Претрага
748 items
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Geotehnički efekti razaranja komunalnog otpada različitim postupcima zbijanja
Jovana M. Janković Pantić (2022)Odlaganje otpada na komunalne deponije predstavlja osnovni način zbrinjavanja otpada u Srbiji. Kako bi se prostor za deponovanje materijala racionalno koristio potrebno ga je svakodnevno zbijati sa unapred definisanom količinom vode koja se dodaje. Dobro zbijeni komunalni otpad zauzima manju zapreminu i omogućuje sigurnije skladištenje, pa je korisno prethodno laboratorijski odrediti parametre zbijanja: maksimalnu suvu zapreminsku težinu (dmax) i optimalnu vlažnost (wopt). U Srbiji do sada nisu određivani parametri zbijanja, dok je u svetu primenjivana standardna metoda (Proktorov opit) ...Jovana M. Janković Pantić. Geotehnički efekti razaranja komunalnog otpada različitim postupcima zbijanja, Beograd : [J. Janković Pantić], 2022
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Assessments of effects of implementation of strategic plans for development of Belgrade District heating system
The district heating system (DHS) is one of the key elements of the Belgrade energy system. Overview of the current state and basic characteristics of the DHS are presented in this paper. The focus is on the planned development of DHS and on the analyses of effects of realization of measures and projects defined by strategic documents related to DHS which are adopted by city authorities (Development Strategy of DHS and Strategy of Belgrade Development). Two exploratory scenarios were ...Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Miodrag Grujić. "Assessments of effects of implementation of strategic plans for development of Belgrade District heating system" in Sustainable Cities and Society, Elsevier BV (2020). https://doi.org/10.1016/j.scs.2020.102304
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Determination of Mechanical Properties of Altered Dacite by Laboratory Methods
This paper presents a methodology for determining the uniaxial and triaxial compressive strength of heterogeneous material composed of dacite (D) and altered dacite (AD). A zone of gradual transition from altered dacite to dacite was observed in the rock mass. The mechanical properties of the rock material in that zone were determined by laboratory tests of composite samples that consisted of rock material discs. However, the functional dependence on the strength parameter alteration of the rock material (UCS, intact ...... for different participation of AD. Minerals 2021, 11, 813 12 of 19 Also, the analysis included relationships between shear and normal stresses that were constructed based on the Mohr circles of stress. This analysis determined the envelopes for all analyzed participation of altered dacite, which ...
... strength σci on the participation of altered dacite (AD%) based on the analysis of laboratory test results is shown in Figure 13. An exponential and linear function Minerals 2021, 11, 813 13 of 19 approximates the analysis results shown in the diagram (Figure 13), and the dependence σci TX—AD% ...
... assessing rock mass input parameters necessary for geotechnical stability analysis and detailed design solutions. Author Contributions: Conceptualization, V.R.; methodology, V.R. and V.Č.; validation, V.M., D.S. and N.Ž.; formal analysis, V.R. and V.Č.; investigation, V.R., V.Č., V.M., D.S. and N.Ž.; resources ...Veljko Rupar, Vladimir Čebašek, Vladimir Milisavljević, Dejan Stevanović, Nikola Živanović. "Determination of Mechanical Properties of Altered Dacite by Laboratory Methods" in Minerals, MDPI AG (2021). https://doi.org/10.3390/min11080813
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The external aggregation Newton's method for solving nonlinear equations and applications
Marija Paunović, Dejan Ćebić, Nebojša Ralević. "The external aggregation Newton's method for solving nonlinear equations and applications" in The University Thought - Publication in Natural Sciences, Centre for Evaluation in Education and Science (CEON/CEES) (2020). https://doi.org/10.5937/univtho10-24982
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Fuzzy Model for Risk Assessment of Machinery Failures
The main goal of this research was the development of an algorithm for the implementation of negative risk parameters in a synthesis model for a risk level assessment for a specific machine used in the mining industry. Fuzzy sets and fuzzy logic theory, in combination with statistical methods, were applied to analyze the time picture state of the observed machine. Fuzzy logic is presented through fuzzy proposition and a fuzzy composition module. Using these tools, the symmetric position of the ...... n and a Failure Mode and Effects Analysis (FMEA). RPN methodology is a technique for analyzing the risk associated with any potential problems identified during an FMEA. However, there is a great deal of debate among FMEA practitioners as to the correct analysis procedure, and some analyses may include ...
... Z. Criticality analysis of petrochemical assets using risk based maintenance and the fuzzy inference system. Process Saf. Environ. 2019, 121, 312–325. [CrossRef] 17. Chandima Ratnayakea, R.M.; Antosz, K. Development of a Risk Matrix and extending the risk-based maintenance analysis with fuzzy logic ...
... H.-C.; Liu, L.; Liu, N. Risk evaluation approaches in failure mode and effects analysis: A literature review. Expert Syst. Appl. 2013, 40, 828–838. [CrossRef] 23. Kahneman, D.; Tversky, A. Prospect theory: An analysis of decision under risk. In Handbook of the Fundamentals of Financial Decision Making: ...Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković. "Fuzzy Model for Risk Assessment of Machinery Failures" in Symmetry, MDPI AG (2020). https://doi.org/10.3390/sym12040525
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Increasing the Local Road Network Resilience from Natural Hazards in Municipalities in Serbia
Biljana Abolmasov, Miloš Marjanović, Ranka Stanković, Uroš Đurić, Nikola Vulović. "Increasing the Local Road Network Resilience from Natural Hazards in Municipalities in Serbia" in Progress in Landslide Research and Technology, Volume 3, Issue 1, Springer Cham. (2024). https://doi.org/https://doi.org/10.1007/978-3-031-55120-8_22
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Geologic Information System of Serbia
Geologic information system of Serbia (GeolISS) represents repository for digital archiving, query, retrieving, analysis and geologic data visualization. The GeolISS is implemented through ESRI ArcGIS technology, and is designed to operate as a personal geodatabase (MS Jet 4.0 Engine) and SDE enterprise geodatabase in MS SQL Server. The objective of GeolISS implementation is integration of existing geologic archives, data from published maps at different scales, newly acquired field data, as well as Web publishing of geologic information. Physical implementation ...... Implementation, Geodatabase. Geologic information system of Serbia (GeolISS) represents repository for digital archiving, query, retrieving, analysis and geologic data visualization. The GeolISS is implemented through ESRI ArcGIS technology, and is designed to operate as a personal geodatabase ...Branislav Blagojević, Branislav Trivić, Ranka Stanković, Nenad Banjac, Olivera Kitanović. "Geologic Information System of Serbia" in Proceedings of the 17th Meeting of the Association of European Geological Societies, 14.-18. september 2011., Beograd : Srpsko geološko društvo (2011)
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Korelacija magnetnog susceptibiliteta i sadržaja metala u flotacijskom jalovištu
Procena metala u rudama, jalovištu i zemljištu se tradicionalno određuje hemijskim metodama kao što su Rengen fluorescentna analiza (XRF), Instrumentalna neutronska aktivaciona analiza (INAA) i Masena spektrometrija induktivno spregnute plazme (ICP-MS). Neke od pomenutih metoda su veoma zahtevne i skupe, te se nametnula potreba ka traženju jeftinijeg alata za brzu procenu prisustva pojedinih metala. Tokom poslednjih nekoliko decenija, mnoge studije su pokazale da su magnetna merenja dovoljno osetljiva da detektuju magnetni signal feromagnetnih materijala, a samim tim i metala ...Filip Abramović, Vesna Cvetkov, Aco Ilić, Dragana Životić. "Korelacija magnetnog susceptibiliteta i sadržaja metala u flotacijskom jalovištu" in 18. Kongres geologa Srbije "Geologija rešava probleme", Divčibare, 01-04 jun 2022., Srpsko geološko društvo (2022)
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Evidence for Ladinian (Middle Triassic) platform progradation in the Gyulakeszi area, Tapolca Basin, Western Hungary: Microfacies Analysis and Biostratigraphy
Zsolt Robert Nagy, Nevenka Đerić, Sándor Kovács, Anna Oravecz-Scheffer, Felicitász Velledits, Olga Piros, Gabor Csillag (2014)... the study area (Nagy et al. 1999). 168 Nagy Z.R. & al. Fels6ors Basin Szenitkiraly- szabadja Platform i Microfacies Analysis Ammonite Thin-section analysis has Zonel/Subzone o M been conducted in order to characterize the microfacies of the lower (MF1) and upper unit [-i .9 ...
... (Sciliar/Schlern) along a contin- uous isochron surface (Maurer 2000). In the Dolomites, Ladinian reefs have started-up on the former Anisian structural highs, which were surrounded by the Bu- chenstein basin (Maurer 2000; Emmerich et al. 2005). "There was a strong biological control on reef evolution ...
... represents one of the very few "Triassic surface exposures in the basin. The Tapolca Ba- sin is a fault bounded Miocene basin with complex structural features (Dudko et al. 1992), which include multiple thrust faults (Litćr and Veszprćm) generated by regional compression during the Eoalpine ...Zsolt Robert Nagy, Nevenka Đerić, Sándor Kovács, Anna Oravecz-Scheffer, Felicitász Velledits, Olga Piros, Gabor Csillag. "Evidence for Ladinian (Middle Triassic) platform progradation in the Gyulakeszi area, Tapolca Basin, Western Hungary: Microfacies Analysis and Biostratigraphy" in Rivista Italiana di Paleontologia e Stratigrafia (2014)
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Tectonic evolution of the Circum-Moesian orocline of the Carpatho-Balkanides: Paleomagnetic constraints
Emő Márton, Vesna Cvetkov, Miodrag Banješević, Gábor Imre, Aleksandar Pačevski. "Tectonic evolution of the Circum-Moesian orocline of the Carpatho-Balkanides: Paleomagnetic constraints" in Journal of Geodynamics, Elsevier BV (2024). https://doi.org/10.1016/j.jog.2024.102058
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Application of VIКOR method in the selection of an optimal splution of excavation “Borska Reka” ore deposit
Sanja Bajić, Dragoljub Bajić, Branko Glušćević, Radmila Gaćina. "Application of VIКOR method in the selection of an optimal splution of excavation “Borska Reka” ore deposit" in 9th International Conference Mining and Environmental protection MEP, 24 – 27 May 2023, Sokobanja, Serbia , Belgrade : University of Belgrade-Faculty of mining and geology (2023)
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Replica of the “Great Triangle Gold Nugget” Belonging to Belgrade University Collection, Gilded or Not?
... (Oxford Instruments). The small amount of the skim was gently removed from the surface and glued onto a graphite strip, without covering. Chemical analysis was performed on unpolished pieces, using the EDS detector and the internal standards. Historic background The gold nugget was mined in ...
... number of the replica made, and the type and manner of material that was used for covering. Result and conclusion The data obtained by EDS analysis show that the gypsum model is covered with gold leaf, which was expected according to the macroscopic characteristic of the object. How many ...Alena Zdravković, Maja Milošević, Ivana Jelić. "Replica of the “Great Triangle Gold Nugget” Belonging to Belgrade University Collection, Gilded or Not?" in 8th Mineral Sciences in the Carpathians Conference, Acta Mineralogica-Petrographica, Miskolc, Hungary, Department of Mineralogy, Geochemistry and Petrology, University of Szeged, Szeged, Hungary (2021)
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Cultural Heritage and Protection of Hand-Wheeled Pottery Manufacture in Western Serbia: Characteristics of Zlakusa Pottery Based on Sem-Eds and Optical Microscopy
... was fabricated. By the size and orientation of the pores, it is evident that the pot was manufactured by the application of a mould. SEM-EDS analysis was performed on the inner parts of the walls of the investigated samples and their surface area. When samples are compared slight difference ...
... groundmass and pores have a directional appearance, consistent with previous observations, and a slightly higher amount of calcite grains. EDS analysis gives clear differences in the chemistry of the samples. Sample 1 has a higher content of most investigated elements when compared to sample ...Milošević Maja, Zdravković Alena, Đordjević Biljana, Jelić Ivana. "Cultural Heritage and Protection of Hand-Wheeled Pottery Manufacture in Western Serbia: Characteristics of Zlakusa Pottery Based on Sem-Eds and Optical Microscopy" in 8th Mineral Sciences in the Carpathians Conference, Acta Mineralogica-Petrographica, Miskolc, Hungary, Department of Mineralogy, Geochemistry and Petrology, University of Szeged, Szeged, Hungary (2021)
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On the optimality of some multi-point methods for finding multiple roots of nonlinear equation
Ralević Nebojša, Ćebić Dejan (2016)Ralević Nebojša, Ćebić Dejan. "On the optimality of some multi-point methods for finding multiple roots of nonlinear equation" in Nonlinear Analysis: Modelling and Control 21 no. 1 (2016): 121-134
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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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Landslide Umka-the first automated monitoring project in Serbia
Abolmasov Biljana, Milenković Svetozar, Jelisavac Branko, Vujanic Vladeta. "Landslide Umka-the first automated monitoring project in Serbia" in 2nd Project workshop-Monitoring and analysis for disaster mitigation of landslides, debris flow and floods, Book of Abstracts 1 no. 1, Rijeka, Croatia:University of Rijeka and JICA (2012): 77-80
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3D Terrestrail Laser scanning and GPS Technology for slope stability investigations-case studies
Abolmasov Biljana, Pejić Marko (2012)Abolmasov Biljana, Pejić Marko. "3D Terrestrail Laser scanning and GPS Technology for slope stability investigations-case studies" in 2nd Project workshop-Monitoring and analysis for disaster mitigation of landslides, debris flow and floods, Book of Abstracts 1 no. 1, Rijeka, Croatia:University of Rijeka and JICA (2012): 81-84
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Condition and behaviour diagnostics of drive groups on belt conveyors
Maneski Taško, Jovančić Predrag, Ignjatović Dragan, Milošević Mitić Vesna, Maneski Miloš. "Condition and behaviour diagnostics of drive groups on belt conveyors" in Journal of Engineering Failure Analysis 22, :Elsevier (2012): 28-37. https://doi.org/DOI: 10.1016/j.engfailanal.201
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Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of “Podbracan”
... pre-extraction and extrac- tion stage of the underground deposit mining project. Pre-extraction activity in view of mine surveying includes: - Analysis of the existing geometric base on the terrain surface, stabilization of new geodetic points and determination of their spatial coordinates; - ...
... - Detailed scanning of the open pit levels (Figure 5), which are interactive with the designed bench drifts for the purposes of geomechanical analysis of the stability; - Detailed scanning of the existing mine chambers. Figure 5 Parts of open pit benches in interaction with bench drifts The ...
... to be used for setting out. In this stage, the a priori accuracy assessment is the most important task in view of mine surveying, because this analysis de�nes the setting out method, the type of surveying instruments and their class, as well as the accuracy itself and the number of repetitions ...Aleksandar Milutinović, Aleksandar Ganić, Thamer Rayes Diyab, Rade Tokalić, Meri Ganić. "Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of “Podbracan”" in Revista Escola de Minas, School of Mines Magazine, Sao paulo, Brasil : SciELO (2015)
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Application of the VIKOR Method for Selecting the Purpose of Recultivated Terrain after the End of Coal Mining
Radmila Gaćina, Sanja Bajić, Bojan Dimitrijević, Tomislav Šubaranović, Čedomir Beljić, Dragoljub Bajić (2024)Radmila Gaćina, Sanja Bajić, Bojan Dimitrijević, Tomislav Šubaranović, Čedomir Beljić, Dragoljub Bajić. "Application of the VIKOR Method for Selecting the Purpose of Recultivated Terrain after the End of Coal Mining" in Proceedings of the Bulgarian Academy of Sciences, Bulgaria, 28. maj 2024 , Prof. Marin Drinov Publishing House of BAS (Bulgarian Academy of Sciences) (2024). https://doi.org/10.7546/CRABS.2024.07.10