Претрага
3269 items
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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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Uticaj proširenja nuklearne elektrane “Pakš” (Mađarska) na resurse podzemnih voda u Vojvodini
Bojan Hajdin, Dušan Polomčić (2016)... svega, aero-zagađenja, kvaliteta po- vršinskih i podzemnih voda i zagađenja tla. Naziv Količina Amonijum hidroksid 1 m 3 Hidrazin 3 t Vodonik 13 m 3 Azotna kiselina 4 m 3 Sumporna kiselina 7 m 3 Hlorovodonična kiselina 53 m 3 Natrijum hidroksid 40 m 3 Bor 6 t Dizel-gorivo 2600 t Transformatorsko ...
... povišenu temperaturu i ispušta se u Dunav), emisije radionuklida i stanja vodostaja reke. Razlika u temperaturi ispuštene (rashladne) vode i vode Dunava (koji je recipijent), na mestu ispuštanja, prema mađarskom zakonu može biti do 11 oC, a na nizvodnom profilu udaljenom 500 m, temperatura rečne vode ...
... vetrom koji tokom godine najčešće ima brzine 1-3 m/s i ravničarskim re- ljefom terena, tako da radioaktivnost od NE “Pakš”, bez (hipsometrijskih) prepreka, na područje naše drža- ve stiže za oko 6 sati. Rečnim tokom, u zavisnosti od vrste zagađivača i vodostaja (brzine toka), zagađenje na granicu sa ...Bojan Hajdin, Dušan Polomčić. "Uticaj proširenja nuklearne elektrane “Pakš” (Mađarska) na resurse podzemnih voda u Vojvodini" in Tehnika 66 no. 5, Beograd : Savez inženjera i tehničara (2016): 777-786. https://doi.org/10.5937/tehnika1604545H
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Groundwater gravitational circulation of Karst Veliko Vrelo and Malo Vrelo springs by isotope and the noble gas method: case study of the Beljanica Massif
Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental ChemistryLjiljana Vasić, Laszlo Palcsu, Huang Fen. "Groundwater gravitational circulation of Karst Veliko Vrelo and Malo Vrelo springs by isotope and the noble gas method: case study of the Beljanica Massif" in Environmental Earth Sciences, Springer Science and Business Media LLC (2019). https://doi.org/10.1007/s12665-019-8294-0
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Is the Sava-Vardar zone a remnant of an Upper Cretaceous ocen? Pro et contra
... S. M. Bemoull, D., Figenschuh, B., Matenco, L., Schefer, S., Schuster, R., ... & Ustaszewski, K. (2008). The Alpine-Carpathian-Dinaridic orogenic system: correlation and evolution of tectonic units. Swiss Journal of Geosciences, 101, 139-183. 3. Prelević, D., Wehrheim, S., Reutter, M., Romer ...
... Romer, R. L., Boev, B., Božović, M., ... & Schmid, S. M. (2017). The Late Cretaceous Klepa basalts in Macedonia (FYROM)— Constraints on the final stage of Tethys closure in the Balkans. Terra Nova, 29(3), 145-153. 4. Cvetković, V., Šarić, K., Grubić, A., Cvijić, R., & Milošević, A. (2014). ...
... Quadt, A. V., Peytcheva, L, Schmid, S. M. & Heinrich, C. A. (2015). Tectonic, magmatic, and metallogenic cvolution of the Late Cretaceous arc in the Carpathian- Balkan orogen. 7Tecfonics, 34, 1813-1836. 6. Sokol, K., Prelević, D., Romer, R. L., Božović, M., van den Bogaard, P., Stefanova, E. ...Vladica Cvetković, Dejan Prelević, Ana Mladenović. "Is the Sava-Vardar zone a remnant of an Upper Cretaceous ocen? Pro et contra" in Fifth Congress of Geologists of the Republic of North Macedonia, Ohrid, 2024, Macedonian Geological Society (2024)
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Cenozoic granitoids in the Dinarides of southern Serbia: age of intrusion, isotope geochemistry, exhumation history and significance for the geodynamic evolution of the Balkan Peninsula
Schefer Senecio, Cvetković Vladica, Fugenschuh Bernhard, Kounov Alexandre, Ovtcharova Maria, Schaltegger Urs, Schmid Stefan M. (2011)Schefer Senecio, Cvetković Vladica, Fugenschuh Bernhard, Kounov Alexandre, Ovtcharova Maria, Schaltegger Urs, Schmid Stefan M.. "Cenozoic granitoids in the Dinarides of southern Serbia: age of intrusion, isotope geochemistry, exhumation history and significance for the geodynamic evolution of the Balkan Peninsula" in International Journal Earth Sci (Geol Rundsch) 100 no. 5, Heidelberg, Germany:Springer-Verlag (2011): 1181-1206. https://doi.org/10.1007/s00531-010-0599-x
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Olivine websterite veins cutting the Rabrovo serpentinites (South Macedonia): New evidence of the arc setting of the East Vardar ophiolites?
Boev Blažo, Prelević D., Božović M., Erić Suzana, Cvetković Vladica. "Olivine websterite veins cutting the Rabrovo serpentinites (South Macedonia): New evidence of the arc setting of the East Vardar ophiolites?" in Prilozi/Contributions 34 no. 01-Feb, Skopje, Republic of Macedonia :Macedonian Academy of Sciences and Arts, Section of Natural, Mathematical and Biotechnical Sciences, MASA (2013): 69-81
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Quartz from allchar as monitor for cosmogenic 26Al: Geochemical and petrogenetic constraints
Pavićević Miodrag, Cvetković Vladica, Amthauer Georg, A Bieniok, Boev Blazo, F Brandstätter, M Götzinger, Jelenković Rade, Prelević Dejan, Prohaska Thomas (2006)Pavićević Miodrag, Cvetković Vladica, Amthauer Georg, A Bieniok, Boev Blazo, F Brandstätter, M Götzinger, Jelenković Rade, Prelević Dejan, Prohaska Thomas. "Quartz from allchar as monitor for cosmogenic 26Al: Geochemical and petrogenetic constraints" in Mineralogy and Petrology 88, Heidelberg, Germany :Springer-Verlag (2006): 527-550. https://doi.org/10.1007/s00710-006-0134-8
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The Late Cretaceous Klepa basalts in Macedonia (FYROM)—Constraints on the final stage of Tethys closure in the Balkans
Dejan Prelević, Simon Wehrheim, Magnus Reutter, Rolf L. Romer, Blažo Boev, Milica Božović, Paul van den Bogaard, Vladica Cvetković, Stefan M. Schmid (2017)Dejan Prelević, Simon Wehrheim, Magnus Reutter, Rolf L. Romer, Blažo Boev, Milica Božović, Paul van den Bogaard, Vladica Cvetković, Stefan M. Schmid. "The Late Cretaceous Klepa basalts in Macedonia (FYROM)—Constraints on the final stage of Tethys closure in the Balkans" in Terra Nova no. 29 (2017): 145-153. https://doi.org/10.1111/ter.12264
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The ‘Umka’ landslide
We present an in-depth landslide map of the ‘Umka’ landslide near Belgrade, Serbia, at a scale of 1:5000. The map delineates elements at risk, primarily buildings and road infrastructure impacted by the landslide displacements of several cm per year, introduced during frequent reactivation stages. The Main map results from a survey of over 350 buildings and more than 7 km of state and local roads. The acquisition techniques included engineering geological field mapping, building survey, and visual interpretation of ...rizik od klizišta, elementi rizika, kartiranje pomoću drona, ispitivanje objekata, geotehnički monitoringUroš Đurić, Dragana Đurić, Miloš Marjanović, Biljana Abolmasov, Ivana Vasiljević. "The ‘Umka’ landslide" in Journal of Maps, Informa UK Limited (2024). https://doi.org/10.1080/17445647.2024.2418580
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Failure Estimation of the Majdanpek Open Pit East Face Based on Inverse Velocity Model
The Majdanpek open pit mine south district is currently active mining prospect of copper ore exploitation in eastern Serbia. Its depth is approaching the termination depth and occurrences of large-scale instabilities and global instability of the final pit slope is possible. These can generate catastrophic mass movement inside an area that encloses a regional road route and the Pek River bed which is channelled along the outer contour of the pit. The displacements that were noted in early 2023, in the ...Miloš Marjanović, Stefan Milanović, Nikola Simić, Lazar Kričak. "Failure Estimation of the Majdanpek Open Pit East Face Based on Inverse Velocity Model" in Regional Symposium on Landslides in the Adriatic-Balkan Region, Belgrade, 15-18th May 2024, University of Belgrade, Faculty of Mining and Geology (2024). https://doi.org/10.18485/resylab.2024.6.ch46
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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 ...... 1000- E 500- ok——— | Tremolite, 01-086-1319. j | i I\\\„\M ML _L ı . j ıl | I[SWVi | THE - Diopside, 00-017-0318. j L | l a · || ı - Actinolite, heated, 01-089-5367 i ii | uartz, 00-001-0649 j ı ı ı | 3 Talc 1A, 01-082-8123 i dı ı a |l ' 10 20 30 40 50 60 70 4000-| 8 3000 8 ...
... top left of sample b (spectrum #0) and on the section of a large grain (#4). Materials 2020, 13, 3597 B8of18 Al M 'l Fe 7: ca K ·•š V J cCr Š' |-- i 4 | : I_ E = i ca 5 ež | S : 1032 1062 Fe N Ni 0 0 5000 10000 o 250 500 750 1000 1250 Energy / eV Wavenumber / cm” Figure ...
... Econ. Environ. Geol. 2016, 49, 77–88. [CrossRef] Rooney, J.; Tarling, M.; Smith, S.; Gordon, K. Sub-micron raman spectroscopy mapping,of serpentinite fault rocks. J. Raman Spectrosc. 2018, 49, 279-286. [CrossRef] Dodony, I.; Buseck, P.R. Serpentines close-up and intimate: An hrtem view. Int. Geol ...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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Modeliranje tehnoloških procesa u rudarstvu u uslovima nedovoljnosti podataka primenom teorije grubih skupova
Zoran M. Štirbanović (2015-07-01)Rudarstvo, a u okviru njega i priprema mineralnih sirovina, se odlikuje složenošću tehnoloških procesa što je posledica velikog broja uticajnih parametara. Samim tim je potrebno biti veoma obazriv prilikom donošenja odluka u oblasti rudarstva. U cilju što efikasnijeg funkcionisanja procesa, moguće je primeniti različite metode koje služe za pojednostavljenje procesa odlučivanja. Jedna od takvih metoda jeste i teorija grubih skupova. Ona predstavlja relativno novu matematičku teoriju koja je pogodna za razumevanje nepreciznih i nepotpunih podataka kao i za otkrivanje ...rudarstvo, priprema mineralnih sirovina, teorija grubih skupova, višekriterijumsko odlučivanje, flotacijsko jalovište, flotacijski kolektor, flotaciona mašina... prema sledećim koracima: 1. Određivanje najboljih fj* i najgorih fj- vrednosti za sve funkcije kriterijuma, j=1, 2,...,m. Ako j-ta funkcija predstavlja dobiti tada: i j i j ijff ijff min max* =− = 2. Računanje vrednosti Si i Ri, i = 1, 2, …, n, prema relacijama: ( ) ( )∑ = −−−= n j ...
... nmmnn mm mm n m nmnn m m n m rwrwrw rwrwrw rwrwrw A A A CCC vvv vvv vvv A A A CCC V 2211 2222211 1122111 2 1 21 21 22221 11211 2 1 21 3. Određivanje idealnih rešenja Idealno rešenje A+ i negativno idealno rešenje ...
... razlikovanja od B ⊆ A, M(B), podrazumevamo matricu n x n definisanu kao: �𝑐𝑖𝑗� = �𝑎 ∈ 𝐵:𝑎(𝑥𝑖) ≠ 𝑎�𝑥𝑗�� za 𝑖, 𝑗 = 1,2, … ,𝑛. Prema tome cij je skup svih atributa koji razaznaju (razlikuju) objekte xi i xj. Matrica razlikovanja M(B) dodeljuje svakom paru objekata x i y podskup atributa ...Zoran M. Štirbanović. "Modeliranje tehnoloških procesa u rudarstvu u uslovima nedovoljnosti podataka primenom teorije grubih skupova" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-07-01)
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Age of the Jurassic hemipelagic sediments from the Ljubiš area (Zlatibor Mt., SW Serbia)
Nikita Bragin, Nevenka Đerić (2020)... Eucyrtidiellum sp. cf. E. unumaense s.l. (YAO); H – Quarticella sp.; I – Parvimitrella sp.; J – Campanomitra? sp. A sensu O’DOGHERTY, GORIČAN & GAWLICK, 2017; K – Praewilliriedel- lum sp.; L – Hsuum sp. cf. H. matsuokai ISOZAKI & MATSUDA; M – Praewilliriedellum convexum (YAO); N – Parahsuum sp. cf. P. izeense ...
... veghae (GRILL & KOZUR); P – Praewilliriedellum convexum (YAO). Figs. A-C, E-I – sample 15-10-7; Figs. J, K – sample 15-10-8; Figs. D, L-P – sample 15-10-10. Scale bar – 80 μm for figs. C, N and P; 50 μm for figs. A, B, D-M, O. G eo lo g ia C ro a tica Bragin and Djerić: Age of the Jurassic ...
... tetraspinus (YAO); G – Transhsuum sp.; H – Eoxitus baloghi KOZUR; I – Takemuraella veghae (GRILL & KOZUR); J – Pseudoristola sp. cf. P. durisaeptum (AITA); K – Parahsuum sp. cf. P. indomitum (PESSAGNO & WHALEN); L – Mizukidella sp.; M – Hsuum sp.; N – Theocapsomella sp.; O – Japonocapsa fusiformis ...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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Развој модела конструкције просторија отварања рудника са подземном експлоатацијом
Dražana M. Tošić (2016-08-26)Приликом израде подземних просторија у стјенској маси долази до нарушавања природне равнотеже напонских стања стијенског масива који су владали прије израде тих просторија, при чему долази до појаве прертасподјеле напона и његове концентрације у појединим правцима и тачкама, односно долази до појаве пластичних деформација које су праћене ломљењем стијенске масе и кретањима материјала према откопаном простору...модел, метод коначних елемената, просторија отварања, напон, дефеормација стијенског масива, алгоритам функционалних зависностиDražana M. Tošić. "Развој модела конструкције просторија отварања рудника са подземном експлоатацијом" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-08-26)
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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 ...... 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 osnovne karakteristike dozera sa aspekta prosečne starosti, prosečnih i godišnje ostvarenih ...
... sistema, Univerzitet u Nišu, Fakultet zaštite na radu, 2017.; [5] Maksimović S. Sistem menadžmenta kvaliteta i preventivno održavanje, 32 Konferencija o kvalitetu, Kragujevac, 2005.; [6] Tomašević M. Model za donošenje odluka u procesima prepoznavanja tipa funkcije pouzdanosti brodskih postrojenja, Doktorska ...
... Doktorska disertacija, Univerzitet u Novom Sadu, Tehnički fakultet Mihajlo Pupin, Zrenjanin, 2007.; [7] Milčić D., Mijailović M. Analiza pouzdanosti mašinskih delova i sistema u okruženju Microsoft Excel, Infoteh–Jahorina Vol. 10, Ref. C-8, p. 273-277, Mart 2011; [8] Ashish S., Muni S. Regression analysis ...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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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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Granatski amfiboliti Bistrice
Jovana Opančina (2024)Predmet ispitivanja ovog završnog rada su granatski amfiboliti Bistrice. Izvršena su petrografska i hemijska ispitivanja s ciljem da se odredi stepen metamorfizma, protolit ispitivanih stena i P-T uslovi nastanka. Ispitivani granatski amfiboliti geografski pripadaju Prijepolju, tačnije nalaze se na ulasku u Prijepolje, mesto Bistrica. Geološka građa obuhvata uglavnom mezozojske tvorevine među kojima se nalaze sedimentne, magmatske i metamorfne stene. Geološki procesi koji su doveli do stvaranja amfibolita su procesi subdukcije i obdukcije koji su se pretpostavljamo dešavali na većim ...Jovana Opančina. Granatski amfiboliti Bistrice, 2024
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Atmospheric exposure vs burying: influences on damage intensity of built-in kersantite in the monument of the Small Staircase (Belgrade, Serbia)
Proučavan je efekat „zatrpanog kamena“ na intenzitet procesa degradacije prisutnih na kersantitu koji je ugrađen u spomenik Malo stepenište. Istraživanja su vršena na uzorcima stene iz kamenoloma i na oštećenim kamenim blokovima ugrađenim u spomenik. Dok su neki delovi stepeništa bili pod zemljom 90 godina, većina kamenih elemenata je bila izložena različitim uslovima sredine i antropogenim uticajima. Urađeno je detaljno mapiranje trenutnog stanja spomenika kako bi se istražio uticaj “zatrpavanja” i kompleksne geometrije spomenika na tip propadanja i variranje ...Nevenka Novaković, Predrag Dabić, Vesna Matović. "Atmospheric exposure vs burying: influences on damage intensity of built-in kersantite in the monument of the Small Staircase (Belgrade, Serbia)" in Environmental Earth Sciences, Springer Science and Business Media LLC (2023). https://doi.org/10.1007/s12665-023-10794-6
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Fuzzy expert analysis of the severity of mining machinery failure
Mining machinery failure is almost an everyday occurrence. Usually the failures bare certain consequences, which require additional financial costs to repair and restore the system to its operational state. The consequences are viewed through negative and damaging effects a failure has on the machine, health and safety of the employees, work environment, and on the environment. The removal of the consequences of the failure requires additional financial investment, which has a negative impact on the company’s business. In order ...Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković. "Fuzzy expert analysis of the severity of mining machinery failure" in Applied Soft Computing, Elsevier BV (2020). https://doi.org/10.1016/j.asoc.2020.106459
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A necessary and sufficient condition for an algebraic integer to be a Salem number
Dragan Stankov (2019)We present a necessary and sufficient condition for a root greater than unity of a monic reciprocal polynomial of an even degree at least four, with integer coefficients, to be a Salem number. This condition requires that the minimal polynomial of some power of the algebraic integer has a linear coefficient that is relatively large. We also determine the probability that an arbitrary power of a Salem number, of certain small degrees, satisfies this condition.Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomialsDragan Stankov. "A necessary and sufficient condition for an algebraic integer to be a Salem number" in Journal de theorie des nombres de Bordeaux (2019). https://doi.org/10.5802/jtnb.1076