Претрага
910 items
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Procena aktivnosti upravljanja održavanjem opreme za dubinsko bušenje nafte i prirodnog gasa
Iva Filipov (2024)Primarni fokus održavanja je sprečavanje zastoja u radu, koji može dovesti do značajnih finansijskih gubitaka. Redovne provere i monitoring performansi opreme omogućavaju pravovremeno otkrivanje problema i smanjenje rizika od havarija. U ovom kontekstu, korišćenje naprednih tehnologija, poput softverskih alata za upravljanje održavanjem, igra značajnu ulogu u optimizaciji procesa. Osim tehničkog održavanja, obuka osoblja o pravilnoj upotrebi opreme i sigurnosnim procedurama je od suštinskog značaja. Efikasna komunikacija između članova tima i jasne smernice za rad doprinose smanjenju rizika i povećanju produktivnosti. Upravljanje održavanjem takođe zahteva analizu troškova, kako bi ...... primenjenog načina bušenja. (1) 10 _ . ' . • . . ( . ~ - > _ , , x ~ a e uay==enuII_L_AALAALJAAL_ALALJAN– ~ | _ S o m a v v v v v u k k z u n I N n u u u ž N NNNNNNNA / s „ , : Š Slika 3 Uprošćena šema bušaće garniture 11 3. PROCES ODRŽAVANJA OPREME ...Iva Filipov . Procena aktivnosti upravljanja održavanjem opreme za dubinsko bušenje nafte i prirodnog gasa, 2024
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Mineralni i hemijski sastav čestica u atmosferi zone Kolubarskog basena i uticaj na životnu sredinu
Željko R. Cvetković (2013-11-18)Čestice iz vazduha su prikupljane u blizini termoelektrane i površinskih kopovarudnika uglja u Kolubarskom basenu. Izmereni srednji sadržaji koncentracija rastvornih,nerastvornih i ukupnih taložnih materija na godišnjem nivou prelaze 200 mg/m2dan (K-1, K-3, K-4, K-5). Distribucija čestica na svim lokacijama klasifikovana je na česticeveličine veće od 10 μm, zatim na čestice veličine od 10 μm do 2,5 μm i klase česticaveličine ispod 2,5 μm. Ovakva podela je dala odnos koncentracija inhalatornih irespiratornih čestica po mernim mestima. Skenirajuća elektronska mikroskopija jepokazala ...mineral, četica, prašina, leteći pepeo, aerosediment, PM10, teški metali,koncentracija, veličina čestice, Kolubara... profesor – docent, naučna oblast – fundamentalna i primenjena mineralogija, Univerzitet u Beogradu, Rudarsko – geološki fakultet. dr Ljiljana Jakšić, redovni profesor, naučna oblast – hemija, Univerzitet u Beogradu, Rudarsko – geološki fakultet. Datum ...
... savetima i sugestijama tokom istraživanja koji su uticali na interpretaciju delova doktorske disartacije. Prijatna mi je dužnost da se zahvalim dr Ljiljani Jakšić na svim korisnim savetima u delu hemijskih proučavanja i pomoć prilikom interpretacije delova doktorske disartacije. Hvala docentu dr ...
... 50 60 70 80 JL 1 0 A V P R 1 0 JL P R 1 0 JN P R 1 0 M JP R 1 0 A P R 1 0 A 1 0 M P R 1 0 A V 1 0 JN 1 0 M J1 0 M 1 0 A 2 _ 5 J L 2 _ 5 A V 2 _ 5 J N 2 _ 5 M J2 _ 5 ...Željko R. Cvetković. "Mineralni i hemijski sastav čestica u atmosferi zone Kolubarskog basena i uticaj na životnu sredinu" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2013-11-18)
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Mineralni i hemijski sastav čestica u atmosferi zone Kolubarskog basena i uticaj na životnu sredinu
Željko R. Cvetković (2013-11-18)Čestice iz vazduha su prikupljane u blizini termoelektrane i površinskih kopovarudnika uglja u Kolubarskom basenu. Izmereni srednji sadržaji koncentracija rastvornih,nerastvornih i ukupnih taložnih materija na godišnjem nivou prelaze 200 mg/m2dan (K-1, K-3, K-4, K-5). Distribucija čestica na svim lokacijama klasifikovana je na česticeveličine veće od 10 μm, zatim na čestice veličine od 10 μm do 2,5 μm i klase česticaveličine ispod 2,5 μm. Ovakva podela je dala odnos koncentracija inhalatornih irespiratornih čestica po mernim mestima. Skenirajuća elektronska mikroskopija jepokazala ...mineral, četica, prašina, leteći pepeo, aerosediment, PM10, teški metali,koncentracija, veličina čestice, Kolubara... profesor – docent, naučna oblast – fundamentalna i primenjena mineralogija, Univerzitet u Beogradu, Rudarsko – geološki fakultet. dr Ljiljana Jakšić, redovni profesor, naučna oblast – hemija, Univerzitet u Beogradu, Rudarsko – geološki fakultet. Datum ...
... savetima i sugestijama tokom istraživanja koji su uticali na interpretaciju delova doktorske disartacije. Prijatna mi je dužnost da se zahvalim dr Ljiljani Jakšić na svim korisnim savetima u delu hemijskih proučavanja i pomoć prilikom interpretacije delova doktorske disartacije. Hvala docentu dr ...
... 50 60 70 80 JL 1 0 A V P R 1 0 JL P R 1 0 JN P R 1 0 M JP R 1 0 A P R 1 0 A 1 0 M P R 1 0 A V 1 0 JN 1 0 M J1 0 M 1 0 A 2 _ 5 J L 2 _ 5 A V 2 _ 5 J N 2 _ 5 M J2 _ 5 ...Željko R. Cvetković. "Mineralni i hemijski sastav čestica u atmosferi zone Kolubarskog basena i uticaj na životnu sredinu" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2013-11-18)
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Vodosnabdevanje podzemnim vodama u Srbiji-stanje i perspektive
Dušan Polomčić, Zoran Stevanović, Petar Dokmanović, Petar Papić, Vesna Ristić-Vakanjac, Bojan Hajdin, Saša Milanović, Dragoljub Bajić (2011)... Matić, D. Milenić: Istorijski razvoj, položaj i perspektive Departmana za hidrogeologiju 3. D. Polomčić, Z. Stevanović, P. Dokmanović, P. Papić, V. Ristić Vakanjac, B. Hajdin, S. Milanović, D. Bajić: Vodosnabdevanje podzemnim vodama u Srbiji – stanje i perspektive 4. D. Milenić, M. ...
... podzemnih voda na tržištu Srbije (zastupljeniji brendovi) 0 50 100 150 200 250 2002 2003 2004 2005 2006 2007 2008 2009 2010 Godina P la sm a n v o d e u m il . li ta ra Knjaz Miloš BB Minaqua Voda Vrnjci Rosa ��������� Prolom voda Heba Voda voda � �� ���� Mivela Jazak Slika ...
... improvement of the status of groundwater in Serbia, Proceedings of IWA Specialist Groundwater Conference, Invited Paper, pp.81-101, Belgrade 4. Dragišić V., Polomčić D. (2006): Elaborat o rezervama podzemnih voda sa izvorišta „Sava I” za vodosnabdevanje opštine Ruma. Rudarsko-geološki fakultet. Beograd ...Dušan Polomčić, Zoran Stevanović, Petar Dokmanović, Petar Papić, Vesna Ristić-Vakanjac, Bojan Hajdin, Saša Milanović, Dragoljub Bajić. "Vodosnabdevanje podzemnim vodama u Srbiji-stanje i perspektive" in Naših 40 godina, Beograd : Rudarsko-geološki fakultet (2011): 49-77
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Tectonic fabric as the main factor for privileged groundwater pathways, discharge regime and thermal properties within the same karstic system of Vidlic Mt. (Serbia)
Stevanović Zoran, Ristić-Vakanjac Vesna, Milanović Saša, Vasić Ljiljana, Petrović Branislav, Čokorilo Marina (2013)Stevanović Zoran, Ristić-Vakanjac Vesna, Milanović Saša, Vasić Ljiljana, Petrović Branislav, Čokorilo Marina. "Tectonic fabric as the main factor for privileged groundwater pathways, discharge regime and thermal properties within the same karstic system of Vidlic Mt. (Serbia)" in Book of abstracts of the International Symposium on Hierarchical Flow Systems in Karst Regions KARSTFLOW 2013, Budapest, :IAH (2013): 132
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Engineering regulation of karst aquifer as a response to minimal flows in sensitive areas
Stevanović Zoran, Milanović Saša, Dokmanović Petar, Ristić-Vakanjac Vesna, Petrović Branislav, Vasić Ljiljana (2013)Stevanović Zoran, Milanović Saša, Dokmanović Petar, Ristić-Vakanjac Vesna, Petrović Branislav, Vasić Ljiljana. "Engineering regulation of karst aquifer as a response to minimal flows in sensitive areas" in Proceedings of Intern. conf. “Waters in sensitive and protected areas”, 13-15 June 2013, Zagreb, Brussels:European Water Association (2013): 109-112
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Influence of alkali ion on the properties of alkali activated slag
Nikolić Irena, Janković Častvan Ivona, Radmilović Vuk, Karanović Ljiljana, Mentus Slavko, Radmilović Velimir. (2014)Nikolić Irena, Janković Častvan Ivona, Radmilović Vuk, Karanović Ljiljana, Mentus Slavko, Radmilović Velimir.. "Influence of alkali ion on the properties of alkali activated slag" in Sixteenth Annual Conference YUCOMAT 2014 O.S.E.1, Herceg Novi, Montenegro: (2014): 11
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Adaptation and migration measures for sustainable use of karst groundwater as a response on climate change - Eastern Serbia case example
Stevanović Zoran, Dokmanović Petar, Milanović Saša, Ristić-Vakanjac Vesna, Polomčić Dušan, Vasić Ljiljana (2013)Stevanović Zoran, Dokmanović Petar, Milanović Saša, Ristić-Vakanjac Vesna, Polomčić Dušan, Vasić Ljiljana. "Adaptation and migration measures for sustainable use of karst groundwater as a response on climate change - Eastern Serbia case example" in Proceedings of International Conference Climate Change Impacts on Water Resources, Beograd:Water Resources Jaroslav Černi Institute for the Development (2013): 243-250
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Characterization of the medieval pottery from the Studenica monastery, Serbia, a UNESCO world heritage site
Ljiljana Damjanović,Srna Stojanović, Vesna Bikić, Ivana Radosavljević Evans, Suzana Erić, Kristina Šarić (2017)Ljiljana Damjanović,Srna Stojanović, Vesna Bikić, Ivana Radosavljević Evans, Suzana Erić, Kristina Šarić. "Characterization of the medieval pottery from the Studenica monastery, Serbia, a UNESCO world heritage site" in 15th Conference & Exhibition of the European Ceramic Society – EcerS2017, Budapest, Hungary, July 9-13, 2017. Book of abstracts, Budapest: (2017): 653-653
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Characterization of the medieval pottery from the Studenica monastery, Serbia, a UNESCO world heritage site
Ljiljana Damjanović,Srna Stojanović, Vesna Bikić, Ivana Radosavljević Evans, Suzana Erić, Kristina Šarić (2017)Ljiljana Damjanović,Srna Stojanović, Vesna Bikić, Ivana Radosavljević Evans, Suzana Erić, Kristina Šarić. "Characterization of the medieval pottery from the Studenica monastery, Serbia, a UNESCO world heritage site" in 15th Conference & Exhibition of the European Ceramic Society – EcerS2017, Budapest, Hungary, July 9-13, 2017. Book of abstracts, Budapest: (2017): 653-653
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Influence of alkali cation on the mechanical properties and durability of fly ash based geopolymers
Nikolić Irena, Zejak Radomir, Častvan Janković Ivona, Karanović Ljiljana, Radmilović Vuk, Radmilović Velimir. (2013)Nikolić Irena, Zejak Radomir, Častvan Janković Ivona, Karanović Ljiljana, Radmilović Vuk, Radmilović Velimir.. "Influence of alkali cation on the mechanical properties and durability of fly ash based geopolymers" in Acta Chimica Slovenica 60, Hajdrihova 19; Ljubljana, 1000; Slovenia:Slovensko Kemijsko Drustvo (2013): 636-643
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Improved compressive strength of alkali activated slag upon heating
Nikolić Irena, Karanović Ljiljana, Častvan Janković Ivona, Radmilović Vuk, Mentus Slavko, Radmilović Velimir. (2014)Nikolić Irena, Karanović Ljiljana, Častvan Janković Ivona, Radmilović Vuk, Mentus Slavko, Radmilović Velimir.. "Improved compressive strength of alkali activated slag upon heating" in Materials Letters 133, Radarweg 29; Amsterdam, 1043 NX; Netherlands:Elsevier BV (2014): 251-254. https://doi.org/org/10.1016/j.matlet.2014.07.0
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Simulacija isticanja odabranih karstnih vrela pirotske kotline
Saša Milanović, Branislav Petrović, Vesna Ristić Vakanjac, Ljiljana Vasić, Veljko Marinović, Petar Vojnović (2022)Analiza recesije, autokorelaciona i kroskorelaciona analiza vremenskih serija padavina i isticanja podzemnih voda karstnih vrela Krupac i Gradište (Stara planina, JI Srbija) izvršena je radi formiranja stohastičkog autoregresivno-krosregresivnog modela (ARCR) i kratkoročne prognoze dnevnih vrednosti izdašnosti. Usled postojanja heterogenosti i anizotropnosti karstne izdani veoma je komplikovano i zahtevno odrediti prostornu distribuciju podzemnih voda u okviru karstnog hidrogeološkog sistema, te je primenljivost determinističkih modela minimizirana. Stoga je upotreba stohastičkog modela u ovom slučaju svrsishodnija. Autokorelogram izdašnosti vrela Krupac pokazao je ...Saša Milanović, Branislav Petrović, Vesna Ristić Vakanjac, Ljiljana Vasić, Veljko Marinović, Petar Vojnović. "Simulacija isticanja odabranih karstnih vrela pirotske kotline" in Vodoprivreda, Српско друштво за одводњавање и наводњавање, Београд, Академија инжењерских наука Србије (2022)
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Karst aquifer impact on the formation of surface runoff: case study of the Resava River catchment, Serbia
Marina Mitrašinović, Vesna Ristić Vakanjac, Veljko Marinović, Saša Milanović, Ljiljana Vasić, Dušan Polomčić (2022)The paper compares the flow regimes of the Resava River at the gauging stations of the Manasija Monastery (upper course) and the town of Svilajnac (lower course). The hydrological analysis encompasses a multiyear period of monitoring (1982–2020). The water budget and baseflow index are assessed for the catchment areas monitored by the Svilajnac station (683 km2) and the Manasija Monastery station (358k m2), considering the overall monitoring period and characteristic years. The results indicate that the specific runoff in ...... of surface runoff: case study of the Resava River catchment, Serbia Marina Mitrašinović, Vesna Ristić Vakanjac, Veljko Marinović, Saša Milanović, Ljiljana Vasić, Dušan Polomčić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Karst aquifer impact on the formation ...
... of surface runoff: case study of the Resava River catchment, Serbia | Marina Mitrašinović, Vesna Ristić Vakanjac, Veljko Marinović, Saša Milanović, Ljiljana Vasić, Dušan Polomčić | National Conference with International Participation “GEOSCIENCES 2022” | 2022 | | http://dr.rgf.bg.ac.rs/s/repo/item/0008445 ...
... HIOBbpXHOCTHH5I OTTOK: IIpHiMep C B0JIO0COopa Ha peKa PecaBa, Cbpoasu Marina Mitrašinović, PFesna Ristić Pakanjac, Peljko Marinović, Saša Milanović, Ljiljana Pasić, Dušan Polomčić Mapuna Mumpauunoduu, Becna Pucmuu BakKanuau, Benxo Mapunoauu, Caaa Munanoduu, Jlunana Bacuu, /[yuian IfonomMuuu University ...Marina Mitrašinović, Vesna Ristić Vakanjac, Veljko Marinović, Saša Milanović, Ljiljana Vasić, Dušan Polomčić. "Karst aquifer impact on the formation of surface runoff: case study of the Resava River catchment, Serbia" in National Conference with International Participation “GEOSCIENCES 2022”, Sofia : Bulgarian geological society (2022)
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Prirodno prečišćavanje i stimulisana bioremedijacija podzemnih voda zagađenih naftnim ugljovodonicima
Nenad M. Marić (2016-09-26)Disertacija se konceptualno sastoji iz dva dela kojima je obuhvaćen pasivan (prirodnoprečišćavanje) i aktivan remedijacioni pristup (stimulisana bioremedijacija) kodpodzemnih voda zagađenih naftnim ugljovodonicima.U prvom delu disertacije prikazani su rezultati osmatranja procesa prirodnogprečišćavanja u podzemnim vodama na lokaciji istorijskog zagađenja kerozinom.Tragovi zagađenja naftnim ugljovodonicima pronađeni su 20 godina nakon prosipanjakerozina. Ovo je stvorilo osnovu za proučavanje efekata dugotrajne izloženostipodzemnih voda procesima biodegradacije u terenskim uslovima. Uočeno je da sesnižene koncentracije elektron akceptora (O2, NO3-, SO42-) i povišene koncentracijemetaboličkih produkata biodegradacije ...... Sadržaj merkaptana % (m/m) mах 0,0030 Određivanje karakteristika destilacije Na 10 °C/% max 205 Kraj °C/% max 300 Ostatak % (v/v) max 1,5 Gubitak % (v/v) max 1,5 Kinetička viskoznost na -20 °C (mm2/s) mах 8,000 Tačka paljenja u zatvorenom sudu (°C) min 38 Neto specifična energija (MJ/kg) ...
... sam zadovoljstvo da sarađujem sa većinom profesora i kolega istraživača sa Departmana za hidrogeologiju. Posebno se zahvaljujem dr Jani Štrbački i Ljiljani Vasić na pomoći u fazi obrade podataka i pripremi disertacije. Na iskrenoj prijateljskoj pomoći pri realizaciji terenskih istraživanja zahvalan ...
... Beograd. 16. Beškoski V, Gojgić - Cvijović G, Milić J, Ilić M, Miletić S, Šolević T, Vrvić MM (2011) Ex situ bioremediation of a soil contaminated by mazut (heavy residual fuel oil) - a field experiment. Chemosphere 83, 34–40. 17. Beškoski V, Gojgić-Cvijović G, Milić J, Ilić V, Miletić S, Jovančićević ...Nenad M. Marić. "Prirodno prečišćavanje i stimulisana bioremedijacija podzemnih voda zagađenih naftnim ugljovodonicima" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-09-26)
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Insights into dike nucleation and eruption dynamics from high-resolution seismic imaging of magmatic system at the East Pacific Rise
Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Mladen R. Nedimović, Juan Pablo Canales, Hélène D. Carton, John C. Mutter, Javier Escartín (2023)Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Mladen R. Nedimović, Juan Pablo Canales, Hélène D. Carton, John C. Mutter, Javier Escartín. "Insights into dike nucleation and eruption dynamics from high-resolution seismic imaging of magmatic system at the East Pacific Rise" in Science Advances, American Association for the Advancement of Science (AAAS) (2023). https://doi.org/10.1126/sciadv.adi2698
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An aproach to Implementation of blended learning in a university setting
... system will be elaborated. One of the goals to be realized is also a fully adapted access to Moodle for mobile clients. LITERATURE [1] Devedzic, V., Education and The Semantic Web, International Journal of Artificial Intelligence in Education (IJAIED), Vol.14, No.2, pp.39-65, 2004. [2] Paulsen ...
... Physics Education, in: Technology Education and Development, Aleksandar Lazinica and Carlos Calafate (eds.), InTech, pp.107-121, 2009. [5] Devedžić V., Semantic Web and Education, Springer, 2006. [6] Bouzeghoub, A. Elbyed, A., Ontology Mapping for Web-Based Educational Systems Interoperability ...
... Contents: the AquaRing Approach, JE-LKS, Journal of e-Learning and Knowledge Society — Vol.5, No.1, pp.211-220, 2009. [8] Mitrović, A., Devedžić, V., A model of multitutor ontology-based learning environments, International Journal of Continuing Engineering Education and Lifelong Learning, Vol ...Ivan Obradović, Ranka Stanković, Olivera Kitanović, Jelena Prodanović . "An aproach to Implementation of blended learning in a university setting" in Proceedings of the Second International Conference on e-Learning, eLearning 2011, September 2011, Belgrade, Serbia, Belgrade : Belgrade Metropolitan University (2011)
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The Dictionary of the Serbian Academy: from the Text to the Lexical Database
In this paper we discuss the project of digitization of the Dictionary of the Serbo-Croatian Standard and Vernacular Language. Scanning and character recognition were a particular challenge, since various non-standard character set encoding was used in the course of the almost 60-year long production of the dictionary. The first aim of the project was to formalize the micro-structure of the dictionary articles in order to parse the digitized text of and transform it into structured data stored in relational lexical database. This approach ...... instance, preferred forms) are introduced after appropriate abbreviations: исп. for испореди ‘compare’; 4. definitions are descriptive or referential (в. for види ‘see’), in rare cases synonyms; 5. definitions are supplemented by the lists of: 1. synonyms (after abbreviation син. for синоним ‘synonym’); ...
... gramm. data м item in a list Etymology palaiós kainós Open parenthesis + item in a list, e.g. „(грч.“ closing parenthesis Sense 1, 2, 3 or а, б, в or I, II or trigger begin terminological markers геол. item in a list trigger begin linguistic/markers / item in a list trigger begin related words ...
... Stijović, R., Sabo, O., Stanković, R. (2017). Rečnik SANU kao baza terminoloških rečnika (na primeru Rečnika kulinarstva) u: Piper, P., Jovanović, V. (eds.), Slovenska terminologija danas, Beograd: Srpska akademija nau- ka i umetnosti, 2017, pp. 229–241. [The dictionary of the SASA as a basis of t ...Ranka Stanković, Rada Stijović, Duško Vitas, Cvetana Krstev, Olga Sabo. "The Dictionary of the Serbian Academy: from the Text to the Lexical Database" in Proceedings of the XVIII EURALEX International Congress: Lexicography in Global Contexts, Ljubljana : Ljubljana University Press, Faculty of Arts (2018)
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Application of the Fuzzy Model in the Evaluation and Selection of Hydraulic Excavators on Open-Pit Lignite Mine
Stevan Đenadić, Miloš Tanasijević, Vladimir Milisavljević, Dragan Ignjatović, Predrag Jovančić (2021)The production of lignite in large open-pit mines is mainly performed with continuously operating equipment, where bucket-wheel excavators, bucket-chain excavators, belt conveyors, and spreaders are the basic machines. Smaller machines, usually of discontinuous operating nature, are commonly categorized as auxiliary machines. This paper presents the research related to the analysis of auxiliary machine parameters with the case study for a hydraulic excavator. The purpose of the analysis was to develop a model of rating quality of service of the ...Stevan Đenadić, Miloš Tanasijević, Vladimir Milisavljević, Dragan Ignjatović, Predrag Jovančić. "Application of the Fuzzy Model in the Evaluation and Selection of Hydraulic Excavators on Open-Pit Lignite Mine" in SSRN Electronic Journal, Elsevier BV (2021). https://doi.org/10.2139/ssrn.3945617
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Optimization and Analysis of Drilling and Blasting Parameters Using O-Pitblast Software
The development of modern technologies has enabled the application of specialized softwares in the field of mining through various segments and processes, including in works related to drilling and blasting. The application of specialized software for drilling and blasting with the use of modern technologies such as photogrammetry enabled more accurate data from the field for later processing. By processing data and creating a 3D model of the terrain for drilling and blasting works, it can obtain precise data, ...Stefan Milanović, Nikola Simić, Lazar Kričak, Milanka Negovanović, Nikola Đokić. "Optimization and Analysis of Drilling and Blasting Parameters Using O-Pitblast Software" in Podzemni radovi, Beograd : Rudarsko-geološki fakultet (2024)