Претрага
612 items
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Extensive vibrations of the belt conveyer drive electromotor of a bucket wheel excavator as a result of intesified wear-and-tear of its mount support
... Acceleration [m/S1 40 40 -40 0.0 2000 400 600 800 1000 1200 1400 Gp 200 400 &0D 800 1000 1200 490 Gp 2000 400 600 -800 1000 1200 400 Timels} Time [s] Time Bl o Movement [mm} .0 Velocity [mny/s} Acceleration [m/5" « | | || - | j Yli| [10%111}T11f||TRHY}}|f MMA JNJIMINJI| m\h':'\\m |PA| |4|Y}Y}}||}}|| ...
... Milošević Mitić V., Maneski M. Condition and behaviour diagnostics of drive groups on belt conveyors. Journal of Engineering Failure Analysis, Vol. 22, 2012, p. 28-37, https://doi.org/10.1016/j.engfailanal.2012.01.001. |12] Jin X. H., Zhao M. B., Chow T. W. S., Pecht M. Motor bearing fault diagnosis ...
... |4|Y}Y}}||}}|| | IJ|||||}||L|||||j | |B(}/M-6}Y/,}}}}}h | | JMI aa [1 40 .0l O 200 40 600 — 8000 10600 1200 1400 0000 200 400 600 800 1000 1200 1400 ~ "(oD 700 400 600 -800 1000 1700 1400 ime Time sl Time s} 4g Movement [mm} a Velocity ml .0 Aceeleration [m/5 >o| 0 0 00| 00- - 00 0 20 -.0 agl ...Vesna Damnjanović, Predrag Jovančić, Snežana Aleksandrović. "Extensive vibrations of the belt conveyer drive electromotor of a bucket wheel excavator as a result of intesified wear-and-tear of its mount support" in Journal of Vibroengineering (2017). https://doi.org/10.21595/jve.2016.17321
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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 ...... (0 / , 0 / , 0 / , 0.993 / , 0.007 / ); (0 / , 0.930 / , 0.070 / , 0 / , 0 / ); (0 / , 1.000 / , 0 / , 0 / , 0 / ); P TCP M P TCP M P TCP M P TCP M A B C D E A B C D E A B C D E A B C D E = = = = According to the same principle, the remaining membership functions ...
... and the final numerical form of the membership function. Table 1. Input data, and membership functions for the model. M o de l L ab el M in . M ax . U n it M ac h in e V al u e Membership functions μA μB μC μD μE T C P P1 68.5 200 kW M1 110 0.256 0.744 M2 125 0.715 ...
... + + = For the remaining machines and models, Table 2 are given only the final results. Table 2. Results of the first level Fuzzy model. M o d el M ac h in e Output values (8) (9) A B C D E Zn T C P M1 0.1128 0.1128 0.5488 0.1128 0.1128 3.000 M2 0.1577 0.2189 0.3080 0.1577 0.1577 ...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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Investigation of quantitative indicators of anisotropy based on longitudinal elastic waves propagation velocities with uncertainty
Miloš Gligorić, Jelena Majstorović, Suzana Lutovac. "Investigation of quantitative indicators of anisotropy based on longitudinal elastic waves propagation velocities with uncertainty" in Underground Mining Engineering, Belgrade : University of Belgrade - Faculty of Mining and Geology (2018). https://doi.org/10.5937/PodRad1832001G
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GNSS Time Series as a Tool for Seismic Activity Analysis Related to Infrastructure Utilities
... obvious microseismicity (a high number of small earthquakes), sparse medium-sized earthquakes (magnitude M 5.5–5.9), strong earthquakes (magnitude M 6.0–6.4) and rare large earthquakes (magnitude M ≥ 6.5). The 2019 Durres, Albania Earthquake involved a series of inland earthquakes begin- ning on April ...
... Nikolaidis, M.: Observation of geodetic and seismic deformation with the Global Positioning System (Ph.D. Thesis), University of California, San Diego, San Diego. (2002) 5. Bevis, M., Bedford, J., Caccamise, II D.J. The Art and Science of Trajectory Modelling. In: Montillet JP., Bos M. (eds) Geodetic ...
... Astrophysical Journal. Vol. 343, pp. 874–887. (1989) 7. Schultz, M. Stattegger, K. Spectrum: spectral analysis of unevenly spaced paleoclimatic time series. Computer & Geosciences. Vol. 23 (9), pp. 929–945. (1997) 8. Goudarzi, M. A., Cocard, M., Santerre, R. Noise behavior in CGPS position time series: ...Sanja Tucikešić, Ankica Milinković, Branko Božić, Ivana Vasiljević, Mladen Slijepčević . "GNSS Time Series as a Tool for Seismic Activity Analysis Related to Infrastructure Utilities" in Contributions to International Conferences on Engineering Surveying. Springer Proceedings in Earth and Environmental Sciences, Dubrovnik, Croatia, October 22-23, 2020, Springer, Cham (2021). https://doi.org/10.1007/978-3-030-51953-7_21
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The recent fault kinematics in the westernmost part of the Getic nappe system (Eastern Serbia): Evidence from fault slip and focal mechanism data
Mladenović Ana, Trivić Branislav, Antić M., Cvetković Vladica, Pavlović Radmila, Radovanović S., Fügenschuh Bernhard (2014)Mladenović Ana, Trivić Branislav, Antić M., Cvetković Vladica, Pavlović Radmila, Radovanović S., Fügenschuh Bernhard. "The recent fault kinematics in the westernmost part of the Getic nappe system (Eastern Serbia): Evidence from fault slip and focal mechanism data" in Geologica Carpathica 65 no. 2, Bratislava, Slovak Republic:Veda, Publishing House of the Slovak Academy of Sciences (2014): 147-161. https://doi.org/10.2478/geoca-2014-0010
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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 ...Igor Peshevski, Milorad Jovanovski, Biljana Abolmasov, Jovan Papic, Uroš Đurić, Miloš Marjanović, Ubydul Haque, Natasha Nedelkovska. "Preliminary regional landslide susceptibility assessment using limited data" in Geologica Croatica , Croatian Geological Society (2019). https://doi.org/10.4154/gc.2019.03
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Sedimentologija gornje krede centralnog dela vardarske zone
Violeta M. Gajić (2014-09-04)Područje istraţivanja obuhvaćeno doktorskom disertacijom nalazi se ucentralnim delovima Vardarske zone. Karakteriše se sloţenom geološkomgrađom koju grade mezozojske tvorevine trijaske, jurske i kredne starosti, kao ikvartarni sedimenti. U trijasu je istraţivano područje pokrivalo more, sve dogranice sa Šumadijom. Tokom jure sloţenim geotektonskim procesima stvarajuse ofiolitske stene rasprostranjene u juţnim i delom u centralnim delovimaistraţivanog područja. U donjoj kredi se pokretima dinarske faze izdiglo kopno,koje je egzistiralo skoro u celoj donjoj kredi područja istraţivanja.U alb-cenomanu pojedini delovi istraţivanog područja se ...Violeta M. Gajić. Sedimentologija gornje krede centralnog dela vardarske zone, Универзитет у Београду, Рударско-геолошки факултет, 2014-09-04
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Studying of Liquid Thermolysis Products of Various Types of Immature Kerogen in Sedimentary Lacustrine Rocks from the Valjevo-Mionica Basin, Serbia, and the Effect of Pt4+ and Ru3+ Ions on Their Yield and the Hydrocarbon Composition
Šajnović Aleksandra, Stojanović Ksenija, Simić Vladimir, Pevneva Galina S., Golovko Anatoly K., Jovančićević Branimir (2011)Šajnović Aleksandra, Stojanović Ksenija, Simić Vladimir, Pevneva Galina S., Golovko Anatoly K., Jovančićević Branimir. "Studying of Liquid Thermolysis Products of Various Types of Immature Kerogen in Sedimentary Lacustrine Rocks from the Valjevo-Mionica Basin, Serbia, and the Effect of Pt4+ and Ru3+ Ions on Their Yield and the Hydrocarbon Composition" in Geochemistry International 10 no. 49, Moscow, Russian Federation:Springer, M A I K Nauka - Interperiodica (2011): 1022-1034. https://doi.org/10.1134/S0016702911100053
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Tectonic evolution of the Vršac Mts. (NE Serbia): Inferences from field kinematic and microstructural investigations
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 deformacijaUroš Stojadinović, Nemanja Krstekanić, Bojan Kostić, Marija Ružić, Aleksa Luković . "Tectonic evolution of the Vršac Mts. (NE Serbia): Inferences from field kinematic and microstructural investigations" in Geologica Carpathica, Central Library of the Slovak Academy of Sciences (2021). https://doi.org/https://doi.org/10.31577/GeolCarp.72.5.3
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Mineralogical Discrimination between Authentic and Recent Imitations of Pottery Manufacture in Zlakusa, Serbia
Maja Milošević, Mihovil Logar, Biljana Đorđević. "Mineralogical Discrimination between Authentic and Recent Imitations of Pottery Manufacture in Zlakusa, Serbia" in Nordic Clay Meeting/3rd Symposium Clays & Ceramics 2021, The Latvian Clay Science Society (2021)
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Prioritization of strategic measures for strengthening the security of supply of the Serbian natural gas sector
To strengthen the security of supply of the Serbian gas sector, it is necessary to analyze the impact of planned strategic measures. The analysis involves the identification of the most influential threats to the security of natural gas supply and prioritization of the strategic measures for overcoming the consequences of threats. The proposed methodology is based on Fuzzy Analytic Hierarchy Process. The obtained weights for the identified threats and strategic measures are formed according to experts' judgments. The results ...Sigurnost snabdevanja, Donošenje odluka, Snabdevanje prirodnim gasom, Fazi AHP, Energetski indikatori... each analyzed threat/strategic measure: ∑ m j=1 M j gi = ( ∑ m j=1 l j gi, ∑ m j=1 m j gi, ∑ m j=1 u j gi ) , i= 1, 2, ..., n (4) Second, it is necessary to find (−1) power of summation ∑ n i=1 ∑ m j=1 Mj gi: [ ∑ n i=1 ∑ m j=1 M j gi ]−1 = ( 1 Σn j=1ui , 1 Σn j=1mi ...
... judgment. The TFN is defined as fuzzy number M (l, m, u) on R (set of real numbers) if its membership function μM(x): R→ [0,1] is equal to (Chang, 1996): μМ(X) ⎧ ⎪ ⎪ ⎪ ⎪ ⎪ ⎨ ⎪ ⎪ ⎪ ⎪ ⎪ ⎩ x m − l − l m − l , x ε[l,m], x m − u − u m − u , x ε[m, u], 0, otherwise, (2) There are several ...
... Let Mj gi(j = 1,2, …,m) be TFNs that represent the value of threat/ strategic measure in comparison matrix (Obtained as the GM in Equa- tion (1)). Then the value of fuzzy synthetic extent (Si) is defined as (Chang, 1996): Si = ∑ m j=1 M j gi [ ∑ n i=1 ∑ m j=1 M j gi ]−1 (3) The ...Boban Pavlović, Dejan Ivezić, Marija Živković. "Prioritization of strategic measures for strengthening the security of supply of the Serbian natural gas sector" in Energy Policy, Elsevier BV (2020). https://doi.org/10.1016/j.enpol.2020.111936
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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)... biomarkers were m/z 133 for isorenieratane, m/z 181 and m/z 195 for methyl- and dimethyl-carbazoles, along with m/z 121, m/z 135, and m/z 149 for δ-, β- and γ-, and α-alkyl isomers of chromans, re- spectively. 4. Results 4.1. Lithology and mineralogy The studied profile of the Čučale (460 m thick) and ...
... s. The mass fragmentograms of saturated fraction used for the interpretation of biomarkers were m/z 71 for n-alkanes and isoprenoids, m/z 217 for steroids, m/z 123 and m/z 191 for terpenoids, m/z 98 and m/z 111 for isoprenoid thiophenes, except for β-carotane, which was integrated from Total Ion Currents ...
... n-alkane homologs occurs, resulting in a predominance of Fig. 12. Fragmentograms of isorenieratane (m/z 133), alkyl isomers of chro- mans (m/z 121, m/z 135, and m/z 149), and dimethyl carbazoles (m/z 195) of representative sample BL7/27. N. Burazer, et al. Marine and Petroleum Geology 115 (2020) 104252 ...Nikola Burazer, Aleksandra Šajnović, Nebojša Vasić, Milica Kašanin-Grubin, Dragana Životić, João Graciano Mendonça Filho, Predrag Vulić, Branimir Jovančićević. "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" in Marine and Petroleum Geology, Elsevier BV (2020). https://doi.org/10.1016/j.marpetgeo.2020.104252
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Neogena i kvartarna herpetofauna (Anura i Squamata) Srbije : doktorska disertacija
Dragana D. Đurić (2019)U radu je prvi put opisan deo herpetofaune (Anura i Squamata) iz neogenih i kvartarnih lokaliteta Srbije. Obrađeni su lokaliteti Sibnica, Prebreza, Lazarevc, Vračević i Riđake, neogene starosti. Lokaliteti kvartarne starosti su pećine Mala i Velika Balanica, Pešturina, Hadži Prodanova, Baranica, Vrelska pećina i sedimentne ispune fisura u kamenolomima Venčac i Beočin. U radu je prikazana je taksonomska analiza herpetoloških ostataka. Pored taksonomske analize fosilnog materijala dat je kratak geografsko-geološki opis proučavanih lokaliteta, osnovne osteološke karakteristike anura i skvamata ...Dragana D. Đurić. Neogena i kvartarna herpetofauna (Anura i Squamata) Srbije : doktorska disertacija, Beograd : Rudarsko-geološki fakultet, 2019
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2D geoelectrical resistivity tomography application at the former city waste dump "Ada Huja": Eco-geological problem
Branislav Sretenović, Filip Arnaut, Ivana Vasiljević, Vesna Cvetkov. "2D geoelectrical resistivity tomography application at the former city waste dump "Ada Huja": Eco-geological problem" in Podzemni radovi, Centre for Evaluation in Education and Science (CEON/CEES) (2019). https://doi.org/10.5937/PodRad1934059S
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Polyhedral characteristics of the cosalite-type crystal structures
Sabina Kovač, Predrag Dabić, Aleksandar Kremenović, Aleksandar Pačevski, Ljiljana Karanović, Marko V. Rodić, Martina Tribus (2019)... T A B L E 7 . C O M P A R IS O N O F U N IT -C E L L P A R A M E T E R S A N D C H E M IC A L C O M P O S IT IO N B A S E D O N 2 0 S a p fu F O R C O S A L IT E S A N D IS O S T R U C T U R A L C O M P O U N D S S a m p le L o c a lit y R e f C h e m ic a l c o m p o s it io n c a lc ...
... shown in T A B L E 5 . B O N D -V A L E N C E S A N D B O N D V A L E N C E S U M S R m ij (v u ) F O R C O S A L IT E F R O M T R E P Č A S it e B i1 B i2 B i4 M e 1 M e 2 M e 3 P b 3 P b 4 C u 1 C u 2 R m ij S 1 — 0 .8 9 — — 0 .4 2 7 3 2 — 0 .1 9 8 3 2 — 0 .2 3 7 3 2 — 2 .1 4 (7 ...
... cosalite studied from his own mineral T A B L E 8 . V A R IA T IO N O F M E A N P O L Y H E D R A L M e – S D IS T A N C E S (Å ) A S A F U N C T IO N O F P O L Y H E D R A L D IS T O R T IO N D (% ) B i1 B i2 B i4 M e 2 M e 3 M e 1 P b 3 P b 4 D , R . D , R . D , R . D , R . D , R . D ...Sabina Kovač, Predrag Dabić, Aleksandar Kremenović, Aleksandar Pačevski, Ljiljana Karanović, Marko V. Rodić, Martina Tribus. "Polyhedral characteristics of the cosalite-type crystal structures" in The Canadian Mineralogist, Mineralogical Association of Canada (2019). https://doi.org/10.3749/canmin.1900017
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Strain partitioning in a large intracontinental strike-slip system accommodating backarc-convex orocline formation: The Circum-Moesian Fault System of the Carpatho-Balkanides
Nemanja Krstekanić, Liviu Matenco, Uroš Stojadinović, Ernst Willingshofer, Marinko Toljić, Daan Tamminga (2022)oroklini, raspodela deformacija, transkurentna kretanja, Karpato-balkanidi, Cirkum-mezijski rasedni sistemNemanja Krstekanić, Liviu Matenco, Uroš Stojadinović, Ernst Willingshofer, Marinko Toljić, Daan Tamminga. "Strain partitioning in a large intracontinental strike-slip system accommodating backarc-convex orocline formation: The Circum-Moesian Fault System of the Carpatho-Balkanides" in Global and Planetary Change, Elsevier BV (2022). https://doi.org/10.1016/j.gloplacha.2021.103714
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Prostorni položaj ofiolita istočne Vardarske zone: geofizičko-geološki model i njegove geodinamičke implikacije
Dragana D. Petrović (2015-12-29)Centralni deo Balkanskog poluostrva je geotektonski veoma složen. Tetis je zatvorentokom gornjeg mezozoika, a ofioliti na zapadu i ofioliti Vardarske zone predstavljajuostatke nekadašnjih okeanskih prostora. Najistočniji deo Vardarske zone razlikuje se odsvih ostalih ofiolita na Balkanskom poluostrvu i karakteriše se najizraženijim suprasubdukcijskimafinitetom. Istočna vardarska zona locirana je u centralom delu Srbije.Na severu se prostire do Apusena u Rumuniji, a na jugu obuhvata cetralni deoMakedonije i Peonias zonu u severnoj Grčkoj. Istočna vardarska zona se nalazi istočnood geotektonske jedinice Kopaonik ...Dragana D. Petrović. "Prostorni položaj ofiolita istočne Vardarske zone: geofizičko-geološki model i njegove geodinamičke implikacije" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-12-29)
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From post-disaster landslides inventory to open landslides data
... Đurić D., Mladenović A., Pešić-Georgiadis M., Marjanović M., Abolmasov B. 2017. Using multiresolution and multitemporal satellite data for post disaster landslide inventory in the Republic of Serbia. Landslides 14 (4): 1467-1482. Marjanović M., Krautblatter M., Abolmasov B., Đurić U., Sandić C., Nikolić ...
... rs/beware/. REFERENCES Abolmasov B., Damjanović D., Marjanović M., Stanković R., Nikolić V., Nedeljković S., Petrović Ž. 2017. Project BEWARE - Landslides Post-disaster Relief Activities for Local Communities in Serbia. In: M. Mikoš et al. (eds.), Advancing Culture of Living with Landslides ...Biljana Abolmasov, Miloš Marjanović, Uroš Đurić, Jelka Krušić. "From post-disaster landslides inventory to open landslides data" in Proceedings of 3rd European Regional Conference of IAEG/ Athens/ Greece/ 6-10 October 2021, International Association for Engineering Geology and the Environment (2021)
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Минерагенија зеолитских туфова Србије
Vladan Kašić (2018-02-05)Лежишта наших зеолитских туфова (Златокоп, Игрош, Јабланица 1, Беочин, Топоница и Сланци) која су овде била предмет детаљних истраживања, просторно и генетски везана су за вулканске и вулканокластичне стене маринских средина сенонске и неогенске старости и језерске седименте неогене старости и настала су као продукт девитрификације вулканског стакла.Током лабораторијских испитивања при изради ове докторске дисертације, примењене су следеће аналитичке методе: оптичка испитивања петрографских препарата; рендгенска дифракција праха (XRD); скенирајућа електронска микроскопија (СЕМ метода); хемијска карактеризација зеолитских туфова у оквиру ...Vladan Kašić. "Минерагенија зеолитских туфова Србије" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2018-02-05)
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Extreme Rainfall Event and Its Aftermath Analysis—IPL 210 Project Progress Report
Biljana Abolmasov, Mileva Samardžić Petrović, Ranka Stanković, Miloš Marjanović, Jelka Krušić, Uroš Đurić (2021)... 1 4 -0 5 -1 5 2 0 1 4 -0 5 -1 8 2 0 1 4 -0 5 -2 1 2 0 1 4 -0 5 -2 4 2 0 1 4 -0 5 -2 7 2 0 1 4 -0 5 -3 0 R R c u m [ m m ] R R [ m m ] Valjevo Kragujevac Kraljevo Loznica Kragujevac cum Kraljevo cum Loznica cum Valjevo cum Fig. 2 Cumulative and daily precipitation ...
... three years. B. Abolmasov (&) � R. Stanković � M. Marjanović � J. Krušić Faculty of Mining and Geology, University of Belgrade, Đušina 7, 11000 Belgrade, Serbia e-mail: biljana.abolmasov@rgf.bg.ac.rs R. Stanković e-mail: ranka.stankovic@rgf.bg.ac.rs M. Marjanović e-mail: milos.marjanovic@rgf.bg ...
... Mining and Geology. References Abolmasov B, Damjanović D, Marjanović M, Stanković R, Nikolić V, Nedeljković S, Petrović Ž (2017a) Project BEWARE—landslide post-disaster relief activities for local communities in Serbia. In: Mikoš M et al (eds), Advancing culture of living with landslides, Proceedings ...Biljana Abolmasov, Mileva Samardžić Petrović, Ranka Stanković, Miloš Marjanović, Jelka Krušić, Uroš Đurić. "Extreme Rainfall Event and Its Aftermath Analysis—IPL 210 Project Progress Report" in Understanding and Reducing Landslide Disaster Risk, Springer International Publishing (2021). https://doi.org/10.1007%2F978-3-030-60196-6_19