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1778 items
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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)... homologues are more negative than in both lignite pyrolysate and HDPE pyrolysate. In lignite/HDPE pyrolysate at 500 ◦C, this Polymers 2021, 13, 759 18 of 25 effect of enrichment of normal hydrocarbons in 12C isotope (in comparison with lignite and HDPE pyrolysate) is evident in the whole range C17–C28 (Figure ...
... assistance in TGA analysis. Živojin Smiljković, MSc in Chemistry, is acknowledged for language corrections. Conflicts of Interest: The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing ...
... amount of low-rank coal in addition to thermal power plants is used in households (for cooking and heating), particularly in Serbia, India, and China [13,14]. Numerous studies were performed on lignite pyrolysis as a method for its improved utilization [15–17]. A recent strategy in bioplastics development ...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
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Maturation and isotopic changes of individual hydrocarbons in lignite lithotypes through diagenesis and early catagenesis
... extracts 67С was measured only оп С)5-С31 odd n-alkanes, whereas in the pyrolysis prođucts it was determined in the range from С17 (0 Сж, showing decreasıing trend with chain length ın all samples. п-С)5 and п-Ст have very close values in pyrolysates and lignite extracts, confitrming that ıisotopic ...
... biological molecules. Long-chain homologues exhibit slight enrichment in 7С from Pyr400 to Pyr500, whereas almost no change 15 detected in 515C ог short-chain m-alkanes. Pnstane/phytane (Pr/Ph) ratio clearly шстеазед from Pyr400 to Pyr500. In аП samples the most abunđant compound ш hopano1d distributions ...
... stable coo(S)-steranes are absent in Pyr400 which suggests фћеш formation in late di:agenesis. Стоааа(5УСхеааа(Е.) sterane ratio increases from Pyr450 to Pyr500. # should be mentioned that intensity ог observed changes ог hopane and sterane maturity ганоз decreases in the following отдег: mineral-rich ...Ivan Kojić, Achim Bechtel, Reinhard Sachsenhofer, Dragana Životić, Ksenija Stojanović. "Maturation and isotopic changes of individual hydrocarbons in lignite lithotypes through diagenesis and early catagenesis" in 29th International Meeting on Ogranic Geochemistry, 1-6 September 2019, Gothenburg, Sweden , European Association of Organic Geochemists (2019)
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The use of biological markers in determination of origin and type of organic matter in the Tisza river sediments
Snežana Štrbac, Gordana Gajica, Aleksandra Šajnović, Nebojša Vasić, Ksenija Stojanović, Branimir Jovančićević (2013)The objective of the study was to determine the origin and type of organic matter (OM) of the Tisza recent sediments along the distance of 153 km through the territory of Serbia. For this purpose group organic-geochemical parameters and biomarker compositions were used. All samples contain approximately same amount of OM, which was deposited under uniform, slightly reducing conditions. Based on the distribution of n-alkanes, the origin and type of OM could not be precisely estimated. However, n-alkane patterns ...... al. compounds with a strong resemblance in structure to their parent organic mole- cules in living organisms. In organic geochemistry, they are extensively used to estimate the origin of sedimentary organic matter (OM) and its geological evo- lution.1 In other words, based on the presence, abundance ...
... reported in biosphere and recent singenetic organic matter. The presence of singenetic immature orga- nic matter in the sediments was confirmed by the identification of isomers with the biogenic 17β(H)21β(H) configuration in all samples (Fig. 3). The values of terpane maturity ratio (Table V) are in the ...
... biomarkers in all samples had almost identical distributions (Fig. 4). The uniform distributions of the C27–C29 14α(H)17α(H)20(R) regular steranes17 (Table VI) in all samples confirmed that the organic matter in the sediments was of the same genetic type. The sterane distributions in all samples ...Snežana Štrbac, Gordana Gajica, Aleksandra Šajnović, Nebojša Vasić, Ksenija Stojanović, Branimir Jovančićević. "The use of biological markers in determination of origin and type of organic matter in the Tisza river sediments" in Journal of Serbian Chemical Society, Beograd : Srpsko hemijsko društvo (2013). https://doi.org/10.2298/JSC130614087S
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Back-arc underplating provided crustal accretion affecting topography and sedimentation in the Adria microplate
Paolo Mancinelli, Vittorio Scisciani, Cristina Pauselli, Gérard M. Stampfli, Fabio Speranza, Ivana Vasiljević (2021)Supported by evidence of deep crustal sources for the observed magnetic anomalies in Central Italy and by outcropping gabbros in the Croatian archipelago, we model the observed gravity and magnetic anomalies in the Central Adriatic Sea and surroundings. We suggest that the major magnetic anomalies in the area are related to a wide underplating and propose that this volume represents the first stage of the back-arc Adria continental breakup in Early Permian times. During the Palaeotethys-Adria collision, underplating has ...Paolo Mancinelli, Vittorio Scisciani, Cristina Pauselli, Gérard M. Stampfli, Fabio Speranza, Ivana Vasiljević. "Back-arc underplating provided crustal accretion affecting topography and sedimentation in the Adria microplate" in Marine and Petroleum Geology, Elsevier Ltd. (2021). https://doi.org/10.1016/j.marpetgeo.2021.105470
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New approach to correlation of hydrocarbon reservoirs in sandstone layers of the "Mokrin" field"
Saša Ivanišević, Dejan Radivojević (2018)геофизички каротаж, депозиционе средине, лежишта угљоводоника, миоцен, пост‐ рифтнo, секвенциона стратиграфија... Funnel shape of the GR log points to the reduction in the basin water level and the increase in the level of depositional energy, which leads to the reduction in the content of shale and increase in the content of sand in the formation. Bell shape of the GR log follows the trend o ...
... ian Basin (Radivojević, 2014). Hydrocarbons present in the sandstone layers in the area of the “Kikinda‐Mokrin” high are generated in hemipelagic marls of the Hetin Formation which is deposited in the Banatsko Aranđelovo depression. In the exploration area of the “Kikinda‐Mokrin” high, turbidite ...
... e layers in the “Mokrin” field. Inconsistencies in the selection of markers, designation and correlation of hydrocarbon reservoirs have led to incorrect assessments of oil and gas reserves and confusion in the interpretation of hydrodynamic measurements, which resulted in lower e ...Saša Ivanišević, Dejan Radivojević. "New approach to correlation of hydrocarbon reservoirs in sandstone layers of the "Mokrin" field"" in 17th Serbian Geological Congress, Vrnjačka Banja, 17-20 maj 2018, Srpsko geološko društvo (2018)
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GIS Application Improvement with Multilingual Lexical and Terminological Resources
... precision was not reduced. In general, queries often need to be ‘fine tuned’ in order to obtain an optimal balance between recall and precision. To illustrate semantic expansion, the query for geological unit retrieval with the term ‘facie’ (‘facija’ in Serbian) in their description field was ...
... GeolISS database. They are implemented in MS Visual Studio 2005 and support data entry in both personal and enterprise geodatabases. They are also implemented to work as a standalone application which handles thematic non-spatial tables in SQL Server 2000. Each type of geological spatial ...
... which is frequently a compound, is not in the morphological e-dictionary of compounds. For example, in order to determine the third inflectional transducer for kvarcna stena ‘quartz rock’, the following rule of the abovementioned procedure, imbedded in the query expansion application WS4QE ...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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The interaction of organoselenium trans-palladium(II) complexes toward small-biomolecules and CT-DNA
Serija organoselenijum trans-paladijum(II) kompleksa 1 (bis(2-(fenilselanilmetil)oksolan)dihloropaladijum(II)), 2 (bis(2-(fenilselanilmetil)oksan)dihloropaladijum(II)) i 3 (bis(2) ,2-dimetil-3-(fenilselanil)oksan)dihloropaladijum(II)) su korišćeni za ispitivanje reaktivnosti ovog specifičnog tipa kompleksa prema različitim bio-molekulima. Ovaj sistem je od posebnog interesa jer se jako malo zna o supstitucionim reakcijam organoselenijum paladijum(II) kompleksa sa trans konfiguracijom. Zamena koordinovanog hlorida sa serijom malih bio-molekula (l-Met, l-His, l-Cis, GSH i 5′-GMP) proučavana je pod uslovima pseudo-prvog reda kao funkcija koncentracije nukleofila i temperature korišćenjem tehnika zaustavljenog toka. Rezultati za proučavane komplekse ukazuju da ...Vera M. Divac, Aleksandar Mijatović, Marina D. Kostić, Jovana Bogojeski. "The interaction of organoselenium trans-palladium(II) complexes toward small-biomolecules and CT-DNA" in Inorganica Chimica Acta, Elsevier BV (2017). https://doi.org/10.1016/j.ica.2017.07.012
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Investigating distant effects of the Moesian promontory: Brittle tectonics along the western boundary of the Getic unit (East Serbia)
In this study, we report evidence for brittle deformation in a part of the Carpatho–Balkan orogen, which is explained in terms of effects of the rigid Moesian promontory of the European plate on fault kinematics in East Serbia. We focus on the westernmost part of the Getic Unit of the East Serbian Carpatho–Balkanides, i.e. the Gornjak–Ravanica Unit, located between two main thrusts that were repeatedly activated from Early Cretaceous to recent times. We combine a new data set on ...Getikum, Mezijska jedinica, Karpato-balkanski orogen, krte deformacije, Gornjačko-ravanička jedinicaAna Mladenović, Milorad D. Antić, Branislav Trivić, Vladica Cvetković. "Investigating distant effects of the Moesian promontory: Brittle tectonics along the western boundary of the Getic unit (East Serbia)" in Swiss Journal of Geosciences, Springer (2019). https://doi.org/10.1007/s00015-018-0324-5
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Mechanosynthesis and structural characterization of nanocrystalline Ce1–Y O2– (x=0.1–0.35) solid solutions
Martin Fabián, Bratislav Antić, Vladimír Girman, Milica Vučinić-Vasić, Aleksandar Kremenović, Shigeru Suzuki, Horst Hahn, Vladimír Šepelák (2015)A series of nanostructuredfluorite-type Ce1–xYxO2–δ (0rxr0.35) solid solutions, prepared via highenergy milling of the CeO2/Y2O3mixtures, are investigated by XRD, HR-TEM, EDS and Raman spectroscopy. For thefirst time, complementary information on both the long-range and short-range structural features of mechanosynthesized Ce1–xYxO2–δ, obtained by Rietveld analysis of XRD data and Raman spectroscopy, is provided. The lattice parameters of the as-prepared solid solutions decrease with increasing yttrium content. Rietveld refinements of the XRD data reveal increase in microstrains in the host ceria ...Martin Fabián, Bratislav Antić, Vladimír Girman, Milica Vučinić-Vasić, Aleksandar Kremenović, Shigeru Suzuki, Horst Hahn, Vladimír Šepelák. "Mechanosynthesis and structural characterization of nanocrystalline Ce1–Y O2– (x=0.1–0.35) solid solutions" in Journal of Solid State Chemistry, Elsevier BV (2015). https://doi.org/10.1016/j.jssc.2015.06.027
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Distribution of Uranium and Rare Elements in Radioactive Phosphate-Bearing Anomalies in Southeast Mongolia
Boris Vakanjac, Neil Rutherford, Vesna Ristić Vakanjac, Tanita Đumić, Suzana Đorđević Milošević (2020)Soviet and Mongolian geologists initiated geological exploration of Mongolia for minerals after World War II (1945). These activities lasted until the breakup of the USSR in 1991. As part of this exploration systematic uranium and rare element exploration was undertaken across Mongolia. New exploration resumed in Mongolia at the beginning of the 21st century for a range of ore and mineral deposit styles including uranium, coal, base and precious metals and Fe-ore. This was generally undertaken by Western-based companies. This ...Boris Vakanjac, Neil Rutherford, Vesna Ristić Vakanjac, Tanita Đumić, Suzana Đorđević Milošević. "Distribution of Uranium and Rare Elements in Radioactive Phosphate-Bearing Anomalies in Southeast Mongolia" in Minerals, MDPI AG (2020). https://doi.org/10.3390/min10040307
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Quantitative landslide risk assessment in the city of Tuzla
In the climate-changing conditions, geological environment interacts more dramatically with the urban fabric than before. The urbanization is expansive and more aggressive than before, but so are the weather extremes and long-term climate trends. In effect, many processes which can be triggered by either side, nature or engineering, are becoming more pervasive than before, and such is the case with landslides. Dealing and managing landslides requires few crucial steps, starting from collecting data on landslide location and typology – ...... practiced and more involved in the legislation. It allows a better insight into critical parts, allows prioritization, and hence, better planning and preparedness in the case of emergency. This paper precisely addresses such issues in a case study of the City of Tuzla in Bosnia and Herzegovina (BiH) ...
... and elements at risk inventories was undertaken using all steps indicated in the previous chapter. Figure 2. Location of the City of Tuzla in the South Europe. Figure 3. Cumulative precipitation in April-May 2014 in Tuzla. The landslide inventory was compiled using historic (pre-2014) ...
... ISSMGE. The paper was published in the proceedings of the 13th International Symposium on Landslides and was edited by Miguel Angel Cabrera, Luis Felipe Prada-Sarmiento and Juan Montero. The conference was originally scheduled to be held in Cartagena, Colombia in June 2020, but due to the SARS-CoV-2 ...Miloš Marjanović, Biljana Abolmasov, Cvjetko Sandić, Miralem Mulać, Petar Begović. "Quantitative landslide risk assessment in the city of Tuzla" 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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An Approach to Management Decision Support: The Coal Mine Pljevlja Management Information System
In this paper we describe the approach that has been used in the development of the Management Information System (MIS) in the Coal Mine Pljevlja in Montenegro. The methodology of this approach was based on new information technologies and management techniques which have already been successfully applied in other related fields. Its main goal was to introduce modern management techniques to mining, adapted to specific features of the mining industry, its operations and environment, thus enabling the tactical management ...... University of Belgrade, Serbia; 2Coal Mine Pljevlja, Montenegro ABSTRACT: In this paper we describe the approach that has been used in the development of the Management Information System (MIS) in the Coal Mine Pljevlja in Montenegro. The methodology of this approach was based on new information ...
... production process, in all the technological phases, is being carried out by regular data input, in order to make data electronically registered in real time and presented for inspection, to help production process management and periodical reporting. All production capacities in the technological ...
... views of business data. The methodology has already been applied in the development of the first phase of the Coal Mine Pljevlja MIS aimed at monitoring and management of transportation costs, in the summer of 2005. It resulted in the establishment of an efficient system of information, thus motivating ...Božo Kolonja, Ranka Stanković, Filip Vuković, Ivan Obradović. "An Approach to Management Decision Support: The Coal Mine Pljevlja Management Information System" in Proceedings of the Fifteenth International Symposium on Mine Planning and Equipment Selection, Torino, Italy, September 2006, Vol. 1,, Balkema (2006)
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History of meteorite donations to the Collection of Minerals and Rocks of the University of Belgrade, Faculty of Mining and Geology (Serbia)
... Belgrade, Faculty of Mining and Geology (UBFMG) contains 52 meteorites organized in two collections: 36 samples are stored in the Collection of Minerals and Rocks and 16 pieces are kept in the Paleontological Collection. In this paper we describe the collection of meteorites at the Collection of Minerals ...
... ly recorded throughout European and world archives and most of the exchanged samples are still kept in famous museums worldwide (e.g., Smithsonian in USA or Natural History Museum in Vienna). In 1895, the principal collection of the Mineralogical Museum of the Great School of Belgrade was divided ...
... history of meteorite collectibles in Serbia. Unfortunately, descriptions of the meteorite specimens from the Paleontological Collection inventory are missing. Early meteoritics in Serbia has been initiated after the witnessed fall of the Sokobanja meteorite in 1877. The meteorite was named after ...Alena Zdravković, Maja Milošević, Kristina Šarić, Ivana Jelić, Ana Černok. "History of meteorite donations to the Collection of Minerals and Rocks of the University of Belgrade, Faculty of Mining and Geology (Serbia)" in 9th International Conference Mineralogy and Museums, Sofia, Bulgaria, Earth and Man National Museum and Bulgarian Mineralogical Society (2021)
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The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector
Natural gas is used for the production of almost 20% of total energy today. The natural gas security of the Republic of Serbia is an urgent strategic, political and security issue. Serbia is one of the most vulnerable countries in Southeast Europe, because it only has one supply route. This study is a contribution to efforts to better understand the factors affecting energy security through the implementation of a new methodology based on the fuzzy–AHP synthesis model for measuring ...... Federation on Cooperation in the Oil and Gas Industry concluded in January 2008 and signed in October 2009 [69]. This reflected on intensive indigenous production (around 480 million in 2012). Natural gas production in the last 8 years is shown in Table 2. The main gas fields are in Vojvodina, the Serbian ...
... declined with the stabilization of oil prices in the 1980s and 1990s, it became topical again in the 2000s because of the high demand in Asia, pressure to modernize and decarbonize energy systems and problems with gas supplies in Europe [5]. The definition of energy security has changed over the years. According ...
... declined with the stabilization of oil prices in the 1980s and 1990s, it became topical again in the 2000s because of the high demand in Asia, pressure to modernize and decarbonize energy systems and problems with gas supplies in Europe [5]. The definition of energy security has changed over the years. According ...Aleksandar R. Madžarević, Dejan D. Ivezić, Miloš L. Tanasijević, Marija A. Živković. "The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector" in Symmetry, MDPI AG (2020). https://doi.org/10.3390/sym12060908
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Simple 2D Gravity-density inversion for modeling of the sedimentary basin basement
Ivana Vasiljević, Snežana Ignjatović, Dragana Đurić,. "Simple 2D Gravity-density inversion for modeling of the sedimentary basin basement" in International scientific conference Challenges in Applied Geology and Geophysics: 100th Anniversary of Applied Geology at AGH University of Science and Technology, Book of abstracts, Kraków, Poland, 10-13. Sep. 2019, Kraków, Poland : AGH University of Science and Technology (2019)
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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 ...... proposed in the Development Strategy of the PUC - the introduction of heat energy produced in Thermal power plant “Nikola Tesla A” (600 MW) and in CHP waste incineration plant in Vinča (56.5 MW). These projects are analyzed from energy and environmental aspects. Projections of fuel mix in Belgrade ...
... 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 is Professor in Energy and Sustainable Development at University of Belgrade – Faculty of Mining ...
... Mining and Geology, Head of the Center for Energy. He has more than 20 years of experience in research and involvement in Serbian energy planning and policy making. The State and Perspective of Belgrade District Heating System Development Dejan Ivezić (presenter)1, Marija Živković1, Aleksandar Madžarević1 ...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)
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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
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Concepts for Improving Machine Learning Based Landslide Assessment
Miloš Marjanović, Mileva Samardžić Petrović, Biljana Abolmasov, Uroš Đurić. "Concepts for Improving Machine Learning Based Landslide Assessment" in Natural Hazards GIS-based Spatial Modeling Using Data Mining Techniques, Advances in Natural and Technological Hazards Research, volume 48, Springer Nature Switzerland AG 2019 (2019). https://doi.org/10.1007/978-3-319-73383-8_2
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Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation
kontinentalna tektonika: kompresija, kontinentalna tektonika: ekstenzija, kontinentalna tektonika: transkurentni i transformni rasedi, pukotine, rasedi, zone snažnih deformacija, kinematika deformacija kore i omotača, teorijska mehanika, modelovanje... lead to gradients in displacements. Computation of the deformation gradient In eq. (1) we have discussed the coordinates of points of which we have tracked the change in coordinates x. For the following, we define quadrilateral elements (that in our implementation starts as squares in the undeformed ...
... itself to image 3-D velocity fields in subduction models (Strak & Schellart 2014). However, in our study we focus on 2-D deformation occurring in a horizontal plane, as our study materials are not transparant, and we use planar view images to determine deformation. In this paper we seek to infer how the ...
... vector fields in time, in our case obtained by particle image velocimetry (PIV, Thielicke & Stamhuis 2014), we want to determine the deformation field as a function of time. PIV provides the displacements in an Eulerian, space-fixed, undeformed, reference frame, which we want to express in a Lagrangian ...Taco Broerse, Nemanja Krstekanić, Cor Kasbergen, Ernst Willingshofer. "Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation" in Geophysical Journal International, Oxford University Press (OUP) (2021). https://doi.org/10.1093/gji/ggab120
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Tectono-lithostratigraphic model of the Northern Banat Miocene sediments (Pannonian Basin, Serbia)
Dejan Radivojević, Ljupko Rundić (2017)... are younger in Serbia than in neighboring Hungary (MAGYAR et al., 2013, RADIVOJEVIĆ, 2014, RADIVOJEVIĆ & RUNDIĆ, 2016). °e sedimentation of the Upper Neogene in the Pannon- ian Basin for long has been poorly understood because the lithostratigraphic units were correlated and interpreted in chronostr ...
... are younger in Serbia than in neighboring Hungary (MAGYAR et al., 2013, RADIVOJEVIC, 2014, RADIVOJEVIC & RUNDIC, 2016). The sedimentation of the Upper Neogene in the Pannon- ian Basin for long has been poorly understood because the lithostratigraphic units were correlated and interpreted in chronostratigraphic ...
... Basin lies in southeastern Europe and extends over several countries. °e area of interest represents the most attention-grabbing part of Pannonian Basin in Serbia due to its hydrocarbon potential as well as for complex geology and presence of deepest depressions. °e hydrocarbon exploration in this area ...Dejan Radivojević, Ljupko Rundić. "Tectono-lithostratigraphic model of the Northern Banat Miocene sediments (Pannonian Basin, Serbia)" in 7th International Workshop: Neogene of Central and South-Eastern Europe, Velika, Croatia, maj 2017, Croatian Geological Society (2017)