Претрага
569 items
-
Using autonomous GNSS senzors in monitoring of slow moving landslides-a case study
Abolmasov Biljana, Milenković Svetozar, Pejić Marko, Stepanović Goran, Gospavić Zagorka. "Using autonomous GNSS senzors in monitoring of slow moving landslides-a case study" in Proceedings of the International Conference EngeoPro 2011, Moscow, Russia:IAEG, Russian IAEG National Group (2011): 266-270
-
GNSS monitoring klizišta Umka u realnom vremenu
Abolmasov Biljana, Milenković Svetozar, Jelisavac Branko, Vujanic Vladeta, Stepanović Goran. "GNSS monitoring klizišta Umka u realnom vremenu" in Zbornik radova / Četvrto naučno-stručno savetovanje Geotehnički aspekti građevinarstva, Zlatibor, 1.-3. novembar 2011. godine, Beograd, Srbija:Savez građevinskih inženjera Srbije (2011): 205-211
-
Quantity testing of the defects in aluminum plates using pulsed thermography
Tomić Ljubiša, Damnjanović Vesna, Dikić Goran, Milanović Bojan, Bonžulović Boban. "Quantity testing of the defects in aluminum plates using pulsed thermography" in Proceedings of OTEH 2014 (6th International Scientific conference on Defensive Technologies), 9-10 October 2014, Belgrade, Serbia: (2014)
-
The Domain Modeling of Pulsed Flash Thermography by Finite Element Method
Tomić Lubiša, Damnjanović Vesna, Milanović Bojan, Dikić Goran, Bonžulić Boban. "The Domain Modeling of Pulsed Flash Thermography by Finite Element Method" in Photonica 2015, Belgrade:Institut za nuklearne nauke “Vinča” (2015): 203-204
-
Relacija između dubine defekata i termalnog kontrasta na povrsini metala u impulsnoj fles termografiji
Tomić Ljubiša, Milanović Bojan, Bonžulic Boban, Damnjanović Vesna, Dikić Goran. "Relacija između dubine defekata i termalnog kontrasta na povrsini metala u impulsnoj fles termografiji" in ETRAN 2015 MO1.1, Beograd:Drustvo za ETRAN (2015): 01-May
-
Bespilotne letelice u rudarstvu Srbije
Gojković Zoran, Mikanović Radenko, Miloradović Goran, Milutinović Aleksandar, Ganić Aleksandar (2016)Gojković Zoran, Mikanović Radenko, Miloradović Goran, Milutinović Aleksandar, Ganić Aleksandar. "Bespilotne letelice u rudarstvu Srbije" in II Rudarsko-geološki forum “Stanje i pravci razvoja rudarstva i geologije u Republici Srpskoj”, Prijedor, Republika Srpska:Univerzitet u Banjoj Luci, Rudarski fakultet Prijedor, Savez inženjera rudara i geologa Republike Srpske (2016): 177-185
-
Coexistence of several sillenite-like phases in pseudo-binary and pseudo-ternary systems based on Bi2O3,
Dapčević Aleksandra, Poleti Dejan, Karanović Ljiljana, Rogan Jelena, Dražić Goran. "Coexistence of several sillenite-like phases in pseudo-binary and pseudo-ternary systems based on Bi2O3," in Solid State Sciences 184, Radarweg 29; Amsterdam, 1043 NX; Netherlands:Elsevier BV (2013): 93-102. https://doi.org/10.1016/j.solidstatesciences.2
-
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... Polished slab showing axial view of the trace and the location of two thin-sections (Fig.10g, h). (h) Thin-section showing the position of the traces in laminated siltstones viewed in non-polarized light. (h) Thin-section showing plant detritus in fine-grained sediment above D. liebeana viewed in no ...
... & KABON, H. (1999): Neue fossile Floren aus dem Nötscher Karbon (1. Teil).– Carinthia II, 189/109, 637–672, Klagenfurt. VAN AMEROM, H.W.J. & KABON, H. (2000): Neue fossile Floren aus dem Nötscher Karbon (2. Teil).– Carinthia II, 190/110, 483–516, Klagenfurt. VAN AMEROM, H.W.J. & KABON, H. (2000): ...
... POTT, C. & KERP, H. (2014): A reap- praisal of Mississippian (Tournaisian and Visean) adpression floras from central and northwestern Europe.– Zitteliana A, 54, 39–52. doi: 10.5282/ubm/epub.22322 HUBMANN, B., EBNER, F., FERRETTI, A., KIDO, E., KRAINER, K., NEUBAUER, F., SCHÖNLAUB, H.-P. & SUTTNER, ...Miloš Radonjić. "Hyperpycnites within the Devonian-Carboniferous flysch of the Carpatho-Balkanides (Kostadinovica, eastern Serbia)" in Geologia Croatica, Croatian Geological Survey (2020). https://doi.org/10.4154/gc.2020.13
-
Synthesis and characterization of high-pressure and high-temperature sphene (CaTiSiO5)
Jelena Pantić, Vladimir Urbanovich, Vesna Poharc-Logar, Bojan Jokić, Marija Stojmenović, Aleksandar Kremenović, Branko Matović (2014)Sphene (CaTiSiO5), a calcium titanosilicate ceramic has been prepared from a powder mixture of CaCO3, TiO2 and SiO2 using vibro-milling for homogenization and activation of precursors. During the highpressure and high-temperature synthesis (HPS) process at 4 GPa and 1,200 °C, sphene undergoes into phase transition, from room-temperature phase P21/a to high-temperature phase A2/a. Evidence of that structural phase transition is given in this paper using infrared, Raman spectroscopy and X-ray powder diffraction. Rietveld refinement was employed to get the ...Jelena Pantić, Vladimir Urbanovich, Vesna Poharc-Logar, Bojan Jokić, Marija Stojmenović, Aleksandar Kremenović, Branko Matović. "Synthesis and characterization of high-pressure and high-temperature sphene (CaTiSiO5)" in Physics and Chemistry of Minerals, Springer Science and Business Media LLC (2014). https://doi.org/10.1007/s00269-014-0693-x
-
The Potential of Biomarkers to Distinguish Lower and Middle Miocene Lignites from the Coal-Mining District of Lusatia
... abundant diterpenoid in aliphatic fraction of Lower Miocene lignites is 16α(H)-phyllocladane, whereas in Middle Miocene samples it is isopimarane or norabietane. The hopanoid distributions of all samples dominated by C3117(H)21(H)22(R)-hopane, but Lower- and Middle Miocene lignites notably differ according ...I. Kojic, J. Kus, D. Zivotic, K. Stojanovic. "The Potential of Biomarkers to Distinguish Lower and Middle Miocene Lignites from the Coal-Mining District of Lusatia" in 30th International Meeting on Organic Geochemistry (IMOG 2021), European Association of Geoscientists & Engineers (2021). https://doi.org/10.3997/2214-4609.202134092
-
Linear-motor plunger pump increases lifting efficiency
Bojan Martinović, Dušan Đekić, Dušan Danilović, Pavel Isaev. "Linear-motor plunger pump increases lifting efficiency" in Oil & Gas Journal (2022)
-
Dimenzionisanje deponija za ugalj
... termoelektrani. Prosečan časovni kapacitet kopa je 4.000 tona uglja, a potrošnja na termoelektrani je 2.700 t/h, dok je prosečno vreme kopanja uglja 4.500 h/g, a sagorevanja u termoelektrani 6.000 h/g. Da bi se ovo uskladili neophodno je imati bar jednu akumulacionu, bolje reći, izravnavajuću deponiju ...
... l A vg ust S ep te m ba r O kt oba r N ove m ba r D ece m ba r mesec od no s pr oi zv od nj e i p ot ro šn je u gl ja , h ilj ad a to n a Tabela 2. Količina uglja koja se odlaže na deponiju TENT-B Godina Količina uglja dovezena u TENT B, % Ukupna raspoloživa ...
... lignita broj slojeva koji obezbeđuju potrebnu homogenizaciju (na bazi donje toplotne vrednosti) varira od 25-49, što za kapacitete odlaganja od 4-5.000 t/h obezbeđuje formiranje gomile za 24 - 36 sati [7, 9]. Za dve gomile to iznosi 2-3 dana i time se dobija deponija koja je 4-5 puta manja od deponije za ...Dinko Knežević, Božo Kolonja, Ranka Stanković, Aleksandra Tomašević, Dragana Nišić. "Dimenzionisanje deponija za ugalj" in Jedanaesta međunarodna konferencija o površinskoj eksploataciji OMC, 2014, Zlatibor, 15-18 oktoba 2014, Zlatibor : Jugoskovenski komitet za površinsku eksploataciju (2014)
-
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... elements. Starting from room temperature the sample was heated to 1273 K with a rate of 200 K h�1. The maximum temperature was maintained for 12 h. Subsequently, the container was cooled to 1023 K at a rate of 2 K h�1. When reaching a temperature of 1023 K, the furnace was switched off. The resulting material ...
... groups G = P63/mmc and H = Cmcm (subgroup) can be described by the following equations: aor = — (Ahex + Dhex)5 Dor = (Ghex _ Dhex); Cor = Chex (reverse transformation: apex = — ($)(@or — Bor); Dhex = —G)(@or + Dor); Chex = Cor). Actually, there are two other Cmcm subgroups (H’ and H”) that belong to the ...
... Nuss, J., Bussmann-Holder, A., Bamberger, H., van Slageren, J., Enseling, D., Jüstel, T. & Schleid, T. (2018). Cryst. Growth Des. 18, 6316– 6325. Gao, Y., Shen, H., Cao, J., Li, D. & Yang, D. (2019). Opt. Mater. Expr. 9, 4339–4347. Giacovazzo, C., Monaco, H. L., Viterbo, D., Scordari, F., Gilli, G ...Predrag Dabić, Volker Kahlenberg, Biljana Krüger, Marko Rodić, Sabina Kovač, Jovan Blanuša, Zvonko Jagličić, Ljiljana Karanović, Václav Petříček, Aleksandar Kremenović. "Low-temperature phase transition and magnetic properties of K3YbSi2O7" in Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, International Union of Crystallography (IUCr) (2021). https://doi.org/10.1107/S2052520621006077
-
Geostatički proračuni sanacije klizišta šipovima
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... 4, 1975., pp. 43-59. -18, Tuzla, 2000. NAVFAC, Design Manual DM -7.1., Soil mechanics, Department of the Navy, Alexandria, 1982. Poulos, H. G. and Davis, E. H.: Pile foundation analysis and design, John Wiley & Sons, New York, 1980. Tomlinson, M. J.: Foundation design and construction, The Pitman ...
... Tomlinson, 1980) Hansen, 1961) je 1). Figure 1. Brinch Hansen’s method 295 Ома metoda зе одло05! па krute vertikalne Чроуе koji, род dejstvom sile H, гобтаји oko tačke O. Veličina bočnih pritisaka от, koja uzima и obzir trodimenzionalne uslove u kojima se šip nalazi i koja predstavlja razliku bočnih ...
... = 1.2 – 1.5, zemljotresa Fs = 1.1. horizontalne sile Hp šip u kliznom telu (Slika 6). Figure 6. Calculation of pile stability 298 1 2 pF - F = H (2) 1 1 2 2F e = F e (3) o 0 površine Lb Navfac, 1982; Poulos et al., 1980 u silu Hp šipu, a zatim da se izvrši dimenzionisanje šipa. U vezi sa tim ...Slobodan Ćorić, Dragoslav Rakić, Dušan Berisavljević. "Geostatički proračuni sanacije klizišta šipovima" in Zbornik radova osmog naučno-stručnog međunarodnog savetovanja - Geotehnički aspekti građevinarstva, Savez građevinskih inženjera Srbije, (2019)
-
Phase relations and physical indicators of municipal waste from old landfills in Serbia
Due to certain similarities of municipal waste and soil, usually for the determination of basic parameters of physical state, laboratory and field tests which are common in geotechnical investigations are used. It is often to construct an apparatus for special purpose to perform some specific laboratory and field tests. Therefore, different values of indicators of municipal waste physical state can be found in the literature. The basic reasons should be found in different definitions and methods that researchers use ...municipal waste, moisture content, unit weight, specific gravity, grain size distribution, porosityGeneral Computer Science... of degradation and to display their change, if the initial conditions are known. beforc h·odcgrudaum'\ , iibeć- air (a) h, biodegradation Ž::·'l AhA FB, w water(v) h, j air(a) f water (v) Fig. 3. Phase system change of municipal waste during, iodegradation (Gourc and Staub, 2010). Values ...
... physical parameters in a certain stage of biodegradation are determined according to the following expressions: |. O ı_M H[l Ah (1—"0)F n=m An—n„—To Q) 1_Z H() w=w, — 4 G) m where: mx, mya — initial dry mass and mass of drained water Žuo, }a — Initial dry unit weight and dry unit ...
... @523331 the phase composition and physical indicators of iušLte008| Y Horanalysis| municipal waste. In addition, physical properties of •n žž% M:s| ; H n pj ii r waste change over time, both in depth and from · · O waste- location to location, so the method of taking and O selection of representative ...Dragoslav R Rakić, Irena G Basarić Ikodinović, Jovana M Janković, Tina D Đurić. "Phase relations and physical indicators of municipal waste from old landfills in Serbia" in Japanese Geotechnical Society Special Publication, The Japanese Geotechnical Society (2021). https://doi.org/10.3208/jgssp.v09.cpeg016
-
Influence of Ag doping on the morphological and magnetic properties in CuO nanopowders
Maria Čebela, Uroš Čakar, Vesna Lojpur, Maja Milošević, Sanja Krstić, Vladimir Dodevski, Milena Rosić (2023)... Technology, University of Novi Sad, Serbia Dr. Zorica Branković, Institute for Multidisciplinary Research, University of Belgrade, Serbia Dr. Goran Branković, Institute for Multidisciplinary Research, University of Belgrade, Serbia Dr. Zorana Dohčević-Mitrović, Institute of Physics, University ...
... 7 Conference of The Serbian Society for Ceramic Materials SPECIAL THANKS TO Penyoannka Cpouja MIHHIICTAPCTBO HAYKE, TEXHO.TOIIIKOI PA3BOJA H HHOBAIIHJA NATIONAL TOURISM ORGANISATION of SERBIA Turistička organizacija [Q, Beograda 7 Conference of The Serbian Society for Ceramic ...
... temperature, during which a successful reaction between metal nitrate and sodium hydroxide occurred. Prepared powders were calcinated at 700 "C for 2 h. The diffraction pattern was recorded at room temperature and atmospheric pressure without of any re-heating of the sample. The Rietveld method for ...Maria Čebela, Uroš Čakar, Vesna Lojpur, Maja Milošević, Sanja Krstić, Vladimir Dodevski, Milena Rosić. "Influence of Ag doping on the morphological and magnetic properties in CuO nanopowders" in Programme ; and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia , Beograd : Institut za multidisciplinarna istraživanja, (2023)
-
Multiple-Criteria Decision-Making in Mine Development Planning
Sanja Bajić (2023)The Borska Reka ore deposit is an experimental location where developed methodologies have been applied. It is the largest ore body within the Bor mining complex, which has been the subject of numerous studies and analyses for more than three decades. The paper focuses on the application of FAHP and the VIKOR method to address ranking of alternatives and select the optimal mining method by means of fuzzy multicriteria optimization.Sanja Bajić. "Multiple-Criteria Decision-Making in Mine Development Planning" in Proceedings of the 5th International Underground Excavations Symposium, 5-6-7 June 2023, Istanbul, Topkapi : Dinç Ofset Mat. Rek. San. ve Tic. Ltd. Şti. (2023)
-
Mean-based iterative methods for finding multiple roots in nonlinear chemistry problems
Dejan Ćebić, Nebojša M. Ralević (2021)Dejan Ćebić, Nebojša M. Ralević. "Mean-based iterative methods for finding multiple roots in nonlinear chemistry problems" in Journal of Mathematical Chemistry, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s10910-021-01253-3
-
Uticaj utiskivanja gas-lift gasa na prenos mase i toplote
Branko Grubač (2019)Nakon uvođenja kontinualnog gas-lifta, primećen je porast proizvodnje tečnog naftnog gasa, TNG, u postrojenju za preradu gasa, kao jednog od finalnih proizvoda dobijenog iz fluida gaso kondenzatnih i rastvorenog gasa iz naftnih bušotina. Pretpostavljeno je da se prisustvom gas-lift gasa uspostavlja drugačija ravnoteža faza u odnosu na slučaj bez gaslifta, te da je gas-lift gas stripovao propan i butane iz tečne u parnu fazu, što je dovelo do povećanja prinosa TNG-a. Napravljen je model bušotine koja radi u kontinualnom gas-liftu ...... well-rocking/ [11] H. Winkler, S. Smith, Camco gas-lift manual, Camco Inc, Houston, str 20-140, (1962) [12] A. Hasan, C. Kabir, Fluid flow and heat transfer in wellbores, Second edition, Society of Petroleum Engineers, str 23-46, 85-192, (2002) [13] M. Schlumberger, H. Doll, A. Perebinossoff ...
... Chemical Engineering Science, Vol. 49, str 2163-2172, (1994) [67] H. Mukherjee, J. Brill, Pressure drop correlations for inclined two-phase flow, Journal of Energy Resources Technology, Vol. 107, str 549-554, (1985) [68] H. Mukherjee, J. Brill, Liquid holdup correlations for inclined two-phase ...
... Viscosity of liquids, Springer, (2006) [75] H. Zhang, Q. Wang, C. Sarica, J. Brill, Unified model for gas - liquid pipe flow via slug dynamics-part 1: model development, Journal of Energy Resources Technology, Vol. 125, str 266-273, (2003) [76] H. Zhang, Q. Wang, C. Sarica, J. Brill, Unified ...Branko Grubač. Uticaj utiskivanja gas-lift gasa na prenos mase i toplote, Beograd : Rudarsko-geološki fakultet, 2019
-
Efikasnost različitih tipova glina Srbije za adsorpciju metilen plavog
Maja D. Milošević (2016-12-09)Adsorpciona efikasnost različitih uzoraka glina sa lokaliteta Srbije određenaje njihovim tretiranjem različitim koncentracijama rastvora metilen plavog (MP).Detaljna mineraloška karakterizacija ispitivanih glina i rezultati njihove interakcijesa rastvorima MP dobijeni su primenom optičkih, rendgenskih, hemijskih, DTA ispektroskopskih metoda.Na osnovu formiranja MP agregata u izmenljivim pozicijama i površiničestica gline, razlikuju se dva tipa glinovitih minerala: visoko naelektrisani(smektiti) i nisko naelektrisani (kaoliniti). Dimeri se stvaraju na naelektrisanimpovršinama, a granica njihovog razvoja omogućuje determinaciju mineralne vrste.Molekuli MP stoje pod uglom od 21.5o kada se ...minerali glina, metilen plavo, kristali metilen plavog, difuznarefleksija, adsorpcija, flokulacija, naelektrisanje slojeva... molekulski agregati će apsorbovati svetlost i na višim i na nižim talasnim dužinama pa samim tim imaju osobine i H i J agregata (Czimerova et al., 2004). Da bi postojali H dimeri ili veći H agregati potrebno je imati veoma kratko rastojanje između susednih negativnih naelektrisanja. Zapažena su znatna ...
... apsorbovanih katjona sa drugim katjonima iz rastvora. Osnovni katjoni koji se nalaze u pozicijama za izmenu su Ca2+, Mg2+, Na+, K+, Li+ i H+. Na niskim pH vrednostima H+ zamenjuje druge katjone. Redosled katjonske izmene zavisi od naelektrisanja i jonskog radijusa katjona i na toj osnovi može se predstaviti ...
... njihova apsorpcija svetlosti se odigrava na nižim energetskim nivoima tj. na dužim talasnim dužinama u odnosu na H - agregate (Bujdak et al., 2002). Slika 10. Šema strukturnog modela H – agregata (a), J – agregata (b) i dimera formiranih na površini gline (c) (Bujdak and Iyi, 2002) Na agregaciju ...Maja D. Milošević. "Efikasnost različitih tipova glina Srbije za adsorpciju metilen plavog" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-12-09)