Претрага

Упит dcterms_creator_txt:Krstić Slađana D.

991 items

  • The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector

    Aleksandar R. Madžarević, Dejan D. Ivezić, Miloš L. Tanasijević, Marija A. Živković (2020)
    Natural gas is used for the production of almost 20% of total energy today. The natural gas security of the Republic of Serbia is an urgent strategic, political and security issue. Serbia is one of the most vulnerable countries in Southeast Europe, because it only has one supply route. This study is a contribution to efforts to better understand the factors affecting energy security through the implementation of a new methodology based on the fuzzy–AHP synthesis model for measuring ...
    energetska bezbednost, prirodni gas, fazi AHP, AHP višekriterijumska analiza, fazi teorija

  • Influence of mono- and two-component organic modifiers on determination of lipophilicity of tetradentate Schiff bases

    Nikola Stevanović, Aleksandar Mijatović, Aleksandar Lolić, Mario Zlatović, Rada Baošić (2021)
    Ispitivani su uticaji primene mono- i dvokomponentnih organskih modifikatora na određivanje lipofilnosti 12 tetradentatnih Šifovih baza metodom reverzno-fazne tankoslojne hromatografije. Osnovni cilj je da se proceni tip interakcije između posmatranih jedinjenja i komponenti primenjenih hromatografskih sistema i uspostavi neki obrazac ponašanja kako bi se lakše izabrala kombinacija organskih modifikatora koji će simulirati interakciju u biološkim sistemima na osnovu činjenica da iste osnovne intermolekularne interakcije su odgovorne za ponašanje supstanci i u biološkom i u hromatografskom sistemu. Primenjeni organski modifikator ...
    Šifove baze, Lipofilnost, RP-TLC, Organski modifikatori
    ... Perušković, D. S., B. Darić, A. Blagus, N. R. Stevanović, A. V. Pavlović, A. D. Lolić, and R. 468 M. Baošić. 2015. “Influence of Organic Modifiers on RP-TLC Determination of 469 Lipophilicity of Some Polydentate Schiff Bases.” Monatshefte Fur Chemie 146(1):1-6. 470 Perušković, D. S., N. R. Stevanović ...
    ... Organic modifier ε D S P χd χe χn η THF 7.5 1.75 4.4 4.0 0.38 0.20 0.42 0.46 n-PrOH 22.8 1.68 4.1 4.0 0.54 0.19 0.27 2.30 Ac 21.5 2.88 3.4 5.1 0.35 0.23 0.42 0.32 MeOH 31.2 1.70 3.0 5.1 0.48 0.22 0.31 0.60 ACN 37.1 3.92 3.1 5.8 0.31 0.27 0.42 0.37 ε–dielectric constant; D-dipol moment; S-elution ...
    ... Relationships.” Quant. Struct. Act. Relat. 5:81–88. 447 Jones, Robert D., David A. Summerville, and Fred Basolo. 1979. “Synthetic Oxygen Carriers 448 17 Related to Biological Systems.” Chemical Reviews 79(2):139–79. 449 Krasikov, V. D. 2003. “Contemporary Planar Chromatography.” Journal of Analytical ...

  • Kinetics, mechanism, and equilibrium studies of the reactions between a ruthenium(II) complex and some nitrogen- and sulfur-donor nucleophiles

    Aleksandar M. Mijatović, Ratomir M. Jelić, Jovana Bogojeski, Živadin D. Bugarčić, Biljana Petrović (2013)
    Kinetika i mehanizam reakcija supstitucije između [Ru(trpi)(bpi)Cl]+ sa nukleofilima gvanozin-5′-monofosfatom, L-histidinom, tioureom i dimetilsulfoksidom proučavani su spektrofotometrijski u 0,1 M NaClO4 na 310 K. Red reaktivnosti za odabrane ligande je: tiourea > gvanozin-5′-monofosfat > L-histidin > DMSO. Ovaj red je povezan sa elektronskim, strukturnim i hemijskim karakteristikama kompleksa i nukleofila. Reakcija supstitucije sa tioureom je proučavana na tri različite temperature (288, 298 i 310 K). Negativna entropija aktivacije DS = potvrđuje asocijativni način aktivacije. Formiranje kompleksa [Ru(trpi)(bpi)H2O]2+ sa ligandima ...
    Kinetika, Ravnoteža, Ru(II), L-Histidin, Guanozin-5' -monofosfat, Dimetilsulfoksid, Tiourea

  • Late Triassic radiolarians from the Grivska formation, internal Dinarides, SW Serbia

    Nikita Bragin, Liubov Bragina, Nevenka Đerić, Nataša Gerzina-Spajić (2019)
    Paleontology, Stratigraphy, Economic Geology, Geochemistry and Petrology, Geology, Geophysics, Geotechnical Engineering and Engineering Geology
    ... LEIN, R., JOVANoVIĆ, D. 2016. Triassic radiolarite and carbonate components from the Jurassic ophiolitic mćlange (Dinaridic Ophiolite Belt). Swiss Journal of Geosciences, 109, 3, 473–494. GAWLICK, H.-J., SUDAR, M.N., MIssoNi, S., SUZUKI, H., LEIN, R., JovANoOvIĆ, D. 2017. Triassic-Jurassic ...
    ... limestones on the right side of Lim River valley; note intensive folding; C, thin-bedded limestones with single bed of thick-bedded massive limestone; D, chert nodules in limestones; large pink nodule in the lower part of photo; small dark-grey nodule above the hammer). 20 Geol. an. Balk. poluos., ...
    ... N. & DJERIĆ, N. 2017. Upper Triassic radiolarians from the hemipelagic chert- carbonate sections of Southwestern Serbia. In: ŠARIĆ K., PRELEVIĆ D., SUDAR M., CvETKoVIĆ V. (Eds.), EGU series: Emile Argand Conference - 13th Workshop on Alpine Ge- ological Studies, September 7th-18th 2017, Zlatibor ...

  • Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements

    Filip Miletić, Predrag D. Jovančić, Milos Milovančević, Dragan Ignjatović (2020)
    The capacity of the rotor excavator depends largely on the operation of the subsystem for digging. There is a great contribution to the correct and sharp teeth when the capacity is the highest. In the function of time, the teeth become clogged due to abrasive wear, or changes in their geometric shape. To analyze the bucket wheel drive in depend on wear of the cutting elements in this study adaptive neuro fuzzy inference system (ANFIS) approach was implemented. ANFIS ...
    Pogon rotornog točka, habanje, rezni elementi, ANFIS
    ... Miletić, Predrag D. Jovančić, Milos Milovančević, Dragan Ignjatović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements | Filip Miletić, Predrag D. Jovančić, Milos ...
    ... Baharom SB, Nor NM, Petkovic D. Potential of adaptive neuro fuzzy inference system for evaluating the factors af- fecting steel-concrete composite beam's shear strength. Steel Compos Struct 2016;21(3):679–88. [17] Mansouri I, Shariati M, Safa M, Ibrahim Z, Tahir MM, Petković D. Analysis of in- fluential ...
    ... com/locate/advengsoft Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements Filip Miletića,⁎, Predrag D. Jovančića, Milos Milovančevićb, Dragan Ignjatovića aUniversity of Belgrade - Faculty of Mining and Geology, Djušina 7, 11 000 Belgrade, Serbia bUniversity ...

  • Exhumation history of the Juhor Mts. in central Serbia, the Northern Serbo–Macedonian Subunit

    Uros Stojadinovic, Hannah Pomella, Nemanja Krstekanić, Bojan Kostić, Maja Maleš, Nikola Randjelovic, Miloš Radonjić (2024)
    Northern Serbo–Macedonian Subunit, low-t thermochronology, kinematic analyses, extensional deformations

  • On the distribution modulo 1 of the sum of powers of a Salem number

    Dragan Stankov (2016)
    It is well known that the sequence of powers of a Salem number θ, modulo 1, is dense in the unit interval, but is not uniformly distributed. Generalizing a result of Dupain, we determine, explicitly, the repartition function of the sequence , where P is a polynomial with integer coefficients and θ is quartic. Also, we consider some examples to illustrate the method of determination.
    Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomials
    ... http://dx.doi.org/10.1016/j.crma.2016.03.012 1631-073X/ 2016 Académie des sciences. Published by Elsevier Masson SAS. All rights reserved. 570 D. Stankov / C. R. Acad. Sci. Paris, Ser. I 354 (2016) 569–576 Salem number θ has one conjugate, namely θ−1 , inside the unit disc, while the others are ...
    ... (x) is decreasing on [αk, βk], Sk(x) = ⎧ ⎪ ⎨ ⎪ ⎩ −Q −1 k (x) for x ∈ [αk, βk] −Q −1 k (αk) for x ∈ (−∞,αk) −Q −1 k (βk) for x ∈ (βk,∞) 570 D. Stankov / C. R. Acad. Sci. Paris, Ser. | 354 (2016) 569-576 Salem number 6 has one conjugate, namely 6~!, inside the unit disc, while the others are ...
    ... 00) 1(x) is decreasing on [a, Bx], in the case Q, —Q, 1(x) for x € [ap, Bel Sx(X) = ~Q; (ax) for x € (—00, ax) ~Q; | (Bx) for x € (Bx, 00) D. Stankov / C. R. Acad. Sci. Paris, Ser. I 354 (2016) 569–576 571 in the case Q −1 k (x) is increasing on [αk, βk]. Setting g(x) = π −1 ∑K k=1(arcc ...

  • Kvantitativne karakteristike eksploatacionog režima podzemnih voda na izvorištu "Jaroš" - Sombor

    Dušan Polomčić, Jelena Ratković, Vesna Ristić Vakanjac, Dejan Tadić, Bojan Hajdin (2024)
    Izvorište "Jaroš" formirano je na prostoru SOmbora. Podzemne vode koje se zahvataju na izvorištu sa ukupno 18 bunara koriste se za vodosnabdevanje grada Sombora, prigradskih i okolnih naselja. Podzemne vode se zahvataju iz zbijenog tipša izdani sa slobodnim nivoom kvartarne starosti. Hidrodinamički model režima podzemnih voda izrađen je u cilju analize eksploatacionog režima i bilansa podzemih voda na izvorištu "Jaroš". Primenom hidrodinamičkog modela zasnovanog na numeričkoj metodi konačnih razlika određen je bilans podzemnih voda za područje istraživanja predmetnog izvorišta, ...
    hidrodinamička analiza, zahvatanje podzemnih voda, modeliranje podzemnih voda

  • Određivanje parametara smičuće čvrstoće tla primenom statističke metode

    Božidar Rudnjanin (2024)
    Određivanje parametara smičuće čvrstoće tla je od ključne važnosti u geotehničkom inženjerstvu jer utiče na stabilnost i nosivost raznih građevinskih konstrukcija. Ovaj master rad obrađuje temu primene deskriptivne statistike za analizu parametara smičuće čvrstoće tla,čime se obezbeđuje osnov za donošenje odluka o planiranju i izvođenju građevinskih projekata.U prvom delu rada, prikupljaju se relevantni podaci o smičućoj čvrstoći tla iz prethodnih laboratorijskih ispitivanja za trasu buduće brze saobraćajnice Novi Sad - Ruma.Ti podaci uključuju vrednosti smičuće čvrstoće i različite faktore ...
    deskriptivna statistika, parametri čvrstoće tla, geostatistika
    ... 30[1 + 1,7 * 0,525 * F]: 30,55 ' 28 m C (kPa) - V je nepoznat 3.5 |i r3] E 3 •• H a D 2.5 Š e Vrednostiparametara = r ? Normalna raspodela o [ 1.5 ——Xmean i | š Xlow *rš 1 • d d ——Xmean Ž XI = OW o 5 0.5 [ 0 -60 -40 -20 0 20 40 60 80 100 Vrednosti kohezije c (kN/m ...
    ... DATUM: OBI IO; KONTROLISAO: ~ 20.04.2021. — _O ĆO. d Š - Aleksandra Kosanović, dipl.ing.geol. Izdanje/izmena:1/4 (11.03.2020.) HZ.QO.LA-020 294/294 O6pasau 1 H3JABA O AYTOPCTBY 3ABPII(IHOT PAJIA Hwe H ripe3HMe cTy,leHTa &)@u W ]D 3464 - Bpoj HHJlekca [ 2225 /24 Hs3jaBMbyjeM Ja je ...
    ... slučajna promenljiva X ima normalnu raspodelu sa parametrima Ax i o, ako je njena funkcija gustine raspodele verovatnoće određena obrascem: fO) = e 310 D] Pri čemu je: o — standardna devijacija Ax - odstupanje rezultata pojedinačnih od srednje vrednosti merene veličine f(x) - funkcija gustine raspodele ...

  • Hidrogeološke karakteristike područja Cerničkog polja (Istočna Hercegovina) sa posebnim osvrtom na rizik od zagađena podzemnih vodnih resursa

    Petar Vojnović (2023)
    ... · Č f}\ - / : js 4; - llll -5= -070 : D e E 9 – >= :i EODO 7 OCı - > y —AAA OO _ _JA Š Ć 1969 „ O o M ayr s /20 ŠA —— O, Ž Z - UniverztetuN Sad 55e ” 5 niverzitet u Novom Sadu – K9 KOA O J % c . OE kk Prirodno-matematički fakultet · 5 I I I I I e +) d\ ~ Š o 7 o e „ NEN . __ . „VOVISN9 ...
    ... ljiva katalitička kombinacija CaO/trietanolamin u sihntezi etil-estara masnih kiselina iz otpadnih ulja suhcokreta OR-6. Nataša B. Sarap, Jelena D. Krneta Nikolić, Milica M. Rajačić, Ivana S. Vukanac, Marija M. Janković, Goran Češljar, Ilija Đorđević: Procena radioekološke situacije u životnoj ...
    ... karakteristika pošumljenih površina u cilju tipološke klasifikacije staništa i ocene stanja životne sredine kompleksa 'Stepin lug' – Beograd 7 d % Voda HIDROGEOLOŠKE KARAKTERISTIKE PODRUČJA CERNIČKOG POLJA (ISTOČNA HERCEGOVINA) SA POSEBNIM OSVRTOMI NA RIZIK OD ZAGAĐENJA PODZEMINIH VODNIH ...

  • Using gravity data to define structural correlation affecting the formation of Neogene basins

    Snežana Ignjatović, Ivana Vasiljević, Branisav Sretković, Milanka Negovanović (2023)
    A gravity survey can help to define the structural correlation in the study area. The structures that have influenced the development of Neogene basins can be defined using gravity data. By applying mathematical transformations to gravity data, the geological structures (faults, nappes, etc.) that impacted the formation of Neogene basins can be defined. We have taken the part of the Dinarides as the test region. The paper presents the results obtained using the procedure residual, vertical gradient, and total ...
    gravity survey, mathematical transformation, basin

  • Surface functional groups and degree of carbonization of selected chars from different processes and feedstock

    Marija Ilić, Franz-Hubert Haegel, Aleksandar Lolić, Zoran Nedić, Tomislav Tosti, Ivana Sredović Ignjatović, Andreas Linden, Nicolai D. Jablonowski, Heinrich Hartmann (2022)
    The knowledge ofthe structural and chemical properties of biochars is decisive for their application as technical products. For this reason, methods for the characterization of biochars that are generally applicable and allow quality control are highly desired. Several methods that have shown potential in other studies were used to investigate two activated carbons and seven biochars from different processes and feedstock. The chars were chosen to cover a wide range of chemical composition and structural properties as a hardness ...
    Biougalj, različiti procesi dobijanja, različite sirovine, površinski aktivne grupe, x-ray, FT-IR,XPS
    ... larger than that of the D peak. The spectra in Fig 9b show higher intensity. AC1 shows a higher intensity of the D peak, whereas HW1100g shows a higher G peak. The spectrum of PW700g (Fig 9c) has very low intensity and like AC1 a higher D peak. The intensity ratio of D and G peak (Ip/IG) was determined ...
    ... carbonization of selected chars Table 9. Ratio of the heights of D and G peak (ID/IG), crystallite size calculated from ID/IG, and the wavenum- bers v „. of peak maxima of the Raman spectra of the chars. Char Ip/IG L,/nm V x(D) /cm" Voeax(G) / cm" ACI 2.65 19 1336 1588 AC2 3.22 15 1337 1576 ...
    ... Ivana Sredović Ignjatović, Andreas Linden, Nicolai D. Jablonowski, Heinrich Hartmann. Supervision: Marija Ilić. Validation: Franz-Hubert Haegel. Writing – original draft: Marija Ilić, Franz-Hubert Haegel. Writing – review & editing: Nicolai D. Jablonowski. References 1. 14. 15. 16. ...

  • Age and microfacies of oceanic Upper Triassic radiolarite components from the Middle Jurassic ophiolitic mélange in the Zlatibor Mountains (Inner Dinarides, Serbia) and their provenance

    Hans-Juergen Gawlick, Nevenka Đerić, Sigrid Missoni, Nikita Bragin, Milan Sudar, Divna Jovanović (2017)
    Neo-Tethys, trench-like basins, synorogenic deposition, evolving thrust belt, Triassic palaeogeography
    ... Qucen Charlotte Islands, British Columbia, Canada. Mećmoires de Gćologie (Lausanne) 11, 1—175. Chiari M., Djerić N., Garfagnoli F., Hrvatović H., Krstić M., Levi N., Malasoma A., Marroni M., Menna F., Nirta G., Pandolfi L., Principi G., Saccani E., Stojadinović U. & Trivić B. 2011: The Geology ...
    ... S., Suzuki H., Sudar M., Lein R. & Jovanović D. 2016b: Triassic radiolarite and carbonate components from the Jurassic ophiolitic mćlange (Dinaridic Ophiolite Belt). Swiss J. Geosci. 109, 3, 473-494, Goričan Š., Karamata S. & Batočanin-Srećković D. 1999: Upper "Triassic (Carnian- Norian) ra ...
    ... wackestone to packstone in a muddy and only slightly slicificd matrix. All radiolarians are preserved as microquartz. Sample SCG 51, Scale bar=1 mm. d — Completely slicificd greyish radiolarite. The radiolarians occur as microquartz and are visible only as ghosts in the thin section. The preservation ...

  • A Twitter Corpus and Lexicon for Abusive Speech Detection in Serbian

    Danka Jokić, Ranka Stanković, Cvetana Krstev, Branislava Šandrih (2021)
    Uvredljivi govor na društvenim medijima, uključujući psovke, pogrdni govor i govor mržnje, dostigao je nivo pandemije. Sistem koji bi bio u stanju da detektuje takve tekstove mogao bi da pomogne da internet i društveni mediji postanu bolji virtuelni prostor sa više poštovanja. Istraživanja i komercijalna primena u ovoj oblasti do sada su bili fokusirani uglavnom na engleski jezik. Ovaj rad predstavlja rad na izgradnji AbCoSER-a, prvog korpusa uvredljivog govora na srpskom jeziku. Korpus se sastoji od 6.436 ručno označenih ...
    uvredljivi jezik, govor mržnje, srpski, tviter, leksikon, korpus

  • Towards Better Valorisation of Industrial Minerals andRocks in Serbia—Case Study of Industrial Clays

    Vladimir Simić, Dragana Životić, Zoran Miladinović (2021)
    Management, Monitoring, Policy and Law,Nature and Landscape Conservation

  • Inženjerskogeološka istraživanja za potrebe izgradnje tunela T1 na putnom pravcu Požega-Kotroman

    Andrija Popović (2024)
    Tokom izrade završnog rada korišćeni su podaci koje sam dobio u saradnji sa firmom „Saobraćajni institut CIP d.o.o.“, kao i ostala odgovarajuća stručna literatura.Osnovni cilj pisanja rada jeste definisanje određenih fizičko mehaničkih parametara i predlog podgrade i načina iskopa tunela na osnovu RMR klasifikacije.
    stenska masa, RMR klasifikacija, tunel, inženjerskogeološka istraživanja
    ... VI VI III – IV VI V-VI II – IV EXCAVATION CLASSIFICATION Tiannomcia pari: Tipanor: T EOTEXHPMUKA CPEJAHA / GEOTECHNICAL UNIT E B A B D A c A B c A D A c E A c D A B E Vihxxebbepckoreonouika McTpaXuMBaMa 3a noTpe6e viarpante TyHena T1 Ha nyTHOM npaBuy TlonyxuHu npecek no ocuMi TyHena Tloxera-KorpoMaH ...
    ... MM dbw8 OM Ovv #/7M4} MY MRawhaWgM afAp eGA _ MA MBAAA WAh WA » A OOO I O D Ti L TTTTRR e ns W SuWay kg 3B, ,8 190 yy y 4704 54p P , h, MEAA | _ a 'H*if -> C4SMV (fi V TIK OL A \ ON D L JLO, ——— - as d a gipanud ul a M a — P av - __do0diii PIH?KEH5EPCKOT EOJIOHIKI/ PHPOQWMJI MCTPAžKHE ...
    ... klasifikaciji pripada IV-V kategoriji. Kvazihomogena zona D može se okarakterisati kao slaba sredina (stena) sa gledišta stabilnosti iskopa, sa očekivanim gravitacionim ispadanjem blokova iz kalote i duž ukrštenih pukotina. Geotehnička sredina D se javlja u više zona duž tunela, što znači da je u ovoj ...

  • Understanding partitioning of deformation in highly arcuate orogenic systems: Inferences from the evolution of the Serbian Carpathians

    Nemanja Krstekanić, Liviu Matenco, Marinko Toljić, Oleg Mandić, Uroš Stojadinović, Ernst Willingshofer (2020)
    orogeneza, oroklini, višesmerna ekstenzija, transkurentna kretanja, Srpski Karpati

  • Improvement of geodatabase queries within GeolISS

    Ranka Stanković (2008)

  • Building learning capacity by blending different sources of knowledge

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Dalibor Vorkapić (2016)

  • Freeze-dried nanocrystal dispersion of novel deuterated pyrazoloquinolinone ligand (DK-I-56-1): Process parameters and lyoprotectant selection through the stability study

    Jelena R. Mitrović, Maja Bjelošević Žiberna, Aleksandar Vukadinović, Daniel E. Knutson, Dishary Sharmin, Aleksandar Kremenović, Pegi Ahlin Grabnar, Odon Planinšek, Dominique Lunter, James M. Cook, Miroslav M. Savić, Snežana D. Savić (2023)
    Recently, nanocrystal dispersions have been considered as a promising formulation strategy to improve the bioavailability of the deuterated pyrazoloquinolinone ligand DK-I-56-1 (7‑methoxy-2-(4‑methoxy-d3-phenyl)-2,5-dihydro-3H-pyrazolo[4,3-c]quinolin-3-one). In the current study, the freeze-drying process (formulation and process parameters) was investigated to improve the storage stability of the previously developed formulation. Different combinations of lyoprotectant (sucrose or trehalose) and bulking agent (mannitol) were varied while formulations were freeze-dried under two conditions (primary drying at -10 or -45 °C). The obtained lyophilizates were characterized in terms ...
    Pharmaceutical Science
    ... equipped with a small volume dispersion cell, Mal- vern, UK). Results are reported as d(0.1), d(0.5), and d(0.9), repre- senting 10%, 50%, and 90% of the particle volume below a certain size, respectively, and D[4,3] as the volume-weighted mean diameter. All particle size measurements were done ...
    ... Mitrović*, Maja Bjelošević Žiberna b, Aleksandar Vukadinović", Daniel E. Knutson d, Dishary Sharmin d, Aleksandar Kremenović *, Pegi Ahlin Grabnar , Odon Planinšek , Dominique Lunter', James M. Cook “, Miroslav M. Savić”, Snežana D. Savić “ * Department of Pharmaceutical Technology and Cosmetology, University ...
    ... P., Bellazzi, G., Marini, A., 2009. Physico-chemical characterization of anhydrous D-mannitol. J. Therm. Anal. Calorim. 95 (3), 871–876. https://doi.org/10.1007/510973-008-9384-5, Divović Matović, B., Knutson, D., Mitrović, J., Stevanović, V., Stanojević, B., Savić, S., 'Cook, J.M., Savić, M.M ...