Претрага

Упит dcterms_creator_txt:Papazachos C.B., G.N. Tsokas, I.N. Tziavos, Vasiljević Ivana, Stampolidis A.

1665 items

  • ‘Blue-’ and ‘Brown-speckled’ pottery from Qalhât, the Sultanate of Oman (13–16th centuries): Comparison with traditional Omani 19–20 century productions

    Liliana Gianni, Hélène Renel, Aleksandar Kremenović, Philippe Colomban (2020)
    Representative ‘Blue speckled’ (13–16th centuries) and ‘Brown speckled’ (13–21st century) wares recovered from the excavations in Qalhât or collected around Bahlâ city (Sultanate of Oman) were characterized by XRPD, SEM-EDS, Raman/optical microspectroscopy, and thermal expansion. Minerals present in the body (quartz, augite and albite as major phases, calcite, dolomite, rutile, anatase, phosphate, hematite and magnetite as minor phases) were identified by XRPD and/or Raman spectroscopy. SEM-EDXS microanalysis was performed on the glazes in order to compare their composition, especially ...
    Firing, Glaze, Traditional ceramics, Provenance studies, Augite

  • A Description of Morphological Features of Serbian: a Revision using Feature System Declaration

    Cvetana Krstev, Ranka Stanković, Vitas Duško (2010)
    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 ...
    Morphology, Lexicon, lexical database, Standards for LRs

  • Gate Road Support Deformation Forecasting Based on Multivariate Singular Spectrum Analysis and Fuzzy Time Series

    Luka Crnogorac, Rade Tokalić, Zoran Gligorić, Aleksandar Milutinović, Suzana Lutovac, Aleksandar Ganić (2021)
    Underground mining engineers and planners in our country are faced with extremely difficult working conditions and a continuous shortage of money. Production disruptions are frequent and can sometimes last more than a week. During this time, gate road support is additionally exposed to rock stress and the result is its progressive deformation and the loss of functionality of gate roads. In such an environment, it is necessary to develop a low-cost methodology to maintain a gate road support system. ...
    deformacije podgrade, lasersko skeniranje, višekanalna singularna spektralna analiza, prognoza, klasterisanje fuzzy vremenskih serija

  • The influence of Al3+ ion on porcine pepsin activity in vitro

    Vesna M. Pavelkić, Kristina R. Gopčević, Danijela Z. Krstić, Marija A. Ilić (2008)
    pepsin, aluminijum, kinetika, aktivacija, elektroforetska mobilnost

  • Keyword Extraction from Parallel Abstracts of Scientific Publications

    Slobodan Beliga, Olivera Kitanović, Ranka Stanković, Sanda Martinčić-Ipšić (2017)

  • Infotheca (Q25460443) in Wikidata

    Ranka Stanković, Lazar Davidović (2021)
    Vikipodaci su baza znanja Zadužbine Vikimedija koja predstavlja zajednički izvor različitih vrsta podataka koje koriste ne samo drugi Vikipedijini projekti, već sve više i brojne aplikacije semantičkog veba. U ovom radu ćemo prezentovati primer integracije Vikipodataka sa digitalnim bibliotekama i eksternim sistemima, kao i mogućnost ubrzanja pripreme i unosa podataka na primeru radova iz časopisa za digitalnu humanistiku Infoteka.
    semantički veb,otvoreni povezani podaci, vikpodaci,Infoteka, metapodaci časopisa

  • Multiphase evolution of fluids in the Rudnik hydrothermal-skarn deposit (Serbia): new constraints from study of quartz-hosted fluid inclusions

    Stefan Petrović, Ronald J. Bakker, Vladica Cvetković, Rade Jelenković (2024)
    This study presents and discusses first detailed petrographic, microthermometric and Raman spectroscopic data from quartzhosted fluid inclusions at Rudnik Zn-Pb-Cu-Ag skarn deposit (Serbia) and combines them with the information on skarnand ore paragenesis. Three periods in the metamorphic-hydrothermal history of the deposit are recognized: 1) the pre-ore prograde skarn period when garnet-clinopyroxene skarns formed, 2) the syn-ore period that encompasses a retrograde stage marked by epidote and zoisite and a quartz-sulfide stage characterized by quartz, pyrrhotite, sphalerite, galena and ...
    skarnovska ležišta, rudnik, fludine inkluzije, srpska kenozojska magmatska provincija, Zapadno Tetisjki metalogenetski pojas
    ... compared to group A, but remains a CO»-rich gas mixture from Group A (Fig. 8a), corresponding to a moderate salinity. — (Fig.O9c,g). Some inclusions (type PRb) reveal the presence The vapour phase is slightly enriched in CH, (up to I0 mol%) | ·„of minor amounts of additional H,S. Group A and B fluid ...
    ... karn deposit (Serbia): new... 25 a b EJ || isothermal mixing < , bolmg A e Dqq Z F“ ___ 20 - e %gđ/ -e – —a 0. -- cooling « —— » heating %Q\ . _ ~ t·{_c y a = bolling: “ \ O - . [5] suface: NR N NI3 “ ~ & 15- fud alution Ž . .“ OE z isothermal mixing A e= “ : NN NB E e ž (\3'> , P LA j| ...
    ... by group A inclusions that contain mainly a H,O-NaCI mix- ture with minor amounts of CO, and traces of CH,. Group B inclusions record a dilution of the original fluid at nearly constant temperatures, with a slight increase in CH, con- tents. Subsequently, the system was infiltrated by a fluid ...

  • Barkhausen noise in disordered striplike ferromagnets: Experiment versus simulations

    Đordje Spasojević, Miloš Marinković, Dragutin Jovković, Sanja Janićević, Lasse Laurson, Antonije Đorđević (2024)
    fluktuacije i šum, neuređeni sistemi, magnetna merenja, Izingov model sa slučajnim poljem
    ... 800 R, a nanocrystalline iron-based material with an excellent combination of soft and magnetic properties, making it a cutting-edge material for a wide range of applications. Given that the Barkhausen noise emissions emerging along a hysteresis curve are stochastic and depend in general on a variety ...
    ... ~ -300 0 300 600 E H(A/m 400 | - —. mHz/0.sto* •, — ı mHz/1x10% 200 | - 2 mwa/2-o% 0 aggg — e a saasazss -9 0 % H(A/m) FIG. 13. Comparison of averaged magnetization and magnetic susceptibility curves obtaine. ı 20000 - = o = 15000 J O a 6b 100001 __H(A/m) •|—5 mHz/5x10% •*|—10 ...
    ... performed a systematic analysis of the signal properties and magnetization avalanches comparing the outcomes of the numerical model and experiments carried out in a two-decade-wide range of the external magnetic field driving rates. Our results reveal that with a suitable choice of parameters, a considerable ...

  • Sustainable Modularity Approach to Facilities Development Based on Geothermal Energy Potential

    Nataša Čuković-Ignjatović, Ana Vranješ, Dušan Ignjatović, Dejan Milenić, Olivera Krunić (2021)
    The study presented in this paper assessed the multidisciplinary approach of geothermal potential in the area of the most southeastern part of the Pannonian basin, focused on resources utilization. This study aims to present a method for the cascade use of geothermal energy as a source of thermal energy for space heating and cooling and as a resource for balneological purposes. Two particular sites were selected—one in a natural environment; the other within a small settlement. Geothermal resources come ...
    геотермална енергија, Панонски басен, геотермална каскада, енергетска ефикасност, бањски центри, балнеологија, биоклиматска архитектура, стратегије пасивног дизајнирања, модуларни објекти

  • Photocatalytic Activity of the V2O5 Catalyst toward Selected Pharmaceuticals and Their Mixture: Influence of the Molecular Structure on the Efficiency of the Process

    Sanja J. Armaković, Aleksandra Jovanoski Kostić, Andrijana Bilić, Maria M. Savanović, Nataša Tomić, Aleksandar Kremenović, Maja Šćepanović, Mirjana Grujić-Brojčin, Jovana Ćirković, Stevan Armaković (2023)
    Due to the inability of conventional wastewater treatment procedures to remove organic pharmaceutical pollutants, active pharmaceutical components remain in wastewater and even reach tap water. In terms of pharmaceutical pollutants, the scientific community focuses on -blockers due to their extensive (over)usage and moderately high solubility. In this study, the photocatalytic activity of V2O5 was investigated through the degradation of nadolol (NAD), pindolol (PIN), metoprolol (MET), and their mixture under ultraviolet (UV) irradiation in water. For the preparation of V2O5, facile ...
    DFT analysis, metoprolol, nadolol, nanomaterial characterization, photocatalysis, pindolol, β-blocker
    ... Figure 5. These modes are unambiguously assigned to o-V>Os structure [30,31]: ~104(A„), 146(Bye / Bae), 198 (A„/Bx»), 285 (Biy / Bae), 306 (A), 406 (Ay), 483 (A„), 528 (A„), 701 (Biy/ B»g), and 995 cm_! (Ae). A good agreement of the position of the Raman mode at 995 cm ! with corresponding bulk ...
    ... sample, Figure 2. Refined unit cell parameter values (a = 11.506 (2), b = 4.3708 (6), c = 3.5627 (4) A,V = 179.17 (4) A9) are in good agreement with reference values reported in upper mentioned PDF card (a = 11.5100, b = 4.3690, c = 3.5630 A, V = 179.173 A3). The significant presence of an amorphous ...
    ... with the absence of ~840 cm ! mode in the spectra of the catalyst, reveals a good crystallinity of the V>»Os phase [30—32]. A broad feature at ~1020 cm !1 may be ascribed to surface VOx species on V>Os [33]. R a m a n in te ns it y 100 200 300 400 500 600 700 800 900 1000 1100 1200 Raman ...

  • A Tel Platform Blending Academic And Entrepreneurial Knowledge

    Ivan Obradović, Ranka Stanković, Jelena Prodanović, Olivera Kitanović (2013)

  • A Fuzzy Expert Model for Availability Evaluation

    Dejan Ivezić, Miloš Tanasijević, Predrag Jovančić, Radiša Đurić (2019)
    Each technical system within itself carries the great potential danger of possible occurrence of failure and damages. Mining machines are characteristic by great investment values, costs of unplanned shutdowns, complex working conditions, and environment and workers hazards. Systematic monitoring of the mining machinery is of great importance for the management of the mining companies. Availability is the overall concept of quality of service. Includes information regard to operating state, an idle state, a standby state and shut down. The ...
    raspoloživost, ekspertski sistem, fazi teorija, buldozeri

  • Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae

    Hans Peter Nytoft, Geir Kildahl-Andersen, Sofie Lindström, Frode Rise, Achim Bechtel, Danica Mitrović, Nataša Đoković, Dragana Životić, Ksenija A. Stojanović (2019)
    Two previously unidentified dehydroabietane isomers were isolated from Miocene Serbian lignite and Rhaetian (Late Triassic) coaly mudstones from South Sweden and characterized using NMRspectroscopy as cis- and trans-dehydroicetexane. Both have a 9(10?20)-abeo-abietane or icetexane skeleton, consisting of a 6-7-6 tricyclic framework with seven carbons in ring B instead of the usual six in common diterpanes of the abietane-type. Dehydroicetexanes can be detected using GC-MS-MS in m/z 270?146 chromatograms without interference from dehydroabietane or other isomers. Dehydroicetexanes are often abundant ...
    Geochemistry and Petrology
    ... 1.14 (a-H), m 1.74 (b-H), d*, 12.8 26.00 1.14 (a-H), m 0.71 (b-H), m 2 22.27 1.49 (2H), m 22.49 1.42 (2H), m 3 42.52 1.24 (a-H), m 1.33 (b-H), m 33.96 1.03 (a-H), m 1.19 (b-H), m 4 34.18 – 33.43 – 5 56.95 1.12, m 52.1 1.46, m 6 28.38 2.12 (a-H), dd*, 8.0, 13.5 1.05 (b-H), m 23.51 1.90 (a-H), m ...
    ... addition, a trisubstituted benzene ring was identified. It was apparent from HMBC data that the methyl groups belonged to two different geminal pairs. One pair gave long-range correla- tions to one quaternary carbon, a methylene and a methine, whereas the other pair correlated to a methine and a substituted ...
    ... 38.83 1.40 (a-H), ddd*, 2.8, 13.4, 13.4 2.27 (b-H), dddd, 1.5, 3.4, 3.4, 12.6 2 19.32 1.60 (a-H), m 1.75 (b-H), m 3 41.72 1.21 (a-H), m 1.47 (b-H), dddd, 1.6, 3.3, 3.3, 13.2 4 33.43 – 5 50.41 1.35, dd, 2.3, 12.5 6 19.10 1.87 (a-H), dddd, 2.1, 2.1, 7.5, 13.3 1.70 (b-H), m 7 30.49 2.86 (a-H), m 2.92 ...

  • Mineral and Thermal Waters of Serbia: Multivariate Statistical Approach to Hydrochemical Characterization

    Maja Todorović, Jana Štrbački, Marina Ćuk, Jakov Andrijašević, Jovana Šišović, Petar Papić (2016)
    ... was marked with a high natural α-radioactivity. Cerska slatina was slightly acidic with a pH of 6.74 and with a HCO3–Na, Ca wa- ter type, originating from an aquifer in granitoid rocks. A high content of radium isotope was found in the spring water (226Ra: 2.56±0.09 Bq/L) and a low concen- tration ...
    ... chlo- rides (3.75 %) and sulphates (1.25 %). Hierarchical cluster analysis A regional hydrogeochemical study is a multivariate problem because of a large number of chemical parameters (variables) associated with a large number of sampling sites (observations). Although multivariate statistical ...
    ... the more dilute waters. Here, a Phenon line with a linkage distance of 5 was chosen, which led to 6 clusters (C1–C6). Fig. 2. (a) The Dendrogram showing the six clusters; (b) The Stiff diagrams showing the average compositions of each cluster. 7 For a clearer presentation of the results ...

  • Хазард од клизишта у Србији у 21. веку

    Biljana Abolmasov (2019)
    клизишта, хазард од клизишта, промене климе

  • The influence of Al<sup>3+</sup>ion on porcine pepsin activity<i>in vitro</i>

    Vesna M. Pavelkić, Kristina R. Gopcević, Danijela Z. Krstić, Marija A. Ilić (2008)
    The in vitro effect of Al3þ ions in the concentration range 1.7·1026M–8.7·1023M on pepsin activity at pH 2, via kinetic parameters and its electrophoretic mobility was evaluated. Kinetic study demonstrated the existence of an activation effect of Al3þ at pH 2 on pepsin molecule. Kinetic analysis with respect to concentrations of haemoglobin showed that Al3þ ions increase the maximal velocity (Vmax) and kcat values rather than apparent affinity for substrate (KS) implying the non-competitive nature of activation which indicated ...
    Пепсин, алуминијум, кинетика, активација, електрофоретска мобилност
    ... removal of 44 amino acids, from its amino terminus, to give a single chain enzyme with a low pl and three disulfide bridges. Each lobe of pepsin contains a catalytic aspartic acid residue Asp?? and Porcine pepsin A (EC 3.4.23.1), a prominent member of the aspartic protease, is the principal ...
    ... decreased in a dose dependent manner (Figure 5 B). Figures 5 A and B shows only UV spectra in a presence ofIO0mM AP?. IR studies. IR spectra of pepsin and haemoglobin in KBr matrices in absence (solid curve 1) and in a presence 1IOmM Al ions (dotted curve 2) are presented in Figures 6 A and B. ...
    ... slope or intercept), (I/A) against 1 / [Al3+], where A is defined as slope or intercept in the absence of activator (Al' + ions) minus that in its presence. (1,5, 10mM) and intensity of characteristic peaks have been decreased in a dose dependent manner (Figure 5 A). However, the presence of ...

  • Pleistocene rhinoceros from Bogovina Cave: the first report of Stephanorhinus hundsheimensis Toula, 1902 (Mammalia, Rhinocerotidae) from Serbia

    Predrag Radović, Miloš Radonjić, Emmanuel Billia (2020)
    Finds of Pleistocene rhinoceros are rare in Serbia, and only one species (the woolly rhinoceros Coelodonta antiquitatis Blumenbach, 1799) has been reported so far. The current paper presents the dental material of an extinct so-called Hundsheim rhinoceros, Stephanorhinus hundsheimensis Toula, 1902 from Bogovina Cave (East ern Serbia). Both the morphological and metric characteristics of the teeth are consis tent with the attribution to S. hundsheimensis. Unfortunately, the rhinoceros material originated from an uncertain geological context, so there is no ...
    rhinoceros, Stephanorhinus hundsheimensis, Serbia

  • An intelligent hybrid system for surface coal mine safety analysis

    Nikola Lilić, Ivan Obradović, Aleksandar Cvjetić (2010)
    ... knowledge, we have resorted to a modification of this model by including a new (fourth) element, featuring the production (IF-THEN) rules related to an object in the model. Thus both the procedural and declara- tive knowledge related to a class object could be represented. Such a modified OOA model was then ...
    ... user interface and a working memory, but also a module for the interface with routines for relevant parameters determination, the Visual Basic routines themselves, and a database used by these routines (Fig. 3). The main purpose of the user interface is to provide means for a successful dialogue ...
    ... 2010 Keywords: Mining engineering Mine safety analysis Intelligent hybrid system Expert system Neural network a b s t r a c t Analysis of safety in surface coal mines represents a very complex process. Published studies on mine safety analysis are usually based on research related to accidents ...

  • A Tool for Enhanced Search of Multilingual Digital Libraries of E-journals

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Aleksandra Trtovac, Miloš Utvić (2012)
    This paper outlines the main features of Bibliša, a tool that offers various possibilities of enhancing queries submitted to large collections of TMX documents generated from aligned parallel articles residing in multilingual digital libraries of e-journals. The queries initiated by a simple or multiword keyword, in Serbian or English, can be expanded by Bibliša, both semantically and morphologically, using different supporting monolingual and multilingual resources, such as wordnets and electronic dictionaries. The tool operates within a complex system composed ...
    multilingual digital libraries, query expansion, TMX

  • Keyword-Based Search on Bilingual Digital Libraries

    Ranka Stanković, Cvetana Krstev, Duško Vitas, Nikola Vulović, Olivera Kitanović (2017)
    This paper outlines the main features of Biblisha, a tool that offers various possibilities of enhancing queries submitted to large collections of aligned parallel text residing in bilingual digital library. Biblishsa supports keyword queries as an intuitive way of specifying information needs. The keyword queries initiated, in Serbian or English, can be expanded, both semantically, morphologically and in other language, using different supporting monolingual and bilingual resources. Terminological and lexical resources are of various types, such as wordnets, electronic ...
    ... tools and translation vendors [9]. A TMX document consists of a header and a body. The header consists of metadata describing the aligned texts, while the body contains a set of transla- tion units (TU) with two or more translation unit variants (TUV), containing a same text segment in different languages ...
    ... preceded by an identification of the document it originates from which contains a link to the full text of a docu- ment form which it was extracted. Within this identification is a link to the full metadata of a retrieved document. A few concordance lines for the initial query rudnik ‘mine’ are presented in ...
    ... search. When performing monolingual search of metadata, a user can make use of a form with predefined fields for the most commonly used data: author’s name, words from an article title, year of publication, and article keywords. As a result, a list of all articles in the language of the query that fulfill ...