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Упит dcterms_subject_txt:crystal structure

445 items

  • Approach to operational mine planning: Case study Tamnava West

    Dejan Stevanović, Mirjana Banković, Milica Pešić Georgiadis, Ranka Stanković (2014)
    ... production targets and profit without investing effort in detailed excavation planning. It is especially true for deposits with complex geological structure and production technology, as is the case for many coal mines in Serbia. The majority of coal production is used for generation of electricity in ...
    ... when considering the fact that the deposits on which exploitation is carried out are often, small in size, with poor quality and with complex structure and geometry, often in locations that have unfavorable infrastructure, or in regions with significant political instability. In the vast majority ...
    ... removable parting. The Tamnava West deposit is characterized by geology that is of moderate complexity, both with respect to stratigraphy and structure. The geology was originally defined by earlier work of geologists from Tamnava West mine. The Tamnava West consists of one seam that is divided ...

  • Bridging Computational Lexicography and Corpus Linguistics: A Query Extension for OntoLex-FrAC

    Christian Chiarcos, Ranka Stanković, Maxim Ionov, Gilles Sérasset (2024)
    OntoLex, dominantni standard zajednice za mašinski čitljive leksičke resurse u kontekstu RDF-a, Linked Data i tehnologija Semantičkog veba, trenutno se proširuje sa posebnim modulom za Frekvencije, Primere i Informacije zasnovane na Korpusu (OntoLex-FrAC). Predlažemo novi komponent za OntoLex-FrAC, koji se bavi inkorporacijom korpusnih upita za (a) povezivanje rečnika sa korpusnim mašinama, (b) omogućavanje RDF baziranih web servisa da dinamički razmenjuju korpusne upite i podatke odgovora, i (c) korišćenje konvencionalnih upitačkih jezika za formalizaciju unutrašnje strukture kolokacija, skica reči i ...
    standardizacija, digitalna leksikografija, OntoLex, upiti korpusa, povezani podaci, Lingvistički povezani otvoreni podaci

  • A Knowledge-Based Approach to Mine Ventilation Planning in Yugoslav Mining Practice

    Nikola Lilić, Ivan Obradović, Ranka Stanković (2002)
    Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper, we ...
    ... expert knowledge in the mine ventilation field. In this paper, we present the design methodology of the hybrid system INVENTS, as well as system structure and user interface. 1. Introduction The methodology of mine ventilation planning and design in contemporary Yugoslav mining theory and practice ...
    ... our approach to mine ventilation planning and design where it interacts with CFD (Computational Fluid Dynamics) software. INVENTS is a complex structure composed from several integrated software packages: ResNet, SimVent and VENTEX (Fig. 3). These packages integrate both well known nu- merical o ...
    ... basic network. SimVent is a software package that enables mine ventilation simulation in un- derground exploitation of ore deposits. The global structure of the mathematical model used as the basis for SimVent is composed of the following: (i) a block for the analysis of air flow and pressure distribution ...

  • Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes

    Jelena Malenović Nikolić, Dejan Vasović , Ivana Filipović , Stevan Mušicki, Ivica Ristović (2016)
    menadžment, rudrastvo i energetski kompleksi, okruženje, održivi razvoj, mrežno planiranje
    ... 9, 1071 14 of 20 Figure 7. Illustrative part of gantographic display of branched structure of the project to improve the environmental protection system in mining and energy complexes. Branched structure of the management project (Figure 7) points to the importance of activities n28, n29, and ...
    ... and energy complexes. Figure 7. Illustrative part of gantographic display of branched structure of the project to improve the environmental protection system in mining and energy complexes. Branched structure of the management project (Figure 7) points to the importance of activities n28, n29, and ...
    ... 9, 1071 14 of 20 Figure 7. Illustrative part of gantographic display of branched structure of the project to improve the environmental protection system in mining and energy complexes. Branched structure of the management project (Figure 7) points to the importance of activities n28, n29, and ...

  • Синтеза и карактеризација керамике на бази сфена

    Jelena R. Pantić (2015-07-10)
    Механохемијска активација стехиометријске смеше реактаната TiO2, SiO2 и CaCO3 показала се као веома успешна и једноставна метода за добијање сфена (CaTiSiO5). На основу мерења релативних густина свих синтерованих узорака установљено је да максималну густину од 93,9 % имају узорци који су активирани 30 минута и синтеровани на 1200 °С. Микроструктурном анализом, тј. анализом слика синтерованих узорака активираних 30 минута, које су добијене скенирајућом електронском микроскопијом, опажа се бимодална расподела величине зрна, са просечном величином од 3 μm, односно 5 ...
    сфен, механохемија, Ритвелдова метода, оптичка спектроскопија, микроструктурна анализа, фазна трансфоpмација, чврсти раствори
    ... Miner 14: 80-93. Eick H.A., and Kihlborg L. (1966) The crystal structure of VOMoO4. Acta Chem Scand 20: 722-729. Eppler R.A. (1987) Selecting Ceramic Pigments, Am Cer Soc Bull 66: 1600- 604. Zachariasen W.H. (1930) The crystal structure of titanite. Z Kristallogr 73: 7-16. Здујић М. (2001) ...
    ... Foit F.F., Jr. (1984) The crystal structure of an Al-rich titanite from Grisons, Switzerland. Am Mineral 69: 725-732 CIE, Commission internationale de l’Eclairage proceedings 1931. (1932) Cambridge University Press, Cambridge. Collin R.L. (1951) The crystal structure of bandylite CuCl2CuB2O4·4H2O ...
    ... Calvo C. (1972) Crystal structure of βVPO5. J. Solid State Chem 5: 432-435. Gražulis S., Chateigner D., Downs R.T., Yokochi A.F.T., Quirós M., Lutterotti L., Manakova E., Butkus, J., Moeck P. and Le Bail A. (2009) Crystallography Open Database - an open-access collection of crystal structures. J ...

  • Синтеза и карактеризација керамике на бази сфена

    Jelena R. Pantić (2015-07-10)
    Механохемијска активација стехиометријске смеше реактаната TiO2, SiO2 и CaCO3 показала се као веома успешна и једноставна метода за добијање сфена (CaTiSiO5). На основу мерења релативних густина свих синтерованих узорака установљено је да максималну густину од 93,9 % имају узорци који су активирани 30 минута и синтеровани на 1200 °С. Микроструктурном анализом, тј. анализом слика синтерованих узорака активираних 30 минута, које су добијене скенирајућом електронском микроскопијом, опажа се бимодална расподела величине зрна, са просечном величином од 3 μm, односно 5 ...
    сфен, механохемија, Ритвелдова метода, оптичка спектроскопија, микроструктурна анализа, фазна трансфоpмација, чврсти раствори
    ... Miner 14: 80-93. Eick H.A., and Kihlborg L. (1966) The crystal structure of VOMoO4. Acta Chem Scand 20: 722-729. Eppler R.A. (1987) Selecting Ceramic Pigments, Am Cer Soc Bull 66: 1600- 604. Zachariasen W.H. (1930) The crystal structure of titanite. Z Kristallogr 73: 7-16. Здујић М. (2001) ...
    ... Foit F.F., Jr. (1984) The crystal structure of an Al-rich titanite from Grisons, Switzerland. Am Mineral 69: 725-732 CIE, Commission internationale de l’Eclairage proceedings 1931. (1932) Cambridge University Press, Cambridge. Collin R.L. (1951) The crystal structure of bandylite CuCl2CuB2O4·4H2O ...
    ... Calvo C. (1972) Crystal structure of βVPO5. J. Solid State Chem 5: 432-435. Gražulis S., Chateigner D., Downs R.T., Yokochi A.F.T., Quirós M., Lutterotti L., Manakova E., Butkus, J., Moeck P. and Le Bail A. (2009) Crystallography Open Database - an open-access collection of crystal structures. J ...

  • DFT study of free radical scavenging activity of erodiol

    Zoran Marković, Jelena Đorović, Milan Dekić, Milanka Radulović, Svetlana Marković, Marija Ilić (2013)
    Antioxidant activity of erodiol was examined at the M05-2X/6-311+G(d,p) level of theory in the gas and aqueous phases. The structure and energy of radicals and anions of the most stable erodiol rotamer were analyzed. To estimate antioxidant potential of erodiol, different molecular properties were examined: bond dissociation enthalpy, proton affinity together with electron transfer energy, and ionization potential followed by proton dissociation enthalpy. It was found that hydrogen atom transfer is the prevailing mechanism of erodiol behavior in gas; ...
    депсиде, еродиол, механизми за уклањање слободних радикала, БДЕ, ИП, ПА

  • 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
    ... approach by introducing an Inter- Lingual Index (ILI), used to align synsets in different languages within each cluster on basis of PWN structure. In BWN, the structure of PWN was extended to accommodate concepts specific to Balkan languages that were not found in PWN. Manual development and maintenance ...
    ... English-Slovene corpus and an online dictionary as bilingual resources to facilitate the addition of new terms to sloWNet, based on the semantic structure of the PWN. The Croatian Wordnet (CroWN) was enlarged with the WN-Toolkit and CroDeriV, a derivational database for Croatian (Oliver et al., 2015) ...
    ... we have developed (Krstev et al., 2006), to 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, ...

  • Towards resolving Cretaceous to Miocene kinematics of the Adria-Europe contact zone in reconstructions: Inferences from a structural study in a critical Dinarides area

    Uroš Stojadinović, Nemanja Krstekanić, Liviu Matenco, Tamara Bogdanović (2022)
    One key element in the current debate analysing the Central Mediterranean evolution is the Cretaceous structure and kinematics of the present-day oroclinal bent contact between Adria-and Europe-derived continental units in the Dinarides, interpreted in different tectonic reconstructions as a subduction-related thrust system or a large-scale strike-slip fault zone. We provide a solution to the debate by a structural and kinematic study in a key area located in central Serbia along the Europe–Adria orogenic suture of the Sava Zone. The ...

  • Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal

    Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović (2018)
    glukoza, fruktoza, аktivni ugalj, hidrotermalni tretman, aktivacija hidroksida, teški metali, metilen plavo
    ... activated glucose, respectively, and 6.4; 7.4 and 13.5 for LiOH, NaOH and KOH activated fructose, respectively. 2.2. Characterization Methods The crystal structure of the obtained samples was characterized by x-ray powder diffraction (XRPD) analysis using Ultima IV Rigaku diffractometer (Rigaku, The Woodlands ...
    ... Characterization 3.1.1. XRPD Analysis and Raman Spectroscopy It is known that when a substance is dissolved in water or some other solvent, its crystal structure is destroyed. That means that in the first stage of obtaining samples for this study, during the Minerals 2018, 8, 246 6 of 21 preparation ...
    ... Results obtained in this study may be summarized as: • Samples obtained from glucose pose an amorphous structure, while in samples obtained from fructose besides being amorphous, the presence of crystal phases (X2CO3 and oxides X2O) was also detected. • For precursors, glucose and fructose, the elementary ...

  • Razvoj ARCGIS geobaze površinskog kopa korišćenjem UML CASE alata

    Aleksandra Tomašević, Ljiljana Kolonja, Ivan Obradović, Ranka Stanković, Olivera Kitanović (2012)
    ... examples are objects with the same structure, behavior, relations and semantics. For example, the class Busotina represents all exploration boreholes with all the necessary data. The class diagram, as one of the basic structural diagrams, describes the system structure using classes, attributes, operations ...
    ... geodatabase development process. The first two approaches to geodatabase creation are suitable when smaller geodatabases or geodatabases of a simple structure are developed, while the third approach is used in the development of complex geodatabases with a larger number of feature and attribute classes ...
    ... operations and relations between classes. There can be several such diagrams within one geodatabase, namely, as much as needed to make its structure clear and understandable. In this paper we will present three class diagrams: IstrazniProstor, Objekti and Tehnologija. 4 Figure 2 depicts the class ...

  • BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties

    Marija Šuljagić, Ivan Petronijević, Miljana M. Mirković, Aleksandar Kremenović, Adis Džunuzović, Vladimir B. Pavlović, Aleksandra Kalezić-Glišović, Ljubica Andjelković (2023)
    To investigate the influence of spinel structure and sintering temperature on the functional properties of BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1), NiFe2O4, ZnFe2O4, and Ni0.5Zn0.5Fe2O4 were in situ prepared by thermal decomposition onto BaTiO3 surface from acetylacetonate precursors. As-prepared powders were additionally sintered at 1150 °C and 1300 °C. X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS) were used for the detailed examination of phase composition and morphology. The magnetic, dielectric, and ...
    ferroelectric, dielectric properties, magnetic properties, titanate/ferrite composites, phase composition
    ... BaTiOy / Nip ,s Znp,s Fe)Oa samples. Table 1. The phase composition of prepared composites. In parenthesis next to the phase chemical formulae crystal system and space group are presented as well as corresponding, PDF card numbers from the ICDD database. Phase abundances are calculated by the RIR ...
    ... relates to the distribution width of the relaxation time due to the non-uniform grain boundary structure of the samples [75]. In our case, non-Debye relaxation originated not only from the porous structure, but from different phases and core-shell structures” grain boundaries. Therefore, the fitting ...
    ... of Kragujevac, Svetog, Save 65, 32000 Čačak, Serbia * · Correspondence: ljubicaechem.bg.ac.rs Abstract: To investigate the influence of spinel structure and sintering temperature on the functional properties of BaTiOys /Ni„Zni _ „Fe>Ou (x = 0, 0.5, 1), NiFe)Oa, ZnFe>Oxu, and Nip,5Zno sFe>»Oa were ...

  • Structural and microstructural study of brookite based TiO2 nanocomposites with carbon black (C)

    Aleksandar Kremenović, Mirjana Grujić-Brojčin, Nataša Tomić, Maja Šćepanović (2022)
    Structural and microstructural properties of TiO2-based nanocomposites with carbon black (C), synthesized by sol-gel-hydrothermal method, have been studied by XRPD and Raman scattering. Detailed size-strain analyses of XRPD and Raman scattering results are presented in order to investigate the influence of C content on brokite and anatase phase formation. The XRPD size-strain analyses have resulted in reliable structure and microstructure results for both anatase and brookite and their relative abundance ratio has been refined by Rietveld method. The brookite ...

  • A Multilingual Evaluation Dataset for Monolingual Word Sense Alignment

    Sina Ahmadi, John P McCrae, Sanni Nimb, Fahad Khan, Monica Monachini, Bolette S Pedersen, Thierry Declerck, Tanja Wissik, Andrea Bellandi, Irene Pisani, [...] Ranka Stanković and others (2020)
    Aligning senses across resources and languages is a challenging task with beneficial applications in the field of natural language processing and electronic lexicography. In this paper, we describe our efforts in manually aligning monolingual dictionaries. The alignment is carried out at sense-level for various resources in 15 languages. Moreover, senses are annotated with possible semantic relationships such as broadness, narrowness, relatedness, and equivalence. In comparison to previous datasets for this task, this dataset covers a wide range of languages ...
    lexical semantic resources, sense alignment, lexicography, language resource
    ... by A.P. Evgenyeva, or Maliy Akademicheskiy Slo- var (Short Academic Dictionary) (Evgenyeva, 1999, MAS) were used. 3.4. Dataset structure Listing 1 presents the structure of the datasets in JSON for- mat. External keys such as meta ID and external ID will enable future lexicographers to integrate ...
    ... network structure based on lexical-semantic relations which hold between senses across synsets. The 50,000 Italian synsets contained in IWN are linked to the Princeton Wordnet. The latter re- source, SIMPLE, constitutes the semantic level of a quadri- partite Italian lexicon. Its structure is inspired ...
    ... used in the language. In addition, the structure of the re- source is in such a way that citations and further details are provided at sense-level rather than separately. 5.2. Sense alignments One of the main challenges in aligning senses are due to the structure of the senses. A resource which provides ...

  • 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 ...
    ... the present moment cover 57% of dictionary definitions, 83% of which were fully recognized. The analysis has shown that many definitions have a structure that can be modelled, as evidenced by the statistics of definitions grouped by type. These models were used to retrieve noun definitions from a 1 ...
    ... basic meanings of simple, non-derived words (which have no synonyms), and a synonymous one, which consists of words of close or the same semantic structure, when there is a near synonym of that lexeme or when that token is marked with wider uses (Gortan-Premk 2014: 131–132). Combined definitions are ...
    ... definitions in the Serbian Academy of Sciences and Arts (SASA) dictionary; this part of a dictionary entry is presented in italics. The definition structure in the SASA dictionary is informally outlined in the Guidelines for Dictionary Processing. The guidelines suggest that the descriptive definition ...

  • A contribution to the understanding of hydrochemical properties of thermomineral water on the L’dži locality (eastern part of North Macedonia)

    Hristina Petrova, Katarzyna Wątor, Piotr Rusiniak, Boris Vakanjac, Vesna Ristić Vakanjac, Ewa Kmiecik (2023)
    Regarding the aspect of mineral, thermo-mineral, and thermal waters, on the territory of the Republic of North Macedonia, there are 65 registered locations, of which 8 are categorized as spas. This includes the Kežovica spa, also known as the Štipska spa. In the vicinity of Kežovica Spa is the thermo-mineral L’Dži spring with mineralization around 1.3 g/L and the water temperature at the time of sampling was 50.1 °C. Spring L’Dži is generated by a fault structure and is ...
    thermo-mineral water, water chemistry, hydrochemical properties, L’dži locality, North Macedonia.

  • Alpine thermal events in the central Serbo-Macedonian Massif (southeastern Serbia)

    Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Andreas Wetzel, Irena Peytcheva, Albrecht von Quadt (2015)
    General Earth and Planetary Sciences

  • Insights into dike nucleation and eruption dynamics from high-resolution seismic imaging of magmatic system at the East Pacific Rise

    Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Mladen R. Nedimović, Juan Pablo Canales, Hélène D. Carton, John C. Mutter, Javier Escartín (2023)
    Multidisciplinary

  • Solid state synthesis of extra phase-pure Li4Ti5O12 spinel

    Ivana Veljković, Dejan Poleti, Ljiljana Karanović, Miodrag Zdujić, Goran Branković (2011)
    Фазно чист спинел Li4Ti5O12 са величином честица мањом од 500 nm добијен је реакцијом у чврстом стању из стехиометријске смеше наноанатаса (ТiО2) и Li2CO3 која је претходно активирана механохемијским поступком. Реакција у чврстом стању у потпуности се завршава за само 4 часа на температури од 800 ºC. Уз помоћ XRPD, SEM и TG/DSC анализе испитане су структурне и микроструктурне карактеристике добијеног спинела, механизам реакције између анатаса и Li2CO3, као и термичка стабилност Li4Ti5O12. Реакција започиње разлагањем Li2CO3 на температурама ...
    дифракција рендгенских зрака, механизам реакције, термичка стабилност, Li4Ti5O12, спинел, фазно чист узорак

  • Challenges in using wastewater heat pumps in district heating systems

    Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Boban Pavlović, Dušan Danilović, Dimitrije Manić (2022)
    Decarbonization of district heating systems requires ensuring significant amounts of renewable energy available in the proximity of the district heating network. One of the promising solutions is the utilization of purified water from wastewater treatment plants by heat pumps. However, as a heat source, wastewater treatment plants are characterized by annual variability of the flow and temperature of purified water. The consequence is the variability of recoverable heat potential. In this paper, the effect of variability is analyzed for ...
    Toplotna pumpa, Daljinsko grejanje, Postrojenje za prečišćavanje otpadnih voda