Претрага
54 items
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Research on influence of track stiffness on development of rail squat defects
This paper presents research aiming to establish the relationship between track stiffness and the appearance and development of squat defects on running rails. Uneven incidence of squat defects was observed on the rails of the investigated main transit track in arailway station. Inspection of track support conditions was conducted using an electrometric method. The comparative analysis of the research results indicated a correlation between the incidence of squats and the changes in track support stiffness. The electrometric profiles and ...Milica Mićić, Zdenka Popović, Luka Lazarević, Dejan Vučković, Ljiljana Brajović. "Research on influence of track stiffness on development of rail squat defects" in Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, SAGE Publications (2024). https://doi.org/10.1177/09544097241306463 М23
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Application of Thermal Imaging in Surface Mining
Milanka Negovanović (2022)Termalno snimanje se sve više koristi u rudarskoj industriji kao jedan od dijagnostičkih alata za praćenje određenih proizvodnih procesa, kao i stanja opreme i mašina. Predstavlja nedestruktivnu i beskontaktnu metodu ispitivanja koja omogućava rano otkrivanje problema, planiranje održavanja sa minimalnim kvarovima, sprečavanje neplaniranih poremećaja, posmatranje materijala u nepristupačnim ili opasnim područjima i poboljšanje bezbednosti i produktivnosti. Termalno snimanje koristi specijalizovane termalne kamere sa unutrašnjim detektorima koji identifikuju veoma male temperaturne varijacije i proizvode sliku tog nevidljivog infracrvenog ili toplotnog ...Termalno snimanje, nedestruktivne metode testiranja, površinska eksploatacija, termalne kamere, rudarske operacijeMilanka Negovanović. "Application of Thermal Imaging in Surface Mining" in 15th International Conference OMC 2022, Zlatibor, 12-15th October 2022, Jugoslovenski komitet za površinsku eksploataciju (2022) М31
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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 М21а
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Testing and calibration of continuously operating belt weighers
Aleksandrović Snežana, Jović Mihajlo (2011)Aleksandrović Snežana, Jović Mihajlo. "Testing and calibration of continuously operating belt weighers" in Przegląd Elektrotechniczny 2011 no. 7, Warsyawa, Poland:SIGMA-NOT, Warsyawa (2011): 276-279 M23
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Geomechnical research for the new bucket wheel excavator testing at Open pit “Filijala”
Since 1976 cement marl excavation at open-pit mine „Filijala” is carried out by continuous exploitation technology using bucket wheel excavator SH 400 manufactured by Orenstein und Koppel (O & K) company. Due to the bucket wheel excavator time-worn and high operating cost it was necessary to replace it with new one. In order to test the new bucket wheel excavator and prove its capacity a testing zone was defined as test block for excavation, in which the bucket wheel ...Vladimir Čebašek, Nebojša Gojković, Veljko Rupar, Miodrag Pribićević. "Geomechnical research for the new bucket wheel excavator testing at Open pit “Filijala”" in Рударски гласник, Рударски институт - Београд (2020). https://doi.org/10.25075/BM.2020.07 М51
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Quantity testing of the defects in aluminum plates using pulsed thermography
Tomić Ljubiša, Damnjanović Vesna, Dikić Goran, Milanović Bojan, Bonžulović Boban. "Quantity testing of the defects in aluminum plates using pulsed thermography" in Proceedings of OTEH 2014 (6th International Scientific conference on Defensive Technologies), 9-10 October 2014, Belgrade, Serbia: (2014) M33
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The Testing of Harmful gases using Passive Infrared Thermography
Tomić Ljubiša, Damnjanović Vesna, Aleksandrović Snežana. "The Testing of Harmful gases using Passive Infrared Thermography" in Journal Underground Mining Engineering XXI no. 2, Beograd, Srbija:Faculty of Mining and Geology, Belgrade (2013): 99-109 M51
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Laboratory Testing of Nanosilica- Reinforced Silicate and Polyacrylamide Gels
Irina Zahirovic, Dušan Danilović, Milica Šuput Vranjin, Miloš Tripković. "Laboratory Testing of Nanosilica- Reinforced Silicate and Polyacrylamide Gels" in SPE Journal (2023) М21
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Testing the energy value of different types of coal by the method of active thermography
In this paper, coal thermograms are presented and analyzed in order to determine their energy value. Two types of coal of different categories, brown and lignite, were selected for active thermographic imaging. The tested coal samples were processed before measurement so that they are similar in dimensions and have two plane-parallel smooth surfaces. The test samples were "primarily" heated under the same conditions and the process of their cooling was monitored by a thermal camera. "Then" they were cooled ...Stevan Đenadić, Ljubiša Tomić, Vesna Damnjanović, Predrag Jovančić, Dragutin Jovković. "Testing the energy value of different types of coal by the method of active thermography" in 9th International Scientific Conference on Defensive Technologies, Belgrade, Serbia, 15-16 October 2020, The Military Technical Institute (2020) М33
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Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining
Vladimir Čebašek, Veljko Rupar, Stevan Đenadić, Filip Miletić. "Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining" in Minerals, MDPI AG (2021). https://doi.org/10.3390/min11060564 М22
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Testing of NMC and LFP li-ion cells for surface temperature at various conditions
Ognjen Popović, Veljko Rupar, Željko Praštalo, Snežana Aleksandrović, Vladimir Milisavljević. "Testing of NMC and LFP li-ion cells for surface temperature at various conditions" in Case Studies in Thermal Engineering, Elsevier (2024). https://doi.org/10.1016/j.csite.2024.104930 М21а
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Laboratory Testing and Simulation of the Paraffin Deposition in Turija Field Oil Well in Vojvodina Region, Serbia
Danilović Dušan, Karović-Maričić Vesna, Šećerov Sokolović Radmila, Ivezić Dejan, Živković Marija (2011)Danilović Dušan, Karović-Maričić Vesna, Šećerov Sokolović Radmila, Ivezić Dejan, Živković Marija. "Laboratory Testing and Simulation of the Paraffin Deposition in Turija Field Oil Well in Vojvodina Region, Serbia" in Hemijska Industrija 65 no. 3, Beograd:Savez hemijskih inženjera (2011): 249-256. https://doi.org/10.2298/HEMIND101228007D M23
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Testing of Nmc and Lfp Li-Ion Cells for Surface Temperature at Various Conditions
električna vozila na baterije, toplotno opterećenje, li-jonske ćelije, nmc, lfp, temperatura površine ćelijeOgnjen Popović, Veljko Rupar, Željko Praštalo, Snežana Aleksandrović, Vladimir Milisavljević . "Testing of Nmc and Lfp Li-Ion Cells for Surface Temperature at Various Conditions" in Case Studies in Thermal Engineering, Science Direct (2024) М21а
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Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal
Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović (2018)glukoza, fruktoza, аktivni ugalj, hidrotermalni tretman, aktivacija hidroksida, teški metali, metilen plavoSanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović . "Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal" in Minerals, MDPI (2018) М22
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Determining threaded machine element fabrication technology by pulsed thermography
Stevan Jovičić, Ljubiša Tomić, Aleksandar Kovačević, Nenad Munić, Vesna Damnjanović. "Determining threaded machine element fabrication technology by pulsed thermography" in Science of Sintering, National Library of Serbia (2024). https://doi.org/10.2298/sos240112005j М22
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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 diffractionMiloš 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 M23
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Non-Detonating Chemical Mixture for Non-Invasive Methods of Rock Breaking
Within the Innovation developed several different non-detonating chemical mixtures for non-invasive methods of rock breaking. Laboratory and polygon tests gave the satisfactory results and knowledge enough to start the practical experiments in the field. The basis of this innovation is a theoretical assumption that certain chemical mixtures release a large quantity of gases during combustion. If these gases are found in the enclosed space a growing pressure on the walls of the chamber in which combustion takes place will ...Lazar Kričak, Milanka Negovanović, Nikola Simić, Stefan Milanović. "Non-Detonating Chemical Mixture for Non-Invasive Methods of Rock Breaking" in X International Scientific Congress Innovations 2024, Varna, Bulgaria, 24-27. jun 2024, Scientific Technical Union of Mechanical Engineering "Industry 4.0" (2024) М33
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Structure and morphology of chars and activated carbons obtained from thermal treatment of coal and biomass origin materials, including their wastes: Results from the ICCP Microscopy of Carbon Materials Working Group
Georgeta Predeanu, Małgorzata Wojtaszek-Kalaitzidi, Isabel Suárez Ruiz., Mihaela N Bălănescu, Angeles Gómez Borrego, Mircea D.Ghiran, Paul C.Hackley, Stavros Kalaitzidis, Jolanta Kus, Maria Mastalerz, Magdalena Misz-Kennan, Slawka Pusz, Sandra Rodrigues, Georgios Siavalas, Atul Varma, Alexander Zdravkov, Dragana Životić (2024)This paper describes the evaluation of petrographic textures in char and activated carbon derived from coal, coal by-products and biomass, formed during carbonization and activation processes. This work represents the results of interlaboratory exercises from 2016 to 2022 of the Microscopy of Carbon Materials Working Group in Commission III of the International Committee for Coal and Organic Petrology. The interlaboratory exercises were run on photomicrograph samples. For textural characterization of carbon materials, the existing American Society for Testing and ...чађ/биочађ, активни угљеник, термичка обрада (конвенционална/неконвенционална), адсорпција, међулабораторијака вежбања, ICCPGeorgeta Predeanu, Małgorzata Wojtaszek-Kalaitzidi, Isabel Suárez Ruiz., Mihaela N Bălănescu, Angeles Gómez Borrego, Mircea D.Ghiran, Paul C.Hackley, Stavros Kalaitzidis, Jolanta Kus, Maria Mastalerz, Magdalena Misz-Kennan, Slawka Pusz, Sandra Rodrigues, Georgios Siavalas, Atul Varma, Alexander Zdravkov, Dragana Životić. "Structure and morphology of chars and activated carbons obtained from thermal treatment of coal and biomass origin materials, including their wastes: Results from the ICCP Microscopy of Carbon Materials Working Group" in International Journal of Coal Geology, Elsevier BV (2024). https://doi.org/10.1016/j.coal.2024.104519 М21а
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Integrating landslide magnitude in the susceptibility assessment of the City of Doboj, using machine learning and heuristic approach
In this work, landslide assessment of the Doboj City area was modeled by combining machine learning and heuristic tools. The machine learning part was used to map the Morphometric factor. i.e. probability of landslides based on relation between the magnitude of events and morphometric parameters: elevation, distance to streams, slope, profile curvature, and aspect. The Random Forest and Support Vector Machines algorithms were implemented in the learning protocol, which included several strategies: balancing of the training/testing set size, algorithm ...Cvjetko Sandić, Miloš Marjanović, Biljana Abolmasov, Radislav Tošić. "Integrating landslide magnitude in the susceptibility assessment of the City of Doboj, using machine learning and heuristic approach" in Journal of Maps, Taylor&Francis (2023). https://doi.org/ 10.1080/17445647.2022.2163199 М22
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Actual contamination of the Danube and Sava rivers at Belgrade (2013)
Milan Antonijević, Marija Arsović, Josef Cáslavský, Vesna Cvetković, Predrag Dabić, Mladen Franko, Gordana Ilić, Milena Ivanovic, Nevena Ivanović, Milica Kosovac, Dragana Medić, Slobodan Najdanović, Milica Nikolić, Jovana Novaković, Tatjana Radovanović, Djurdjina Ranić, Bojan Šajatović, Gorica Špijunović, Ivana Stankov, Jelena Tošović, Polonca Trebse, Olivera Vasiljević, Jan Schwarzbauer (2014)rečni sistemi, stanje zagađenja, organski zagađivači, teški metali, skrining analize, non-target screeningMilan Antonijević, Marija Arsović, Josef Cáslavský, Vesna Cvetković, Predrag Dabić, Mladen Franko, Gordana Ilić, Milena Ivanovic, Nevena Ivanović, Milica Kosovac, Dragana Medić, Slobodan Najdanović, Milica Nikolić, Jovana Novaković, Tatjana Radovanović, Djurdjina Ranić, Bojan Šajatović, Gorica Špijunović, Ivana Stankov, Jelena Tošović, Polonca Trebse, Olivera Vasiljević, Jan Schwarzbauer. "Actual contamination of the Danube and Sava rivers at Belgrade (2013)" in Journal of the Serbian Chemical Society, National Library of Serbia (2014). https://doi.org/10.2298/JSC131105014A М23