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Упит dcterms_creator_txt:I. Suárez-Ruiz

59 items

  • Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites

    Marija Šuljagić, Aleksandar Kremenović, Ivan Petronijević, Adis Džunuzović, Miljana Mirković, Vladimir Pavlović, Ljubica Anđelković (2023)
    To investigate the effect of synthesis procedure and sintering temperature on the functional properties of perovskite/spinel ceramics, BaTiO3/CoFe2O4 composites were prepared by thermal decomposition, coprecipitation, and microemulsion method, and sintered at 1150°C and 1300°C. The phase composition and morphology of as-prepared powders as well as sintered ceramics were thoroughly examined by X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS). The dielectric and ferroelectric measurements were performed in detail. Generally, the ...
    Perovskite/spinel ceramics, Multiferroic, Sintering, Influence of synthesis method

  • Organoselenium functionalized oxacycles as ligands in some trans-palladium(II) complexes: biological evaluation and interaction with small biomolecules

    I. Raković, D. Ćoćić, O. Milošević-Djordjević, I. Radojević, M. N. Živanović, K. Virijević, J. Pavić, J. Tubić Vukajlović, A. Marković, J. S. Marjanović, M. D. Kostić, P. Čanović, A. Mijatović, V. M. Divac (2023)
    In this article, the biological evaluation and interaction of three selenium-based trans-palladium complexes (Pd–Se1, Pd–Se2, and Pd–Se3) with small biomolecules were performed. The UV–Vis kinetic studies on substitution reaction of synthesized complexes with selected biologically important N- and S-bonding ligands (LCys, GSH, L-Met, 50-GMP, L-His) has emphasized greater affinity of sulphur-based ligands for complex-binding, while the general order of the reactivity was L-Cys > GSH > L-Met > 50-GMP > L-His. The complex reactivity toward small biomolecules is influenced ...
    Materials Chemistry, Physical and Theoretical Chemistry

  • Towards the semantic annotation of SR-ELEXIS corpus: Insights into Multiword Expressions and Named Entities

    Cvetana Krstev, Ranka Stanković, Aleksandra Marković, Teodora Mihajlov (2024)
    Овај рад представља активности на развоју корпуса ELEXIS-sr, српском додатку вишејезичном анотираном корпусу ELEXIS-а, који се састоји од семантичких анотација и репозиторија значења речи. ELEXIS је паралелни вишејезични анотирани корпус на десет европских језика, који може да се користи као вишејезички репер за евалуацију европских језика са мање и средње развијеним ресурсима. Фокус овог рада је на вишечланим изразима и именованим ентитетима, њиховом препознавању у скупу реченица ELEXIS-sr и поређењу са анотацијама на другим језицима. Разматрају се први кораци ...
    полилексемске језинице, именовани ентитет, вишезначност значења речи, складиште смисла, LLOD

  • The ‘Umka’ landslide

    Uroš Đurić, Dragana Đurić, Miloš Marjanović, Biljana Abolmasov, Ivana Vasiljević (2024)
    We present an in-depth landslide map of the ‘Umka’ landslide near Belgrade, Serbia, at a scale of 1:5000. The map delineates elements at risk, primarily buildings and road infrastructure impacted by the landslide displacements of several cm per year, introduced during frequent reactivation stages. The Main map results from a survey of over 350 buildings and more than 7 km of state and local roads. The acquisition techniques included engineering geological field mapping, building survey, and visual interpretation of ...
    rizik od klizišta, elementi rizika, kartiranje pomoću drona, ispitivanje objekata, geotehnički monitoring

  • Composition of organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in East Herzegovina (External Dinarides, Bosnia and Herzegovina)

    Nikoleta Aleksić, Aleksandar Kostić, Miloš Radonjić (2021)
    This paper presents the first data on the organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in the East Herzegovina region of the External Dinarides. Representative, organic-rich samples from outcropping sedimentary rocks of different ages in the area (Triassic to Neogene) were selected and analysed. The organic matter was studied by Rock-Eval pyrolysis and under the microscope in reflected non-polarized light and incident blue light. The results obtained show the presence of different types of organic ...
    nafta i gas, Rock-Eval, refleksija vitrinita, maceral, termička zrelost
    ... Jelonek, I., Kommeren, K., Knowles, W., Kus, J., Mastalerz, M., Menezes, R. T., Newman, J., Oikonomopoulos, K. I., Pawlewicz, M., Pickel, W., Potter, J., Ranasinghe, P., Read, H., Reyes, J., De La Rosa Rodriguez, G., Viegas Alves Fernandes de Souza, I., Suarez- Ruiz, I., Sykorova, I. & Valentine ...
    ... M., Jelonek, I., Kommeren, K., Knowles, W., Kus, J., Mastalerz, M., Menezes, R. T., Newman, J., Oikonomopoulos, K. I., Pawlewicz, M., Pickel, W., Potter, J., Ranasinghe, P, Read, H., Reyes, J., De La Rosa Rodriguez, G., Viegas Alves Fernandes de Souza, I., Suarez- Ruiz, L., Sykorova, I. & Valentine, ...
    ... samples. Locality Age Maceral composition Klobuk T L>V>I Župa T L>>V>I Necvijeće J I>L>V Avtovac J V>>L>I Bogdašići K Bit+Lam Pridvorci K Bit+Lam Todorići K Bit+Lam>>V+I M. Gruda K Bit Bugovina K Bit+Lam>>V+I Čepelica K Bit Kljen E V>>I>L Gacko M V>>I>L Table 3 Qualitative description of maceral composition ...

  • Investigating distant effects of the Moesian promontory: Brittle tectonics along the western boundary of the Getic unit (East Serbia)

    Ana Mladenović, Milorad D. Antić, Branislav Trivić, Vladica Cvetković (2019)
    In this study, we report evidence for brittle deformation in a part of the Carpatho–Balkan orogen, which is explained in terms of effects of the rigid Moesian promontory of the European plate on fault kinematics in East Serbia. We focus on the westernmost part of the Getic Unit of the East Serbian Carpatho–Balkanides, i.e. the Gornjak–Ravanica Unit, located between two main thrusts that were repeatedly activated from Early Cretaceous to recent times. We combine a new data set on ...
    Getikum, Mezijska jedinica, Karpato-balkanski orogen, krte deformacije, Gornjačko-ravanička jedinica

  • A survey of greenhouse gases production in central European lignites

    Anna Pytlak, Anna Szafranek-Nakonieczna, Weronika Goraj, Izabela Śnieżyńska, Aleksandra Krążała, Artur Banach, Ivica Ristović, Mirosław Słowakiewicz, Zofia Stępniewska (2021)
    Lignit, Gasovi sa efektom staklene bašte, Ugljen dioksid, Metan, Azotni oksid
    ... concentration. Soil Biol. Biochem. 36, 687–699. https://doi.org/10.1016/j.soilbio.2004.01.004. Kholod, N., Evans, M., Pilcher, R.C., Roshchanka, V., Ruiz, F., Coté, M., Collings, R., 2020. Global methane emissions from coal mining to continue growing evenwith declining coal production. J. Clean. Prod ...
    ... Kazan, Russia f Department of Biochemistry and Environmental Chemistry, The John Paul II Catholic, University of Lublin, Konstantynów 1 I, 20-708 Lublin, Poland H I G H L I G H T S • The GWP of the gases released by xylitic lignite was the lowest among the sam- ples. • Extraction of the detritic lignite ...
    ... from the aban- doned mines. • Detritic lignites show the potential to serve as a source of coalbed methane. G R A P H I C A L A B S T R A C T a b s t r a c ta r t i c l e i n f o Article history: Received 2 May 2021 Received in revised form 2 August 2021 Accepted 5 August 2021 Available online ...

  • The subthermal potential of karstic groundwater of Kučaj–Beljanica region in Serbia estimated by the multivariate analysis

    Ljiljana Vasić, Dragana Ž. Živojinovic, Vladana Rajaković-Ognjanović, Huang Fen, Cao Jianhua (2021)
    Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • Natural two-dimensional pyrophyllite: Nanoscale lubricant, electrical insulator and easily-machinable material

    Borislav Vasić, Radoš Gajić, Ivana Milošević, Žarko Medić, Marina Blagojev, Marko Opačić, Aleksandar Kremenović, Dejan Lazić (2022)
    Pyrophyllite, with the chemical formula Al2Si4O10(OH)2, is a naturally occurring and abundant van der Waals mineral belonging to the group of phyllosilicates. It is very soft, layered crystal used for sculpting and an excellent electrical and thermal insulator aimed for the operation at high pressure and temperature. Here, for the first time, two-dimensional (2D) pyrophyllite obtained by both mechanical and liquid phase exfoliation is presented and investigated at the nanoscale. The layered structure provides low friction coefficient of around ...
    Atomic force microscopy, Insulating properties, Nanofriction and wear, Natural two dimensional materials, Phyllosilicates, Pyrophyllite

  • Adsorption and degradation of some psychiatric drugs by sol-gel synthesized titania-based photocatalysts: influence of tungsten and sodium content

    Nina L. Finčur, Maja J. Šćepanović, Mirjana Grujić-Brojčin, Biljana F. Abramović, Jugoslav B. Krstić, Aleksandar Kremenović, Tatjana Srećković, Aleksandar Golubović (2019)
    Mesoporous anatase nanopowders were doped with 0.05−0.5 mol% of W6, in order to obtain more efficient photocatalyst than TiO2 Degussa P25 in the degradation of amitriptyline (AMI) under simulated solar irradiation (SSI). Dominant XRPD peaks were ascribed to anatase phase, with additional peaks which could correspond to brookite, TiO2 bronze and sodium titanate, Na2Ti9O19. The Raman scattering measurements have confirmed anatase as dominant phase, with broad Raman feature at ~270 cm−1 possibly related to Ti–O–Na stretching vibration. All W-doped ...
    Sol-gel synthesis, Doped titania nanopowders, XRPD, Raman spectroscopy, Adsorption and photocatalytic degradation, Psychiatric drugs

  • Rock slope stability analysis under Hoek–Brown failure criterion with different flow rules

    Svetlana Melentijević, Zoran Berisavljević, Dušan Berisavljević, Claudio Olalla Marañón (2024)
    The stability analysis of homogeneous rock slope following the Hoek–Brown failure criterion under the hypothesis of different flow rules is performed based on limit equilibrium and finite element methods. The applied failure criterion is the generalized Hoek–Brown that can be introduced as a shear/normal function in analysis applying different flow rules. The results are compared with those obtained by the application of equivalent shear strength parameters of the Mohr–Coulomb criterion, considering that this is still the most widely used ...
    Kružna klizna površ, Huk-Braunov kriterijum loma, Kriterijum popuštanja, Smičuća/normalna funkcija, Nivo napona, Verovatnoća i parametarska analiza

  • Supstitucione reakcije Pd(II) kompleksa sa biološki važnim biomolekulima

    Aleksandar M. Mijatović, Jovana Bogojeski (2017)
    Kompleksi Pd(II), supstitucione reakcije

  • Површинско распадање керсантита из Тешића мајдана у корелацији са начином обраде на примеру малог степеништа (Београдска тврђава)

    Невенка Новаковић (2024)
    Архитектуру Београда на прелазу 19. у 20. век обележила је употреба керсантита из каменолома Тешића мајдана. Kao камен високих декоративних својстава, керсантит је коришћен за јавне споменике, делове или потпуну изградњу објеката (Народна скупштина Србије, Мало степениште, Народни музеј и др.). Како очување споменика културе изискује познавање својстава уграђеног камена, истраживања су обухватила детаљно проучавање петролошких, хемијских и физичких карактеристика керсантита из Тешића мајданa и узорака камена из споменика Мало степениште (студија случаја). Након детаљног мапирања стања керсантита, лабораторијских ...
    керсантит, Мало степениште, споменик културе, архитектонски камен, физичко-хемијско распадање, мапирање, форме распадања, површинска обрада

  • Model inteligentnog sistema adaptivnog upravljanja procesom prerade rude

    Ivana M. Jovanović (2016-01-13)
    U oblasti procesa prerade rude, flotacijska koncentracija predstavlja jednu od najznačajnijih i najčešće primenjivanih metoda separacije korisnih od nekorisnih minerala. Samim tim, veoma je važno osigurati uspešan rad flotacijskog postrojenja kroz dostizanje zadovoljavajućih tehno-ekonomskih pokazatelja. Cilj upravljanja procesom flotacijske koncentracije je upravo optimizacija kvaliteta i iskorišćenja korisne komponente u koncentratu uz maksimizaciju profita. Shodno tome, istraživanja na polju modelovanja i upravljanja ovim procesom zauzimaju značajno mesto u praksi kontolnog inženjenringa.Teorijska istraživanja u okviru doktorske disertacije obuhvatila su analizu položaja ...
    flotacijska koncentracija, modelovanje, upravljanje, inteligentni sistem, soft kompjuting, fazi logika, veštačke neuronske mreže
    ... Moolmanu i saradnicima višeslojni perceptron u formi autoasocijativne neuronske mreže predstavlja pogodno sredstvo za ekstrakciju statističkih karakteristika iz slika flotacijske pene [Moolman et al. (1995b)]. Estrada-Ruiz i Pérez-Garibay su predložili metodu za procenu srednjeg prečnika i raspodele ...
    ... na površini mineralizovane pene (flotacija sfalerita), koja se takođe zasnivala na primeni višeslojnog perceptrona [Estrada-Ruiz and Pérez-Garibay (2009)]. Ipak, Aldrich i saradnici tvrde da višeslojni perceptroni, uprkos popularnosti, nemaju veliku primenu u ekstrakciji svojstava iz slika flotacijske ...
    ... design, modeling and optimization of novel flotation columns for phosphate beneficiation. Volume I. FIPR Project No. 95-02-111, Florida Institute of Phosphate Research, USA, 203 p. 64. Estrada-Ruiz, R.H., Pérez-Garibay, R., 2009. Neural networks to estimate bubble diameter and bubble size distribution ...

  • 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
    ... fold belts. Philos. Trans. R. Soc. Lond. A 283, 281–288. Roldán, F.J., Galindo-Zaldívar, J., Ruano, P., Chalouan, A., Pedrera, A., Ahmamou, M., Ruiz-Costán, A., Sanz de Galdeano, C., Benmakhlouf, M., López-Garrido, A.C., Anahnah, F., González-Castillo, L., 2014. Basin evolution associated to ...
    ... Wetzel, A., Peytcheva, I., von Quadt, A., 2016a. Alpine thermal events in the central Serbo–Macedonian Massif (southeastern Serbia). Int. J. Earth Sci. 105, 1485–1505. Antić, M., Peytcheva, I., von Quadt, A., Kounov, A., Trivić, B., Serafimovski, T., Tasev, G., Gerdjikov, I., Wetzel, A., 2016b. ...
    ... Belgrade, Faculty of Mining and Geology, Belgrade, Serbia c Natural History Museum Vienna, Geological-Paleontological Department, Austria A R T I C L E I N F O Keywords: Orogenic building Oroclines Multi-directional extension Strike-slip Serbian Carpathians A B S T R A C T Highly curved ...

  • Integrated Stratigraphy of the Middle–Upper Jurassic of the Krížna Nappe, Tatra Mountains

    Renata Jach, Nevenka Đerić, Špela Goričan, Daniela Reháková (2014)
    carbon and oxygen isotopes, radiolarians, calcareous dinoflagellates, radiolarites, Krížna Nappe, West ern Carpathians, Tethys
    ... Magura Basin ieni i i g Pieniny Klippen Belt š Fatricum E||E successions o Hi Hi j| Š š s||g 5 -- d 9| |= « = Fj L.] T| |O EBE :NEHIJE Š o e |«\«| s |s F1 _ i | ) | o |ž e||š Fs 14 N |s|ae |s Š s||- -i o o |a| z IG F a || Fd -i = ::- Fj Š „ -i a KEŠO sž F| 8 - [} H| -i s Š ž ašadećE Zoačšasš ...
    ... facies) from the Subtatric succession of the Tatra Mts (West- ern Carpathians). Studia Geologica Polonica, 121: 51—79. Navarro, V., Molina, J. M. & Ruiz-Ortiz, P. A., 2009. Filament lumachelle on top of Middle Jurassic oolite limestones: event deposits marking the drowning of a Tethysian carbonate ...
    ... yaguwaianiai n Bositra-crinoidal limestones - @ Early Bathonian positive Š"C shift m grey nodularlimestones i Q) Uate Bajocian negative Š"C shift spotted limestones: # Early B. i i c i A cherty limestones @ y Bajocian poajtiyar 07G aXcupslon & · spotted limestones and marls % Fig.15. Summary ...

  • Efikasnost različitih tipova glina Srbije za adsorpciju metilen plavog

    Maja D. Milošević (2016-12-09)
    Adsorpciona efikasnost različitih uzoraka glina sa lokaliteta Srbije određenaje njihovim tretiranjem različitim koncentracijama rastvora metilen plavog (MP).Detaljna mineraloška karakterizacija ispitivanih glina i rezultati njihove interakcijesa rastvorima MP dobijeni su primenom optičkih, rendgenskih, hemijskih, DTA ispektroskopskih metoda.Na osnovu formiranja MP agregata u izmenljivim pozicijama i površiničestica gline, razlikuju se dva tipa glinovitih minerala: visoko naelektrisani(smektiti) i nisko naelektrisani (kaoliniti). Dimeri se stvaraju na naelektrisanimpovršinama, a granica njihovog razvoja omogućuje determinaciju mineralne vrste.Molekuli MP stoje pod uglom od 21.5o kada se ...
    minerali glina, metilen plavo, kristali metilen plavog, difuznarefleksija, adsorpcija, flokulacija, naelektrisanje slojeva
    ... smektitsko-ilitskog sastava i nosiće oznake smec-ill.SC i smec-ill.SV. Uzorak K je kaolinitska glina sa većim sadržajem ilita i nosiće oznaku kaol-ill.K. Uzorci M1, M2 i M3 su pretežno ilitskog sastava sa znatnim sadržajem kaolinita i nosiće oznake ill- kaol.M1, ill-kaol.M2 i ill-kaol.M3. Uzorak C je k ...
    ... nijansama sa zelenom kao završnom nijansom. Na I. C. I. (x, y) dijagramima i pri tabelarnom prikazu zapaža se razlika u boji u zavisnosti od procentualne zapunjenosti KKI i od pravca upadnog ugla svetlosti (slika 44). 67 Slika 44. I. C. I. (x, y) dijagrami uzoraka nakon zasićenja sa MP ...
    ... rastvorom u prvom a i a24h stadijumu pokazuju ekstremno dobru i veoma dobru stabilnost suspenzije. U stadujumu b i b24h dolazi do značajnijih promena pH suspenzija što dovodi i do pada zeta potencijala sa -83.8 ka -65.6 mV. Suspenzije su i dalje u okvirima dobre stabilnosti. Stadijum c i c24h odlikuje ...

  • Tektono-termalna evolucija kontakta Dinarida i Karpato-Balkanida u području Jastrepca

    Dalibor Erak (2019)
    Predmet istraživanja doktorske disertacije je tektonska evolucija područja planine Jastrebac u centralnoj Srbiji, gde višefazna tektonska aktivnost od mezozoika do danas komplikuje rekonstrukciju strukturnih odnosa i geološke evolucije ovog prostora. Kompleksna višefazna evolucija planine Jastrebac u Srbiji je demonstrirana kombinovanjem kinematskih podataka prikupljenih na terenu i mikrostrukturnih opservacija sa dodatnim termohronološkim podacima “fission track” i podacima odredbe starosti metodom U-Pb na cirkonima. Gornjokredna ekshumacija bila je praćena gornjokredno-eocenskim navlačenjem i magmatizmom vezanim za kontinentalnu koliziju, pri čemu je akreciona ...
    kinematika, termohronologija, ekstenzioni detačmenti, Dinaridi, Karpato-Balkanidi
    ... tako i van nje na razumevanju i podršci tokom izrade doktorske disertacije. Veliko hvala mojoj majci, bratu i sestrama na bezgraničnom razumevanju i podršci. Na kraju veliko hvala mojoj Katarini na pomoći pri proveri i sređivanju finalnog teksta, a posebno na iskrenoj podršci, strpljenju i razumevanju ...
    ... Milošu Radonjiću sam zahvalan na prijateljstvu, kolegijalnosti, podršci i pomoći tokom terenskih, fakultetskih i laboratorijskih aktivnosti. Zahvalan sam Milu Đuriću na iskrenoj prijateljskoj i kolegijalnoj podršci, kao i za pomoć i sugestije pri finalnom sređivanju teksta doktorske disertacije. ...
    ... područja suture Dinarida i Karpato-balkanida. Kabinetske metode su uključivale pregled dosadašnjih proučavanja istraživanog prostora i detaljnu analizu dostupne literature vezane za problematiku i idejna rešenja geološke građe, kao i odnosa među različitim litološkim i tektonskim jedinicama, u ...

  • Mineral Resources of Serbia: Environmental, Societal and Economic Challenges

    Vladimir Simić, Rade Jelenković, Dragana Životić (2019)
    ... Originally include. I P Chlordane Originally include. I P Dieldrin Originally include. I P Endrin Originally include, I P Heptachlor Originally include, I P Hexachlorobenzene Originally include. TandIH |P Mirex Originally include. I P Toxaphene Originally include. I P Polychlorinated ...
    ... include. I P Hexachlorocyclohexanes Originally include. Tand II P Hexabromobiphenyl Originally include. I IP Polycyclic aromatic hydrocarbons (PAHs) Originally include, III U Pentabromodiphenyl ether Recognized I IP Octabromodiphenyl ether Recognized I IP Pentachlorobenzene Recognized I P,IP ...
    ... conducted. The trials have shown that triticale can replace corn in diets with little effect on swine and poultry performance (Myer et al., 1990; Ruiz et al., 1987). Hexaploid triticale, including its primary and secondary forms, is an important forage crop and a promising energy plant. Primary ...