Претрага
2760 items
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The type of mechano-activator effect on mechanical activation of fly ash
Ljubiša Andrić, Zagorka Aćimović-Pavlović, Milan Petrov, Kostović Milena, Zoran Bartulović. "The type of mechano-activator effect on mechanical activation of fly ash" in Journal of Mining and Metallurgy, Section A: Mining, :University of Belgrade, Technical faculty Bor (2012)
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Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of Podbracan
Milutinovic Aleksandar, Ganic Aleksandar, Diyab Rayes Thamer, Tokalic Rade, Ganic Meri. "Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of Podbracan" in REM - Revisita Esccola des Minas 3 no. 68, Ouro Preto, Brazil:MG : Escola de Minas (2015): 323-330. https://doi.org/http://dx.doi.org/10.1590/0370
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Synergistic Effect of the Insulation Characteristics of Gas Mixtures under the Influence of Pulse Voltages
Kartalović Nenad, Stanković Koviljka, Aleksandrović Snežana, Brajović Dragan. "Synergistic Effect of the Insulation Characteristics of Gas Mixtures under the Influence of Pulse Voltages" in IEEE Transactions on Dielectrics and Electrical Insulation 23 no. 6, :IEEE-Inst Eletrctrical Electronics Engineers Inc (2017): 3311-3318. https://doi.org/10.1109/TDEI.2016.005871
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Possibility of cleaning of burning coal from surface mining
Milena Kostović, Nina Pantelić (2021)Milena Kostović, Nina Pantelić. "Possibility of cleaning of burning coal from surface mining" in Proceedings of XIV International Mineral Processing and Recycling Conference, May 12-14, 2021, Belgrade, Serbia, University of Belgrade, Technical Faculty in Bor (2021)
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The Flow Conditions in the Epikarst Zone of a Karst Aquifer. Case Study: Suva planina Mt., East Serbia
Branislav Petrović (2023)The epikarst as a part of the karst aquifer represents a complex point of contact and mixing of unconsolidated material from the terrain surface, carbonate rocks altered by “corrosive” water, flora and fauna (and remains of), which is partially saturated with groundwater. Significant amounts of (plant accessible) water, and other solutes and particles, can be stored in this zone for extended periods of time. Thus, attenuation or biochemical processes could start in this layer and change quality of infiltrated ...Branislav Petrović. "The Flow Conditions in the Epikarst Zone of a Karst Aquifer. Case Study: Suva planina Mt., East Serbia" in International Scientific Conference "Man and Karst 2022", CIRS - Centro Ibleo di Ricerche Speleo-Idrogeologiche (2023)
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Comparison of sequential and single extraction in order to estimate environmental impact of metals from fly ash
The aim of this paper is to simulate leaching of metals from fly ash in different environmental conditions using ultrasound and microwave-assisted extraction techniques. Single-agent extraction and sequential extraction pro¬cedures were used to determine the levels of different metals leaching. The concentration of metals (Al, Fe, Mn, Cd, Co, Cr, Ni, Pb, Cu, As and Be) in fly ash extracts were measured by inductively coupled plasma-atomic emission spectrometry. Single-agent extractions of metals were conducted at sonication times of 10, ...leteći pepeo uglja, ekstrakcija sa jednim agensom, sekvencijalna ekstrakcija, mikrotalasi, ultratalasiAleksandra Tasić, Ivana Sredović-Ignjatović, Ljubiša Ignjatović, Marija Ilić, Mališa Antić. "Comparison of sequential and single extraction in order to estimate environmental impact of metals from fly ash" in Journal of the Serbian Chemical Society, National Library of Serbia (2016). https://doi.org/10.2298/JSC160307038T
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Sistem poslovne inteligencije za upravljanje zaštitom na radu u rudarskoj industriji
Ljiljana R. Kolonja (2016-09-23)Postojeća organizacija zaštite na radu na površinskim kopovima uglja često nije umogućnosti da blagovremeno i tačno ukaže na nedostatke, koji mogu u bližoj ilidaljoj budućnosti da budu uzrok narušavanja bezbednosti radnika, ali i uzrokoštećenja materijalnih dobara rudnika. Nemogućnost donošenja pravovremenihodluka je moguće izbeći uvođenjem softverski podržanih sistema za praćenje ianalizu bezbednosti i zaštite na radu.Osnovni cilj ove doktorske disertacije je definisanje metodologije i razvoj modelasistema upravljanja zaštitom na radu, koji će omogućiti savremen, adekvatan isveobuhvatan način praćenja i analize ...Ljiljana R. Kolonja. "Sistem poslovne inteligencije za upravljanje zaštitom na radu u rudarskoj industriji" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-09-23)
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Application of fuzzy inference models on the example of zinc ore flotation concentration
Miljanović Igor, Vujić Slobodan, Lazić Predrag, Jovanović Ivana, Josipović Pejović Milena, Petrovski Aleksandar (2013)Miljanović Igor, Vujić Slobodan, Lazić Predrag, Jovanović Ivana, Josipović Pejović Milena, Petrovski Aleksandar. "Application of fuzzy inference models on the example of zinc ore flotation concentration" in Proceedings of the XI Balkan Conference on Operations Research BALCOR, 7-11.09.2013. - no. -, Beograd, Zlatibor, Srbija:University of Belgrade, Faculty of Organizational Sciences, Belgrade (2013): 532-537
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Analysis of crack displacements on residential structure induced by blasting and earthquake vibrations and daily changes of temperature and relative humidity.
Kričak Lazar, Negovanović Milanka, Janković Ivan, Zeković Dario, Mitrović S.. "Analysis of crack displacements on residential structure induced by blasting and earthquake vibrations and daily changes of temperature and relative humidity." in Proceedings of International Conference on Damage Mechanics-ICDM, Beograd, Srbija:Serbian Chamber of Engineers, Faculty of Civil Engineering (2012): 181-184
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Internal structure of Supragetic basement (Serbian Carpatians, eastern Serbia) and its significance for late Early Cretaceous nappe-stacking
Krstekanić Nemanja, Stojadinović Uroš, Kostić Bojan, Toljić Marinko. "Internal structure of Supragetic basement (Serbian Carpatians, eastern Serbia) and its significance for late Early Cretaceous nappe-stacking" in Geološki anali Balkanskog poluostrva 78 no. 1, Beograd:University of Belgrade-Faculty of mining and geology University of Belgrade-Faculty of mining and geology (2017): 1-15. https://doi.org/https://doi.org/10.2298/GABP1
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Application of the Fuzzy Model in the Evaluation and Selection of Hydraulic Excavators on Open-Pit Lignite Mine
Stevan Đenadić, Miloš Tanasijević, Vladimir Milisavljević, Dragan Ignjatović, Predrag Jovančić (2021)The production of lignite in large open-pit mines is mainly performed with continuously operating equipment, where bucket-wheel excavators, bucket-chain excavators, belt conveyors, and spreaders are the basic machines. Smaller machines, usually of discontinuous operating nature, are commonly categorized as auxiliary machines. This paper presents the research related to the analysis of auxiliary machine parameters with the case study for a hydraulic excavator. The purpose of the analysis was to develop a model of rating quality of service of the ...Stevan Đenadić, Miloš Tanasijević, Vladimir Milisavljević, Dragan Ignjatović, Predrag Jovančić. "Application of the Fuzzy Model in the Evaluation and Selection of Hydraulic Excavators on Open-Pit Lignite Mine" in SSRN Electronic Journal, Elsevier BV (2021). https://doi.org/10.2139/ssrn.3945617
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Specific electrical conductivity in epikarst groundwater of the eastern Suva Planina mt.
Branislav Petrović (2022)The epikarst is a part of the karst outcrop that is located within the unsaturated zone and represents a complex point of contact and mixing of unconsolidated material from the terrain surface. The correct and complete perception of epikarst, its degree of development and the presence on the limestone terrain can be achieved with a multidisciplinary approach. The study area for the applied multidisciplinary research was the Eastern part of karst massif Suva Planina Mt. One important part of ...Branislav Petrović. "Specific electrical conductivity in epikarst groundwater of the eastern Suva Planina mt." in KARST 2022: "Importance, State of the Art, and Prospective of Utilization and Protection of Resources in Karst", Serbian Academy of Sciences and Arts (SASA) (2022)
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Развој модела конструкције просторија отварања рудника са подземном експлоатацијом
Dražana M. Tošić (2016-08-26)Приликом израде подземних просторија у стјенској маси долази до нарушавања природне равнотеже напонских стања стијенског масива који су владали прије израде тих просторија, при чему долази до појаве прертасподјеле напона и његове концентрације у појединим правцима и тачкама, односно долази до појаве пластичних деформација које су праћене ломљењем стијенске масе и кретањима материјала према откопаном простору...модел, метод коначних елемената, просторија отварања, напон, дефеормација стијенског масива, алгоритам функционалних зависностиDražana M. Tošić. "Развој модела конструкције просторија отварања рудника са подземном експлоатацијом" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-08-26)
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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-blockerSanja 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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Demise of the Wetterstein Carbonate Platform and onset of the Dachstein Carbonate Platform recorded in deep-water successions of the East Bosnian-Durmitor megaunit (Pliješevina, northern Montenegro, Dinarides)
Milica Mrdak, Eva Wagerer, Milan Sudar, Nevenka Djerić, Martin Đaković, Hans-Jürgen Gawlick. "Demise of the Wetterstein Carbonate Platform and onset of the Dachstein Carbonate Platform recorded in deep-water successions of the East Bosnian-Durmitor megaunit (Pliješevina, northern Montenegro, Dinarides)" in Geologica Carpathica, Central Library of the Slovak Academy of Sciences (2024). https://doi.org/10.31577/GeolCarp.2023.26
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Validation of vulnerability assessment by means of the Time Dependent, Model: case study from the Slovenian karst catchment
Groundwater vulnerability assessment methods are continuously being developed and existing methods are very often modified to provide better simulation of natural protection conditions and more objective results. Most frequently used methods are based on calculation of predefined parameters influencing water infiltration and underground flow, which can often lead to bias conclusions related to vulnerability evaluations. Some other methods, like the Time Dependent Model (TDM) are based on an approach, where parametrization is obtained at the final stage of the ...Ocena ranjivosti podzemnih voda, karstne podzemne vode, TDM metoda, delineacija sanitarnih zona, Slovenački karstVladimir Živanović, Nataša Ravbar, Igor Jemcov. "Validation of vulnerability assessment by means of the Time Dependent, Model: case study from the Slovenian karst catchment" in Proceedings of IAH2019, the 46th Annual Congress of the International Associaton of Hydrogeologists, Málaga (Spain), September 22-27, 2019, International Association of Hydrogeologists (IAH) (2019)
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The Flow Conditions in the Epikarst Zone of a Karst Aquifer. Case Study: Suva planina Mt., East Serbia
Branislav Petrović (2022)The epikarst as a part of the karst aquifer represents a complex point of contact and mixing of unconsolidated material from the terrain surface, carbonate rocks altered by “corrosive” water, flora and fauna (and remains of), which is partially saturated with groundwater. Recharge of karst aquifers, usually, occurs via the unsaturated zone which uppermost part could be epikarst zone. Significant amounts of (plant accessible) water, and other solutes and particles, can be stored in this zone for extended periods ...Branislav Petrović. "The Flow Conditions in the Epikarst Zone of a Karst Aquifer. Case Study: Suva planina Mt., East Serbia" in International Scientific Conference - Man and Karst 2022, Custonaci, Italy, 12-16.09.2022, Gruppo Grotte Ragusa - C.I.R.S. (2022)
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The influence of Al<sup>3+</sup>ion on porcine pepsin activity<i>in vitro</i>
The in vitro effect of Al3þ ions in the concentration range 1.7·1026M–8.7·1023M on pepsin activity at pH 2, via kinetic parameters and its electrophoretic mobility was evaluated. Kinetic study demonstrated the existence of an activation effect of Al3þ at pH 2 on pepsin molecule. Kinetic analysis with respect to concentrations of haemoglobin showed that Al3þ ions increase the maximal velocity (Vmax) and kcat values rather than apparent affinity for substrate (KS) implying the non-competitive nature of activation which indicated ...Vesna M. Pavelkić, Kristina R. Gopcević, Danijela Z. Krstić, Marija A. Ilić. "The influence of Al3+ion on porcine pepsin activityin vitro" in Journal of Enzyme Inhibition and Medicinal Chemistry, Informa UK Limited (2008). https://doi.org/10.1080/14756360701841095
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High-cellulose content of in-situ Miocene fossil tree stumps and trunks from Lusatia lignite mining district, Federal Republic of Germany
Jolanta Kus, Martina Dolezych, Wilfrid Schneider, James C. Hower, Tamas Hofmann, Ezster Visiné Rajczi, Andras Bidló, Bernadett Bolodár-Varga, Reinhard F. Sachsenhofer, Achim Bechtel, Ksenija Stojanović, Dragana Životić, Ivan Kojić, Maria Mastalerz, Torsten Graupner, Wiliam E. Lukens, Lloyd Donaldson (2024)Second Miocene Seam Complex (2nd MFK; germ.: 2. Mioz¨aner Fl¨ozkomplex) holds many in-situ, not permineralised fossil tree stumps and trunks with high-cellulose contents. The state of preservation of a set of in-situ fossil trees (Taxodioxylon cryptomerioides, Sciadopityoxylon wettsteinii, and Quasisequoioxylon piskowitzense) collected from three open-cast mines (Welzow-Süd, Meuro, and Piskowitz) in Lusatia lignite mining district, Federal Republic of Germany was investigated using a multi-method research schema. Examination of preservation state of thermally immature fossil woods revealed: (1) well-preserved (non-deformed, ...ксилит, холоцелулоза, фосилно и модерно дрво, други слој лужичког лигнита, лигнит, ЦЛСМ, ЦЛСМ обојен калкофлуором, микро-ФТИР, биомаркери, изотопи угљеникаJolanta Kus, Martina Dolezych, Wilfrid Schneider, James C. Hower, Tamas Hofmann, Ezster Visiné Rajczi, Andras Bidló, Bernadett Bolodár-Varga, Reinhard F. Sachsenhofer, Achim Bechtel, Ksenija Stojanović, Dragana Životić, Ivan Kojić, Maria Mastalerz, Torsten Graupner, Wiliam E. Lukens, Lloyd Donaldson. "High-cellulose content of in-situ Miocene fossil tree stumps and trunks from Lusatia lignite mining district, Federal Republic of Germany" in International Journal of Coal Geology, Elsevier BV (2024). https://doi.org/10.1016/j.coal.2024.104494
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Automatic construction of a morphological dictionary of multi-word units
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, multiwordn units, noun phrases, query expansionCvetana Krstev, Ranka Stanković, Ivan Obradović, Duško Vitas, Miloš Utvić. "Automatic construction of a morphological dictionary of multi-word units" in Lecture Notes in Computer Science 6233, Advances in Natural Language Processing, Proceedings of the 7thInternational Conference on NLP, IceTAL 2010, Reykjavik, Iceland, August 2010, Springer (2010): 226-237. https://doi.org/10.1007/978-3-642-14770-8_26