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Упит dcterms_creator_txt:Tijana B. Vlašković

922 items

  • 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

  • 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

  • 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
    ... through wells which are no longer produ- cing oil, and are still in contact with an aquifer. In the initial phase, injection of water through B-32, B-31, B-60 and B-63 wells is planned. With the increase of produced water, it will be necessary to consider other wells for injection. In the case of a pump ...
    ... 1995; 99: 197–203. 12. Yang CL. Electrochemical coagulation for oily water demulsification. Sep Purif Technol 2007; 54: 388–395. 13. Bande RM, Prasad B, Mishra IM, et al. Oil field effluent water treatment for safe disposal by electro-flotation. Chem Eng J 2008; 137: 503–509. 14. Ichikawa T, Itoh K ...

  • 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) ...

  • 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 ...

  • 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)

  • 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)

  • 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

  • Kontaktni metamorfizam gornjokrednih sedimentnih stena Rudnika

    Kostić N. Bojan (2021)
    Kontaktni metamorfizam gornjokrednih sedimentnih stena na planini Rudnik ispitivan je na uzorcima iz pet bušotina. Definisano je šest varijeteta krednih stena (protolita) koji čine dve litološke jedinice izgrađene od klastičnog, karbonatnog i klastično-karbonatnog materijala. Vulkanskom aktivnosti na Rudniku formirana su vulkanska tela koja se utiskuju duž slojevitosti sedimentnih stena, a neka ih presecaju u vidu dajkova. Starost ovog vulkanskog događaja određena je na 23.9 miliona godina. Ovaj miocenski vulkanizam doveo je do kontaktno metamorfnih promena sedimentnih stena i obrazovanja skarnova ...
    Rudnik, kontaktni metamorfizam, sedimentne stene, hornfels, skarn, granati, vezuvijan

  • Economic And Technical Aspects Of Transformer Operation

    Aleksandrović Snežana, Jović Mihajlo (2016)

  • 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
    ... aUniversity of Belgrade, Faculty of Mining and Geology, Serbia b City of Belgrade, Belgrade Wholesale Market, Serbia A R T I C L E I N F O Keywords: District heating LEAP Primary energy factor Import dependency CO2 emission A B S T R A C T The district heating system (DHS) is one of the key ...
    ... Sustainable Cities and Society, 32, 56–66. Amer-Allam, S. B., Münster, M., & Petrović, S. (2017). Scenarios for sustainable heat supply and heat savings in municipalities - the case of Helsingør, Denmark. Energy, 137, 1252–1263. Arandjelovic, B., Vukmirovic, M., & Samardzic, N. (2017). Belgrade: Imaging ...
    ... 69–77. Lubinski, B., & Weidlich, I. (2020). Guidelines for technical assessment of District Heating systems. Ecoheat4cities. https://www.euroheat.org/wp-content/uploads/2016/04/ Ecoheat4cities_3.1_Labelling_Guidelines.pdf. Lund, H., Duic, N., Østergaard, P. A., & Mathiesen, B. V. (2018). Future ...

  • 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
    ... cos(2(m1+1)t ) =−cos(π−2(m1+1)t ) =−cos((2m1+1)(π−t )). Therefore if m is odd then for each interval I = [a,b] ⊆ [0,π] such that | f2m(t )| > 1, a < t < b, there is the interval I ′ = [π−b,π−a] of the equal length such that | f2m(t )| ≤ 1, t ∈ I ′. We conclude that 1 π ∫π 0 f2m(t ) = 0.5 for m odd ...
    ... cos(2(m, +1) t) = —cos(#—2(m,+1)f) = —cos((2m, + 1)(4-f)). Therefore if m is odd then for each interval I = [a, b] S [0,2] such that | fom(t)| > 1, a< t < b, there is the interval I' = [1 — b, 2 — a] of the equal length such that | fo)(t)| < 1, t € I’. We conclude that 1 fo’ fom(t) = 0.5 for m odd so that ...
    ... for many valuable remarks and comments. References [1] P. B. Borwein, S. Choi, R. Ferguson, J. Jankauskas, “On Littlewood polynomials with prescribed number of zeros inside the unit disk”, Can. J. Math. 67 (2015), p. 507-526. [2] P. B. Borwein, T. Erdélyi, R. Ferguson, R. Lockhart, “On the zeros ...

  • Linear-motor plunger pump increases lifting efficiency

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

  • 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

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

    Petar Papić, Zvonimir Milijić, Jana Stojković, Jovana Milosavljević, Maja Todorović, Marina Ćuk, Željko Kamberović (2014)
    ... Demir Behaviour of KNOs Fertilizer in Soil by the View of Land Conservation Mirjona Todosijevic, Miodrag Zlatic, Itlado Dragovic, Vukaiin Milianovit, Tijana Vulevic and Gordana Vukelic Sustainable Management of Soil Resources in Mountainous Areas of Western Serbia Using Conservation Measures Panagiotis ...
    ... f;,:: :ii; .t .,t:r.t: t ",ryi,lt::za- .)'..., I t Btt.t:,1! (r. {'+ al 4&h21l,tJ u"'';'?" + b,,I1,'t a../fi., i ,3?: {',ta21zsfi 4u'iaxr ,t*: a Tbtt:aaaf w Lv :e litr/r:?4r :3 '/b;43 ?.t/t2Ft rf, .a, t4tz..:' ,tu:'1.4?,' % a Fig. 2: Geochemical map of arsenic concentrations fmg/kgJ ...
    ... Serbia) I2 25 39 49 58 66 74 Miodrag Zlatit, & Stanimir Kostadinov (Editors) 82 Ratko Kadovic, Sneiana Belanovit, I{ada Dragovic, Jelena B eloica, Mirj ana To do s ij evic, Tij ana Andrij anic and Boban Milojkovic Influence of Soil Organic Carbon on Soil Erodibility in Forest Soils in Rasina ...

  • Squamate remains from the Early and Middle Pleistocene Srem series in the Mutalj Quarry (Beočin, Northern Serbia)

    Đurić Dragana, Bogićević Katarina, Nenadić Draženko (2016)

  • Optimisation of underground mine decline development system using genetic algorithm

    Zoran Gligorić, Aleksandar Ganić, Rade Tokalić, Aleksandar Milutinović (2014)

  • Geothermobarometric investigations of Hercynian granitoids of East Serbia

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

  • A multi-criteria approach for assessing the potential of renewable energy sources for electricity generation: Case Serbia

    Boban Pavlović, Dejan Ivezić, Marija Živković (2021)
    When assessing the potential of renewable energy alternatives for electricity generation, it is necessary to implement a multi-perspective approach that includes economic, technical, environmental, and socio-political criteria. For the evaluation of criteria and alternatives, the Fuzzy Analytical Hierarchy Process (FAHP) method is applied. The obtained weights are formed according to the values of energy indicators and expert judgments. The use of a fuzzy numerical value scale for the assessment of expert judgments and energy indicators provides a more sensitive ...
    Proizvodnja električne energije, Obnovljivi izvori energije, Višekriterijumsko odlučivanje, Srbija

  • Keyword Extraction from Parallel Abstracts of Scientific Publications

    Slobodan Beliga, Olivera Kitanović, Ranka Stanković, Sanda Martinčić-Ipšić (2017)