Претрага

Упит dcterms_subject_txt:mining industry

291 items

  • 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 ...
    Fuzzy theory, hydraulic excavator, selection, quality of service, asset management

  • Razvoj modela upravljanja cirkulacijom u postupku bušenja korišćenjem neuro fazi sistema zaključivanja

    Seyed Ali S. Razeghi (2022)
    Gubitak isplake predstavlja nekontrolisano isticanje bušaćeg fluida kroz formacije kao što su kaverne, pukotine, ili drugi slojevi. Tradicionalne metode procene gubitka isplake se zasnivaju na primeni seizmičkih podataka ili pronalasku „mesta“ gubitka isplake na osnovu raspoloživih podataka iz susednih bušotina. Međutim, ove metode procene nisu pouzdane.‘ U disertaciji je izvršena analiza i procena uticaja parametara bušenja, geoloških faktora, karakteristika formacije i fluida na gubitak isplake kao i na formiranje fraktura u formacijama. Uspostavljeni su modeli koji podrazumevaju proces obrade ...
    naftna bušotina, gubitak isplake, fuzzy logika, ANFIS model

  • A Tel Platform Blending Academic And Entrepreneurial Knowledge

    Ivan Obradović, Ranka Stanković, Jelena Prodanović, Olivera Kitanović (2013)
    ... OBRADOVIĆ University of Belgrade, Faculty of Mining and Geology, ivan.obradovic@rgf.bg.ac.rs RANKA STANKOVIĆ University of Belgrade, Faculty of Mining and Geology, ranka.stankovic@rgf.bg.ac.rs JELENA PRODANOVIĆ University of Belgrade, Faculty of Mining and Geology, jelena.prodanovic@rgf.bg.ac.rs ...
    ... University of Belgrade Faculty of Mining and Geology and aimed at gradually becoming the reference resource for mining terminology in Serbian in e- format. The current version of RudOnto contains close to 7000 general concepts that are most frequently used in mining engineering practice, with app ...
    ... admission exams, additional student education, workplace education and life-long learning, integration of creative research potential with industry and academic institutions, for the purpose of achieving better quality and accessibility of education through new technologies. At that, OER ...

  • An oilfield in Libya: A new model to enhance waste water disposal

    Dušan Danilović, Vesna Karović Maričić, Nori Elhaddad, Branko Leković (2016)
    нафта, лежишне воде, припрема

  • Approach to operational mine planning: Case study Tamnava West

    Dejan Stevanović, Mirjana Banković, Milica Pešić Georgiadis, Ranka Stanković (2014)
    ... 1452 490 / G18 1.0 1452 1800 / 5 1800 3752 b) Mining block (# 20/51) divided on a BWE cuts with basic quantity and quality parameters for each cut Figure 9. Mining block divided in excavator’s cuts 3. CONCLUSION In today mining industry is very difficult to achieve production targets and ...
    ... Rudarsko-geološki fakultet, Beograd Ranka Stanković, Univerzitet u Beogradu, Rudarsko-geološki fakultet, Beograd Abstract: In contemporary mining industry is very difficult to achieve production targets and profit without investing effort in detailed excavation planning. It is especially true for ...
    ... operates under governance of Electric Power Industry of Serbia (EPS). Currently, Tamnava West is a biggest coal open pit in Serbia, with capacity of 13 million tons of coal per year. The excavation technology of Tamnava West, is based on continuous mining equipment. Coal and interburden is excavated ...

  • Mesozoic carbonate rocks in Serbia used as dimension stone

    Vesna Matović, Tijana Vojnović Ćalić (2016)
    The building industry in Serbia uses, to a great extent, imported natural stone for architectural purposes. The significance of local deposits, particularly limestones, is not adequately perceived despite the country’s abundance of these valuable resources. Therefore, this study focuses on Serbia’s Mesozoic carbonate rocks, specifically on the deposits of four selected quarries: Klisura, Skrzut, Struganik, and Tisnica. The quality and prospects of the application of these limestones has not yet been the subject of a detailed, comprehensive investigation. Therefore, ...
    Ukrasni kamen, Mezozoik, Krečnjak, Srbija, Petrografija, Fizičko-mehanička svojstva
    ... Received: 2 June 2014/ Accepted: 23 January 2015/ Published online: 1 February 2015 O Springer-Verlag Berlin Heidelberg 2015 Abstract The building industry in Serbia uses, to a great extent, imported natural stone for architectural purposes. The significance of local deposits, particularly limestones ...
    ... material in civil engineering; it is used in the architecture of old cities or modern buildings, in monument heritage sites, and in the memorial industry. With regard to its aesthetic properties, workability, and durability, stone is a favourite material of sculptors as well. In addition to the ...
    ... dimension stone—-slabs for architectural cladding and paving for exterior and interior use—with the possible effect on Serbia's building and stone industry, and eventually the export market. @ Springer V. Matović, T. V. Ćalić Study area The study area includes four selected limestone quarries: ...

  • Application of machine learning for diagnosing the operation of a deep well pump in oil production

    Maja Trikić (2024)
    This paper will thoroughly examine how machine learning can improve the diagnosis of deep well pumps by analyzing the role and function of the pumps, dynamograms, sensor technologies, and diagnostic methods.Our analysis will provide insights into modern techniques and approaches for enhancing the performance and reliability of oil production systems, targeting cost reduction and increased operational efficiency.
    deep well pump, dynamograms, machine learning, diagnostics of operating coditions,Random Forest, XGBoost
    ... of fluids or gases passing through a system. Their applications span various sectors such as the energy industry, chemical manufacturing, water supply and sewage, automotive 33 industry, and many others. Flow sensors help in optimizing processes, conserving Tresources, and ensuring system safety ...
    ... 2024.year Committee: prof.dr Predrag Jovančić,mentor Faculty of Mining and Geology.,Belgrade doc.dr Miroslav Crnogorac,member Faculty of Mining and Geology.,Belgrade doc.dr Aleksandar Madžarević.member Faculty of Mining and Geology.,Belgrade Defense date: SUMMARY This paper will ...
    ... a ananaaaaaaaaaaaaaaaaaaaaaaaaaaaateet 70 LITERATURE.....an a aaanaaaaaaaaaaaaaaaaaaaaaaaaeaeaaaataakakttt 72 1. INTRODUCTION In modern oil industry, the efficiency and reliability of the production process play a crucial role in ensuring stable and economical operations. One of the most important ...

  • Prezentacija projekta "Zaštita ležišta mineralnih sirovina kao osnova sigurnog snabdevanja mineralnim sirovinama u Evropi (safemin4europe)

    Vladimir Simić, Rade Jelenković, Dragana Životić, Zoran Miladinović, Stefan Petrović, Marija Petrović (2022)
    Harmonični ekonomski razvoj svake zemlje u velikoj meri zavisi od dostupnosti sirovina, naročito mineralnih sirovina. Obezbeđivanje njihove dovoljne količine na tržištu (ponude) je od vitalnog značaja za funkcionisanje različitih industrijskih grana koje proizvode različitu robu i opremu neophodnu za ispunjavanje životnih potreba stanovništva kao i za efikasnu poljoprivredu. Mineralne sirovine su neophodne za podršku ekonomskim aktivnostima na lokalnom, regionalnom, nacionalnom i međunarodnom nivou. Ovo su, istorijski, prve sirovine koje su počele da se koriste iz domaćih izvora, i u ...
    ležišta mineralnih sirovina, valorizacija, zaštićena područja, socijalni aspekti

  • The influence of alkyl polyglucosides (and highly ethoxylated alcohol boosters) on the phase behavior of a water/toluene/technical alkyl polyethoxylate microemulsion system

    Marija Ilic, Franz-Hubert Haegel, Vesna Pavelkic, Dragan Zlatanovic, Snezana Nikolic-Mandic, Aleksandar Lolic, Zoran Nedic (2016)
    The influence of additives (alkyl polyglucoside, Glucopon 600 CS UP and alcohol ethoxylate C18E100) on the behavior of the water/toluene/Lutensol ON 50 (technical oxoalcohol, i-C10E5) microemulsion system as a function of temperature and composition has been investigated. The phase behavior of the microemulsions was determined by vertical sections through the Gibbs phase prism (fish-like phase diagrams). Alkyl polyglucoside shifts the one phase region to lower temperatures compared with water/toluene/Lutensol ON 50 mixtures. This is contrary to the expectation, considering ...
    микроемулзија, толуен, алкил полиглукозид, оксоалкохол етоксилат, појачивач ефикасности, „fish“ дијаграми
    ... 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.bg.ac.rs Chemical Industry & Chemical Engineering Quarterly MARIJA ILIĆ! FRANZ-HUBERT ...
    ... on system | Marija Ilic, Franz-Hubert Haegel, Vesna Pavelkic, Dragan Zlatanovic, Snezana Nikolic-Mandic, Aleksandar Lolic, Zoran Nedic | Chemical Industry and Chemical Engineering Quarterly | 2016 | | 10.2298/CICEQ141105015I http://dr.rgf.bg.ac.rs/s/repo/item/0008425 Дигитални репозиторијум Рудар ...
    ... FRANZ-HUBERT HAEGEL? VESNA PAVELKIĆ? DRAGAN ZLATANOVIĆ“ SNEŽANA NIKOLIĆ-MANDIĆ* ALEKSANDAR LOLIĆ ZORAN NEDIĆE !Faculty of Mining and Geology, University of Belgrade, Belgrade, Serbia ŽForschungszentrum Jullich, Institut fur Bio- und Geowissenschaften, IBG-3 Agrosphare, Julich, Germany ...

  • Towards Sustainable Management of Transboundary Hungarian-Serbian Aquifer

    Zoran Stevanović, Peter Kozák, Milojko Lazić, Janos Szanyi, Dušan Polomčić, Balazs Kovács, Jozsef Török, Saša Milanović, Bojan Hajdin, Petar Papić (2011)
    ... Serbia it is assumed that the current exploitation of the transboundary aquifer is around 2.8m3 s-1, of which 7.2m3s-t are r-rsed by individual industry and farms. Groundwater is also used for irrigation purposes, but to a lesser extent because of rain-fed agriculture and the surface waters from the ...
    ... alternative water sources are also analysed. A1luvial deposits along the Danube have the largest potential for water supply of the population and industry but Tisa alluvium should not be neglected. The Danube alluvium has been studied as one of the most promising sources for the regional water supply ...
    ... у 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 ...

  • Groundwater resources for drinking water supply in Serbia´s Southeast Pannonian basin

    Dušan Polomčić, Bojan Hajdin, Marina Ćuk, Petar Papić, Zoran Stevanović (2014)
    menadžment podzemnih voda, monitoring, kvalitet podzemnih voda, bilans, baza podataka

  • Mineral Resources of Serbia: Environmental, Societal and Economic Challenges

    Vladimir Simić, Rade Jelenković, Dragana Životić (2019)
    ... mineral resources industry is not known to many of the actors in the Serbian scientific and technical fields. LEGAL BASICS OF THE MINERAL INDUSTRY Law on Mining and Geological Exploration The legal basis for geological exploration and mining activity is the Law on Mining and Geological Exploration ...
    ... localities. The greatest part of the identified polluted soil localities within the industry belongs to the oil industry (51%), followed by the chemical industry (15%) and the metal working industry (7%). Mining contributes 6 percent. The biggest threat to soil pollution are still large tailing: ...
    ... DIMENSIONS OF THE MINERAL INDUSTRY The extractive mining industry is an important sector of the economy, yet at the same time may constitute a major source of physical and social environmental degradation, the main sources of pollution on the sites included. Intensive mining of mineral ores in Serbia ...

  • Analysis Of the Process Of Carbon Capture Utilization And Storage In Underground Reservoirs

    John Nyame (2024)
    The importance of mitigating the effects of global climate change has necessitated an in-depth exploration of innovative strategies to reduce carbon dioxide (CO2) emissions. Among these strategies, Carbon Capture, Utilization, and Storage (CCUS) has emerged as a promising and transformative solution. This master thesis delves into the diverse realm of CCUS processes, aiming to unravel the positives challenges, and opportunities within this dynamic field. The analysis begins with a systematic examination of carbon capture technologies, encompassing post-combustion, pre-combustion, and oxy-fuel combustion ...
    Carbon Capture, Utilization and Storage
    ... Student: John NyameR574/22 COMMISSION 1. Prof. Dr. Vesna Karović-Maričić Faculty of Mining and Geology 2. Prof.Dr. Branko Leković Faculty of Mining and Geology 3. Prof. Dr. Dušan Danilović Faculty of Mining and Geology Contents ONRN:2. OOA VARAANAARAAAAAAAARAANAANAANAAAANATANAANAANATAA ...
    ... and increasing the use of low-carbon energy sources are essential strategies in reducing CO>» emissions. This analysis allows policymakers and industry leaders to make informed decisions on the implementation and upscaling of carbon capture technologies. The process is debated to be very energy ...
    ... in Canada captures 1 million tons per year carbon emissions from the 150 MW coal power plant ensure safe and clean air. Blue hydrogen is an industry term for hydrogen produced from natural gas and supported by carbon capture and storage. Natural gas is split into hydrogen and CO» by reforming ...

  • Towards a Mining Equipment Ontology

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... http://blog.wandinc.com/2011/10/wand-mining-taxonomy-released.html 2 http://www.meridium.com/news_events/pdfs/Corporate%20Equipment%20Taxonomy%20for%20 MRC%20Meeting%20Jan%202003.pdf 12th International Conference ″Research and Development in Mechanical Industry″ RaDMI 2012 14 - 17. September ...
    ... describe how RudOnto, a terminological resource for mining engineering developed at the University of Belgrade Faculty of Mining and Geology, can be used for generating a mining equipment ontology. RudOnto is an integral part of a specialized mining engineering information system, which features ...
    ... ontology language OWL. Keywords: mining equipment, terminological resources, onotologies, OWL, mining thesaurus 1. INTRODUCTION The use of information technology (IT) is today indispensable in almost all mining engineering areas, including mining equipment management and maintenance ...

  • The optimization of auxiliary machinery in open-cast lignite mines: a case study of bulldozers

    Dragan Ignjatović, Predrag Jovančić, Stevan Đenadić, Ivan Janković, Ivica Ristović (2019)
    One of the most important prerequisites for the successful operation of the open-cast lignite mine is to carry out all the auxiliary works timely with the necessary quality. The most important and most commonly used auxiliary machines are bulldozers. Engaging time of bulldozers use is in direct relation with the coefficients of the time and capacity utilization of the continuous system for the excavation of coal and tailings, which indicates their importance. More than 100 bulldozers have been hired ...
    open-cast coal mine, auxiliary works, bulldozers, optimization, availability
    ... overburden and coal systems on open pit mines of EPS (in Serbian) (2018) Study, Faculty of Mining and Geology, Belgrade 2. Jovantié, P. Maintenance of mining machines (in Serbian), University of Belgrade — Faculty of Mining and Geology, Belgrade, 2014. 3. Gransberg, D.D.; O’Connor, E.P. Major Equipment Life-cycle ...
    ... machines at open-cast coal mines, both by type and the scope of tasks these machines can be used for. In the open-cast lignite mines of Electric Power Industry of Serbia (hereinafter designation EPS), in daily operation аге more than 50 bulldozers from 300 heavy duty auxiliary machines, while 113 are available ...
    ... 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.bg.ac.rs 7% International Symposium MINING AND ENVIRONMENTAL PROTECTION 25 - 28 September ...

  • Пројекат ПРИЗМА: Карактеризација и технолошки поступци за рециклажу и поновну употребу флотацијске јаловине рудника „Рудник“

    Владимир Симић, Стефан Петровић, Филип Арнаут, Весна Цветков, Милена Костовић, Драган Радуловић, Јовица Стојановић, Владимир Јовановић, Дејан Тодоровић, Нина Николић, Јелена Сенћански, Грозданка Богдановић, Драгана Мариловић (2024)
    Prizma, REASONING, Rudnik, jalovina, Fond za nauku Republike Srbije

  • Classification of Terms on a Positive-Negative Feelings Polarity Scale Based on Emoticons

    Mihailo Škorić (2017)
    The goal of this paper is to draw attention to the possibility of using emoticon-riddled text on the web in language-neutral sentiment analysis. It introduces several innovations in the existing framework of research and tests their effectiveness. It also presents a software tool especially made for that purpose, explains how it builds a database with sentimental value of terms and offers the user manual. Finally, it presents a software tool that tests the new database and gives some examples ...
    data mining, information extraction, emotions, text on the web
    ... skipped and only determin- ers in its default form, which is listed on the advanced mining tab, will be found and processed. The mere extraction involves loading selected terms and their values from advanced mining tab in two arrays, and then then processing them. Each of the elements of the first array ...
    ... у 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 ...
    ... Finally, it presents a software tool that tests the new database and gives some examples of the analysis of the ob- tained results. KEYWORDS: data mining, information extraction, emotions, text on the web. PAPER SUBMITTED: 24 January 2017 PAPER ACCEPTED: 25 March 2017 Mihailo Škorić miks@tesla.rcub ...

  • Prioritization of strategic measures for strengthening the security of supply of the Serbian natural gas sector

    Boban Pavlović, Dejan Ivezić, Marija Živković (2020)
    To strengthen the security of supply of the Serbian gas sector, it is necessary to analyze the impact of planned strategic measures. The analysis involves the identification of the most influential threats to the security of natural gas supply and prioritization of the strategic measures for overcoming the consequences of threats. The proposed methodology is based on Fuzzy Analytic Hierarchy Process. The obtained weights for the identified threats and strategic measures are formed according to experts' judgments. The results ...
    Sigurnost snabdevanja, Donošenje odluka, Snabdevanje prirodnim gasom, Fazi AHP, Energetski indikatori

  • Multivarijabilni modeli upravljanja u rudarstvu

    Marjan M. Hudej (2014-02-03)
    osetljivost i rizik. Više pobuda generiše ovakvu atribuciju. Prva je, multivarijabilnostambijentalnih uslova i funkcionalna i strukturna složenost rudarskih sistema (čovek -priroda (radna sredina) - mašina – okruženje); Druga se odnosi na ne postojanje opštenaučne saglasnosti oko ocene pogodnosti modela za podršku odlučivanju i upravljanje.Treća, ako bi saglasnost i postojala, nije sigurno da bi raspoloživi modeli, metode i taktike,dale ekvivalentne rezultate za iste rudničke uslove. Četvrta, sistemske nauke još uveknemaju opšte prihvaćen i u praksi primenljiv algoritam izbora najboljeg rešenja ...
    rudarstvo, odlučivanje, upravljanje, model,multivarijabilno, multiatributno, multikriterijumsko
    ... rion analysis of possible technologies used for selective mining, conveyance and dumping of solum at coal open pit mines of the Electric Power Industry of Serbia, Annual of University of Mining and geology "St. Ivan Rilski", Part II: Mining and mineral processing, Vol. 47, Sofia, Bulgaria, 2004,197-200 ...
    ... LOCATION IN THE NATURAL STONE INDUSTRY USING THE FUZZY MULTIPLE ATTRIBUTE DECISION MAKING METHOD/ IZBOR LOKACIJE POSTROJENJA ZA PROIZVODNJU PRIRODNOG KAMENA UPOTREBOM METODE FAZI MULTIKRITERIJUMSKOG ODLUČIVANJA, The Journal of The Southern African Institute of Mining and Metallurgy, Vol. 108, October ...
    ... 197-200. 102. Vujić S., Optimum dynamic management of mining machinery exploitation life: models with limited interval, Application of Computers and Operations Research in the Mineral Industry, The Pennsylvania State University, USA, APCOM 2005, Taylor & Francis Group - Balkema, London, 2005, 65-70 ...

  • Prognozna ocena resursa kaolinitskih glina u sedimentnim basenima Srbije

    Vladimir M. Simić (2003)
    Kaolinitske gline predstavljaju jednu od privredno najznačajnijih nemetaličnih mineralnih sirovina u Srbiji. Ležišta tih glina odavno se istražuju i eksploatišu u Aranđelovačkom i Kolubarskom basenu i basenima vlašićkog antiklinorijuma. Osim toga, u većem ili manjem obimu istražene su mnoge lokalnosti, a na nekima od njih vršila se povremena eksploatacija. Dosadašnja istraživanja kaolinitskih glina imala su, međutim, prevashodno uzak istraživački cilj - utvrđivanje rezervi glina određenog ležišta, dok su istraživanja regionalnog karaktera bila malog obima i vezana za delove pojedinih ...
    prognozna ocena, resursi kaolinitskih glina, sedimentni baseni, Srbija, geologija, mineralogija, kvalitet, potencijalnost