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Упит dcterms_subject_txt:deep well pump

932 items

  • Application of geophysical and multispectral imagery data for predictive mapping of a complex geo-tectonic unit: a case study of the East Vardar Ophiolite Zone, North-Macedonia

    Filip Arnaut, Dragana Đurić, Uroš Đurić, Mileva Samardžić-Petrović, Igor Peshevski (2024)
    General Earth and Planetary Sciences
    ... ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs Earth Science Informatics (2024) 17:1625–1644 https://doi ...
    ... such as Landsat 7 ETM +, Landsat 8, Landsat 9, or Sentinel-2, have been effectively employed for mapping lithology and geological structures in well-exposed geo- logical areas where spectral analysis is optimal (Aliyu et al. 2021; Lorenz 2004; Harris et al. 2005, 2008, 2009, 2014; Schetselaar ...
    ... various data. In this study, both RF and KNN were used to combine satellite multispectral data with geo- physical airborne and terrestrial data, as well as the distance to fault map, as features. Incorporating these data, particu- larly geophysical data (airborne and terrestrial), into ML predictions ...

  • Multi-word Expressions for Abusive Speech Detection in Serbian

    Ranka Stanković, Jelena Mitrović, Danka Jokić, Cvetana Krstev (2020)
    Ovaj rad predstavlja istraživanja na usavršavanju i unapređenju srpske verzije rečnika Hurtlex, višejezičnog leksikona uvredljivih reči. Posebnu pažnju posvećujemo dodavanju izraza sa više reči (polileksemskih jedinica) koji se mogu smatrati uvredljivim, jer su takvi leksički zapisi veoma važni za postizanje dobrih rezultata u mnoštvu zadataka otkrivanja uvredljivog jezika. Srpski morfološki rečnici se koriste kao osnova za čišćenje podataka i stvaranje rečnika. Istaknuta je veza sa drugim leksičkim i semantičkim resursima na srpskom jeziku i predviđena je izgradnja sistema za ...
    uvredljiv govor, govor mržnje, leksički izvori, višejezični leksikon, izrazi sa više reči
    ... 3(2):1277–1279. Endang Wahyu Pamungkas and Viviana Patti. 2019. Cross-domain and cross-lingual abusive language detection: A hybrid approach with deep learning and a multilingual lexicon. In Proceedings of the 57th Annual Meeting of the Association for Computational Linguistics: Student Research Workshop ...
    ... Gracia and B. Klimek, pages 48–56. Ranka Stanković, Branislava Šandrih, Cvetana Krstev, Miloš Utvić, and Mihailo Škorić. 2020. Machine Learning and Deep Neural Network-Based Lemmatization and Morphosyntactic Tagging for Serbian. In Proceedings of The 12th Language Resources and Evaluation Conference ...
    ... ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs Joint Workshop on Multiword Expressions and Electronic Lexicons ...

  • Tectonic evolution of the Vršac Mts. (NE Serbia): Inferences from field kinematic and microstructural investigations

    Uroš Stojadinović, Nemanja Krstekanić, Bojan Kostić, Marija Ružić, Aleksa Luković (2021)
    The Vršac Mts. in NE Serbia represent the key area to investigate structural relations between the Northern Serbo-Macedonian Subunit and Supragetic Unit of the Dacia Mega-Unit. The geodynamic events during the Variscan orogeny in the Late Paleozoic colligated the two units and led to their metamorphic differentiation. The Late Cretaceous extension exhumed the medium-grade Serbo-Macedonian metamorphic rocks and structurally juxtaposed them against the low-grade metamorphosed basement of the Supragetic Unit along an E-dipping shear zone, which outcrops in the ...
    severna srpsko-makedonska subjedinica, supragetikum, kinematska analiza, multifazna ekstenzionalna deformacija
    ... grade conditions. Other indicators of medium grade conditions are twinning and perthitic growth of feldspars (Fig. 5a). In contrast with these, the well-developed sericiti- zation in orthoclase (Fig. 5a) can indicate slight retrograde metamorphic changes. Muscovite and biotite form spaced foliation ...
    ... changed to chlorite (Fig. 5d). Undulose extinction, dominant bulging recrystallization, and local sub-grain rotation in quartz and feldspar grains, as well as the mineral assemblage with retrograde chlorite indicate that the shearing event occurred at temperatures of ~400–450 °C and 0.3–0.5 GPa, indicating ...
    ... extension was governed by the retreat of the Dinaridic slab (Matenco & Radivojević 2012; Andrić et al. 2018). However, the effects of this exten- sion, as well as the associated exhumation significantly decrease E-wards and NE-wards going from the Adria margin towards the margin of Europe (Krstekanić et al ...

  • The application of ArcGIS for assessing the potential of solar energy in urban area: The case of Vranje

    Boban Pavlović, Milica Pešić-Georgiadis (2019)
    In order to determine the solar energy potential for a specified location, it is crucial to consider the latitude, altitude, slope, terrain morphology, atmospheric conditions, etc. Such a complex calculation and mapping of solar energy can be done using the ArcGIS geoprocessing tool, named Area Solar Radiation (ASR). By using the ASR tool, supported with the adequate input data, it is possible to calculate the maximum solar radiation energy (irradiation) for a defined area and for a specified time ...
    Obnovljivi izvori energije, potencijal solarne energije, GIS, mapiranje solarnog potencijala
    ... ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs 12% International Conference on Energy and Climate Change, ...
    ... geothermal, is marginal (Lewis M., 2018). The estimated potential can have a considerable contribution to the lesser utilization of fossil fuels, as well as the improvement of the environment. The biomass potential amounts to approximately 3.4 Mtoe per year (2.3 Mtoe per year is unused, and 1.1 Mtoe ...
    ... promotion of energy generated from RES and set mandatory national goals for share of renewable energy in gross final consumption of energy (27%) as well as the share of energy from RES in transport (10%) by 2020 (Republic of Serbia, 2016). Considering all the aforementioned, it can be concluded ...

  • 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
    ... ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs electronic reprint ISSN: 2052-5206 journals.iucr.org/b ...
    ... its magnetic properties. Analysis of the magnetization data revealed the positions of the three lowest crystal field levels of the Yb3+ cations, as well as the corresponding projections of their angular momentum on the direction of the magnetic field. 1. Introduction Awide range of optical and magnetic ...
    ... et al., 2003). In this work we demonstrate that a second ambient- temperature modification of K3YbSi2O7 with P63/mmc symmetry can be prepared as well (�-K3YbSi2O7). Crystal structures of these two ambient-temperature polymorphs consist of the same building units: Si2O7 groups and YbO6 polyhedra ...

  • Репозиторијум дигиталних идентификатора објеката – доиФил: изградња, стање и перспективе

    Милош Утвић, Михаило Шкорић (2017)
    Филолошки факултет Универзитета у Београду је крајем јула 2015. године склопио уговор са агенцијом Crossref и тиме стекао право да својим публикацијама додељује дигитални идентификатор објекта (DOI), као и публикацијама других издавача које заступа. Истовремено, у склопу уговора, Филолошки факултет је развио репозиторијум доиФил који за све регистроване публикације чува њихове библиографске метаподатке, хипервезу ка комплетном тексту и сам DOI. После припремних радњи и разраде процеса на којима је заснован рад репозиторијума, у новембру 2016. године је репозиторијум доиФил ...
    DOI, дигитални идентификатор објекта, Crossref, Филолошки факултет
    ... ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs 75 БИБЛИОИНФО Доц. др Милош Утвић1 Универзитет у Београду2 ...
    ... аутоматски обрађују. Важни предуслови аутоматске обраде XML-докумената попут наведеног (Слика 1) јесу да документ мора бити добро форми- ран (енг. well-formed) и валидан у односу на задату XML-шему, у овом случају спецификацију коју је дефинисао Crossref8. Иако студенти Катедре за библиотекарство ...

  • Application of ERT in the study of debris-flow source area: Case study Selanac debris flow

    Dragana Đurić, Jelka Krušić, Biljana Abolmasov (2021)

  • Značaj izvodjenja Proktorovog opita na komunalnom otpadu

    Jovana Janković, Dragoslav Rakić, Tina Đurić, Irena Basarić Ikodinović, Laslo Čaki (2019)
    Komunalni otpad predstavlja jedan od ključnih problema današnjice. U Srbiji je najčešći vid odlaganja otpada na komunalne deponije i zbog toga je bitno ispravno i sigurno ga skladištiti. Zbijanje komunalnog otpada predstavlja jednu od osnovnih komponenti procesa odlaganja. Kako bi se što bolje predvidelo ponašanje komunalnog otpada neophodno je pre zbijanja na terenu laboratorijski odrediti maksimalnu suvu zapreminsku težinu i optimalnu vlažnost. U dosadašnjoj praksi u svetu za to se koristi standardizovan Proktorov opit. U radu će biti prikazani ...
    komunalni otpad, zbijanje, deponija, Proktorov opit
    ... ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs See discussions, stats, and author profiles for this publication ...

  • Zbirka rešenih zadataka iz termodinamike

    Marija Živković, Aleksandar Madžarević (2023)
    termodinamika
    ... ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs Univerzitet u Beogradu Rudarsko-geološki fakultet Beograd ...

  • A Model for Determining the Dependability of Continuous Subsystems in Coal Mines Using the Fuzzy Logic Approach

    Nikola Stanić, Miljan Gomilanović, Petar Marković, Daniel Krzanović, Aleksandar Doderović, Saša Stepanović (2024)
    This study presents a unique model for assessing the dependability of continuous parts of combined systems in open-pit mining through the application of fuzzy logic. Continuous sub-systems as part of the combined system of coal exploitation in surface mines have the basic function of ensuring safe operation, high capacity with high reliability, and low costs. These subsystems are usually part of the thermal power plant’s coal supply system and ensure stable fuel supply. The model integrates various independent partial ...
    fuzzy logic, max-min composition, continuous part of combined system (CCS), open pit, mining, dependability

  • 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

  • Evaluation And Perspectives Of Underground Coal Mines In Serbia

    Vladimir Milisavljević, Milena Lekić, Ivica Ristović, Vojin Čokorilo, Aleksandar Cvjetić (2017)
    ... ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs EVALUATION AND PERSPECTIVES OF UNDERGROUND COAL MINES ...

  • Geostatički proračuni sanacije klizišta šipovima

    Slobodan Ćorić, Dragoslav Rakić, Dušan Berisavljević (2019)
    U ovom radu su, polazeći od rezultata geotehničkih istraživanja, prikazani geostatički proračuni sanacije klizišta vertikalnim šipovima. Metodologija proračuna je složena, jer podrazumeva interakciju klizišta i stabilizirajućih šipova. Stoga se simultano analiziraju stabilnost klizišta i stabilnost šipova. Prilikom određivanja bočne otpornosti tla oko šipova koristi se metoda Brinč Hansena koja uzima u obzir trodimenzionalne uslove u tlu i može da se primeni u složenim geološkim uslovima koji su česti u Srbiji. Analize stabilnosti klizišta vrše se odgovarajućim metodama granične ravnoteže. ...
    sanacija klizišta, interakcija klizišta i šipa, bočna otpornost šipova, stabilnost klizišta i šipova
    ... ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs See discussions, stats, and author profiles for this publication ...

  • William „Strata” Smith, otac engleske geologije– 250 godina od rođenja

    Dejan Radivojević (2019)
    Smit, stratigrafija, godišnjica
    ... ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs 85 Z A P I S N I C I S R P S K O G G E O L O [ K O G ...

  • Zaštita od miniranja

    Suzana Lutovac, Miloš Gligorić (2024)
    Miniranje

  • 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

  • Hyperpycnites within the Devonian-Carboniferous flysch of the Carpatho-Balkanides (Kostadinovica, eastern Serbia)

    Miloš Radonjić (2020)
    This study presents new discoveries of vascular plants and the trace fossil Dictyodora liebeana (GEINITZ) from the Devonian–Carboniferous Kučaj-Zvonce flysch of the Carpatho-Balkanides and the implications of this fossil association for its sedimentary setting. The occurrence of the described plant debris in a deep-marine environment indicates the presence of hyperpycnites within the siliciclastic turbidites exposed at the Kostadinovica locality. The sedimentological data and the characteristics of the fossil material support the proposed model in which the sediment was at ...
    Mississippian flora, Dictyodora liebeana (GEINITZ), hyperpycnites, Kučaj-Zvonce flysch, Carpatho-Balkanides
    ... Kostadi- novica section is the trace fossil (Fig. 10) Dictyodora liebeana (GEINITZ) which is interpreted as a post-depositional deep-tier pascichnion found in Mississippian deep-sea environments (e.g. SEILACHER, 2007; CALLOW & MCILROY, 2011; UCHMAN & WETZEL, 2011). Its occurrences are often described ...
    ... Phanerozoic history of deep-sea trace fossils.– In: MCILROY, D. (ed.): The Application of Ichnology to Palaeoenvironmental and Stratigraphic Ana- lysis.– Geological Society London, Special Publications, 228, 125–139. doi: 10.1144/ GSL.SP.2004.228.01.07 UCHMAN, A. & WETZEL, A. (2011): Deep-sea ichnology: The ...
    ... high river discharge into the basin they represent an efficient mechanism of transfer of clastic material from continen- tal environments to the deep-marine realms (MULDER & SY- VITSKI, 1995). The characteristics of hyperpycnites (deposits of hyperpycnal flows) are distinctive both in their sed ...

  • 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)

  • Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду

    главни и одговорни уредник Душан Поломчић (2016)
    Рударско-геолошки факултет
    ... Др ВЕСЕЛИН БАТАЛОВИЋ, редовни професор BATALOVIC V., 2010: Erosive Wear Model of Slurry Pump Impeller. Journal Of Tribology-Transactions Of The Asme, vol. 132, br. 2. BATALOVIC V., 2010: Slurry Pump Impeller Wear: Testing. Journal Of Tribology- Transactions Of The Asme, vol. 132, br. 3. DANILOVIC ...
    ... Journal, 38 (2), 11–101. MILENIC D., VASILJEVIC P., VRANJES A., 2010: Criteria for Use of groundwater as renewable energy source in geothermal heat pump systems for building heating/cooling purposes. Energy and Buildings, 42 (5), 649–657. MILENIC D., KRUNIC O., MILANKOVIC DJ., 2012: Thermomineral ...
    ... СТРУЧНИХ РАДОВА НАСТАВНИКА И САРАДНИКА ФАКУЛТЕТА 385 BATALOVIC V., DANILOVIC D., KAROVIC MARICIC V., 2011: Hydraulic Lift Sistems with Piston Type Pump. Journal of Petroleum Science and Engineering, Volume 78, 267–273. DANILOVIĆ D., KAROVIĆ M. VESNA, ŠEĆEROV SOKOLOVIĆ R., IVEZIĆ D., ŽIVKOVIĆ M. ...

  • Developing Termbases for Expert Terminology under the TBX Standard

    http://drug.rgf.bg.ac.rs/s/repo/item-set/522 (2014)
    ... ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs ❉❡✈❡❧♦♣✐♥❣ ❚❡r♠❜❛s❡s ❢♦r ❊①♣❡rt ❚❡r♠✐♥♦❧♦❣② ✉♥❞❡r t❤❡ ❚❇❳ ...
    ... l for Serbian and multilingual with Serbian as one of the languages. In this paper we describe the approach to develop- ment of these termbases, as well as the role of the TermBase eXchange (TBX) standard in this approach. Namely, paying special attention to portability, simple and speedy transformation ...
    ... data model also defined by ISO. In this paper we describe an approach to development of termbases for the field of mining engineering and geology, as well as the role of the TBX standard in this approach. In the next section we give an outline of three terminological resources developed at the University ...