Претрага
631 items
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Adsorption and Polymerization of Aniline on Cu(II)-Montmorillonite: Vibrational Spectroscopy and ab Initio Calculation
Batch adsorption experiments in the presence of oxygen were performed to study the interlayer reactions of aniline on Cu(II)-montmorillonite in aqueous solutions. At concentrations below a critical value of CC ) 2.6 mmol dm-3 only a colored Cu(II)-aniline complex is formed, characterized by a stability constant of log(Kassoc/dm3 mol-1) ) 1.5. At concentrations beyond Cc aniline polymerizes yielding a dark brown product, which is identified by two vibrational spectroscopy techniques, attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy and ...M. Ilić, E. Koglin, A. Pohlmeier, H. D. Narres, M. J. Schwuger. "Adsorption and Polymerization of Aniline on Cu(II)-Montmorillonite: Vibrational Spectroscopy and ab Initio Calculation" in Langmuir (2000). https://doi.org/ 10.1021/la000534d
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Lower Berriasian ammonites from Dedina (Golubac Mountains, eastern Serbia) and their biostratigraphic implication
... Berriasella oxycostata (Jacob) in Breistroffer; Mazenot, p. 51, pl. 3 fig. 9a-j, non fig. 10a—c (= Fauriella simplicostata Mazenot). 1953 Berriasella oxycostata (Jacob) in Mazenot; Arnould-Saget, p. 29, pl. 3, figs. 5a-c, 6a–c. 1973 Berriasella (Picteticeras) oxycostata (Jacob); Le Hegarat, p. 78 ...
... snuo/ide|Jeuie|e|}huoy\ —*- snjouip s n u o / g d e y u n d ) 2 u l ) snjejound s n u o / Q d e ) o u n c OjSIJeoqns BiJejeJe5o} — esueuo/(ouq seje2oouanojsqns ___ee- snjejnojossj sojtuejdqnsopnescj —___e- IJouoj s e j u u e J j d q n s o p n o s c e e e — - Jedse '}o ...
... |}- -} -_-L}] E B I J EsH|I ||BLJ-| a -B EaE E s |M | LJ |E | J E || || || A / | | j ||> |M | || }A | | || -i I L J Lj - I - - -| | - { | LJ ||_|| |A|}_| |_{L_| |f= | L J i |Epi|s | s | | 5 / % Bie|||s|P|P{E|S| |*} | # {ls ...Zdenek Vasícek , Dragoman Rabrenović, Petr Skupien, Barbara Radulović. "Lower Berriasian ammonites from Dedina (Golubac Mountains, eastern Serbia) and their biostratigraphic implication" in Cretaceous Research (2023). https://doi.org/10.1016/j.cretres.2023.105623
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Hydrochemical features and their controlling factors in the Kucaj-Beljanica Massif, Serbia
Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeFen Huang, Ljiljana Vasic, Xia Wu, Jianhua Cao, Saša Milanovic. "Hydrochemical features and their controlling factors in the Kucaj-Beljanica Massif, Serbia" in Environmental Earth Sciences, Springer Science and Business Media LLC (2019). https://doi.org/10.1007/s12665-019-8452-4
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Investigation of quantitative indicators of anisotropy based on longitudinal elastic waves propagation velocities with uncertainty
... 0 5 10 15 20 25 30 D e g re e o f a n is o tr o p y , % Serial number of sample Degree of anisotropy for each special isotropic sample including all of the directions DIi,max DIi,min 0.00 50.00 100.00 150.00 200.00 250.00 0 5 10 15 20 25 30 D e g re e o f a n is o tr o ...
... A n is o tr o p y c o e ff ic ie n t, % Serial number of sample Anisotropy coefficient for each special isotropic and anisotropic sample including all of the directions KIi,mean KAi,mean 0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0 1 2 3 D e g re e o f a n is o tr o p y ...
... 120.0 140.0 1 2 3 D e g re e o f a n is o tr o p y , % Number of directions Degree of anisotropy for each special direction icluding all of the anisotropic samples DAj,max DAj,min 0.0 20.0 40.0 60.0 80.0 100.0 120.0 1 2 3 A n is o tr o p y c o e ff ic ie n t, % Number ...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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Ostvarivanje dobiti pri uvođenju sistema agregatnih zamena na osnovnoj rudarskoj mehanizaciji površinskih kopova EPS
Jedan od osnovnih zadataka na površinskim kopovima uglja je ostvarivanje zadovoljavajućeg vremenskog i kapacitetnog iskorišćenja kontinualnih sistema. Da bi se to postiglo, neophodno je izvršiti izmene u postojećoj strategiji održavanja. Preduslov je uvođenje agregatne zamene vitalnih delova na rudarskim mašinama. Benefiti su višestruki. Očekivani rezultati ovakvog pristupa su: smanjenje zastoja i povećanje vremena rada; direktne materijalne uštede; bolja organizacija rada; racionalizaciju radioničkih i magacinskih kapaciteta; povećanje vrednosti mašina. Da bi se uvela agregatna zamena neophodne su investicije za nabavku ...Predrag Jovančić, Ignjatović Dragan, Đenadić Stevan. "Ostvarivanje dobiti pri uvođenju sistema agregatnih zamena na osnovnoj rudarskoj mehanizaciji površinskih kopova EPS" in X Međunarodna konferencija UGALJ, Zlatibor, Srbija, 13-16. Oktobar 2021., Jugoslovenski komitet za površinsku eksploataciju (2021)
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U-Pb zircon geochronology of the Paleogene – Neogene volcanism in the NW Anatolia: Its implications for the Late Mesozoic-Cenozoic geodynamic evolution of the Aegean
E. Yalçın Ersoy, Cüneyt Akal, Ş. Can Genç, Osman Candan, Martin R. Palmer, Dejan Prelević, İbrahim Uysal, Regina Mertz-Kraus (2017)The northern Aegean region was shaped by subduction, obduction, collision, and post-collisional extension processes. Two areas in this region, the Rhodope-Thrace-Biga Peninsula to the west and Armutlu-Almacık-Nallıhan (the Central Sakarya) to the east, are characterized by extensive Eocene to Miocene post-collisional magmatic associations. We suggest that comparison of the Cenozoic magmatic events of these two regions may provide insights into the Late Mesozoic to Cenozoic tectonic evolution of the Aegean. With this aim, we present an improved Cenozoic stratigraphy ...E. Yalçın Ersoy, Cüneyt Akal, Ş. Can Genç, Osman Candan, Martin R. Palmer, Dejan Prelević, İbrahim Uysal, Regina Mertz-Kraus. "U-Pb zircon geochronology of the Paleogene – Neogene volcanism in the NW Anatolia: Its implications for the Late Mesozoic-Cenozoic geodynamic evolution of the Aegean" in Tectonophysics 717 (2017): 284-301. https://doi.org/10.1016/j.tecto.2017.08.016
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Neanderthal Settlement of the Central Balkans during MIS 5: Evidence from Pešturina Cave, Serbia
Dušan Mihailović, Stefan Milošević, Bonnie A.B. Blackwell, Norbert Mercier, Susan M. Mentzer, Christopher E. Miller, Mike W. Morley, Katarina Bogićević, Dragana Đurić, Jelena Marković, Bojana Mihailović, Sofija Dragosavac, Senka Plavšić, Anne R. Skinner, Iffath I.C. Chaity, Yiwen E.W. Huang, Seimi Chu, Draženko Nenadić, Predrag Radović, Joshua Lindal, Mirjana Roksandić (2022)Recent research in the southern Central Balkans has resulted in the discovery of the first Middle Paleolithic sites in this region. Systematic excavations of Velika and Mala Balanica, and Peˇsturina (southern Serbia) revealed assemblages of Middle Paleolithic artifacts associated with hominin fossils and animal bones. This paper focuses on Pesturina Layer 4, radiometrically and biostratigraphically dated to Marine Isotope Stage (MIS) 5, which yielded traces of temporary hunting camps. The remains of large ungulate prey are associated with predominantly ...Dušan Mihailović, Stefan Milošević, Bonnie A.B. Blackwell, Norbert Mercier, Susan M. Mentzer, Christopher E. Miller, Mike W. Morley, Katarina Bogićević, Dragana Đurić, Jelena Marković, Bojana Mihailović, Sofija Dragosavac, Senka Plavšić, Anne R. Skinner, Iffath I.C. Chaity, Yiwen E.W. Huang, Seimi Chu, Draženko Nenadić, Predrag Radović, Joshua Lindal, Mirjana Roksandić. "Neanderthal Settlement of the Central Balkans during MIS 5: Evidence from Pešturina Cave, Serbia" in Quaternary International (2022)
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Stratigraphy and microfossils (radiolarians and planktonic foraminifers) of the Upper Cretaceous (upper Santonian–lower Campanian) Struganik limestone (Western Serbia)
Liubov G. Bragina, Nikita Yu. Bragin, Ludmila F. Kopayevich, Nevenka Đerić, Nataša Gerzina Spajić (2019)Liubov G. Bragina, Nikita Yu. Bragin, Ludmila F. Kopayevich, Nevenka Đerić, Nataša Gerzina Spajić. "Stratigraphy and microfossils (radiolarians and planktonic foraminifers) of the Upper Cretaceous (upper Santonian–lower Campanian) Struganik limestone (Western Serbia)" in Palaeoworld, Elsevier BV (2019). https://doi.org/10.1016/j.palwor.2019.05.001
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Analiza pouzdanosti dozera angažovanih na površinskim kopovima RB Kolubara
U radu je izvršena uporedna analiza pouzdanosti transportnih sistema dozera koji rade na površinskim kopovima Rudarskog basena Kolubara. Period za koji je vršena analiza je prvih deset godina eksploatacije. Efikasnost tehnološkog procesa na otkopavanju korisne mineralne sirovine i otkrivke u velikoj meri zavisi od rada dozera. Iskorišćene su matematičke metode za aproksimaciju i identifikaciju zabeleženih vremena u radu, kako bi se dobili analitički pokazatelji pouzdanosti. Na ovaj način se bitno podiže kvalitet upravljanja procesom eksploatacije i održavanja mašina na ...... Caterpillar D8R Liebherr PR-752; PR-754 Pengpui PD 320Y-1 Shantui SD32 5¸ SD32 W Dressta TD 25 H, M Extra, TD 25E Dressta TD 40 B, C, E, E Extra Stalowa Wola TD 25 G 14. oktobar TG 110 Slika 1. Zastupljenost dozera na površinskim kopovima kolubarskog basena U tablici 2 date su ...
... preko funkcije pouzdanosti Re (t) i indirektno preko funkcije verovatnoće otkaza Fe (t), funkcija gustine otkaza fe (t) i funkcije intenziteta otkaza e (t). Pojam otkaza znači da sistem ili komponenta sistema koja je otkazala ne ispunjava funkciju cilja za koju je projektovana. [6] Zbog velikog broja ...
... 0000 t, h 440,00 440,00 440,00 440,00 440,00 880,00 fe (t), h-1 8,1169E-04 8,1169E-04 2,7056E-04 2,7056E-04 5,4113E-05 2,7056E-05 e (t), h-1 9,8814E-04 1,7483E-03 1,1962E-03 2,5253E-03 1,5152E-03 2,2727E-03 Slika 6. Weibull–ov verovatnosni papir; Liebherr PR 752 Teorijska ...Filip Miletić, Dragan Milčić, Miloš Tanasijević, Miloš Milovančević. "Analiza pouzdanosti dozera angažovanih na površinskim kopovima RB Kolubara" in 10th International Conference Coal 2021, Jugoslovenski komitet za površinsku eksploataciju, Zlatibor (2021)
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New approach to correlation of hydrocarbon reservoirs in sandstone layers of the "Mokrin" field"
Saša Ivanišević, Dejan Radivojević (2018)геофизички каротаж, депозиционе средине, лежишта угљоводоника, миоцен, пост‐ рифтнo, секвенциона стратиграфија... ање и разраду лежишта, Народног фронта 12, 21000 Нови Сад, Србија, e‐mail: sasa.ivanisevic@nis.eu 2) Универзитет у Београду, Рударско‐геолошки факултет, Департман за регионалну геологију, Каменичка 6, 11000 Београд, Србија, e‐mail: dejan.radivojevic@rgf.bg.ac.rs Кључне речи: геофизички каротаж ...
... каротажних кривих (E‐лог маркери), бушотинским подацима и хроностратиграфској по‐ дели, не узимајући у обзир депозиционе средине. На слици 1б приказан је приступ који је коришћен у „индустријском“ препознавању, издвајању и корелацији лежишта A, D, E, F и G као поједин ...
... eering, No. 12 Narodnog fronta Street, 21000 Novi Sad, Serbia, e‐mail: sasa.ivanisevic@nis.eu 2) University of Belgrade, Faculty of Mining and Geology, Regional Geology Department, No. 6 Kamenička Street, 11000 Belgrade, Serbia, e‐mail: dejan.radivojevic@rgf.bg.ac.rs Key words: Well Logging ...Saša Ivanišević, Dejan Radivojević. "New approach to correlation of hydrocarbon reservoirs in sandstone layers of the "Mokrin" field"" in 17th Serbian Geological Congress, Vrnjačka Banja, 17-20 maj 2018, Srpsko geološko društvo (2018)
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An arid phase in the Internal Dinarides during the early to middle Miocene: Inferences from Mg-clays in the Pranjani Basin (Serbia)
N. Andrić-Tomašević, V. Simić, O. Mandic, D. Životić, M. Suárez, E. García-Romero. "An arid phase in the Internal Dinarides during the early to middle Miocene: Inferences from Mg-clays in the Pranjani Basin (Serbia)" in Palaeogeography, Palaeoclimatology, Palaeoecology, Elsevier BV (2020). https://doi.org/10.1016/j.palaeo.2020.110145
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Zn1.86Cd0.14(OH)VO4
Đorđević Tamara, Stojanović Jovica, Karanović Ljiljana. "Zn1.86Cd0.14(OH)VO4" in Acta crystallographica Section E, Structure reports online E66 no. 12, Rosenoerns Alle 1; PO Box 227; Copenhagen V, 1502; Denmark:Blackwell Munksgaard (2010): i79-i79. https://doi.org/10.1107/S1600536810044806
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Early Miocene flora of the intramontane Žagubica Basin (Serbian Carpatho-Balcanides)
Lazarević Zorica, Milivojević Jelena (2010)Lazarević Zorica, Milivojević Jelena. "Early Miocene flora of the intramontane Žagubica Basin (Serbian Carpatho-Balcanides)" in Neues Jahrbuch für Geologie and Palaeontologie, Abhandlungen 2 no. 256, Stuttgart: E. Schweizerbart'sche Verlagsbuchhandlung (2010): 141-150
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Oscillatory zoning in wolframite from Osanica, near Bor, Serbia
Pačevski Aleksandar, Götzinger Michael, Dimitrijević Radovan, Cvetković Ljubomir. "Oscillatory zoning in wolframite from Osanica, near Bor, Serbia" in Neues Jahrbuch für Mineralogie - Abhandlungen 184, :E. Schweizerbart’sche Verlagsbuchhandlung (2007): 151-160. https://doi.org/10.1127/0077-7757/2007/0092
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Asbestos-Based Pottery from Corsica: The First Fiber-Reinforced Ceramic Matrix Composite
Asbestos-containing pottery shards collected in the northeast of Corsica (Cap Corse) and dating from the 19th century, or earlier, have been analyzed by SEM-EDS, XRPD, FTIR and Raman microspectroscopy. Blue (crocidolite) and white (chrysotile) asbestos fiber bundles are observed in cross-sections. Most of the asbestos is partly or totally dehydroxylated, and some transformation to forsterite is observed to occur, indicative of a firing above 800 C. Examination of freshly fractured pieces shows a nonbrittle fracture with fiber pull-out, consistent with ...... presented in form of straight intensity lines at the bottom of the pattern. Na AISi MO|| c a) 0 7| \ Fe W \ Cu 8 > > S Ti š - a E ? E E o 6 i E N| W & ga Fe | p 1 0 5000 10000 O - 500 000 41500 2000 Energy / eV Wavenumber /cm" Figure A3. Representative EDS (left) and Raman ...
... (Si-O-Si stretching; mode) and differences in the vO-H patterns (3300–3800 cm !) are obvious. Si Mg [0] 1598 ca /| Fe / >|\V ž => ŠA 5 E E e c ČI i _ [ P r K) J Cr Ni 3 0 5000 10000 Q0 1000 2000 Energy / eV Wavenumber / cm' Figure 7. Representative EDS (left) and Raman (right) ...
... (right) spectra recorded on some spots of sample c (see Figure 1). Materials 2020, 13, 3597 9of18 a) Fj yrj 5 > | F c -1 [n] = š = _ E [] 328 i E 282 387 1020 2l cez — |(0B1 — 158 1369 15 923, 0 500 1000 1500 2000 -1 Wavenumber / cm O 250 500 750 1000 1250 1500 Wavenumber / cm" ...Philippe Colomban, Aleksandar Kremenović. "Asbestos-Based Pottery from Corsica: The First Fiber-Reinforced Ceramic Matrix Composite" in Materials, MDPI AG (2020). https://doi.org/10.3390/ma13163597
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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 sistem... faults, while the main fault zone is offset by late-stage E-W oriented dextral faults (S5, Fig. 4). The same area shows oblique, top to W or NW normal faults that are both truncated and truncate dextral faults (S5 in Fig. 4, see also Fig. 5d, e). The character of deformation remains similar south of ...
... S20 (Fig. 6) shows that the eastern NNW-SSE oriented strand changes its orientation by splaying into an E-W oriented fault zone associated with ~15 m thick foliated fault gouge (Fig. 7f). This E-W splay is truncated or terminated by the other NNW-SSE oriented strand located to the west. Similar truncated ...
... Global and Planetary Change 208 (2022) 103714 15 4.3. E-W oriented normal faults Outside the main strike-slip fault zones, the Rtanj-Pirot and Sokobanja-Zvonce Faults are connected by gradually rotating to E-W oriented top-N normal faults that are roughly perpendicular to the orogenic ...Nemanja 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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The optimization of auxiliary machinery in open-cast lignite mines: a case study of bulldozers
One of the most important prerequisites for the successful operation of the open-cast lignite mine is to carry out all the auxiliary works timely with the necessary quality. The most important and most commonly used auxiliary machines are bulldozers. Engaging time of bulldozers use is in direct relation with the coefficients of the time and capacity utilization of the continuous system for the excavation of coal and tailings, which indicates their importance. More than 100 bulldozers have been hired ...... classified as follows (Eq. 1): e Ownership costs: o Acquisition cost, including transport, supply, insurance, o Administrative cost, including management, informatics. e Operational costs, which are including labor, auxiliary facilities, installations required for work; e Maintenance costs, which are including ...
... operating on open- cast lignite mine: e Average costs for strong dozers are 63.75 €/mh; e Average costs for very strong dozers are 95.12 €/mh. 288 Limiting costs based оп these уајџез аге defined for strong dozers at 70 C/mh and for уегу strong dozers at 100 е/тћ. Operating costs by years for CAT ...
... Оп the other hand, Dressta TD25M dozer should be replaced after 3 years апа 8,500 working hours. Limiting cost јог all dozers is 70 E/mh [1]. п '/· Dressta TD25M |e /m h| -- 5 б 7 9 10 Year ог изе Figure 4. Diagram јог determination of Птите со515 value for САТ D8R апа Dressta TD25M dozers ...Dragan Ignjatović, Predrag Jovančić, Stevan Đenadić, Ivan Janković, Ivica Ristović. "The optimization of auxiliary machinery in open-cast lignite mines: a case study of bulldozers" in 7th International Symposium Mining and Environmental Protection, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia (2019)
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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... 40 ____ 272 30 Д И 180 7 Н нег i и e = 20 / Д MO рњ О 80 – и јуч / — m __ ју /_„·–, / / рИ ти / з0г ___ __ —> 61.4 10 2 е 257 р K / — рИИИ li — 9.91 K 40 — 250 —y 36.8 q ___ 207 с и 5/ —_ — 5.88 20 | ——— — 24,5 — 15? _а ——— "C —— 17.6 / _— —|s e _J ___M00 __ ______„ljaž 2 РЖИ њ 10 — ...
... 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 sile koju šip može ...
... POVRSINE Analiza stablinosti klizišta, i kosina uopšte, vrši se po pravilu metodama granične ravnoteže i na osnovu toga se određuje faktor sigurnosti Е, (Duncan et al., 2005; Corić, 2017). U trenutku klizanja kosina/klizište se nalazi u stanju granične ravnoteže i faktor sigurnosti je jednak jedinici ...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)
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Zaštita od miniranja
Suzana Lutovac, Miloš Gligorić (2024)Suzana Lutovac, Miloš Gligorić. Zaštita od miniranja, Beograd : Univerzitet u Beogradu - Rudarsko-geološki fakultet, 2024
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Primjena parametara stišljivosti u analizi slijeganja komunalnog otpada
Rakić Dragoslav, Krušić Jelka, Andrejev Katarina, Lazaroski Dušan. "Primjena parametara stišljivosti u analizi slijeganja komunalnog otpada" in e-gf-os – Elektonički časopis građevinskog fakulteta Osijek no. 7, Osijek, Hrvatska:Sveučilište Josipa Jurja Strossmayera u Osijeku, Građevinski fakultet Osijek (2013): 32-42