Претрага

Упит dcterms_creator_txt:Radić B

842 items

  • 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 Change

  • Geothermobarometric investigations of Hercynian granitoids of East Serbia

    Bosić Dragana, Erić Suzana, Šarić Kristina, Kostić Bojan, Cvetković Vladica, Jovanović Dragan (2016)

  • An oilfield in Libya: A new model to enhance waste water disposal

    Dušan Danilović, Vesna Karović Maričić, Nori Elhaddad, Branko Leković (2016)
    нафта, лежишне воде, припрема

  • 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 ...
    razletanje, bušenje, miniranje, površinska eksploatacija, bezbednost, nesreća

  • 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)
    ... 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 ...

  • Small Mammals from the Velika and Mala Balanica caves (Niš, southern Serbia)

    Bogićević Katarina, Nenadić Draženko, Mihailović Dušan (2016)

  • 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 ...

  • Soil oscillation law parameter determination with the application of Lagrange’s theorem at “Kovilovača“ open pit

    Suzana Lutovac, Nebojša Vidanović, Čedomir Beljić, Zoran Gligorić (2015)
    ... 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 ...

  • 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.
    поврмени гас лифт, континуални гас лифт, оперативни вентил, компримован гас
    ... 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 ...

  • 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.
    слојна лежишта, масивна лежишта, зонарна лежишта, геолошке карактеристике, еруптивна метода
    ... 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) ...

  • Sustainable use of the Kalenić deponies

    Polomčić Dušan, Bajić Dragoljub, Ratković Jelena, Pajić Pajić (2018)

  • The Potential of and Barriers to Renewable Energy Sources in Serbia

    Ivezić Dejan, Đajić Nenad, Živković Marija (2013)

  • Geothermobarometric investigations of Hercynian granitoids of East Serbia

    Bosić Dragana, Erić Suzana, Šarić Kristina, Kostić Bojan, Cvetković Vladica, Jovanović Dragan (2016)

  • Water supply and groundwater quality in Republic of Serbia

    Polomčić Dušan, Štrbački Jana, Bajić Dragoljub (2018)

  • 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)
    Polimeri i plastika, opšta hemija
    ... 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 ...

  • 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 polynomials

  • Assessments of effects of implementation of strategic plans for development of Belgrade District heating system

    Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Miodrag Grujić (2020)
    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 ...
    Daljinsko grejanje, LEAP, Primarni energetski faktor, Uvozna zavisnost, CO2 emisija

  • Geoenvironmental Investigations at a Smelter Location in Bor (Serbia)

    Petar Papić, Zvonimir Milijić, Jana Stojković, Jovana Milosavljević, Maja Todorović, Marina Ćuk, Željko Kamberović (2014)

  • A Fuzzy Expert Model for Availability Evaluation

    Dejan Ivezić, Miloš Tanasijević, Predrag Jovančić, Radiša Đurić (2019)
    Each technical system within itself carries the great potential danger of possible occurrence of failure and damages. Mining machines are characteristic by great investment values, costs of unplanned shutdowns, complex working conditions, and environment and workers hazards. Systematic monitoring of the mining machinery is of great importance for the management of the mining companies. Availability is the overall concept of quality of service. Includes information regard to operating state, an idle state, a standby state and shut down. The ...
    raspoloživost, ekspertski sistem, fazi teorija, buldozeri
    ... 25/j=2, 1/j=3, 0.25/j=4, 0/j=5); (7) - good = (0/j=1, 0/j=2, 0.25/j=3, 1/j=4, 0.25/j=5); - excellent = (0/j=1, 0/j=2, 0/j=3, 0.25/j=4, 1/j=5); B. Questionnaire, statistical processing Employees operating with the bulldozers or connected to their maintenance and logistic are asked to field in ...
    ... grades (given as linguistic variables) [4]. TABLE I. QUESTIONNAIRE FOR ASSESSMENT OF AVAILABILITY INDICATORS A n a ly st N o . A v a il a b il it y in d ic a to r Questionnaire: Bulldozer Liebherr – Drmno Open Pit Mine Grade: Excellent Good Average Adequate Poor The degree ...
    ... of 33%. The lowest level of availability has the Drs-D machine. The availability is evaluated as “poor” and “adequate” in extent of 30%. Figure 4.b shows the mean value of availability for all three types of machines. It is noted that the Catерillar is generally rated with "excellent" and "good" ...

  • Linear-motor plunger pump increases lifting efficiency

    Bojan Martinović, Dušan Đekić, Dušan Danilović, Pavel Isaev (2022)
    plunger, linear, motor, pumps