Претрага
561 items
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Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling
Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeBranislav Petrović, Veljko Marinović, Zoran Stevanović. "Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling" in Environmental Earth Sciences, Springer Science and Business Media LLC (2023). https://doi.org/10.1007/s12665-023-10911-5
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Strategic Environmental Assessment and the precautionary principle in the spatial planning of wind farms – European experience in Serbia
Spatial determination planning is at an initial and very sensitive step in the development of wind farms. On one hand, it is important to maximize the potential of wind in a particular area, and on the other hand, it is important to achieve environmental protection (including the human population and natural heritage) in the same space at the same time. With this in mind, it is important to balance all the requirements that are relevant for reaching the optimal ...Boško Josimović, Aleksandar Cvjetić, Danilo Furundžić. "Strategic Environmental Assessment and the precautionary principle in the spatial planning of wind farms – European experience in Serbia" in Renewable and Sustainable Energy Reviews, Elsevier BV (2021). https://doi.org/10.1016/j.rser.2020.110459
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Hydrodynamic analysis of radial collector well ageing at Belgrade well field
The origin and effect of hydraulic resistances on the rate of ageing of radial collector wells are identified through numerical hydrodynamic analysis. The research includes hydrodynamic modeling of one such well with new laterals at Belgrade well field. The performance of the laterals is aggravated by rapid ageing. The change in the hydraulic parameters of the laterals during the first decade of operation is analyzed through simulations of the groundwater regime with realistically specified geometries and hydraulics of the ...Đorđije Božović, Dušan Polomčić, Dragoljub Bajić, Jelena Ratković. "Hydrodynamic analysis of radial collector well ageing at Belgrade well field" in Journal of Hydrology, Elsevier BV (2019). https://doi.org/10.1016/j.jhydrol.2019.124463
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Groundwater resources for drinking water supply in Serbia´s Southeast Pannonian basin
Dušan Polomčić, Bojan Hajdin, Marina Ćuk, Petar Papić, Zoran Stevanović. "Groundwater resources for drinking water supply in Serbia´s Southeast Pannonian basin" in Carpathian Journal of Earth and Environmental Sciences (2014)
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An oilfield in Libya: A new model to enhance waste water disposal
Dušan Danilović, Vesna Karović Maričić, Nori Elhaddad, Branko Leković. "An oilfield in Libya: A new model to enhance waste water disposal" in Energy & Environment (2016)
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Curcumin nanonization using an alternative small-scale production unit: selection of proper stabilizer applying basic physicochemical consideration and biological activity assessment of nanocrystals
Ines Nikolić, Jelena Antić-Stanković, Dragana Božić, Danijela Ranđelović, Bojan Marković, Dominique Jasmin Lunter, Aleksandar Kremenović, Miroslav Savić, Snežana Savić (2020)As the number of poorly soluble drugs is increasing, nanocrystals have become very interesting due to wide range of application possibilities. Curcumin was used as a model active ingredient in this work. Even though it has many proven positive effects, due to its physicochemical issues, its possibilities have not been fully exploited. The goal of this work was to select optimal conditions for a top-down method for curcumin nanosuspension production, and to perform their comprehensive characterization applying complementary methodologies: ...Ines Nikolić, Jelena Antić-Stanković, Dragana Božić, Danijela Ranđelović, Bojan Marković, Dominique Jasmin Lunter, Aleksandar Kremenović, Miroslav Savić, Snežana Savić. "Curcumin nanonization using an alternative small-scale production unit: selection of proper stabilizer applying basic physicochemical consideration and biological activity assessment of nanocrystals" in Review on advanced materials science, Walter de Gruyter GmbH (2020). https://doi.org/10.1515/rams-2020-0043
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Komparacija metoda XRF i ICP-MS na uzorcima uglja i produkata sagorevanja
Ugljevi niskog ranga – ligniti u Republici Srbiji predstavljaju glavnu energetsku sirovinu koja se koristi za proizvodnju električne energije. Rudarstvo u Srbiji doprinosi bruto dodatoj vrednosti sa 1,8% (2020; https://publikacije.stat.gov.rs/). Sagorevanjem ugljeva niskog ranga u termoelektranama generišu se velike količine elektrofilterskog pepela i pepela, koje često predstavljaju jedan od izvora zagađenja životne sredine usled sadržaja toksičnih elemenata. Dalja upotreba produkata sagorevanja zavisi od njihovog sastava i sadržaja toksičnih mikroelemenata. Svakodnevno sagorevanje lignita u termoelektranama uslovljava konstantan monitoring potencijalno toksičnih ...Branko Kostić, Dejan Prelević, Sabina Kovač, Ksenija Eraković, Dragana Životić. "Komparacija metoda XRF i ICP-MS na uzorcima uglja i produkata sagorevanja" in 18. Kongres geologa Srbije "Geologija rešava probleme", Divčibare, 01-04 jun 2022., Srpsko geološko društvo (2022)
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Production of morphological dictionaries of multi-word units using a multipurpose tool
The development of a comprehensive morphological dictionary of multi-word units for Serbian is a very demanding task, due to the complexity of Serbian morphology. Manual production of such a dictionary proved to be extremely time-consuming. In this paper we present a procedure that automatically produces dictionary lemmas for a given list of multi-word units. To accomplish this task the procedure relies on data in e-dictionaries of Serbian simple words, which are already well developed. We also offer an evaluation ...electronic dictionary, Serbian, morphology, inflection, multi-word units, noun phrases, query expansion... automatic construction of a DELAC type dictionary relies on a manually produced set of rules. The rule design strategy resulted from the aforementioned expert analysis of available MWU lemmas. The task of the rule based procedure is to automatically generate the complete MWU lemma. However, the strategy ...
... other languages featuring complex morphological structures. After realizing that the development of such a dictionary manually is an extremely slow process, we endeavored towards a procedure aimed at automated production of MWU dictionary lemmas, which is also outlined in this paper. The procedure was ...
... nominative case form. Consequently, it can be deduced that only the basic structure adjective/noun applies here. Of course, not all MWUs are so easy to process. For in- stance, for the MWU vojna tajna ‘military secret’ a dictionary look-up offers the following possibilities: vojna vojni ‘military’ A nom ...Ranka Stanković, Ivan Obradović, Cvetana Krstev, Duško Vitas. "Production of morphological dictionaries of multi-word units using a multipurpose tool" in Proceedings of the Computational Linguistics-Applications Conference, October 2011, Jachranka, Poland, Jachranka, Poland : PTI - Polish Information Processing Society (2011)
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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... 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 ...
... very mobile and can cause a number of problems in the environment. Slag is a mineral mixture that consists of ma- terial melted in the combustion process and other parts of non- combustible material. It falls through the latticed stokehole and is rapidly cooled and extinguished in water. The fly ash ...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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Adsorption and degradation of some psychiatric drugs by sol-gel synthesized titania-based photocatalysts: influence of tungsten and sodium content
Nina L. Finčur, Maja J. Šćepanović, Mirjana Grujić-Brojčin, Biljana F. Abramović, Jugoslav B. Krstić, Aleksandar Kremenović, Tatjana Srećković, Aleksandar Golubović (2019)Mesoporous anatase nanopowders were doped with 0.05−0.5 mol% of W6, in order to obtain more efficient photocatalyst than TiO2 Degussa P25 in the degradation of amitriptyline (AMI) under simulated solar irradiation (SSI). Dominant XRPD peaks were ascribed to anatase phase, with additional peaks which could correspond to brookite, TiO2 bronze and sodium titanate, Na2Ti9O19. The Raman scattering measurements have confirmed anatase as dominant phase, with broad Raman feature at ~270 cm−1 possibly related to Ti–O–Na stretching vibration. All W-doped ...Sol-gel synthesis, Doped titania nanopowders, XRPD, Raman spectroscopy, Adsorption and photocatalytic degradation, Psychiatric drugsNina L. Finčur, Maja J. Šćepanović, Mirjana Grujić-Brojčin, Biljana F. Abramović, Jugoslav B. Krstić, Aleksandar Kremenović, Tatjana Srećković, Aleksandar Golubović. "Adsorption and degradation of some psychiatric drugs by sol-gel synthesized titania-based photocatalysts: influence of tungsten and sodium content" in Journal of Sol-Gel Science and Technology, Springer Science and Business Media LLC (2019). https://doi.org/10.1007/s10971-019-04925-4
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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 ...... However, Selanačka river had a significant influence on process which was not considered in the simulation models. It can be supposed that taking into account influence of the river will give complete insight in behavior of the process. 6 ACKNOWLDEGEMENTS The research results would not had ...
... 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 ...
... ic and the frictional type. In this paper a real case study of Selanac debris flow in Serbia is presented, focusing particularly on the, the process of debris flowing from initiation zone to main deposition area, modeled via SPH. Validation of results was made by comparing against the field ...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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Industrial Waste Heat Potential for Meeting Heat Demand in the Republic of Serbia
Dejan Ivezić, Marija Živković (2023)Finalna potrošnja energije u industrijskom sektoru čini skoro 25% finalne potrošnje energije u Republici Srbiji. Procenjuje se da je 50-70% potrošnje energije u industriji namenjeno proizvodnji toplotne energije u različitim industrijskim procesima. Deo proizvedene toplotne energije se nepovratno gubi kao energija odvedena u okolinu: prenosom toplote kroz zidove procesne opreme, dimnim gasovim, otpadnim vodama itd. Korišćenjem otpadne toplote povećava se efikasnost korišćenja primarne energije i smanjuje ukupna potreba za energijom. Otpadna toplota se može koristiti u samom industrijskom objektu ...Dejan Ivezić, Marija Živković. "Industrial Waste Heat Potential for Meeting Heat Demand in the Republic of Serbia" in Energija, ekonomija, ekologija (2023). https://doi.org/10.46793/EEE23-1.17I
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Implemented Stage Fracturing Technique To Improve Oil Production In Nubian Sandstone Of North Gialo, Libya
Fandi Emad I. M., Leković Branko, Gazal Badees, Elhaddad Elnori, Al Saghr Abdulbaset. "Implemented Stage Fracturing Technique To Improve Oil Production In Nubian Sandstone Of North Gialo, Libya" in Acta Montanistica Slovaca 23 no. 3, Košice:Faculty of Mining, Ecology, Process Control and Geotechnologies (FBERG), Technical University of Kosice (2018): 245-259
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Implemented Stage Fracturing Technique To Improve Oil Production In Nubian Sandstone Of North Gialo, Libya
Fandi Emad I. M., Leković Branko, Gazal Badees, Elhaddad Elnori, Al Saghr Abdulbaset. "Implemented Stage Fracturing Technique To Improve Oil Production In Nubian Sandstone Of North Gialo, Libya" in Acta Montanistica Slovaca 23 no. 3, Košice:Faculty of Mining, Ecology, Process Control and Geotechnologies (FBERG), Technical University of Kosice (2018): 245-259
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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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Freeze-dried nanocrystal dispersion of novel deuterated pyrazoloquinolinone ligand (DK-I-56-1): Process parameters and lyoprotectant selection through the stability study
Jelena R. Mitrović, Maja Bjelošević Žiberna, Aleksandar Vukadinović, Daniel E. Knutson, Dishary Sharmin, Aleksandar Kremenović, Pegi Ahlin Grabnar, Odon Planinšek, Dominique Lunter, James M. Cook, Miroslav M. Savić, Snežana D. Savić (2023)Recently, nanocrystal dispersions have been considered as a promising formulation strategy to improve the bioavailability of the deuterated pyrazoloquinolinone ligand DK-I-56-1 (7‑methoxy-2-(4‑methoxy-d3-phenyl)-2,5-dihydro-3H-pyrazolo[4,3-c]quinolin-3-one). In the current study, the freeze-drying process (formulation and process parameters) was investigated to improve the storage stability of the previously developed formulation. Different combinations of lyoprotectant (sucrose or trehalose) and bulking agent (mannitol) were varied while formulations were freeze-dried under two conditions (primary drying at -10 or -45 °C). The obtained lyophilizates were characterized in terms ...... (7-methoxy-2-(4-methoxy-d3-phenyl)- Nanocry“?ls 2,5-dihydro-3H-pyrazolo[4,3-c]quinolin-3-one). In the current study, the freeze-drying process (formulation and Š:ŽŽŽŽng process parameters) was investigated to improve the storage stability of the previously developed formulation. Trehalose Different combinations ...
... (2023) 106557 For samples lyophilized by the process with primary drying at -45 "C, the RDI values obtained were generally lower but constant over a longer period of time. This suggested that changes had occurred during the freeze-drying process, while the rigid structure of the cakes prevented ...
... s: how to overcome colloidal instability by formulation and process optimization. Eur. J. Pharm. Biopharm. 165, 345–360. https://doi.org/10.1016/j.ejpb.2021.05.024. 'Trenkenschuh, E., Savšek, U., Friess, W., 2021. Formulation, process, and storage strategies for lyophilizates of lipophilic nano ...Jelena R. Mitrović, Maja Bjelošević Žiberna, Aleksandar Vukadinović, Daniel E. Knutson, Dishary Sharmin, Aleksandar Kremenović, Pegi Ahlin Grabnar, Odon Planinšek, Dominique Lunter, James M. Cook, Miroslav M. Savić, Snežana D. Savić. "Freeze-dried nanocrystal dispersion of novel deuterated pyrazoloquinolinone ligand (DK-I-56-1): Process parameters and lyoprotectant selection through the stability study" in European Journal of Pharmaceutical Sciences, Elsevier BV (2023). https://doi.org/10.1016/j.ejps.2023.106557
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Evidence for Badenian marine transgression in Belgrade (Serbia)
Filip Anđelković, Dejan Radivojević (2019)... J. 1997.Badenian cycles in Serbia. Geološki anali Balkanskog poluostrva, 61-2, 1-13 Anđelković, F., Radivojević, D. 2018. A contribution to the knowledge of facial diversity of Badenian sediments in the Belgrade area, 17th Serbian Geological Congress, Vrnjačka Banja, 232-236 Marović, M., Toljić, M ...Filip Anđelković, Dejan Radivojević. "Evidence for Badenian marine transgression in Belgrade (Serbia)" in AAPG Vienna, Paratethys petroleum systems between Central Europe and the Caspian Region, Vienna, 26-27 mart, 2019, AAPG (2019)
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Maximizing the net present value by applying an optimal cut-off grade for long-term planning of the copper open pits
Kržanović Daniel, Kolonja Božo, Stevanović Dejan. "Maximizing the net present value by applying an optimal cut-off grade for long-term planning of the copper open pits" in Acta Montanistica Slovaca 20 no. 1, Kosice:Faculty of Mining, Ecology, Process Control and Geotechnologies (FBERG), Technical University of Kosice (2015): 49-61
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Development and Validation of Universal 3D Blast Fragmentation Model
Fluid Flow and Transfer Processes, Computer Science Applications,Process Chemistry and Technology, General Engineering, Instrumentation, General Materials ScienceVeljko Lapčević, Slavko Torbica, Miloš Stojanović, Ivica Vojinović. "Development and Validation of Universal 3D Blast Fragmentation Model" in Applied Sciences, MDPI AG (2023). https://doi.org/10.3390/app13148316
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Стратешко планирање функционалности подземних просторија моделом прогнозе деформација
Лука Црногорац (2023)Релативно велике деформације подградне конструкције у подземним рудницима угља у Републици Србији представљају један од главних проблема за постизање планиране производње угља. Деформације подграде су директна последица статичких и динамичких оптерећења стенске масе и у многоме зависе и од времена трајања изложености подграде утицају подземног притиска. Код ниско механизованог радног процеса долази до повећаног излагања подземних просторија утицају подземног притиска услед дугог производног циклуса који је често пропраћен застојима у раду. Веома често подземне просторије се санирају и по ...Лука Црногорац. Стратешко планирање функционалности подземних просторија моделом прогнозе деформација, Београд : [Л. Црногорац], 2023