Претрага
993 items
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XRD dertermination od hydrothermal phases related to epithermal mineralization in the Čukaru Peki deposit
Dragana Bosić, Vladica Cvetković, Miodrag Banješević, Kristina Šarić. "XRD dertermination od hydrothermal phases related to epithermal mineralization in the Čukaru Peki deposit" in V Congress of Geologists of Republic of Macedonia ": “Geology in a changing world”, Makedonsko geološko društvo (2024)
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Gate Road Support Deformation Forecasting Based on Multivariate Singular Spectrum Analysis and Fuzzy Time Series
Luka Crnogorac, Rade Tokalić, Zoran Gligorić, Aleksandar Milutinović, Suzana Lutovac, Aleksandar Ganić (2021)Underground mining engineers and planners in our country are faced with extremely difficult working conditions and a continuous shortage of money. Production disruptions are frequent and can sometimes last more than a week. During this time, gate road support is additionally exposed to rock stress and the result is its progressive deformation and the loss of functionality of gate roads. In such an environment, it is necessary to develop a low-cost methodology to maintain a gate road support system. ...deformacije podgrade, lasersko skeniranje, višekanalna singularna spektralna analiza, prognoza, klasterisanje fuzzy vremenskih serija... of the universe of displacement as l =min∆VM×N and u =max∆VM×N , respectively. The observed data are sorted in ascending order. The distance of any two consecutive values of displacement is calculated as follows: d = |∆vi+1 − ∆vi|, i = 1, 2, . . . , (M× N)− 1, (16) Now it is necessary to compute the ...
... → v (t− 1) + → u (t), t = 1, 2, . . . , N , (1) where → v (t)—the position vector of the marker m in the current support configuration. → v (t− 1)—the position vector of the marker m in the previous support configuration. → u (t)—the vector of displacement. N—time of monitoring. Figure 2. Change of ...
... 2]. In conventional matrix form, the data of position of all markers obtained by scanning for 1 ≤ t ≤ N can be expressed by the time-dependent position vectors as follows: → V(t) = [→ v ij ] M×N = → v 11 → v 12 → v 13 · · · → v 1N → v 21 → v 22 → v 23 · · · → v 2N ... ... ... . . ...Luka Crnogorac, Rade Tokalić, Zoran Gligorić, Aleksandar Milutinović, Suzana Lutovac, Aleksandar Ganić. "Gate Road Support Deformation Forecasting Based on Multivariate Singular Spectrum Analysis and Fuzzy Time Series" in Energies, MDPI (2021). https://doi.org/https://doi.org/10.3390/en14123710
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Surface modification of sol-gel synthesized TiO2 nanoparticles induced by La-doping
Grujić-Brojcin Mira, Armaković Stevan, Tomić N., Abramović Biljana, Golubović Aleksandar, Stojadinović Bojan, Kremenović Aleksandar, Babić Biljana, Dohcević-Mitrović Zorana, Šćepanović Maja (2014)Grujić-Brojcin Mira, Armaković Stevan, Tomić N., Abramović Biljana, Golubović Aleksandar, Stojadinović Bojan, Kremenović Aleksandar, Babić Biljana, Dohcević-Mitrović Zorana, Šćepanović Maja. "Surface modification of sol-gel synthesized TiO2 nanoparticles induced by La-doping" in Materials Characterization no. 88, NEW YORK, NY 10010-1710 USA:Elesevier Science Inc (2014): 30-41. https://doi.org/10.1016/j.matchar.2013.12.002
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Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)
Saša Ivanišević, Dejan Radivojević (2018)Exploration for oil and gas in mature areas, such as the Pannonian Basin, can benefit from reexamination of old data using more advanced modern workflows that focus on the temporal and spatial aspects of sediment deposition. Specifically, we apply a new environment of deposition model that interprets the Upper Miocene- Pliocene sediments as being deposited in a rapidly filling basin characterized by quick shelf edge progradation from the northwest toward the southeast. Reconstruction of this shelf edge trajectory reveals ...Saša Ivanišević, Dejan Radivojević. "Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)" in Interpretation, AAPG SEG (2018). https://doi.org/10.1190/INT-2017-0084.1
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Kristalografsko ispitivanje nefelinskih i karnegitskih faza dobijenih postupkom termalne transformacije sintetičkih zeolita
Predrag J. Vulić (2005)Predrag J. Vulić. Kristalografsko ispitivanje nefelinskih i karnegitskih faza dobijenih postupkom termalne transformacije sintetičkih zeolita, Beograd:Rudarsko-geološki fakultet, 2005
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Евалуација утицаја успора ХЕ "Ђердап 1" на формирање режима подземних вода у приобаљу Дунава
Predrag R. PAJIĆ (2016)Predrag R. PAJIĆ. Евалуација утицаја успора ХЕ "Ђердап 1" на формирање режима подземних вода у приобаљу Дунава, Beograd:Rudarsko Geološki Fakultet, 2016
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Sinteza i strukturna karakterizacija novih cezijumskih i kalijumskih silikata sa elementima retkih zemalja
Predrag Z. Dabić (2022)Predmet i ciljevi naučnog istraživanja ove doktorske disertacije su sinteza i strukturna karakterizacija novih cezijumskih i kalijumskih silikata sa elementima retkih zemalja. Istraživanja su izvedena u okviru sistema SiO2–REE2O3–XF, gde REE predstavlja trovalentni katjon elementa retkih zemalja (Sc, Y, Sm, Eu, Gd, Ho, Er, Tm, Yb, Lu), dok X predstavlja jednovalentni katjon alkalnih metala (K, Cs). Rad na disertaciji bio je fokusiran na sintezu monokristala, određivanje kristalnih struktura, kao i na kristalografsko i kristalohemijsko ispitivanje sintetisanih monokristala. Monokristali su sintetisani ...alkalni silikati elemenata retkih zemalja, kristalna struktura, sinteza metodom fluksa, rendgenska difrakcija na monokristalu, elementi retkih zemaljaPredrag Z. Dabić. Sinteza i strukturna karakterizacija novih cezijumskih i kalijumskih silikata sa elementima retkih zemalja, Beograd : P. Dabić, 2022
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Terminology Acquisition and Description Using Lexical Resources and Local Grammars
Acquisition of new terminology from specific domains and its adequate description within terminological dictionaries is a complex task, especially for languages that are morphologically complex such as Serbian. In this paper we present an approach to solving this task semi-automatically on basis of lexical resources and local grammars developed for Serbian. Special attention is given to automatic inflectional class prediction for simple adjectives and nouns and the use of syntactic graphs for extraction of Multi-Word Unit (MWU) candidates for ...... 96 varalica alica N 5 f + N1651 27 1 4 Lalica ica N 3 m + N1683 145 142 98 Milojica ica N 3 m + N1741 145 3 2 Prica ica N 3 m/f + N683 40 33 83 tvrdica ica N 3 m/f + N679 40 7 18 ubica Table 1: Excerption from dataset with ending. (m: masculine gender; f: feminine gender; m/f: nouns change ...
... 39 41 43 45 47 49 V N A Proceedings of the conference Terminology and Artificial Intelligence 2015 (Granada, Spain) 83 ending POS length gender anim FST Total Frequency Rel. freq. Example alica N 5 f - N650 97 95 98 sijalica alica N 5 f - N1650 97 1 1 Skalica alica N 5 f + N651 27 26 96 ...
... 1993; Gelbukh et al., 2010). For grammatical correctness best precision at rank n (P@n) measure is very high (figure 6) and independent of the ranking (the trend is flat). Figure 6: Precision at rank n for all evaluated term candidates for grammatical correctness. In order to calculate ...Cvetana Krstev, Ranka Stanković, Ivan Obradović, Biljana Lazić. "Terminology Acquisition and Description Using Lexical Resources and Local Grammars" in Proceedings of the 11th Conference on Terminology and Artificial Intelligence, Granada, Spain, 2015, Granada : LexiCon (Universidad de Granada) (2015)
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Age of the Jurassic hemipelagic sediments from the Ljubiš area (Zlatibor Mt., SW Serbia)
Nikita Bragin, Nevenka Đerić (2020)... ca element (Dinarides).– Acta Geol. Hung., 34, 15–44. DJERIĆ, N., GERZINA, N. & SCHMID, M.S. (2007): Age of the Jurassic radiolarian chert formation from the Zlatar Mountain (SW Serbia).– Ofioliti, 32/2, 101–108. DJERIĆ, N., GERZINA, N. & SCHMID, M.S. (2012): Middle Jurassic radiolarian as semblages ...
... & GERZINA SPAJIĆ, N. (2019a): Late Triassic radiolarians from the Grivska Formation.– Geološki anali Balkanskoga poluostrva, 80/1, 17–27. BRAGIN, N.Y., BRAGINA, L.G., GERZINA SPAJIĆ, N., DJERIĆ, N. & SCHMID, S. (2019b): New radiolarian data from the Jurassic ophiolitic mélange of Avala Moun tain ...
... Djokov Potok creek to the west and uphill. The coordinates of the starting point of the section are N 43˚ 37’ 14.0” E 19˚ 50’ 56.1”. We studied and sampled the lower part of this section up to the point N 43˚ 37’ 16.0” E 19˚ 50’ 54.5”. The underlying formation is not visible at the surface. A geological ...Nikita Bragin, Nevenka Đerić. "Age of the Jurassic hemipelagic sediments from the Ljubiš area (Zlatibor Mt., SW Serbia)" in Geologia Croatica, Croatian Geological Survey (2020). https://doi.org/10.4154/gc.2020.11
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A transient three-dimensional numerical model of water impermeable screen effects on the groundwater inflow reduction into the mine (Case Study: Open pit mine Drmno, Serbia)
Šubaranović Tomislav, Polomčić Dušan, Pavlović Vladimir, Pakić N. "A transient three-dimensional numerical model of water impermeable screen effects on the groundwater inflow reduction into the mine (Case Study: Open pit mine Drmno, Serbia)" in Proceedings on CD-ROM [Elektronski izvor]. Vol. 1-2 / 11th International Conference Research and Development in Mechanical Industry - RaDMI 2011, 15-18. September 2011, Sokobanja, Serbia, Vrnjačka Banja:Scientific and Technical Center for Intellectual Property (2011): 1257-1265
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Interactions of Copper(II) Complexes of some Schiff base ligands with calf thymus DNA and bovine serum albumin
Joni prelaznih metala u kombinaciji sa različitim ligandima nude veliki broj mogućnosti za ispitivanje potencijalnih bioaktivnosti. Među jonima prelaznih metala, bakar je poznat kao endogeni metal za ljude, sa karakterističnim biološkim redoks aktivnostima i relativno jakim afinitetom za nukleobaze. Kompleksi bakra ispoljavaju svoju antitumornu aktivnost na nekoliko različitih načina, generišu veliku količinu ROS, što uzrokuje oksidativno oštećenje mitohondrija i biomakromolekula. Nađeno je da kompleksi bakra(II) imaju umeren do dobar afinitet vezivanja sa DNK, uglavnom putem interkalacije.Angelina Petrović, Aleksandar Mijatović, Rada Baošić, Jovana Bogojeski. "Interactions of Copper(II) Complexes of some Schiff base ligands with calf thymus DNA and bovine serum albumin" in 6. Konferencija mladih hemičara Srbije, Srpsko hemijsko društvo (2018)
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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 indikatoriBoban 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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Design of a sucker rod pumping system
Ana Ponoćko (2024)For a long time in the history of oil production, sucker rod pumps have been the first and in many cases the only choice when it comes to mechanical extraction methods. Proper selection of each individual element of the system enables optimization, which entails benefits in the form of increased efficiency and reduced costs. The first part of the paper presents the underground and surface equipment of the rod pump and describes the operation of the entire system. The ...... ——— FiuidLoad (Fo) 3297.05 N Rod Number Weight OfRods In Fluid (Wrf) 16844.8 — |N Rod Grade TotalLoad (Wrf +Fo) 20141.9 — |N ER u 00 WTW\SGSB.BS |Nm Rod 7 (0.875 inch) Fo/s«ooasm Rod 6 (0.75 inch) 1 /Kr 0.0017572 (n)b) CounterWeight Required (CBE), 19603 |N W CounterWeight Positon,0.63444 ...
... G — !MA ? 4 inQ: Crank rotation with well to right: CCW koad : 1,444 1,337 Max. cb moment (N-m): 744155 | 8533,54 Max. cb moment (N-m): Unknown Counterbalance effect(N}: 16935 19411 Structural unbalance (N): 63 Daih electr.use (Kwh/Day): 22 23 Crank offset angle (degrees): 00 Monthly electric bill: ...
... PROSPER AND QROD Table 6.2. Output Well XX-1 Method Results RODSTAR PROSPER QROD m3/D 103 110 10.51 Peak pol.rod load (N} N 24158 25574 21211 _ Min.pol. rod load (N} N 13944 11260.3 16230 Nm 2797 5658 200 In this paper, we presented three main software programs for designing sucker rod ...Ana Ponoćko. Design of a sucker rod pumping system, 2024
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WS4LR - a Worksation for Lexical Resources
... sor.N2:ms1v), NC_AXN+N+Comp//full-time professor DELACF redovna profesora,redovni profesor .NC_AXN+N+Comp:mw2v redovne profesore,redovni profesor .NC_AXN+N+Comp:mp4v redovni profesor,redovni profesor .NC_AXN+N+Comp:ms1v redovnih profesora,redovni profesor .NC_AXN+N+Comp:mp2v B. Wordnet ...
... slatki i socyni sa karakteristicynim tvrdim zrncima.n ENG20-11902961-n hypernym ENG20-11902605-n holo_member ENG20-07295527-n C. Format ...holo_part
...ENG20-11902751-n n pear 2 pear tree 1 Pyrus communis 1 ENG20-11902961-n hyp ... Cvetana Krstev, Ranka Stanković, Duško Vitas, Ivan Obradović. "WS4LR - a Worksation for Lexical Resources" in Proceedings of the Fifth Interantional Conference on Language Resources and Evaluation, Genoa, Italy, May 2006, ELRA - European Language Resources Association (2006)
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Optimizacija parametara reza rotornog bagera pri otkopavanju materijala sa povećanom čvrstoćom
Saša D. Bošković (2016-09-09)Otkopavanje materijala rotornim bagerom je veoma sloţen fiziĉko-mehaniĉki proces. Pokazatelji efektivnosti tog procesa zavise od velikog broja raznovrsnih ĉinilaca od kojih se posebno mogu istaći: fiziĉko-mehaniĉke karakteristike materijala koji se otkopava, reţim rada bagera i izbor tehnoloških parametara bloka, odreska i reza, geometrije vedrica i zuba itd. Poseban problem se javlja kod otkopavanja materijala povećane ĉvrstoće, što je ĉest sluĉaj na našim površinskim kopovima. Dimenzionisanje specifiĉne sile kopanja bagera prema manjim masama izuzetno ĉvrstog materijala je neracionalno i rešenje ...rotorni bager, parametri reza, otpor na kopanje, dinamika bagera, kapacitet, optimizacija, specifična potrošnja energije... naĉin: N i N i b N i p n j pr n j rb ttttT iijij 1 1 111 (3.99) gde su:N - broj pojaseva na visini bloka, N = H/(0,5 0,7)D, n - broj rezova na duţini bloka, n = Lb/d, i - broj pojasa, j ...
... Lapor kreĉnjaĉki 8N 22 60 - 180 22 - 38 3. Lapor 7 N 18 - 20 95 - 120 19 - 22 4. Glina-ugljevita i sivozelena 6 N 18 5 6 5. Sivozelena glina i glinoviti lapor 6 N 18 20 12 6. Ugalj, laporovit 6 N 14 50 22 - 54 7. Lapor glinovit 5 N 19 87 13,5 8. Odloţeni materijal 17,77 31,64 15,52 ...
... matrica spoljašnjih (dodatnih) koncentrisanih masa, m N N dVrs e r T s V e ( ) - matrica masa konaĉnog elementa, - gustina, odnosno masa jedinice zapremine konaĉnog elementa, B b N N dVrs e e m r T s V e e m 1 1 ( ) - globalno prigušenje, ...Saša D. Bošković. "Optimizacija parametara reza rotornog bagera pri otkopavanju materijala sa povećanom čvrstoćom" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-09-09)
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Evolution of the Alpine Tethys (Sava) suture zone in Fruška Gora Mountains (N Serbia): from orogenic building to tectonic omissions
Toljić Marinko, Matenco Liviu, Đerić Nevenka, Milivojević Jelena, Gerzina Nataša, Stojadinović Uroš (2010)Toljić Marinko, Matenco Liviu, Đerić Nevenka, Milivojević Jelena, Gerzina Nataša, Stojadinović Uroš. "Evolution of the Alpine Tethys (Sava) suture zone in Fruška Gora Mountains (N Serbia): from orogenic building to tectonic omissions" in Geophysical Research Abstracts, 7th EGU General Assembly, 02-07 May 2010, Vienna, Austria 12, Vienna:Copernicus on behalf of the European Geophysical Society (2010)
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Hydrogeothermal potentials of Rogozna mountain and possibility of their valorization
D. R. Ivanović, Dj. A Valjarević, R. D. Srećković-Batoćanin, N. M. Martić-Bursać, D. Ž. Vukoičić, R. M. Ivanović (2020)D. R. Ivanović, Dj. A Valjarević, R. D. Srećković-Batoćanin, N. M. Martić-Bursać, D. Ž. Vukoičić, R. M. Ivanović. "Hydrogeothermal potentials of Rogozna mountain and possibility of their valorization" in Open Geosciences, Walter de Gruyter GmbH (2020). https://doi.org/10.1515/geo-2019-0083
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Improvement of education through the cooperation between CEEPUS EURO Geo-Sci network and scientific projects: examples from UB-FMG
Kristina Šarić, Dejan Prelević, Miloš Marjanović, Uroš Stojadinović, Vladimir Simić . "Improvement of education through the cooperation between CEEPUS EURO Geo-Sci network and scientific projects: examples from UB-FMG" in V Congress of Geologists of Republic of Macedonia ": “Geology in a changing world”, Makedonsko geološko društvo (2024)
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Understanding partitioning of deformation in highly arcuate orogenic systems: Inferences from the evolution of the Serbian Carpathians
Nemanja Krstekanić, Liviu Matenco, Marinko Toljić, Oleg Mandić, Uroš Stojadinović, Ernst Willingshofer (2020)... dominantly dextral, with NNE-SSW to N-S oriented faults in the northern and central parts (Figs. 8, 9a,b) and further to NNW-SSE to NW-SE more southwards in the studied area (Figs. 8, 9c). Conjugate sinistral faults are commonly observed, varying in orientation from NE-SW to N-S oriented faults (Figs. 8, ...
... the photos are plotted in stereoplots. a) Dextral, N-S oriented strike-slip fault (green arrow) truncating older thrusting related foliation in weakly metamorphosed Upper Jurassic limestones of the Upper Getic sub-unit. Studied site Tu1. b) Dextral, N-S oriented strike-slip fault offsetting tilted Lower ...
... Andrić, N., Sant, K., Matenco, L., Mandic, O., Tomljenović, B., Pavelić, B., Hrvatović, H., Demir, V., Ooms, J., 2017. The link between tectonics and sedimentation in asymmetric extensional basins: inferences from the study of the Sarajevo–Zenica Basin. Mar. Pet. Geol. 83, 305–332. Andrić, N., Vogt ...Nemanja Krstekanić, Liviu Matenco, Marinko Toljić, Oleg Mandić, Uroš Stojadinović, Ernst Willingshofer. "Understanding partitioning of deformation in highly arcuate orogenic systems: Inferences from the evolution of the Serbian Carpathians" in Global and Planetary Change, Elsevier BV (2020). https://doi.org/10.1016/j.gloplacha.2020.103361
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A comparison between ARIMA, LSTM, ARIMA-LSTM and SSA for cross-border rail freight traffic forecasting: the case of Alpine-Western Balkan Rail Freight Corridor
Miloš Milenković, Miloš Gligorić, Nebojša Bojović, Zoran Gligorić. "A comparison between ARIMA, LSTM, ARIMA-LSTM and SSA for cross-border rail freight traffic forecasting: the case of Alpine-Western Balkan Rail Freight Corridor" in Transportation Planning and Technology, Informa UK Limited (2023). https://doi.org/10.1080/03081060.2023.2245389