Претрага
800 items
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Age of the Jurassic hemipelagic sediments from the Ljubiš area (Zlatibor Mt., SW Serbia)
Nikita Bragin, Nevenka Đerić (2020)... al., 1999; DJERIĆ et al., 2007, 2012; GAWLICK et al., 2009, 2016, 2018; VISHNEVSKAYA et al., 2009; CHIARI et al., 2011; BRAGIN et al., 2011, 2019a, b) but a lot of the biostratigraphic age dating has still to be undertaken to solve the remaining open questions. The difficult reconstruction of the ...
... 2017) (Unit 1). Five metres of dark greenish- grey thinbedded radiolarites intercalated with greenishgrey cherty claystone follow (Unit 2) (Fig. 5A, B). The next unit in the column is a 0.5 m thick grey massive calcarenite (Unit 3). Further up in the column, there are dark greenish-grey thin-bedded ...
... the Ljubiš Figure 5. Outcrops of the Ljubiš Formation in Djokov Potok. A – grey bedded radiolarites intercalated with grey cherty mudstones, unit 2; B – detail of radiolarite- mudstone intercalation, unit 2; C – grey massive calcarenite, unit 5, below are radiolarites of unit 4; D – bedded radiolarites ...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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Definition of groundwater genesis and circulation conditions of the complex hydrogeological karst system Mlava–Belosavac–Belosavac-2 (eastern Serbia)
Ljiljana Vasić, Saša Milanović, Zoran Stevanović, Laszlo Palcsu. "Definition of groundwater genesis and circulation conditions of the complex hydrogeological karst system Mlava–Belosavac–Belosavac-2 (eastern Serbia)" in Carbonates and Evaporites, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s13146-020-00550-3
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Концепт расположивости при дефинисању ефикасног одржавања помоћне механизације на површинским коповима
Radiša D. Đurić (2016-05-30)Оцена расположивости представља основну компоненту уинжењерском управљању опремом. Расположивост је свеобухватни концепткоји представља меру употребног квалитета техничких система, који садржичитаву серију парцијалних индикатора који се односе на време у раду ивреме у отказу система као и на његову функционалну погодност. Овадисертација даје структурну анализу парцијалних индикатора као и развојмодела њихове синтезе на ниво расположивости. Поменути подаци имајухибридни карактер (измерени и експертски добијени) и њихова интеграцијаи синтеза је остварена коришћењем фази пропозиције и фази закључивања.Овакав приступ омогућава оцену техничког система ...управљање опремом, инжењерство одржавања,расположивост, фази закључивање, прикупљање података, булдозер... дискретне скупове: - идемпотентност: AA = A, AA = A - комуникативност: AB = BA, AB = BA - асоцијативност: A(BC) = (AB)C, A(BC) = (AB)C - дистрибутивност: A(BC) = (AB)(AC), A(BC)=(AB)(AC) - двострука негација: A = A - Де Морганов закон: BABA BABA ...
... Унија фази скупова A и B је фази скуп који истовремено садржи и A и B, и представљена је помоћу функција припадности: AB(x) = maxA(x),B(x) = A(x) B(x) где је логички оператор ''или'', односно оператор максимума. Слика 5.5. Унија фази скупова A и B Докторска дисертација ...
... Пресек фази скупова A и B је фази скуп у који се истовремено садржи и A и B, и представљен је помоћу функција припадности: AB(x) = min A(x), B(x) = A(x)B(x) где је логички оператор ''и'', односно оператор максимума. Слика 5.6. Пресек фази скупова А и B Скуп супротан фази ...Radiša D. Đurić. "Концепт расположивости при дефинисању ефикасног одржавања помоћне механизације на површинским коповима" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-05-30)
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Održivo korišćenje mađarsko-srpskih međugraničnih vodnih tela
Dušan Polomčić, Zoran Stevanović, Saša Milanović, Stanko Sorajić, Bojan Hajdin, Željko Kljajić (2010)... Milanovic S, Hajdin B, Sorajic S, Kljajic Z, 2008: Sustainable development of Hungarian – Serbian transboundary aquifer (SUDEHSTRA), Final Report, Fac. Min. Geol., Belgrade [9] Stevanovi Z., Kozák P., Lazi M., Szanyi J., Polom i D., Kovács B., Török J., Milanovi S., Hajdin B., 2008a: Towards ...
... Milanovic S, Hajdin B, Sorajic S, Kljajic Z, 2008: Sustainable development of Hungarian — Serbian transboundary aquifer (SUDEHSTRA), Final Report, Fac. Min. Geol., Belgrade [9] Stevanovié Z., Kozak P., Lazi¢é M., Szanyi J., Poloméi¢ D., Kovacs B., Torok J., Milanovié S., Hajdin B., 2008a: Towards sustainable ...
... -0 5- 09 13 -0 6- 09 13 -0 7- 09 13 -0 8- 09 13 -0 9- 09 13 -1 0- 09 13 -1 1- 09 13 -1 2- 09 13 -0 1- 10 13 -0 2- 10 Vreme D u b in a d o N P V ( m ) 0 2 4 6 8 10 12 14 16 18 20 T em p. p od z. v od a (0 C ) Bajmok - NPV (m) Subotica - NPV (m) Mali ...Dušan Polomčić, Zoran Stevanović, Saša Milanović, Stanko Sorajić, Bojan Hajdin, Željko Kljajić. "Održivo korišćenje mađarsko-srpskih međugraničnih vodnih tela" in Vodoprivreda 42 no. 04-Jun, Beograd : Jugoslovensko društvo za odvodnjavanje i navodnjavanje (2010): 223-235
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Centar za hidrogeologiju karsta - 15 godina nauke i struke
... Inst. geogr. alpine, VI, fascicule 4, 40 p., Grenoble Filipović B., Dimitrijević N., 1990: Development of hydrogeology until World War || (in SER), Annales Geologiques de la Peninsule Balkanique, liv. LIII/1, Belgrade Tfilipović B.,1997: Hystory of Yugoslay hydrogeology anq leve! of hydrogeological ...
... karst. Manaqement, vulnerability and restoration. McGraw Hill, 708 p. Mijatović B., 1989: Jovan Cvijić - preceđent and founđer of mođern approach in karstoloqy, Vesnik of Geozavod, Vol. 45, p. 5-20, Belqrade Mijatović B., 1997.: Ommage a l'oeuvre de Cvijic sur le karst, In: Monograph “100 Years of ...
... in the Sava River Basin A field trip to NW parts of B&H and karst terrains in the Sava River Basin took place from September 14 to 17, 2017. It was organized by members of KC SGS, CKH, and the Association of Geologists of Republika Srpska (B&H). 15 CKH Mađarska, Austrija, Rumunija, Bugarska ...urednici Saša Milanović, Ljiljana Vasić, Zoran Stevanović, Branislav Petrović. Centar za hidrogeologiju karsta - 15 godina nauke i struke, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet, Centar za hidrogeologiju karsta, 2023
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Mineral and Thermal Waters of Serbia: Multivariate Statistical Approach to Hydrochemical Characterization
Maja Todorović, Jana Štrbački, Marina Ćuk, Jakov Andrijašević, Jovana Šišović, Petar Papić . "Mineral and Thermal Waters of Serbia: Multivariate Statistical Approach to Hydrochemical Characterization" in Mineral and Thermal Waters of Southeastern Europe, Springer International Publishing (2016). https://doi.org/10.1007/978-3-319-25379-4
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Effectiveness Analysis of Different Bucket-wheel Excavators
Coal production in open-pit lignite mines in the Republic of Serbia is performed with continuous work systems. In addition to coal production, the same systems are used for the exploitation of large quantities of overburden. According to the reliability concept, continuous systems are in linear connection. If the failure occurs in one part of the system, that will produce a downtime of the entire system. The initial and most important factor of continuous systems is the bucket-wheel excavator. It ...Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Miloš Tanasijević, Filip Miletić. "Effectiveness Analysis of Different Bucket-wheel Excavators" in 8th International Conference Mining and Environmental Protection, Sokobanja, 22-25 September 2021, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia (2021)
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Terenska nastava iz geofizike: Arheološki lokaliteti na području Trstenika
... Slika 2. Plan i rezultati magnetometrijskih istraživanja na lokalitetu Šljivik - Stragari, a) poligoni merenja, b) karta vertikalnog gradijenta ZMP, c) prikaz filtrirane karte pod b) u formi sen- čenog reljefa, d) pozitivna arheološka sondа (Марковић и др., 2017; Вучковић и др., 2017) 34 C u r ...
... groba, ve- Slika 3. Plan i rezultati geofizičkih istraživanja na lokalitetu Đurovača, a) trase elektro- metrijskih i seizmometrijskih ispitivanja, b) elektrometrijski presek (gore) i seizmometrijski profil (dole), c) pozitivna arheološka sonda, d) izgled savremenog crkvišta, preuređenog od strane ...
... Трстеника- елаборат. Народни музеј Крушевац, Крушевац Говедарица Н., Милошевић А., Новичић Д., Савић Н, Ђукић К., Јовановић Н., Ступар И., Милутин Б., Илић Д., Вујичић П., 2018. Елаборат из предмета: Теренска 36 настава из геофизике 1 и 2 - Резултати геофизичких истраживања на археолошким ...Dragana Đurić, Jelena Vukčević, Dejan Vučković, Ivana Vasiljević, Vesna Cvetkov . "Terenska nastava iz geofizike: Arheološki lokaliteti na području Trstenika" in Aktuelna interdisciplinarana istraživanja tehnologije u arheologiji jugoistočne Evrope: zbornik radova / Prvi skup Sekcije za arheometriju, arheotehnologiju, geoarheologiju i eksperimentalnu arheologiju Srpskog arheološkog društva, 28.02.2020., Beograd, Beograd : Srpsko arheološko društvo (2020)
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O mogućnosti proizvodnog reaktiviranja ležišta cementnih laporaca Ralja kod Beograda
Ilić M., Kričak Lazar, Jagodić-Krunić D., Podunavac D.. "O mogućnosti proizvodnog reaktiviranja ležišta cementnih laporaca Ralja kod Beograda" in Zbornik radova XI Međunarodne Konferencije o površinskoj eksploataciji - OMC 2014, Zlatibor,Srbija:Jugoslovenski komitet za površinsku eksploataciju,Savez inženjera rudarstva i geologije Srbije (2014): 103-111
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Characterization of Natural Clay From Bogovina (Serbia) and Possible Utilization in Sorption of the Herbicides
Lazar Kaluđerović, Zorica Tomić, Rada Đurović-Pejčev, Maja Milošević. "Characterization of Natural Clay From Bogovina (Serbia) and Possible Utilization in Sorption of the Herbicides" in Eurosoil2020, online event 2021, Eurosoil, Frontiers Abstract Book (2021)
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Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal
Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović (2018)glukoza, fruktoza, аktivni ugalj, hidrotermalni tretman, aktivacija hidroksida, teški metali, metilen plavo... 140 min. Minerals 2018, 8, 246 14 of 21 – ln qtqe = k1ttqt = 1k2 · qe2 + 1qe tqt = b · ln(ab) + b · lnt – – – – – – – – Figure 7. Removed amount of MB as a function of the contact time: (a) glucose; (b) fructose. From the presented results, it can be concluded that samples obtained by activating ...
... introducing carbon powders are presented in Figure 6a and b. – – – – – absorption maximums of wavelength λ = 291 nm and λ Figure 6. Absorption spectra of MB solutions (50 mg/dm3) before and 24 h after introducing of activated carbons: (a) glucose and (b) fructose. The solid/liquid ratio was 25 mg/25 cm3 ...
... k2·q2 e + 1 qe t (2) qt = b· ln(ab) + b·lnt (3) where, qe and qt (mg/g) are removed amounts of MB in equilibrium and time t (min), k1 (1/min) and k2 (g/(mg·min)) are constants of rate for pseudo I and II order, respectively, a (mg/(g/min)) is initial rate of MB removal and b (g/mg) is a factor which ...Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović . "Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal" in Minerals, MDPI (2018)
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Kinetics, mechanism, and equilibrium studies of the reactions between a ruthenium(II) complex and some nitrogen- and sulfur-donor nucleophiles
Aleksandar M. Mijatović, Ratomir M. Jelić, Jovana Bogojeski, Živadin D. Bugarčić, Biljana Petrović (2013)Kinetika i mehanizam reakcija supstitucije između [Ru(trpi)(bpi)Cl]+ sa nukleofilima gvanozin-5′-monofosfatom, L-histidinom, tioureom i dimetilsulfoksidom proučavani su spektrofotometrijski u 0,1 M NaClO4 na 310 K. Red reaktivnosti za odabrane ligande je: tiourea > gvanozin-5′-monofosfat > L-histidin > DMSO. Ovaj red je povezan sa elektronskim, strukturnim i hemijskim karakteristikama kompleksa i nukleofila. Reakcija supstitucije sa tioureom je proučavana na tri različite temperature (288, 298 i 310 K). Negativna entropija aktivacije DS = potvrđuje asocijativni način aktivacije. Formiranje kompleksa [Ru(trpi)(bpi)H2O]2+ sa ligandima ...... Med Chem 4:1525 24. Gava B, Zorzet S, Spessotto P, Cocchietto M, Sava G (2006) J Pharmacol Exp Ther 317:284 25. Clarke MJ (2003) Coord Chem Rev 236:209 26. Chen H, Parkinbson JA, Morris RE, Sadler PJ (2003) J Am Chem Soc 125:173 27. Sava G, Bergamo A, Zorzet S, Gava B, Casrsa C, Cocchietto M, ...
... I, Zangrando E, Kljun J, Turel I, Bugarcic ZD, Alessio E (2012) Dalton Trans 41:11608 37. Rilak A, Petrovic B, Grguric-Sipka S, Tresic Z, Bugarcic ZD (2011) Polyhedron 30:2339 38. Tang B, Yu FB, Li P, Tong L, Duan X, Xie T, Wang X (2009) J Am Chem Soc 131:3016 39. Gao YH, Wu JY, Li YM, Sun PP, ...
... 1007/s00706-013-1044-1) contains supplementary material, which is available to authorized users. A.M.Mijatović � J. Bogojeski � Ž. D.Bugarčić � B. Petrović (&) Department of Chemistry, Faculty of Science, University of Kragujevac, R. Domanovića 12, PO box 60, 34000 Kragujevac, Serbia e-mail: ...Aleksandar M. Mijatović, Ratomir M. Jelić, Jovana Bogojeski, Živadin D. Bugarčić, Biljana Petrović. "Kinetics, mechanism, and equilibrium studies of the reactions between a ruthenium(II) complex and some nitrogen- and sulfur-donor nucleophiles" in Monatshefte für Chemie - Chemical Monthly, Springer Science and Business Media LLC (2013). https://doi.org/10.1007/s00706-013-1044-1
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A WebGIS Decision Support System for Management of Abandoned Mines
Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2016)... data. Energies 2016, 9, 567 4 of 14 Figure 1. Main page of the Cadastre of Abandoned Mines of Vojvodina. (a) (b) (c) (d) Figure 2. Selection of (a) visible layers; (b) Search; (c) Legend and (d) Manual. Detailed information about a mine site are shown in a separate page and are grouped ...
... //www.mre.gov.rs/doc/geologija-rudarstvo/zakon%20o%20rudarstvu10.12.pdf (accessed on 1 April 2015). 25. Stanković, R.; Kitanović, O.; Trivić, B.; Blagojević, B.; Prodanović, J. Gis Application, The Management and Administration of Exploratory and Exploitation Permit. In Proceedings of the 3rd International ...
... viewpoint of economic geology three specific phases can be observed related to the exploitation process, namely: (a) mineral resources before exploitation; (b) mineral resources during exploitation; and (c) mineral resources after exploitation. The issue of abandoned mines belongs to the third phase, characterized ...Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis. "A WebGIS Decision Support System for Management of Abandoned Mines" in Energies 7 no. 9 (2016): 567. https://doi.org/10.3390/en9070567
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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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Kristalografsko proučavanje strukturne desimetrizacije granata grosularsko-andraditske izomorfne serije
Pavle I. Tančić (2016-09-21)U ovoj Doktorskoj disertaciji proučavano je pet različitih zona makroskopski zonarnog grandita sa lokaliteta Meka Presedla (Kopaonik, Srbija). Pomoću hemijske i elektronske analize mikroprobe preračunati su relativno visoko homogeni sastavi zona, t.j.: Grs64±1Adr36±1Sps2 (A), Grs62±1Adr38±1Sps2 (B), Grs59±2Adr40±2Sps2 (C), Grs58±2Adr41±2Sps2 (D) i Grs58±1Adr41±1Sps2 (E). Glavne promene u sastavima izražene formulom: Ca2,93-2,97Mn0,05-0,06Mg0,00-0,01Al1,14-1,26Fe3+0,72-0,83Ti0,00-0,02Si2,97-3,02O12 ukazuju da je jedina značajnija varijacija ustanovljena samo kod Al-Fe3+ raspodela u oktaedarskom položaju. Ovakav hemijski sastav je potvrđen i sa matematičkim proračunima iz IC i Raman analiza. Urađena ...Macroscopically zoned grandite, chemical analysis, electron microprobe analysis, Raman, Rietveld, structure, dissymmetrization, space groupPavle I. Tančić. "Kristalografsko proučavanje strukturne desimetrizacije granata grosularsko-andraditske izomorfne serije" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-09-21)
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Pregled hidrodinamičkih istraživanja bunara sa horizontalnim drenovima numeričkim metodama
U radu je predstavljen pregled odabranih hidrodinamičkih istraživanja realizovanih primenom numeričkih metoda simulacije kretanja podzemnih voda pod uticajem rada bunara sa horizontalnim drenovima. Na osnovu pristupa u matematičkom i hidrauličkom tretiranju, kao i numeričkoj simulaciji bunara sa horizontalnim drenovima na modelima, predstavljeni su najznačajniji aspekti izrade hidrodinamičkih modela ovog kompleksnog tipa vodozahvatnog objekta. Metodologija obuhvata izbor: a) graničnih uslova za simulaciju prirodnih granica, izvora prihranjivanja i dreniranja izdani; b) primenjivanog stepena diskretizacije prostora obuhvaćenog modelom u planu i profilu; ...horizontalni bunari, hidraulika bunara, analitički modeli, numerički modeli, hidrodinamičko modeliranje podzemnih vodaĐorđije Božović, Dušan Polomčić, Dragoljub Bajić. "Pregled hidrodinamičkih istraživanja bunara sa horizontalnim drenovima numeričkim metodama" in Vodoprivreda, Srpsko društvo za odvodnjavanje i navodnjavanje (2020)
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Geochemical characterization of sediments from the archaeological site Vinča – Belo Brdo, Serbia
Gorica Veselinović, Dragana Životić, Kristina Penezić, Milica Kašanin-Grubin, Nevenka Mijatović, Jovana Malbašić, Aleksandra Šajnović (2020)Gorica Veselinović, Dragana Životić, Kristina Penezić, Milica Kašanin-Grubin, Nevenka Mijatović, Jovana Malbašić, Aleksandra Šajnović. "Geochemical characterization of sediments from the archaeological site Vinča – Belo Brdo, Serbia" in CATENA, Elsevier BV (2020). https://doi.org/10.1016/j.catena.2020.104914
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The Importance of Detailed Groundwater Monitoring for Underground Structure in Karst (Case Study: HPP Pirot, Southeastern Serbia)
... observation wells PP-1 and PP-3, (b) Comparative plots of groundwater levels in observation well PP-1 and the water level in surface water reservoir, (c) Comparative plots of groundwater levels in observation well PP-3 and the water level in surface water reservoir, by phase (A, B and C). The relatively large ...
... qualitative groundwater data were collected in two primary stages (Table 1), while the tunnel was in operation (Phases A and C) and out of operation (Phase B). Phase A illustrates the state when the tunnel and the hydrogeologic environment were under pressure, while phase C reflects the state when only the ...
... Observation periods. Phase Tunnel Mode Beginning–End of Observation Duration of Phase A Tunnel online, pressurized 28 August 2016–19 September 2016 23 days B Tunnel offline 19 September 2016–24 October 2016 35 days C Tunnel back online 24 October 2016–13 December 2016 83 days A During the campaign, the monitoring ...Marina Čokorilo Ilić, Ana Mladenović, Marina Ćuk, Igor Jemcov. "The Importance of Detailed Groundwater Monitoring for Underground Structure in Karst (Case Study: HPP Pirot, Southeastern Serbia)" in Water, MDPI AG (2019). https://doi.org/10.3390/w11030603
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Using Query Expansion for Cross-Lingual Mathematical Terminology Extraction
Velislava Stoykova, Ranka Stanković (2018)Velislava Stoykova, Ranka Stanković. "Using Query Expansion for Cross-Lingual Mathematical Terminology Extraction" in Advances in Intelligent Systems and Computing, Springer International Publishing (2018). https://doi.org/10.1007/978-3-319-91189-2_16
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The state and perspective of the natural gas sector in Serbia
The strategy of long-term energy development of Serbia identifies an increase of share of natural gas in final energy consumption as one of the main aims. Serbia has signed a strategic agreement with the Russian Federation on cooperation in the oil and gas sector, within which the project South Stream pipeline is planned to be realized. In addition, the Republic of Serbia has signed the Treaty that establishes the Energy Community and accepted the obligation to implement the Energy ...Dejan Ivezić, Marija Živković, Dušan Danilović, Aleksandar Madžarević, Miloš Tanasijević. "The state and perspective of the natural gas sector in Serbia" in Energy Sources, Part B: Economics, Planning and Policy, Taylor & Francis Group, LLC (2016). https://doi.org/http://dx.doi.org/10.1080/15567249.2013.858796