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Упит dcterms_subject_txt:Inorganic Chemistry,General Chemistry

550 items

  • Using English Baits to Catch Serbian Multi-Word Terminology

    Cvetana Krstev, Branislava Šandrih, Ranka Stanković (2018)
    In this paper we present the first results in bilingual terminology extraction. The hypothesis of our approach is that if for a source language domain terminology exists as well as a domain aligned corpus for a source and a target language, then it is possible to extract the terminology for a target language. Our approach relies on several resources and tools: aligned domain texts, domain terminology for a source language, a terminology extractor for a target language, and a ...
    aligned texts, word alignment, terminology extraction, electronic dictionaries, morphological inflection
    ... semantically, prag- matically, and/or statistically idiosyncratic (Baldwin and Kim, 2010). MWTs are domain-specific MWEs. nominal MWEs in the Serbian general e-dictionary of MWEs has one of 13 different structures (having 2, 3 or 4 components) (Stankovic et al., 2016). Under these presuppositions we are ...
    ... it is possible to compile the bilingual aligned termi- nological list. 2. Related Work In recent years extraction of bilingual MWTs, and MWEs in general, from bilingual aligned corpora has been ex- ploited by many researchers. Although most of them rely on automatic word alignment they differ both in ...
    ... resources. (a) Serbian Wordnet (SWN) (Cvetana Krstev, 2013) that is aligned to the Princeton WordNet (PWN)9 and (b) a bilingual list con- taining general lexica with 10,551 English/Serbian entries. The production of the bilingual list of inflected forms was done in several steps: 1. First we compiled ...

  • Arsenic in tape waters of the south Pannonian basin (Serbia) and arsenic risk assessment

    Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)
    ... Assessment of the Risk Incurred through Drinking Water The main source of arsenic exposure for the general population is the ingestion of drinking water with high lev- els of arsenic [25, 26]. Inorganic arsenic, which is exten- sively metabolized in humans into even more toxic methy- lated arsenicals ...
    ... as oxygen, chlorine, and sulfur. This combination is referred to as inorganic arsenic. Arsenic combined with carbon and hydrogen is referred to as organic arsenic. The organic forms are usually non-toxic or less toxic than the inorganic forms. The two most com- mon non-toxic forms of organic arsenic are ...
    ... [27]. The chronic exposure of humans through consumption of high levels of inorganic arsenic-contami- nated drinking water is associated with skin lesions, periph- eral vascular disease, hypertension, and cancers [28]. Inorganic arsenic has been determined to be a human car- cinogen based on epidemiological ...

  • Pokazatelji recentne tektonske aktivnosti u speleološkim objektima Dževrinske grede (istočna Srbija)

    Ana Mladenović, Jelena Ćalić (2022)
    Sistem Timočkog raseda predstavljen je sistemom desnih transkurentnih raseda generalnog pružanja sever – jug, koji su bili aktivni u periodu oligocena i miocena u okviru Karpato-balkanskog orogena. Početak njihove aktivnosti vezuje se za rotaciju tektonskih jedinica Karpato-balkanida (Dacia Mega Unit) oko rigidne Mezijske jedinice. Aktivnost ovih transkurentnih raseda je akomodirala ovu rotaciju, pa se smatra da je kumulativno kretanje duž Timočkog raseda tokom perioda njegove aktivnosti bilo do 100 km. Usled kompleksnih tektonskih rotacija, rasedi ovog sistema doveli su ...
    Тимочки расед, Џеврински расед, Балта расед, спелеолошки објекат

  • 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
    ... В. (1983) Экспериментальные методы в механохимии твердых неорганических веществ. Наука, Новосибирск. Boldyrev V.V. (1987) Mechanochemistry of inorganic solids. Thermochim Acta 110: 303–317. Болдырев В.В. и Аввакумов Е.Г. (1971) Механохимия твердых неорганических веществ. Успехи химии 10: 1835–1856 ...
    ... Vyazovkin S. and Wight C.A. (1997) Kinetics in solids. Annu Rev Phys Chem 48: 125-149. Gadsden Ј.А. (1975) Infrared Spectra of minerals and related inorganic compounds. Butterworth & Co Publishers Ltd, U.S.A. Gascoyne, M. (1986) Evidence for the stability of the potential nuclear waste host sphene ...
    ... Reviews in mineralogy 27, Mineralogical Society of America, Washington, D.C. 516. Obeti R., Smith D.C., Rossi G. and Caucia F. (1991) The crystal-chemistry of high-aluminium titanites. Eur J Mineral 3: 777-792. Oleg Vasylkiv O., Sakka Y. and Skorokhod V.V. (2007) Nano-explosion synthesis of mu ...

  • 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
    ... В. (1983) Экспериментальные методы в механохимии твердых неорганических веществ. Наука, Новосибирск. Boldyrev V.V. (1987) Mechanochemistry of inorganic solids. Thermochim Acta 110: 303–317. Болдырев В.В. и Аввакумов Е.Г. (1971) Механохимия твердых неорганических веществ. Успехи химии 10: 1835–1856 ...
    ... Vyazovkin S. and Wight C.A. (1997) Kinetics in solids. Annu Rev Phys Chem 48: 125-149. Gadsden Ј.А. (1975) Infrared Spectra of minerals and related inorganic compounds. Butterworth & Co Publishers Ltd, U.S.A. Gascoyne, M. (1986) Evidence for the stability of the potential nuclear waste host sphene ...
    ... Reviews in mineralogy 27, Mineralogical Society of America, Washington, D.C. 516. Obeti R., Smith D.C., Rossi G. and Caucia F. (1991) The crystal-chemistry of high-aluminium titanites. Eur J Mineral 3: 777-792. Oleg Vasylkiv O., Sakka Y. and Skorokhod V.V. (2007) Nano-explosion synthesis of mu ...

  • Threshold-induced correlations in the Random Field Ising Model

    Sanja Janićević, Dragutin Jovković, Lasse Laurson, Đorđe Spasojević (2018)
    Multidisciplinary
    ... b V b b D T V ( / ; , ) ( ; , ), ( / ; , ) ( ; , ) (15) T x w T T x w T end th 1 end th ini th 1 ini th end end ini ini �e foregoing general predictions can be tested in the case of any response signal for which can be expected that the assumptions, used in their derivation, are reasonably ...
    ... BoA) = 6" Dep (Tints Vins )> (14) Dy, (Tonal; O° Vi» bSX) bY Dy (Tena Vins ¥)> Dy,,(TinilBs B*Vy BOX) = BY 'Dz, (Tins Vin )- (15) The foregoing general predictions can be tested in the case of any response signal for which can be expected that the assumptions, used in their derivation, are reasonably ...
    ... scaling predictions obtained for the previously studied crack-line propagation model30,32 also hold in the case of RFIM signals, suggesting their general validity in accordance with the scaling hypothesis and derived scaling forms proposed in the previous section. In our analysis we have also identi�ed ...

  • Medical Domain Document Classification via Extraction of Taxonomy Concepts from MeSH Ontology

    Mihailo Škorić, Mauro Dragoni (2019)
    This paper is a result of a task that was presented to attendants of Keyword Search in Big Linked Data summer school, that was organized by Vienna University of Technology, under the Keystone COST action in the summer of 2017. It presents a specific approach to the classification via creation of minimal document surrogates based on the US National medical library’s MeSH ontology, which is derived from the Medical Subject Headings thesaurus. In a series of previously classified medically ...
    document classification, MeSH, ontology, information extraction
    ... and the second block 055 is unique among the sibling nodes (Figure 2). 1.2 Classification introduction The problem of classifying documents in general occurs in two variants: clas- sification in a well-known, restricted domain of classes, and in an unknown one. For both, the problem is reduced to ...
    ... the documents subject to clas- sification, resulting in two test sets. The control method was to replace the identifiers with their class, a more general hierarchical designation. The ex- perimental method also considered the length of the identifiers, so they were replaced by a certain number of iterations ...
    ... is necessary for each document to be assigned an identifier, so if a document does not have an identifier assigned, it is assigned one of the most general – H02.403 – which designates medicine. When a sequence of identifiers in each document is reduced to one class, it is taken as a result of the cl ...

  • The Usage of Various Lexical Resources and Tools to Improve the Performance of Web Search Engines

    Krstev Cvetana, Stanković Ranka, Vitas Duško, Obradović Ivan (2008)
    In this paper we present how resources and tools developed within the Human Language Technology Group at the University of Belgrade can be used for tuning queries before submitting them to a web search engine. We argue that the selection of words chosen for a query, which are of paramount importance for the quality of results obtained by the query, can be substantially improved by using various lexical resources, such as morphological dictionaries and wordnets. These dictionaries enable semantic ...
    LR web services, MultiWord Expressions & Collocations, Information Extraction, Information Retrieval
    ... seemingly resolve this problem. However, the expansion of the set of words describing a concept in a query, although contributing to the recall in general, has and adverse effect. Namely, due to the fact that many words are homonymous or polysemous, adding new words to the query might reduce precision ...
    ... nedelja ‘horrible week’ or ‘horrible Sunday’ are obtained as well. 2. Typical problems when retrieving documents using a web search engine 1. In general, when the concept the query relates to is lexicalized by one or more multi-word terms in a highly inflective language, the search engines are faced ...
    ... contains 117,000 lemmas which yields the production of approximately 1,400,000 different lexical words. More than 85,000 simple lemmas belong to general lexica, while the remaining 32,000 lemmas represent various kinds of simple proper names. The Serbian morphological dictionary of compounds contains ...

  • Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of “Podbracan”

    Aleksandar Milutinović, Aleksandar Ganić, Thamer Rayes Diyab, Rade Tokalić, Meri Ganić (2015)
    ... structures The open pit is of a deep type with 10m high levels, with 8m-10m wide bed- ding planes, the angle of inclination of slopes 55°-65° and a general end slope of 33°. Bauxite is being excavated up to the �ooring so that the stope slope is milder in the northwestern part and there are roads ...
    ... standard deviations for given dimensions and adopted standard deviations of dimensions to be set out, and in accordance with (1), by implementing the General Law on the Propagation of Errors (Chandra, 2005), the variance-covariance matrix for standard deviations of coordinate differences was established: ...
    ... deviations for measuring the instrument height and the altitude of signal of σ i = σ l = ± 0.01m. In accordance with (8), and by implementing the General Law on Propagation of Variances (Wolf & Ghilani, 1997), standard deviations for elevation differences are to be calculated as follows: 2222 2 ...

  • Application of the Fuzzy Model in the Evaluation and Selection of Hydraulic Excavators on Open-Pit Lignite Mine

    Stevan Đenadić, Miloš Tanasijević, Vladimir Milisavljević, Dragan Ignjatović, Predrag Jovančić (2021)
    The production of lignite in large open-pit mines is mainly performed with continuously operating equipment, where bucket-wheel excavators, bucket-chain excavators, belt conveyors, and spreaders are the basic machines. Smaller machines, usually of discontinuous operating nature, are commonly categorized as auxiliary machines. This paper presents the research related to the analysis of auxiliary machine parameters with the case study for a hydraulic excavator. The purpose of the analysis was to develop a model of rating quality of service of the ...
    Fuzzy theory, hydraulic excavator, selection, quality of service, asset management

  • Geotechnical Conditions for Construction of Savski Trg Metro Station as a Part of the Belgrade Metro Line One

    Nemanja Stanic, Dragoslav Rakic, Josip Isek, Slavoljub Simic (2024)
    In order to solve serious traffic congestion in Belgrade, a number of studies regarding the Belgrade Metro construction have been carried out since 1973. However, only in 2019, the routes of the future metro lines 1 and 2 were de-fined as a part of the General Metro Construction Project. The lines are de-signed to intersect at the location of Sava Square, where an interchange met-ro station will be built. It represents a complex geotechnical structure consist-ing of three different ...
    metro station, geotechnical modelling, displacements

  • Pannonian Basin, Pannonian Basin System and Pannonian realm - three different concepts

    Dejan Radivojević (2019)
    Centralni Paratetis, neogen, Panonski basen, Sistem panonskog basena, Panonska oblast
    ... dynamic area that, in the short geological period, has passed through continental, marine, lacustrine and again continental depositional stage. In general, it can be said that the initial phase of the accommodation space formation that will later occupy the Pannonian Basin corresponds to the paleo ...

  • Mineralogical and physicochemical characterization of bentonite clay from Svrljig, Serbia

    Maja Milošević, Bojan Kostić (2022)
    ... Student Conference. Krakow Poland. Milošević, M., Logar, M. 2014. Smectite clays of Serbia and their application in adsorption of organic dyes. EGU General Assembly 16, EGU2014-1882-1. The 22nd Congress of the Carpathian-Balkan Geological Association (CBGA) will be held from 7 to 11 September 2022 ...

  • Минерагенија зеолитских туфова Србије

    Vladan Kašić (2018-02-05)
    Лежишта наших зеолитских туфова (Златокоп, Игрош, Јабланица 1, Беочин, Топоница и Сланци) која су овде била предмет детаљних истраживања, просторно и генетски везана су за вулканске и вулканокластичне стене маринских средина сенонске и неогенске старости и језерске седименте неогене старости и настала су као продукт девитрификације вулканског стакла.Током лабораторијских испитивања при изради ове докторске дисертације, примењене су следеће аналитичке методе: оптичка испитивања петрографских препарата; рендгенска дифракција праха (XRD); скенирајућа електронска микроскопија (СЕМ метода); хемијска карактеризација зеолитских туфова у оквиру ...
    минерагенија, зеолитски туф, Србија, клиноптилолит, хојландит
    ... Report No. H90-8, New Mexico Institute of Mining and Technology, Soccoro, NM. Huggerty G.M., Bowman R.S., (1994): Sorption of chromate and other inorganic anions by organo-zeolite, Environ. Sci. Technol., 28, 3, 452-458. Castaldi P., Santona L., Cozza C., Giuliano V., Abbruzzese C., Melis P., (2004): ...
    ... Napoli, 363-371. Garvey R. (1986): LSUCRIPC - Least Squares Unit Cell Renfinment with Indexing on the Personal Computer -MS(PC)-DOS, Department of Chemistry, North Dakota State University Gvozdić D., Stojić V., Šamanc H., Fratrić N., Daković A., (2008): Apparent efficiency of immunoglobulin absorption ...
    ... after interaction with Sr 2+ cations in aqueous solution using nuclear and surface analytical techniques, Journal of Radioanalytical and Nuclear Chemistry, 241, 519-527. Ouki K.S., Kavannagh M., (1997): Performance of Natural Zeolites for the Treatment of Mixed Metal-Contaminated Effluents, Waste ...

  • Some models for determination of parameters of the soil oscillation law during blasting operations

    Suzana Lutovac, Dragan Medenica, Branko Gluščević, Rade Tokalić, Čedomir Beljić (2018)
    ... carried out during mass mining in the Kovilovača Open Pit near Despotovac. 4.1. Experimental Investigation in the VelikiKrivelj Open Pit 4.1.1. General Characteristics of the Work Environment in the Veliki Krivelj Open Pit In the Veliki Krivelj Open Pit we performed experimental investigations on ...
    ... boreholes was 0.5 s, which led to ten explosions and appropriate soil oscillation velocities. The explosive used was powdered ammonium nitrate for general purposes (Amoneks-I, manufactured by Trayal Corporation AD, Kruševac, Serbia). The holes were arranged in a single line while one cartridge of explosive ...
    ... carried out for the purpose of exploitation of mineral deposits. Measurements were carried out in the Kovilovača Open Pit near Despotovac. 4.2.1. General Characteristics of the Kovilovača Open Pit Kovilovača limestone deposits have an exceptionally simple geological structure. Limestone deposits of ...

  • BEYOND 2020 - Geology explorations and open pit activities affectation in reclamation designing in Kolubara Coal Mines (KCM) Serbia, new considerations

    Bojan Dimitrijević, Bogoljub Vučković, Radmila Gaćina (2023)
    Geology explorations in KCM runs from 1936. year up to these days and still ongoing. Results in >7,200 drill holes with ≈600,000 m of core drilling and gave lignite ore resources of > 4,1Bt, which 1,15Bt are excavated since 1986. of XIX up to early years of XXI century. For further mining operations in open pits stay 1,5Bt of lignite. Under waste heaps are ≈80 km2, additional 85 km2 should be filled. All of that masses/areas were, are ...

  • Asbestos-Based Pottery from Corsica: The First Fiber-Reinforced Ceramic Matrix Composite

    Philippe Colomban, Aleksandar Kremenović (2020)
    Asbestos-containing pottery shards collected in the northeast of Corsica (Cap Corse) and dating from the 19th century, or earlier, have been analyzed by SEM-EDS, XRPD, FTIR and Raman microspectroscopy. Blue (crocidolite) and white (chrysotile) asbestos fiber bundles are observed in cross-sections. Most of the asbestos is partly or totally dehydroxylated, and some transformation to forsterite is observed to occur, indicative of a firing above 800 C. Examination of freshly fractured pieces shows a nonbrittle fracture with fiber pull-out, consistent with ...
    asbestos, CMC, Corsica, fiber, pottery
    ... Asbestos Amphiboles. Minerals 2018, 8, 413. [CrossRef] Yang, H.-X.; Evans, B.W. X-ray structure refinements of tremolite at 140 and 295 K: Crystal chemistry and petrologic implications. Am. Mineral. 1996, 81, 1117–1125. [CrossRef] Gatta, D.G.; Merlini, M.; Valdrč, G.; Liermann, H.-P.; Nenert, G.; Rothkirch ...

  • Valorization of non-balanced coal reserves in Serbia for underground coal gasification

    David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić (2019)
    In the name of a better and safer energy future, it is our responsibility to focus our knowledge and activities to save on imported liquid and gas fossil fuels, as well as coal on which energy security of Serbia is based. The rationalization in the use of available energy resources certainly positively affects economy and the environment of a country. This paper indicates motivations for the application of the underground coal gasification process, as well as surface gasification for ...
    ugalj, gasifikacija, zaštita životne sredine, skladištenje, solarna
    ... already been contaminated during some of the processes, are exposed to further pollution in their cir- culation. Pollutants are all organic, inorganic and similar substances, or components that are in natural or artificial conditions brought into the underground aquifer, or they are continuously ...
    ... borehole help to avoid possible problematic geo- logical structures of the coal bed, as well as coal roof and coal fioor. Coal gasification chemistry includes Gasification cavity shape seven primary reactions occurring within the with CRIP layer. The primary reaction that happens is the di ...

  • Review: Methodological approaches and research techniques for addressing construction and remediation problems in karst reservoirs

    Saša Milanović, Ljiljana Vasić (2021)
    Earth and Planetary Sciences (miscellaneous), Water Science and Technology

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

    Vesna Cvetkov, Filip Arnaut, Dragana Životić (2024)