Претрага
2165 items
-
Dimenzionisanje deponija za ugalj
... Beograd 5. Zador A.T., 1994, Technology and Economy of blending and mixing, The best of bulk solids handling: Stacking, Blending and Reclaiming of bulk materials - B/94, Trans Tech Publication 6. Wolpers FM, 1995, Homogenization of bulk material in longitudinal and circular stockpile arrangements, Beltcon ...
... Banković M. V., 2013, Application of stochastic models for mine planning and coal quality control, www.doiserbia.nb.rs/img/doi/0354-9836/2013%20OnLine-First/ 0354- 98361300031S.pdf 8. Erasmus J. H., Bulk Raw Materials Storage Selection, www.beltcon.org.za/ docs/b1111.pdf 9. Kolonja B. i dr. ...
... 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 ...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)
-
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
-
Multi-Criteria Approach for Selecting Optimal Dozer Type in Open-Cast Coal Mining
Ivan Janković, Stevan Đenadić , Dragan Ignjatović , Predrag Jovančić , Tomislav Šubaranović, Ivica Ristović (2019)... the working of the basic machinery, lowers the production and may lead to breakdowns or endanger the people. In open-cast coal mines, dozers often work under aggravated conditions with the materials of different physical–mechanical qualities and under variable weather conditions. Under such circumstances ...
... the working of the basic machinery, lowers the production and may lead to breakdowns or endanger the people. In open-cast coal mines, dozers often work under aggravated conditions with the materials of different physical-mechanical qualities and under variable weather conditions. Under such circumstances ...
... analysis covered four different machine manufacturers, and to provide the necessary objectivity in the interpretation of the results of the analysis, the prefix Type (T1, T2, T3, T4) will be used instead of the names of the manufacturers. 2. Materials and Method 2.1. The Usage of the Dozers in Open-Cast ...Ivan Janković, Stevan Đenadić , Dragan Ignjatović , Predrag Jovančić , Tomislav Šubaranović, Ivica Ristović . "Multi-Criteria Approach for Selecting Optimal Dozer Type in Open-Cast Coal Mining" in Energies, MDPI (2019). https://doi.org/https://doi.org/10.3390/en12122245
-
Valorization of non-balanced coal reserves in Serbia for underground coal gasification
David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić (2019)In the name of a better and safer energy future, it is our responsibility to focus our knowledge and activities to save on imported liquid and gas fossil fuels, as well as coal on which energy security of Serbia is based. The rationalization in the use of available energy resources certainly positively affects economy and the environment of a country. This paper indicates motivations for the application of the underground coal gasification process, as well as surface gasification for ...... gas mixture of UCG, and its possible storage carbon capture and storage, depends on the technological development of the separation and storage of CO [3]. Syngas can be used to produce a number of usable products, such as electricity, liquid fuels and chemical raw materials. The competitiveness ...
... Tasks in Thermodynamics with Thermotechnics, Faculty of Tech- nology and Metallurgy, Belgrade, Serbia, 2004 10] Krejnin, E. V., Unconventional Thermal Technologies for the Extraction of Hard Fuels: Coal, Hydrocar- bon Raw Materials (in Russian), CRC Gazprom, Moscow, Russia, 2004 11| Petrović, D. et ...
... es of Coal Conversion into Gas Fuel from the Aspect of Greater Valorization of Available Energy Resources in Serbia by Implementing UCG, RMZ-Materials and Geoenvironment, 57(2010), 1, pp.113-125 Petrović, D. T., et al.: Valorization of Non-Balanced Coal Reserves in Serbia for ... THERMAL SCIENCE: ...David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić. "Valorization of non-balanced coal reserves in Serbia for underground coal gasification" in Thermal Science (2019). https://doi.org/10.2298/TSCI190725390P
-
Improving efficiency of thermal power plants through mine coal quality planning and control
Главни циљ контроле квалитета угља у рудницима лигнита је снабдевање термоелектрана угљем чији квалитет мора да се креће унутар одређених квалитативних ограничења. Карактеристике угља могу да утичу на ефикасност, поузданост и расположивост како котла тако и јединица за контролу емисије. У овом раду аутори су презентовали интегрисану симулацију рударског процеса као нови приступ у истраживању променљивости калоричне вредности угља приликом експлоатације комплексног лежишта лигнита. Резултати таквог приступа омогућавају драгоцен увид у перформансе континуалног рударског система у смислу контроле променљивости ...Mirjana Banković, Dejan Stevanović, Milica Pešić, Aleksandra Tomašević, Ljiljana Kolonja. "Improving efficiency of thermal power plants through mine coal quality planning and control" in Thermal Science, Vinča Institute of Nuclear Sciences (2018). https://doi.org/10.2298/TSCI170605209B
-
Uniaxial compressive strength test before and after standard fire test on rock mass
Stefan Mitrović, Goran Todorović, Bojan Kostić, Milica Mirković-Marjanović, Nikola Božović, Marija Krstić, Aleksandar Erić, Radovan Gospavić, Snežana Ilić, Aleksandar Kijanović (2022)... Aleksandar Kijanovićc a Faculty of Civil Engineering, University of Belgrade, Serbia b Faculty of Mining and Geology, University of Belgrade, Serbia c Institute for testing materials IMS, Belgrade, Serbia d Unogradnja V.V. Belgrade, Serbia ABSTRACT The paper presents uniaxial ...
... strength testing is a parameter that is determined experimentally. It depends on the structure of the rock mass, grain size and orientation, number and arrangement of cracks and fissures. For the same rock, strength may be different, depending on physical characteristics. Heat of environment can affect ...
... fragments of rock minerals and mica (muscovite and chlorite) which are bound with a limonite clay cement. Quartz clusters dominate, building about 60% of the rock mass. They occur in grains of different sizes, from 0.05 to 0.5 mm. The grains are mostly sub-rounded and partly un-rounded. Some have ...Stefan Mitrović, Goran Todorović, Bojan Kostić, Milica Mirković-Marjanović, Nikola Božović, Marija Krstić, Aleksandar Erić, Radovan Gospavić, Snežana Ilić, Aleksandar Kijanović. "Uniaxial compressive strength test before and after standard fire test on rock mass" in Fifth symposium of the Macedonian Association for Geotechnics, Ohrid, North Macedonia, 23-25. 06. 2022, Macedonian Association for Geotechnics (2022)
-
Trans-Lithospheric Diapirism as a Possible Mechanism for Ophiolite Emplacement?
Nikola Stanković, Taras Gerya, Vladica Cvetković, Vesna Cvetkov. "Trans-Lithospheric Diapirism as a Possible Mechanism for Ophiolite Emplacement?" in EGU General Assembly 2024, Vienna, 14-19 April 2024, Göttingen : Copernicus GmbH (2024). https://doi.org/10.5194/egusphere-egu24-568
-
Development of a petrographic classification system for organic particles affected by self-heating in coal waste. (An ICCP Classification System, Self-heating Working Group – Commission III)
M. Misz-Kennan, J. Kus, D. Flores, C. Avila, Z. Büçkün, N. Choudhury, K. Christanis, J.P. Joubert, S. Kalaitzidis, A.I. Karayigit, M. Malecha, M. Marques, P. Martizzi, J.M.K. O'Keefe, W. Pickel, G. Predeanu, S. Pusz, J. Ribeiro, S. Rodrigues, A.K. Singh, I. Suárez-Ruiz, I. Sýkorová, N.J. Wagner, D. Životić (2020)Self-heating of coal waste is a major problem in the leading coal-producing and consuming countries, independent of the recent or past coal exploitation history. The phenomenon of self-heating is dependent on many factors such as the properties of organic matter (maceral composition and rank), moisture and pyrite content, climate effects, and storage conditions (shape of the dump or compaction of the coal waste). Once deposited, coal waste undergoes oxidation, which can lead to self- heating with the overall temperatures ...M. Misz-Kennan, J. Kus, D. Flores, C. Avila, Z. Büçkün, N. Choudhury, K. Christanis, J.P. Joubert, S. Kalaitzidis, A.I. Karayigit, M. Malecha, M. Marques, P. Martizzi, J.M.K. O'Keefe, W. Pickel, G. Predeanu, S. Pusz, J. Ribeiro, S. Rodrigues, A.K. Singh, I. Suárez-Ruiz, I. Sýkorová, N.J. Wagner, D. Životić. "Development of a petrographic classification system for organic particles affected by self-heating in coal waste. (An ICCP Classification System, Self-heating Working Group – Commission III)" in International Journal of Coal Geology, Elsevier BV (2020). https://doi.org/10.1016/j.coal.2020.103411
-
Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation
kontinentalna tektonika: kompresija, kontinentalna tektonika: ekstenzija, kontinentalna tektonika: transkurentni i transformni rasedi, pukotine, rasedi, zone snažnih deformacija, kinematika deformacija kore i omotača, teorijska mehanika, modelovanje... ruptures and land- slides using image correlation techniques on optical satellite data, Report submitted to EMSC on 19 October 2018 12:00 UTC. Srinivasa, A., 2012. On the use of the upper triangular (or QR) decompo- sition for developing constitutive equations for Green-elastic materials, Int. J ...
... of X-ray computed tomography and digital volume correlation techniques, J. Struct. Geol., 55, 127–149. Adam, J. et al., 2005. Shear localisation and strain distribution during tec- tonic faulting—new insights from granular-flow experiments and high- resolution optical image correlation techniques ...
... R. & Klinger, Y., 2020. Fault geometry and slip distribu- tion of the 2013 Mw 7.7 Balochistan earthquake from inversions of SAR and optical data, J. geophys. Res., 125(7), doi:10.1029/2019JB018380. Le Corvec, N. & Walter, T.R., 2009. Volcano spreading and fault interaction influenced by rift zone ...Taco Broerse, Nemanja Krstekanić, Cor Kasbergen, Ernst Willingshofer. "Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation" in Geophysical Journal International, Oxford University Press (OUP) (2021). https://doi.org/10.1093/gji/ggab120
-
Mechanical Properties of Microwave sintered Hzdroxzlapatite (HAP)
Mirković M., Došen A., Rosić Aaleksandra, Matović B.. "Mechanical Properties of Microwave sintered Hzdroxzlapatite (HAP)" in 3rd Conference of the Serbian Society for Ceramic Materials, 2015, The Book of Abstracts, :Društvo za keramičke materijale Srbije (2015): 88-88
-
Superstructure of Mullite-type KAl9O14
Lazić P. Biljana, Krueger H., Kaindl R., Perfler L., Kremenović Aleksandar, Cvetković Vladica, Withers R.L. (2013)Lazić P. Biljana, Krueger H., Kaindl R., Perfler L., Kremenović Aleksandar, Cvetković Vladica, Withers R.L.. "Superstructure of Mullite-type KAl9O14" in Chemistry of Materials 25 no. 3, Washington, United States:American Chemical Society (2013): 496-502. https://doi.org/10.1021/cm3038476
-
Improved compressive strength of alkali activated slag upon heating
Nikolić Irena, Karanović Ljiljana, Častvan Janković Ivona, Radmilović Vuk, Mentus Slavko, Radmilović Velimir. (2014)Nikolić Irena, Karanović Ljiljana, Častvan Janković Ivona, Radmilović Vuk, Mentus Slavko, Radmilović Velimir.. "Improved compressive strength of alkali activated slag upon heating" in Materials Letters 133, Radarweg 29; Amsterdam, 1043 NX; Netherlands:Elsevier BV (2014): 251-254. https://doi.org/org/10.1016/j.matlet.2014.07.0
-
Mineral safeguarding in Serbia
Vladimir Simić, Dragana Životić, Zoran Miladinović. "Mineral safeguarding in Serbia" in Mineral deposits safeguarding as a basis of mineral raw materials safety, 10–11 May 2022 Kraków, Poland, Publishing House MEERI PAS (2022)
-
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)... well capacity ranges from 5 to 251s i, depending on geology, applied drilling techniclues, construction materials, well development and other factors 17]. In the past, many wel1s were over-pumped and forced beyond their optimal capacities, which caused them to deteriorate c1uic1dy. Therefore, many were ...
... management and monitoring at all levels. 4.9.2 Study Area The aquifer system under study is located between the Danube and Tisa (Tisza) rivers and extends to the vicinity of lGskunfelegyhaza on the Hungarian side (north) and to Vrbas in Serbia (souih). The main groundwater consumers are the cities and industries ...
... paleogeographic conditions and improving the knowledge of geological structures [3-5]: ' Pre-Cambrium and Paleozooic metamorphic schists are the oidest rocks and represent a deep fundament for younger sedimentary rocks, mainly of Tertiary age. Mesozoic sediments mostly of Triassic and Cretaceous ages are ...Zoran Stevanović, Peter Kozák, Milojko Lazić, Janos Szanyi, Dušan Polomčić, Balazs Kovács, Jozsef Török, Saša Milanović, Bojan Hajdin, Petar Papić. "Towards Sustainable Management of Transboundary Hungarian-Serbian Aquifer" in Transboundary Water Resources Management - A Multidisciplinary Approach, Weinheim, Germany : Wiley-VCH (2011): 143-149
-
Heterogenity of knippable raw material used for chipped stone artefact production at the Mesolithic site Lepenski Vir (Serbia)
Šarić Kristina, Šarić Josip, Cvetković Vladica, Gajić Violeta. "Heterogenity of knippable raw material used for chipped stone artefact production at the Mesolithic site Lepenski Vir (Serbia)" in International Symposium on Knappable Мaterials - On the Rocks, :SERP – Universitat de Barcelona, Spain (2015): 117-117
-
Underground loading-haulage equipment selection with application of topsis method with different weighting methods of criteria
The choice of adequate mining machines is one of the most complex problems in the underground exploitation of mineral raw materials. The weight of such a decision is reflected in the high prices of these machines and the occurrence of even greater costs during their use if their choice was wrongly conceived. There are numerous examples from practice in which such decisions were made solely on the basis of comparing the prices of machines, without considering any of the ...utovarno-transportna mehanizacija, izbor, TOPSIS, entropija, standardna devijacija, težina kriterijumaVladimir Krivošić, Luka Crnogorac, Rade Tokalić. "Underground loading-haulage equipment selection with application of topsis method with different weighting methods of criteria" in Underground mining engineering, University of Belgrade - Faculty of Mining and Geology (2024)
-
Cherty rocks from the territory of Serbia as potential raw material for knapped stone artefacts.
Šarić Kristina, Eramo Giacomo, Di Benedetto Giuseppe, Pennetta Antonio, Gajić Violeta, Јоvanović Divna (2015)Šarić Kristina, Eramo Giacomo, Di Benedetto Giuseppe, Pennetta Antonio, Gajić Violeta, Јоvanović Divna. "Cherty rocks from the territory of Serbia as potential raw material for knapped stone artefacts." in On the Rocks, International Symposium on Knappable Мaterials - abstract volume no. 10, Barcelona :SERP – Universitat de Barcelona, Spain (2015): 122-122
-
Surface modification of sol-gel synthesized TiO2 nanoparticles induced by La-doping
Grujić-Brojcin Mira, Armaković Stevan, Tomić N., Abramović Biljana, Golubović Aleksandar, Stojadinović Bojan, Kremenović Aleksandar, Babić Biljana, Dohcević-Mitrović Zorana, Šćepanović Maja (2014)Grujić-Brojcin Mira, Armaković Stevan, Tomić N., Abramović Biljana, Golubović Aleksandar, Stojadinović Bojan, Kremenović Aleksandar, Babić Biljana, Dohcević-Mitrović Zorana, Šćepanović Maja. "Surface modification of sol-gel synthesized TiO2 nanoparticles induced by La-doping" in Materials Characterization no. 88, NEW YORK, NY 10010-1710 USA:Elesevier Science Inc (2014): 30-41. https://doi.org/10.1016/j.matchar.2013.12.002
-
Some examples of interactions between certain rare earth elements and soil
... military, pharmaceutical and nuclear industry, metallurgy, electronics, medicine, chemical engineering1, agriculture2 and others has been on the upscale. The reason of their widespread use in important fields are their different chemical, electrical, magnetic, metallurgical, optical and catalyst properties ...
... spread use and as the consequence of the widespread use there is an increased quantity of waste that is disposed and often in the inappropriate manner and ends up in the nature, disrupting the resources such as water and soil. The contami- nation occurs due to insufficient legal regulations and controls ...
... their nature and ionic forces. CONCLUSION The impact between the soil and rare earth elements and the soil capacity to adsorb these elements has been studied. Freundlich adsorption isotherms for the lanthanum, erbium and gadolinium have been presented in two soil types, the clay and sand soils ...Zlatko Nikolovski, Jelena Isailović, Dejan Jeremić, Sabina Kovač, Ilija Brčeski. "Some examples of interactions between certain rare earth elements and soil" in Journal of the Serbian Chemical Society, National Library of Serbia (2021). https://doi.org/10.2298/JSC211006095N
-
Mikroorganizmi - biohidrogeološki indikatori odabranih pojava mineralnih voda Srbije
Vladimir Šaraba (2021)Sa namerom definisanja hidrogeološke uloge i značaja mikrobiološkog diverziteta odabranih pojava mineralnih voda Srbije, primenom sistema biodetektora, dokazano je prisustvo gvožđevitih, sulfato-redukujućih, sluz-produkujućih, heterotrofnih aerobnih i denitrifikacionih bakterija, na osnovu čega je proračunat rizik od razvoja procesa biokorozije i biohemijske inkrustacije, te zdravstveni rizik. Uz procenu rizika, izvedene su analize skenirajuće elektronske mikroskopije biofilmova i hidrogeohemijsko modeliranje, te makroskopska, otpička i difrakciona ispitivanja naslaga inkrustacije, dok je fizičko-hemijskim analizama utvrđena vrednost ukupne mineralizacije iznad 1 g/L, kao i povišeni ...biohidrogeologija, SEM analize, makroskopska i optička ispitivanja, rendgenska difrakcija praha, hidrogeohemijsko modeliranje, BART analize, metabarkoding analize mikrobioma, fizičko-hemijske analize, starenje bunara (biokorozija, biohemijska inkrustacija i biozarastanje), zdravstveni rizik... microscopy of biofilms, hydrogeochemical modelling and macroscopic, optical and diffraction examination of the encrustations. Physical and chemical analyses indicated total dissolved salts of more than 1 g/L and elevated concentrations of certain metals and non-metals. Metabarcoding of the microbiomes ...
... Keywords: biohydrogeology, SEM analyses, macroscopic and optical assessment, X-ray powder diffraction, hydrogeochemical modelling, BART analyses, metabarcoding of microbiomes, physical and chemical analyses, well aging (biocorrosion, biochemical encrustation and biofouling), health risk. Scientific field: ...
... Štrbački, J., Gajić, V., Vulić, P., Subakov-Simić, G., & Krunić, O. (2019a). Macroscopic, optical and diffraction assessment of encrustations and SEM analyses of phototrophic microbial mats from wellheads and select zones of emergence of mineral water in Serbia.Geologia Croatica, 72(2), 145-162. Doi: ...Vladimir Šaraba. Mikroorganizmi - biohidrogeološki indikatori odabranih pojava mineralnih voda Srbije, Beograd : [V. Šaraba], 2021