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Упит dcterms_subject_txt:General Materials Science

841 items

  • The correlation of Upper Miocene lithostratigraphic units of the southern part of the Pannonian basin

    Filip Anđelković, Dejan Radivojević (2019)
    gornji miocen, litostratigrafske jedinice, formacije, Panonski basen
    ... Symmetry during the syn- and post-rift evolution of extensional back-arc basins: The role of inherited orogenic structures. Earth and Planetary Science Letters. 462, pp 86-98 3. Ivanišević, S., & Radivojević, D., (2018). Upper Miocene depositional environments of Kikinda-Mokrin High (Serbia). I ...

  • Geology of the southern part of the Sava-Vardar zone: new constraints from the Klepa Mts.

    Dejan Prelević, Ana Mladenović, Violeta Gajić, Milena Dunčić, Blažo Boev (2024)
    Tethys closure, Scaglia Rossa, intracontinental basalts
    ... basalt was most likely emplaced during an active tectonic phase of transpression/transtension. ACKNOWLEDGEMENT This research is financed by the Science Fund of Serbia, project, RECON · TETHYS (7744807). REFERENCES 1. Prelević, D., Wehrheim, S., Reutter, M., Romer, R. L., Boev, B., Božović, M ...

  • Reconstruction of the Tethys' waning in the Balkans: New insights from Upper Cretaceous igneous formations and zircon provenance data

    Dejan Prelević, Kristijan Sokol, Ana Mladenović, Violeta Gajić, Vladica Cvetković (2024)
    geochronology, zircon, provenance
    ... absence further cast challenge the notion of a vast Sava (Tethys) Ocean during the Cretaceous. ACKNOWLEDGEMENT This research is financed by the Science Fund of Serbia, project RECON TETHYS (7744807). REFERENCES 1. Prelević, D., Wehrheim, S., Reutter, M., Romer, R. L., Boev, B., Božović, M. . ...

  • Upper Cretaceous scaglia type limestone from Klepa Mts. (North Macedonia) - sedimentology and biostratigraphy

    Violeta Gajić, Milena Dunčić, Ana Mladenović, Dejan Prelević (2024)
    The research area is located in the central part of North Macedonia, in the area of the Klepa Mts. Based on sedimentological, micropaleontological and biostratigraphical investigations of samples from both the east and west side of the Klepa Mts., sedimentary rocks of the Upper Creaceous age are determined. During the latest Cretaceous, this area was dominated by the sedimentation of dominantly carbonate rocks with variable amounts of clastic components. From the tectonic point of view, investigated area belongs to the ...

  • Comparative analysis of correlation coefficients in mineralogical and geophysical data from the mine tailing site “Rudnik” (Serbia)

    Vesna Cvetkov, Filip Arnaut, Dragana Životić (2024)

  • 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
    ... titrations in aqueous 0.1 M NaClO4 at 298 K in concentration ratios of 1:1, 1:2, and 2:1 (metal:- ligand). The composition of the species of the general formula MpHqLr (where M = [Ru(trpy)(bpy)H2O] 2?, HL = 50-GMP or L-His) was calculated using the computer program Hyperquad 2006 [50]. The formation ...
    ... wavelength intervals. 1496 A. M. Mijatović et al. 123 Data treatment The species formed in the studied systems were charac- terized by the general equilibrium: pM þ qH þ rL ¼ MpHqLr; bp;q;r ðM ¼ Ru trpyð Þ bpyð ÞH2O½ �2þ; HL ¼ 50 � GMPH or L� HisHÞ ð5Þ and the corresponding constants are given ...
    ... of the ligand. In this study, the convention has been adopted whereby a complex containing a metal ion, M, proton, H, and ligand, L, takes the general formula MpHqLr, where p, q, and r are the stoichiometric indices of the components in the complex. A negative value for q refers to proton removal ...

  • Towards Automatic Definition Extraction for Serbian

    Ranka Stanković, Cvetana Krstev, Rada Stijović, Mirjana Gočanin, Mihailo Škorić (2021)
    U radu su prikazani preliminarni rezultati automatske ekstrakcije kandidata za definicije rečnika iz nestrukturiranih tekstova na srpskom jeziku u cilju ubrzanja razvoja rečnika. Definicije u rečniku Srpske akademije nauka i umetnosti (SANU) korišćene su za modelovanje različitih tipova definicija (opisnih, gramatičkih, referentnih i sinonimskih) koje imaju različite sintaksičke i leksičke karakteristike. Korpus istraživanja sastoji se od 61.213 definicija imenica, koje su analizirane korišćenjem morfoloških e-rečnika i lokalnih gramatika implementiranih kao pretvarači konačnih stanja u paketu za obradu korpusa otvorenog ...
    ... school; history domain is represented by four primary school textbooks; computer science is represented by one primary school textbook and tree high school ones, while physics is represented by one primary school textbook. General technique is represented by three textbooks for professional/vocational technical ...
    ... -оћа, -ина, etc. first a general definition is given in the form: osobina, stanje ili svojstvo (an attribute, a state or a feature) онога који је (of one who is) / онога што је (which is), followed by the adjective from which the abstract noun was derived. This general definition may occasionally ...
    ... a basic activity of language, of particular importance to linguists because of its use of language to describe itself. He described the subset of general language used in definition sentences and the development of a taxonomy of definition types, a grammar of definition sentences and parsing software ...

  • 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

  • Mitigating hydrate formation in onshore gas wells: A case study on optimization techniques and prevention

    Milica Ješić, Bojan Martinović, Stefan Stančić, Miroslav Crnogorac, Dušan Danilović (2023)
    Gas wells, particularly those situated onshore, play a vital role in the global energy sector by supplying a significant portion of natural gas. However, operational challenges, notably gas hydrate formation, pose substantial issues, leading to complications such as flowline blockages and unexpected well shutdowns. Gas hydrates, crystalline structures resembling ice, ...
    Gas Well, Gas Hydrate Formation, Well Modeling, Well Performance Optimization, Choke Position Adjustments, Methanol Injection

  • 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
    ... Network. Arabian Journal for Science and Engineering 38 (5), pp.1011–1023 205. Nakhaei, F., Mosavi, M.R., Sam, A., 2013b. Recovery and grade prediction of pilot plant flotation column concentrate by a hybrid neural genetic algorithm. International Journal of Mining Science and Technology 23, pp. 69–77 ...
    ... International Conference on Environment Science and Engineering IPCBEE, Vol.8, (2011) IACSIT Press, Singapore, pp. 81-85 299. Xiaoping, Y., Aldrich, C., 2013. Optimizing control of coal flotation by neuro-immune algorithm. International Journal of Mining Science and Technology 23 pp. 407–413 300. ...
    ... Hirajima, T., Oshima, K., Tsunekawa, M., Otsuka, Y., Kubo, S., Imai, T., 1996. Fuzzy Control of Column Flotation at Toyoha Mines. Journal- Mining and Materials Processing Institute of Japan 112 (3) pp. 161–166 105. Hodouin, D., Flament, F., Bazin, C., 1993. Predictive control of flotation plants. In: Emerging ...

  • 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
    ... mountain (Sirogojno, SW Serbia). Facies 58,95—111. Nakaseko K. & Nishimura A. 1979: Upper Triassic Radiolaria from Southwest Japan. Science Reports — College of General Educa- tion, Osaka University 28, 2, 61—109. Obradović J. & Goričan Š. 1988: Siliceous deposits in Yugoslavia: Occurrences, Types ...
    ... research was suppor- ted by Ministry of Education, Science and Technological Development of the Republic of Serbia, Project ON-176015 (NDJ, MS, DJ). The cooperation Leoben-Belgrade was sup- ported by the CEEPUS Network CIII-RO-0038 Earth-Science Studies in Central and South-Eastern Europe. The ...
    ... 1, 75—110. De Wever P., Dumitrica P., Caulet J.P.. Nigrini C. & Caridroit M. 2001: Radiolarians in the sedimentary record. Gordon & Breach Science Publication, 1—533. Dimitrijević M.D. 1982: Dinarides: an outline of tectonics. Karfn 'Evolution Sciences 2, 4-23. Dimitrijević M.D. 1997: Geology ...

  • Proširivanje upita zasnovano na leksičkim resursima

    Ranka Stanković, Ivan Obradović, Cvetana Krstev (2009)
    U radu je opisano kako se leksički resursi za srpski jezik i softverski alati, razvijeni u okviru Grupe za jezičke tehnologije Univerziteta u Beogradu, mogu koristiti za unapređenje postavljanja upita. Rezultati pretrage mogu biti značajno unapređeni korišćenjem različitih leksičkih resursa, kakvi su morfološki rečnici i semantičke mreže. Izloženi pristup može se iskoristiti i u Sistemu naučnih, tehnoloških i poslovnih informacija, jer je efikasno pretraživanje ovog dragocenog resursa, imajući u vidu njegovu heterogenost i obim, kao i preovladavajući tekstualni sadržaj, ...
    ... povezuju sa drugim sinsetima. Prva mreža reči za engleski jezik pod nazivom Prinstonski wordnet (PWN) razvijena je 1985. godine u Cognitive Science Laboratory Prinstonskog univerziteta (Fellbaum, 1998). EuroWordNet (EWN) je bio projekat u okviru koga su pored mreže reči za engleski razvijene ...
    ... Piperidis, V. Karakaletsis (eds.), pp. 97-104. [2] Tufiş, D. (ed.). (2004) Special Issue on BalkaNet Project, Romanian Journal on Information Science and Technology, Bucureşti, Publishing house of the Romanian academy. [3] Vitas D., Krstev C. (2007), „Extending Serbian E dictionary by the ...

  • GIS Application Improvement with Multilingual Lexical and Terminological Resources

    Ranka Stanković, Ivan Obradović, Olivera Kitanović (2010)
    ... information for the map reader. Annotation may identify or describe a specific map entity, provide general information about an area on the map, or supply information about the map itself. In general, the placement of descriptive text, or label, onto or next to features on a map is known as labelling ...
    ... Developement in Computer Science and Engeneering, ed. Grigori Sidorov, Centro Innovacion y Desarrollo Tecnologico en Computo, Instututo Politecnico Nacional, Mexico, pp. 14-20. Tufiş, D. (ed.), (2004). Special Issue on BalkaNet Project, Romanian Journal on Information Science and Technology. Bucureşti: ...
    ... different labelling properties for features within the same layer. For example, in a layer of geologic units, the user might label those with a general type of geologic composition, genesis, morphology term, geologic process, metamorphic grade etc. Development of GeolISSTerm and its integration ...

  • Indeksi kontrole održavanja i korišćenja rotornog bagera

    Jovana Mitrović, Predrag Jovančić, Dragan Ignjatović, Stevan Đenadić, Filip Miletić (2023)
    Razvoj površinske eksploatacije se u velikom stepenu zasniva na svestranoj mehanizaciji rudarskih radova. Kako bi se zadovoljili potrebni kapaciteti, neophodna je primena savremene mehanizacije, velikih kapaciteta i pouzdanosti u radu. Naime, sa stepenom povećanja mehanizovanosti radova smanjuje se broj zaposlenih radnika, povećava produktivnost rada, smanjuju troškovi po jedinici proizvoda, a samim tim i povećava ekonomičnost površinske eksploatacije. Predmet istraživanja su rotorni bageri SRs 1200 koji predstavljaju samohodne mašine kontinuiranog dejstva namenjene za otkopavanje jalovine i korisne supstance na površinskim ...
    rudarstvo, rotorni bager, indeksi održavanja, indeksi korišćenja, TOPSIS

  • Numerical modelling of the roughly simultaneous emplacement of two distinct ophiolite belts

    Nikola Stanković, Vesna Cvetkov, Vladica Cvetković (2024)

  • Arhitektonsko-građevinski kamen Crne Gore, stanje i potencijali

    Darko Božović, Vladimir Simić (2023)
    arhitektonsko-građevinski kamen, rezerve, kvalitet, potencijalnost

  • Electronic Dictionaries - from File System to lemon Based Lexical Database

    Ranka Stanković, Cvetana Krstev, Biljana Lazić, Mihailo Škorić (2018)
    In this paper we discuss some well-known morphological descriptions used in various projects and applications (most notably MULTEXT-East and Unitex) and illustrate the encountered problems on Serbian. We have spotted four groups of problems: the lack of a value for an existing category, the lack of a category, the interdependence of values and categories lacking some description, and the lack of a support for some types of categories. At the same time, various descriptions often describe exactly the same ...
    ... can be useful in bringing complementary lexical resources together within a single framework. 2. Related work In order to develop a concrete and general model of dic- tionaries, it is essential to distinguish between the formal model itself and the encoding or database schema that may ultimately ...
    ... many years now (Vitas et al., 1993) (Krstev, Cvetana and Vitas, Duško, 2015). They cover gen- eral lexica, proper names (persons and toponyms), general knowledge (famous or fictitious persons, places and orga- nizations), and domain terminology. For practical reasons they are kept in a number of ...
    ... approach applied to produce and connect derived entries, and then the approach to connect lexical variants. Establishing derivation relation is, in general, far from sim- ple. So far, we have dealt with possessive adjectives derived from surnames, leaving other cases – diminutives, augmen- tatives, ...

  • Resource-based WordNet Augmentation and Enrichment

    Ranka Stanković, Miljana Mladenović, Ivan Obradović, Marko Vitas, Cvetana Krstev (2018)
    In this paper we present an approach to support production of synsets for SerbianWordNet(SerWN)byadjustingPrincetonWordNet(PWN)synsetsusing several bilingual English-Serbian resources. PWN synset definitions were automatically translated and post-edited, if needed, while candidate literals for Serbian synsets were obtained automatically from a list of translational equivalents compiled form bilingual resources. Preliminary results obtained from a setof1248selectedPWNsynsetsshowthattheproducedSerbiansynsetscontain 4024 literals, out of which 2278 were offered by the system we present in this paper, whereas experts added the remaining 1746. Approximately one half of ...
    WordNet, bilingual resources, term alignment, parallel lists
    ... INFOtheca, 12(1):49a–63a. Tufis, D., Cristea, D., and Stamou, S. (2004). Balkanet: Aims, methods, results and perspectives. a general overview. Romanian Journal of Information science and technology, 7(1-2):9–43. Vintar, Š. and Fišer, D. (2017). Enriching Slovene wordnet with domain-specific terms. Annotation ...
    ... produce SerWN synsets on basis of PWN and to support multilingual queries in English and Serbian. The structure of bilingual parallel lists has in general the following form: TermI[,TermI]*; TermII[,TermII]* where TermI represents a word in one language, and TermII a corresponding word in another. A ...
    ... literals from non-adjusted PWN synsets, while the last column shows the corresponding percentage. It comes as no surprise that the Parallel list, as a general-domain lexicon has a considerably higher percentage than domain-specific resources. However, when it comes to particular domains, aligned terms from ...

  • Definition of groundwater genesis and circulation conditions of the complex hydrogeological karst system Mlava–Belosavac–Belosavac-2 (eastern Serbia)

    Ljiljana Vasić, Saša Milanović, Zoran Stevanović, Laszlo Palcsu (2020)
    Geochemistry and Petrology

  • Uticaj raspadanja na stabilnost kosina u mekoj stenskoj masi

    Anđela Despotov (2024)
    U radu je opisano ponašanje mekih stenskih masa koje su izložene porecesu raspadanja tokom određenog vremenskog perioda. Meke stenske predstavljaju kritične vrste stenskih masa pošto izazivaju različite probleme tokom izvođenja građevinskih radova. Meke stene mogu biti sedimentne stene, raspadnute metamorfne i magmatske stene. Odlikuju se niskim vrednostima čvrstoće, visokom deformabilnošću, visokom plastičnošću, podložne su dezintegraciji i fizičko-hemijskom raspadanju, odnosno ubrzanom dejstvu površinskog raspadanja usled atmosferskih uticaja.Za klasifikaciju mekih stenskih masa koriste se modifikovane verzije već postojećih klasifikacionih sistema. Jedan ...
    meke stenske mase, dezintegracija, klasifikacioni sistemi, Slake durability test
    ... of Split, Croatia 12. Dempsey, C., (2020) Physical and Chemical Weathirng of Rocks, Geomorphology 13. Deo, P., (1972), Shales as Embankment Materials, PhD Thesis, Purdue University 14. Franklin, J.A., Chandra, R., (1972), The slake-durability test. Rock Mechanics Ltd. Bracknell, Berks. UK ...
    ... techniques. 29. Warren et al. (2018), WRMR classification of rock mass 30. Wood LE, Deo P (1975), A suggested system for classifying shale materials for embankments. Bulletin Association Engineering Geologists 12(1): 39-55. 31. https://en.wikipedia.org/wiki/Weathering 37 O0pasau 1 H3JABA ...
    ... News Journal, 2, 4-16 17. Hoek, E., Brown, E.T., (1997) Practical Estimates of Rock Mass Strength, International Journal Rock Mechanics Mining Science, 34, 1165-1186. 18. Hoek E., Brown E.T., (1980) Underground Excavations in Rock. London: Institution of Mining and Metallurgy 527 p, London 19 ...