Претрага

Упит dcterms_subject_txt:Computer Science Applications,Process Chemistry and Technology

2415 items

  • History of meteorite donations to the Collection of Minerals and Rocks of the University of Belgrade, Faculty of Mining and Geology (Serbia)

    Alena Zdravković, Maja Milošević, Kristina Šarić, Ivana Jelić, Ana Černok (2021)
    ... natural science professor at the Great School of Belgrade (Beogradska Velika Škola), the precursor of University of Belgrade. A series of subsequent meteorite falls in Serbia (Jelica in 1889, Čačak in 1919, and Dimitrovgrad in 1947), contributed to further developments of meteorite collections and increased ...
    ... Mining and Geology (UBFMG) contains 52 meteorites organized in two collections: 36 samples are stored in the Collection of Minerals and Rocks and 16 pieces are kept in the Paleontological Collection. In this paper we describe the collection of meteorites at the Collection of Minerals and Rocks, ...
    ... 202 g and P81 Fe-meteorite 48.8 g), and one obviously non-iron meteorite sample that is still unclassified (11.5 cm long). The significance of preserved meteorite specimens in old university collections such as the Collection of Minerals and Rocks at UBFMG is huge both from historical and scientific ...

  • Some Models for Determination of Parameters of the Soil Oscillation Law during Blasting Operations

    Lutovac Suzana, Medenica Dragan, Gluščević Branko, Tokalić Rade, Beljić Čedomir (2016)

  • Испитивање магнетске сусцептибилности прашине антропогеног порекла

    Дубравка Новичић, Весна Цветков, Весна Дамњановић (2019)
    ... [6] Pandey, J. S., Kumar, R., et. al. (2005). Health risks of NO2, SPM and SO2 in Delhi (India). Atmospheric Environment, 39, 6868-6874. [7] Liu, Q., Roberts, A.P. et al. (2012). Environmental magnetism: Principles and applications, Rev. Geophys., 50. [8] Dearing, J. (1999). Environmental magnetic ...
    ... An assessment of global and regional emissions of trace metals to the atmosphere from anthropogenic sources worldwide. Environmental Reviews, 9, 269-298. [2] Márton, E., Lesić, V., et al. (2012). First magnetic measurements on PM10 filters from two stations in Serbia and comparison of the results ...
    ... слободном приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf ...

  • Hydraulic impact of pressure transients from water conveyance tunnel on the complex hydrogeological system: A case study HPP

    Igor Jemcov, Maja Todorović, Aleksandar Jemcov, Marina Ćuk Đurović (2024)
    Tunel pod pritiskom, Unutrašnji pijezometri, Tranzijenti pritiska, Karstna izdan, Pukotinska izdan, Hidraulički odziv
    ... work reported in this paper. Acknowledgement This work was supported by the Ministry of Science, Technological Development and Innovation of the Republic of Serbia (Grant Nos. 451-03–-66/2024-03/200126 and 451–03- 65/2024-03/200126). References (35) G. Fernandez et ol. Excavation-induced ...
    ... involved monitoring of water pressure in the surrounding rock masses and observing the impact of hydraulic transients generated by HPP operation. A comprehensive analysis of monitoring data, incorporating ordinal and partial correlations and considering geological features, provides a profound understanding ...
    ... pressure (Schleiss, 1997, Fernandez and Moon, 2010, Moon and jeong, 2011 ). Usually, in complex geological conditions in hard rocks, tunnels with a large diameter are made of unreinforced concrete lining with grouting to provide stability and prevent permeability. Long-term operation of HPP can cause ...

  • Innovative solution for the pump impeller shaft sealing

    Batalović Veselin (2012)

  • Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)

    Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Richard Spikings, Andreas Wetzel (2016)
    General Earth and Planetary Sciences
    ... Igralishte Pluton (SW Bulgaria): preliminary iso- tope-geochronological and geochemical data. In: Proceedings of Bulgarian Geological Society, Sofia Zidarov N, Tarassova E, Peytcheva I et al (2007) Petrology, geo- chemistry and age dating of Skrut granitoids—new ecvidence for Early Triassic magmatism ...
    ... Yugoslavia. Geological Institute GEMINI, Belgrade Dimitrijević MN, Dimitrijević MD (1987) The turbiditic basins of Serbia. Serbian Academy of Science and Arts, Belgrade Dimitrijević MD, Drakulić N (1958) Kristalasti škriljci Jablan- ice. Zbornik radova RGF 6 Dimitrova E (1964) Petrologie des ...
    ... metamorphic rocks from the Getic zone and the SMM that have experienced clockwise rotation and dextral strike-slip tectonics during the Alpine orogeny (e.g. Csontos and Voros 2004; Figenschuh and Schmid 2005). The evidence of pre-Variscan deformation and HP metamorphism proposed previously ...

  • Application of the Final Flotation Waste for Obtaining the Glass-ceramic Materials

    Mira Cocić, Mihovil Logar, Suzana Erić, Viša Tasić, Snežana Dević, Saša Cocić, Branko Matović (2017)

  • Archaeometric study of medieval pottery excavated at Stari (Old) Ras, Serbia

    Damjanović Ljiljana, Holclajtner Antunović Ivanka, Mioč Ubavka, Bikić Vesna, Milovanović Dragan, Radosavljević Evans Ivana (2011)

  • Strain partitioning in a large intracontinental strike-slip system accommodating backarc-convex orocline formation: The Circum-Moesian Fault System of the Carpatho-Balkanides

    Nemanja Krstekanić, Liviu Matenco, Uroš Stojadinović, Ernst Willingshofer, Marinko Toljić, Daan Tamminga (2022)
    oroklini, raspodela deformacija, transkurentna kretanja, Karpato-balkanidi, Cirkum-mezijski rasedni sistem
    ... are shortly discussed in a larger regional and process- oriented context. 2. Tectonic evolution of the Carpatho-Balkanides during oroclinal bending and Moesian indentation Previous studies have shown that most of the South and Serbian Carpathians and Balkanides mountains are made up of the large ...
    ... Earth Sciences at Utrecht University, the Netherlands and the Faculty of Mining and Geology, University of Belgrade, Serbia during the PhD of Nemanja Krstekanić and is funded by the Netherlands Research Centre for Integrated Solid Earth Science (ISES). We thank Timotije Tufegdžić for his help during ...
    ... amount and rates of CMFS dextral deformation during the formation of the backarc- convex orocline, from 35 km pre-roll-back Cerna Fault displacement (rate of ~3.5 mm/yr) to syn-roll-back 100 km offset of the combined Timok, Rtanj-Pirot and Sokobanja-Zvonce (rate of up to ~2 cm/yr). This process is also ...

  • Parameter determination of soil oscillation law using quotient of the relative growth increments of oscillation velocity and reduced distances at “Nepričava“ open pit mine

    Suzana Lutovac, Sanja Bajić, Marina Ravilić, Radmila Gaćina (2015)
    ... important lithological members from both economic aspect and aspect of mining exploitation technology. Physical and mechanical properties of limestone in the deposit are spatially very uneven (Trajković et al. 2013). By examination of physical and mechanical properties of the working environment, the ...
    ... is transformed into a mechanical work. That energy, in the vicinity of blasting location, destructs and crushes rock mass, a bit further creates cracks and permanent deformations in the rock mass, and even further it is being transformed into elastic deformations. The effect of elastic seismic wave ...
    ... velocity v is given in the form of the function, is most frequently used: nv K R  where R is a reduced distance, and K and n parameters conditioned by soil characteristics and blasting conditions, thereby v is the decreasing convex function of the variable R. By the application of the law of ...

  • New evidence for the use of cinnabar as a colouring pigment in the Vinca culture

    Gajić Kvascev Maja, Marić Stojanović Milica, Smit Z., Kantarelou V., Karydas Andreas G., Šljivar D., Milovanović Dragan, Andrić Velibor (2012)

  • 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
    ... gas-exports-to-european-market-via-tap. 44. Elbassoussy, A., “European energy security dilemma: major challenges and confrontation strategies”, Review of Economics and Political Science, 4, 2019, pp. 321-343. 45. Savez energetičara Srbije, Globalna energetika, SENERGES, 2020, https://www.senerges ...
    ... electricity sector: trends and projections: Analysis in the framework of the EU 2030 climate and energy strategy, JRC, 2017, https://ec.europa.eu/jrc/en/publication/eur-scientific-and-technical- research-reports/renewable-technologies-eu-electricity-sector-trends- and-projections-analysis-framework-eu ...
    ... European Parliament and of the Council of 5 June 2019 on risk-preparedness in the electricity sector, EU 2019/941, 2019, https://eur-lex.europa.eu/legal- content/EN/TXT/?uri=uriserv:OJ.L_.2019.158.01.0001.01.ENG. 12. EU, European Union, Regulation of the European Parliament and of the Council of ...

  • Arsenopirit iz rudnih ležišta Šumadijsko-kopaoničke oblasti: paregeneza, sastav i produkti oksidacije

    Ivana N. Jelić (2023)
    Arsenopirit, FeAsS je čest pratilac polimetaličnih orudnjenja Šumadijsko-kopaoničke oblasti. Jedan je od sulfida koji u najvećoj meri koncentriše zlato. Nepoželjan je u rudama jer njegovom oksidacijom na jalovištima može doći do oslobađanja arsena koji spada u elemente toksične za životnu sredinu. U okviru ovog doktorata sistematski su ispitivani arsenopiriti iz različitih stadijuma i tipova orudnjenja rudnih ležišta i mineralizacija Šumadijsko-kopaoničke oblasti (Rudnik, Sastavci, Trepča, Gokčanica – Drenjak i Rujak, Golijska reka i Jurija). Uzorci arsenopirita ispitivani su polarizacionom mikroskopijom ...
    arsenopirit, zlato, skorodit, Šumadijsko-kopaonička oblast, parageneza, zonarnost
    ... Thermodynamic properties of scorodite and parascorodite (FeAsOu:2H-O), kankite (FeAsO4:3.5H>O), and FecAsOax. Hydrometallurgy 117—118, 47—56. Majzlan, J., Drahota, P., Fillipi, M. (2014): Parageneses and crystal chemistry of arsenic minerals. Reviews in Mineralogy and Geochemistry, 79, 17-184. Maksimović ...
    ... tungsten and tin exploitations. Journal of Hazardous Materials, 186, 590—601. Murphy, T. D. (2015): Bismuth in the supergene environment. A Tesis. The University of Western Sydney. O'Day, P. A. (2006): Chemistry and Mineralogy of Arsenic. Elements, 2, 77-83. Oeser, M., Weyer, S., Horn, IL. And Schuth ...
    ... A., (1960a): The Fe-As-S system: Phase relations and appliations, Part l. Economic Geology, 55, 1345-1381. Clark, L. A., (1960b): The Fe-As-S system: Phase relations and applications, Part II. Economic Geology, 55, 1631-1652. Cook, N. J. and Chryssoulis, S. L. (1990): Concentrations of “invisible ...

  • Optimizacija parametara reza rotornog bagera pri otkopavanju materijala sa povećanom čvrstoćom

    Saša D. Bošković (2016-09-09)
    Otkopavanje materijala rotornim bagerom je veoma sloţen fiziĉko-mehaniĉki proces. Pokazatelji efektivnosti tog procesa zavise od velikog broja raznovrsnih ĉinilaca od kojih se posebno mogu istaći: fiziĉko-mehaniĉke karakteristike materijala koji se otkopava, reţim rada bagera i izbor tehnoloških parametara bloka, odreska i reza, geometrije vedrica i zuba itd. Poseban problem se javlja kod otkopavanja materijala povećane ĉvrstoće, što je ĉest sluĉaj na našim površinskim kopovima. Dimenzionisanje specifiĉne sile kopanja bagera prema manjim masama izuzetno ĉvrstog materijala je neracionalno i rešenje ...
    rotorni bager, parametri reza, otpor na kopanje, dinamika bagera, kapacitet, optimizacija, specifična potrošnja energije
    ... physical physical-mechanical process. Indicators of the effectiveness of this process depends on a number of various factors, of which in particular may be emphasized: physical- mechanical characteristics of the material to be mined, mode of excavator operation and selection of block technological ...
    ... technological parameters, slice and cut, and the geometry of the buckets and teeth, etc. A particular problem occurs in the excavation of materials with increased strength, which is often the case in our opencast mines. Sizing of excavator specific digging forces towards smaller masses of extremely hard ...
    ... structural and technological parameters, whose main goal is virtually increasing the available cutting forces of the excavator and maximum utilization of the available options with maximum protection of the excavator from the adverse impact of dynamic impacts during operation. Type and parameters ...

  • Lamprofiri Kolaričke reke (Boranja)

    Luka Jović (2024)
    Lamprofiri su grupa egzotičnih ultrakalijskih stena poznatih po sadrţaju nekompatibilnih elemenata i elemenata retkih zemalja. U našem delu sveta pojavljuju se u okviru ultrakalijskih provincija u Španiji, Italiji, Srbiji, Makedoniji i Turskoj. U Srbiji su zastupljeni ponajviše u zapadnim delovima zemlje, oko opština Ljubovija i Mali Zvornik, ali i u široj okolini Rudnika, Kopaonika i u istočnoj Srbiji. Mnoga ispitivanja sprovedena su u rudnom polju Veliki Majdan u zapadnoj Srbiji sa čije jugoistočne strane protiče Kolarička reka. Ovaj lokalitet ...
    geohemija, lamprofiri, ultrakalijski magmatizam, elementi retkih zemalja, mešanje magmi, mineta, kersantit, flogopit
    ... Springer Science & Business Media, New York. Seifert T., 2008: Metallogeny and Petrogenesis of Lamprophyres in the Mid-European Variscides, IOS Press BV, Amsterdam. Sun S., McDonough W. F., 1989: Chemical and isotopic systematics of oceanic basalts: Implications for mantle composition and processes ...
    ... lamproites: Indications' from major and trace elements of phlogopite, Chemical Geology. Mitchell R.H., Bergman S. C., 1991: Petrology of Lamproites, Springer Science & Business Media, New York. Mitchell R.H., 1994: The lamprophyre facies, Mineralogy and Petrology, 51:137-146. Wooley A.R ...
    ... Origin and geodynamic significance of 'Tertiary postcollisional basaltic magmatism in «Serbia (central Balkan Peninsula), Lithos, 73(3-4), 161-186. Foley S.F. i dr., 1987: The Ultrapotassic Rocks: Characteristics, Classification, and Constraints for Petrogenetic models, Earth-Science Reviews ...

  • Оптимизација управљања процесима рекултивације површинских копова угља

    Bojan S. Dimitrijević (2014-05-30)
    Ширење површинске експлоатације минералних сировина а нарочито енергетских ресурсафосилних горива, чине површинске копове угља просторно доминантним објектима великих рударскихбасена како у нас тако и у свету. Експлоатациона активност, прати негативне еколошке утицаје наживотну средину шире околине, што нас обавезује на интегрално планирање, ревитализацију,рекултивацију и уређење нарушеног простора за његово поновно хумано коришћење упостексплоатационом периоду. Постексплоатационо санирање и уређење предела површинских коповаи одлагалишта односно нарушеног простора изазваног рударским радовима и пратећих објеката,представља синтетички мултидисциплинарно-интердисциплинаран веома комплексан вишефазниинжењерски пројектни задатак.У уводном ...
    рекултивација, постексплоатациони предео, површински коп угља,вишеатрибутна анализа, одлучивање, процеси, рекултивационо решење
    ... Bascetin, A., A decision support system using analytical hierarchy process (AHP) for the optimal environmental reclamation of an open-pit mine, 2006; 4. Belegendu A. D., Chandrupatla T. R., Optimization Concepts and Applications in Engineering, Cambridge University Press, 2nd edition, pg. 478, 2011 ...
    ... of planning, organizing, monitoring and control of realization of the business activities. As the key process, the land reclamation planning process through all the phases of open pit mine development is made of three levels: preliminary, operative and final, and it can be applied to the new open pit ...
    ... factors. The land reclamation process as the business system is modelled through its subprocesses: technical land reclamation, biological land reclamation, monitoring of the living and working environment while the management is accomplished through the management process containing the subprocesses ...

  • Heavy metals in lignite and soil of Kostolac-Kovin coal basin, eastern Serbia - comparative analysis with selected cities in Serbia, region, Europe and world

    Bogoljub Vučković, Bojan Dimitrijević (2023)
    The Kostolac-Kovin coal basin with an area of 320 km2, with 5 separate layers of coal and with a total of about 5.7 Bt of geological resources and reserves represents an exceptional potential for coal production in Serbia. The coal resources listed in this way are not fully exploitable, but they represent potential for consideration. In this paper, we deal with the geochemical characteristics of coal seams and perform a comparative analysis of coal affectation on the environment. With ...
    lignite, heavy metals, concentrations
    ... during deposition, and subsequently diagenesis of coal, were different for coal compared to sediments. That is, the plant matter that formed the coal layers did not contain increased conccntrations of HM, and this is reflected in their contents in the coal. Also, in the process of coal diagenesis ...
    ... pits of Stari Kostolac and Ćirikovac, after that in the surface mines of Klenovnik and Cirikovac, picture 2) and are not being excavated now; 177 2. Now in the excavation phase are some parts of 1, II and III layers (I and II layers in Kovin by underwater exploitation; II and III layers in the Drmno ...
    ... seams and perform a comparative analysis of coal af}ectation on the environment. P/ith 155 analyzes of HM from coal, 45 from ash, 165 from gravel and 30 from soil, we perform analysis of horizontal and vertical distribution of HM and comparative analysis. B/hat interests us as authors and you as ...

  • The Newton method for solving nonlinear equations based on aggregation operators

    Nebojša M. Ralević, Dejan Ćebić (2019)

  • Savremeni pristup rešavanja problema industrijskog otpada

    Mariја Bošković (2024)
    Rad ukazuje na savremene metode rešavanja problema industrijskog otpada, sa posebnim fokusom na pećnu prašinu koja nastaje tokom metalurških procesa, poput proizvodnje čelika u elektrolučnim pećima. U radu se detaljno razmatra hemijski sastav pećne prašine, koja sadrži teške metale poput cinka, olova i kadmijuma, i naglašavaju ekološki izazovi koje predstavlja njeno zbrinjavanje. Takođe, analiziraju se metode tretmana i valorizacije pećne prašine, uključujući pirometalurške i hidrometalurške procese, pri čemu je poseban akcenat stavljen na reciklažu cinka iz pećne prašine. Dalje, ...
    prašina, elektrolučna peć, cink, teški metali, reciklaža
    ... parents and my brother Matija, as well as my friends who have provided me with unwavering support and encouragement throughout my years of study and during the process of writing this thesis. Their assistance and understanding have been crucial. I am grateful for their patience, motivation, and enc ...
    ... dust, which contains heavy metals like zinc, lead, and cadmium, and emphasizes the environmental challenges posed by its disposal. Additionally, the paper examines treatment and valorization methods for furnace dust, including pyrometallurgical and hydrometallurgical processes, with a special emphasis ...
    ... attention is given to innovative methods that enhance the efficiency of recycling processes and reduce the amount of waste requiring permanent disposal. These methods contribute to more sustainable resource management and reduce the negative environmental impact. Key words: furnace dust, electric arc furnace ...

  • Процена емисије гасова са ефектом стаклене баште као последице енергетске активности

    Горана Остојић (2024)
    Рад се бави анализом и проценом емисија гасова са ефектом стаклене баште, са посебним акцентом на емисије које настају као последица енергетских активности. Ефекат стаклене баште представља природни процес који је неопходан за одржавање живота на Земљи, али антропогене активности, попут индустријске производње и сагоревања фосилних горива, значајно повећавају концентрацију ових гасова у атмосфери, што доводи до климатских промена. Рад истражује узроке, последице и могућности за смањење емисија гасова, као и развој стратегија за ублажавање негативних ефеката на животну ...
    емисија гасова, ефекат стаклене баште, енергетске активности, климатске промене, мобилно сагоревање, стационарно сагоревање
    ... on the analysis and assessment of greenhouse gas emissions, with a particular emphasis on emissions resulting from energy activities. The greenhouse effect is a natural process essential for maintaining life on Earth, but anthropogenic activities, such as industrial production and the burning of ...
    ... work to a process or for usec away from the apparatus. ustri Compnses emissions from fuels combusted by the fuel n Energylh ii extraction or energy-producing industnes. Sum of emisstons from main activity producers of clectricity generation, combined hcat and powcr gencration, and hcat plants ...
    ... sweden/ [34] United Nations Framework Convention on Climate Change (UNFCCC). (2015). The Paris Agreement. Retrieved from https://unfccc.int/process-and-meetings/the- paris-agreement/the-paris-agreement [35] United Nations Framework Convention on Climate Change (UNFCCC). (1997). The Kyoto Protocol ...