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Упит dcterms_subject_txt:additional energy engagement

388 items

  • Održivo korišćenje mađarsko-srpskih međugraničnih vodnih tela

    Dušan Polomčić, Zoran Stevanović, Saša Milanović, Stanko Sorajić, Bojan Hajdin, Željko Kljajić (2010)
    ... in Serbia the main tapping is from the upper section up to 200 m depth, for the water supply of the main Hungarian consumers and for geothermal energy the deeper aquifer layers are utilized. The studied aquifer system is located between the Danube and Tisa Rivers and extends to the vicinity ...
    ... While in Serbia the main tapping is from the upper section up to 200 m depth, for the water supply of the main Hungarian consumers and for geothermal energy the deeper aquifer layers are utilized. The studied aquifer system is located between the Danube and Tisa Rivers and extends to the vicinity of K ...

  • Overcoming the Low Oral Bioavailability of Deuterated Pyrazoloquinolinone Ligand DK-I-60-3 by Nanonization: A Knowledge-Based Approach

    Jelena R. Mitrović , Branka Divović-Matović, Daniel E. Knutson, Jelena B. Ðoković, Aleksandar Kremenović, Vladimir D. Dobričić, Danijela V. Randjelović, Ivana Pantelić, James M. Cook, Miroslav M. Savić, Snežana D. Savić (2021)
    Poor water solubility of new chemical entities is considered as one of the main obstacles in drug development, as it usually leads to low bioavailability after administration. To overcome these problems, the selection of the appropriate formulation technology needs to be based on the physicochemical properties of the drug and introduced in the early stages of drug research. One example of the new potential drug substance with poor solubility is DK-I-60-3, deuterated pyrazoloquinolinone, designed for the treatment of various neuropsychiatric ...
    pyrazoloquinolinones, nanocrystals, wet media milling, fasted/fed bioavailability
    ... Melting point depression could also be connected to the formation of crystal lattice defects during wet ball milling, as it is a high-energy process [24]. The additional broad peak at 120 ◦C in thermograms of samples S5, F5, F6, and F8 could be associated with residual water and PVP. Pharmaceutics 2021 ...
    ... beads volume increase (from 20% to 40%), particle size decreased for 30–60 nm, and by further volume increase to 60%, the size was reduced for an additional 20 nm in most formulations (Table 3). Two-way ANOVA results showed that interaction between milling time and beads volume had a significant effect ...
    ... temperature. Compared to initial values, particle size after one month of storage increased by around 10 nm, and then the values stayed unchanged for an additional two months (Table 4). The exception is formulation F7, where the change in particle size was more pronounced (around 40 nm), with a significant change ...

  • Indexing of textual databases based on lexical resources: A case study for Serbian

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović (2015)
    In this paper we describe an approach to improvement of information retrieval results for large textual databases by pre-indexing documents using bag-of-words and Named Entity Recognition. The approach was applied on a database of geological projects financed by the Republic of Serbia in the last half century. Each document within this database is described by metadata, consisting of several fields such as title, domain, keywords, abstract, geographical location and the like. A bag of words was produced from these ...
    ... contained in a textual database, the primary key of the document in the database. If the search is performed by scanning textual documents, then their additional representation is not required. In order to increase efficiency, es- pecially in the case of large collections, a formal representation surrogate ...
    ... The new system ranks it as the first because the td idf of this term for this document is calculated on the basis of its frequency nj = 12 (ten additional matches are in Figure 1 highlighted in yellow). Due to its simple pattern matching the old system finds the positive match zlatonosna žica ‘gold ...
    ... use of modern information technology. Consequently, the Ministry of Natural Resources and Environment Protec- tion, now the Ministry of Mining and Energy of the Republic of Serbia, launched in 2004 the project of the Geological Information System of Serbia, which has been developed in several phases ...

  • Hydrogeochemical distribution of Ca and Mg in groundwater in Serbia

    Petar Papić, Jovana Milosavljević, Marina Ćuk, Rastko Petrović (2014)

  • Analiza primene višekriterijumskih metoda u optimizaciji izbora hidruličnih bagera na površinskim kopovima uglja

    Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Filip Miletić, Ivan Janković (2019)
    Hidraulični bageri primenjuju se u različitim oblastima privrede a najzastupljeniji su u građevinarstvu i rudarstvu. Na površinskim kopovima sa kontinualnim sistemima, klasifikuju kao pomoćna mehanizacija a na površinskim kopovima sa diskontinualnim sistemima, kao osnovna mehanizacija. Kako je u oba slučaja njihova primena neizostavna, važno je izvršiti adekvatnu analizu postojećih podataka, u cilju optimizacije izbora tipa hidrauličnog bagera u odnosu na uslove rada datog površinskog kopa. U radu su opisane različite višekriterijumske metode koje su korišćene za analizu hidrauličnih bagera. ...
    višekriterijumske metode, površinski kop uglja, pomoćna mehanizacija, hidraulični bager
    ... Tichkowsky G, Kumar, A. De- velopment of a Multi-Criteria Assessment Model for Ranking of Renewable and Non-Renewable Trans- portation Fuel Vehicles, Energy, 34, pp. 112-125, 2009. DOI: 10.1016/j.energy.2008.09.004 [10] Ashrafzadeh M, Rafiei F M, Isfahani M-N, Zare Z, Application of fuzzy TOPSIS method ...

  • Optimizacija parametara reza rotornog bagera pri otkopavanju materijala sa povećanom čvrstoćom

    Saša D. Bošković (2016-09-09)
    Otkopavanje materijala rotornim bagerom je veoma sloţen fiziĉko-mehaniĉki proces. Pokazatelji efektivnosti tog procesa zavise od velikog broja raznovrsnih ĉinilaca od kojih se posebno mogu istaći: fiziĉko-mehaniĉke karakteristike materijala koji se otkopava, reţim rada bagera i izbor tehnoloških parametara bloka, odreska i reza, geometrije vedrica i zuba itd. Poseban problem se javlja kod otkopavanja materijala povećane ĉvrstoće, što je ĉest sluĉaj na našim površinskim kopovima. Dimenzionisanje specifiĉne sile kopanja bagera prema manjim masama izuzetno ĉvrstog materijala je neracionalno i rešenje ...
    rotorni bager, parametri reza, otpor na kopanje, dinamika bagera, kapacitet, optimizacija, specifična potrošnja energije
    ... cutting parameters, resistance to digging, excavator dynamics, capacity, optimization, specific energy consumption Scientific field: Mining Engineering Special scientific field: Mine and Energy Mechanization UDC: 621.879.44:622.271(043.3) 622.232:624.042:624.13(043.3) Sadrţaj ...
    ... excavator operation i.e. in the selection of the optimal type of cut and parameters of slices in order to reduce resistance to digging, reducing energy consumption and reducing the dynamic effects on the structure of the bucket wheel excavator. Current research of this issue, it was found that ...
    ... affect: reduction of mining resistance in materials with the increasing strength, increasing the capacity of the bucket wheel excavator, minimizing energy consumption and more favorable dynamic behavior of excavator structure. It is also the subject of this thesis, and the primary goal through conducted ...

  • Application of VIКOR method in the selection of an optimal splution of excavation “Borska Reka” ore deposit

    Sanja Bajić, Dragoljub Bajić, Branko Glušćević, Radmila Gaćina (2023)

  • Појава НИМБИ синдрома међу становништвом Лознице и околине услед планираних рударских активности

    Сара Арсенић (2024)
    Рад обрађује историјски развој нимбизма, његову анализу, природе и димензије, и његово превазилажење. Анализа се фокусира на планиране рударске активности у околини Лознице и њихов утицај на ставове локалног као и околног становништва и стручне јавности укључујући резултате испитивања јавног мњења кроз анкету. Анкета садржи тринаест питања и рађена је за три групе: становници Београда и околине, Лозница и оклоина и стручна јавност. Такође се и разматра како се различити политички и еколошки фактори манифестују у овом контексту, као ...
    нимби синдром, пројекат „Јадар“, отварање рудника, анкетирање јавног мњења
    ... examines how various political and environmental factors manifest in this context, as well as possibilities for overcoming nimbyism through public engagement and compensation for the population. Key words: nimby syndrome, "Jadar" project, mine opening, public opinion poll. Cnucak cyiuKa Cka 1: IIpBa ...

  • A bilingual digital library for academic and entrepreneurial knowledge management

    Ranka Stanković, Cvetana Krstev, Biljana Lazić, Dalibor Vorkapić (2015)
    A generic knowledge management process of organization, storage and retrieval of knowledge can suitably be fitted in a digital library. In the digital and knowledge age digital libraries can be used in knowledge management to handle intellectual assets and support knowledge creation. A multilingual digital library either stores content in more than one language or provides multilingual query access to monolingual content. In Serbia 18 of 308 scientific journals regularly published are bi-lingual, with papers simultaneously being in English ...
    Knowledge management, Digital library, Multilingualism, Language Resources, Terminology
    ... possible to simultaneously search through all available text collections). The user enters the search criteria in the search field, then adds additional criteria by clicking the “+” sign. Boolean operators “OR” and “AND” build the search query. “AND” is used for different search field categories ...
    ... (GeolISS) was financed by the Ministry of Environmental Protection during the period 2004–2006, and is presently maintained by Ministry of Mining and Energy. Many institutions working with geological data are using GeolISS. 4http://rudonto.rgf.bg.ac.rs/ is the system of ontologies developed for the mining ...

  • Razvoj integralnog modela za optimizaciju diskontinualnog sistema proizvodnje na površinskim kopovima nemetala

    Miodrag Čelebić (2024)
    Izbor optimalne mehanizacije u diskontinualnom sistemu transporta je jedna od najvažnijih odluka koju treba donijeti prilikom projektovanja površinskih kopova. Pri izboru optimalne mehanizacije, uticaj ima veliki broj faktora, kako prirodnih – geoloških i ekoloških, tako i tehničkih, ekonomskih i socijanih. Neki od njih se mogu izraziti numerički, u određenim mijernim jedinicama, a neki opisno, lingvističkim varijablama, shodno uslovima koji vladaju na rudnim ležištima, a koje karakterišu visok stepen neizvjesnosti i neodređenosti kako prilikom istraživanja, tako i tokom procesa eksploatacije ...
    izbor mehanizacije, tehnologija eksploatacije, diskontinualani sistem, ekspertsko odlučivanje, lingvističke varijable, MCDM, FAHP

  • Flood protection and water utilization of karst poljes: example of Gatačko Polje, Eastern Herzegovina

    Tina Dašić, Ljiljana Vasić (2020)
    Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry,Global and Planetary Change

  • Trace elements and garnet formation in a distal skarn zone: a case study of the Rudnik deposit, Central Serbia

    Bojan Kostić, Pavle Tančić, Natalija Batoćanin (2024)
    geohemija granata, retke zemlje, fluidne inkluzije, skarnovsko ležište Rudnik

  • Two approaches to compilation of bilingual multi-word terminology lists from lexical resources

    Branislava Šandrih, Cvetana Krstev, Ranka Stanković (2020)
    In this paper, we present two approaches and the implemented system for bilingual terminology extraction that rely on an aligned bilingual domain corpus, a terminology extractor for a target language, and a tool for chunk alignment. The two approaches differ in the way terminology for the source language is obtained: the first relies on an existing domain terminology lexicon, while the second one uses a term extraction tool. For both approaches, four experiments were performed with two parameters being ...
    Linguistics and Language,Software,Artificial Intelligence,Language and Linguistics

  • Influence of mono- and two-component organic modifiers on determination of lipophilicity of tetradentate Schiff bases

    Nikola Stevanović, Aleksandar Mijatović, Aleksandar Lolić, Mario Zlatović, Rada Baošić (2021)
    Ispitivani su uticaji primene mono- i dvokomponentnih organskih modifikatora na određivanje lipofilnosti 12 tetradentatnih Šifovih baza metodom reverzno-fazne tankoslojne hromatografije. Osnovni cilj je da se proceni tip interakcije između posmatranih jedinjenja i komponenti primenjenih hromatografskih sistema i uspostavi neki obrazac ponašanja kako bi se lakše izabrala kombinacija organskih modifikatora koji će simulirati interakciju u biološkim sistemima na osnovu činjenica da iste osnovne intermolekularne interakcije su odgovorne za ponašanje supstanci i u biološkom i u hromatografskom sistemu. Primenjeni organski modifikator ...
    Šifove baze, Lipofilnost, RP-TLC, Organski modifikatori

  • Microstructural and magnetic properties of electrospun hematite/cuprospinel composites

    Mira Ristić, Aleksandar Kremenović, Michael Reissner, Željka Petrović, Svetozar Musić (2020)
    Phase composition, microstructural and magnetic properties of electrospun hematite/cuprospinel composites were investigated. Samples were synthesized starting with 0 to 10 mol% of copper relative to iron. The round shape of reference electrospun fbres was preserved upon their heating up to 600 °C in air, whereas at 700 °C hollow substructure was additionally formed. In these reference samples the presence of hematite phase was detected by XRPD. A small amount (traces) of Fe3O4 /γ-Fe2O3 was also found, due to the ...
    Electrical and Electronic Engineering, Condensed Matter Physics, Atomic and Molecular Physics and Optics, Electronic, Optical and Magnetic Materials

  • 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)
    Paleontology, Stratigraphy, Ecology, Evolution, Behavior and Systematics

  • 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

  • Opremanje bušotine X zavojnom pumpom

    Milan Filipović (2024)
    Ovaj rad se bavi osnovnim pojmovima i karakteristikama zavojnih pumpi.Prikazan je sklop zavojnih pumpi i njena prateća oprema. Objašnjen je princip rada zavojnih pumpi kao i uloga svakog mašinskog elementa koji se nalazi u pumpi. Razmotrene su prednosti i nedostaci primene ovih primarnih mehaničkih metoda eksploatacije ugljovodonika. Dat je uvid u inovativna rešenja problematike primene zavojnih pumpi. Na konkretnom primeru bušotine X su prikazani problemi kao i rešenja primene ovih primarnih mehaničkih metoda u praksi. Napravljena je detaljna analiza ...
    zavojne pumpe, oprema, primarne mehaničke metode, ugljovodonici, analiza rada
    ... McGilvray, H. Fuchs, B. Ainebyona, P. Kyomugisha, S. Vijapurapu, N. Kagga, R. Rindfuss, Tullow Uganda Operations Pty Ltd; D. Basima, Ministry of Energy and Milerals Development of Uganda, "First Application of Progressive Cavity Pumps for Appraisal Well Testing in the Ugandan Albertine Graben Basnin" ...

  • 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
    ... gJ represents the Landé splitting factor. Compared to (1), equation (2) contains two additional elements: Mieff (an ‘effective magnetic number’, assigned to its corresponding Kramer’s doublet) and Ei (the energy gap between the ground (i = 0) and i th excited doublet). Effective magnetic numbers ...
    ... where gy represents the Landé splitting factor. Compared to (1), equation (2) contains two additional elements: Mier: (an ‘effective magnetic number’, assigned to its corresponding Kramer’s doublet) and E; (the energy gap between the ground (i = 0) and ith excited doublet). Effective magnetic numbers, Mere ...
    ... oxygen atoms. These bonds are slightly longer than the sum of ionic radii 2.78 Å (1.38 Å + 1.4 Å) for K+ cation with CN = 6 (Shannon, 1976). Additional three K1—O1 bonds of 3.032 (3) Å formed with the three oxygen atoms positioned in the upper triangular face, are slightly longer. These three ...

  • P-T analiza uglja RB Kolubara

    Rada Vitomir (2024)
    Rudarski basen Kolubara predstavlja jedno od najvažnijih ležišta lignita u Republici Srbiji i ključni je faktor u snabdevanju zemlje energijom. Kvalitet uglja iz ovog basena direktno utiče na efikasnost termoelektrana i zadovoljenje energetskih potreba. U ovom radu, opisan je značaj tehničke i elementarne analiza uglja kako bi se utvrdili fizičko-hemijski parametri uglja iz Rudarskog basena Kolubara. U drugom delu rada dat je opis P-T analize uglja i njen značaj za ocenu mogućnosti čišćenja uglja. Takođe, dati su i rezultati ...
    Rudarski basen Kolubara, pliva tona analiza, lignit, kvalitet uglja, energetska efikasnost
    ... na moguće pravce rešenja uočenih problema. 68 LITERATURA . Ahmaruzzaman, M. (2010). A review on the utilization of fly ash. Progress in energy and combustion science, 36(3), 327-363. . Bogdanović, V., Ilić, Z., & Polomčić, D. (2007). Izbor ograničenja i otvaranja površinskog. kopa Južno ...
    ... coal and biomass fired combustion systems: Progress and 69 challenges in the field of ash particle sticking and rebound behavior. Progress in energy and combustion science, 68, 65-168. 11. Kostović M., Industrijski procesi pripreme mineralnih sirovina, RGF, Beograd, 2015. 12.Larry, T. (2013) ...