Претрага
1402 items
-
XRD dertermination od hydrothermal phases related to epithermal mineralization in the Čukaru Peki deposit
Dragana Bosić, Vladica Cvetković, Miodrag Banješević, Kristina Šarić. "XRD dertermination od hydrothermal phases related to epithermal mineralization in the Čukaru Peki deposit" in V Congress of Geologists of Republic of Macedonia ": “Geology in a changing world”, Makedonsko geološko društvo (2024)
-
Development of the Availability Concept by Using Fuzzy Theory with AHP Correction, a Case Study: Bulldozers in the Open-Pit Lignite Mine
Stevan Đenadić, Dragan Ignjatović, Miloš Tanasijević, Uglješa Bugarić, Ivan Janković, Tomislav Šubaranović (2019)Availability is one of the most used terms in maintainability engineering. This concept is used to denote: The quality of service of an engineering system, i.e., machines, weak points’ analysis, asset management, as well as making decisions in the process of life cycle management. Availability is an overall indicator and contains partial indicators that are oriented towards reliability, maintenance, and logistical support. Availability presents a variable value and changes in time and space. Usually, availability is shown as the ...... Case Study: Bulldozers in the Open- Pit Lignite Mine | Stevan Đenadić, Dragan Ignjatović, Miloš Tanasijević, Uglješa Bugarić, Ivan Janković, Tomislav Šubaranović | Energies | 2019 | | 10.3390/en12214044 http://dr.rgf.bg.ac.rs/s/repo/item/0005582 Дигитални репозиторијум Рударско-геолошког факултета ...
... B3-O R M S R M S R M S R M S R 1 1/2 1/3 1 1 1 1 1/3 1/3 1 2 2 M 2 1 1/2 1 1 1 3 1 1 1/2 1 1 S 3 2 1 1 1 1 3 1 1 1/2 1 1 As a representative example in the continuation of the analysis, the AHP ranking of machine B1-N is given. In the circumstances under consideration, the indicator S has the greatest ...
... 6 0.4 M 0.4 0.6 0.7 0.3 0.5 0.5 S 0.3 0.7 0.6 0.4 0.6 0.4 2. R 0.6 0.4 0.6 0.4 0.3 0.7 M 0.6 0.4 0.8 0.2 0.6 0.4 S 0.5 0.5 0.4 0.6 0.5 0.5 3. R 0.9 0.1 1 1 M 0.4 0.6 0.6 0.4 0.7 0.3 S 0.2 0.8 0.6 0.4 0.7 0.3 4. R 0.5 0.5 0.7 0.3 0.4 0.6 M 0.7 0.3 0.7 0.3 0.7 0.3 S 1 1 0.3 0.7 Σ R 0.450 0.525 0 ...Stevan Đenadić, Dragan Ignjatović, Miloš Tanasijević, Uglješa Bugarić, Ivan Janković, Tomislav Šubaranović. "Development of the Availability Concept by Using Fuzzy Theory with AHP Correction, a Case Study: Bulldozers in the Open-Pit Lignite Mine" in Energies, MDPI AG (2019). https://doi.org/10.3390/en12214044
-
Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae
Hans Peter Nytoft, Geir Kildahl-Andersen, Sofie Lindström, Frode Rise, Achim Bechtel, Danica Mitrović, Nataša Đoković, Dragana Životić, Ksenija A. Stojanović (2019)Two previously unidentified dehydroabietane isomers were isolated from Miocene Serbian lignite and Rhaetian (Late Triassic) coaly mudstones from South Sweden and characterized using NMRspectroscopy as cis- and trans-dehydroicetexane. Both have a 9(10?20)-abeo-abietane or icetexane skeleton, consisting of a 6-7-6 tricyclic framework with seven carbons in ring B instead of the usual six in common diterpanes of the abietane-type. Dehydroicetexanes can be detected using GC-MS-MS in m/z 270?146 chromatograms without interference from dehydroabietane or other isomers. Dehydroicetexanes are often abundant ...Hans Peter Nytoft, Geir Kildahl-Andersen, Sofie Lindström, Frode Rise, Achim Bechtel, Danica Mitrović, Nataša Đoković, Dragana Životić, Ksenija A. Stojanović. "Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae" in Organic Geochemistry, Elsevier BV (2019). https://doi.org/10.1016/j.orggeochem.2019.01.001
-
NMR kinetic studies of the interactions between [Ru(terpy)(bipy)(H2O)]2+ and some sulfur-donor ligands
Aleksandar Mijatović, Biljana Šmit, Ana Rilak, Biljana Petrović, Dragan Čanović, Živadin D. Bugarčić (2012)Reakcije supstitucije monofunkcionalnog [Ru(terpi)(bipi)(H2O)]2+ kompleksa, gde je terpi = 2,2′:6′,2″-terpiridin i bipi = 2,2′-bipiridin, sa biološki relevantnim sumporo donorskim ligandima, kao što su tiourea, l-metionin, l-cistein i glutation, proučavane su u vodenim rastvorima tehnikom 1H i 13C NMR spektroskopije. Sve reakcije su proučavajne na pH 7,4, u prisustvu fosfatnog pufera, da bi se oponašalo fiziološko okruženje tokom procesa supstitucije. Reakcije se izvode na 295 K pod uslovima reakcija drugog reda. Uočeni rezultati pokazuju da brzina supstitucije snažno zavisi ...Aleksandar Mijatović, Biljana Šmit, Ana Rilak, Biljana Petrović, Dragan Čanović, Živadin D. Bugarčić. "NMR kinetic studies of the interactions between [Ru(terpy)(bipy)(H2O)]2+ and some sulfur-donor ligands" in Inorganica Chimica Acta, Elsevier BV (2012). https://doi.org/10.1016/j.ica.2012.09.016
-
Indeksi kontrole održavanja i korišćenja rotornog bagera
Razvoj površinske eksploatacije se u velikom stepenu zasniva na svestranoj mehanizaciji rudarskih radova. Kako bi se zadovoljili potrebni kapaciteti, neophodna je primena savremene mehanizacije, velikih kapaciteta i pouzdanosti u radu. Naime, sa stepenom povećanja mehanizovanosti radova smanjuje se broj zaposlenih radnika, povećava produktivnost rada, smanjuju troškovi po jedinici proizvoda, a samim tim i povećava ekonomičnost površinske eksploatacije. Predmet istraživanja su rotorni bageri SRs 1200 koji predstavljaju samohodne mašine kontinuiranog dejstva namenjene za otkopavanje jalovine i korisne supstance na površinskim ...Jovana Mitrović, Predrag Jovančić, Dragan Ignjatović, Stevan Đenadić, Filip Miletić. "Indeksi kontrole održavanja i korišćenja rotornog bagera" in XI Međunarodna konferencija "Ugalj i kritični minerali 2023", CCM 2023, Zlatibor, 11-14. oktobar 2023., Beograd : Jugoslovenski komitet za površinsku eksploataciju (2023)
-
Crni krečnjaci sa crnim rožnacima donje krede u severnom delu Karpato-Balkanida istočne Srbije (između Žagubice i Malog krša)
Vasić Nebojša, Ljubović Obradović Darivojka, Van der Torn Jastin, Srećković Batoćanin Danica, Davidović Dragana, Avramović Branislav (2014)Vasić Nebojša, Ljubović Obradović Darivojka, Van der Torn Jastin, Srećković Batoćanin Danica, Davidović Dragana, Avramović Branislav. "Crni krečnjaci sa crnim rožnacima donje krede u severnom delu Karpato-Balkanida istočne Srbije (između Žagubice i Malog krša)" in Оптимално истраживање и одрживо коришћење геолошких ресурса : зборник радова XVI конгреса геолога Србије, Donji Milanovac, 22-25.05.2014. : [(национални конгрес с међународним учешћем)] = Optimal Reserach and Sustainable Usage of the Geological Resou, Beograd:Srpsko geološko društvo (2014): 279-280
-
Geochemical evaluation of dolostone deposits in Montenegro: Implications for potential industrial applications
Darko Bozovic, Vladimir Simic, Dragan Radulovic, Slobodan Radusinovic, Vesna Matovic, Anja Terzic (2024)This study presents a unique model for assessing the dependability of continuous parts of combined systems in open-pit mining through the application of fuzzy logic. Continuous sub-systems as part of the combined system of coal exploitation in surface mines have the basic function of ensuring safe operation, high capacity with high reliability, and low costs. These subsystems are usually part of the thermal power plant’s coal supply system and ensure stable fuel supply. The model integrates various independent partial ...примарне сировине, минералогија, физичко-механичка својства, технолошка својства, наука о материјалимаDarko Bozovic, Vladimir Simic, Dragan Radulovic, Slobodan Radusinovic, Vesna Matovic, Anja Terzic. "Geochemical evaluation of dolostone deposits in Montenegro: Implications for potential industrial applications" in Science of Sintering, Bor, August 2024, National Library of Serbia (2024). https://doi.org/10.2298/SOS240701029B
-
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)
-
Microscopical characterization of carbon materials derived from coal and petroleum and their interaction phenomena on making steel electrodes, anodes and cathodes blocks
Predeanu G., Panaitescu C., Balanescu M., Bieg G., Gómez Borrego A., Diez M.A., Kwiecińska B., Marques M., Mastalerz M., Misz-Kennan M., Pusz S., Suárez Ruiz I., Rodriguez S., Singh A.K., Varma A., Zdravkov A., Životić Dragana (2013)Predeanu G., Panaitescu C., Balanescu M., Bieg G., Gómez Borrego A., Diez M.A., Kwiecińska B., Marques M., Mastalerz M., Misz-Kennan M., Pusz S., Suárez Ruiz I., Rodriguez S., Singh A.K., Varma A., Zdravkov A., Životić Dragana. "Microscopical characterization of carbon materials derived from coal and petroleum and their interaction phenomena on making steel electrodes, anodes and cathodes blocks" in 64rd Annual Meeting of the International Committee for Coal and Organic Petrology (ICCP) Book of Abstracts, Sosnowiec, Poland:University of Silesia, Sosnowiec (2013): 108-109
-
Application of the Fuzzy Model in the Evaluation and Selection of Hydraulic Excavators on Open-Pit Lignite Mine
Stevan Đenadić, Miloš Tanasijević, Vladimir Milisavljević, Dragan Ignjatović, Predrag Jovančić (2021)The production of lignite in large open-pit mines is mainly performed with continuously operating equipment, where bucket-wheel excavators, bucket-chain excavators, belt conveyors, and spreaders are the basic machines. Smaller machines, usually of discontinuous operating nature, are commonly categorized as auxiliary machines. This paper presents the research related to the analysis of auxiliary machine parameters with the case study for a hydraulic excavator. The purpose of the analysis was to develop a model of rating quality of service of the ...Stevan Đenadić, Miloš Tanasijević, Vladimir Milisavljević, Dragan Ignjatović, Predrag Jovančić. "Application of the Fuzzy Model in the Evaluation and Selection of Hydraulic Excavators on Open-Pit Lignite Mine" in SSRN Electronic Journal, Elsevier BV (2021). https://doi.org/10.2139/ssrn.3945617
-
Sensitive Determination of Copper on New Modified Glassy Carbon Paste Electrode
Škrivanj Sandra, Stanković M. Dalibor, Khan Muslim, Nikolić S. Aleksandar, Vulić Predrag, Manojlović D. Dragan (2015)Škrivanj Sandra, Stanković M. Dalibor, Khan Muslim, Nikolić S. Aleksandar, Vulić Predrag, Manojlović D. Dragan. "Sensitive Determination of Copper on New Modified Glassy Carbon Paste Electrode" in Analytical & Bioanalytical Electrochemistry 2 no. 7 (2015): 230-241
-
Microscopical characterization of carbon materials derived from coal and petroleum and their interaction phenomena in making steel electrodes, anodes and cathode blocks for the microscopy of carbon materials working group of the ICCP
Predeanu G., Panaitescu C., Bălănescu M., Bieg G., Gómez Borrego A., Diez M.A., Hackley P., Kwiecińska B., Marques M., Mastalerz M., Misz-Kennan M., Pusz S., Suárez Ruiz I., Rodrigues S., Singh A.K., Varma A.K., Zdravkov A., Životić Dragana (2015)Predeanu G., Panaitescu C., Bălănescu M., Bieg G., Gómez Borrego A., Diez M.A., Hackley P., Kwiecińska B., Marques M., Mastalerz M., Misz-Kennan M., Pusz S., Suárez Ruiz I., Rodrigues S., Singh A.K., Varma A.K., Zdravkov A., Životić Dragana. "Microscopical characterization of carbon materials derived from coal and petroleum and their interaction phenomena in making steel electrodes, anodes and cathode blocks for the microscopy of carbon materials working group of the ICCP" in International Journal of Coal Geology 139, Amsterdam, Netherlands:Elsevier BV (2015): 63-79. https://doi.org/10.1016/j.coal.2014.07.011
-
Magnetization enhancement in nanostructured random type MgFe 2O4 spinel prepared by soft mechanochemical route
Antić Bratislav, Jović Nataša, Pavlović Miodrag B., Kremenović Aleksandar, Manojlović Dragan, Vučinić-Vasić Milica, Nikolić Aleksandar S. (2010)Antić Bratislav, Jović Nataša, Pavlović Miodrag B., Kremenović Aleksandar, Manojlović Dragan, Vučinić-Vasić Milica, Nikolić Aleksandar S.. "Magnetization enhancement in nanostructured random type MgFe 2O4 spinel prepared by soft mechanochemical route" in Journal of Applied Physics 4 no. 107, 1155 16TH ST, NW, WASHINGTON, DC 20036 USA:American Institute Physics (2010). https://doi.org/10.1063/1.3319563
-
Primena termografije u rudarstvu
Stevan Đenadić, Vesna Damnjanović, Predrag Jovančić, Dragan Ignjatović, Dragutin Jovković, Filip Miletić (2019)Danas, gotovo da nema oblasti u nauci i tehnici u kojoj se Infracrvena termografija ne primenjuje kao metoda za lociranje i praćenje zagrejanih objekata ili tela, beskontaktnu procenu temperature površina, i nedestruktivno ispitivanje materijala. U radu su prikazane mogućnosti i perspektive primene ove metode u oblasti rudarstva.... Damnjanović, Predrag Jovančić, Dragan Ignjatović, Dragutin Jovković, Filip Miletić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Primena termografije u rudarstvu | Stevan Đenadić, Vesna Damnjanović, Predrag Jovančić, Dragan Ignjatović, Dragutin Jovković, ...
... Vol. 46, 2263-2268, 2013. [6] Lahiri B., Bagavathiappan S., Jayakumar T., Philip J., Medical applications of infrared thermography. Infrared Phys. And Tech., Vol. 55, Issue 4, pp. 221-235, 2012. [7] Mineo S., Calcaterra D., Zampelli S. P., Pappalardo G., Application of Infrared Thermography ...
... Univerzitet u Beogradu, Rudarsko-geološki fakultet 3 Prof. Dr Jovančić Predrag, Univerzitet u Beogradu, Rudarsko-geološki fakultet 4 Prof. Dr Ignjatović Dragan, Univerzitet u Beogradu, Rudarsko-geološki fakultet 5 Jovković Dragutin, Univerzitet u Beogradu, Rudarsko-geološki fakultet 6 Miletić Filip, Univerzitet ...Stevan Đenadić, Vesna Damnjanović, Predrag Jovančić, Dragan Ignjatović, Dragutin Jovković, Filip Miletić. "Primena termografije u rudarstvu" in IX Međunarodna konferencija UGALJ 2019, Zlatibor, Srbija, 23-26. oktobar 2019., Jugoslovenski komitet za površinsku eksploataciju (2019)
-
Overwiew of In-Pit Crushing & Conveying Technology in Open Pit Mines
The conditions under which contemporary surface mining operations is carried out obviously becoming increasingly complex. In such complex conditions, the optimization of haulage systems as the technological phase with the largest share in the total operating costs, is very important from the aspect of achieving profitability of the mining project. In a large number of cases, the application of traditional haulage systems with trucks (as the most dominant type of haulage in open pit mines) does not lead to ...Ali Nasirinezhad, Dejan Stevanović, Dragan Ignjatović, Petar Marković. "Overwiew of In-Pit Crushing & Conveying Technology in Open Pit Mines" in 8th International Conference MIining And Environmental Protection, Sokobanja, 22-25 September 2021, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia (2021)
-
Reciklaža i ponovna upotreba flotacijske jalovine rudnika „Rudnik“ u cilju osvajanja tehnoloških postupaka prerade sekundarnih sirovina u Srbiji – projekat iz programa Prizma (2024-2026) - REASONING
Dragan S. Radulović, Jovica Stojanović, Grozdanaka Bogdanović, Vladimir Simić, Milena Kostović, Vladimir Jovanović, Dejan Todorović, Branislav Ivošević (2023)Velike količine flotacijske jalovine stvaraju se u Srbiji (preko 20 Mt), kao i u svetu (20.000-25.000 Mt). Zbog zaostalih teških metala (Pb, Cu, Fe i Zn...) ona predstavlja potencijalno opasni otpad koji bi trebalo zbog vrednosti plemenitih i obojenih metala u njoj reciklirati. Na Rudniku „Rudnik“ svake godine se generiše oko 250.000 t, flotacijske jalovine, od 1953. god. oko 11 Mt. Naučno istraživačkim radom i obavljenim ispitivanjima u okviru Projekta-REASONING (2024.-2026.) dobiće se rezultati i osvojiće se nova inovativna rešenja ...Dragan S. Radulović, Jovica Stojanović, Grozdanaka Bogdanović, Vladimir Simić, Milena Kostović, Vladimir Jovanović, Dejan Todorović, Branislav Ivošević. "Reciklaža i ponovna upotreba flotacijske jalovine rudnika „Rudnik“ u cilju osvajanja tehnoloških postupaka prerade sekundarnih sirovina u Srbiji – projekat iz programa Prizma (2024-2026) - REASONING" in X Kolokvijum o pripremi mineralnih sirovina, Univerzitet u beogradu, Rudarsko-geološki fakultet,08.12.2023, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet (2023)
-
Analiza obrazovnog sistema i kadrovskog potencijala Republike Srbije u oblasti rudarstva i geologije
Adekvatno postavljen i kontinualno unapređivan sistem obrazovanja predstavlja jasan preduslov za razvoj pojedinca, društva i države u celini. Sistem obrazovanja u Republici Srbiji davno je postavljen, a reforme nisu do kraja sprovedene. Posebno je to izraženo u visokom obrazovanju gde reforma po bolonjskom sistemu nije do kraja sprovedena ili je negativno zloupotrebljena. Trenutno je sistem obrazovanja je pod velikim pritiskom usled oštrih zahteva tržišta rada. U ovom radu je izvršena analiza obrazovnog sistema u oblasti rudarstva i geologije u ...... geologije Dragan Ignjatović, Stevan Đenadić, Predrag Jovančić, Filip Miletić, Jovana Mitrović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Analiza obrazovnog sistema i kadrovskog potencijala Republike Srbije u oblasti rudarstva i geologije | Dragan Ignjatović ...
... obimom opredeljenih finansijskih sredstava za obrazovanje u ukupnim budžetskim rashodima javnih finansija države [1, 2]. Kroz ! Prof. dr Ignjatović Dragan, Rudarsko-geološki fakultet, Beograd, dragan.ignjatovic ergf.bg.ac.rs ? Doc. dr Đenadić Stevan, Rudarsko-geološki fakultet, Beograd, stevan.djenadic ...
... Stevan Đenadić, Predrag Jovančić, Filip Miletić, Jovana Mitrović | XVI Međunarodna rudarska konferencija OMC 2024 | 2024 | | http://dr.rgf.bg.ac.rs/s/repo/item/0009061 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених ...Dragan Ignjatović, Stevan Đenadić, Predrag Jovančić, Filip Miletić, Jovana Mitrović . "Analiza obrazovnog sistema i kadrovskog potencijala Republike Srbije u oblasti rudarstva i geologije" in XVI Međunarodna rudarska konferencija OMC 2024, Jugoslovenski komitet za površinsku eksploataciju (2024)
-
Trace elements in recent sediments of the Danube river in Eastern Serbia and environmеntal impact
Jović Vidojko, Vasić Nebojša, Milovanović Dragan, Rаbrеnović Dragoman, Gajić Violeta. "Trace elements in recent sediments of the Danube river in Eastern Serbia and environmеntal impact" in Humboldt-Koleg Belgrade 2013 – Resources of Danubian Region: The Possibility of Cooperation and Utilization, Beograd:Humbolt-Club Serbia (2013): 44-44
-
Geotehnički uslovi izgradnje tunela „Debelo brdo“ na autoputu E-80 Niš - Pločnik
Tunel „Debelo brdo“ nazvan je po najizraženijem relјefnom obliku na ovoj drugoj deonici autoputa E-80 Niš – Pločnik. Osnovnu geološku građu na lokaciji tunela čini Mio-Plioceni kompleks heterogenog litološkog sastava. Izgradnja tunela je predviđena delom u otvorenom iskopu dužine 240 m, a delom sa podzemnim iskopom dužine 190 m. U zoni tunela, padina je okarakterisana kao uslovno stabilna, pa bi neadekvatna zasecanja mogla da izazovu klizanja terena. Iz tih razloga, u okviru rada posebno su prikazani geotehnički uslovi izgradnje ...... Irena Basarić Ikodinović, Dragan Lukić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Geotehnički uslovi izgradnje tunela „Debelo brdo“ na autoputu E-80 Niš - Pločnik | Dragoslav Rakić, Radojica Lapčević, Irena Basarić Ikodinović, Dragan Lukić | Četvrti Srpski ...
... Srpski kongres o putevima, 2-3. jun 2022. | 2022 | | http://dr.rgf.bg.ac.rs/s/repo/item/0006261 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених доступним у слободном приступу. - Претрага репозиторијума доступна је на ...
... uslove ravnog stanja deformacija (2D), tako da se ali, uz p najbitniji faktor napona oko tunelskog iskopa (p0) i jednoaksijalne ( cm): 0 s cm 2p N Kada je faktor stabilnosti Ns faktor stabilnosti Ns > 1. - j. deo ste Da bi se stepen relaksacije koeficijentom cr, : ...Dragoslav Rakić, Radojica Lapčević, Irena Basarić Ikodinović, Dragan Lukić. "Geotehnički uslovi izgradnje tunela „Debelo brdo“ na autoputu E-80 Niš - Pločnik" in Četvrti Srpski kongres o putevima, 2-3. jun 2022., Beograd : Srpsko društvo za puteve Via Vita (2022)
-
Fenton-like oxidation of an azo dye using mesoporous Fe/TiO2 catalysts prepared by a microwave-assisted hydrothermal process
Nešic Jelena, Manojlović Dragan D, Jović Milica S, Dojčinović Biljana P, Vulić Predrag, Krstić Jugoslav B, Roglić Goran M (2014)Nešic Jelena, Manojlović Dragan D, Jović Milica S, Dojčinović Biljana P, Vulić Predrag, Krstić Jugoslav B, Roglić Goran M. "Fenton-like oxidation of an azo dye using mesoporous Fe/TiO2 catalysts prepared by a microwave-assisted hydrothermal process" in Journal of the Serbian Chemical Society 79 no. 8, Belgrade:Serbian Chemical Society (2014): 977-991. https://doi.org/10.2298/JSC131001143N