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Упит dcterms_creator_txt:Gordana D. Rađen

1074 items

  • Tehnika i tehnologija izrade koso-usmerenih i horizontalnih lateralnih bušotina za potrebe odvodnjavanja površinskih kopova

    Мitrović Vladimir, Dimitrijević Bojan, Stupar Jelka (2010)

  • A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)

    Jelena Ratković, Dušan Polomčić, Dragoljub Bajić, Bojan Hajdin (2016)
    ... Ratković J., Polomčić D., Bajić D., Hajdin B. FILIPOVIĆ, I. et al. (1976) National geological map of Serbia, scale 1:100,000, Obrenovac section (L 34-125). Belgrade: Geological, Hydrogeological, Geophysical and Geotechnical Research Institute - Geozavod. JAGODIĆ KRUNIĆ, D. and JOVIČIĆ, V. (2007) ...
    ... Belgrade: Yugoslav Opencast Mining Committee, pp. 259-266. POLOMČIĆ, D. et al. (2013b) Hydrodynamic characteristics of water supply source „Peštan“ (Lazarevac, Serbia). Vodoprivreda, 45, pp. 55-68. POLOMČIĆ, D., BAJIĆ, D. and ILIĆ, Z. (2014) Implementation of alternative forecasting hydrodynamic ...
    ... 293-300. 54 Ratković J., Polomčić D., Bajić D., Hajdin B. THE AMERICAN SOCIETY FOR TESTING AND MATERIALS (2016) Available from: http://www.astm.org/DATABASE.CART/WITHDRAWN/D5447.htm [Acessed 23/11/16]. ŠUBARANOVIĆ, T., PAVLOVIĆ, V. and POLOMČIĆ, D. (2013) Influence on environment of sealing ...

  • O mogućnosti proizvodnog reaktiviranja ležišta cementnih laporaca Ralja kod Beograda

    Ilić M., Kričak Lazar, Jagodić-Krunić D., Podunavac D. (2014)

  • Procena poroznosti i litologije na osnovu geofizičkih merenja u severoistočnoj Rumuniji

    Manja Grifatong (2024)
    Geofizička karotažna merenja imaju važnu ulogu u određivanju fizičkih i geoloških svojstava delova Zemljine kore. Cilj ovog rada je da se prikaže procena poroznosti i litoloških karakteristika formacije na osnovu rezultata geofizičkih karotažnih merenja. Na osnovu dostupnih podataka izrađeni su dijagrami promene poroznosti sa dubinom i krosplot dijagrami neutronska poroznost – srednja gustina za dve bušotine koje se nalaze na Moldavskoj platformi, u severoistočnoj Rumuniji. Na osnovu ovih dijagrama određene su zone povećane poroznosti i litologija formacija kroz koje ...
    karotaž gustine, neutronski karotaž, dijagram promene poroznosti, kros- plot dijagram
    ... označene kao potencijalno gasonosne, dok su ostale verovatno zasićene vodom. Krosplot dijagrami neutronske poroznosti ıi srednje gustine analizirani su radi utvrđivanja litoloških karakteristika formacija. Analiza je pokazala sledeće: u obe bušotine identifikovane su relativno čiste zone peska ı peščara ...
    ... Poroznost ovakve formacije se procenjuje na osnovu izraza: đ = Pm-_D . 4 Pm-(SwPw+Sopo) ( ) SREDNJA VREDNOST GUSTINE g/cm? 20 22 24 26 28 L h d š F-} 5 O __POROZNOST JEZGRA % Pma= 2.68 g/em'(kvarc) pn= 1.1 g/cm\slana voda) KAROTAŽGUSTINE - * S0m: |ROZNOST IZMFRENAJČ NA JEZGRIMA ...
    ... GR q 0 API 100| |0.3 —0.1 \», Krečnjak s " •, z···: ,\·mle· @ ı ONGR KJ | E šji [] | r r i & q Krečnjak sa Al 21"'/•'\mlr @ Krečnjak a (D i ag ., Efekti i Fdatnika WR Z ugljovodonika Žicrečnjak si ('> 30% nahte. ) () i Krečnjak sa } Il·•/.l\.··•lr @ ““ = \ “* Dolomit ss @ ...

  • Application of pulsed flash thermography method for specific defect estimation in aluminum

    Tomić Ljubiša D, Jovanović Dalibor B, Karkalić Radovan M, Damnjanović Vesna, Kovačević Branko V, Filipović Dalibor D, Radaković Sonja S. (2015)

  • Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)

    Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Richard Spikings, Andreas Wetzel (2016)
    General Earth and Planetary Sciences
    ... deformation stages D, and D, resulted in the formation of folded drawn boudin trains in Ordovician meta-argillites (Fig. 11). The boudin trains were initially formed in the extensional domain of D, strain ellipsoid and were subse- quently folded by simple shearing during D, (Fig. 11b). Spaced ...
    ... order. Variscan Orogeny First deformation stage D, Evidence of deformation stage D, is generally scarce, as the resulting structures have been strongly overprinted during the subsequent deformation stage D,. Structures formed during D, were documented in both the Lower Complex (e.g. Fig ...
    ... constraining a maximum age of D, to the lower Emsian (ca. 408 + 3 Ma; Cohen et al. 2013). Mini- mum age constraints on D, could not be clearly defined, but it certainly predates the onset of the deformation stage D, which is discussed below. Second deformation stage D, Penetrative foliation S» ...

  • A Knowledge-Based Approach to Mine Ventilation Planning in Yugoslav Mining Practice

    Nikola Lilić, Ivan Obradović, Ranka Stanković (2002)
    Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper, we ...
    ... a ir - st o p p in g w it h d o o r - m ai n f an F ig . 1 4 . T h e a ir d is tr ib u ti o n o b ta in ed b y st a n d a rd m et h o d . M in . R es . E n g . 2 0 0 2 .1 1 :3 6 1 -3 8 2 . D o w n lo ad ed f ro m w w w .w o rl d sc ie n ti fi c. co m b y U N ...
    ... .1 1 :3 6 1 -3 8 2 . D o w n lo ad ed f ro m w w w .w o rl d sc ie n ti fi c. co m b y U N IV E R S IT Y O F A L B E R T A o n 0 4 /2 6 /1 5 . F o r p er so n al u se o n ly . 364 N. Lilić, I. Obradović & R. Stanković CF D INV E NT S Data acquisition ...
    ... - st o p p in g w it h d o o r - m ai n f an F ig . 1 1 . T h e ca n o n ic a l v en ti la ti o n sc h em e o f th e “ S o k o ” co a l m in e. M in . R es . E n g . 2 0 0 2 .1 1 :3 6 1 -3 8 2 . D o w n lo ad ed f ro m w w w .w o rl d sc ie n ti fi c. co m b y ...

  • 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 ...
    Fuzzy theory, hydraulic excavator, selection, quality of service, asset management

  • 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

  • Zoniranje buke na površinskom kopu Polje D" u RB " Kolubara"

    Zoran Radović (2011)
    Buka, zoniranje, površinski kop Polje" D u RB "Kolubara"."

  • Analiza i rešavanje problema pogona rotora rotornog bagera SRs2000 – put ka modernizaciji

    Dragan Novaković, Predrag Jovančić (2017)
    Ovaj rad ima primarni cilj da definiše modernizaciju i revitalizaciju pogonske grupe rotora bagera SRs 2000 kako bi se obezbedilo povećanje pouzdanosti bagera, a time i povećanje vremenskog i kapacitetnog iskorišćenja i smanje troškovi održavanja. Sekundarni cilj, i ne manje važan, je unifikacija elemenata kako pogonske grupe tako i ostalih sklopova predviđenih za buduću modernizaciju i revitalizaciju na svim bagerima SRs 2000 koji rade na površinskim kopovima Elektroprivrede Srbije.
    Rotorni bager SRs 2000, modernizacija, pogon rotora

  • Triassic rift-type basalts and related deep-water sediments in the western ophiolite belt of the Hellenides-Dinarides (from Othrys Mts., Greece to Darno Hill, NE Hungary)

    Palinkaš L., Kovacs S., Molnar F., Haas J., Jozsa S., Dosztaly L., Gulacsi Z., Kiss G., Kover S., Ozsvart P., Mikes T., Halamić J., Hravtovič H., Sudar Milan, Jovanović D., Đerić Nevenka, Migiros G, Papanikolau D., Tselepidis V. (2010)

  • Identification of alginite and bituminite in rocks other than coal: results of Round Robin Exercises of the Identification of Dispersed Organic Matter Working Group of the ICCP

    Kus J., Araujo C.V., Borrego A.G., Flores D., Hackley P.C., Hámor-Vidó M., Kalaitzidis S., Kommeren C.J., Kwiecińska B., Mastalerz M., Mendonça Filho J.G., Menezes T.R., Misz-Kennan M., Nowak G.J., Petersen H.I., Rallakis D., Suárez-Ruiz I., Sýkorová I., Životić Dragana (2017)

  • Uslovi formiranja oticaja reke Crnice

    Andjelija Glogovac (2024)
    Sliv reke Crnice zauzima područje centralnog dela Srbije, između opštine Paraćin na zapadu, Sisevačkog basena na istoku, sliva Ravanice na severu i Jovaničke reke na jugu.Režimski parametri sliva reke,površine od 289 km2 kontrolišu se na hidrološkoj stanici Paraćin, dok su sa ciljem analize režima i uticaja padavina na formiranje oticaja preuzeti podaci o padavinama sa meteorološke stanice Ćuprija.Na razmatranom području dominantnu ulogu ima karsni tip izdani, koga karakteriše nestabilan režim u u pogledu oscilacija izdašnosti i nivoa podzemnih voda ...
    režim voda, autokorelacija, kroskorelacija, bilans voda, klimatske promene, reka Crnica
    ... epizoda. 100 70 90 60 80 = 70 = % Š s E 6 40 s 50 S 5 4 ž 30 ž Hi 30 Š 20 20 10 10 ”| 0 O ı ~~ — O D D O D . D D i O VOA 9 ' P 9 9 O 9 O a dt d d dP d de de „ de d” d j9 „P P 9 9 9 P P 9 P P b KO K RAA I V L K K J A I I JČO v O J a ŽŽ h Y hh y Y Ž O a o OL . J ME O 8a KA IOJ Slika ...
    ... 69 0.97 0.677 | 0.768 | 0.780 Slika 6.2. Prelo Grze (slikao D. Milanović) (preuzeto Slika 6.3. Peći preliv na vrelu Grze (slikao D. iz Ristić, 2007) Milanović) (preuzeto iz Ristić, 2007) Slika 6.4. Izvorišni deo vrela Grze (slikao D. Milanović) (preuzeto iz Ristić, 2007) 37 pro tic aj Q ...
    ... jih temperatura vazduha, met. st. Ćuprija, za period 1961-2022. godine. 21.5 21.2 16.7 11.4 6.5 ' 1.6 a uuu O 25.0 li « = — a D D m m ı i Zl ll| s r = zz ~ ı — — — i o . — a zz ~ a o o o o o o o O o w r n O o c o o r n č c o w ...

  • Vodosnabdevanje podzemnim vodama

    Zoran Stevanović (2019)
    podzemne vode, vodosnabdevanje

  • Одређивање оптималне производње дубинске пумпе на клипним шипкама

    Лука Перишић (2023)
    У условима смањене цене нафте, ради одржавања конкурентности на тржишту, нафтне компаније су приморане да проналазе све више начина оптимизације производне опреме. Нешто што би у време економског раста и „цветања“ нафтне индустрије био прихватив губитак, сад је прилика за уштеду и стварања предности над конкуренцијом. Инжењери производње су у оваквим околностима приморани да користе новије методе анализа и тражења бушотина кандидата за оптимизацију. Применом итеративних метода мењања параметара рада дубинских пумпи који су већ у производњи може се постићи ...
    дубинска пумпа, клипне шипке, оптимизација, прорачун опреме

  • Threshold-induced correlations in the Random Field Ising Model

    Sanja Janićević, Dragutin Jovković, Lasse Laurson, Đorđe Spasojević (2018)
    Multidisciplinary
    ... λ λ= =ζ ζ+ − + −D T b b V b b D T V D b S b V b b D S V( / ; , ) ( ; , ), ( ; , ) ( ; , ), (13)T x w T S x x w x Sth 1 th 1 th 1 th λ λ=ζ +D T b b V b b D T V( / ; , ) ( ; , ), (14)T x w Tint th 1 int thint int λ λ λ λ = = . ζ ζ + + D T b b V b b D T V D T b b V b b D T V ( / ; , ) ...
    ... the Barkhausen e�ect4–7. In athermal (T = 0) and nonequilibrium case, the model has a disorder induced transition8–10 in dimensions 2 ≤ d < 6, while for dimensions d ≥ 6 it is described in terms of the mean �eld theory11–14. In this model, when the external magnetic �eld slowly changes, the system relaxes ...
    ... and the Barkhausen effect*. In athermal (T= 0) and nonequilibrium case, the model has a disorder induced transition®-!° in dimensions 2 < d < 6, while for dimensions d > 6 it is described in terms of the mean field theory'"“*. In this model, when the external magnetic field slowly changes, the system relaxes ...

  • Clockwise vertical-axis rotation in the West Vardar zone of Serbia: Tectonic implications

    Vesna Lesić, Emo Márton, Violeta Gajić, Dragana Jovanović, Vesna Cvetkov (2018)
    The Vardar-Tethyan mega-suture between the Eurasian and Adria (Gondwana) margins comprises remnants of oceanic lithosphere of Neotethys and distal parts of the adjacent continental margins including unconformable Late Cretaceous sedimentary cover and Cenozoic igneous rocks of post-obduction age. This study provides kinematic constraints for displacements and rotations affecting the Serbian part of the West Vardar and Jadar-Kopaonik units after the closure of the Neotethyan (= Sava) Ocean. The targets of the paleomagnetic research were Late Cretaceous sediments representing an ...
    Paleomagnetism, Clockwise rotation, Dinarides, West Vardar zone
    ... ic d ir ec ti o n s b as ed o n th e re su lt s o f p ri n ci p al co m p o n en t an al y si s (K ir sc h v in k 1 9 8 0 ). K ey : L at . N an d L o n . E : g eo g ra p h ic co o rd in at es (W G S 8 4 ), n /n o : n u m b er o f u se d /c o ll ec te d sa m p le s; D , I (D c , I c ): d ec li ...
    ... sc ep ti b il it y ei th er sc at te re d d ir ec ti o n s o r b ad d em ag n et iz at io n cu rv es . * L ef t o u t fr o m te ct o n ic in te rp re ta ti o n d u e to cl o se n es s to th e d ir ec ti o n o f p re se n t E ar th m ag n et ic fi el d o n th e sa m p li n g ar ea . M ag n et ...
    ... ad in g s fo r th e fi el d o ri en ta ti o n o f th e co re s w er e co rr ec te d u si n g IG R F -1 2 In te rn at io n al G eo m ag n et ic R ef er en ce F ie ld m o d el (T h éb au lt et al . 2 0 1 5 ). T h e ag e d et er m in at io n w as d o n e b y M il en a D u n či ć b as ed o n w ...

  • Determining the Availability of Continuous Systems at Open Pits Applying Fuzzy Logic

    Miljan Gomilanović, Miloš Tanasijević, Saša Stepanović (2022)
    This work presents a model for determining the availability of continuous systems at open pits by applying fuzzy logic and fuzzy inference systems. The applied model was formed by the synthesis of independent partial indicators of availability. The model is based on an expert system for assessing the availability of continuous mining systems. The availability of the system, as a complex state parameter, is decomposed into the partial indicators, reliability, and convenience of maintenance, and the fuzzy compositions, used ...
    системи, континуални систем експоатације, површински коп, рударство, расположивост, фази логика, max–min композиција, min–max композиција

  • Математика 2

    Драган Станков (2020)
    математичка анализа