje je: cf ab afbf . U našem slučaju, s obzirom da je brzina oscilovanja neprekidna, opadajuća i ...
... Belgrade, pp. 199. [3] Simeunović D,.(1985): Mathematics, Faculty of Mining and Geology – Mining Department, Belgrade pp. 102- 103. [4] Ivanović B., (1973): Theoretical Statistics, Naučna knjiga, Belgrade, pp. 90 (in Serbian). [5] Simonović V., (1995): Introduction to the Theory of Probability ...Suzana Lutovac, Nebojša Vidanović, Čedomir Beljić, Zoran Gligorić. "Soil oscillation law parameter determination with the application of Lagrange’s theorem at “Kovilovača“ open pit" in Mining and Metallurgy Engineering Bor, Bor : Mining and Metallurgy Institute Bor (2015). https://doi.org/10.5937/MMEB1503053L
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Анализа рада гас лифта на нафтном пољу К
Тамара Бркан (2024)Анализа рада гас лифта укључује детаљну процену перформанси, идентификацију проблема, симулацију и моделирање, као и опримизацију и прилагођавање система. Циљ је осигурати да гас лифт функционише ефикасно уз повећање производње и уз што мање оперативне трошкове. У даљем тексту биће описана анализа рада гас лифта на нафтном пољу К, као и поређење најекономичнијег решења.... MepeHH nuHHaMHuku ripHTucak, [bar]; m3 Qomax— MaKCHMAaJIHa IpOH3BOJU4, [E] 21 LA 500 Hwt 1000 B 1500 Cauka 7.3 – Ynoc SFnin u SFnax u npenasaux 0y6una 7.2 JlyOuHa yrpajume rac nu(b BeHTuJIa 1) /lyOuHa yrpajupe HpBor BeHTHII4, KaO IITO je IipHKa3aHo Ha cHH 7.4. VkoJmiKo je crarHuKH ...
... u oaca epynmueHo Memo0o, Monoopadbuja, DIT, Hosu Ca0o, Pyoapcko-zeonouku Qakyamem, beozpao, 524 cmp. 3. RAHMHJIOBHMB, /L, KAPOBMB-MAPMUMRB B., JIKKOBHMB B., TIPHOT OPATI M., TAHACHJEBIP M., 2016. IIapaerpui KojuH ne(uHumnry OHTHMAJIHy TIDOH3BOJUby Ha(THMx OymroTHHa HIpH HpHMCHH MeXaHHUuKC MeTOJIe ...
... OTBOpeH H (bjryM)L ce aKyMyJMpa H3HaJL pajlHor BeHTMJaA y TyOMHry MO JVWDkMHe cTyOa. ( HemnocpeHo npe mouerka yTHCKHBaMa raca ). Ha crmmn 3.1.1 B – Perynarop H panHuH BeHTHJI Cy OTBOpeHH. VTHCHyTH rac ynaaH y TyOHHT KpO3 pajiHH BEHTHJI H HCTHCKyJe CTyO TeuHOCTH IIpeMa IIOBPpIHHHH. TIpoTHBHoBpaTH ...Тамара Бркан. Анализа рада гас лифта на нафтном пољу К, 2024
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Геолошке карактеристике лежишта нафте која се експлоатишу еруптивном методом
Милица Милићевић (2024)Геолошке карактеристике специфичних лежишта утичу на различите начине на ефикасност еруптивне методе. Најзначајније геолошке карактеристике које делују на еруптивну методу јесу порозност, пропусност, тип лежишта, резервоар стијене, као и тип замки. Еруптивна метода подразумјева коришћење природног притиска ради лакше експлоатације нафте и гаса из резервоара. У завршном раду су приказани различити типови лежишта и њихове геолошке карактеристике, као и предности и недостаци еруптивне методе код истих.... BboM| & a) ZASVOĐENA b)TEKTONSKIEKRANJ a)ZASVOĐENA b) STRATIGRAFSKI EKRAN a) LITOLOŠKI EKRAN š # | SLOJNA š LEŽIŠTA i Š '3 1. LEŽIŠTA SA TEKTONSKIM TRAPOM 2. LEŽIŠTA SA MORFOLOŠKIM TRAPOM (UZVIŠENJA, MASIVI.....) |- a) ZASVOĐENA b)TEKTONSKI EKRAN| a)DISJUNKTIVNOG b) EROZIONOG c) BIOGENOG ...
... SOČIVASTA LEŽIŠTA 2. GNEZDASTALEŽIŠTA III ZONARNA %» 7 + ŽIŠ — —~ __ O LEŽIŠTA % - IV KOMPLEKSNA. LEŽIŠTA Cnuka 1.KnacaQgkauuja nexHurra Ha(bre B raca ripeMa reHeTCKO-MOP(boOJIOIH"IKHM KapakTepHcTHKaMa (AKcHH 1962/67) 2.1. Cnojga mexumrra Ha(bre u raca CnojHa eMHMmrma ce uHjeHMe MHpeMa TeCHC3H ...
... — 0,72 Sw„i) = 0,25. OBaj MeTOJ OMoryhaBa HpHMJeHy rpaQHMKoHa 3a mpenBHbame yKyLHor (Qakropa noOuMJaba HaQTe npH pa3HnHuHTHM OJIHOCHMa BOJIĆ H Ha(b)Te, Kopucrehu H3pauyHaTe BpHjeJiHoOcTH Bapujanuje IIpOHyCTJBHBOCTH H OJIHOCa IIOKpeTJBHBOCTH. • MsapaayHaBaMĐe KyMyJIaTHBHe IIpDOH3BOJUbe Ha(bTe (Np) ...Милица Милићевић. Геолошке карактеристике лежишта нафте која се експлоатишу еруптивном методом, 2024
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Sustainable use of the Kalenić deponies
Polomčić Dušan, Bajić Dragoljub, Ratković Jelena, Pajić Pajić. "Sustainable use of the Kalenić deponies" in Proceedings of the 8th International Symposium on Natural Resources Management, Zaječar:John Naisbitt University, Faculty of Management (2018): 160-166
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The Potential of and Barriers to Renewable Energy Sources in Serbia
Ivezić Dejan, Đajić Nenad, Živković Marija. "The Potential of and Barriers to Renewable Energy Sources in Serbia" in Energy Sources, Part: B Economics Planning and Policy 8 no. 2, USA:Taylor and Francis (2013): 162-170
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Geothermobarometric investigations of Hercynian granitoids of East Serbia
Bosić Dragana, Erić Suzana, Šarić Kristina, Kostić Bojan, Cvetković Vladica, Jovanović Dragan (2016)Bosić Dragana, Erić Suzana, Šarić Kristina, Kostić Bojan, Cvetković Vladica, Jovanović Dragan. "Geothermobarometric investigations of Hercynian granitoids of East Serbia" in Geologica Macedonica, sp. iss. Third Congress of Geologists of Republic of Macedonia 2 no. 4, Struga :Macedonian Geological Society (2016): 467-468
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Water supply and groundwater quality in Republic of Serbia
Polomčić Dušan, Štrbački Jana, Bajić Dragoljub. "Water supply and groundwater quality in Republic of Serbia" in Proceedings of the 8th International Symposium on Natural Resources Management, Zaječar:John Naisbitt University, Faculty of Management (2018): 205-211
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Study of the Synergetic Effect of Co-Pyrolysis of Lignite and High-Density Polyethylene Aiming to Improve Utilization of Low-Rank Coal
Ivan Kojić, Achim Bechtel, Nikoleta Aleksić, Dragana Životić, Snežana Trifunović, Gordana Gajica, Ksenija Stojanović (2021)... oC (b), 450 oC (c) and 500 oC (d)., Figure S2: TICs of liquid products obtained by HDPE pyrolysis in the open system at 400 oC (a), 450 oC (b) and 500 oC (c), Figure S3: TICs of aliphatic fractions of liquid products obtained by lignite/HDPE co-pyrolysis in the open system at 400 oC (a), 450 oC (b) and ...
... (a), 450 oC (b) and 500 oC (c), Figure S7: Mass fragmentograms m/z (170 + 184 and 178 + 192) of aromatic fractions of liquid products obtained by pyrolysis in the open system at 500 oC; lignite (a, c), lignite/HDPE mixture (b, d), Figure S8: TGA-FTIR thermograms of lignite (a), HDPE (b) and lignite/HDPE ...
... obtained by pyrolysis in the open system at 500 oC; lignite (a), HDPE (b), lignite/HDPE mixture (c), Figure S5: TICs of aromatic fractions of lignite EOM (a), and liquid products obtained by lignite pyrolysis in the open system at 400 oC (b), 450 oC (c) and 500 oC (d), Figure S6: TICs of aromatic fractions ...Ivan Kojić, Achim Bechtel, Nikoleta Aleksić, Dragana Životić, Snežana Trifunović, Gordana Gajica, Ksenija Stojanović. "Study of the Synergetic Effect of Co-Pyrolysis of Lignite and High-Density Polyethylene Aiming to Improve Utilization of Low-Rank Coal" in Polymers, MDPI AG (2021). https://doi.org/10.3390/polym13050759
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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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Assessments of effects of implementation of strategic plans for development of Belgrade District heating system
The district heating system (DHS) is one of the key elements of the Belgrade energy system. Overview of the current state and basic characteristics of the DHS are presented in this paper. The focus is on the planned development of DHS and on the analyses of effects of realization of measures and projects defined by strategic documents related to DHS which are adopted by city authorities (Development Strategy of DHS and Strategy of Belgrade Development). Two exploratory scenarios were ...Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Miodrag Grujić. "Assessments of effects of implementation of strategic plans for development of Belgrade District heating system" in Sustainable Cities and Society, Elsevier BV (2020). https://doi.org/10.1016/j.scs.2020.102304
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Geoenvironmental Investigations at a Smelter Location in Bor (Serbia)
Petar Papić, Zvonimir Milijić, Jana Stojković, Jovana Milosavljević, Maja Todorović, Marina Ćuk, Željko Kamberović (2014)Petar Papić, Zvonimir Milijić, Jana Stojković, Jovana Milosavljević, Maja Todorović, Marina Ćuk, Željko Kamberović. "Geoenvironmental Investigations at a Smelter Location in Bor (Serbia)" in Challenges : Sustainable Land Management – Climate Change, Advances in Geoecology 43, Catena Verlag GMBH (2014)