Претрага
469 items
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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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Definisanje parametara čvrstoće na smicanje kod izvođenja kosina u ispucalom stenskom masivu
Zoran M. Berisavljević (2016-04-01)Definisanje parametara čvrstoće na smicanje ispucalih stenskih masa predstavlja jedanod najzahtevnijih zadataka mehanike stena. Geotehnička istraživanja su uglavnomograničena na rezultate laboratorijskih ispitivanja malih makroskopski homogenihuzoraka, sa kojih se vrši ekstrapolacija rezultata na terensku razmeru. Ispitivanja semogu vršiti in situ, ali su i ona ograničena veličinom korišćene aparature imikrolokacijom na kojoj se vrše ispitivanja. Pored toga, moguće je vršiti različitaispitivanja na fizičkim modelima, koja su veoma složena i skupa. Ekstrapolacijapodataka sa malog uzorka na terensku razmeru daje mnogo bolje rezultate ...naponsko stanje, ispucalost, heterogenost, čvrstoća na smicanje, geološki indeksčvrstoće, Hoek-Brownov materijal, kompozitni uzorci, dezintegracija, povratna analizaZoran M. Berisavljević. "Definisanje parametara čvrstoće na smicanje kod izvođenja kosina u ispucalom stenskom masivu" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-04-01)
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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 ...... [7, 8, 10, 11-13]. For the assumed UCG exploitation field, fig. 5, the Pilot Plant (with thickness of the coal layer h = 6 m; p,= 1.3 t/mš) needs to be pro- cessed by gasification: 25 m 75m Figure 6. Exploitation Pilot Plant field for O, =75-50·:6·:1.3=29250tofcoal (3) UCG in Serbia ...
... for gasification, is suitable, this significantly mitigates the overall possible field subsidence or ecological disturbance. Generally, with increasing depth of subsid- ence, the subsidence on the surface of the field is bccoming less pronounced [16, 17]. A special advantage, which is related to ...
... holes. In order to achieve the most efficient use of coal resources, the borehole grid is drilled through the ground in the selected exploitation field, fig. 2. Connections between injection and production boreholes require additional ac- tivities to ensure the predicted path of the generated ...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
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Properties of fly ash and slag from the power plants
This paper describes the physical, chemical and mineral properties of ash and slag, which were taken from thermal power plants Nikola Tesla A, Nikola Tesla B, Kostolac A and Kostolac B. The knowledge of the mineralogical material composition is important because the type of minerals directly determines the properties of the fly ash and slag and their possible application. Laboratory tests showed that ash and slag samples consist of the following minerals: amorphous materials, quartz, feldspar, mullite, melilite, cristobalite, ...fly ash, slag, physical composition, chemical composition, mineral composition, X-ray diffraction method... divided into three coal fields: the Drmno field in the eastern, the Ćirikovac field in the central and the Smederevsko Podunavlje field in the western parts of the basin (Fig. 3). The Drmno and Ćirikovac fields are ex- ploited, while the Smederevsko Podunavlje field is still under pre- liminary exploration ...
... represented by outcropping and erosion of the Main coal seam. The western border of the deposit is a natural extension to the G field and the southern boundary to the E field. The eastern border is also marked by outcropping of the Main coal seam (ŽIVOTIĆ et al., 2013). Since 1896, about 883.2Mt of ...
... nava Istok”, „Tamnava Zapad”, „Radljevo”, „Zvizdar” and „Ruk- lade”; Fig. 2). Lignite is exploited in fields „C”, „D” and „Tam- nava Zapad”. The D field which is the focus of this study is situated in the eastern part of the Kolubara basin. When exploi- tation began it extended over an area of almost ...Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić. "Properties of fly ash and slag from the power plants" in Geologia Croatica, Zagreb : Croatian Geological Survey (2016). https://doi.org/10.4154/gc.2016.26
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Hazardous substances in karst aquifer waters - one of the results of the operational monitoring of groundwater in Serbia
У циљу оцене стања животне средине и разумевања потенцијалних узрока још раније евидентираног лошег хемијског статуса водног тела подземних вода „Крш–север“, извршенa je хидрогеолошка проспекција шире околине лежишта бакра Мајданпек, која је укључилаистраживање површинског копа, флотационог језера и главних карстних врела и пећина. Имајући у виду да се експлоатационо поље рудника бакра Мајданпек директно граничи са карстном издани и водним телом подземних вода „Крш–север“, параметри квалитета подземне воде су анализирани (in situ и лабораторијски) на два главна карстна врела ...Zoran Stevanović, Veljko Marinović, Branislav Petrović. "Hazardous substances in karst aquifer waters - one of the results of the operational monitoring of groundwater in Serbia" in Geoloski anali Balkanskoga poluostrva (Annales geologiques de la Peninsule balkanique), University of Belgrade, Faculty of Mining and Geology (2020). https://doi.org/10.2298/GABP201107010S
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Preparation, synthesis and characterization of nanometric Ca0.9Er0.1MnO3
Tijana B. Vlašković, Bojana Laban, Maja Milošević, Maria Čebela, Vladimir Dodevski, Milena Rosić (2023)... Sad, Serbia Programme and Book of Abstracts of The ECerS 15 Conference for Young Scientists in Ceramics (CYSC-2023) publishes abstracts from the field of ceramics, which are presented at traditional international Conference for Young Scientists in Ceramics. FEditors-in-Chief Prof. Dr. Vladimir ...
... different experimental techniques (differential thermal analysis (DTA), X-ray diffraction (KRD), Fourier transform infrared spectroscopy (FTIR), Field emission scanning eclectron microscopy (FESEM), and inductively coupled plasma (ICP)). 65 ...Tijana B. Vlašković, Bojana Laban, Maja Milošević, Maria Čebela, Vladimir Dodevski, Milena Rosić. "Preparation, synthesis and characterization of nanometric Ca0.9Er0.1MnO3" in Programme and Book of abstracts 15th ECerS Conference for Young Scientists in Ceramics, Novi Sad, Serbia October 11-14, 2023 , Novi Sad : Faculty of Technology, University of Novi Sad (2023)
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Numerical modeling of Selanac debris flow propagation using SPH code
The Selanac debris flow is a very huge event triggered after extreme rainfall caused by Cyclone Tamara activity in the Republic of Serbia in May 2014. The Selanac case study was already modelling in different programs using Voellmy rheology assumptions like RAMMS software. In this paper research are focusing particularly on the process of debris flowing from initiation zone to main deposition area using Geoflow SPH two-phase model considering frictional rheology law. Main rheological parameters are back-calculated using also ...... depths and dimension of occurrence do not allow using regular geotechnical investigations. Validation of results was made by comparing against the field investigation and high resolution Digital Terrain Model (DTM), also. Final models show accurate results comparing to the depths in deposition zone ...
... process of debris flowing from initiation zone to main deposition area, modeled via SPH. Validation of results was made by comparing against the field investigation and high resolution Digital Terrain Model (DTM). Concerning entrainment of material, which was deep in some parts of debris flow process ...
... momentum of pore water, B. the balance of linear momentum of the mixture, C. a kinetic relation between the deformation-rate tensor and velocity field, and SCG-XIII INTERNATIONAL SYMPOSIUM ON LANDSLIDES. CARTAGENA, COLOMBIA- JUNE 15th-19th-2020 D. rheological equation relating the soil-stress ...Jelka Krušić, Biljana Abolmasov, Miloš Marjanović, Manuel Pastor, Saeid M. Tayyebi . "Numerical modeling of Selanac debris flow propagation using SPH code" in SCG-XIII International Symposium on Landslides. Cartagena, Colombia- February 22-26, 2021, International Society for Soil Mechanics And Geotechnical Engineering (2021)
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Self-Engineering: Possibilities for Maintenance Operations in the Mining Machines Industry
Self-engineering is a relatively new branch of knowledge that aims to understand how systems could “autonomously” re-configure or repair themselves without the intervention of the operators. A direct field of application is within the maintenance spectrum. Having systems or machines capable of self-detecting or even self-repairing could represent a game-changer, in capital asset fields such as the mining industry in particular. This paper aims to investigate the possible benefits and challenges of self-engineering / self-maintenance concerning mining machines, specifically bucket-wheel ...self-engineering, self-maintenance, maintenance operations, mining industry, bucket-wheel excavator, gearbox revitalizationSteven Manders, Milorad Pantelić, Vladimir Milisavljević, Alberto Martinetti. "Self-Engineering: Possibilities for Maintenance Operations in the Mining Machines Industry" in SSRN Electronic Journal, Elsevier BV (2021). https://doi.org/10.2139/ssrn.3945979
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Neogene to Quaternary geology of Fruška Gora (Serbia)
Rundić Ljupko, Dulić Ivan (2011)Rundić Ljupko, Dulić Ivan. "Neogene to Quaternary geology of Fruška Gora (Serbia)" in The Field guide of Annual Meeting of Stratigraphic/Paleontological Section of Hungarian Geolog. Society, Szeged, Hungary:HGS, Budapest (2011): 48-75
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3D modeling and monitoring of karst system as a base for its evaluation and utilization: a case study from eastern Serbia
Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeSaša Milanović, Zoran Stevanović, Ljiljana Vasić, Vesna Ristić-Vakanjac. "3D modeling and monitoring of karst system as a base for its evaluation and utilization: a case study from eastern Serbia" in Environmental Earth Sciences, Springer Science and Business Media LLC (2013). https://doi.org/10.1007/s12665-013-2591-9
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Značaj geografske širine za lociranje uzročnika magnetnih anomalija kod prospekcije arheoloških lokaliteta
Vesna Cvetkov (2020)... 2002. Тhe use of geophysical tech- niques in archaeological evaluations. Technical Paper No 6, Institute of Field archaeologists. IFA paper No.6. Ed: Ali- son Taylor, Published Institute of Field Archaeologists, University of Reading: 1-24. Lahti, I., Karinen, T. 2010. Tilt deriva- tive multiscale edges ...
... savremenog MPZ, te se za po- stupak RTP koriste vrednosti preuzete iz matematičkih modela globalnog MPZ (IGRF-International Geomagnetic Refe- rence Field; WMM-World Magnetic Mo- del) za datum kada je rađena akvizicija podataka. Na malim geografskim širinama postupak RTP ne daje dobre rezultate zbog ...
... nauke 5: 83-110. Cheyney, S., Hill, I., Linford, N. 2011. Advantages to Using the Pseudogravity Transformation to Aid Edge Detection of Total Field Archaeomagnetic Data- sets. Archaeological Prospection 18 2: 81-93. Clark, A. 1990. Seeing Beneath the Soil: Prospecting Methods in Archaeology ...Vesna Cvetkov. "Značaj geografske širine za lociranje uzročnika magnetnih anomalija kod prospekcije arheoloških lokaliteta" in Aktuelna interdisciplinarana istraživanja tehnologije u arheologiji jugoistočne Evrope: Zbornik radova, Prvi skup Sekcije za arheometriju, arheotehnologiju, geoarheologiju i eksperimentalnu arheologiju Srpskog arheološkog društva, Beograd, 28.02.2020. , Beograd : Srpsko arheološko društvo (2020)
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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 ...... interpretation due to closeness to the direction of present Earth magnetic field on the sampling area. Magnetic readings for the field orientation of the cores were corrected using IGRF-12 International Geomagnetic Reference Field model (Thébault et al. 2015). The age determination was done by Milena Duncié ...
... parameters. The outliers could have been affected by moderate post-emplacement tilting, though we have no field evidence for this. Emplacement during the excursions of the Earth magnetic field cannot be excluded, either. The igneous rocks of Oligocene age from the Kopaonik Mts. area, dacitoandesites ...
... and volcanoclastic rocks confirm the latter view (Cvetković et al. 1995). 3 Paleomagnetic sampling The paleomagnetic samples were drilled in the field with a portable gasoline powered motor drill. All were oriented with a magnetic compass, the igneous samples also with a sun compass. The geographic ...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
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Application of geophysical and multispectral imagery data for predictive mapping of a complex geo-tectonic unit: a case study of the East Vardar Ophiolite Zone, North-Macedonia
... From geomagnetic data (surveys in Serbia and North Macedonia), the total intensity of the Earth's magnetic field anomaly map (Fig. 4b) was calculated. The normal magnetic field was computed using the Geomagnetic Institute'"s (Grocka) formula for the epoch 1960.0. RTP was applied to these ...
... RF and KNN algorithms. The analysis of feature importance revealed that the Bouguer gravity anomaly map, total intensity of the Earth's magnetic field reduced to the pole map, distance to fault map, band ratio BR3 map obtained from multispectral satellite images, and digital elevation model are the ...
... 7600000 7550000 Earth Science Informatics (2024) 17:1625–1644 7600000 Legend D Study area D Training area D Testing area Ophiolite Field samples Tectonic unit Serbia Bulgaria Greece North Macedonia Albania Country Borders 50 00 00 0 48 00 00 0 46 00 00 0 47 00 00 0 4 ...Filip Arnaut, Dragana Đurić, Uroš Đurić, Mileva Samardžić-Petrović, Igor Peshevski. "Application of geophysical and multispectral imagery data for predictive mapping of a complex geo-tectonic unit: a case study of the East Vardar Ophiolite Zone, North-Macedonia" in Earth Science Informatics, Springer Science and Business Media LLC (2024). https://doi.org/10.1007/s12145-024-01243-4
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Brief hydrogeology on the Dinaric karst with emphasis on the SE of the Adriatic basin
Stevanović Zoran (2014)Stevanović Zoran. "Brief hydrogeology on the Dinaric karst with emphasis on the SE of the Adriatic basin" in Field Trip Guide : Trebinje, June 2014, Belgrade:DIKTAS Project : Faculty of Miming and Geology, Department for Hydrogeology (2014): 7-17
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Development of Open Educational Resources (OER) for Natural Language Processing
In this paper we present the development of an online course at the edX BAEKTEL platform named “Lexical Recognition in the Natural Language Processing (NLP)”. It is based on the course of the same name for PhD studies at the University of Belgrade, Faculty of Philology. There are not many courses in Computational Linguistics (CL) on OER platforms, and there is none in Serbian either for CL or NLP. We have developed this course in order to improve this ...... .rs/index.php/osnivaci/?lang=en results in the field of NLP for Serbian are presented in [7]. 4 Given its interdisciplinarity, NLP is not envisaged as a study programme in the Serbian higher education system. Some courses from the field are presented to students at the Universities of ...
... answering, from detecting people's opinions about products or services to extracting appointments from your email. [2] A short overview of the field of CL/NLP is given in section 2 of this paper. In order to complement a lack of OER in Serbia we have decided to develop the OER course “Lexical ...
... started to attract attention of researchers in Serbia more than 35 years ago when Professor Duško Vitas initiated the interest in CL as a research field in Serbia, broadened its influence, and established the group of interested researchers. The first courses at University of Belgrade were introduced ...Cvetana Krstev, Biljana Lazić, Ranka Stanković, Giovanni Schiuma, Miladin Kotorčević. "Development of Open Educational Resources (OER) for Natural Language Processing" in The Sixth International Conference on e-Learning (eLearning-2015), September 2015, Belgrade, Serbia, Belgrade : Belgrade Metropolitan Univesity (2015)
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GIS Application Improvement with Multilingual Lexical and Terminological Resources
... GeolISS development, which is aimed at the integration of existing geologic archives, data from published maps on different scales, newly acquired field data, and intranet and internet publishing of geologic is given, followed by the description of the geologic multilingual vocabulary and other lexical ...
... GeolISS development, which is aimed at the integration of existing geologic archives, data from published maps on different scales, newly acquired field data, and intranet and internet publishing of geologic information. The second section introduces various lexical and terminological resources ...
... properties. Terms in the vocabularies are used to classify observations/interpretations, or to specify attribute values. Observation implements field data records and measurements, the basis for classification, interpretation and modeling of geological features. Spatial entity is treated as ...Ranka Stanković, Ivan Obradović, Olivera Kitanović. "GIS Application Improvement with Multilingual Lexical and Terminological Resources" in Proceedings of the 5th International Conference on Language Resources and Evaluation, LREC 2010, Valetta, Malta, May 2010, Valetta, Malta : European Language Resources Association (2010)
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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.... primene ove metode u oblasti rudarstva. Ključne reči: infracrvena termografija, rudarstvo, monitoring Abstract Today, there is almost no field in science and technology in which Infrared thermography is not used as a method for locating and monitoring heated objects or bodies, contactless ...
... temperature estimation and non-destructive material testing. This paper presents the possibilities and prospects of applying this method in the field of mining. Key words: infrared thermography, mining, monitoring 1. Uvod Termografija, kao oblast nauke koja se temelji na zakonima zračenja ...
... Vol. 12, pp. 875-892, 2005. [5] Tomic Lj., Kovacevic A., Damnjanovic V., Osmokrovic P., Probability density function estimation of a temperature field obtained by pulsed radiometric defectoscopy. Measurement, Vol. 46, 2263-2268, 2013. [6] Lahiri B., Bagavathiappan S., Jayakumar T., Philip J., Medical ...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)
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Analysis Of the Process Of Carbon Capture Utilization And Storage In Underground Reservoirs
John Nyame (2024)The importance of mitigating the effects of global climate change has necessitated an in-depth exploration of innovative strategies to reduce carbon dioxide (CO2) emissions. Among these strategies, Carbon Capture, Utilization, and Storage (CCUS) has emerged as a promising and transformative solution. This master thesis delves into the diverse realm of CCUS processes, aiming to unravel the positives challenges, and opportunities within this dynamic field. The analysis begins with a systematic examination of carbon capture technologies, encompassing post-combustion, pre-combustion, and oxy-fuel combustion ...... storage since the original recovery takes a lot of gas from the field and the injected CO- can aid to re-pressurize the field to its original form. Fields with water aquifer are not ideal since water might have invaded the original field hence it could increase the pressure beyond the initial pressures ...
... desired component in mixed gases dissolved by chemical and physical solvents and used mostly for precombustion and post combustion[38]. Absorption is a mature and well- established separation method that results in high capture efficiency however the energy cost incurred is very high mainly because of ...
... are not considered a likely leakage pathway for depleted field storage. Advantages of using partially or fully depleted oil and gas fields as carbon storage sites over others are the abundance of data and know-how acquired over the field cycle [81]. Computer models have been developed in the oil ...John Nyame. Analysis Of the Process Of Carbon Capture Utilization And Storage In Underground Reservoirs, 2024
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Процјена хазарда и ризика од клизишта за различите нивое просторног планирања у Републици Српској, БиХ
Цвјетко С. Сандић (2022)Територија Републике Српске је у посљедних десетак година веома угрожена активирањем нових и реактивирањем старих клизишта. Она својим дјеловањем наносе огромне материјалне штете, па и људске жртве, те је неопходно озбиљније третирање и дјеловање у борби са овим природним хазардом. Чест проблем јесте одговорност, тј. надлежност институција из ове области и недостатак у законској регулативи која готово никако или само површно обрађује област хазарда и ризика од клизишта. Усљед непостојања праксе и усвојених методологија које су у примјени у свијету, циљ ...Цвјетко С. Сандић. Процјена хазарда и ризика од клизишта за различите нивое просторног планирања у Републици Српској, БиХ, Београд : [Ц. Сандић], 2022
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Source rock investigations and organic geochemistry of a Cretaceous succession of the Outer Dinarides (Mokra Gora, Tara Mountain, SW Serbia).
Neumeister Stefan, Banjac Nenad, Bechtel A. Gawlick Hans Jurgen. "Source rock investigations and organic geochemistry of a Cretaceous succession of the Outer Dinarides (Mokra Gora, Tara Mountain, SW Serbia)." in 11th Workshop on Alpine Geological Studies & 7thEuropean Symposium on Fossil Algae, Abstracts & Field Guides, Schladming, 7. - 14. September 2013, Wien:Verlag - Geologische Bundesanstalt (2013): 71-72