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Упит dcterms_subject_txt: term extraction

180 items

  • Development of an integrated model for open-pit-mine discontinuous haulage system optimization

    Miodrag Čelebić, Dragoljub Bajić, Sanja Bajić, Mirjana Banković, Duško Torbica, Aleksej Milošević , Dejan Stevanović (2024)
    equipment selection, mine mechanization, expert judgment, linguistic variables, MCDM, FAHP

  • Hidrogeoekološki uslovi eksploatacije kamenih i mrkih ugljeva Srbije

    Branko R. Miladinović (2016-04-27)
    Ugalj predstavlja energent na čijoj osnovi se razvija privreda celog sveta.Zato mu se pridaje velika pažnja u eksploataciji i preradi, bez obzira na mnogeštetne uticaje na životnu sredinu, a posebno na efekat staklene bašte koji sestvara emisijom zagađujućih materija u atmosferu radom termoelektrana naugalj.U Srbiji, resurs koji se danas u najvećoj meri koristi u proizvodnjielektrične energije je ugalj i on učestvuje u proseku sa 70 %. U strukturi ukupneproizvodnje ugljeva, dominiraju lignitski ugljevi sa učešćem od 98 %, a ...
    Srbija, kameni i mrki ugalj, podzemna eksploatacija, preradauglja, rudničke vode, hemijski sastav, emisija zagađujućih materija, životnasredina
    ... and hard coal extraction in Serbia Branko R. Miladinović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Hidrogeoekološki uslovi eksploatacije kamenih i mrkih ugljeva Srbije;Hydrogeoecological conditions for black lignite and hard coal extraction in Serbia | ...
    ... 3) VI HYDROGEOECOLOGICAL CONDITIONS FOR BLACK LIGNITE AND HARD COAL EXTRACTION IN SERBIA S U M M A R Y Coal is a fossil fuel and one of the drivers of the global economy. Consequently, coal extraction and processing receive much attention, despite adverse environmental impacts ...
    ... BELGRADE FACULTY OF MINING AND GEOLOGY Branko R. Miladinović HIYDROGEOECOLOGICAL CONDITIONS FOR BLACK LIGNITE AND HARD COAL EXTRACTION IN SERBIA Doctoral Dissertatin Belgrade, 2015. I Mentor: Dr Ivan Matić, redovni profesor ...

  • Inhibitory effect of platinum and ruthenium bipyridyl complexes on porcine pancreatic phospholipase A2

    Tina Kamčeva, Jörg Flemmig, Bojana Damnjanović, Jürgen Arnhold, Aleksandar Mijatović, Marijana Petković (2011)
    Fosfolipaza pankreasa A2 (PLA2) igra važnu ulogu u ćelijskoj homeostazi kao iu procesu karcinogeneze. Efekti metalo-lekova koji se koriste kao hemoterapeutici na aktivnost ovog enzima nisu poznati. U ovom radu, interakcija između PLA2 svinjskog pankreasa i dva odabrana kompleksa prelaznih metala — tetrahloro(bipiridin) platine(IV) ([PtCl4(bipi)]) i dihloro (bipiridin) rutenijum(III)hlorida ([RuCl2(bipi)2) ]Cl)—proučavana je. Laserska desorpcija/jonizacija uz pomoć matriksa, vremenska masa spektrometrija (MALDI-TOF MS) i fluorescentna spektroskopija korišćeni su za analizu aktivnosti enzima u odsustvu i prisustvu metalnih kompleksa i za ...
    Metals and Alloys, Biochemistry, Biomaterials, Biophysics, Chemistry (miscellaneous)
    ... Calibration Standard I; Bruker Daltonics), while the data files were transferred to Flex Analysis version 2.4 (Bruker Daltonics) for automated peak extraction. Mass spectra recorded on a Voyager spectrometer were calibrated by setting the peak of the protonated DHB matrix to its appropriate value (155 ...

  • A Twitter Corpus and Lexicon for Abusive Speech Detection in Serbian

    Danka Jokić, Ranka Stanković, Cvetana Krstev, Branislava Šandrih (2021)
    Uvredljivi govor na društvenim medijima, uključujući psovke, pogrdni govor i govor mržnje, dostigao je nivo pandemije. Sistem koji bi bio u stanju da detektuje takve tekstove mogao bi da pomogne da internet i društveni mediji postanu bolji virtuelni prostor sa više poštovanja. Istraživanja i komercijalna primena u ovoj oblasti do sada su bili fokusirani uglavnom na engleski jezik. Ovaj rad predstavlja rad na izgradnji AbCoSER-a, prvog korpusa uvredljivog govora na srpskom jeziku. Korpus se sastoji od 6.436 ručno označenih ...
    uvredljivi jezik, govor mržnje, srpski, tviter, leksikon, korpus
    ... building the data-set of abusive language in Serbian. Further details about manual data annotation of corpus data are given in Section 2.2 while the extraction of abusive triggers is explained in Section 2.3. The Section 3 presents results of our research: Twitter data analysis (Subsection 3.1), the outcome ...
    ... inappropriate content and incitement to violence have gained importance. The concept of abusive speech, in the context of this paper, is an umbrella term for phenomena such as profanities, derogatory, and hate speech. One of the most cited definitions of hate speech comes from John T. Nockleby [44, 4] ...
    ... automatic abusive speech detection systems for the Serbian language. In the course of this work, we leveraged existing annotation schemes and abusive term definitions as much as possible with the aim of creating a general data set convenient for the detection of a broad range of abusive topics. We already ...

  • Application of a Method for Intelligent Multi-Criteria Analysis of the Environmental Impact of Tailing Ponds in Northern Kosovo and Metohija

    Gordana Milentijević, Blagoje Nedeljković, Milena Lekić, Zoran Nikić, Ivica Ristović, Jelena Đokić (2016)
    flotacijska jalovišta, životna sredina, višekriterijumska analiza, ekologija, Trepča
    ... often formed in areas which have other potential (agriculture, water supply, urban areas, water flows, etc.). In general, all material left after the extraction of minerals or after the process of exploitation is waste, which when dumped on the deposit spot creates the tailing pond [2]. Vast areas are covered ...

  • Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability

    Marija Živković, Dejan Ivezić (2021)
    Transformation of the heating sector is recognized as being essential for ensuring reliable and afordable energy services provided with reduced consumption of energy sources and diminished impact on the environment and less import dependency. The possibility of utilizing energy sources that otherwise would be wasted needs to be considered and treated as a big advantage of district heating systems. Despite many advantages, sewage wastewater heat is still a mostly unused resource at the global level and a totally unused ...
    рекуперација топлоте из отпадних вода, систем даљинског грејања, топлотне пумпе, енергетске уштеде, емисија угљендиоксида, енергетска безбедност, Србија
    ... heat to the jth consumer. The primary carbon dioxide emission coefficients are calculated by taking into account emissions that occur dur- ing extraction, processing/refining, storage, transport and combustion of the fuels. Since there are no national values for the primary carbon dioxide coefficients ...
    ... tion in heat pumps (HP) systems, whose operation is based on simple and proven technology (Hep- basli et al. 2014). Sewage waste heat is more long-term resilient comparing to industrial or excess heat (Averfalk et al. 2017). Despite all quoted advantages, wastewater heat is still a mostly unused ...

  • Influence of paleoenvironmental conditions on distribution and relative abundance of saturated and aromatic hydrocarbons in sediments from the NW part of the Toplica basin, Serbia

    Nikola Burazer, Aleksandra Šajnović, Nebojša Vasić, Milica Kašanin-Grubin, Dragana Životić, João Graciano Mendonça Filho, Predrag Vulić, Branimir Jovančićević (2020)
    Stratigraphy,Economic Geology,Geology,Geophysics,Oceanography

  • Процена емисије гасова са ефектом стаклене баште као последице енергетске активности

    Горана Остојић (2024)
    Рад се бави анализом и проценом емисија гасова са ефектом стаклене баште, са посебним акцентом на емисије које настају као последица енергетских активности. Ефекат стаклене баште представља природни процес који је неопходан за одржавање живота на Земљи, али антропогене активности, попут индустријске производње и сагоревања фосилних горива, значајно повећавају концентрацију ових гасова у атмосфери, што доводи до климатских промена. Рад истражује узроке, последице и могућности за смањење емисија гасова, као и развој стратегија за ублажавање негативних ефеката на животну ...
    емисија гасова, ефекат стаклене баште, енергетске активности, климатске промене, мобилно сагоревање, стационарно сагоревање
    ... as mechanical work to a process or for usec away from the apparatus. ustri Compnses emissions from fuels combusted by the fuel n Energylh ii extraction or energy-producing industnes. Sum of emisstons from main activity producers of clectricity generation, combined hcat and powcr gencration, and ...
    ... for thc producton of charcoal, bagasse, saw dust, cotton stalks and carbonizing of biofuels as well as fuel used for coal mining, oil and gas extraction and the processing and upgrading of natural gas. This category also icludes emissions from - processmng for CO,; capture and storage. Combuston ...

  • Multihazard Exposure Assessment on the Valjevo City Road Network

    Miloš Marjanović, Biljana Abolmasov, Svetozar Milenković, Uroš Đurić, Jelka Krušić, Mileva Samardžić Petrović (2019)
    Prirodni hazardi, izloženost, klizišta, poplave, bujice, GIS, R

  • 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
    ... for example in LEE et al., (2012), relatively com- plex algorithms are being engaged to check the sensitivity of a landslide susceptibility model. Extraction of a particular land- slide conditioning parameter and repetition of the validation pro- cess is one approach to test model sensitivity (LEE & TALIB ...

  • 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
    ... then centrifuged for 20 min at 3400× g, and supernatants were separated. The DK-I-60-3 was extracted from plasma and supernatants by solid-phase extraction using Oasis HLB cartridges (Waters Corporation, Milford, MA, USA). The cartridges were pre- Pharmaceutics 2021, 13, 1188 6 of 19 conditioned ...
    ... formulation and process parameter effects on particle size was conducted to obtain dispersions with small and uniform particle size and satisfactory short-term stability. Detailed physicochemical characterization was performed in order to obtain a closer insight into the morphology, physical state, solubility ...

  • 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

  • Sustainable Modularity Approach to Facilities Development Based on Geothermal Energy Potential

    Nataša Čuković-Ignjatović, Ana Vranješ, Dušan Ignjatović, Dejan Milenić, Olivera Krunić (2021)
    The study presented in this paper assessed the multidisciplinary approach of geothermal potential in the area of the most southeastern part of the Pannonian basin, focused on resources utilization. This study aims to present a method for the cascade use of geothermal energy as a source of thermal energy for space heating and cooling and as a resource for balneological purposes. Two particular sites were selected—one in a natural environment; the other within a small settlement. Geothermal resources come ...
    геотермална енергија, Панонски басен, геотермална каскада, енергетска ефикасност, бањски центри, балнеологија, биоклиматска архитектура, стратегије пасивног дизајнирања, модуларни објекти
    ... Economic Investigation. Appl. Sci. 2020, 10, 6639. [CrossRef] 2. Ilzarbe, J.M.B.; Malpartida, J.G.; Chandro, E.R. Recent Patents on Geothermal Power Extraction Devices. Recent Patents Eng. 2013, 7, 2–24. [CrossRef] 3. IRENA (International Renewable Energy Agency). Available online: https://www.irena.or ...

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

    Nikoleta Aleksić (2021)
    ... 1719–1726. https://www.ncbi.nlm.nih.gov/pubmed/?term=Fiedor%20E%5BAuthor%5D&cauthor=true&cauthor_uid=24365113 https://www.ncbi.nlm.nih.gov/pubmed/?term=Wr%C3%B3bel%20A%5BAuthor%5D&cauthor=true&cauthor_uid=24365113 https://www.ncbi.nlm.nih.gov/pubmed/?term=Milewicz%20T%5BAuthor%5D&cauthor=true&cauthor_ ...
    ... =24365113 https://www.ncbi.nlm.nih.gov/pubmed/?term=Falandysz%20J%5BAuthor%5D&cauthor=true&cauthor_uid=24365113 https://www.ncbi.nlm.nih.gov/pubmed/?term=Mundy%20WR%5BAuthor%5D&cauthor=true&cauthor_uid=25529470 https://www.ncbi.nlm.nih.gov/pubmed/?term=Eklund%20CR%5BAuthor%5D&cauthor=true&cauthor_ui ...
    ... =25529470 https://www.ncbi.nlm.nih.gov/pubmed/?term=Johnstone%20AF%5BAuthor%5D&cauthor=true&cauthor_uid=25529470 https://www.ncbi.nlm.nih.gov/pubmed/?term=Mack%20CM%5BAuthor%5D&cauthor=true&cauthor_uid=25529470 https://www.ncbi.nlm.nih.gov/pubmed/?term=Mack%20CM%5BAuthor%5D&cauthor=true&cauthor_uid=25529470 ...

  • Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes

    Jelena Malenović Nikolić, Dejan Vasović , Ivana Filipović , Stevan Mušicki, Ivica Ristović (2016)
    menadžment, rudrastvo i energetski kompleksi, okruženje, održivi razvoj, mrežno planiranje
    ... connection between air pollution and the health status of people during short-term and long-term exposure to toxic substances. Dust particles affect the functioning of the cardio-pulmonary system and can cause mortality due to long-term exposure [35], so analyses are carried out in relation to the concentration ...
    ... connection between air pollution and the health status of people during short-term and long-term exposure to toxic substances. Dust particles affect the functioning of the cardio-pulmonary system and can cause mortality due to long-term exposure [35], so analyses are carried out in relation to the concentration ...
    ... threats to the environment (n19), because they belong to the critical activities (Figure 8). Making proposals for changes in the adopted short-term and long-term objectives of environmental protection (n29) (prediction of risk), changes to the adopted environmental policy (n32), and changes in consumption ...

  • Hidrodinamička analiza procesa starenja bunara sa horzontalnim drenovima na beogradskom izvorištu podzemnih voda

    Đorđije M. Božović (2023)
    Predmet istraživanja doktorske disertacije su bunari sa horizontalnim drenovima beogradskog izvorišta podzemnih voda, drugog najvećeg izvorišta ovog tipa na svetu, čiji je režim rada opterećen procesima intenzivnog starenja prisutnog od samog početka formiranja izvorišta, početkom 1950‒ih godina. Istraživanja sprovedena u okviru izrade disertacije su imala za cilj definisanje nove metodologije izučavanja procesa mehaničkog i biohemijskog kolmiranja drenova izradom detaljnih 3D numeričkih hidrodinamičkih modela, upotrebom postojećih, dostupnih i široko rasprostranjenih računarskih programa. Istraživanja su realizovana simulacijom ostvarenog režima podzemnih voda ...
    modeliranje podzemnih voda, hidrauličke karakteristike drenova, koeficijent propusnosti drenova, prifilterska zona drena, hidraulički otpori na drenovima, kolmiranje drenova, ulazne brzine podzemnih voda, MODFLOW, CLN Package
    ... computer programs. The groundwater dynamics observed over a 15‒year period were simulated on the model. The wells, along with their groundwater extraction mechanism, were represented in real geometric, structural, and hydraulic terms, whereas the laterals were simulated using a mathematical (numerical) ...
    ... resulted in a proposal of an optimal, hydraulically representative, and hydrodynamically efficient methodology for defining the current groundwater extraction capacity of the laterals by quantifying the hydraulic properties of the laterals and the rate of advance of ageing processes by monitoring the ...
    ... DOI: 10.1016/j.quaint.2012.11.034 68 Gaudényi, T., Nenadić, D., Jovanović, M., Bogićević, K., 2014. The stratigraphical position and the use of the term Eopleistocene in Serbian geological literature. Quaternary International, 319, 150‒159. DOI: 10.1016/j.quaint.2013.04.012 69 Gaudényi, T., Nenadić ...

  • Multiple-Criteria Decision-Making in Mine Development Planning

    Sanja Bajić (2023)
    The Borska Reka ore deposit is an experimental location where developed methodologies have been applied. It is the largest ore body within the Bor mining complex, which has been the subject of numerous studies and analyses for more than three decades. The paper focuses on the application of FAHP and the VIKOR method to address ranking of alternatives and select the optimal mining method by means of fuzzy multicriteria optimization.

  • 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

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

    Vladimir Simić, Rade Jelenković, Dragana Životić (2019)
    ... respectively. Precipitation T T i 2016 2017 Long-term average Figure 11. Total precipitation during vegetation period of linseed, 2016-2017, Serbia. c i Temperature 21 –"// 20 –'// 19 –·"// ii –4/// · 17 1“'// r | ."// 2016 2017 Long-term average Figure 12. Total temperature during vegetation ...
    ... sites). Soil The greatest number of registered sources of localized soil pollution in Serbia is related to municipal waste disposal (39.9%), oil extraction and production (28%) and industrial and commercial activities (10.8%). Mining contributes 2.4 percent to soil contamination (Vidojević et al ...
    ... oilseed crop. The data refer to the most probable situation for the production of biodiesel in Serbia by a two stage process consisting of oil extraction from the pre-press cake of crushed seeds in an oil mill located in the vicinity of the biodiesel plant, and transesterification of oil into biodiesel ...

  • Model inteligentnog sistema adaptivnog upravljanja procesom prerade rude

    Ivana M. Jovanović (2016-01-13)
    U oblasti procesa prerade rude, flotacijska koncentracija predstavlja jednu od najznačajnijih i najčešće primenjivanih metoda separacije korisnih od nekorisnih minerala. Samim tim, veoma je važno osigurati uspešan rad flotacijskog postrojenja kroz dostizanje zadovoljavajućih tehno-ekonomskih pokazatelja. Cilj upravljanja procesom flotacijske koncentracije je upravo optimizacija kvaliteta i iskorišćenja korisne komponente u koncentratu uz maksimizaciju profita. Shodno tome, istraživanja na polju modelovanja i upravljanja ovim procesom zauzimaju značajno mesto u praksi kontolnog inženjenringa.Teorijska istraživanja u okviru doktorske disertacije obuhvatila su analizu položaja ...
    flotacijska koncentracija, modelovanje, upravljanje, inteligentni sistem, soft kompjuting, fazi logika, veštačke neuronske mreže
    ... Chemistry Research 35, pp. 4119–4127 85. Gui, W., Liu, J., Yang, C., Chen, N., Liao, X., 2013. Color co-occurrence matrix based froth image texture extraction for mineral flotation. Minerals Engineering 46–47, pp. 60–67 86. Gui, W., Chen, Z., He, M., Yang, C., 2014. Soft Sensor of Sulfur Flotation Froth ...
    ... in metallurgical plants – From an Xstrata perspective. Annual Reviews in Control 31, pp. 221–239 271. Tian, M.-L., Yang, J.-M., 2014. Improved Extraction Algorithm of Outside Dividing Lines in Watershed Segmentation Based on PSO Algorithm for Froth Image of Coal Flotation. Journal of Multimedia 9 ...
    ... n algorithm. ICIC Express Letters Part B: Applications, 4 (3), pp. 519–524 287. Wang, J.-S., Han, S., Shen, N.-N., Li, S.-X., 2014a. Features Extraction of Flotation Froth Images and BP Neural Network Soft-Sensor Model of Concentrate Grade Optimized by Shuffled Cuckoo Searching Algorithm. The Scientific ...