Претрага
479 items
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The external aggregation Newton's method for solving nonlinear equations and applications
Marija Paunović, Dejan Ćebić, Nebojša Ralević. "The external aggregation Newton's method for solving nonlinear equations and applications" in The University Thought - Publication in Natural Sciences, Centre for Evaluation in Education and Science (CEON/CEES) (2020). https://doi.org/10.5937/univtho10-24982
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The influence of Al<sup>3+</sup>ion on porcine pepsin activity<i>in vitro</i>
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 ...... as a cofactor in the pathogenesis of Alzheimer"s disease, as well as other neurodegenera– tive pathologies. Accumulated aluminium accelerates process of aggregation of amiloyd beta peptide and causes activation of present secretases, which belong to aspartic proteases family [18-21]. Some authors ...Vesna M. Pavelkić, Kristina R. Gopcević, Danijela Z. Krstić, Marija A. Ilić. "The influence of Al3+ion on porcine pepsin activityin vitro" in Journal of Enzyme Inhibition and Medicinal Chemistry, Informa UK Limited (2008). https://doi.org/10.1080/14756360701841095
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Развој хибридног модела за оптиматизацију завршне контуре одлагалишта у површинској експлоатацији лежишта минералних сировина
Aлександар Додеровић (2024)Површинска експлоатација минералних сировина захтијева претходно откопавање значајних( милионских) количина јаловине, које је неопходно транспортовати до локације на којој ће сеона трајно одложити. Традиционални приступ избора локације и дизајна одлагалишта се карактерише парцијалним приступом, заснованом на анализи неколико водећих критеријума као и на личном искуству инжењера, често занемарујући синергетски ефекат осталих утицајних фактора Технолошке операције које се односе на манипулацију јаловином, међу којима предњачи транспорт, генеришу највећи дио трошкова у површинској експлоатацији. Такође, цјелокупан процес експлоатације додатно је ограничен ...оптимизације завршне контуре одлагалишта, хибридни модел, површинска експлоатација, генетски алгоритамAлександар Додеровић. Развој хибридног модела за оптиматизацију завршне контуре одлагалишта у површинској експлоатацији лежишта минералних сировина, Београд : [А. Додеровић], 2024
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Proračun recirkulacionih pumpi u postrojenju za odsumporavanje dimnih gasova ,,TENT B"
Tomislav Trpković (2024)Predmet ovog rada baziraće se na proračunu i usvajanju mašinskih instalacija potrebnih za nesmetano funkcionisanje sistema dve međusobno povezane celine Absorber - Pumpna stanica, preko FRP ( Fiberglass Reinforced Plastic) cevovoda kojim se odvija transport suspenzije krečnjaka neophodnog u samom procesu odsumporavanja dimnih gasova. Pored tehničkog opisa same tehnologije koja uključuje tri objekta: Absorber, Pumpna Stanica i cevovod, glavni deo rada odnosiće se na proračun i usvajanje mašinskih instalacija koji uključuju recirkulacione radijalne centrifugalne pumpe i cevovode kojima ...postrojenje za odsumporavanje dimnih gasova, termoelektrana, pumpna stanica, FRP cevovod, Absorber, transport suspenzije gipsa, prirubnica, ventil, potisni cevovod, usisni cevovod... Station, connected by FRP (Fiberglass Reinforced Plastic) pipelines that transport the gypsum suspension essential in the flue gas desulfurization process. In addition to the technical description of the technology itself, which includes three facilities: the Absorber, the Pump Station, and the pipeline ...
... The first part of the paper is introductory, explaining the terminology and the operation of the thermal power plant and the desulfurization process. The second part of the paper will discuss the location designated for the flue gas desulfurization plant and the meteorological and other parameters ...Tomislav Trpković. Proračun recirkulacionih pumpi u postrojenju za odsumporavanje dimnih gasova ,,TENT B", 2024
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Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду
... presence of dissolved lead ion. Int. J. Miner. Process., 34, 307–319. POPOV S.R., VUČINIĆ D.R., 1992: The effect of prolonged agitation in lead ion solution on ethylxanthate adsorption and surface characteristics of cerussite. Int. J. MIner. Process., 35, 85–100. Popov S.R., Vučinić D.R., 1994: ...
... Position and Role of Unit Flotation Cells in the Process of Flotation of Low Grade Pb-Zn Ore. Erzmetall, Vol. 45, no. 2, pp. 107–112. IGNJATOVIĆ M, ĆALIĆ N, MARKOVIĆ Z, IGNJATOVIĆ R., 1995: Development of a combined gravity-magnetic separation process for magnesite ore using HGMS. Magnetic and Electrical ...
... VUČINIĆ D., 1994: Kinetics of ethylxanthate adsorption on cerussite in alkaline media in presence or absence of dissolved lead ions. Int. J. Miner. Process., 41, 115–128. VUČINIĆ D., POPOV S., 1995: The effect of dissolved Cu(II) on ethylxanthate adsorption on galena and sphalerite in an alkaline medium ...главни и одговорни уредник Душан Поломчић. Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду, Београд : Универзитет у Београду, Рударско-геолошки факултет, 2016
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Soil oscillation law parameter determination with the application of Lagrange’s theorem at “Kovilovača“ open pit
... carstified [7]. During previous exploitation and exploitation works, no significant burst deformations, which would significantly influence the process of exploration and exploitation, were noted in the deposit. Only after blasting, blocks of rocks 0.50 m3 occur, which could be attributed to the ...Suzana Lutovac, Nebojša Vidanović, Čedomir Beljić, Zoran Gligorić. "Soil oscillation law parameter determination with the application of Lagrange’s theorem at “Kovilovača“ open pit" in Mining and Metallurgy Engineering Bor, Bor : Mining and Metallurgy Institute Bor (2015). https://doi.org/10.5937/MMEB1503053L
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The application of ArcGIS for assessing the potential of solar energy in urban area: The case of Vranje
In order to determine the solar energy potential for a specified location, it is crucial to consider the latitude, altitude, slope, terrain morphology, atmospheric conditions, etc. Such a complex calculation and mapping of solar energy can be done using the ArcGIS geoprocessing tool, named Area Solar Radiation (ASR). By using the ASR tool, supported with the adequate input data, it is possible to calculate the maximum solar radiation energy (irradiation) for a defined area and for a specified time ...... direct sun map to estimate direct radiation; 3. Overlay of the viewshed on a diffuse sky map to estimate diffuse radiation; 4. Repeating the process for every location of interest to produce an insolation map. The SAT «&generates an upward-looking hemispherical viewshed. A hemispherical viewshed ...Boban Pavlović, Milica Pešić-Georgiadis. "The application of ArcGIS for assessing the potential of solar energy in urban area: The case of Vranje" in 12th International Conference on Energy and Climate Change, 9-11 October 2019, Athens - Greece, Energy Policy and Development Centre (KEPA) of the National and Kapodistrian University of Athens (2019)
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Stratigraphy and microfossils (radiolarians and planktonic foraminifers) of the Upper Cretaceous (upper Santonian–lower Campanian) Struganik limestone (Western Serbia)
Liubov G. Bragina, Nikita Yu. Bragin, Ludmila F. Kopayevich, Nevenka Đerić, Nataša Gerzina Spajić (2019)Liubov G. Bragina, Nikita Yu. Bragin, Ludmila F. Kopayevich, Nevenka Đerić, Nataša Gerzina Spajić. "Stratigraphy and microfossils (radiolarians and planktonic foraminifers) of the Upper Cretaceous (upper Santonian–lower Campanian) Struganik limestone (Western Serbia)" in Palaeoworld, Elsevier BV (2019). https://doi.org/10.1016/j.palwor.2019.05.001
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Definition of Circulation Conditions and Groundwater Genesis of the Complex Krupaja Hydrogeological Karst System (Eastern Serbia)
Management, Monitoring, Policy and Law,Renewable Energy, Sustainability and the Environment, Geography, Planning and Development, Building and Construction... , human activity, etc. [3,8-12]. The conditions required for the formation of subthermal and thermal karst ground- waters were created by the process of deep karstification within karst systems, as well as hrough the existence of certain geological barriers that caused significant vertical karsti- ...Ljiljana Vasić, Saša Milanović, Tina Dašić. "Definition of Circulation Conditions and Groundwater Genesis of the Complex Krupaja Hydrogeological Karst System (Eastern Serbia)" in Sustainability, MDPI AG (2023). https://doi.org/10.3390/su151411146
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Low-temperature phase transition and magnetic properties of K3YbSi2O7
Predrag Dabić, Volker Kahlenberg, Biljana Krüger, Marko Rodić, Sabina Kovač, Jovan Blanuša, Zvonko Jagličić, Ljiljana Karanović, Václav Petříček, Aleksandar Kremenović (2021)alkalni silikati elemenata retkih zemalja, fazni prelazi, magnetne karakteristike, razdvajanje kristalnog polja, silikati lantanica... and triggers a symmetry reduction from P63/m to P63. Notably, the pressure- induced phase transition in these apatite compounds is a reversible process. For potassium-containing rare-earth disilicates two struc- ture types have been described so far, which crystallize in the space groups P63/mcm ...
... tetrahedra and triggers a symmetry reduction from P63/m to P63. Notably, the pressure- induced phase transition in these apatite compounds is a reversible process. For potassium-containing rare-earth disilicates two struc- ture types have been described so far, which crystallize in the space groups P6:/mcm and ...Predrag Dabić, Volker Kahlenberg, Biljana Krüger, Marko Rodić, Sabina Kovač, Jovan Blanuša, Zvonko Jagličić, Ljiljana Karanović, Václav Petříček, Aleksandar Kremenović. "Low-temperature phase transition and magnetic properties of K3YbSi2O7" in Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, International Union of Crystallography (IUCr) (2021). https://doi.org/10.1107/S2052520621006077
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Старење бунара у алувијалним срединама различитог степена оксичности
Brankica Majkić (2013-09-27)Старење бунара настаје као последица процеса корозије и колмирања. Процесекорозије могуће је спречити уградњом филтерских конструкција од материјалаотпорних на корозију. Колмирање може да настане без обзира на врсту материјалаод кога се праве бунарске конструкције, а процесом може бити захваћенаприфилтарска зона па и зона саме водоносне средине. Из тог разлога тезa јеусмеренa на процесе који доводе до колмирања бунара и последицe опадањaкапацитета водозахватних објеката. Полазна хипотеза је да бунари стареразличитом брзином у срединама различитог степена оксичности. Хидрохемијскеи микробиолошке карактеристике подземних ...старење бунара, алувијалне издани, степен оксичности средине,колмирање, бунарски талог, локални хидраулички губитак, дозвољене улазнебрзине... made from materials resistant to corrosion. Clogging might occur regardless of the type of material used to construct the well casing and the process may extend to the immediate vicinity of the well screen and even affect the aquifer itself. For the above reason, focus of the thesis is on the processes ...
... подземне средине Сви редокс процеси дефинисани су коришћењем улазних података и граница које су постављене у Workbook for identifying redox process софтверу да би се дефинисала редокс реакција. Затим је сваком редокс процесу додељена вредност између 1 и 21 према енергији која се ослобађа током ...
... квалитет везе између хемијских и микробиолошких Одређивање редокс категорије помоћу модификоване методе– Excel Workbook for Identifying redox process - поље 1 Комбиновање добијених резултата хемијских и микробиолошких анализа (поље 2 и поље 4) - поље 5 Коначно дефинисање редокс услова ...Brankica Majkić. "Старење бунара у алувијалним срединама различитог степена оксичности" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2013-09-27)
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Multivarijabilni modeli upravljanja u rudarstvu
Marjan M. Hudej (2014-02-03)osetljivost i rizik. Više pobuda generiše ovakvu atribuciju. Prva je, multivarijabilnostambijentalnih uslova i funkcionalna i strukturna složenost rudarskih sistema (čovek -priroda (radna sredina) - mašina – okruženje); Druga se odnosi na ne postojanje opštenaučne saglasnosti oko ocene pogodnosti modela za podršku odlučivanju i upravljanje.Treća, ako bi saglasnost i postojala, nije sigurno da bi raspoloživi modeli, metode i taktike,dale ekvivalentne rezultate za iste rudničke uslove. Četvrta, sistemske nauke još uveknemaju opšte prihvaćen i u praksi primenljiv algoritam izbora najboljeg rešenja ...... according to the algorithm set. In case of multi-model ranks equivalence, the order of alternatives is accepted as the final solution, otherwise the process of defining the final order of alternatives is achieved by pondering. If the goal is the best (the first ranked) alternative, the procedure is optional ...
... korišćenju 142 Pregled skraćenica AHP - AHP model/metoda - analitički hijerarhijski proces (eng. Analytical Hierarchy Process) BTO - Rudnički tehnološki sistem sa strukturom mašina: Bager-Transporter(i) sa trakom(ama)-Odlagač DEA - DEA model/metoda - analiza obavijanja ...
... nedominirajući set je redukovan na jednu alternativu, to je pašnjačka namena. Bascetin A., A DECISION SUPPORT SYSTEM USING ANALYTICAL HIERARCHY PROCESS (AHP) FOR THE OPTIMAL ENVIRONMENTAL RECLAMATION OF AN OPEN-PIT MINE / SISTEM ZA PODRŠKU ODLUČIVANJU UZ UPOTREBU ANALITIČKOG HIJERARHIJSKOG PROCESA ...Marjan M. Hudej. "Multivarijabilni modeli upravljanja u rudarstvu" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-02-03)
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Multivarijabilni modeli upravljanja u rudarstvu
Marjan M. Hudej (2014-02-03)osetljivost i rizik. Više pobuda generiše ovakvu atribuciju. Prva je, multivarijabilnostambijentalnih uslova i funkcionalna i strukturna složenost rudarskih sistema (čovek -priroda (radna sredina) - mašina – okruženje); Druga se odnosi na ne postojanje opštenaučne saglasnosti oko ocene pogodnosti modela za podršku odlučivanju i upravljanje.Treća, ako bi saglasnost i postojala, nije sigurno da bi raspoloživi modeli, metode i taktike,dale ekvivalentne rezultate za iste rudničke uslove. Četvrta, sistemske nauke još uveknemaju opšte prihvaćen i u praksi primenljiv algoritam izbora najboljeg rešenja ...... according to the algorithm set. In case of multi-model ranks equivalence, the order of alternatives is accepted as the final solution, otherwise the process of defining the final order of alternatives is achieved by pondering. If the goal is the best (the first ranked) alternative, the procedure is optional ...
... korišćenju 142 Pregled skraćenica AHP - AHP model/metoda - analitički hijerarhijski proces (eng. Analytical Hierarchy Process) BTO - Rudnički tehnološki sistem sa strukturom mašina: Bager-Transporter(i) sa trakom(ama)-Odlagač DEA - DEA model/metoda - analiza obavijanja ...
... nedominirajući set je redukovan na jednu alternativu, to je pašnjačka namena. Bascetin A., A DECISION SUPPORT SYSTEM USING ANALYTICAL HIERARCHY PROCESS (AHP) FOR THE OPTIMAL ENVIRONMENTAL RECLAMATION OF AN OPEN-PIT MINE / SISTEM ZA PODRŠKU ODLUČIVANJU UZ UPOTREBU ANALITIČKOG HIJERARHIJSKOG PROCESA ...Marjan M. Hudej. "Multivarijabilni modeli upravljanja u rudarstvu" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-02-03)
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Optimizacija utovarno-transportnih sistema u funkciji planiranja površinskog kopa
Mirjana V. Banković (2018-07-13)Profitabilna eksploatacija sve složenijih ležišta je težak zadatak koji zavisi odtemeljnog procesa analize, planiranja i projektovanja rudnika. Izvodljiv strateškiplan mora da zadovoljava društvena, regulatorna, tehnološka, geometrijska iekonomska ograničenja. Kako bi se postigao osnovni cilj, odnosno profitabilnost iodrživost rudarskog projekta na duži period, neophodno je unapređenjematematičkih modela i informatičke podrške procesima planiranja i optimizacijekoji će omogućiti efikasnu realizaciju ovih ciljeva...tehnološki model, integralni model, planiranje, optimizacija,utovarno-transportni sistem, neto sadašnja vrednost projekta... for optimal equipment selection in open pit mining: analytical hierarchy process. Istanbul University, Mining Engineering Department, 16 (2), 1-11. 193 Basçetin, A., 2004, An application of the analytic hierarchy process in equipment selection at Orhaneli open pit coal mine, Mining Technology ...
... and IT support to the processes of planning and optimization that will enable efficient realization of these goals. Optimization of mine planning process implies a complex analysis and a scientific approach, so the classical methods used do not give a global optimal solution especially in complex mining ...
... affects the economic efficiency of mining companies in the long run. The dissertation developed an integral approach and optimization model of planning process with special emphasis on the optimization of the mining excavation and transport systems, bearing in mind that these systems on the surface mines generate ...Mirjana V. Banković. "Optimizacija utovarno-transportnih sistema u funkciji planiranja površinskog kopa" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2018-07-13)
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Sastav i teksture minerala FeO-Fe2O3-TiO2 sistema u vulkanskim stenama i porfirskim ležištima bakra Borske metalogenetske zone
Aleksandar Luković (2021)Proces obrazovanja minerala iz sistema FeO-Fe2O3-TiO2 u uzorcima vulkanskih stena i porfirskih orudnjenja borske zone prikazan kroz pojavu magnetita/hematita i njihovih alteracija. Minerali ove zone su ispitivani optičkim metodama (odbijena i propuštena svetlost), SEM-EDS/BSD, XRPD, LA-ICP-MS metodama. Rezultati ispitivanja su, pored glavnih Fe – Ti oksida, otkrili prisustvo ferijskog ilmenita u hornblenda andezitima I vulkanske faze kao i magnetita sa većim koncetracija Cr u zoni zlotske magnetne anomalije. Ispitivanje uzoraka iz bušotina porfirskih sistema borske zone otkriva postojanje nekoliko ...... Composition and textures of the minerals of FeO-Fe2O3-TiO2 system in volcanic rocks and porphyry copper deposits of the Bor metallogenic zone The process of formation of mineral system FeO-Fe2O3-TiO2 in samples from volcanic rocks and porphyry deposits of Bor zone is explained through occurrences of ...
... with bornite and chalcopyrite as alteration product of magnetite. Type IIa is primary formed hematite in pyrite-chalcopyrite paragenesis through process of precipitacion from solution and type IIb is alteration product of magnetite in same paragenesis. All types are presented through mineral textures ...Aleksandar Luković. Sastav i teksture minerala FeO-Fe2O3-TiO2 sistema u vulkanskim stenama i porfirskim ležištima bakra Borske metalogenetske zone, Beograd : [A. Luković], 2021
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Centar za hidrogeologiju karsta - 15 godina nauke i struke
... cycle in nature and its impact on the karst process Dr. Cao presented field equipment and devices that should be installed on karst terrains in Serbia, to observe and analyse the dynamics of the carbon cycle in nature and its impact on the karst process. According to this topic, a field trip of ...
... supply. • Evolution of karstology, the role of Jovan Cvijić. • Distribution of karst terrains in the world and karst phenomenology (karstification process, features). • Methods of water research in karst. • Characterization and conceptual definition of water circulation in karst, connection with ...
... designed for diameters of 50 mm and above and have good visibility, lighting and resolution for recording around 10 m in diameter.The complete process is directly observed from the surface. One of the most advanced models that CKH oWns is a model of underwater camera for wells with a rotating lens ...urednici Saša Milanović, Ljiljana Vasić, Zoran Stevanović, Branislav Petrović. Centar za hidrogeologiju karsta - 15 godina nauke i struke, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet, Centar za hidrogeologiju karsta, 2023
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Using English Baits to Catch Serbian Multi-Word Terminology
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... valida- tion, 515 extracted Serbian MWTs were evaluated as good translations of the paired English Dictionary phrases. The examples illustrating this process are given in Table 3. MWTs extracted by the extractor that are equal to Serbian dictionary entries are determined in step 4 while those that are new ...Cvetana Krstev, Branislava Šandrih, Ranka Stanković. "Using English Baits to Catch Serbian Multi-Word Terminology" in Proceedings of the 11th International Conference on Language Resources and Evaluation, LREC 2018, Miyazaki, Japan, May 7-12, 2018, European Language Resources Association (ELRA) (2018)
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Softverski alati za korišćenje resursa za srpski jezik
Ivan Obradović, Ranka Stanković (2008)... Evaluation, LREC 2006, Genoa, Italy, pp. 1692-1697. Krstev C., Vitas D., Pavlović-Lažetić, G. (2008) “Re- sources and Methods in the Morphosyntactic Process- ing of Serbo-Croatian”, in Formal Description of Slavic Languages: The Fifth Conference, Leipzig 2003, Zy- batow, Gerhild et al. (eds.), Peter Lang: ...Ivan Obradović, Ranka Stanković. "Softverski alati za korišćenje resursa za srpski jezik" in INFOteka: časopis za informatiku i bibliotekarstvo, Belgrade, Serbia : Zajednica biblioteka univerziteta u Srbiji (2008)
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Development of terminological resources for expert knowledge: a case study in mining
Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Aleksandar Cvjetić. "Development of terminological resources for expert knowledge: a case study in mining" in Knowledge Management Research & Practice, Palgrave Macmillan (2015). https://doi.org/10.1057/kmrp.2015.10
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Actual contamination of the Danube and Sava rivers at Belgrade (2013)
Milan Antonijević, Marija Arsović, Josef Cáslavský, Vesna Cvetković, Predrag Dabić, Mladen Franko, Gordana Ilić, Milena Ivanovic, Nevena Ivanović, Milica Kosovac, Dragana Medić, Slobodan Najdanović, Milica Nikolić, Jovana Novaković, Tatjana Radovanović, Djurdjina Ranić, Bojan Šajatović, Gorica Špijunović, Ivana Stankov, Jelena Tošović, Polonca Trebse, Olivera Vasiljević, Jan Schwarzbauer (2014)rečni sistemi, stanje zagađenja, organski zagađivači, teški metali, skrining analize, non-target screening... of luminescence with 95 % confidence limits, according to ISO 11348-2, was calculated, using a model supported by computer software. The whole process was completed in accurate time intervals provided by machine and computer signal- ization. The blank test was performed with 2 % sodium chloride solution ...Milan Antonijević, Marija Arsović, Josef Cáslavský, Vesna Cvetković, Predrag Dabić, Mladen Franko, Gordana Ilić, Milena Ivanovic, Nevena Ivanović, Milica Kosovac, Dragana Medić, Slobodan Najdanović, Milica Nikolić, Jovana Novaković, Tatjana Radovanović, Djurdjina Ranić, Bojan Šajatović, Gorica Špijunović, Ivana Stankov, Jelena Tošović, Polonca Trebse, Olivera Vasiljević, Jan Schwarzbauer. "Actual contamination of the Danube and Sava rivers at Belgrade (2013)" in Journal of the Serbian Chemical Society, National Library of Serbia (2014). https://doi.org/10.2298/JSC131105014A