Претрага
2436 items
-
Flyrock induced by blasting in surface mining
Milanka Negovanović, Lazar Kričak, Snežana Ignjatović, Stefan Milanović, Jovan Marković, Nikola Simić, Rade Šarac (2022)Miniranje predstavlja i dalje najefikasniji i najjeftiniji način eksploatacije velikih količina čvrstih mineralnih sirovina na površinskim kopovima. Energija eksplozije se koristi za fragmentaciju čvrste stenske mase do zahtevane granulacije. Pored pozitivnih efekata miniranja, postoje i određeni neželjeni efekti svakog procesa miniranja koji se mogu javiti, a to su: potresi tla, razletanje komada stene, vazdušni udari, otrovni i zagušljivi gasovi i prašina. Razletanje komada stene je nekontrolisano izbacivanje fragmenata odminirane stenske mase i predstavlja jedan od glavnih izvora materijalne štete ...Milanka Negovanović, Lazar Kričak, Snežana Ignjatović, Stefan Milanović, Jovan Marković, Nikola Simić, Rade Šarac. "Flyrock induced by blasting in surface mining" in Rudarski glasnik, Beograd : Rudarski institut (2022). https://doi.org/10.25075/BM.2022.05
-
Projection of SO2 emissions in coal power plants in Serbia
Aleksandar Madžarević, Predrag Jovančić, Stevan Đenadić, Filip Miletić, Miodrag Ristović, Miroslav Crnogorac (2023)The production of electricity in the countries of South-Eastern Europe (SEE) was mainly related to the use of coal, predominantly lignite. The total installed capacity of thermal power plants using coal in these seven countries is 17.813 MW, distributed in 31 thermoblocks. The mentioned plants are the dominant pollutant emitters in all observed countries. Data on the largest emitters in the countries of the European Union and a comparison with SEE countries were collected. The calculation of emissions of ...... events of a political and economic nature on the soil of Europe have influenced the intensity of the change in energy sources, so the process of removing coal from clectricity generation has greatly intensified. In 2021, for the first time in the area of the European Union, more electricity was generated ...
... 102470 Ratio to the area of the territory [SO>»/km-] 3,15 0,33 Ratio to the number of inhabitants [kgSOyx/st] 40,88 1,23 Ratio to electricity production [keSOx/MWh] 11,63 0,70 3. PROJECTION OF SO; EMISSIONS By studying the data on the amount of sulfur in the coal seam, the expected exploitation ...
... operation, based on the operating parameters of the system. Until 2021, the Kostolac B thermal power plant was one of the biggest sulfur dioxide polluters in Europe. In 2021, the Kostolac B thermal power plant began to reduce sulfur dioxide emissions due to the start of operation of the desulfurization ...Aleksandar Madžarević, Predrag Jovančić, Stevan Đenadić, Filip Miletić, Miodrag Ristović, Miroslav Crnogorac. "Projection of SO2 emissions in coal power plants in Serbia" in 9th International Conference Mining and environmental protection, Sokobanja 24-27th May 2023., Belgrade : University of Belgrade, Faculty of Mining and Geology (2023)
-
Valorization of non-balanced coal reserves in Serbia for underground coal gasification
David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić (2019)In the name of a better and safer energy future, it is our responsibility to focus our knowledge and activities to save on imported liquid and gas fossil fuels, as well as coal on which energy security of Serbia is based. The rationalization in the use of available energy resources certainly positively affects economy and the environment of a country. This paper indicates motivations for the application of the underground coal gasification process, as well as surface gasification for ...... pollute the atmosphere by the products of self-ignition on the landfills, and — there is no need for recultivation of the terrain, since after the completion of the gasification, the terrain again resumes the same purposes from before gasification, and considerable areas are used during the UCG in ...
... features of the UCG The commercial sustainability of the UCG process will primarily depend on geolog- ical constraints. The UCG with the obligation to separate CO, from the gas mixture of UCG, and its possible storage carbon capture and storage, depends on the technological development of the separation ...
... knowledge of the geology of the planned location for the UCG, — possible inability to drill the required wells, often with higher accuracy (high level of preci- sion is possible nowadays), — Work with possible inadequate parameters of the UCG, because the work on the application of the UCG requires ...David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić. "Valorization of non-balanced coal reserves in Serbia for underground coal gasification" in Thermal Science (2019). https://doi.org/10.2298/TSCI190725390P
-
Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling
Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeBranislav Petrović, Veljko Marinović, Zoran Stevanović. "Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling" in Environmental Earth Sciences, Springer Science and Business Media LLC (2023). https://doi.org/10.1007/s12665-023-10911-5
-
Risk Evaluation: Brief Review and Innovation Model Based on Fuzzy Logic and MCDM
Stevan Djenadic, Milos Tanasijevic, Predrag Jovancic, Dragan Ignjatovic, Dejan Petrovic, Ugljesa Bugaric (2022)The risk assessment of engineering systems represents an important part of the quality of service and dependability. The existing methods for risk evaluation use crisp sets for rating partial indicators’ proposition and their cumulative products as an overall indicator. In this paper, existing FMEA and FMECA methods have been improved using the fuzzy expert system for calculating the risk priority number. The application of fuzzy logic allows the use of linguistic descriptions for risk analysis. In this way, the ...Stevan Djenadic, Milos Tanasijevic, Predrag Jovancic, Dragan Ignjatovic, Dejan Petrovic, Ugljesa Bugaric. "Risk Evaluation: Brief Review and Innovation Model Based on Fuzzy Logic and MCDM" in Mathematics, MDPI AG (2022). https://doi.org/10.3390/math10050811
-
Speleo‐morphology and tectonic processes – What can be seen in slowly deforming regions?
Ana Mladenović, Jelena Ćalić (2022)There are a lot of methods used to determine tectonic process active in a region, and they vary depending on the purpose of the research. However, a number of them cannot be used in slowly deforming regions, because the effects of active tectonic process on the rocks in such regions could be negligible. This is especially true for the recently active tectonics in such regions, since most of the recently active tectonic structures never reach the surface. Because of ...Ana Mladenović, Jelena Ćalić. "Speleo‐morphology and tectonic processes – What can be seen in slowly deforming regions?" in 18th International Congress of Speleology, Savoie Mont Blanc, 24-31 July 2022, Postojna : International Union of Speleology (2022)
-
Modeliranje i simulacija energetske tranzicije u sektoru domaćinstava
Boban S. Pavlović (2022)Aktuelnu energetsku tranziciju odlikuje ubrzanje procesa dekarbonizacije energetskih sistema, unapređenje energetske efikasnosti, razvoj čistijih tehnologija baziranih na obnovljivim izvorima energije i održivije korišćenje prirodnih resursa. Da bi se napravio ovako krupan zaokret u postojećim energetskim sistemima, osim promene postojećih tehnologija, potrebno je u planiranje energetske tranzicije uključiti i političke, sociološke, ekonomske i ekološke aspekte, a pre svega obrasce ponašanja i donošenja odluka krajnjih potrošača. Predmet istraživanja u disertaciji je energetska tranzicija sektora domaćinstva, preciznije tranzicija u grejanju domaćinstava, imajući u ...energetika, energetska tranzicija, energetsko planiranje, energetsko modeliranje, obnovljivi izvori energije, domaćinstva, ponašanje potrošačaBoban S. Pavlović. Modeliranje i simulacija energetske tranzicije u sektoru domaćinstava, Beograd : [B. Pavlović], 2022
-
Callovian (Middle Jurassic) Sphriganaria (Brachiopoda) from the Jordan Valley (Middle East)
Howard R. Feldman, Barbara V. Radulović, Fayez Ahmad. "Callovian (Middle Jurassic) Sphriganaria (Brachiopoda) from the Jordan Valley (Middle East)" in Historical Biology (2023). https://doi.org/10.1080/08912963.2022.2122823
-
Some examples of interactions between certain rare earth elements and soil
... distilled water up to the line. The solutions prior to mixing and the solutions after the mixing were analyzed by ICP-OES. The values have been presented in Table II.17 The values obtained were graph presented as the dependence of the metallic ion adsorbed mass per mass of adsorbent on the equilibrium c ...
... effects. The suitability of the method presented is reflected in its simplicity, namely the rare earth elements ions can be extracted by this method from a complex matrix. The environment contamination on the occasion of these elements production is evident. Excepting their natural occurrence, the ant ...
... and neodymium. The interaction of certain rare earth elements with soil components has been tested as well as the quantity in which these elements are bound to soil and later on extracted in solutions. The objective was to determine the soil capacity for disposal, first of all, of the electronic waste ...Zlatko Nikolovski, Jelena Isailović, Dejan Jeremić, Sabina Kovač, Ilija Brčeski. "Some examples of interactions between certain rare earth elements and soil" in Journal of the Serbian Chemical Society, National Library of Serbia (2021). https://doi.org/10.2298/JSC211006095N
-
A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)
... Field falls within the municipalities of Lajkovac and Ub, near the villages of Kalenić, Mali Borak, Radljevo and Skobalj. To the west and south, the mine borders on the exploratory field Radljevo, and to the east on Tamnava - East Field. The northern boundary is natural, where the coal bed lenses out ...
... Rumbaugh, 2011). The contours of the modeled layers were determined on the basis of data collected from numerous exploration boreholes, distributed across the study area. According to the “Report on Lignite Reserves at Tamnava - West Field of the Kolubara Coal Basin as on 31 December 2009” (Kitanović ...
... about the spread of the aquifers in the study area, their interactions, and groundwater flow conditions. Based on geologic and hydrogeologic exploration, and analysis and synthesis of the collected data, the paper describes hydrogeologic modeling of the open-cast mine Tamnava – West Field. The software ...Jelena Ratković, Dušan Polomčić, Dragoljub Bajić, Bojan Hajdin. "A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)" in Underground Mining Engineering no. 29, Belgrade : University of Belgrade - Faculty of mining and geology (2016): 43-54
-
‘Blue-’ and ‘Brown-speckled’ pottery from Qalhât, the Sultanate of Oman (13–16th centuries): Comparison with traditional Omani 19–20 century productions
Representative ‘Blue speckled’ (13–16th centuries) and ‘Brown speckled’ (13–21st century) wares recovered from the excavations in Qalhât or collected around Bahlâ city (Sultanate of Oman) were characterized by XRPD, SEM-EDS, Raman/optical microspectroscopy, and thermal expansion. Minerals present in the body (quartz, augite and albite as major phases, calcite, dolomite, rutile, anatase, phosphate, hematite and magnetite as minor phases) were identified by XRPD and/or Raman spectroscopy. SEM-EDXS microanalysis was performed on the glazes in order to compare their composition, especially ...Liliana Gianni, Hélène Renel, Aleksandar Kremenović, Philippe Colomban. "‘Blue-’ and ‘Brown-speckled’ pottery from Qalhât, the Sultanate of Oman (13–16th centuries): Comparison with traditional Omani 19–20 century productions" in Boletín de la Sociedad Española de Cerámica y Vidrio, Elsevier BV (2020). https://doi.org/10.1016/j.bsecv.2020.06.005
-
New data on the age of an Upper Cretaceous clastic-carbonate succession in Brežđe (Western Serbia)
Nevenka Đerić, Nataša Gerzina (2014)... на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs New data on the age ofan Upper [a(f:\č; ...
... modifted geological map of the wider surroundings of the investigated area, based on the Geological Map of SFR Yugoslavia 1:500 000 (SAVEZNI GEOLOŠKI ZAVOD, 1970); VZWB – Vardar Zone Western Belt, JB – Jadar Block, DIE – Drina-Ivanjica Element Đerić and Gerzina: New data on the age of an Upper Cretaceous ...
... limestone, clayey limestonc and maristone (the so-called Struganik Limestone). Chert con- cretions are present throughout the sequence. Based on the identified radiolarian association, the Lower Senonian age of grayish clay intercalations in limestone of the Struganik quarry was determined by DJERIĆ ...Nevenka Đerić, Nataša Gerzina. "New data on the age of an Upper Cretaceous clastic-carbonate succession in Brežđe (Western Serbia)" in Geologia Croatica (2014)
-
Clockwise vertical-axis rotation in the West Vardar zone of Serbia: Tectonic implications
The Vardar-Tethyan mega-suture between the Eurasian and Adria (Gondwana) margins comprises remnants of oceanic lithosphere of Neotethys and distal parts of the adjacent continental margins including unconformable Late Cretaceous sedimentary cover and Cenozoic igneous rocks of post-obduction age. This study provides kinematic constraints for displacements and rotations affecting the Serbian part of the West Vardar and Jadar-Kopaonik units after the closure of the Neotethyan (= Sava) Ocean. The targets of the paleomagnetic research were Late Cretaceous sediments representing an ...... referred to in the text and in Tables 1 and 2 200 V. Lesić et al. vertical-axis rotations, as can be suspected by looking at the non-linear shape of the Sava suture, especially in the area north of Belgrade (Fig. 1). 2 Geological background The Serbian part of the Vardar–Tethyan mega-suture ...
... immediately west of the Sava suture (Fig. 1). The sampled Upper Cretaceous lithologies formed during the closure of the Sava Ocean, while the formation of the Cenozoic lithologies post-dated collision between Adria and Europe (Cvetković et al. 2016a). The older substratum on which the Cretaceous and ...
... colours on the surface, with the continuation of colour variation down- ward in the bed. We drilled the concentric features of varying colours and, as we shall see later, the analysis of their natural remanent magnetization provided a key to the correct interpretation of the relative ages of the remanence ...Vesna Lesić, Emo Márton, Violeta Gajić, Dragana Jovanović, Vesna Cvetkov. "Clockwise vertical-axis rotation in the West Vardar zone of Serbia: Tectonic implications" in Swiss Journal of Geosciences, Basel : Springer International Publishing (2018). https://doi.org/10.1007/s00015-018-0321-8
-
Geoenvironmental Investigations at a Smelter Location in Bor (Serbia)
Petar Papić, Zvonimir Milijić, Jana Stojković, Jovana Milosavljević, Maja Todorović, Marina Ćuk, Željko Kamberović (2014)Petar Papić, Zvonimir Milijić, Jana Stojković, Jovana Milosavljević, Maja Todorović, Marina Ćuk, Željko Kamberović. "Geoenvironmental Investigations at a Smelter Location in Bor (Serbia)" in Challenges : Sustainable Land Management – Climate Change, Advances in Geoecology 43, Catena Verlag GMBH (2014)
-
The subthermal potential of karstic groundwater of Kučaj–Beljanica region in Serbia estimated by the multivariate analysis
Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeLjiljana Vasić, Dragana Ž. Živojinovic, Vladana Rajaković-Ognjanović, Huang Fen, Cao Jianhua. "The subthermal potential of karstic groundwater of Kučaj–Beljanica region in Serbia estimated by the multivariate analysis" in Environmental Earth Sciences, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s12665-021-09392-1
-
Study of the Synergetic Effect of Co-Pyrolysis of Lignite and High-Density Polyethylene Aiming to Improve Utilization of Low-Rank Coal
Ivan Kojić, Achim Bechtel, Nikoleta Aleksić, Dragana Životić, Snežana Trifunović, Gordana Gajica, Ksenija Stojanović (2021)... mode (1:5). The injection volume was 1 µL. GC–MS analysis was carried out in the scan mode. The mass spectrometer was operated in the electron ionization (EI) mode over a scan range from m/z 45 to m/z 550. The individual peaks were identified based on the mass spectra. The quantification of the compounds ...
... positive impact on the yield and quality of the obtained products. In previous studies, the synergetic effect (increase of experimental yield in relation to theoretical yield) during coal and plastics co-pyrolysis was mainly monitored by the thermogravimetric analysis [37,38] or, on the other hand, in ...
... of 25 The experimental values of Rock-Eval parameters (S1, S2, and HI, which indicate hydrocarbon generation potential) of the lignite/HDPE mixture are higher than the theo- retical values, (lignite + HDPE)/2, for initial non-heated substrates. On the other hand, the experimental values of the mentioned ...Ivan Kojić, Achim Bechtel, Nikoleta Aleksić, Dragana Životić, Snežana Trifunović, Gordana Gajica, Ksenija Stojanović. "Study of the Synergetic Effect of Co-Pyrolysis of Lignite and High-Density Polyethylene Aiming to Improve Utilization of Low-Rank Coal" in Polymers, MDPI AG (2021). https://doi.org/10.3390/polym13050759
-
The Effect of Groundwater on the Mining Mechanization at the Open Pit Mine Coal Drmno in Serbia
Milanović Radomir, Polomčić Dušan, Dimitrijević Bojan, Pešić Miodrag. "The Effect of Groundwater on the Mining Mechanization at the Open Pit Mine Coal Drmno in Serbia" in XІІI National conference with international participati on of the open and underwater mining of minerals, Varna, Bulgaria: (2015)
-
The State and Perspective of Belgrade District Heating System Development
Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Fethi Silajdžić, Samra Arnaut, Goran Đelić (2019)District heating (DH) system in Belgrade provides energy for heating of more than 21 million m2 in households (app. 50% of all households), public, commercial and industry sectors. Public Utility Company “Beogradske elektrane” is responsible for all segments of the DH system operation. The system is fueled mostly by natural gas. The share of renewables is negligible. The research analyzes effects of implementation of two main projects proposed in the Development Strategy of the PUC - the introduction of ...... efficiency measures, measurement of delivered heat, and payment based on the measured value, etc.) Although obtained results show different levels of reduction in energy consumption and emission, the production of heat energy remains based on combustion processes. Therefore, some other, non-combustible ...
... responsible for all segments of the DH system operation. The system is fueled mostly by natural gas. The share of renewables is negligible. The research analyzes effects of implementation of two main projects proposed in the Development Strategy of the PUC - the introduction of heat energy produced ...
... Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs Dejan Ivezić ...Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Fethi Silajdžić, Samra Arnaut, Goran Đelić . "The State and Perspective of Belgrade District Heating System Development" in 5th International Conference on Smart Energy Systems, Copenhagen : Aalborg Universitet (2019)
-
Arsenic in tape waters of the south Pannonian basin (Serbia) and arsenic risk assessment
Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)... µg/L) [19]. However, the actual number of the people in Vojvodina exposed to As may be lower due to the use of bottled drink- ing water and/or the use of private or community shallow wells, which are assumed to be As free. On the other hand, the residents of some of the villages in the study area may be ...
... [31]. The non-cancerogenic and the car- cinogenic effects on individuals who consume As-rich groundwater for drinking were computed using the health risk assessment model derived from the US Environmental Protection Agency, Intergrated Risk Information System [32-34]. Based on the results of the measurement ...
... such as skin changes, effects on the cardiovascular and respiratory sys- tems, neurological impacts, and skin and other cancers [12]. First of all, toxic arsenic compounds act on the nervous sys- tem and blood vessels, causing paralysis of the capillaries. As a result of the interruption of blood flow and ...Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić. "Arsenic in tape waters of the south Pannonian basin (Serbia) and arsenic risk assessment" in Polish Journal of Enivronmental Studies 21 no. 6, Olsztyn, Poland : Polish Journal of Enivronmental Studies (2012): 1783-1790
-
Late Triassic radiolarians from the Grivska formation, internal Dinarides, SW Serbia
Paleontology, Stratigraphy, Economic Geology, Geochemistry and Petrology, Geology, Geophysics, Geotechnical Engineering and Engineering Geology... of the Grivska Formation were interpreted as hemipelagic sedimentary rocks, deposited on the platform slope, the toe-of-slope and in the basin near to the slope by DIMI- TRIJEVIĆ & DIMITRIJEVIĆ (1991) and KovAcs et al.(2010, 2011), based on the distinguished lithofacies. The term ...
... LOMO-MBS-10, Fig. 2. Limestones oftthe Grivska Formation in the valley of Lim River near the mouth of Bistrica River (A, outcrops ofthe Triassic lime- stones on the left side of Lim River valley; B, outcrops of the Triassic limestones on the right side of Lim River valley; note intensive folding; C ...
... cherty limestones of the Grivska Fm. were de- posited on a continental slope or on a proximal oceanic bottom. They are comparable with the Potschen Formation ({type locality) in the Northern Calcareous Alps or with grey cherty limestone of Meliata unit (type locality) in the Western Carpathi- ...Nikita Bragin, Liubov Bragina, Nevenka Đerić, Nataša Gerzina-Spajić. "Late Triassic radiolarians from the Grivska formation, internal Dinarides, SW Serbia" in Geološki anali Balkanskoga poluostrva (2019). https://doi.org/10.2298/GABP1901017B