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Упит dcterms_creator_txt:Maja Z. Franković

657 items

  • Mikroelementi u uljnim šejlovima Aleksinca i njihov uticaj na životnu sredinu

    Nikoleta Aleksić (2021)
    ... the photodegradation of metribuzin herbicide in aquatic media. Journal of Environmental Chemical Engineering 9, 105027. [4] Liu, Z., Wang, Z., Chen, H., Cai, T., Liu, Z. (2021). Hydrochar and pyrochar for sorption of pollutants in wastewater and exhaust gas: A critical review. Environmental Pollution ...
    ... ........Z-01 Olja Šovljanski, Ana Tomić, Siniša Markov: Praćenje procesa ureolize kod odabranih bakterijskih sojeva iz zemljišta................................................................................................................................................................Z-02 Sekcija: ...
    ... Jugović, Z., (2015). Decolorization of Anthraquinonic Dyes from Textile Effluent Using Horseradish Peroxidase: Optimization and Kinetic Study. Scientific World Journal, 37625, (2015), 12 pages. [13] Šekuljica, N., Prlainović, N., Jakovetić, S., Grbavčić, S., Ognjanović, N., Knežević-Jugović, Z., Mijin ...

  • Human Hemoglobin and Antipsychotics Clozapine, Ziprasidone and Sertindole: Friends or Foes?

    Lena Platanić Arizanović, Nikola Gligorijević, Ilija Cvijetić, Aleksandar Mijatović, Maja Krstić Ristivojević, Simeon Minić, Aleksandra Nikolić Kokić, Čedo Miljević, Milan Nikolić (2023)
    Packed with hemoglobin, an essential protein for oxygen transport, human erythrocytes are a suitable model system for testing the pleiotropic effects of lipophilic drugs. Our study investi gated the interaction between antipsychotic drugs clozapine, ziprasidone, sertindole, and human hemoglobin under simulated physiological conditions. Analysis of protein fluorescence quenching at different temperatures and data obtained from the van’t Hoff diagram and molecular docking indicate that the interactions are static and that the tetrameric human hemoglobin has one binding site for ...
    Inorganic Chemistry, Organic Chemistry, Physical and Theoretical Chemistry, Computer Science Applications, Spectroscopy, Molecular Biology, General Medicine, Catalysis

  • 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
    ... GC–MS analysis was carried out in the scan mode. The mass spectrometer was operated in the electron ionization (EI) mode over a scan range from m/z 45 to m/z 550. The individual peaks were identified based on the mass spectra. The quantification of the compounds for calculating molecular parameters was ...
    ... the typical m/z 170 and 184 mass fragmentograms of aromatic fraction (Figure S7); MPI 1 = 1.5 × (2-MP + 3-MP)/(1-MP + 9-MP + P) [74]; MPI 3 = (2-MP + 3-MP)/(1-MP + 9-MP) [75]; PAI 1 = (2-MP + 3-MP + 1-MP + 9-MP)/P [76]; MPI 1, MPI 3, and PAI 1 ratios are calculated from the typical m/z 178 and 192 mass ...
    ... pyrolysates of lignite/HDPE, these biomarkers cannot be identified owing to the extremely low concentrations, even using their typical fragmentation ions m/z 123, 183, and 191, respectively. In addition to n-alkanes and terminal n-alkenes, liquid pyrolysates of HDPE and lignite/HDPE mixtures contain terminal ...

  • Groundwater management by riverbank filtration and an infiltration channel, the case of Obrenovac, Serbia

    Dušan Polomčić, Bojan Hajdin, Zoran Stevanović, Dragoljub Bajić, Katarina Hajdin (2013)

  • Selection of Artificial Lift Methods: A Brief Review and New Model Based on Fuzzy Logic

    Miroslav Crnogorac, Miloš Tanasijević, Dušan Danilović, Vesna Karović Maričić, Branko Leković (2020)
    Artificial lift methods have applications in oil wells where oil production is no longer possible due to natural reservoir energy, so this necessary energy is added by introducing lift methods. In order to achieve optimum production, the selection of an artificial lift method is very important. This paper uses fuzzy logic as a mathematical and conceptual model for selection of the optimal artificial lift method. The outcome or IF-THEN rules, as the central part of the model, is based ...
    mehaničke metode, proizvodnja nafte, fazi logika, donošenje odluka, optimizacija
    ... intensity of change in the results. For the output result Z to move to the ESP standard, the changes of input parameters are to the extent of 10% under the indicators A and C, while the parameter changes under indicator B are 25%. In the case where Z moves to the SRP standard, it is necessary to measure ...
    ... intensity of change in the results. For the output result Z to move to the ESP standard, the changes of input parameters are to the extent of 10% under the indicators A and C, while the parameter changes under indicator B are 25%. In the case where Z moves to the SRP standard, it is necessary to measure ...
    ... intensity of change in the results. For the output result Z to move to the ESP standard, the changes of input parameters are to the extent of 10% under the indicators A and C, while the parameter changes under indicator B are 25%. In the case where Z moves to the SRP standard, it is necessary to measure ...

  • Structural dissymmetrization of optically anisotropic Grs64±1Adr36±1Sps2 grandite from Meka Presedla (Kopaonik Mt., Serbia)

    Pavle Tančić, Aleksandar Kremenović, Predrag Vulić (2019)
    In this paper, grandite core with Grs64±1Adr36±1Sps2composition was crystallographically studied. This core represents zone A of the macroscopically visiblefive A–E zones of the optically anisotropic Grs58–64 Adr36–42Sps2 grandite. The applied procedure includes the detailed analysis of the powder diffraction patterns, and the Rietveld refinements of the crystal structures in a series of 18 space groups and two mixtures, which were followed by the comparative analysis of the R-values, site occupancy factors, and the bond lengths and angles. Synthesis of all ...
    grandite, XRPD, crystal structure, structural dissymmetrization

  • Threshold-induced correlations in the Random Field Ising Model

    Sanja Janićević, Dragutin Jovković, Lasse Laurson, Đorđe Spasojević (2018)
    Multidisciplinary
    ... 1/L), while for the exponents x and w, and for the multiexponent ζ = (ζh, ζr, ζL), we found that σν α= − = −x z w1 1/ , 1, (16) ζ βδ ν ζ ν ζ= = =z z z/ , 1/ , 1/ , (17)h r L where σ, ν, z, α, β and δ are the standard RFIM exponents3,9,10. In Fig. 3 we present the collapsing for distributions of duration ...
    ... Vy, =208 3 ~ VY L=4087, R=2.22, Vy, =208 ~ = 1074 E “n” — eK a = ~z10"4 Aa gs ~~ = | we = 10° zg 1044 108 a Y eve % a 7 Ss = 194 A Sot = = % 7 z % & -6 | z mo ' EI . 10 oO mal - es = Sot ™ eS 10% 2104 : x XS ae r T - eo = = r T - T 4 a Q 10! 10° 10° . =. to! 10” 10° 10 = end Ne mid / T T T T T T T 101 ...
    ... corresponding to different values of threshold V,,. The graph demonstrates that (S),, ~ Ts/r in a broad range of thresholds, and that the power-law exponent ¥z,; varies with threshold. As can be seen in inset, when the threshold increases, the exponent 75;r decreases (from the value 1.77 for very low thresholds ...

  • Characterization and Environmental Evaluation of Recycled Aggregates from Construction and Demolition Waste in Belgrade City Area (Serbia)

    Filip Abramović, Miroslav Popović, Vladimir Simić, Vesna Matović, Radmila Šerović (2024)
    General Materials Science

  • Development of an integrated model for open-pit-mine discontinuous haulage system optimization

    Miodrag Čelebić, Dragoljub Bajić, Sanja Bajić, Mirjana Banković, Duško Torbica, Aleksej Milošević , Dejan Stevanović (2024)
    equipment selection, mine mechanization, expert judgment, linguistic variables, MCDM, FAHP

  • Development of an Integrated Model for Open-Pit-Mine Discontinuous Haulage System Optimization

    Miodrag Čelebić, Dragoljub Bajić, Sanja Bajić, Mirjana Banković, Duško Torbica, Aleksej Milošević, Dejan Stevanović (2024)
    The selection of the optimal equipment for discontinuous haulage systems is one of the most important decisions that need to be made when an open-pit mine is designed. There are a number of influencing factors, including natural (geological and environmental), technical, economic, and social. Some of them can be expressed numerically, in certain units of measure, while others are descriptive and can be stated by linguistic variables depending on the circumstances of the project. These factors are characterized by ...
    rudarska mehanizacija, znanje eksperta, lingvističke varijable, FAHP

  • Crystallography and Surface Oxidation of Stoichiometric Arsenopyrite from Šumadija-Kopaonik Pb-Zn/Polymetallic Ore District (Serbia)

    Ivana Jelić, Aleksandar Pačevski, Aleksandar Kremenović, Aleš Šoster, Andreja Šestan, Janez Zavašnik (2023)
    The behaviour and stability of arsenopyrite largely depend on its crystal structure, but studies of crystallography and structural defects are scarce. For clarification, we investigated a series of natural arsenopyrite crystals from the polymetallic Pb-Zn-(±Cu,Ag,Au,Sb,Bi,W) Šumadija-Kopaonik ore district (Serbia) by powder X-ray diffraction (XRPD). Among them, samples from the Drenjak gold mineralisation showed near-stoichiometric FeAsS composition and were further investigated by conventional and high-resolution transmission electron microscopy methods. TEM revealed abundant planar crystallographic defects and epitaxial surface oxide layer ...
    Inorganic Chemistry, Condensed Matter Physics,General Materials Science, General Chemical Engineering, crystal structure, FeAsS, oxidation, TEM, XRPD
    ... Wang, Z.; Wang, Y.; Peng, E.; Zou, S.; Deng, T.; Lai, E; Ning, J.; Dong, G.; Xu, D. Micro-Textural and Chemical Fingerprints of Hydrothermal Cobalt Enrichment in the Jingchong, Co-Cu Polymetallic Deposit, South China. Ore Geol. Rev. 2022, 142, 104721. [CrossRef] 4. · Chen,J.;Chen, Y.; Wei, Z.; Liu ...
    ... te. Can. Mineral. 2000, 38, 1265–1281. [CrossRef] 8. | Buerger, M.J. The Symmetry and Crystal Structure of the Minerals of the Arsenopyrite Group. Z. Fiir Krist.-Cryst. Mater. 1936, 95, 83–113. [CrossRef] 9. Bindi,L.; Močlo, Y.; Lćone, P.; Suchaud, M. Stoichiometric Arsenopyrite, FeAsS, from La ...
    ... 50, 471-479. [CrossRef] 10. Fuess,H.;Kratz, T.; Topel-Schadt, J.; Miehe, G. Crystal Structure Refinement and Electron Microscopy of Arsenopyrite. Z. Fiir Krist.-Cryst. Mater. 1987, 179, 335–346. [CrossRef] 11. GonzAlez-Jimćnez, J.M.; Yesares, L.; Pihia, R.; Saez, R.; de Almoddvar, G.R.; Nieto ...

  • Merenje pritiska u bušotinskom cevovodu

    Ratko Matija (2024)
    Merenje pritiska ima veliki značaj u naftovodima i gasovodima. U ovom završnom radu analizirane su različite metode merenja pritiska , kao što su merenje pritiska manometrima sa tečnostima, kapacitivnim manometrima, električnim manometrima nekim drugim. Objašnjena je kalibracija senzora pritiska koja u velikoj meri utiče na tačnost merenja. Navedeni su i objašnjeni elementi cevovoda i u vezi s tim pad pritiska, čije je merenje tema ovog završnog rada.
    merenje pritiska, manometri, kalibracija, elementi cevovoda, pad pritiska
    ... – P,?={1.7108 · 10 · Z-2-pf-Q? ·L) / D* gde su: P; – pritisak na ulazu u gasovod [Pa] P» – pritisak na izlazu iz gasovoda [Pa] 4- koeficijent trenja O - protok fluida [m"*/h] ; [kg/h] // – gustina fluida [kg/m3] L- dužina cevovoda [m] D- unutrašnji prečnik cevovoda [m] Z- faktor kompresibiliteta ...
    ... aeaaeaaaaaeaeaaaaaaaaaa a aeaagaakakaoi 26 4.2. Pad pritiska u cevovodima ............................iiieeaanaaaaaeeaaeanaaiaiaeeakeatetaaatekekete 28 L Z.(4B}0{ef.( OAAAAAAG 29 6. LITERATURA.... 1. UVOD U ovom radu analizirano je merenje pritiska u bušotinskom cevovodu, koje Je od značaja kako ...
    ... barometru sa stubom žive odgovarajuće visine. Prilikom merenja treba obratiti pažnju da se pre očitavanja žive na skali, živa podešava zavrtnjem Z tako da bude na nultom podeoku u rezervoaru. Živin barometar za merenje atmosferskog pritiska je prvi otkrio Toričeli. Pored smanjenja dužine barometra ...

  • Analiza pouzdanosti dozera angažovanih na površinskim kopovima RB Kolubara

    Filip Miletić, Dragan Milčić, Miloš Tanasijević, Miloš Milovančević (2021)
    U radu je izvršena uporedna analiza pouzdanosti transportnih sistema dozera koji rade na površinskim kopovima Rudarskog basena Kolubara. Period za koji je vršena analiza je prvih deset godina eksploatacije. Efikasnost tehnološkog procesa na otkopavanju korisne mineralne sirovine i otkrivke u velikoj meri zavisi od rada dozera. Iskorišćene su matematičke metode za aproksimaciju i identifikaciju zabeleženih vremena u radu, kako bi se dobili analitički pokazatelji pouzdanosti. Na ovaj način se bitno podiže kvalitet upravljanja procesom eksploatacije i održavanja mašina na ...
    dozeri, pouzdanost, kolubarski ugljeni basen
    ... Mašinskom fakultetu Univerziteta u Nišu. Ulazni podaci o vremenu ispravnog rada do otkaza dati su u tablici 4 i grupišu se u određeni broj intervala z. Na osnovu njih određuju se empirijske funkcije: učestalosti otkaza fe (t), kumulativne učestalosti otkaza Fe (t), pouzdanosti Re (t) i intenziteta otkaza ...
    ... papira konstruisanih u Excel–u. Postupak se sastoji od unošenja tačaka sa koordinatama [ti, F(ti)]. Broj tačaka odgovara broju posmatranih intervala z. Za verovatnoću otkaza F (ti) uzima se vrednost medijalnog ranga MRi, koja se izračunava Bernardovom aproksimacijom: gde je: i – redni broj otkaza, n ...
    ... 99,97 |] 99 | se => 8 90 z= 80 7 6 5 10 5 4 3 2 3 1 2 0,5 03 1 0.2 =749,264 ot ann fiiti 0 04 02 0,304 060,81 2 3 4567810 20 30 49, 69 80100 Poth 179 , 1 791 , 828 ...

  • Hidrogeološke karakteristike i ocena bilansa Ravaničkih krečnjaka

    Andrijana Stanišić (2024)
    Hidrogeološka problematika koja se vezuje za složene uslove cirkulacije podzemnih voda u karstu kao i kompleksnost karakterizacije karstnih izdanskih voda, predstavljaju ključne faktore za usmeravanje ka istraživanju karsta i definisanje teme završnog rada. Tematikom rada obuhvaćene su prvenstveno hidrogeološke karakteristike područja istraživanja a zatim i analiza elemenata režima i bilansa podzemnih vodnih resursa u cilju njihove pravilne valorizacije.Zapadni krečnjački pojas Karpato-balkanskog luka odvojen je od mezozojskog kompleksa Kučajsko-beljaničkog masiva navlakom crvenih permskih peščara, koja se nastavlja na krepoljinsko-senjsku zonu ...
    karstni tip izdani, bilans podzemnih voda, podzemno isticanje, sifonalna cirkulacija, Ravanički krečnjaci
    ... Period povećanja izdašnosti na vrelu “Nemanja II” vezuje se za period topljenja snežnog pokrivača (februar-maj). U periodu februar-maj pa sve do novembra dolazi do opadanja izdašnosti. Period maj-novembar predstavlja period recesije karstne izdani. Srednjegodišnji proticaj na vrelu “Klisura I” za period ...
    ... 25 m?/s, a zabeležena je u maju 2014. godine, kada je oteklo 32.57 l/s/km?. Ovo je posledica različitih nadmorskih visina u zapadnom i istočnom delu sliva, što se poklapa sa naglim topljenjem snežnog pokrivača u zapadnom delu sliva i porastom padavina. Iako se period maj-jun odlikuje najvećom količinom ...
    ... Cilj uporedne analize predstavlja sagledavanje pružanja glavnih ruptura orjentacije SZ-JI i Z-I. Rozete orjentacije pokazuju dobro poklapanje maksimuma orjentacije pružanja SZ-JI i submaksimuma orjentacije Z-I, što je bitno prilikom definisanja pravca cirkulacije podzemnih voda. Analiza rupturnog: ...

  • Surface modification of sol-gel synthesized TiO2 nanoparticles induced by La-doping

    Grujić-Brojcin Mira, Armaković Stevan, Tomić N., Abramović Biljana, Golubović Aleksandar, Stojadinović Bojan, Kremenović Aleksandar, Babić Biljana, Dohcević-Mitrović Zorana, Šćepanović Maja (2014)

  • Izbor metode otkopavanja u horizontalnim pojasima odozgo naniže na primeru ležišta Cu

    Tomislav Lazić (2024)
    Nakon brojnih geoloških i rudarskih istražnih radova, i sa površine terena i iz jame, pristupa se otkopavanju rudnog tela lociranog u centralnom delu jednog velikog ležišta bakra.Eksploatacija se obavlja u odnosu na već postojeći jamski sistem, ali i kroz novoizrađene prostorije. Za postizanje najboljih rezultata primenjena je metoda za otkopavanje rude u I eksploatacionom pojasu vrši „: Metoda otkopavanja sa zapunjavanjem otkopanog prostora odozgo naniže“.Koristi se najvećim delom dizel mehanizacija, a usklađivanjem radnih operacija postiže se veliki kapacitet na ...
    podzemna eksploatacija, bakar, otvaranje rudnika, metoda otkopavanja
    ... uruooutod · {og PARSN- o 4 GUHUSTIJI uUruulojeZ - [oIg Z O E P o tunosnq E _, n o — ~ [omq uednyf)} P A = = — T — TUuTOI[O NI bD o o To |Ž ~ ~ T Z I eurnjoy < b ~ ~. T Z I veumiloy | 9| “~ ~ 9u29)S PSPTN _ = Tabela 3.2 ...
    ... g d| - Pd «| 38 o ol E - -N - , -N i P:BO ŠA P | P |oašj 5 |ER|SŠB| s| 5s| Š |ž bO bO ŠLlSR)JER ? |2|25| Š Z5|55| ž |25| = |a| ž Š ČE.|MESE|GBSB 4 Z |Z-| M 55|D5s5| 6 |OD| Ć |5 [-" [-" F Qr Le / Qu |t Quu Tu Tu N dhg ndg Bum du Bgm m? t m km/h | T min | t/h min h kW_| l/h lt l/h lt kom/t 2371 | ...
    ... terena, (m) q- ugao unutrašnjeg trenja, (") 21 - [D F Š bSi t |} :m ss -- '= Š MM Š E R E:BR- Ž > = Vrsta podgrade F = o ? Peik"| M8 O8 Š S Z |%*5|55 % “ 3 > 5 |2 c Y H [0 >|4 (kN/m?) (kN/m” ~ (m) () I 5.000 24,00 540 65 1496| > | 4 Torkret beton il 4.000 23,00 540 60 837 |> }|4 Torkret ...

  • Zbirka rešenih zadataka iz termodinamike

    Marija Živković, Aleksandar Madžarević (2023)
    termodinamika
    ... kretanja vazdušnog mehura sa dna na površinu bazena je izoterm- ski:1 = 2 = V 2 V 1 z Skica uz zadatak 1 Jednačina stanja idealnog gasa u mehuru za stanje 1 je:1 1 = Pritisak vazduha u mehuru u stanju 1 je:1 = +  z gde je atmosferski pritisak i iznosi 101325 Pa, a g ubrzanje sile zemljine teže ...

  • A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)

    Gordana Gajica, Aleksandra Šajnović, Ksenija Stojanović, Jan Schwarzbauer, Aleksandar Kostić, Branimir Jovančićević (2021)
    The molecular and isotopic composition of biomarkers in initial bitumen isolated from immature (0.41% Rr) oil shale samples (Aleksinac deposit) and liquid products obtained by pyrolysis in open (OS) and closed (CS) systems are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in liquid products is determined. The applicability of pyrolysis type, numerous biomarkers and carbon isotopic compositions (δ13C) of n-alkanes in liquid pyrolysates is established. Pyrolysis experiments were ...
    Uljni šejl, Aleksinac, organska supstanca, otvoreni i zatvoreni sistem pirolize, biomarkeri, izotopski sastav ugljjenika

  • Geotechnical conditions of “Debelo brdo” tunnel construction on the highway E-80: Nis-Merdare-Pristina (“Peace Highway”)

    Dragoslav Rakić, Irena Basarić Ikodinović, Radojica Lapčević, Dragan Lukić (2024)
    The construction of the highway E-80 has begun in Serbia, which will represent the traffic hub of the Western Balkans and will be part of the main regional transport network of Southeast Europe. Its total length through Serbia is 77 km, and one part of the route is designed through a typical plain terrain, while a larger part of the route passes through hilly terrain. The construction of the tunnel “Debelo brdo” is planned partly in an open cut ...
    „Debelo brdo“ tunnel, temporary slopes, open cut excavation, tunnel excavation, piles

  • Preliminary regional landslide susceptibility assessment using limited data

    Igor Peshevski, Milorad Jovanovski, Biljana Abolmasov, Jovan Papic, Uroš Đurić, Miloš Marjanović, Ubydul Haque, Natasha Nedelkovska (2019)
    In this paper a heuristic approach for preliminary regional landslide susceptibility assessment using limited amount of data is presented. It is called arbitrary polynomial method and takes into account 5 landslide conditioning parameters: lithology, slope inclination, average annual rainfall, land use and maximum expected seismic intensity. According to the method, in the first stage, a gradation is performed for each of the carefully selected conditioning parameters by assigning so called rating points to the grid cells on which the ...
    klizišta, podložnost
    ... regression methods: an example from Niksar–Re- sadiye (Tokat, Turkey).– Arabian Journal of Geosciences, 8/3, 1801–1812. doi: 10.1007/s12517-014-1332-z DEVKOTA, K.C., REGMI, A.D., POURGHASEMI, H.R., YOSHIDA, K., PRAD- HAN, B., RYU, I.C., DHITAL, M.R. & ALTHUWAYNEE, O.F. (2013): Land- slide susceptibility ...
    ... J.A. (2005): Probabilistic landslide susceptibility and factor effect analysis.– Environmental Geology, 47/7, 982–990. doi: 10.1007/s00254-005- 1228-z LEE, M.J., CHOI, J.W., OH, H.J., WON, J.S., PARK, I. & LEE, S. (2012): Ensemble- based landslide susceptibility maps in Jinbu area, Korea.– Environmental ...
    ... ity regional zonation of earthquake-induced landslides in Cam- pania, Southern Italy.– Natural Hazards, 61/1, 115–126. doi: 10.1007/s11069-011- 9790-z ROSSI, M., GUZZETTI, F., REICHENBACH, P., MONDINI, A.C. & PERUCCAC- CI, S. (2010): Optimal landslide susceptibility zonation based on multiple fore- ...