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Упит dcterms_subject_txt:intervención de pozos petroleros

489 items

  • Equilibrium and kinetic studies of the reactions between [Ru(terpy)(bipy)Cl]Cl complex and biologically important N-donor ligands

    Aleksandar Mijatović, Biljana Petrović, Ratomir Jelić, Živadin Bugarčić (2011)
    Studije u oblasti antikancerogenih karakteristika jedinjenja rutenijuma(III/II) izazivaju veliku pažnju već nekoliko godina otkako su neka od njih kao što su KP1019 (indazolijum-tetrahloridobis(H-indazol)rutenat(III)) i NAMI-A (imidazolijum) -trans-tetrahlorido(dimetilsulfoksid)indazolerutenat(III)) dostigao nivo kliničkog ispitivanja. Kompleksi rutenijuma u ​​reakciji sa molekulom DNK formiraju prvenstveno gvanin- i adenin-adukt, kao komplekse platine. Takođe, nekoliko studija ukazuje na veoma jake interakcije sa proteinima. Međutim, kompleksi Ru(III/II) pokazuju generalno manje toksične efekte od lekova platine(II).1 Proučavali smo kinetiku reakcija supstitucije kompleksa [Ru(terpi)(bipi)Cl]Cl sa biološki važnim ligandima: dimetilsulfoksidom, gvanozin-5’-monofosfatom, ...

  • 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
    ... Dyes and their intermediates. Chemical Publishing, New York, pp. 1 - 12 AFNOR. 1993. Mesure de la quantité et de l’activité de la fraction argileuse (Norme Française NF P 94-068). Association française de Normalization (ANFOR), La Défense, Paris, France Al-Ghouti M.A., Khraisheh M.A.M., Allen ...
    ... Istoimeno naelektrisanje se odbija, međutim, to može biti prevaziđeno delovanjem Van de Valsovih (eng. Van de Waals) sila. Ako je sloj naelektrisanja veliki, čestice će imati poteškoća da se približe pa Van de Valsove sile neće delovati. Čestice tada ostaju razdvojene (koloidne) u suspenziji i za ...
    ... izomorfne substitucije. Katjoni koji menjaju Al u dioktaedarskom sloju su uglavnom Mg, Fe i Zn pa su zbog toga veze u ovim slojevima veoma slabe (Van de Valsove veze). U ovu grupu spadaju montmorionit, beidelit, nontronit, hektorit i saponit. Osnovna struktura se sastoji iz dva tetraedarska sloja sa ...

  • Production of morphological dictionaries of multi-word units using a multipurpose tool

    Ranka Stanković, Ivan Obradović, Cvetana Krstev, Duško Vitas (2011)
    The development of a comprehensive morphological dictionary of multi-word units for Serbian is a very demanding task, due to the complexity of Serbian morphology. Manual production of such a dictionary proved to be extremely time-consuming. In this paper we present a procedure that automatically produces dictionary lemmas for a given list of multi-word units. To accomplish this task the procedure relies on data in e-dictionaries of Serbian simple words, which are already well developed. We also offer an evaluation ...
    electronic dictionary, Serbian, morphology, inflection, multi-word units, noun phrases, query expansion
    ... LeXimir in language processing tasks. I. INTRODUCTION MORPHOLOGICAL electronic dictionaries of Serbian for natural language processing (NLP) are being de- veloped for many years now. Their development follows the methodology and format (known as DELAS/DELAF) pre- sented for French in [1]. E-dictionaries ...
    ... multi-word compounds composed of two or more contiguous graphical words that show some degree of non- compositionality and have constant references can be de- scribed using a similar approach. The NLP community offered various approaches to lexical treatment of multi-word units (MWUs) that were analyzed ...
    ... Vitas, “Inflectional Non-compositionality and Variation of Compounds in French, Polish and Serbian, and Their Automatic Processing,” Bulag — Bulletin de Linguistique Appliquée et Générale, vol. 32, pp. 73–94, 2007. [9] A. Savary, J. Rabiega-Wisniewska, and M. Wolinski, “Inflection of Polish Multi-Word ...

  • 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
    ... (1993) Eur J Cancer 29:1873 19. Velders AH, Kooijman H, Spek AL, Haasnoot JG, de Vos D, Reedijk J (2000) Inorg Chem 39:2966 Kinetics, mechanism, and equilibrium studies of the reactions 1497 123 20. Hotze ACG, Caspers SE, de Vos D, Kooijman H, Spek AL, Flamigni A, Bacac M, Sava G, Haasnoot JG, Reedijk ...
    ... (1995) Inorg Chim Acta 231:57 14. Vilaplana R, Romero M, Quiros M, Salas J, Gonzalez-Vilches F (1995) Met-Based Drugs 2:211 15. Chatterjee D, Mitra A, De GS (2006) Platinum Met Rev 50:2 16. Alessio E, Mestroni G, Nardin G, Attia WM, Calligaris M, Sava G, Zorzet S (1988) Inorg Chem 27:4099 17. Sava G ...

  • An Italian-Serbian Sentence Aligned Parallel Literary Corpus

    Saša Moderc, Ranka Stanković, Aleksandra Tomašević, Mihailo Škorić (2023)
    This article presents the construction and relevance of an Italian-Serbian sentence-aligned parallel corpus, delving into the aligned sentences in order to facilitate effective translation between the two languages. The parallel corpus serves as a valuable resource for language experts, researchers, and language enthusiasts, fostering a deeper understanding of linguistic nuances and cultural expressions. By bridging the gap between Serbian and Italian, this corpus opens new avenues for cross-cultural communication and collaboration, and ultimately contributes to the improvement of language-related ...
    Aligned corpus, parallel corpus, Serbian, Italian, literature

  • Towards Semantic Interoperability: Parallel Corpora as Linked Data Incorporating Named Entity Linking

    Ranka Stanković, Milica Ikonić Nešić, Olja Perisic, Mihailo Škorić, Olivera Kitanović (2024)
    U radu se prikazuju rezultati istraživanja vezanih za pripremu paralelnih korpusa, fokusirajući se na transformaciju u RDF grafove koristeći NLP Interchange Format (NIF) za lingvističku anotaciju. Pružamo pregled paralelnog korpusa koji je korišćen u ovom studijskom slučaju, kao i proces označavanja delova govora, lematizacije i prepoznavanja imenovanih entiteta (NER). Zatim opisujemo povezivanje imenovanih entiteta (NEL), konverziju podataka u RDF, i uključivanje NIF anotacija. Proizvedene NIF datoteke su evaluirane kroz istraživanje triplestore-a korišćenjem SPARQL upita. Na kraju, razmatra se povezivanje Linked ...
    paralelni korpusi, povezivanje imenovanih entiteta, prepoznavanje imenovanih entiteta, NER, NEL, povezani podaci, NIF, Vikipodaci

  • Компарација метода XRF i ICP-MS на узорцима угља и продуктима сагоревања

    Бранко Костић, Ксенија Ераковић, Дејан Прелевић, Сабина Ковач, Драгана Животић (2023)
    геохемија, угаљ, продукти сагоревања, XRF, ICP-MS

  • Stepen metamorfizma metaklastita rudnika

    Vanja Ćuk (2024)
    Zadatak ovog rada je bio, potvrda saznanja da se na planini Rudnik dogodio kontaktni metamorfizam gornjokrednih sedimentnih stena i da se ispita intenzitet kontakto-metamorfnih promena. Posle kraćeg opisa geografskog položaja, pregleda ranijih istraživanja i geologije šireg područja, usmerena je pažnja na petrološka ispitivanja metaklastita i na kontaktno-metamorfne facije. Usled stvaranja različitih vulkanogenih facija odnosno usled vulkanskih erupcija, delovanjem zagrejane magme (lave) ili zagrejanih fluida, došlo je do kontaktnog metamorfizma, na granici oligocen-miocen i do stvaranja različitih metamorfnih stena, a ...
    Kontaktni metamorfizam, Rudnik, metakonglomerati, metapeščari, metaalveroliti

  • Study of the Synergetic Effect of Co-Pyrolysis of Lignite and High-Density Polyethylene Aiming to Improve Utilization of Low-Rank Coal

    Ivan Kojić, Achim Bechtel, Nikoleta Aleksić, Dragana Životić, Snežana Trifunović, Gordana Gajica, Ksenija Stojanović (2021)
    Polimeri i plastika, opšta hemija
    ... was extracted from the pulverized lignite sample using Soxhlet extraction with dichloromethane/methanol (both of HPLC grade, Carlo Erba Reagents, Val de Reuil, France) azeotrope (88:12, v:v) over 48 h. Solvent was Polymers 2021, 13, 759 4 of 25 removed by rotary vacuum evaporator. Bitumen was qua ...
    ... of the quartz tube. After cooling the pyrolytic system over night, the quartz tube was rinsed with chlo- roform (HPLC grade, Carlo Erba Reagents, Val de Reuil, France) and this extract was combined with the liquid product collected in the cold trap. Chloroform was removed by rotary vacuum evaporator. ...
    ... in a small amount of dichloromethane (the mass ratio of sample and dichloromethane was 2:1.5) and then n-heptane (HPLC grade, Carlo Erba Reagents, Val de Reuil, France) was added (mass ratio n-heptane/lignite EOM or liquid pyrolysate = 40:1). The suspension was intensively shaken and left in a dark place ...

  • 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
    ... common characteristics of unstructured information in terms of handling information that may be human-generated, textual, irregular, hierarchical, de-normalized, time-varying, and/or big. Bibliša, the tool we have built using MarkLogic is aimed for search of document collections consisting of aligned ...
    ... t environment for generating aligned parallel texts. It is basically a front-end for two alignment tools developed by LORIA (Laboratoire lorrain de recherche en informatique et ses applications), one for automatic sentence alignment of texts (Xalign, http://led.loria.fr/outils/ALIGN/align.html) ...

  • 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
    ... Cavazzoni, C.; de Gironcoli, S.; Pasquarello, A. Baroni, First-principles codes for computational crystallography in the Quantum-ESPRESSO package. Z. Krist. Cryst. Mater. 2005, 220, 574–579. [CrossRef] Giannozzi, P.; Baseggio, O.; Bonfa, P.; Brunato, D.; Car, R.; Carnimeo, I.; Cavazzoni, C.; de Gironcoli ...
    ... photocatalytic degradation of NAD, PIN, and MET and their mixture. The results of the degradation efficiency were compared with the efficiency of DE Since light absorption is an important parameter influencing the degradation efficiency, we have also analyzed the excitations within studied ph ...
    ... effect on the removal of NAD and MET rom the aqueous solution (Figure 9b). Moreover, the efficiency of the process has decreased in comparison to DE We can conclude that the turbidity of the solution resulting from he presence of nanomaterials decreased the removal efficiency of the mentioned two ...

  • Threshold-induced correlations in the Random Field Ising Model

    Sanja Janićević, Dragutin Jovković, Lasse Laurson, Đorđe Spasojević (2018)
    Multidisciplinary
    ... analysing the data from numerical simulations and show how the appearance of the correlations can be attributed to the thresholding pro- cess we used to de�ne the avalanches from the signal28–30. In the absence of correlations, the waiting times should follow the exponential distributions indicating the ...
    ... γS T/ (0) of exponent γS/T for zero threshold, which (seeming linearly) changes with disorder - see the inset of Fig. 1d. Having at hand two well de�ned values, γS T/ (0) and γS T/ (pl), one could interpret the variation of γS/T-values, presented in Fig. 1c, as a possible crossover between these ...
    ... to disorders that are above the e�ective critical disorder Rc eff pertaining to the underlying lattices33,34. For this value of disorder, precisely de�ned in the quoted references, it is likely for the spanning avalanches to occur. �e spanning avalanche is the avalanche that spans the �nite system ...

  • Природни потенцијал минералних вода Србије - Natural potential of mineral waters in Serbia

    Оливера Крунић (2021)
    минералне воде

  • 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

  • SrpELTeC: A Serbian Literary Corpus for Distant Reading

    Ranka Stanković, Cvetana Krstev, Duško Vitas (2024)
    U članku je predstavljen SrpELTeC, korpus razvijen u okviru akcije COST Distant Reading for European Literary History (CA16204). Svi romani u SrpELTeC-u su odabrani, pripremljeni i obeleženi korišćenjem zajedničkih principa uspostavljenih za sve jezičke zbirke u Evropskoj zbirci književnog teksta (ELTeC). Navedeni su izazovi i rešenja u pripremi SrpELTeC od nule. Svi romani su ručno kodirani u TEI sa bogatim metapodacima i strukturnim napomenama. Automatska anotacija je uključivala POS-označavanje, lematizaciju i imenovane entitete, oslanjajući se na resurse za obradu ...
    digital humanities, Serbian literature, text corpora, distant reading , linked data, named entity recognition, text analytics

  • Палеомагнетски резултати из Тимочког магматског комплекса, Источна Србија

    Весна Лесић, Емо Мартон, Драган Лукић, Весна Цветков (2018)
    ... праћење магнетске  сусцептибилности)  док  се магнетски  сигнал  није  изгубио. Метода  демагнетизација  која  је  дала  боље  резултате  примењена  је  за  де‐ магнетизацију остатка узорака са испитиваних локалитета.  Обрада дијаграма демагнетизације  је извршена линеарном анализом  (Kirschvink, 1980), а  ...

  • Zaštita od miniranja

    Suzana Lutovac, Miloš Gligorić (2024)
    Miniranje

  • Using technology for knowledge transfer between academia and enterprises

    Ivan Obradović, Ranka Stanković (2014)
    ... Besides Delft University the main partners within Open consortium Europe are Universidad Politécnica Madrid, Universitat de Barcelona, Katholieke Universiteit Leuven and Université de Lyon, as well as the OpenCourseWare Consortium (OCWC), Creative Commons (CC) and European Association of distance Teaching ...

  • Aлтерације перидотита контролисане карактером флуида на примеру харцбургита Рудника - Серпентинизација или талкизација?

    Стефан Петровић, Наталија Батоћанин (2020)
    У раду су приказани резултати испитивања серпентинисаних харцбургита Брђана (43°58'45.1" СГШ, 20°25'12.6" ИГД) и талкизираних харцбургита откривених у интервалу 429-559.8 m у истражној бушотини 330А/18 (44°07'33.2" СГШ, 20°30'28.5" ИГД) на Руднику. Узорци оба локалитета показују карактеристике резидуалних харцбургита из омотача, односно тектонита; лепидобластичне, бластозрнасте, или порфирокластичне структуре и масивне текстуре. Серпентинисани харцбургити и серпентинити Брђана су изграђени од серпентина, ретких реликата оливина и ортопироксена, акцесорног спинела, и веома ретког секундарног магнезита и магнетита. Најдоминантнији састојак (местимично гради и преко ...
    Рудник, Брђани, харцбургити, серпентинити, талк
    ... dr.rgf.bg.ac.rs 15 Z A P I S N I C I S R P S K O G G E O L O [ K O G D R U [ T V A za 2019. godinu COMPTES RENDUS DES SÉANCES DE LA SOCIÉTÉ SERBE DE GÉOLOGIE pour les année 2019 REPORTS OF THE SERBIAN GEOLOGICAL SOCIETY for the year 2019 Beograd, 2019. Стефан Петровић1 , Наталија ...

  • The Nooj System as Module within an Integrated Language Processing Environment

    Ranka Stanković, Duško Vitas, Cvetana Krstev (2008)
    NooJ, electronic dictionary, lexical resources
    ... Expansion Techniques for Question Answering, Massachusetts Institute of Technology (2004) Bonhomme P., Nguyen T.M.H., O'Rourke, S.: XAlign: l'aligneur de Langue & Dialogue, 2001, http://www.loria.fr/equipes/led/outils/ALIGN/align.html Courtois, B. & Silberztein, M.(eds.) Dictionnaires électroniques ...
    ... Workstation for Lexical Resources. Proc. of the Fifth International Conference LREC, Genova, Italy, May 2006 Silberztein, M. NooJ Manual, Université de Franche-Comté (2007) Tufiş, D. ed. 2004. Special Issue on BalkaNet Project, Romanian Journal on Information Science and Technology. Bucureşti: Publishing ...