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Упит dcterms_subject_txt:General Materials Science

853 items

  • Using technology for knowledge transfer between academia and enterprises

    Ivan Obradović, Ranka Stanković (2014)
    ... and enterprise staff involved in production of OER materials. As its third objective the project will produce course materials in several different languages, in various forms such as videos, audio streams and written material. The materials will be supported by electronic terminological resources ...
    ... Western Balkans. Another objective is to provide training for members of universities and enterprises for production of OER materials. The third objective is to produce materials in various languages, in video, audio and textual format, supported by electronic terminological resources, services, and ...
    ... the even wider open educational resources (OER) initiative, where materials are offered openly and freely to educators, students, and self-learners to use and reuse for teaching, learning, and research (Bissell, 2009). The materials are released under an open source license which permits their use ...

  • Analysis Of the Process Of Carbon Capture Utilization And Storage In Underground Reservoirs

    John Nyame (2024)
    The importance of mitigating the effects of global climate change has necessitated an in-depth exploration of innovative strategies to reduce carbon dioxide (CO2) emissions. Among these strategies, Carbon Capture, Utilization, and Storage (CCUS) has emerged as a promising and transformative solution. This master thesis delves into the diverse realm of CCUS processes, aiming to unravel the positives challenges, and opportunities within this dynamic field. The analysis begins with a systematic examination of carbon capture technologies, encompassing post-combustion, pre-combustion, and oxy-fuel combustion ...
    Carbon Capture, Utilization and Storage
    ... Overview of CO2 Capture Technologies, Energy Environment Science 2010, Volume 3, p1645—1669. https://doi.org/10.1039/C004106H [26] Aresta, M. et al.: Catalysis for the Volorization of Exhaust Carbon: from CO2 to Chemicals, Materials and Fuels. Technological use of CO2, Chemical Reviews 2014, ...
    ... by activated templated carbons,” Journal of Colloid and Interface Science, 2012, vol. 366, no. 1, pp. 147—154. [36] A. L. Chaffee, G. P. Knowles, Z. Liang, J. Zhang, P. Xiao, and P. A. Webley, “CO2 capture by adsorption: materials and process development,” International Journal of Greenhouse Gas ...
    ... low- temperature materials[29]. The primary classes of high-temperature materials include alkali or alkaline-earth oxides such as calcium oxides, alkali silicates and zirconates, as well as double salts, whereas low-temperature adsorbents cover conventional porous materials such as zeolites, ...

  • DNA/BSA interactions and cytotoxic studies of tetradentate N,N,O,O Schiff base copper(II) complexes

    Aleksandar Mijatović, Angelina Caković, Aleksandar Lolić, Snezana Sretenović, Marko Živanović, Dragana Seklić, Jovana Bogojeski, Biljana Petrović (2023)
    Three Schiff base Cu(II) complexes, (N,N’-bis(acetylacetone)propylenediimine)copper(II) complex, [Cu(acac2pn)] (1), (N,N'-bis-(benzoylacetone)propylenediimine)copper(II) complex, [Cu(phacac2pn)] (2) and (N,N’-bis-(trifluoroacetylacetone)propylenediimine)copper(II) complex, [Cu(tfacac2pn)] (3), were used to investigate the interactions with calf thymus DNA (ct-DNA) and bovine serum albumin (BSA) using the electronic absorption and spectroscopic fluorescence methods. UV-Vis absorption studies showed that studied complexes interact with DNA molecule and exhibit moderate binding affinity. Fluorescence studies of complexes 1-3 also showed a possibility for DNA intercalation as well as a relatively high binding ability ...
    General Chemistry

  • It-Sr-NER: Web Services for Recognizing and Linking Named Entities in Text and Displaying Them on a Web Map

    Olja Perišić, Ranka Stanković, Milica Ikonić Nešić, Mihailo Škorić (2023)
    The paper will present the results of the project `“It-Sr-NER: Web services for named entities recognition, linking and mapping,” in which teams from the University of Turin and the Society for Language Resources and Technologies JeRTeh participated, and whose goal was the development of the It-Sr-NER web service for named entity annotations in the text and displaying them on the map. Named entities in these services are names of persons, places, organizations, demonyms (ethnicities), events and works of art.
    General Engineering

  • Analiza uporednog praćenja temperature površine ohlađenih materijala pri njihovom zagrevanju do ambijentalne temperature

    Stevan Đenadić, Ljubiša Tomić, Vesna Damnjanović, Katarina Nestorović (2021)
    U datom eksperimentalnom radu su termografskim metodama ispitivane termofizičke karakteristike različitih materijala. Za ispitivanja su izabrani mesingani niovčić, ugalj i pelet, jer imaju različita termoizolaciona svojstava i različito stanje površine. Uzorci su najpre hlađeni, a zatim je njihovo zagrevanje na sobnoj temperaturi praćeno termalnom kamerom. U drugom delu eksperimenta, korišćena je impulsna termografija, a zagrevanje površine uzoraka vršeno je svetlosnom pobudom.
    termografija, impulsna termografija, nedestruktivno testiranje materijala, mesing, ugalj, pelet

  • The Importance of Geotechnical Investigations for the Construction of Transfer Station „Prelići“ on Landfill in Cacak – Serbia

    Dragoslav Rakić, Irena Basarić, Jovana Janković, Tina Đurić (2019)
    For the purpose of the facilities construction within the transfer station „Prelici“ in Cacak, specific geotechnical investigations were carried out based on which the technological project with the facilities schedule was developed. Significant deviations in relation to the presented results were determined during earthworks, so the additional geotechnical investigation works were carried out. Since the new investigation works have determined a different cross section of the terrain, it was proposed to move the planned facilities which led to the ...
    landfill, geotechnical investigations, transfer station
    ... heterogeneous. Old municipal waste (MSW-kO) is in the advanced stage of biochemical decomposition, so that mainly organic materials are dominant. Besides them, various materials that are difficult to decompose, such as plastics, metal, glass, etc., are also found. They are partly located below the ...
    ... harmful effects). Basically, quantitative prevention means: reducing the total mass of municipal waste and finding ways to recycle secondary raw materials from municipal waste (Rakic, Milovanovic & Jakovljevic, 2011). In this regard, the modern technological solutions are proposed which are usually ...
    ... compressed soil layer, Figure 2), the deviations also referred to: thickness and separation of natural lithological layers, and especially of modern materials, i.e. the thickness of old municipal waste and its cover (Figure 3). Certain differences related to the definition of groundwater level as well ...

  • 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

  • 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

  • Atmospheric exposure vs burying: influences on damage intensity of built-in kersantite in the monument of the Small Staircase (Belgrade, Serbia)

    Nevenka Novaković, Predrag Dabić, Vesna Matović (2023)
    Proučavan je efekat „zatrpanog kamena“ na intenzitet procesa degradacije prisutnih na kersantitu koji je ugrađen u spomenik Malo stepenište. Istraživanja su vršena na uzorcima stene iz kamenoloma i na oštećenim kamenim blokovima ugrađenim u spomenik. Dok su neki delovi stepeništa bili pod zemljom 90 godina, većina kamenih elemenata je bila izložena različitim uslovima sredine i antropogenim uticajima. Urađeno je detaljno mapiranje trenutnog stanja spomenika kako bi se istražio uticaj “zatrpavanja” i kompleksne geometrije spomenika na tip propadanja i variranje ...
    Raspadanje, Indeks oštećenja, Zatrpavanje, Fizička svojstva, Kersantit

  • Improving efficiency of thermal power plants through mine coal quality planning and control

    Mirjana Banković, Dejan Stevanović, Milica Pešić, Aleksandra Tomašević, Ljiljana Kolonja (2018)
    Главни циљ контроле квалитета угља у рудницима лигнита је снабдевање термоелектрана угљем чији квалитет мора да се креће унутар одређених квалитативних ограничења. Карактеристике угља могу да утичу на ефикасност, поузданост и расположивост како котла тако и јединица за контролу емисије. У овом раду аутори су презентовали интегрисану симулацију рударског процеса као нови приступ у истраживању променљивости калоричне вредности угља приликом експлоатације комплексног лежишта лигнита. Резултати таквог приступа омогућавају драгоцен увид у перформансе континуалног рударског система у смислу контроле променљивости ...
    mine planning, variability of coal quality, simulation, coal blending

  • 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
    ... Coal, Hydrocar- bon Raw Materials (in Russian), CRC Gazprom, Moscow, Russia, 2004 11| Petrović, D. et. al., Possibilities of Coal Conversion into Gas Fuel from the Aspect of Greater Valorization of Available Energy Resources in Serbia by Implementing UCG, RMZ-Materials and Geoenvironment, 57(2010) ...
    ... separation and storage of CO [3]. Syngas can be used to produce a number of usable products, such as electricity, liquid fuels and chemical raw materials. The competitiveness of these products is changing with the cost of technology, or the level of development of this technology. Today's economic ...
    ... coal gasification | David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić | Thermal Science | 2019 | | 10.2298/TSCI190725390P http://dr.rgf.bg.ac.rs/s/repo/item/0008167 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у ...

  • An aproach to Implementation of blended learning in a university setting

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Jelena Prodanović (2011)
    ... course content, goals, outcome, as well as the basic course materials, and dynamic data – information on all important events during the course: results of test and activities, various announcements, additional course materials added by teachers, etc. In the initial phase of portal development ...
    ... for a forthcoming instruction class, download course materials or get informed about their test and exam results, date and time of forthcoming tests and exams, etc., without being physically present in the FMG building. Course materials available on the portal to date cover approximately ...
    ... development the basic data for all courses were imported from the accreditation materials prepared for the accreditation process FMG underwent shortly before that. An example of these basic data is given in Figure 1 which depicts a portal page with basic information for the course Informatics ...

  • BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties

    Marija Šuljagić, Ivan Petronijević, Miljana M. Mirković, Aleksandar Kremenović, Adis Džunuzović, Vladimir B. Pavlović, Aleksandra Kalezić-Glišović, Ljubica Andjelković (2023)
    To investigate the influence of spinel structure and sintering temperature on the functional properties of BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1), NiFe2O4, ZnFe2O4, and Ni0.5Zn0.5Fe2O4 were in situ prepared by thermal decomposition onto BaTiO3 surface from acetylacetonate precursors. As-prepared powders were additionally sintered at 1150 °C and 1300 °C. X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS) were used for the detailed examination of phase composition and morphology. The magnetic, dielectric, and ...
    ferroelectric, dielectric properties, magnetic properties, titanate/ferrite composites, phase composition
    ... D.; Ksenevich, V.; Bychanok, D.; Selskis, A.; uzhir, P.; et al.: The Phosphate-Based Composite Materials Filled with Nano-Sized BaTiOy and Fes3Oux: Toward the Unfired Multiferroic Materials. Materials 2021, 14, 133. [CrossRef] [PubMed] Omelyanchik, A.; Antipova, V.; Gritsenko, C.; Kolesnikova, V ...
    ... Serbia Faculty of Agriculture, University of Belgrade, Nemanjina 6, Zemun, 11000 Belgrade, Serbia Section for Amorphous Materials, Joint Laboratory for Advanced Materials of SASA, Faculty of Technical Sciences Čačak, University of Kragujevac, Svetog, Save 65, 32000 Čačak, Serbia * · Correspondence: ...
    ... magnetoelectric multiferroics. which are materials that display ferromagnetism and ferroelectricity simultaneously [5-9]. The perovskite compounds are one of the most promising, types of magnetoelectric multiferroics [10-14]. The advantages of these novel materials can support the development of advanced ...

  • Testing the energy value of different types of coal by the method of active thermography

    Stevan Đenadić, Ljubiša Tomić, Vesna Damnjanović, Predrag Jovančić, Dragutin Jovković (2020)
    In this paper, coal thermograms are presented and analyzed in order to determine their energy value. Two types of coal of different categories, brown and lignite, were selected for active thermographic imaging. The tested coal samples were processed before measurement so that they are similar in dimensions and have two plane-parallel smooth surfaces. The test samples were "primarily" heated under the same conditions and the process of their cooling was monitored by a thermal camera. "Then" they were cooled ...
    Infrared imaging, nondestructive testing, active thermography, coal.

  • Mineral Resources of Serbia: Environmental, Societal and Economic Challenges

    Vladimir Simić, Rade Jelenković, Dragana Životić (2019)
    ... presented 13 papers at international and domestic conferences. Her published papers cover various areas of environmental science, plant science, soil science, materials science, and chemistry. Snežana B. Tošić, PhD Full professor Affiliation: University of Niš, Faculty of Sciences and Mathematics ...
    ... and domestic conferences. The focal points of the published papers were in the areas of chemical science and technology, electrochemistry, environmental science, soil science, and materials science. Mile D. Dimitrijević, PhD Full professor Affiliation: University of Belgrade, Technical faculty ...
    ... possibilities for substitution of stone in road construction with secondary raw materials.” The General Urban Plan is drawn up as a strategic developmental plan, with general elements of spatial development. The General Urban Plan is drawn up for a populated settlement which is the seat of a unit ...

  • 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
    ... Poisson-Boltzmann solver framework. Molecular DFT calculations were performed with the Jaguar program [56—59], as implemented in the Schrodingjeer Materials Science Suite 2022-2. TD-DFT analyses were performed using the long-range corrected version of B3LYP, namely the CAM-B3LYP density functional [60] ...
    ... be 3.5 eV [39]. All periodic DFT calculations were performed with the Quantum Espresso program [79-82], as implemented in the Schrodinger Materials Science Suite 2022-2. 4. Conclusions For the preparation of V»Os, facile hydrothermal synthesis was used. X-ray diffraction identifies only one ...
    ... Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, 21000 Novi Sad, Serbia 2 · Centerfor Solid State and New Materials, Institute of Physics Belgrade, 11000 Belgrade, Serbia Laboratory of Crystallography, Faculty of Mining, and Geology, University of Belgrade, Đušina ...

  • Life Cycle Assessment of Individual Wood Biomass Heating Systems in Households

    Boban Pavlović, Dejan Ivezić, Marija Živković (2020)
    The use of solid fuels (wood biomass and coal) for heating of households continues to be common practice within European countries. Solid fuel combustion in households contributes more than 46% to total emissions of fine particulate matter. In this study, a life-cycle assessment (LCA) of firewood-based and pellet-based heating systems is performed. These two systems represent two different types of individual wood biomass heating systems. In the case of the firewood-based heating systems, it is analyzed a typical stove ...
    Grejanje, Analiza životnog ciklusa, Drvna biomasa, Individualni sistemi grejanja
    ... rate [20]. The basic information and material composition of HSs are given in Table 2 [21], [22]. The materials mentioned in Table 2 form the bulk of the furnace’s weight (90%). Other materials that constitute a smaller fraction of the appliance weight were not considered for the analysis. ...
    ... cleaner energy source than fossil fuels, it is important to evaluate the interactions with the environment over the whole lifecycle of each HS (materials, manufacturing, transportation, use, and final disposal) [10]. Life cycle assessment (LCA) systematically analyzes pollution and resource connected ...
    ... ing location to the house, and the same type of lorry for the analyzed HSs. As for the waste treatment scenario, it is assumed that 80% of the materials by mass will be recycled and the remaining 20% will be disposed of in a landfill. 3.2 Heating systems specification For the LCA of the individual ...

  • LRMI markup of OER content within the BAEKTEL project

    Ranka Stanković, Daniela Carlucci, Olivera Kitanović, Nikola Vulović, Bojan Zlatić (2015)
    ... Nowadays, online searches for educational materials are conducted more often than a few years ago. Although Internet searches are easy and speedy, they are not always efficient and retrieve lots of irrelevant results due to the huge amount of materials available. Through the use of metadata the ...
    ... outlines the approach to tagging of OER content with metadata within the BAEKTEL project with the aim of increasing the discoverability of OER materials by potential users. The approach is based on the Learning Resource Metadata Initiative (LRMI), which makes it easier to publish, discover, and deliver ...
    ... Metadata Initiative (LRMI) offers ways to help pinpoint the right learning resources to address user needs. Applying metadata tags to educational materials makes them more easily discoverable through online searching [1]. Descriptors defined in LRMI include: physical attributes, pedagogical relevance ...

  • Project REASONING: Characterization and technological procedures for recycling and reusing of the rudnik mine flotation tailings

    Vesna Cvetkov, Vladimir Simić, Stefan Petrović, Filip Arnaut, Milena Kostović, Dragan Radulović, Jovica Stojanović, Vladimir Jovanović, Dejan Todorović, Nina Nikolić, Jelena Senćanski, Grozdanka Bogdanović, Dragana Marilović (2024)

  • Terminological and lexical resources used to provide open multilingual educational resources

    Biljana Lazić, Danica Seničić, Aleksandra Tomašević, Bojan Zlatić (2016)
    Open educational resources (OER) within BAEKTEL (Blending Academic and Entrepreneurial Knowledge in Technology enhanced learning) network will be available in different languages, mostly in the languages of Western Balkans, Russian and English. University of Belgrade (UB) hosts a central repository based on: BAEKTEL Metadata Portal (BMP), terminological web application for management, browse and search of terminological resources, web services for linguistic support (query expansion, information retrieval, OER indexing, etc.), annotation of selected resources and OER repository on local edX ...
    otvoreni obrazovni resursi, leksički resursi, obrada prirodnih jezika, terminologija
    ... that the terminology is acquired systematically in all languages involved, which would lead to equivalent opportunities and up to date education materials. Firstly, a brief history and current state of the art of terminological resources are presented, followed by an overview of BAEKTEL (Blending ...
    ... is necessary because of the rich flexion of Serbian language and other similar languages of Western Balkans. Partners in BAEKTEL project produce materials in Serbian, Bosnian and Montenegrin language. When it comes to morphology, the aforementioned languages are quite similar, therefore it is possible ...
    ... dictionaries include semantic markers which allow the distinction between ijekavian, ekavian and ikavian pronunciation. Dictionaries cover both general lexica and proper names. Serbian morphological dictionaries are found in LADL (Laboratoire d'Automatique Documentaire et Linguistique) format. There ...