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Упит dcterms_subject_txt:administrativne procedure

296 items

  • Crystallography and Surface Oxidation of Stoichiometric Arsenopyrite from Šumadija-Kopaonik Pb-Zn/Polymetallic Ore District (Serbia)

    Ivana Jelić, Aleksandar Pačevski, Aleksandar Kremenović, Aleš Šoster, Andreja Šestan, Janez Zavašnik (2023)
    The behaviour and stability of arsenopyrite largely depend on its crystal structure, but studies of crystallography and structural defects are scarce. For clarification, we investigated a series of natural arsenopyrite crystals from the polymetallic Pb-Zn-(±Cu,Ag,Au,Sb,Bi,W) Šumadija-Kopaonik ore district (Serbia) by powder X-ray diffraction (XRPD). Among them, samples from the Drenjak gold mineralisation showed near-stoichiometric FeAsS composition and were further investigated by conventional and high-resolution transmission electron microscopy methods. TEM revealed abundant planar crystallographic defects and epitaxial surface oxide layer ...
    Inorganic Chemistry, Condensed Matter Physics,General Materials Science, General Chemical Engineering, crystal structure, FeAsS, oxidation, TEM, XRPD
    ... Drenjak deposit were cut, formatted, and mounted in epoxy resin. The surface was ground with emery papers according, to the standard petrographical procedure [17] and pre-analysed with a polarising reflected-light microscope and SEM to identify the micro-location for TEM analysis. In the suitable grains ...
    ... the TEM sample preparation over the site-specific ocused ion beam (FIB) method to avoid possible Ga implantation during, the sample preparation procedure. The electron-transparent samples were mounted in a low-background dual tilt Be holder and analysed in the transmission electron microscope (TEM ...

  • Integrative GHG Assessment in Oil and Gas Industry

    Aleksandar Mirković, Marija Živković, Stevan Đenadić, Darja Lubarda, Chinedu Anyanwa (2023)
    Reducing greenhouse gas emissions is one of the main targets of national strategies in European countries. As a main contributor to emissions, the energy sector is recognized as the most promising to apply measures and actions aimed to decrease GHG emissions. The Oil and Gas industry as a significant contributor to global greenhouse gas emissions is facing a growing need for estimating, mitigating, and reducing the impact of their operations on the atmosphere to stay competitive in a newly ...
    energetska tranzicija, gasovi staklene baste, industrija, nafta i gas
    ... hcaters, furnaces, kilns, ovens, flares, thermal oxidizers, dryers, and any other equipment or machinery that combusts any fucl. The selected procedure for determining amounts of emitted GHG depends on available input data. Depending on the availability of data, thcir consistency, and time serics ...
    ... transport activity. The source description shows thc diversity of mobile sources and the range of characteristics that affect emission factors. Procedure applied for nonstationary combustion is the same as thc onc for stationary processes undcr ticr I approach but with introduction of default cmission ...

  • Mikroelementi u uljnim šejlovima Aleksinca i njihov uticaj na životnu sredinu

    Nikoleta Aleksić (2021)
    ... strane Feliu-a i saradnika [5] sa određenim izmenama u proceduri sinteze, uz dodatak aditiva HCl u vodenu fazu mikroemulzije. Sastav vodene faze, odnosno sadržaj aditiva, je variran kako bi se proizvele promene u obliku nanočestica. Istom procedurom sintetizovani su i bimetalni PtAu/C nanokatalizatori ...
    ... optimalnom sadržaju aditiva, u slučaju Pt/C katalizatora, kao i uspešnost sinteze bimetalnih PtAu/C katalizatora, po prvi put u literaturi korišćenom procedurom. [6] Pt/C katalizatori – nanočestice kontrolisanog oblika Fizičko-hemijska karakterizacija potvrdila je uspešnost sinteze Pt/C katalizatora sa ...
    ... sar. [7]. Suncokretovo ulje i uljani ekstrakt sporednog proizvoda šargarepe podvrgnuti su transesterifikaciji u prisustvu bor(III)-fluorida, prema procedure opisanoj od strane Karlović i Andrić [8]. Gasno-hromatografska analiza (GC) je izvršena na uređaju Agilent 7890A sa plameno jonizujućim detektorom ...

  • Fuzzy expert analysis of the severity of mining machinery failure

    Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković (2020)
    Mining machinery failure is almost an everyday occurrence. Usually the failures bare certain consequences, which require additional financial costs to repair and restore the system to its operational state. The consequences are viewed through negative and damaging effects a failure has on the machine, health and safety of the employees, work environment, and on the environment. The removal of the consequences of the failure requires additional financial investment, which has a negative impact on the company’s business. In order ...
    Severity of failure, Severity of failure assessment, Mining machinery, Fuzzy sets, Fuzzy logic

  • Strategic Environmental Assessment in the Application of Preventive Protection for Wind Farm Noise—Case Study: Maestrale Ring Wind Farm

    Boško D. Josimović, Aleksandar Cvjetić, Božidar Manić (2021)
    Determining the spatial position of wind turbines is the initial and most important phase in the development of a wind farm project. In this sensitive phase, all potential problems that may arise in the later stages of project development should be prevented by means of spatial and urban planning instruments. This makes it possible to achieve maximum use of the potential of wind in a particular space and, thus, fulfil the technical and economic requirements of the project while ...
    Energija,energetski inženjering i elektroenergetska tehnologija,obnovljivi izvori energije, održivost i životna sredina,električni i elektronski inženjering,kontrola i optimizacija,inženjering
    ... SEA. In fact, the SEA procedure is car- ried out at the strategic level of planning, or in the initial phase of project development (which is the case for wind farms) when there is usually no exact data that is necessary for quantitative methods, which is why the procedure usually focuses on qualitative ...
    ... Assess. 2016, 18, 48–58. Energies 2021, 14, 6174 14 of 15 21. Gallo, P.; Fredianelli, L.; Palazzuoli, D.; Licitra, G.; Fidecaro, F. A procedure for the assessment of wind turbine noise. Appl. Acoust. 2016, 114, 213–217. 22. Lenchine, V. Assessment of amplitude modulation in environmental ...

  • Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species

    Biljana P Dojčinović, Boštjan Jančar, Lotfi Bessais, Aleksandar Kremenović, Nataša P Jović-Jovičić, Predrag T Banković, Dalibor M Stanković, Miloš Ognjanović, Bratislav V Antić (2019)
    Herein we report effects of partial substitution of Fe3+ by Y3+ in magnetite (Fe3O4) on morphology and inorganic arsenic species adsorption efficiency of the Fe3−xYxO4 nanoparticles formed. The series of Fe3−xYxO4 (x=0.00, 0.042 and 0.084, labeled as Y00, Y05 and Y10, respectively) was synthesized using co-precipitation followed by microwave-hydrothermal treatment (MW) at 200°C. With increase of yttrium content(xvalue), both the morphological inhomogeneity of the samples and the fraction of spinel nanorods as compared to spinel pseudospherical particles increased. By ...
    microstructure, microwave-hydrothermal synthesis, adsorption, magnetic nanoparticles, arsenic

  • Coupling of artificial intelligence methods in the development of hybrid intelligent systems

    Ranka Stanković, Ivan Obradović, Nikola Lilić (2001)
    In this paper we present an approach which couples various artificial intelligence (AI) methods in the solution of complex problems that cannot adequately be solved by a single AI method. We argue that the resulting, hybrid intelligent systems (HIS) can be successfully implemented with the use of available AI software libraries. Different coupling methods are analyzed and a classification of hybrid systems based on the chosen method is given. Two case studies of hybrid systems used in mining engineering ...
    hibridni inteligentni sistemi, spregnuti sistemi, metode veštačke inteligencije, rudarske primene veštačke inteligencije
    ... Airpollution - Topology Monitoring Fig. 3 Structure of a hybrid system for analysis of area air pollution load Basically, the estimation procedure uses NN prediction capabilities. However, it has been noted that in certain cases the NN classically trained through back propagation (BP) tends ...

  • Savremeni pristup rešavanja problema industrijskog otpada

    Mariја Bošković (2024)
    Rad ukazuje na savremene metode rešavanja problema industrijskog otpada, sa posebnim fokusom na pećnu prašinu koja nastaje tokom metalurških procesa, poput proizvodnje čelika u elektrolučnim pećima. U radu se detaljno razmatra hemijski sastav pećne prašine, koja sadrži teške metale poput cinka, olova i kadmijuma, i naglašavaju ekološki izazovi koje predstavlja njeno zbrinjavanje. Takođe, analiziraju se metode tretmana i valorizacije pećne prašine, uključujući pirometalurške i hidrometalurške procese, pri čemu je poseban akcenat stavljen na reciklažu cinka iz pećne prašine. Dalje, ...
    prašina, elektrolučna peć, cink, teški metali, reciklaža
    ... primenom postupaka magnetne i gravitacijske separacije prema procedurama Projekta RIS-DustRec-IL............ 68 Slika 30. Prečišćavanje proizvoda postupaka separacije i dobijanje polaznih proizvoda za različite industrijske grane prema procedurama Projekta RIS- DustRec-IH......................... 68 ...
    ... prema procedurama Projekta RIS-DustRec-IH [12] Frakcija sa povećanim sadržaje Fe,Mn, Ni, Cr Kastvomi halogenidi Otpad koji sadrži Bi.ALCaiMa Slika 30. Prečišćavanje proizvoda postupaka separacije i dobijanje polaznih proizvoda za različite industrijske grane prema procedurama Projekta ...
    ... 68 EKSPERIMENTALNI RAD Kao potencijalni uzorci za ispitivanje mogućnosti separacije i dobijanja komercijalnih proizvoda prema metodama i procedurama projekta RIS-DustRec-II, odabrano Je osam uzoraka elektrolučne prašine iz regiona RIS. Na ovim uzorcima su sprovedene detaljne fizičko-hemijske ...

  • Numerical Models of Debris Flows with Entrainment Analysis-Case Studies from the Republic of Serbia

    Jelka Krušić , Biljana Abolmasov, Miloš Marjanović (2021)
    The results of material entrainment analysis in RAMMS debris flow software, as well as numerical models of final flow heights for two case studies from the Republic of Serbia are presented. Both of debris flow cases started with initial sliding of huge volume block, prolonging to behave as flowing process. Results of the analysis showed that entrainment material affects final results of transportation model, runout distance, deposition area and volume of debris flow. In both cases entrainment volume is very ...
    tecišta, zadržavanje nanosa, RAMMS, validacija

  • Пројекат ПРИЗМА: Карактеризација и технолошки поступци за рециклажу и поновну употребу флотацијске јаловине рудника „Рудник“

    Владимир Симић, Стефан Петровић, Филип Арнаут, Весна Цветков, Милена Костовић, Драган Радуловић, Јовица Стојановић, Владимир Јовановић, Дејан Тодоровић, Нина Николић, Јелена Сенћански, Грозданка Богдановић, Драгана Мариловић (2024)
    Prizma, REASONING, Rudnik, jalovina, Fond za nauku Republike Srbije

  • Preliminary regional landslide susceptibility assessment using limited data

    Igor Peshevski, Milorad Jovanovski, Biljana Abolmasov, Jovan Papic, Uroš Đurić, Miloš Marjanović, Ubydul Haque, Natasha Nedelkovska (2019)
    In this paper a heuristic approach for preliminary regional landslide susceptibility assessment using limited amount of data is presented. It is called arbitrary polynomial method and takes into account 5 landslide conditioning parameters: lithology, slope inclination, average annual rainfall, land use and maximum expected seismic intensity. According to the method, in the first stage, a gradation is performed for each of the carefully selected conditioning parameters by assigning so called rating points to the grid cells on which the ...
    klizišta, podložnost
    ... the conditioning parameters. The general framework of the method is presented in Fig. 1 and details are given in the following subsections. The procedure is quite different to the statistical correlation of landslides and conditioning parameters which is the most com- mon approach in landslide sus ...
    ... ultimately lead to produc- tion of a satisfactory and representative preliminary landslide susceptibility map of a particular region. Following this procedure, 8 additional variants of the basic TLSR models were prepared. The maximum possible value of the WTLSR that can be obtained with the proposed ...
    ... realistic distribution of landslide susceptibility classes. It is hereby recommended that sensitivity testing be applied as a standard post-processing procedure in any regional heuristic landslide susceptibility analysis, and especially for cases with limited amounts of data for the landslide conditioning ...

  • 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
    ... to this, the thinner nanoflake particles were formed with an average diameter of ~70 nm for the sample annealed at 500 "C for 2 h. A similar procedure was conducted by Abdullah et al. [29] with the same surfac- tant: after annealing; at 500 ?C for 4 h, the nanoflakes with thicknesses close to 65–80 ...
    ... The band gap values were deduced by extrapolating the linear portion of the curves to the energy axis, as shown in Figure 6. According to this procedure, the bandgap energy Eg values, assuming the allowed direct and indirect transitions, are estimated as ~2.24 and ~2.11 eV, respectively. Z< 04 ...
    ... without irradiation of the solution. The results showed negligible adsorption (less than 1% in 120 min in all three cases). 3.5. Analytical Procedure For each solution (NAD, PIN, and MET) the sample was collected before cell exposure to the UV irradiation, filtered through a Millipore membrane ...

  • Rezultati ispitivanja parametara čvrstoće i dinamičkih svojstava mermera i mogućnost njihove korelacije

    Jelena Majstorović-Necković, Vladimir Čebašek, Veljko Rupar (2023)
    Ispitivanja stena kao radne sredine, odnosno materijala sa kojim se gradi, na kome se gradi i u kome se gradi, svojom složenošću zahteva njeno svestrano izučavanje po velikom broju parametara. Zadatak Mehanike stena je da što bolje upozna ponašanje stenske mase i njenu otpornost na dejstvo pritiska, zatezanja i smicanja, kao i dinamičkih svojstava. Poznavanje navedenih parametara i njihova korelacija omogućavaju pouzdaniji izbor parametara za projektovanje danas sve zahtevnijih uslova kako podzemne, tako i površinske eksploatacije. U ovom radu ...
    mermer, jednoosna čvrstoća na pritisak, čvrstoća na istezanje, brzina longitudinalnih elastičnih talasa, korelacija

  • Contribution to the geotechnical classification of municipal waste landfills in Serbia

    Dragoslav Rakić, Irena Basarić, Laslo Čaki, Slobodan Ćorić (2018)
    Management, Monitoring, Policy and Law, Nature and Landscape Conservation, Geochemistry and Petrology, Waste Management and Disposal,Geotechnical Engineering and Engineering Geology,Water Science and Technology,Environmental Chemistry,Environmental Engineering

  • Machine Learning and Deep Neural Network-Based Lemmatization and Morphosyntactic Tagging for Serbian

    Ranka Stanković, Branislava Šandrih, Cvetana Krstev, Miloš Utvić, Mihailo Škorić (2020)
    The training of new tagger models for Serbian is primarily motivated by the enhancement of the existing tagset with the grammatical category of a gender. The harmonization of resources that were manually annotated within different projects over a long period of time was an important task, enabled by the development of tools that support partial automation. The supporting tools take into account different taggers and tagsets. This paper focuses on TreeTagger and spaCy taggers, and the annotation schema alignment ...
    Part-of-Speech tagging, lemmatization, corpus, evaluation, Serbian, morphological dictionary
    ... both SENT (end sentence tag) and PUNCT 3957 tags were encoded as PUNCT. In order to perform this complex harmonization task we developed a procedure to automatically add additional lay- ers to annotated texts for each annotation schema. A MS SQLServer database that contains all annotated text ...
    ... positions 1)–5). spaCy models are trained to predict class labels from any custom tagset that is available in training data. Yet, before the training procedure, it is obligatory to define a mapping from this custom tagset to the Universal Part-of-Speech tagset. This is done by listing key-value pairs for ...

  • Hronološki pregled razvoja površinske eksploatacije lignita u Srbiji

    Bojan Dimitrijević, Radmila Gaćina, Bogoljub Vučković (2023)
    U ovom preglednom radu dat je istorijski pregled razvoja površinske eksploatacije lignita na teritoriji Srbije, uz kratak osvrt na geološki nastanak i kvalitet i rezerve uglja, kao i mogućnosti korišćenja za dalju upotrebu. Kolubarski, Kostolački i Kovinski ugljeni baseni lignita u Srbiji, ne računajući Kosovsko-Metohijski i Drenički u sastavu AP Kosovo i Metohija po Rezoluciji 1244 UN, su ležišta najrasprostranjenijeg uglja - lignita u Srbiji koji se eksploatiše od druge polovine 20. veka na velikom broju površinskih kopova ...
    površinska eksploatacija ugalja, lignit, Kolubara, Kostolac, Srbija

  • 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 ...
    rudarstvo, odlučivanje, upravljanje, model,multivarijabilno, multiatributno, multikriterijumsko
    ... disertacije posebno zanimljiv pošto problem donošenja odluka u fazi obustave radova na površinskom kopu posmatra kao niz integrisanih procedura. Autori ističu da se procedure rekultivacije degradiranog zemljišta površinskom eksploatacijom sastoje od brojnih aktivnosti u cilju prevencije, praćenja i kontrole ...
    ... the multi-variable conditions in mines. Since the goal is not to select the best model, but rather the best solution for the task in question, the procedure of selection of the best ranked alternative, or the best order of alternatives is accomplished depends on the instabilities of multi-model ranks ...
    ... 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, depending on the multi-model ranks equivalence degree. The applicability and the operative usability of the approach set, i.e. the ...

  • 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 ...
    rudarstvo, odlučivanje, upravljanje, model,multivarijabilno, multiatributno, multikriterijumsko
    ... disertacije posebno zanimljiv pošto problem donošenja odluka u fazi obustave radova na površinskom kopu posmatra kao niz integrisanih procedura. Autori ističu da se procedure rekultivacije degradiranog zemljišta površinskom eksploatacijom sastoje od brojnih aktivnosti u cilju prevencije, praćenja i kontrole ...
    ... the multi-variable conditions in mines. Since the goal is not to select the best model, but rather the best solution for the task in question, the procedure of selection of the best ranked alternative, or the best order of alternatives is accomplished depends on the instabilities of multi-model ranks ...
    ... 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, depending on the multi-model ranks equivalence degree. The applicability and the operative usability of the approach set, i.e. the ...

  • Classification of Terms on a Positive-Negative Feelings Polarity Scale Based on Emoticons

    Mihailo Škorić (2017)
    The goal of this paper is to draw attention to the possibility of using emoticon-riddled text on the web in language-neutral sentiment analysis. It introduces several innovations in the existing framework of research and tests their effectiveness. It also presents a software tool especially made for that purpose, explains how it builds a database with sentimental value of terms and offers the user manual. Finally, it presents a software tool that tests the new database and gives some examples ...
    data mining, information extraction, emotions, text on the web
    ... all tokens containing the same exact text. vx = n+c−1∑ i=n vi cx (3) – Node y becomes the first node in the document and the procedure starts again. This procedure assigns attributes to all the tokens except for the last one, ERR0001 token, which was created during tokenization of the document ...

  • 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