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2836 items

  • Numerical modeling of Selanac debris flow propagation using SPH code

    Jelka Krušić, Biljana Abolmasov, Miloš Marjanović, Manuel Pastor, Saeid M. Tayyebi (2021)
    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 ...
    debris flow, modelling, SPH code, DEM
    ... landslide aWAREness” (BEWARE) funded by the People of Japan and the UNDP Office in Serbia (grant No 00094641). All activities are also a part of the Project TR36009 funded by the Ministry of Education, Science and Technological Development of the Republic of Serbia. 7 REFERENCES Chen, C. and Ling, ...
    ... and maintained by the Innovation and Development Committee of 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 ...
    ... discussed by Pastor et al. (2009) considering: A. balance of mass of the mixture—propagating along the slope and increasing due to bed entrainment—combined to the balance of linear momentum of pore water, B. the balance of linear momentum of the mixture, C. a kinetic relation between the defor ...

  • Mineralogical analysis of a clay body from Zlakusa, Serbia, used in the manufacture of traditional pottery

    Maja Milošević, Biljana Đorđević, Mihovil Logar (2020)
    калцит, сирова глина, традиционална керамика, Злакуса
    ... located on the slopes of Drežnik Hill, along the right-hand bank of Djetinja River, western Serbia. It belongs to the district of Zlatibor in the territory of the municipality Užice, and it is ~14 km away from the city of Užice (Serbia). The raw clay deposit is located in the village of Vranjani (Dobrodo ...
    ... extraction of calcite is achieved when the overbur- den of soil is removed. Calcite, once it is destroyed by blasting, is then easily removed from the bed due to its physical properties. Preparation of the clay body According to Djordjević (2013), after mixing of all of the types of raw clays ...
    ... Based on the abundance of the minerals present and their association, there is a wide variety of properties that promote the application of the CIMx in the manufacture of ceramic pro- ducts (Christidis, ; Abdelmalek et al, ). The XRPD traces of the oriented clay fractions of the investigated samples ...

  • 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 ...
    енергeтика, емисије, СО2, угаљ, електране
    ... was generated using solar and wind energy than coal. The idea of using the cleanest technologies has completely changed the direction of energy development in the EU [1]. The largest coal producing countries in 2021 on the territory of Europe are Germany, Poland and Serbia, but without Turkey. So ...
    ... change, Conference of the Parties, Twenty-first session, Paris, 30 November to 11 December 2015. International Energy Agency - Report: KElectricity and Heat. Available online: https://countryeconomy.com/ Jovančić P, Tanasijević M, Ivezić D, 2011. Serbian energy development based on lignite ...
    ... bg.ac.rs ! University of Belgrade, Faculty of Mining and Geology, Belgrade, SERBIA, E-mail: predrag.jovancicOrgf.bg.ac.rs ! University of Belgrade, Faculty of Mining and Geology, Belgrade, SERBIA, E-mail: stevan.djenadic(orrgf.bg.ac.rs ! University of Belgrade, Faculty of Mining and Geology, Belgrade ...

  • Simulation of Hydrogeological Environmental Discharge in Case of Interruption Constant Observations

    Marina Čokorilo Ilić, Dragoljub Bajić, Miroslav Popović (2024)
    Monitoring Network, data, hydrogeological environment, tunnel, simulation

  • Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species

    Biljana P Dojčinović, Boštjan Jančar, Lotfi Bessais, Aleksandar Kremenović, Nataša P Jović-Jovičić, Predrag T Banković, Dalibor M Stanković, Miloš Ognjanović, Bratislav V Antić (2019)
    Herein we report effects of partial substitution of Fe3+ by Y3+ in magnetite (Fe3O4) on morphology and inorganic arsenic species adsorption efficiency of the Fe3−xYxO4 nanoparticles formed. The series of Fe3−xYxO4 (x=0.00, 0.042 and 0.084, labeled as Y00, Y05 and Y10, respectively) was synthesized using co-precipitation followed by microwave-hydrothermal treatment (MW) at 200°C. With increase of yttrium content(xvalue), both the morphological inhomogeneity of the samples and the fraction of spinel nanorods as compared to spinel pseudospherical particles increased. By ...
    microstructure, microwave-hydrothermal synthesis, adsorption, magnetic nanoparticles, arsenic

  • Analysis and visualization of geophysical well-logging data from closely spaced boreholes

    Branislav Sretković, Ivana Vasiljević, Dimitry Sidorov - Biryukov (2024)
    Geophysical logging measurements for determining the condition of the rock mass on the dam profile and locating the predisposed directions of water circulation and loss from the reservoir were conducted in four boreholes distributed at a close distance. The survey was carried out in a typical karst terrain, which is an additional challenge for defining the geological model, especially in terms of water retention. That kind of data set provides an excellent opportunity for a new approach to analysis ...
    well-logging in karst, water loss, data correlation, data fusion
    ... science, technological development and innovation of the Republic of Serbia, based on contract no. 451-03-65/2024-03/200126. 102 REFERENCES Hussain Y., Uagoda, R.; Borges, W.; Nunes, J.; Hamza, O.; Condori, C.; Aslam, K.; Dou, J.; Cardenas-Soto M, 2020: The Potential Use of Geophysical Methods ...
    ... they are the essence of the problem of water loss from the reservoir, and their detection and determination of their character in terms of predisposition to water circulation is a key task of geophysical surveys. METHODS OF INVESTIGATION Analyzed data set consisted of four logs: spontaneous ...
    ... correlation of the logs represent the possibility of improving the results of the borehole measurements and their visualization in 2D position. IIlerru KogHrpec Ha I econosaare Ha PenyOnka CeBepHa MakcJuoHuja Fifth Congress of Geologists of the Republic of North Macedonia The application of such ...

  • Contribution to the geotechnical classification of municipal waste landfills in Serbia

    Dragoslav Rakić, Irena Basarić, Laslo Čaki, Slobodan Ćorić (2018)
    Management, Monitoring, Policy and Law, Nature and Landscape Conservation, Geochemistry and Petrology, Waste Management and Disposal,Geotechnical Engineering and Engineering Geology,Water Science and Technology,Environmental Chemistry,Environmental Engineering

  • Tracking of the temporal dependency of fading of the human footprint temperature contrast

    Stevan Đenadić, Ljubiša Tomić, Vesna Damnjanović, Darko Vasiljević, Danica Pavlović (2021)
    In certain situations, it is extremely important to determine the exact time “someone” entered or crossed the forbidden zone of a military or strategic installation, a red zone of radioactive, chemical, or biological contamination, a bank or similar structure. Standard security measures include ordinary video surveillance using cameras that operate in the visible range of the electromagnetic spectrum, as well commercial thermal imaging cameras [1, 2]. The paper presents the results of experiments that suggest another possible use of ...

  • Threshold-induced correlations in the Random Field Ising Model

    Sanja Janićević, Dragutin Jovković, Lasse Laurson, Đorđe Spasojević (2018)
    Multidisciplinary
    ... supported by the Serbian Ministry of Education, Science and Technological Development under Project No. 171027. �is research has also been supported by the Academy of Finland through an Academy Research Fellowship (L.L., project no. 268302) and through the Centres of Excellence Program (project no. ...
    ... response signal is random. 1Faculty of Physics, University of Belgrade, POB 368, 11001, Belgrade, Serbia. 2COMP Centre of Excellence, Department of Applied Physics, Aalto University, P.O. Box 11100, 00076, Aalto, Espoo, Finland. 3Helsinki Institute of Physics, Department of Applied Physics, Aalto University ...
    ... response signal is random. Faculty of Physics, University of Belgrade, POB 368, 11001, Belgrade, Serbia. ?COMP Centre of Excellence, Department of Applied Physics, Aalto University, P.O. Box 11100, 00076, Aalto, Espoo, Finland. *Helsinki Institute of Physics, Department of Applied Physics, Aalto University ...

  • A fuzzy-based decision support model for effectiveness evaluation - a case study of examination of bulldozers

    Miloš Tanasijević, Predrag Jovančić, Dejan Ivezić, Uglješa Bugarić, Radiša Đurić (2019)
    Effectiveness evaluation is one of the basic components of engineering asset management and maintenance engineering in general. Effectiveness is an overall concept representing a measurement of quality of service level for the analyzed engineering system. This concept contains a series of partial indicators relating to time in operation and time for maintenance activities, as well as functional properties of the system. This article describes the analysis and structuring of partial indicators, as well as the development of a model ...
    Efikasnost, Fazi zaključivanje, Prikupljanje podataka, Buldozer

  • Trans-Lithospheric Diapirism as a Possible Mechanism for Ophiolite Emplacement?

    Nikola Stanković, Taras Gerya, Vladica Cvetković, Vesna Cvetkov (2024)

  • Palaeoflora of Kamenica (Pranjani Basin, western Serbia)

    Zorica Lazarević, Ljubica Milovanović, Jelena Milivojević, Ivana Vasiljević (2019)
    Palaeofloras of the Paleogene in Serbia are relatively rare, especially in comparison with floras from Neogene sediments. Most Paleogene phytoas sociations from the territory of Serbia existed in a dry and warm climate. The youngest Paleogene phytoassociation originates from the Pranjani Basin (Western Serbia), locality Kamenica. The age of this palaeoflora is determined as Late Oligocene. This fossil plant assemblage is different from other Paleo gene phytoassociations.The palaeoflora from Kamenica is characterized with leaf imprints larger than in other ...
    макрофлора, млађи олигоцен, Прањански басен, Каменица
    ... was supported by grants from the Ministry of education, Science and Technologi- cal development of the republic of Serbia, Projects No. 176015, No. 33003 and No. 176016. References aNđeLKOvIć, j. 1989.Smerdis minutus (Blanville) from the Oligocene of Pranjani basin, western Serbia. Geološki anali ...
    ... научни рад 1 University of Belgrade – Faculty of Mining and Geology, Department of Paleontology, Kamenička 6, 11000 Belgrade, Serbia. E-mails: zorica.lazarevic@rgf.bg.ac.rs; jelena.milivojevic@rgf.bg.ac.rs 2 University of Belgrade – Faculty of Mining and Geology, Department of Geophysics, Đušina 7, 11000 ...
    ... along NW–Se faults and later ruptures of e-W and some of Ne–SW trends, controlled the formation of the Graben and its geometry. a characteristic of the Zapadna Morava Graben is the large subsidence of the Ottnangian-Karpatian, probably superposed upon similar movements of the Oligocene-Miocene. The central ...

  • Effectiveness Analysis of Different Bucket-wheel Excavators

    Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Miloš Tanasijević, Filip Miletić (2021)
    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 ...
    bucket-wheel excavator, open-pit coal mine, mining, multi-criteria decision methods

  • Age and microfacies of oceanic Upper Triassic radiolarite components from the Middle Jurassic ophiolitic mélange in the Zlatibor Mountains (Inner Dinarides, Serbia) and their provenance

    Hans-Juergen Gawlick, Nevenka Đerić, Sigrid Missoni, Nikita Bragin, Milan Sudar, Divna Jovanović (2017)
    Neo-Tethys, trench-like basins, synorogenic deposition, evolving thrust belt, Triassic palaeogeography
    ... the east. Acknowledgements: Thin sections were prepared by Per Jeisecke (University of Tubingen). This research was suppor- ted by Ministry of Education, Science and Technological Development of the Republic of Serbia, Project ON-176015 (NDJ, MS, DJ). The cooperation Leoben-Belgrade was sup- ...
    ... Jenkyns H.C. & Winterer E.L. 1982: Palacoceanography of Mesozoic ribbon radiolarites. Karfh Planet. Sci. Lett. 60, 351—375. Karamata S. 2006: Thc geological development of the Balkan Peninsula related to the approach, collision and compression of Gondwana and Eurasian units. In: Robertson A.H.F ...
    ... the rough topography of the older basin fill. Geological setting The study area is located west of the Drina-Ivanjica unit in the most eastern part of the Dinaridic Ophiolite Belt south of Užice (Fig. 2a). This part of the Dinaridic Ophiolite Belt con- sists of a series of different mćlanges ...

  • Numerical Models of Debris Flows with Entrainment Analysis-Case Studies from the Republic of Serbia

    Jelka Krušić , Biljana Abolmasov, Miloš Marjanović (2021)
    The results of material entrainment analysis in RAMMS debris flow software, as well as numerical models of final flow heights for two case studies from the Republic of Serbia are presented. Both of debris flow cases started with initial sliding of huge volume block, prolonging to behave as flowing process. Results of the analysis showed that entrainment material affects final results of transportation model, runout distance, deposition area and volume of debris flow. In both cases entrainment volume is very ...
    tecišta, zadržavanje nanosa, RAMMS, validacija

  • Geochemical characterization of sediments from the archaeological site Vinča – Belo Brdo, Serbia

    Gorica Veselinović, Dragana Životić, Kristina Penezić, Milica Kašanin-Grubin, Nevenka Mijatović, Jovana Malbašić, Aleksandra Šajnović (2020)
    Earth-Surface Processes

  • The interaction of organoselenium trans-palladium(II) complexes toward small-biomolecules and CT-DNA

    Vera M. Divac, Aleksandar Mijatović, Marina D. Kostić, Jovana Bogojeski (2017)
    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 ...
    Pd(II), Selen, Substitucija, Kinetika, Mehanizam

  • Low-temperature phase transition and magnetic properties of K3YbSi2O7

    Predrag Dabić, Volker Kahlenberg, Biljana Krüger, Marko Rodić, Sabina Kovač, Jovan Blanuša, Zvonko Jagličić, Ljiljana Karanović, Václav Petříček, Aleksandar Kremenović (2021)
    alkalni silikati elemenata retkih zemalja, fazni prelazi, magnetne karakteristike, razdvajanje kristalnog polja, silikati lantanica
    ... which can be of interest concerning luminescent properties of both polymorphs. Funding information The following funding is acknowledged: Ministry of Educa- tion, Science and Technological Development of the Republic of Serbia (contract No. 451-03-09/2021-14/200126); Ministry of Education, Science ...
    ... Science and Technological Development of the Republic of Serbia & Austria Federal Ministry of Education, Science and Research (project No. 451-03-02141/2017-09/14; WTZ project No. SRB 14/2018); Slovenian Research Agency (grant No. P2-0348); Czech Science Foundation (project No. 18-10504S). References ...
    ... bInstitute of Mineralogy and Petrography, University of Innsbruck, Innrain 52, Innsbruck, A-6020, Austria, cDepartment of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovica 3, Novi Sad, 21000, Serbia, dUniversity of Belgrade, Vinca ...

  • Investigating distant effects of the Moesian promontory: Brittle tectonics along the western boundary of the Getic unit (East Serbia)

    Ana Mladenović, Milorad D. Antić, Branislav Trivić, Vladica Cvetković (2019)
    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 jedinica

  • Overcoming the Low Oral Bioavailability of Deuterated Pyrazoloquinolinone Ligand DK-I-60-3 by Nanonization: A Knowledge-Based Approach

    Jelena R. Mitrović , Branka Divović-Matović, Daniel E. Knutson, Jelena B. Ðoković, Aleksandar Kremenović, Vladimir D. Dobričić, Danijela V. Randjelović, Ivana Pantelić, James M. Cook, Miroslav M. Savić, Snežana D. Savić (2021)
    Poor water solubility of new chemical entities is considered as one of the main obstacles in drug development, as it usually leads to low bioavailability after administration. To overcome these problems, the selection of the appropriate formulation technology needs to be based on the physicochemical properties of the drug and introduced in the early stages of drug research. One example of the new potential drug substance with poor solubility is DK-I-60-3, deuterated pyrazoloquinolinone, designed for the treatment of various neuropsychiatric ...
    pyrazoloquinolinones, nanocrystals, wet media milling, fasted/fed bioavailability
    ... Technological Development, the Republic of Serbia, through a grant agreement with the University of Belgrade—Faculty of Pharmacy no: 451-03-9/2021-14/200161. Institutional Review Board Statement: The study was conducted according to the guidelines of the Declaration of Helsinki and approved by the ...
    ... chemistry and design of psychopharmaco- logical drugs led to the development of drug candidates with increased lipophilicity and high molecular weight. It is estimated that 90% of new chemical entities are poorly soluble, which is recognized as a major obstacle in drug development [1]. Because conventional ...
    ... solubility of new chemical entities is considered as one of the main obstacles in drug development, as it usually leads to low bioavailability after administration. To overcome these problems, the selection of the appropriate formulation technology needs to be based on the physicochemical properties of the ...