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Упит dcterms_subject_txt:могућност коришћења УПГ-а у Србији

4193 items

  • Pannonian Basin, Pannonian Basin System and Pannonian realm - three different concepts

    Dejan Radivojević (2019)
    Centralni Paratetis, neogen, Panonski basen, Sistem panonskog basena, Panonska oblast
    ... Панонска област – три различита концепта Дејан Радивојевић Универзитет у Београду, Рударско-геолошки факултет Иако је простор именован као Панонски басен са палеогеографског аспекта дефинисан од стране вон Тегелд-а пре више од што година његова употреба је и даље контроверзна са аспекта временских ...
    ... до дефинитивног прекида сваке конекције са јужним реликтом Тетиса – Медитераном које се десило у време горњег миоцена (панона). У том периоду наш део Панонског басена је прошао кроз континенталну фазу у време доњег миоцена и морску (баден) и морско-бракичну (сармат) током средњег миоцена. Након ...
    ... седиментима из правца северозапада, североистока и југоистока. У ранијим фазама истраживања геолози су простор Панонског басена посматрали у ужем смислу као место депоновања неогених и квартарних седимената. Након тога обзиром да се депозиција у неком басену не може посматрати одвојено од извора седимената ...

  • Production of electricity from coal-fired power plants and accompanying CO2 emissions: comparison of EU-27 and US

    Uroš Djorgovski, Aleksandar Madžarević, Predrag Jovančić (2023)
    Even in the third decade of the 21st century, large power plants are still responsible for more than half of the electricity production in Europe and US. They predominantly use fossil fuels in their work, which results in the emission of pollutants into the air, soil and water. In addition to the production of electric energy, fossil fuels, including coal, are used for industrial purposes. Although the use of coal, especially in the countries of the European Union, is ...
    CO2, емисија, угаљ, термоелектрана, САД, ЕУ-27
    ... el ec tr ic it y pr od uc ti on [% ] NE-U- .F T.E B SB- OB OB .BO""BS OB :Ba"0"| a aBšš e )0)00] 95 2855d45S E I I I 2R IR e a 88,868888B8B8aBaaBBSB BBB BSBaVBT.a s eee q a tc a Flectricity generation from coal —Coal [%] Figure ...
    ... ——LFU-27 <——=US 0 eo w i e T T n o u 00 miuČ- O T W i m TO O ~ 0 O O a eNeon E:o:u: ' o e i e oč reeo oeezkžjjBNj“”oZa B e e e eoeo>o S Wwe e esA Č e!đ e RT NTe ı.I I K TTKR OT G Figure 2. Ratio of specific electricity production in EU-27 a US Nevertheless, based on the ...
    ... pr od uc ti on [% ] 0,0 -- B F.G S-O-S T.O BBB .B -00 85B85BššŠ e a 82 – I I I I I RI :N-BR:Bo-Bo-O5-Bo-o5-Bo:Bso:BOB:Oo5-50:Bo-S0:o-B5-G0:-Bo-B5o:BeB: - Q e q RRRR RRRGSKSSSGSGSGS lss Total electricity generation u Flectricity generation from coal —Coal [%] Figure 5. US electricity production ...

  • Modeling and Monitoring of Karst System as a Base for its Evaluation and Utilization - a Case Study from Eastern Serbia

    Milanović Saša, Stevanović Zoran, Vasić Ljiljana, Ristić-Vakanjac Vesna (2011)

  • 3D modeling and monitoring of karst system as a base for its evaluation and utilization: a case study from eastern Serbia

    Milanović Saša, Stevanović Zoran, Vasić Ljiljana, Ristić-Vakanjac Vesna (2014)

  • Melt evolution beneath a rifted craton edge: 40Ar/39Ar geochronology and Sr-Nd-Hf-Pb isotope systematics of primitive alkaline basalts and lamprophyres from the SW Baltic Shield

    Tappe Sebastian, Smart Katie A., Stracke Andreas, Romer Rolf, Prelević Dejan, van den Bogaard Paul (2016)

  • Novi koncept izrade Osnovne hidrogeološke karte Srbije

    Igor Jemcov, Zoran Stevanović, Vladimir Živanović, Saša Milanović, Dušan Polomčić, Veselin Dragišić (2022)
    Osnovna hidrogeološka karta (OHGK) predstavlja bazični dokument u hidrogeologiji, a ima za cilj sagledavanje osnovnih tipova izdani što da omogućava sagledavanje podzemnih vodnih resursa na području obuhvaćenom kartom. Primena postojećeg Uputstva za izradu Osnovne hidrogeološke karte SFRJ 1:100.000 (iz 1984, odnosno 1988. godine), vezana je za brojne poteškoće, što je uslovilo da je u proteklom periodu od 30 godina bilo je više inicijativa za formiranjem novog Uputstva. Sagledavajući postojeću situaciju uz činjenice o savremenim trendovima razvoja hidrogeoloških karata u ...
    Osnovna Hidrogeološka Karta, koncept izrade OHGK, harmonizovana legenda OHGK

  • 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 ...
    hydrogeological characteristics, water regime, water balance, karst aquifer, Resava catchment area
    ... years, when the mean annual discharge was Š L Š . er\ o% H a s |y FNN| FEJ šoo[ - }ž ŽZO i š E 20 L 10 % j | 5 s t-] 5 Š 5 t |3 5 5 t-i Š k k - - -j |j k_ -i -j -i -i e E SBSBSSBS BBB R B B G B BBB a dii 0 š . a bvu.ž·ižšjžrgozn |—g.s. at Manasija Monastery —-g:5. at Svilajnac ...
    ... karst groundwater reserves. In contrast, after a hcavy rainfall in the lower catchmcnt, the soil likely becomes saturated and causes swelling of the clay component of the Miocenc sedimcnts, forming. a less permcable sur- face layer during such periods and a large portion of the rainfall runs off to ...
    ... Monastery than at Svilajnac. There are several possible rcasons for this, primarily the use of surface water for a farmland irrigation, which is more intensive in dry years. Also, a higher rate of the groundwater abstraction during such periods lowers thc water table and intensifies aquifer rc- ...

  • Long-term rockslope monitoring and rockfall prediction

    Miloš Marjanović, Biljana Abolmasov, Marko Pejić, Jelka Krušić (2021)

  • Optimization and Analysis of Drilling and Blasting Parameters Using O-Pitblast Software

    Stefan Milanović, Nikola Simić, Lazar Kričak, Milanka Negovanović, Nikola Đokić (2024)
    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, ...
    optimizacija, 3D model, bušenje, miniranje, O-Pitblast, softver

  • Mitigating hydrate formation in onshore gas wells: A case study on optimization techniques and prevention

    Milica Ješić, Bojan Martinović, Stefan Stančić, Miroslav Crnogorac, Dušan Danilović (2023)
    Gas wells, particularly those situated onshore, play a vital role in the global energy sector by supplying a significant portion of natural gas. However, operational challenges, notably gas hydrate formation, pose substantial issues, leading to complications such as flowline blockages and unexpected well shutdowns. Gas hydrates, crystalline structures resembling ice, ...
    Gas Well, Gas Hydrate Formation, Well Modeling, Well Performance Optimization, Choke Position Adjustments, Methanol Injection

  • Age of the Jurassic hemipelagic sediments from the Ljubiš area (Zlatibor Mt., SW Serbia)

    Nikita Bragin, Nevenka Đerić (2020)
    Radiolaria, Dinarides, Jurassic, stratigraphy, Serbia
    ... GARFAGNOLI, F., HRVATOVIĆ, H., KRSTIĆ, M., LEVI, N., MALASOMA, A., MARRONI, M., MENNA, F., NIRTA, G., PANDOLFI, L., PRINCIPI, G., SACCANI, E., STOJADINOVIĆ, U. & TRIVIĆ, B. (2011): The Geology of the Zlatibor-Maljen area (Western Serbia): A Geotraverse across the Ophiolites of the Dinaric-Hellenic c ...
    ... Therefore, we have to esti­ mate a wide stratigraphic range for this sample – Bajocian to Callovian. Sample 15-10-8 is characterized by a poor and badly pre­ served radiolarian assemblage. The age could not be determined because it contains only Campanomitra? sp. A sensu O’DOGHERTY, GORIČAN & GAWLICK ...
    ... GAWLICK et al. (2016), were dated by a better preserved radiolarian assemblage (Callovian to Middle Oxfordian age). GAWLICK et al. (2017) re­ ported a latest Bajocian to middle Oxfordian age from the Ljubiš Figure 5. Outcrops of the Ljubiš Formation in Djokov Potok. A – grey bedded radiolarites intercalated ...

  • Data from the Digital Repository of the Faculty of Mining and Geology in eScience (eNauka)

    Biljana Rujević, Mihailo Škorić (2024)
    The paper describes linking the Digital Repository of the University of Belgrade, Faculty of Mining and Geology, with the eScience system in terms of transferring metadata about the results of researchers' scientific work. The steps taken to ensure a smooth harvesting of metadata are outlined. Additionally, a presentation of additional improvements to the OAI system is provided, aiming to contribute to the automatic linking of authors with their results in the eScience system.
    репозиторијуми, еНаука, метаподаци, Рударско-геолошки факултет

  • Examination of the possibility of obtaining pyrite concentrate from the flotation tailings of the Lece mine

    Predrag Lazić, Đurica Nikšić, Dejan Stojanović, Tamara Stojanović (2022)
    Рудник Леце је карактеристичан по томе што у флотацијским концентратима олова и цинка као корисну примену има злато и сребро. Практично од отварања рудника и флотације трају истраживања и борба за што боље технолошке показатеље на сва четири платива метала (олово, цинк, злато и сребро) посебно на злату. Овај рад представља допринос тој борби у циљу повећања искоришћења злата. Како је начин појављивања злата веома различит (самородно, са оловом и цинком, са пиритом и кварцом) то је и технолошка ...
    Флотација Леце, концентрат пирита, злато, сребро

  • Održivi razvoj rudarskog sektora

    Vladimir Pavlović, Dragan Ignjatović, Tomislav Šubaranović (2022)
    Imajući u vidu sve veću zabrinutost za stanje životne sredine i socioekonomsku nejednakost, sektorska održivost bez obzira na privrednu delatnost, privlači sve veću pažnju kako globalno tako i lokalno. U tom smislu postoji konsenzus kod svih zainteresovanih strana da čovečanstvo treba da usvoji mere za promenu trenutno neodrživih obrazaca proizvodnje i potrošnje. Rudarska industrija igra fundamentalnu ulogu u ovom kontekstu, privlačeći pažnju kroz različite inicijative tokom poslednjih decenija. Neke od njih su čak i primenjene u praksi ali konsenzus ...

  • Early–Middle Jurassic brachiopods from Ponor Mountain, Western Balkan Mountains, Bulgaria; taxonomy, biostratigraphy and occurrence in the context of the early Toarcian Oceanic Anoxic Event

    Barbara V. Radulović, Lubomir S. Metodiev, Neda Motchurova-Dekova, Platon Tchoumatchenco (2023)
    Brachiopods, taxonomy, biostratigraphy, early Toarcian Anoxic Event, Bulgaria

  • Geotehnički aspekti izgradnje visećeg pešačkog mosta u Starom gradu u Užicu

    Zoran Berisavljević, Miloš Marjanović, Uroš Đurić (2023.)
    U radu su prikazani rezultati geotehničkih istraživanja za potrebe izgradnje visećeg pešačkog mosta preko klisure reke Đetinje u Užicu. Predviđeno je da most, sistema prednapregnute trake, omogući prelaz pešacima sa desne dolinske strane na stranu Starog grada, koja je opasana strmom liticom (cca. 40 m visine). Za potrebe formiranja geotehničkog modela i strukturnog sklopa krečnjačke stenske mase korišćen je postupak fotogrametrijskog snimanja dronom. Predviđeno je da se zatežuća sila (od oko 30 MN), koju most prenosi na obalni stub, ...
    fotogrametrija, stabilnost kosina, pukotine, prednapregnuta sidra, test granične nosivosti, paker (Ližonov) test
    ... parametara stenske mase u delu sidrišne deonice. Faktor oštećenja stenske mase je usvojen konzervativno kao D=0.7 za čitavu stensku masu. a)|”| Slika 6. Rezultati laboratorijskih ispitivanja a) triaksijalni opit, b) uzorak U-1 injekcione mase (UCS=29MPa), c) uzorak krečnjaka u opitu indirektnog zatezanja ...
    ... degrees: 71to 67 degrees: 67 to -19 degrees: -19 to -22 degrees: -22 to -90 degrees: || J u| "| u| " |a | Slika 8. Rezultati proračuna stabilnosti a) faktor sigurnosti prema MKE, b) pomeranja u zoni stuba, c) faktor sigurnosti prema MGR i anizotropni model krečnjaka Nakon prihvatanja sile ...
    ... misije snimanja kako bi se što bolje pokrilo područje od interesa ı sa što manje mrtvih uglova na generisanom modelu. U prvoj misiji napravljeno je 344 snimaka, u drugoj 242, a u trećoj 155. Snimanje je vršeno manuelno krećući se letelicom gore-dole po vertikalama na udaljenosti od 10-15 m od stene ...

  • 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 ...
    karstno vrelo, recesija, autokorelacija, kroskorelacija, ARCR MA model, JI Srbija

  • Analysis of a simplified model for determining rock mass oscillation velocity at the Kovilovača open pit

    Suzana Lutovac, Miloš Gligorić, Jelena Majstorović, Luka Crnogorac (2023)
    ... 07:20:34 Analysis of a simplified model for determining rock mass oscillation velocity at the Kovilovača open pit Suzana Lutovac, Miloš Gligorić, Jelena Majstorović, Luka Crnogorac Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Analysis of a simplified model ...
    ... fortotalof 11 data (there is a strong correlation between R and y , given in the Equation (12)). • model3: ,= 0.8513 fortotalof 11 data (there is a strong correlation between R and y , given in the Equation (13)). • model4: op, =0.9852 fortotalof 12 data (there is a strong correlation between R ...
    ... obtained presenting rock mass oscillation velocities of the depending on a reduced distance. The calculated corresponding indexes of the curved line correlation point out that there is a rather strong curved line relationship between a reduced distance and the rock mass oscillation velocity expressed in ...

  • Numerical simulation of the Late Jurassic closure of the Vardar Tethys

    Nikola Stanković, Vesna Cvetkov, Vladica Cvetković (2021)
    ... simulations (previous interim results reported in EGU2020-5919). The aim of our numerical study is to test the hypothesis that a single eastward subduction in theJurassic is a valid explanation for the occurrence of three major, presently observed geologicalentities that are left behind after the closure ...
    ... performed by solving a set of partialdifferential equations: the continuity equation, the Navier-Stokes equations and the temperatureequation. To this end we used I2VIS thermo-mechanical code which utilizes marker in cellapproach with finite difference discretization of equations on a staggered grid [Gerya ...
    ... at amid-oceanic ridge. Intraoceanic subduction is initiated along the ridge by assigning a weak zonebeneath the ridge. Time-dependent boundary conditions for velocity are imposed on thesimulation in order to model a transient spreading period. The change of sign in plate velocities isfound to be useful ...

  • 2D Numerical Simulation of Intraoceanic Subduction during the Upper Jurassic Closure of the Vardar Tethys

    Nikola Stanković, Vesna Cvetkov, Vladica Cvetković (2020)
    ... simulations (previous interim results reported in EGU2020-5919). The aim of our numerical study is to test the hypothesis that a single eastward subduction in theJurassic is a valid explanation for the occurrence of three major, presently observed geologicalentities that are left behind after the closure ...
    ... performed by solving a set of partialdifferential equations: the continuity equation, the Navier-Stokes equations and the temperatureequation. To this end we used I2VIS thermo-mechanical code which utilizes marker in cellapproach with finite difference discretization of equations on a staggered grid [Gerya ...
    ... at amid-oceanic ridge. Intraoceanic subduction is initiated along the ridge by assigning a weak zonebeneath the ridge. Time-dependent boundary conditions for velocity are imposed on thesimulation in order to model a transient spreading period. The change of sign in plate velocities isfound to be useful ...