Претрага
1705 items
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Age of the Jurassic hemipelagic sediments from the Ljubiš area (Zlatibor Mt., SW Serbia)
Nikita Bragin, Nevenka Đerić (2020)... pieces of rocks were etched by diluted (5-10%) hydrofluo ric acid (HF) for 12 hours. Then the residue was washed with wa ter and dried. Figure 3. The main Jurassic lithostratigraphic units of the Inner Dinarides (GAW LICK et al., 2017). G eo lo g ia C ro a ti ca Geologia Croatica 73/3146 Unit ...
... Parvimitrella sp. (Plate 1, Table 1). On the basis of the presence of Japonocapsa fusiformis (YAO), an early-middle Bajocian to late Bajocian-early Bathonian (UAZs 3-5; BAUMGARTNER et al., 1995b) age can be inferred. How ever, SUZUKI & GAWLICK (2009) found this species also in association with ...
... (PESSAGNO & WHALEN), Mizukidella sp., Hsuum sp., Tran- shsuum sp., Theocapsomella sp. Due to the presence of Takemu- raella weghae the assemblage is compatible with UAZs 3 to 6, covering the time span from the Bajocian to the Bathonian. As some taxa were determined in open nomenclature and their data adequacy ...Nikita Bragin, Nevenka Đerić. "Age of the Jurassic hemipelagic sediments from the Ljubiš area (Zlatibor Mt., SW Serbia)" in Geologia Croatica, Croatian Geological Survey (2020). https://doi.org/10.4154/gc.2020.11
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Formative evaluation of e-learning projects with the logical framework approach
... and concepts of Evaluation of programs and Projects; section 3 deals with the evaluation of E- Learning Project,; section 4 reports the application of the LFA to an E-Learning project as prospective evaluation model; section 5 outlines implications and presents some conclusions for the research ...
... represent a case example of application to EPs. This confirmed also the purpose of an evaluation Model, that is not just to find out what happened, but to use the information to make the project better. Figure 3: BAEKTEL's LFM ...
... evaluate means to give, recognize, a value in formal, clear and methodologically rigorous way, to a subject (evaluand) [2]. The evaluation as a process nature, being the set of activities related useful for expressing an opinion argued for an aim [3]. Evaluation is the activity aimed to study, evaluate ...Roberto Linzalone, Giovani Schiuma, Ivan Obradović, Ranka Stanković. "Formative evaluation of e-learning projects with the logical framework approach" in The Sixth International Conference on e-Learning (eLearning-2015), September 2015, Belgrade, Serbia, Belgrade Metropolitan Univesity (2015)
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A business intelligence approach to mine safety management
Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Dejan Stevanović, Marija Radojičić (2016)... Ostrava, Safety Engineering Series, 2012. 7(2): p. 1-5. 2. Vaught, C., et al., Knowledge management and transfer for mine emergency response. International Journal of Emergency Management, 2006. 3(2-3): p. 178-191. 13th ISCSM 2016 BELGRADE 9 3. Gagné, C., et al. Knowledge Management in the Quebec ...
... during working time, or during arrival to or departure from work. Finally, our BI system records the sources and causes of injuries, the occurrence and the number of injured workers, with a detailed description of the injury and the safety measures. 13th ISCSM 2016 BELGRADE 5 An electronic ...
... Figure 5 shows the percentage of the total number of injuries in the database for a selected period by days of the week. One can observe from this figure that the majority of minor injuries happens on Thursdays, which can be related to a reduction in working capacity of workers due to fatigue ...Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Dejan Stevanović, Marija Radojičić . "A business intelligence approach to mine safety management" in 13th International Symposium Continuous Surface Mining, Beograd : Yugoslav Opencast Mining Committee (2016)
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Application of stochastic models for mine planning and coal quality control
... pile. (3) Plot the standard deviation from stockyard pile qualities in relation to planned average for various pile sizes (masses). Check the size of the pile, which leads to an acceptable range of content variation. Repeat (2) and (3) for each of several simulated models of sulfur contents to map the ...
... pile. (3) Plot the standard deviation from stockyard pile qualities in relation to planned average for various pile sizes (masses). Check the size of the pile, which leads to an acceptable range of content variation. Repeat (2) and (3) for each of several simulated models of sulfur contents to map the ...
... decreases [4, 5]. The deposition sequence of the material also is able to affect grade predictability of each pile, requiring a more careful mining advance forecast. Often, this scheduling is represented by a vector of grades to coal blocks that will be mined along a given activity time, and geostatistical ...Dejan Stevanović, Božo Kolonja, Ranka Stanković, Dinko Knežević, Mirjana Banković. "Application of stochastic models for mine planning and coal quality control" in Thermal Science, Belgrade : Vinča Institute of Nuclear Sciences (2014). https://doi.org/10.2298/TSCI130201031S
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Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept
Improvements of Machine Learning-based landslide prediction models can be made by optimizing scale, customizing training samples to provide sets with the best examples, feature selection, etc. Herein, a novel approach, named Cross-Scaling, is proposed that includes the mixing of training and testing set resolutions. Hypothetically, training on a coarser resolution dataset and testing the model on a finer resolution should help the algorithm to better generalize ambiguous examples of landslide classes and yield fewer over/underestimations in the model. This ...Uroš Đurić, Miloš Marjanović, Zoran Radić, Biljana Abolmasov. " Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept" in Engineering Geology , Elsevier (2019). https://doi.org/10.1016/j.enggeo.2019.05.007
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The influence of structural modification of Pd(II) pincer-type complexes on the kinetics of substitution reactions
Snežana Jovanović Stević, Snežana Radisavljević, Aleksandar Mijatović, Biljana Petrović, Ana Kesić (2023)This mini-review summarizes the kinetic data obtained for the substitution reactions of some palladium(II) complexes containing bis-pyrazolylpyridine derivatives as pincer-type ligands with biologically significant nitrogen- and sulfur-donor biomolecules as nucleophiles. Three structurally different palladium(II) complexes were selected: [Pd(L1)Cl]+ (Pd1), [Pd(L2)Cl]+ (Pd2) and [Pd(L3)Cl]+ (Pd3) (where L1 = bis(2-(1H-pyrazol-1-yl)ethyl)amine, L2 = 2,6-bis(5-(tert-butyl)-1H-pyrazol-3-yl)pyridine, and L3 = 2,6-bis(5-(tert-butyl)-1-methyl-1H-pyrazol-3-yl)pyridine, while for the entering nucleophiles were used thiourea (Tu), L-methionine (L-met), and guanosine-5’-monophosphate (5’-GMP). Kinetic measurements were carried out for all systems as pseudo-first ...Snežana Jovanović Stević, Snežana Radisavljević, Aleksandar Mijatović, Biljana Petrović, Ana Kesić. "The influence of structural modification of Pd(II) pincer-type complexes on the kinetics of substitution reactions" in 2nd International Conference on Chemo and BioInformatics ICCBIKG 2023, 28-29 September 2023, Institute for Information Technologies, University of Kragujevac, Serbia, Kragujevac : Institute for Information Technologies, University of Kragujevac (2023)
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Critical disorder and critical magnetic field of the nonequilibrium athermal random-field Ising model in thin systems
Svetislav Mijatović, Dragutin Jovković, Sanja Janićević, Đorđe Spasojević. "Critical disorder and critical magnetic field of the nonequilibrium athermal random-field Ising model in thin systems" in Physical Review E, American Physical Society (APS) (2019). https://doi.org/10.1103/PhysRevE.100.032113
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WS4LR - a Worksation for Lexical Resources
... utakmice za svaki takmičarski par, koristeći oznake predviđene pravilima igre. tu> Figure 7: The inflectional transducer N2 D. Format of Transducers 10 "" 100 200 7 2 3 4 5 6 7 8 "" 400 200 0 " /:ms1v" 250 50 1 1 "a/:ms2v:ms4v:mp2v:mw2v:mw4v" 250 100 1 1 "u/:ms3v:ms7v" ...
... complex since more information need to be supplied. In the upper part of the form the information pertaining to the entry as a whole is displayed or typed, while in the lower part the information associated to the compound lemma constituents is entered (Figure 3). For inflected compound constituents ...
... in Appendix E. 3. WS4LR Organization WS4LR is organized in modules which perform different functions as depicted in Figure 1. Figure 1. The UML diagram with WS4LR modules 3.1 Conversion This module enables the user to perform a conversion from one character encoding set to another on a chosen ...Cvetana Krstev, Ranka Stanković, Duško Vitas, Ivan Obradović. "WS4LR - a Worksation for Lexical Resources" in Proceedings of the Fifth Interantional Conference on Language Resources and Evaluation, Genoa, Italy, May 2006, ELRA - European Language Resources Association (2006)
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Energetska efikasnost elektromotora na površinskim kopovima
Snežana Aleksandrović, Ilija Jeftenić (2023)Snežana Aleksandrović, Ilija Jeftenić. "Energetska efikasnost elektromotora na površinskim kopovima" in 11. Međunarodna konferencija “Ugalj i kritični materijali" CCM 2023, Zlatibor, 11-14. oktobar 2023. , Beograd : Jugoslovenski komitet za površinsku eksploataciju (2023)
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Примена нумеричких метода у моделовању тецишта са освртом на различите реолошке услове
Јелка Крушић (2023)Тецишта су комплексне појаве нестабилности које захтјевају истраживања и испитивањакоја до сада нису рађена код нас у области геотехнике. По механизму, начину активирањаи понашању покренутог материјала се знатно разликују од клизишта. Циљ оведисертације је била примјена нумеричких модела пропагације тецишта на примјеру двијепојаве које су се десиле у Србији као посљедица дјеловања циклона Тамара. Детаљноистраживање тецишта подразумијева теренско картирање, теренска истраживања илабораторијска испитивања одабраних узорака са терена. Од теренских истраживања напримјеру тецишта Селанац урађена су геофизичка истраживања Електричнетомографије док ...тециште, нумерички модели пропагације, циклон Тамара, геофизичка истраживања, лабораторијска испитивања, Селанац, Лева река, RAMMS, SPH geoflow, реолошки моделЈелка Крушић. Примена нумеричких метода у моделовању тецишта са освртом на различите реолошке услове, Београд : Универзитет у Београду, Рударско - геолошки факултет, 2023
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Sorpcija herbicida na neorganski i organski modifikovanom prirodnom montmorionitu iz Bogovine
Lazar M. Kaluđerović (2018-01-17)fikasnost prilikom sorpcije S-metolahlora i klomazona od strane neorganskih iorganski modifikovanih montmorionita sa lokaliteta Bogovina odreĎena je metodombach adsorpcije. Uzorci montmorionita su tretirani prvo rastvorom NaCl a zatim irazličitim koncentracijama organskih kompleksa. Adsorpcione izoterme su dobijenetretiranjem uzoraka različitim koncentracijama herbicida. Detaljna mineraloškakarakterizacija uzoraka uraĎena je metodom rendgenske difrakcije. Rezultati interakcijemontmorionita sa organskim kompleksima i herbicidima dobijeni su primenomrendgenskih, optičkih, termičkih i spektroskopskih metoda.Na osnovu rezultata rendgenskih ispitivanja uzoraka, utvrĎeno je prisustvoorganskih kompleksa i herbicida u meĎuslojnom prostoru montmorionita.Montmorioniti modifikovani ...adsorpcija, montmorionit, heksadeciltrimetilamonijum bromid,feniltrimetilamonijum hlorid, S-metolahlor, klomazon... 0, 09 8, 99 ± 0 ,6 2 5, 80 ± 0 ,3 9 4, 75 ± 0 ,3 0 3, 91 ± 0 ,1 5 U zo ra k 4P 7, 61 ± 0 ,3 9 5, 27 ± 0 ,3 3 4, 35 ± 0 ,2 6 3, 70 ± 0 ,2 0 2, 90 ± 0 ,1 5 2, 10 ± 0 ,1 2 U zo ra k 3H 10 ,0 3 ± 0, 84 6, 99 ± 0 ,4 ...
... 0 ,5 4 6, 91 ± 0 ,2 0 5, 55 ± 0 ,1 3 4, 41 ± 0 ,2 3 U zo ra k 2P 4, 87 ± 0 ,2 2 2, 60 ± 0 ,2 0 1, 92 ± 0 ,1 5 1, 86 ± 0 ,1 4 1, 75 ± 0 ,1 0 1, 61 ± 0 ,0 9 U zo ra k 1H 8, 99 ± 0 .5 5 4, 11 ± 0 .0 9 3, 99 ± 0 .1 3 3 ...
... testirane uzorke R, O, 1H-4H i 1P-4P U zo ra k 4H 34 ,3 3 ± 2, 06 16 ,7 0 ± 0, 12 12 ,3 1 ± 0, 58 11 ,3 4 ± 0, 31 8, 10 ± 0 ,4 7 6, 12 ± 0 ,5 1 U zo ra k 4P 7, 82 ± 0 ,5 5 3, 30 ± 0 ,2 9 2, 55 ± 0 ,0 9 2, 34 ± 0 ,1 0 ...Lazar M. Kaluđerović. "Sorpcija herbicida na neorganski i organski modifikovanom prirodnom montmorionitu iz Bogovine" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2018-01-17)
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Hypogene speleogenesis related to porphyry magmatic intrusions and its influence on subsequent karst evolution in the Peruvian high Andes
Alexander Klimchouk, David Evans, Sasa Milanovic, Cristian Bittencourt, Mauro Sanchez, F. Carlos Aguirre (2022)Alexander Klimchouk, David Evans, Sasa Milanovic, Cristian Bittencourt, Mauro Sanchez, F. Carlos Aguirre. "Hypogene speleogenesis related to porphyry magmatic intrusions and its influence on subsequent karst evolution in the Peruvian high Andes" in Geomorphology, Elsevier BV (2022). https://doi.org/10.1016/j.geomorph.2022.108488
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Smanjenje sleganja plitkih temelja primenom mikrošipova
Slobodan Ćorić, Dragoslav Rakić (2021)Mikrošipovi su šipovi malog prečnika koji se grade tako što se u tlu specijalni postupkom formira bušotina koja se zatim armira i injektira. Njihov prečnik je najčešće 150 – 300 mm, a dužina može da bude i više desetina metara. Mikrošipovi mogu da se grade u svim vrstama tla i mogu da budu vertikalni i kosi. Oni se, stoga, koriste kao zamena za konvencionalne šipove i ankere. Primena mikrošipova u fundiranju predstavlja jedan savremeni način izgradnje i sanacije temelja/objekata. ...Slobodan Ćorić, Dragoslav Rakić. "Smanjenje sleganja plitkih temelja primenom mikrošipova" in Zbornik radova međunarodno naučno-stručnog savetovanja Zemljotresno inženjerstvo i geotehnički aspekti građevinarstva, Vrnjačka banja, 3-5. novembar 2021., Beograd : Savez građevinskih inženjera Srbije (2021)
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Dimenzionisanje deponija za ugalj
... od 25-49, što za kapacitete odlaganja od 4-5.000 t/h obezbeđuje formiranje gomile za 24 - 36 sati [7, 9]. Za dve gomile to iznosi 2-3 dana i time se dobija deponija koja je 4-5 puta manja od deponije za akumulisanje i stvaranje rezerve uglja. Razume se, kada je kvalitet uglja na ulazu lošiji, a opseg ...
... Količina uglja odložena na deponiju, % Stanje 31.12. 2,75 1. 99,77 102,52 97,75 4,77 2. 89,57 94,34 90,62 3,72 3. 100,54 104,26 100,41 3,84 4. 105,45 109,29 105,20 4,09 5. 104,68 108,77 103,84 4,93 Suma/prosek 500,00 519,18 497,82 4,27 Kada su kop i termoelektrana na prostorno bliskoj lokaciji ...
... Beograd 3. Carpenter M.A., 1999, Management of coal stockpiles, IEA Coal Research, London 4. Leontijević M., 2010, Mogućnosti homogenizacije uglja u sistemu P.K. "Tamnava" - termoelektrana "Nikola Tesla B" korišćenjem raspoloživih resurs", magistarski rad, Rudarsko-geološki fakultet, Beograd 5. Zador ...Dinko Knežević, Božo Kolonja, Ranka Stanković, Aleksandra Tomašević, Dragana Nišić. "Dimenzionisanje deponija za ugalj" in Jedanaesta međunarodna konferencija o površinskoj eksploataciji OMC, 2014, Zlatibor, 15-18 oktoba 2014, Zlatibor : Jugoskovenski komitet za površinsku eksploataciju (2014)
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A Multilingual Evaluation Dataset for Monolingual Word Sense Alignment
Sina Ahmadi, John P McCrae, Sanni Nimb, Fahad Khan, Monica Monachini, Bolette S Pedersen, Thierry Declerck, Tanja Wissik, Andrea Bellandi, Irene Pisani, [...] Ranka Stanković and others (2020)Aligning senses across resources and languages is a challenging task with beneficial applications in the field of natural language processing and electronic lexicography. In this paper, we describe our efforts in manually aligning monolingual dictionaries. The alignment is carried out at sense-level for various resources in 15 languages. Moreover, senses are annotated with possible semantic relationships such as broadness, narrowness, relatedness, and equivalence. In comparison to previous datasets for this task, this dataset covers a wide range of languages ...... our experiments with respect to those part-of-speech tags. Moreover, there are few languages, such as German, Italian and Serbian, for which only a certain number of the part-of-speech tags 3238 Number of senses Fr eq ue nc y 1 5 10 50 100 500 1 2 3 4 5 >5 Basque Bulgarian Danish Dutch ...
... which made it possible to calculate IAA. Regarding the English (KD) resources, an internal evalu- ation of the annotated data with two annotators show an agreement for 76% of the annotators. Agreement (5-class) Agreement (2-class) Irish (3) 0.83 0.99 English (NUIG) (3) 0.43 0.73 Danish (2) 0 ...
... German Hungarian Irish Italian Serbian Slovenian (JSI) Slovenian (ISJFR) Spanish Portuguese Russian Number of senses Fr eq ue nc y 1 5 10 50 100 500 1 2 3 4 5 >5 Basque Bulgarian Danish Dutch English (KD) English (NUIG) Estonian German Hungarian Irish Italian Serbian Slovenian (JSI) Slovenian (ISJFR) ...Sina Ahmadi, John P McCrae, Sanni Nimb, Fahad Khan, Monica Monachini, Bolette S Pedersen, Thierry Declerck, Tanja Wissik, Andrea Bellandi, Irene Pisani, [...] Ranka Stanković and others . "A Multilingual Evaluation Dataset for Monolingual Word Sense Alignment" in Proceedings of the 12th Conference on Language Resources and Evaluation (LREC 2020), Marseille, European Language Resources Association (ELRA) (2020)
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Production of electricity from coal-fired power plants and accompanying CO2 emissions: comparison of EU-27 and US
Even in the third decade of the 21st century, large power plants are still responsible for more than half of the electricity production in Europe and US. They predominantly use fossil fuels in their work, which results in the emission of pollutants into the air, soil and water. In addition to the production of electric energy, fossil fuels, including coal, are used for industrial purposes. Although the use of coal, especially in the countries of the European Union, is ...... not a member of the EU-27, but is one of the largest emitters of CO> in Europe Table 3. CO;» emissions from coal-fired power plants in 2021 [11] Million | Ratio to the area of IRatio to th bel Ratio to electricity | Ratioto electricity | Ratioto electricity Ratioto GDP tons the territory i: ...
... Bo-B5o:BeB: - Q e q RRRR RRRGSKSSSGSGSGS lss Total electricity generation u Flectricity generation from coal —Coal [%] Figure 5. US electricity production [5, 6| 3. CO-» emissions EU-27 has 193 active coal-fired thermal power plants, with 480 thermal units. The total installed capacity of these ...
... 2%), returning to a decades-long trend of decoupling emissions growth from economic growth that was interrupted in 2021 [2, 3|. Different trends are noticeable between regions and sectors. CO> emissions increased in North America and Asia (excluding the People's Republic of China), to a greater extent ...Uroš Djorgovski, Aleksandar Madžarević, Predrag Jovančić. "Production of electricity from coal-fired power plants and accompanying CO2 emissions: comparison of EU-27 and US" in International Conference on Global Energy and Climate Change - ICGRECC-23, New York, 2023, Research Galery- Science Leagues (2023)
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2D geoelectrical resistivity tomography application at the former city waste dump "Ada Huja": Eco-geological problem
... attenuation due to low value resistivity layers. The GRP section (Figure 5, bottom) corresponds to the marked rectangle on the 2D model-section of true resistivity values (Figure 5, top) where the presence of relatively high resistivity sands had to enable the least amount of attenuation to electromagnetic ...
... corresponds to the two-way travel time of 200 ns,the horizontal reflection is noticed that could indicate a horizontal interface, that was not detected with the geoelectrical scanning method. Acquired borehole data indicated a presence of subsurface water at a depth of around 5 m (Figure 5, middle) ...
... lia, 5 (1), pp. 41-47. THEMELIS, J. N. and PRISCILLA, A. U. (2006) Methane generation in landfills. Renewable Energy, 32, pp. 1243-1257. WEBB, H.K. et al. (2013) Plastic degradation and its environmental implications with special reference to Poly(ethylene terephthalate). Polymers, 5, pp. 1-18 ...Branislav Sretenović, Filip Arnaut, Ivana Vasiljević, Vesna Cvetkov. "2D geoelectrical resistivity tomography application at the former city waste dump "Ada Huja": Eco-geological problem" in Podzemni radovi, Centre for Evaluation in Education and Science (CEON/CEES) (2019). https://doi.org/10.5937/PodRad1934059S
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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)... Effect of Co-Pyrolysis of Lignite and High-Density Polyethylene Aiming to Improve Utilization of Low-Rank Coal Ivan Kojić 1 , Achim Bechtel 2 , Nikoleta Aleksić 3, Dragana Životić 3, Snežana Trifunović 4, Gordana Gajica 5 and Ksenija Stojanović 4,* ���������� ������� Citation: Kojić, I.; Bechtel ...
... 15 greatest producers of lignite [5]. Annually, Serbia produces about 38 Mt of lignite [6,7]. Therefore, it is of great importance to improve the rational utilization of lignite. Coking coals are limited in rank to the interval of vitrinite reflectance from 1.00 to 1.40% [8]. Lignite and low-rank bituminous ...
... 15 greatest producers of lignite [5]. Annually, Serbia produces about 38 Mt of lignite [6,7]. Therefore, it is of great importance to improve the rational utilization of lignite. Coking coals are limited in rank to the interval of vitrinite reflectance from 1.00 to 1.40% [8]. Lignite and low-rank bituminous ...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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P-T analiza uglja RB Kolubara
Rada Vitomir (2024)Rudarski basen Kolubara predstavlja jedno od najvažnijih ležišta lignita u Republici Srbiji i ključni je faktor u snabdevanju zemlje energijom. Kvalitet uglja iz ovog basena direktno utiče na efikasnost termoelektrana i zadovoljenje energetskih potreba. U ovom radu, opisan je značaj tehničke i elementarne analiza uglja kako bi se utvrdili fizičko-hemijski parametri uglja iz Rudarskog basena Kolubara. U drugom delu rada dat je opis P-T analize uglja i njen značaj za ocenu mogućnosti čišćenja uglja. Takođe, dati su i rezultati ...... 20-35 40-65 Grah 5-10 10-20 5-10 15-20 10-20 20-35 Sitan 0 5-10 0 5-10 0 10-20 Griz 0 5 3-5 10 5-10 10-20 Prah 0 3 0 3-5 0 5-10 Minimalnu količinu srednjeg reprezentativnog uzorka dobijamo tako što je određujemo prečnikom najkrupnijih komada u svakoj posmatranoj klasi. U tu svrhu se koristi ...
... 156,00 523,85 ”,š 7,09 1681,%5 .,ž h5,3% 5 16 S,3 . 5,3 2%,10 — 127,73 — 6%1,58 79,1 | 8,23 WABN,65 - 26,2 56,66 6 ,7 2,7 2,7 487,80 — 129,06 — 780,6 | 81,8 | 9,5% 1356,932 — 20,3 · 6%,52 7 ,8 5,5 5,5 56,30 — 309,65 10%0,293 87,3 - 12,% 1227,86 | 18,2 · 67,% tome 1,8 "1,? 12,7 72,30 318,21 ...
... težina frakcije U kolonu 3 težinski udeo frakcije U kolonu 4 sadržaj ukupnog pepela u svakoj frakciji prema rezultatima hemijske analize U koloni 5 podaci su dobijeni računarski ı predstavljaju T% i P%; ovaj zbir podeljen sa zbirom težinskih udela frakcija (kolona 3) daje srednji sadržaj pepela ...Rada Vitomir. P-T analiza uglja RB Kolubara, 2024
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Laboratory testing of fly ash
Fly ash is one of the most common waste materials created by burning of coal. It is composed of smaller particles, consisting mainly of aluminosilicate glass, mullite and quartz, which are collected by electrostatic separators (filter) of gaseous products arising from the combustion of coal. This paper presents the pozzolanic properties, mechanical properties, chemical and mineral composition of fly ash obtained in the combustion process in a power plant Nikola Tesla A (PPNT A) with the addition of a ...chemical composition, fly ash, mechanical properties, mineral properties, pozzolanic properties, X-ray diffraction... separators (filter) of gaseous products arising from the combustion of coal [2]. Serbia produces about 5 million tons of fly ash annually during coal combustion in the power plants [3]. The samples subject to laboratory tests were taken from the thermal power plant Nikola Tesla A (PPNT A) in Obrenovac. ...
... pozzolan F C N SiO2+Al2O3+Fe2O3 min (%) 70 50 70 SO3 max (%) 5 5 4 Humidity max (%) 3 3 3 Loss on ignition max (%) 6 6 10 Class F of fly ash is silicate, or silicate and aluminat material whose selfhardening effect is small or absent. In the presence of moisture at room temperature fly ash reacts ...
... Aluminate <2 <15 <3 III Sulfate - Alkaline undefined >15 >3 IV Other (lime) undefined >15 <3 2. The classification of fly ash according to the module R size ( ) ( )32 32 OFeMgOCaO AlOSiO R ++ + = (1) According to module R size, fly ...Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić. "Laboratory testing of fly ash" in Tehnički vijesnik (2016). https://doi.org/10.17559/TV-20150317171035