Претрага
446 items
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Енергетска безбедност Европске уније у светлу актуелне енергетске транзиције
Бобан Павловић, Дејан Ивезић (2021)Енергетска стратегија Европске уније, која од 2015. године обухвата и циљеве у области климатских промена, тежи изградњи „енергетске уније” која потрошачима из ЕУ даје сигурну, приступачну, чисту и одрживу енергију. Енергетска политика ЕУ поставља пред себе амбициозне циљеве у погледу коришћења обновљивих извора – учешће од 32% до 2030. године. Овако опсежну и динамичну енергетску транзицију у Европи усложњава хетерогеност националних енергетских система у погледу структуре енергетског микса, нивоа увозне зависности, као и нивоа технолошког, друштвеног и економског ...енергетска безбедност, Европска унија, енергетски показатељи, природни гас, обновљиви извори енергије... 17. Sovacool, B. K., Brown, M. A., “Competing Dimensions of Energy Security: An International Perspective”, Annual Review of Environment and Resources, 35, 2010, pp. 77–108. 18. Baumann, F., Energy Security as multidimensional concept, Research Group on European Affairs, 2008, http://www.cap ...Бобан Павловић, Дејан Ивезић. "Енергетска безбедност Европске уније у светлу актуелне енергетске транзиције" in Безбедносни форум, Евроазијски безбедносни форум, Београд (2021)
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Simple 2D gravity–density inversion for the modeling of the basin basement: example from the Banat area, Serbia
We have developed a technique to calculate lateral density distribution of the sedimentary basin basement by combining linear gravity–density inversion and 2D forward modeling. The procedure requires gravity anomaly data, depth-to-basement data and density data for the sediments (density–depth distribution). Gravity efect of density variations in the basement was extracted from the total gravity anomaly by removing the joint efect of the sediments with vertical density variations and homogeneous basement of average density contrast (calculated by 2D modeling). Gravity ...Ivana Vasiljević, Snežana Ignjatović, Dragana Đurić. "Simple 2D gravity–density inversion for the modeling of the basin basement: example from the Banat area, Serbia" in Acta Geophysica, Springer (2019). https://doi.org/10.1007/s11600-019-00328-9
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FTIR spectroscopic study оf S-мetolachlor сorption оn inorganic and organically modified montmorillonite from Bogovina
... will also reduce their migration to groundwater. Certain experiments involved creating a stronger interaction between the mineral surface and the herbicide by making organo-mineral complexes. Montmorillonites previously modified with aromatic or aliphatic organic cations showed better sorption of certain ...
... products of S-metolachlor may possess a certain dose of toxicity similar to parent herbicides (Hladik et al., 2006). Montmorillonite is a clay mineral widely used in various industries due to its specific physical and chemical properties, such as cation exchange capacity (CEC), large surface area ...
... of 98%. A raw natural sample of bentonite was collected from the Bogovina locality (Serbia). Clay fraction, with montmorillonite as the dominant mineral, was separated using the decantation method. Clay fraction (< 2 mm) was then treated with 30% hydrogen peroxide in order to remove organic matter ...Lazar Kaluđerović, Zorica Tomić, Jelena Bogosavljević, Ljubomir Životić, Maja Milošević. "FTIR spectroscopic study оf S-мetolachlor сorption оn inorganic and organically modified montmorillonite from Bogovina" in Book of Proceedings / 3rd International and 15th National Congress Soils for Future Under Global Challenges, 21-24 September 2021 Sokobanja, Serbia , Belgrade : Serbian Society of Soil Science (2021)
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Optimizacija vodosnabdevanja podzemnim vodama u Srbiji
Dušan Polomčić, Zoran Stevanović, Petar Dokmanović, Vesna Ristić-Vakanjac, Bojan Hajdin, Saša Milanović, Dragoljub Bajić (2012)... MILANOVIC S., HAJDIN B. AND PAPIC P., 2011 Towards sustainable management of transboundary Hungarian — Serbian aquifer. In: Transboundary Water Resources Management: A Multidisciplinary Approach, 1 Ed. (eds. Ganoulis J., Aureli A. and Fried J.). Wiley-VCH Verlag. pp. 143-149 STEVANOVIC, Z. HAJDIN B ...Dušan Polomčić, Zoran Stevanović, Petar Dokmanović, Vesna Ristić-Vakanjac, Bojan Hajdin, Saša Milanović, Dragoljub Bajić. "Optimizacija vodosnabdevanja podzemnim vodama u Srbiji" in Zbornik radova XIV srpskog simpozijuma o hidrogeologiji sa međunarodnim učešćem, Zlatibor, 17-20. maj 2012. godine , Beograd : Rudarsko-geološki fakultet (2012)
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Regional Slope Stability Analysis in Landslide Hazard Assessment Context, North Macedonia Example
Miloš Marjanović, Biljana Abolmasov, Igor Peshevski, James Reeves, Irena Georgievska. "Regional Slope Stability Analysis in Landslide Hazard Assessment Context, North Macedonia Example" in Understanding and Reducing Landslide Disaster Risk, Springer International Publishing (2020). https://doi.org/10.1007/978-3-030-60227-7_29
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Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia
Dragoljub Bajić, Dušan Polomčić (2014)A groundwater control system was designed to lower the water table and allow the pumping sta-tion “Bezdan 1” to be built. Based on a hydrodynamic analysis that suggested three alternative solutions, mul-ticriteria optimization was applied to select the best alternative. The fuzzy analytic hierarchy process methodwas used, based on triangular fuzzy numbers. An assessment of the various factors that influenced the selec-tion of the best alternative, as well as fuzzy optimization calculations, yielded the “weights” of the alternativesand the ...groundwater lowering, groundwater management scenario, fuzzy analytic hierarchy process,expert knowledge, triangular fuzzy numbers, linguistic variables... Uncertainty and expert systems. Univer- sity of Bristol, Bristol, 363 pp. KARNIB, A. (2004) An approach to elaborate priority preor- ders of water resources projects based on multicriteria Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station 109 ...Dragoljub Bajić, Dušan Polomčić. "Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia" in Geološki anali Balkanskoga poluostrva, Belgrade : University of Belgrade - Faculty of mining and geology (2014). https://doi.org/10.2298/GABP1475103B
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The influence of alkyl polyglucosides (and highly ethoxylated alcohol boosters) on the phase behavior of a water/toluene/technical alkyl polyethoxylate microemulsion system
Marija Ilic, Franz-Hubert Haegel, Vesna Pavelkic, Dragan Zlatanovic, Snezana Nikolic-Mandic, Aleksandar Lolic, Zoran Nedic (2016)The influence of additives (alkyl polyglucoside, Glucopon 600 CS UP and alcohol ethoxylate C18E100) on the behavior of the water/toluene/Lutensol ON 50 (technical oxoalcohol, i-C10E5) microemulsion system as a function of temperature and composition has been investigated. The phase behavior of the microemulsions was determined by vertical sections through the Gibbs phase prism (fish-like phase diagrams). Alkyl polyglucoside shifts the one phase region to lower temperatures compared with water/toluene/Lutensol ON 50 mixtures. This is contrary to the expectation, considering ...микроемулзија, толуен, алкил полиглукозид, оксоалкохол етоксилат, појачивач ефикасности, „fish“ дијаграми... have received considerable inter- est as nonionic surfactants because of their excellent biodegradability, ease of manufacture from renewable resources, such as sugar and vegetable oil feed- stocks [13], and potential use in a large number of industrial applications [14-19]. One potential use ...Marija Ilic, Franz-Hubert Haegel, Vesna Pavelkic, Dragan Zlatanovic, Snezana Nikolic-Mandic, Aleksandar Lolic, Zoran Nedic. "The influence of alkyl polyglucosides (and highly ethoxylated alcohol boosters) on the phase behavior of a water/toluene/technical alkyl polyethoxylate microemulsion system" in Chemical Industry and Chemical Engineering Quarterly, National Library of Serbia (2016). https://doi.org/ 10.2298/CICEQ141105015I
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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 ...... system is based on the state of the machinery at the time it is observed (in this study, we did this in the context of the exploitation of mineral resources and mineral processing). The condition of the machines is examined through an analysis of existing data on the operation of the machine, including ...
... adequate risk management and for the creation of a favorable atmosphere for improving the functionality of the entire process of exploiting mineral resources. One of the most important details is that the results of fuzzy logic reasoning can indicate trends in risk management and can unambiguously ...
... The results indicated that there are numerous high-risk potential failures. These risks are influenced by low investment in human and financial resources that could reduce the number of failures or mitigate the negative effects of a failure. Such investment may be useful: the maintenance system can ...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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Review: Methodological approaches and research techniques for addressing construction and remediation problems in karst reservoirs
Saša Milanović, Ljiljana Vasić (2021)Saša Milanović, Ljiljana Vasić. "Review: Methodological approaches and research techniques for addressing construction and remediation problems in karst reservoirs" in Hydrogeology Journal, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s10040-020-02280-1
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The Importance of Detailed Groundwater Monitoring for Underground Structure in Karst (Case Study: HPP Pirot, Southeastern Serbia)
... solids—TDS) groundwater (detected at sampling point 4 + 230 m in the tunnel, EC: 5000–10,200 µS/cm) and the water transported by the tunnel, whose mineral content was much lower (Table 3). When the tunnel was in full operating mode and the pressure of the transported water seeping into the hydrogeologic ...
... karsts. Author Contributions: Conceptualization, M.Č.I. and I.J.; Methodology, M.Č.I. and I.J.; Investigation, M.Č.I., A.M., M.Ć. and I.J.; Resources, M.Č.I.; Data Curation, M.Č.I., A.M.; Writing-Original Draft Preparation, M.Č.I.; Writing-Review & Editing, M.Č.I.; Visualization, M.Č.I.; S ...Marina Čokorilo Ilić, Ana Mladenović, Marina Ćuk, Igor Jemcov. "The Importance of Detailed Groundwater Monitoring for Underground Structure in Karst (Case Study: HPP Pirot, Southeastern Serbia)" in Water, MDPI AG (2019). https://doi.org/10.3390/w11030603
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Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of “Podbracan”
... surveying tasks during the pre-project and project stage of mining, as well as during the construction of mining facilities and excavation of mineral resources. Speci�c features of the project concerning excavation of the remaining reserves of bauxite in the deposit of "Podbracan", and in this way the ...
... rgf.bg.ac.rs 323 Aleksandar Milutinovic et al. REM: R. Esc. Minas, Ouro Preto, 68(3), 323-330, jul. sep. | 2015 Abstract Mining projects for mineral resource mining contain in certain cases speci�c technical and technological solutions, these being the result of the mine’s characteristic spatial ...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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A Fuzzy Expert Model for Availability Evaluation
Each technical system within itself carries the great potential danger of possible occurrence of failure and damages. Mining machines are characteristic by great investment values, costs of unplanned shutdowns, complex working conditions, and environment and workers hazards. Systematic monitoring of the mining machinery is of great importance for the management of the mining companies. Availability is the overall concept of quality of service. Includes information regard to operating state, an idle state, a standby state and shut down. The ...... function, under given conditions and at a given moment, or during a given interval of time, and assuming the necessary supply is provided (external resources). Availability may also be expressed as the probability that the system will be available at any calendar time, that is, it will be able to operate ...Dejan Ivezić, Miloš Tanasijević, Predrag Jovančić, Radiša Đurić. "A Fuzzy Expert Model for Availability Evaluation" in Proceedings of the 2019 20th International Carpathian Control Conference (ICCC), AGH University of Science and Technology, Kraków - Wieliczka, Poland (2019)
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Using Query Expansion for Cross-Lingual Mathematical Terminology Extraction
Velislava Stoykova, Ranka Stanković (2018)Velislava Stoykova, Ranka Stanković. "Using Query Expansion for Cross-Lingual Mathematical Terminology Extraction" in Advances in Intelligent Systems and Computing, Springer International Publishing (2018). https://doi.org/10.1007/978-3-319-91189-2_16
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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)... study of the Kovin lignite deposit, Serbia. Int. J. Coal Geol. 2016, 168, 80–107. 4. Jelenković, R.; Kostić, A.; Životić, D.; Ercegovac, M. Mineral resources of Serbia. Geol. Carpath. 2008, 59, 345–361. 5. Reichl, C.; Schatz, M.; Zsak, G. World-Mining-Data. In Minerals Production; Federal Ministry of ...
... degradation is in accordance with the low content of OM (total organic carbon of 29.77% and hydrogen of 2.79%; Section 3.3), as well as a high content of mineral matter (ash content of 47.12%), which is relatively stable and not subjected to significant decomposition even at a temperature >800 ◦C. The TGA and ...
... the plastic residues morphology and prevents its melting [63]. Containing a relatively high amount of carbon (Table 3) and clay (from the lignite mineral matter [2]), the solid residues obtained by lignite/HDPE pyrolysis, in addition to direct combustion, may serve for adsorption of different pollutants ...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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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 ...... sequestered in concrete and/ or construction aggregates l CO2 is permanently Carbonates Solid mineral that naturally removes and stores CO2, e.g,„ in concrete Source: WRI. & WORLD RESOURCES IMSTITUTE Figure 3.4 Mineralization process 3.4. Chemical Conversion CO- conversion into fuels ...
... CO2 will dissolve into the saline fluid that is present in the pore spaces within the rock and mineral trapping: where dissolved CO- in the saline fluid reacts with the minerals in the rock. Mineral trapping is deemed the most secure form of CO» storage however it is a slow process and takes a ...
... Present in figure 3.3 is an enhanced oil recovery process. Figure 3.3 Enhanced oil recovery 3.3. Mineralization Mineralization of CO- results in mineral carbonates that are formed when CO- reacts with rocks rich in calcium and magnesium. Enhanced improvement in the carbonation kinetics can be achieved ...John Nyame. Analysis Of the Process Of Carbon Capture Utilization And Storage In Underground Reservoirs, 2024
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Multihazard Exposure Assessment on the Valjevo City Road Network
Miloš Marjanović, Biljana Abolmasov, Svetozar Milenković, Uroš Đurić, Jelka Krušić, Mileva Samardžić Petrović (2019)Miloš Marjanović, Biljana Abolmasov, Svetozar Milenković, Uroš Đurić, Jelka Krušić, Mileva Samardžić Petrović. "Multihazard Exposure Assessment on the Valjevo City Road Network" in Spatial Modeling in GIS and R for Earth and Environmental Sciences, Elsevier Inc (2019). https://doi.org/10.1016/B978-0-12-815226-3.00031-4.
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Development of the Availability Concept by Using Fuzzy Theory with AHP Correction, a Case Study: Bulldozers in the Open-Pit Lignite Mine
Stevan Đenadić, Dragan Ignjatović, Miloš Tanasijević, Uglješa Bugarić, Ivan Janković, Tomislav Šubaranović (2019)Availability is one of the most used terms in maintainability engineering. This concept is used to denote: The quality of service of an engineering system, i.e., machines, weak points’ analysis, asset management, as well as making decisions in the process of life cycle management. Availability is an overall indicator and contains partial indicators that are oriented towards reliability, maintenance, and logistical support. Availability presents a variable value and changes in time and space. Usually, availability is shown as the ...... the required function [1], under given conditions and at a specific moment in time, and assuming that the necessary supply is provided (external resources) [2]. Availability may also be expressed as the probability that the system will be ready for use at any (calendar) time, or that it will be in working ...
... the required function [1], under given conditions and at a specific moment in time, and assuming that the necessary supply is provided (external resources) [2]. Availability may also be expressed as the probability that the system will be ready for use at any (calendar) time, or that it will be in working ...Stevan Đenadić, Dragan Ignjatović, Miloš Tanasijević, Uglješa Bugarić, Ivan Janković, Tomislav Šubaranović. "Development of the Availability Concept by Using Fuzzy Theory with AHP Correction, a Case Study: Bulldozers in the Open-Pit Lignite Mine" in Energies, MDPI AG (2019). https://doi.org/10.3390/en12214044
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Photocatalytic Activity of the V2O5 Catalyst toward Selected Pharmaceuticals and Their Mixture: Influence of the Molecular Structure on the Efficiency of the Process
Sanja J. Armaković, Aleksandra Jovanoski Kostić, Andrijana Bilić, Maria M. Savanović, Nataša Tomić, Aleksandar Kremenović, Maja Šćepanović, Mirjana Grujić-Brojčin, Jovana Ćirković, Stevan Armaković (2023)Due to the inability of conventional wastewater treatment procedures to remove organic pharmaceutical pollutants, active pharmaceutical components remain in wastewater and even reach tap water. In terms of pharmaceutical pollutants, the scientific community focuses on -blockers due to their extensive (over)usage and moderately high solubility. In this study, the photocatalytic activity of V2O5 was investigated through the degradation of nadolol (NAD), pindolol (PIN), metoprolol (MET), and their mixture under ultraviolet (UV) irradiation in water. For the preparation of V2O5, facile ...DFT analysis, metoprolol, nadolol, nanomaterial characterization, photocatalysis, pindolol, β-blocker... n, S.J.A., A.J.K., A.B., M.M.S., N.T., A.K., MŠA., M.G.-B. and S.A.; methodology, S.J.A., Mi.andS.A.; project administration, S.J.A. and N.T.; resources, S.A.; software, S.J.A. and S.A.; supervision, S.J.A. and S.A.; validation, S.J.A., A.B., M.M.S., M.G.-B. and S.A.; visualization, S.J.A., A.J ...
... thank the Association of the International Development of Academic and Scientific Collaboration (www.aidasco.org;) for providing the computational resources necessary for the first principles calculations. Conflicts of Interest: The authors declare no conflict of interest. Sample Availability: Samples ...Sanja J. Armaković, Aleksandra Jovanoski Kostić, Andrijana Bilić, Maria M. Savanović, Nataša Tomić, Aleksandar Kremenović, Maja Šćepanović, Mirjana Grujić-Brojčin, Jovana Ćirković, Stevan Armaković. "Photocatalytic Activity of the V2O5 Catalyst toward Selected Pharmaceuticals and Their Mixture: Influence of the Molecular Structure on the Efficiency of the Process" in Molecules, MDPI AG (2023). https://doi.org/10.3390/molecules28020655
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Hydrochemical features and their controlling factors in the Kucaj-Beljanica Massif, Serbia
Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeFen Huang, Ljiljana Vasic, Xia Wu, Jianhua Cao, Saša Milanovic. "Hydrochemical features and their controlling factors in the Kucaj-Beljanica Massif, Serbia" in Environmental Earth Sciences, Springer Science and Business Media LLC (2019). https://doi.org/10.1007/s12665-019-8452-4
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Upravljanje resursima podzemnih voda severne Bačke
Bojan B. Hajdin (2013-03-07)Vodosnabdevanje gradova i naselja severne Bačke vrši se u potpunosti iskorišćavanjempodzemnih voda. Najznačajnije količine podzemne vode namenjene za piće zahvatajuse iz izdani u vodonosnim pleistocenskim naslagama koje su poznate kao osnovnivodonosni kompleks, dok su danas u vodosnabdevanju manje zastupljene vode izizdani u pliocenskim sedimentima i prve, slobodne izdani rasprostranjene plitko ispodpovršine terena.Pored snabdevanja stanovništva, veliki potrošači podzemne vode su i industrijskapreduzeća, a zbog loših uslova i nerazvijenih sistema za navodnjavanje sve veći korisnicivoda prve izdani postaju i poljoprivredni proizvođači.Geološka ...resursi podzemnih voda, vodosnabdevanje, održivo upravljanje, osnovni vodonosni kompleks, termomineralne vode, monitoring podzemnih... severne Bačke;Management of groundwater resources of northern Bačka Bojan B. Hajdin Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Upravljanje resursima podzemnih voda severne Bačke;Management of groundwater resources of northern Bačka | Bojan B. Hajdin | ...
... sustaining capacity of the resource. The status of groundwater resources, assessed on the geological, hydrogeological and related features of the area, is the basis for an aimed future strategy and management of water resources. The three status areas are investigated through concrete tasks. Water ...
... areas. Key words: groundwater resources, water supply, sustainable management, principal water-bearing complex, thermomineral water, groundwater monitoring SCIENTIFIC FIELDS: Geological engineering SPECIAL TOPICS: Management of groundwater resources and water supply UDC: 005 ...Bojan B. Hajdin. "Upravljanje resursima podzemnih voda severne Bačke" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2013-03-07)