Претрага
672 items
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Optimising in electrical energy consumption in mining plants
Snežana Aleksandrović, Vesna Damnjanović, Ilija Jeftenić. "Optimising in electrical energy consumption in mining plants" in 17th International Symposium INFOTEH-JAHORINA 2018, Istočno Sarajevo : Elektrotehnički fakultet, Univerzitet u Istočnom Sarajevu (2018)
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Допринос одређивању безопасног растојања при извођењу минирања
... 6p31«1·Ha, yKyHIHa KOJIHUHHa i=1 i-1 i-1 eKCIIJIO3HBa, pacToOjaPbe, KaO H peJIyKOBaHO (3.4) pacrojame Jaro je y TaGemu 3.1. [1]. rne je: N – opoj H3BpIeHHxX Mepehba. N N Nloga - bžXlog x; = Xlog y; i=1 i=l Ta6ejna 3.1. VnaaiHu nojtarıı MUHHpalba H Mepebba P. | Mwumnp. | Mepno r Qu Vy M MI Vimax ...
... EKCIIJIO3HBAa, (kg). 3a onpebuBabe mapaMerpa (Ky) ı (n) yrMaBHOM CC | KOPpHCTH MeCTOJA HajMaMHX KBajipara [3]. JenHaugHa 3.1 ce norapaTMyJe H TaKO CE CBOJIH Ha O0JIHK: log v=log K, — nlog R(3.2) YpBobePeM 3aMeHe: v=y;Ky=a;R=x; n = b; jenHaunHa Jno0unja curentehH OOJTHK: loga-blog x=log ...
... OJL KOJIMUHMHC CKCIMO3MBa (Q), pacrojaP»a (r), ycyoBa HM3BODema MHHHpaMa, KaoO H KapaKTepHcTMHKa TJIa. OBajJ 34aKOH HaM oMoryhaBa ma cc yHaNpc)N 3a CBaKO MHHHP2aMb6 IIporHo3Hpa Op3HHa OCIH;IOBaMba, OJIHOCHO JIA CC HpCJIBHJUH CTCHCH CCH3MHUKOT yTiejcrBa KojH he OaTH H3a3BaH MHHHpaMbeM. Ha OBaj ...Slobodan Trajković, Sanja Bajić, Ivan Krsmanović. "Допринос одређивању безопасног растојања при извођењу минирања" in ДИТ : Друштво истраживање технологије (2023)
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Prostorni položaj ofiolita istočne Vardarske zone: geofizičko-geološki model i njegove geodinamičke implikacije
Dragana D. Petrović (2015-12-29)Centralni deo Balkanskog poluostrva je geotektonski veoma složen. Tetis je zatvorentokom gornjeg mezozoika, a ofioliti na zapadu i ofioliti Vardarske zone predstavljajuostatke nekadašnjih okeanskih prostora. Najistočniji deo Vardarske zone razlikuje se odsvih ostalih ofiolita na Balkanskom poluostrvu i karakteriše se najizraženijim suprasubdukcijskimafinitetom. Istočna vardarska zona locirana je u centralom delu Srbije.Na severu se prostire do Apusena u Rumuniji, a na jugu obuhvata cetralni deoMakedonije i Peonias zonu u severnoj Grčkoj. Istočna vardarska zona se nalazi istočnood geotektonske jedinice Kopaonik ...... b ij en a k o m b in ac ij o m p o d at ak a d al ji n sk e d et ek ci je , te re n sk o g o sm at ra n ja i g ra v im et ri js k ih p o d at ak a; r o ze te z a lo k al n e i re g io n al n e ru p tu re su ta ko đe p rik az an e 66 5. DISKUSIJA ...
... Hoeck, V. and Ionescu, C., 2006. Basic and intermediate volcanics in theEastern Carpathians (Rarău, Romania): are all of them ophiolites? In: Sudar,M., Ercegovac, M., Grubić, A. (Eds.), Proceedings of the XVIIIth Congress of the Carpathian–Balkan Geological Association Belgrade 2006, pp. 219–221 ...
... major and trace element data Sr-Nd-Pb isotopes. Lithos, 131-150, doi: 10.1016/j.lithos.2008.09.007 Tassis, G. A., Grigoriadis, V. N., Tziavos, I. N., Tsokas, G. N., Papazachos, C. B., Vasil jević, I., 2013. A new Bouguer gravity anomaly field for the Adriatic Sea and its application for the study ...Dragana D. Petrović. "Prostorni položaj ofiolita istočne Vardarske zone: geofizičko-geološki model i njegove geodinamičke implikacije" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-12-29)
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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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Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites
Marija Šuljagić, Aleksandar Kremenović, Ivan Petronijević, Adis Džunuzović, Miljana Mirković, Vladimir Pavlović, Ljubica Anđelković (2023)To investigate the effect of synthesis procedure and sintering temperature on the functional properties of perovskite/spinel ceramics, BaTiO3/CoFe2O4 composites were prepared by thermal decomposition, coprecipitation, and microemulsion method, and sintered at 1150°C and 1300°C. The phase composition and morphology of as-prepared powders as well as sintered ceramics were thoroughly examined by X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS). The dielectric and ferroelectric measurements were performed in detail. Generally, the ...Marija Šuljagić, Aleksandar Kremenović, Ivan Petronijević, Adis Džunuzović, Miljana Mirković, Vladimir Pavlović, Ljubica Anđelković. "Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites" in Science of Sintering (2023). https://doi.org/10.2298/SOS220512013S
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Part of Speech Tagging for Serbian language using Natural Language Toolkit
Ranka Stanković, Boro Milovanović (2020)Dok se razvijaju složeni algoritmi za NLP (obrada prirodnog jezika), osnovni zadaci kao što je označavanje ostaju veoma važni i još uvek izazovni. NLTK (Natural Language Toolkit) je moćna Python biblioteka za razvoj programa zasnovanih na NLP-u. Pokušavamo da iskoristimo ovu biblioteku za kreiranje PoS (vrsta reči) oznake za savremeni srpski jezik. Jedanaest različitih modela je kreirano korišćenjem NLTK API-ja za označavanje. Najbolji modeli se transformišu sa Brill tagerom da bi se poboljšala tačnost. Obučili smo modele na označenom ...... mentioned above determined the tags solely on the given token. N-gram tagger takes the context of the token in consideration. Bigram tagger takes that token and the one preceding it. Trigram tagger takes the two tokens before the observed one. N-gram taggers are most effective when combined with lower-level ...
... adjective (ADJ), adposition (ADP), adverb (ADV), auxiliary verb (AUX), coordinating conjunction (CCONJ), determiner (DET), interjection (INTJ), noun (N), numeral (NUM), particle (PART), pronoun (PRON), proper noun (PROPN), punctuation (PUNCT), subordinating conjunction (SCONJ), symbol (SYM), verb (VERB) ...
... distributed as shown in the Table III. TABLE III PART-OF-SPEECH CATEGORY DISTRIBUTION AND MAPPING UD_POS COUNT % N_POS NOUN 42936 21.51% N, N:m, N:f, N:n PUNCT 31477 15.77% PUNCT, SENT VERB 20599 10.32% V, V:m, V:f, V:n ADJ 18949 9.49% A, A:am, A:an, A:af ADP 16540 8.28% PREP AUX ...Ranka Stanković, Boro Milovanović. "Part of Speech Tagging for Serbian language using Natural Language Toolkit" in 7th International Conference on Electrical, Electronic and Computing Engineering IcETRAN 2020, Academic Mind, Belgrade (2020)
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Analogue modelling of strain partitioning along a curved strike-slip fault system during backarc-convex orocline formation: Implications for the Cerna-Timok fault system of the Carpatho-Balkanides
Nemanja Krstekanić, Ernst Willingshofer, Taco Broerse, Liviu Matenco, Marinko Toljić, Uroš Stojadinović (2021)... overall system transfers N–S strike-slip into E-W oriented thrusts and back-thrusts (Fig. 3b). 4.1.2. Formation of the main N–S oriented strike-slip fault After approximately 4 cm of displacement of the mobile sheet (Fig. 3c and d), all Riedel shears are connected and the main N–S ori- ented strike-slip ...
... deformation along the N–S oriented flank of the indenter, trans- pression along the curved indenter segment and contraction at the E-W striking margin of the indenter. The partitioning into these deformation regimes takes place during the entire experiment, although structural N. Krstekanić et al. ...
... top-view photos in the E-W and N–S direction. Basin depths are obtained from the cross-sections. b) Top-view basin location and geometry at the end of each experiment relative to the indenter, taken as the outline of the syn-kinematic sediments in the final top-view photograph. N. Krstekanić et al. ...Nemanja Krstekanić, Ernst Willingshofer, Taco Broerse, Liviu Matenco, Marinko Toljić, Uroš Stojadinović. "Analogue modelling of strain partitioning along a curved strike-slip fault system during backarc-convex orocline formation: Implications for the Cerna-Timok fault system of the Carpatho-Balkanides" in Journal of Structural Geology, Elsevier BV (2021). https://doi.org/10.1016/j.jsg.2021.104386
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Stratigraphy and Microfauna (Radiolarians and Foraminifera) of the Upper Cretaceous (Upper Santonian–Lower Campanian) Carbonate Deposits in the Area of Struganik Village, Western Serbia)
Santonian, Campanian, radiolarians, planktonic foraminifera, biostratigraphy, limestones, Struganik, SerbiaLiubov Bragina, Nikita Bragin, Luidmila Kopaevich, Nevenka Đerić, Nataša Gerzina Spajić. "Stratigraphy and Microfauna (Radiolarians and Foraminifera) of the Upper Cretaceous (Upper Santonian–Lower Campanian) Carbonate Deposits in the Area of Struganik Village, Western Serbia)" in Stratigraphy and Geological Correlation, Pleiades Publishing Ltd (2020). https://doi.org/10.1134/S0869593820010037
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Hronološki pregled razvoja površinske eksploatacije lignita u Srbiji
U ovom preglednom radu dat je istorijski pregled razvoja površinske eksploatacije lignita na teritoriji Srbije, uz kratak osvrt na geološki nastanak i kvalitet i rezerve uglja, kao i mogućnosti korišćenja za dalju upotrebu. Kolubarski, Kostolački i Kovinski ugljeni baseni lignita u Srbiji, ne računajući Kosovsko-Metohijski i Drenički u sastavu AP Kosovo i Metohija po Rezoluciji 1244 UN, su ležišta najrasprostranjenijeg uglja - lignita u Srbiji koji se eksploatiše od druge polovine 20. veka na velikom broju površinskih kopova ...Bojan Dimitrijević, Radmila Gaćina, Bogoljub Vučković. "Hronološki pregled razvoja površinske eksploatacije lignita u Srbiji" in XI Međunarodna konferencija ugalj i kritični mineral CCM 2023, Zlatibor, 11-14. oktobar 2023., Beograd : Jugoslovenski komitet za površinsku eksploataciju (2023)
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Influence of mono- and two-component organic modifiers on determination of lipophilicity of tetradentate Schiff bases
Ispitivani su uticaji primene mono- i dvokomponentnih organskih modifikatora na određivanje lipofilnosti 12 tetradentatnih Šifovih baza metodom reverzno-fazne tankoslojne hromatografije. Osnovni cilj je da se proceni tip interakcije između posmatranih jedinjenja i komponenti primenjenih hromatografskih sistema i uspostavi neki obrazac ponašanja kako bi se lakše izabrala kombinacija organskih modifikatora koji će simulirati interakciju u biološkim sistemima na osnovu činjenica da iste osnovne intermolekularne interakcije su odgovorne za ponašanje supstanci i u biološkom i u hromatografskom sistemu. Primenjeni organski modifikator ...Nikola Stevanović, Aleksandar Mijatović, Aleksandar Lolić, Mario Zlatović, Rada Baošić. "Influence of mono- and two-component organic modifiers on determination of lipophilicity of tetradentate Schiff bases" in Chemical Papers, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s11696-021-01884-5
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Magnetization enhancement and cation valences in nonstoichiometric (Mn,Fe) 3-deltaO 4 nanoparticles
Antić Bratislav, Kremenović Aleksandar, Jović Nataša, Pavlović Miodrag B., Jovalekić Čedomir, Nikolić Aleksandar S., Goya Gerardo F, Weidenthaler Claudia (2012)Antić Bratislav, Kremenović Aleksandar, Jović Nataša, Pavlović Miodrag B., Jovalekić Čedomir, Nikolić Aleksandar S., Goya Gerardo F, Weidenthaler Claudia. "Magnetization enhancement and cation valences in nonstoichiometric (Mn,Fe) 3-deltaO 4 nanoparticles" in Journal of Applied Physics 7 no. 111, CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA:American Institute Physics (2012). https://doi.org/10.1063/1.3700228
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Late and post-collisional tectonic evolution of the Adria-Europe suture in the Vardar Zone
The Vardar Zone is a product of the Triassic-Jurassic opening of the Neotethys, Jurassic obduction, Late Cretaceous/Paleogene consumption of the oceanic crust and continental collision. During the last process, the Eastern Vardar Zone was thrust over the Central and eventually both onto the Western Vardar Zone. The present paleomagnetic and structural study provided new results from the first two zones in the Belgrade area. The younger set of data, together with published ones from the third zone, provide firm ...Emő Márton, Marinko Toljić, Vesna Cvetkov. "Late and post-collisional tectonic evolution of the Adria-Europe suture in the Vardar Zone" in Journal of Geodynamics, Elsevier BV (2022). https://doi.org/10.1016/j.jog.2021.101880
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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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Rezultati ispitivanja parametara čvrstoće i dinamičkih svojstava mermera i mogućnost njihove korelacije
Ispitivanja stena kao radne sredine, odnosno materijala sa kojim se gradi, na kome se gradi i u kome se gradi, svojom složenošću zahteva njeno svestrano izučavanje po velikom broju parametara. Zadatak Mehanike stena je da što bolje upozna ponašanje stenske mase i njenu otpornost na dejstvo pritiska, zatezanja i smicanja, kao i dinamičkih svojstava. Poznavanje navedenih parametara i njihova korelacija omogućavaju pouzdaniji izbor parametara za projektovanje danas sve zahtevnijih uslova kako podzemne, tako i površinske eksploatacije. U ovom radu ...mermer, jednoosna čvrstoća na pritisak, čvrstoća na istezanje, brzina longitudinalnih elastičnih talasa, korelacijaJelena Majstorović-Necković, Vladimir Čebašek, Veljko Rupar. "Rezultati ispitivanja parametara čvrstoće i dinamičkih svojstava mermera i mogućnost njihove korelacije" in 11. Međunarodna konferencija “Ugalj i kritični materijali" CCM 2023, Zlatibor, 11-14. oktobar 2023., Beograd : Jugoslovenski komitet za površinsku eksploataciju (2023)
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Флотабилност халкопирита из полиметаличне руде рудника „Рудник”
Ђурица Н. Никшић (2022)The doctoral dissertation Chalcopyrite flotability from polymetallic "Rudnik" mine ore consists of two parts. The first part is a general part in which the theoretical foundations of the flotation concentration process, the flotation properties of chalcopyrite, the influence of certain flotation reagents and the mechanism of action on the flotation properties of chalcopyrite are presented. This part also describes the process of flotation concentration of polymetallic ore from the "Rudnik" mine. The second part is ...Ђурица Н. Никшић. Флотабилност халкопирита из полиметаличне руде рудника „Рудник”, Београд : [Ђ. Никшић], 2022
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Progress and improvement of the status of groundwater in Serbia, Invited Paper
Dimkić Milan, Stevanović Zoran, Đurić Dušan. "Progress and improvement of the status of groundwater in Serbia, Invited Paper" in Proceedings / IWA Specialist Groundwater Conference, 08-10 September 2011, Belgrade, Serbia, Belgrade: Institute for the Development of Water Resources Jaroslav Èerni (2011): 81-101
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First outcomes from new approach in assessing recharge of highly karstified terrains - cases examples from Montenegro
Radulović Milan, Stevanović Zoran, Radulović Mićko. "First outcomes from new approach in assessing recharge of highly karstified terrains - cases examples from Montenegro" in Advances in Research in Karst Media, Heidelberg:Springer (2010): 25-30
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Haevy minerals in alluvium the river Nera
Vasić Nebojša, Krunić Rajko, Košćal Milan. "Haevy minerals in alluvium the river Nera" in Third International Conference Harmony of nature and spirituality in stone, Kragujevac:Stone Studio Association (2013): 223-234
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An analysis of the impact of errors occuring in the auxiliary parameters while determing geometric corrections of distance
Medved Milan, Ganić Aleksandar, Vulić Milivoj. "An analysis of the impact of errors occuring in the auxiliary parameters while determing geometric corrections of distance" in Geodetski list no. 1, Zagreb, Hrvatska:Hrvatsko geodetsko društvo (2012): 21-38
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A new approach in assessing recharge of highly karstified terrains - Montenegro case studies
Radulović Milan, Stevanović Zoran, Radulović Mićko. "A new approach in assessing recharge of highly karstified terrains - Montenegro case studies" in Environmental Earth Sciences 65 no. 8, New York:Springer-Verlag (2012): 2221-2230. https://doi.org/10.1007/s12665-011-1378-0