Претрага
1393 items
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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 ...... 29:10%m) O ) 10000mX/h If in 4 months (120 days) amount of the burned coal is: 75-50· 63 = 29250 t, then with UCG the amount of gas will bet 29 mil. mž , which is: T =2900 hours =120days, 7=120days=4months (14) 29.10%3 3 . 3 ; 3 m, =—— ——=241667 ma/days , i. e. 10070m,/h, m\, =10070 m\/h (15) ...
... amount of UCG generated gas, taking into account the assumed surface of the exploitation field (75 x 50 m, ! = 6 m, H, = 3140 kJ/mž for gas from lignite) will be: | B,= O„Hp, =29:10%2 -3140 kJ /m,, E„ =25 GWh (10) where H. a [kJmŽ] is the lower thermal value of gas, Q, [mi] — the quantity of the ...
... about 10 times lower than the natural gas. The price of natural gas is around 40 RSD/m?, which leads to: || C! =—-·10=4 RSD/mš 11 s —10 n q Revenue from the delivered amount of gas is: C. k =O,C,=29·10'm) ·4 RSD/m\, C,„ =983·10* e =983000 e (12) This price of the gas can also be corrected up to ...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
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Геолошке карактеристике и 3d модел лежишта угља Соко (Сокобањски басен)
Марсенић Драгослав, Животић Драгана, Јоковић Драган. "Геолошке карактеристике и 3d модел лежишта угља Соко (Сокобањски басен)" in Зборник радова 15. конгреса геолога Србије са међународним учешћем, Београд, [26-29 мај] 2010. = Proceedings of the 15th Congress of Geologists of Serbia with International Participation, Belgrade [26-29 May] 2010, Београд:Српско геолошко друштво (2010): 252-253
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Improving the quality of environmental education through training of teachers for implementation of ICT in the processing of significant environmental dates
Ranđelović Dragan, Damjanović Zvonko, Ranđelović Dragana. "Improving the quality of environmental education through training of teachers for implementation of ICT in the processing of significant environmental dates" in Proceedings / XIX International Scientific and Professional Meeting Ecological Truth, Eco-Ist '11, 01-04 June 2011, Bor, Serbia, Bor:Tehnical Faculty Bor, University of Belgrade (2011): 535-540
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Karst Plateau Dubašnica as Geopark – Contemporary model for Geoheritage protection in Serbia
Ranđelović Dragana, Ranđelović Dragan, Ilić Marina. "Karst Plateau Dubašnica as Geopark – Contemporary model for Geoheritage protection in Serbia" in Proceedings / XXII International Conference Ecological Truth, Eco-Ist '14, 10-13 June 2014, Bor, Serbia, Bor:Tehnical Faculty Bor, University of Belgrade (2014): 40-46
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Optimizacija reznih elemenata rotornog bagera pri otkopavanju uglja
Jovančić Predrag, Ignjatović Dragan, Novaković Dragan. "Optimizacija reznih elemenata rotornog bagera pri otkopavanju uglja" in V Međunarodna konferencija UGALJ 1, Zlatibor:Rudarsko-geološki fakultet (2011): 124-138
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Timok Scientific Tornado- TNT - a model for science popularization and the development of competencies through cooperation with the stakeholders
Ranđelović Dragan, Randjelović Nataša, Ranđelović Dragana. "Timok Scientific Tornado- TNT - a model for science popularization and the development of competencies through cooperation with the stakeholders" in Proceedings of XXV International Conference on Ecological Truth, :Univerzitet u Beogradu, Tehnički fakultet u Boru Univerzitet u Beogradu, Tehnički fakultet u Boru (2017): 478-484
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Textural and compositional characteristics of mantle xenoliths from southeastern Libya: Evidence of mantle refertilization processes
Radivojević Maša, Erić Suzana, Turki Salah M., Toljić Marinko, Cvetković Vladica. "Textural and compositional characteristics of mantle xenoliths from southeastern Libya: Evidence of mantle refertilization processes" in Geophysical Research Abstracts 16, Vienna, Austria:EGU (2014)
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Karakteristike subkontinentalnog omotača ispod jugoistočnog dela Libije
Radivojević Maša, Erić Suzana, Turki Salah M., Toljić Marinko, Cvetković Vladica. "Karakteristike subkontinentalnog omotača ispod jugoistočnog dela Libije" in Оптимално истраживање и одрживо коришћење геолошких ресурса : зборник радова XVI конгреса геолога Србије, Donji Milanovac, 22-25.05.2014. = Optimal Reserach and Sustainable Usage of the Geological Resources : proceedings of the XVI Serbian Geologcal, Beograd:Srpsko geološko društvo (2014): 242-243
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Acoustic - optic approach for the examination of materials condition in objects of cultural heritage
Kričak Lazar, Barr M. Amy, Srećković Milesa, Dragović Magdalena, Čučaković Aleksandar, Ostojić Stanko, Kovačević Aleksandar, Borna Nada (2016)Kričak Lazar, Barr M. Amy, Srećković Milesa, Dragović Magdalena, Čučaković Aleksandar, Ostojić Stanko, Kovačević Aleksandar, Borna Nada. "Acoustic - optic approach for the examination of materials condition in objects of cultural heritage" in Book of Abstracts of 3rd International Conference MODERN METHODS OF TESTING AND EVALUATION IN SCIENCE, :Centralni Institut za konzervaciju, Naučno društvo za razvoj i afirmaciju novih tehnologija (2016): 32-32
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Contemporary methods in long range and In Situ Material definition at various locations of Cultural Heritage significance
Srećković Milesa, Barr M. Amy, Kričak Lazar, Ostojić Stanko, Polić Suzana, Dragović Magdalena, Čučaković Aleksandar (2017)Srećković Milesa, Barr M. Amy, Kričak Lazar, Ostojić Stanko, Polić Suzana, Dragović Magdalena, Čučaković Aleksandar. "Contemporary methods in long range and In Situ Material definition at various locations of Cultural Heritage significance" in Zbornik izvoda i izabranih radova Prvog nacionalnog naučno stručnog skupa MULTIDISCIPUNARNI PRISTUP KULTURNOJ BAŠTINI, SAVREMENIM MATERIJALIMA I TEHNOLOGIJAMA, NANT 2017, Beograd :Centralni Institut za konzervaciju, Naučno društvo za razvoj i afirmaciju novih tehnologija (2017): 84-94
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Cenozoic granitoids in the Dinarides of southern Serbia: age of intrusion, isotope geochemistry, exhumation history and significance for the geodynamic evolution of the Balkan Peninsula
Schefer Senecio, Cvetković Vladica, Fugenschuh Bernhard, Kounov Alexandre, Ovtcharova Maria, Schaltegger Urs, Schmid Stefan M. (2011)Schefer Senecio, Cvetković Vladica, Fugenschuh Bernhard, Kounov Alexandre, Ovtcharova Maria, Schaltegger Urs, Schmid Stefan M.. "Cenozoic granitoids in the Dinarides of southern Serbia: age of intrusion, isotope geochemistry, exhumation history and significance for the geodynamic evolution of the Balkan Peninsula" in International Journal Earth Sci (Geol Rundsch) 100 no. 5, Heidelberg, Germany:Springer-Verlag (2011): 1181-1206. https://doi.org/10.1007/s00531-010-0599-x
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Olivine websterite veins cutting the Rabrovo serpentinites (South Macedonia): New evidence of the arc setting of the East Vardar ophiolites?
Boev Blažo, Prelević D., Božović M., Erić Suzana, Cvetković Vladica. "Olivine websterite veins cutting the Rabrovo serpentinites (South Macedonia): New evidence of the arc setting of the East Vardar ophiolites?" in Prilozi/Contributions 34 no. 01-Feb, Skopje, Republic of Macedonia :Macedonian Academy of Sciences and Arts, Section of Natural, Mathematical and Biotechnical Sciences, MASA (2013): 69-81
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Quartz from allchar as monitor for cosmogenic 26Al: Geochemical and petrogenetic constraints
Pavićević Miodrag, Cvetković Vladica, Amthauer Georg, A Bieniok, Boev Blazo, F Brandstätter, M Götzinger, Jelenković Rade, Prelević Dejan, Prohaska Thomas (2006)Pavićević Miodrag, Cvetković Vladica, Amthauer Georg, A Bieniok, Boev Blazo, F Brandstätter, M Götzinger, Jelenković Rade, Prelević Dejan, Prohaska Thomas. "Quartz from allchar as monitor for cosmogenic 26Al: Geochemical and petrogenetic constraints" in Mineralogy and Petrology 88, Heidelberg, Germany :Springer-Verlag (2006): 527-550. https://doi.org/10.1007/s00710-006-0134-8
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The Late Cretaceous Klepa basalts in Macedonia (FYROM)—Constraints on the final stage of Tethys closure in the Balkans
Dejan Prelević, Simon Wehrheim, Magnus Reutter, Rolf L. Romer, Blažo Boev, Milica Božović, Paul van den Bogaard, Vladica Cvetković, Stefan M. Schmid (2017)Dejan Prelević, Simon Wehrheim, Magnus Reutter, Rolf L. Romer, Blažo Boev, Milica Božović, Paul van den Bogaard, Vladica Cvetković, Stefan M. Schmid. "The Late Cretaceous Klepa basalts in Macedonia (FYROM)—Constraints on the final stage of Tethys closure in the Balkans" in Terra Nova no. 29 (2017): 145-153. https://doi.org/10.1111/ter.12264
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Vodosnabdevanje podzemnim vodama u Srbiji-stanje i perspektive
Dušan Polomčić, Zoran Stevanović, Petar Dokmanović, Petar Papić, Vesna Ristić-Vakanjac, Bojan Hajdin, Saša Milanović, Dragoljub Bajić (2011)... koli¢ine voda koje isti¢u preko svih vrela iznose prosetno 44,5 m°/s (18,85 m?/s u Karpato-balkanidima i 26,65 m?/s u Dinaridima). Karstna lezista Karpato-balkanida odlikuju se ukupnim statickim rezervama od 9,5x10? m?’ vode, a Dinarida 6,4 x10° m? vode. Vece staticke rezerve lezista u isto¢noj Srbiji logi¢na ...
... koli¢ine vode koje se formiraju u prose¢noj hidroloskoj godini krecu se 55x10° m° (Kalafat) do 892x10° m* (Ku¢ajsko-beljanicki masiv). Ispod 100x10° m’ vode formira se u po Cetiri lezista u obe geostrukturne jedinice, a preko 200x10° m’, u Cetiri izdvojena lezista u Karpato-balkanidima (Ku¢ajsko-beljani¢cki ...
... regionalnih lezista od svega 0,1 m’/s (Kalafat) do 8,67 m?/s (Ku¢ajsko-beljanicki masiv). Ispod 0,5 m*/s vode tokom godine, drenira se preko vrela u okviru pet lezita u istocnoj i dva u zapadnoj Srbiji. S druge strane, sumarno srednje isticanje preko vrela vece od 1,0 m?/s je u okviru 15 lezi8ta (Cak 10 ...Dušan Polomčić, Zoran Stevanović, Petar Dokmanović, Petar Papić, Vesna Ristić-Vakanjac, Bojan Hajdin, Saša Milanović, Dragoljub Bajić. "Vodosnabdevanje podzemnim vodama u Srbiji-stanje i perspektive" in Naših 40 godina, Beograd : Rudarsko-geološki fakultet (2011): 49-77
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The Newton method for solving nonlinear equations based on aggregation operators
Nebojša M. Ralević, Dejan Ćebić (2019)Nebojša M. Ralević, Dejan Ćebić. "The Newton method for solving nonlinear equations based on aggregation operators" in XLVI International Symposium on Operational Research SYM-OP-IS, Kladovo, 15-18.9.2019, Универзитет у Београду (2019)
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Agates of the Lece Volcanic Complex (Serbia): Mineralogical and Geochemical Characteristics
Agate veins and nodules occur in the Lece Volcanic Complex (Oligocene-Miocene) situated in the south of Serbia and occupying an area of 700 km2. This volcanic complex is composed predominantly of andesites, with sporadic occurrences of andesite-basalts, dacites and latites, and features agate formations that have been very little investigated. This study focuses on five selected agate occurrences within the Lece Volcanic Complex, employing optical microscopy, scanning electron microscopy (SEM), X-ray powder diffraction analysis, inductively coupled plasma mass spectrometry ...Zoran Miladinović, Vladimir Simić, Nenad Nikolić, Nataša Jović Orsini, Milena Rosić. "Agates of the Lece Volcanic Complex (Serbia): Mineralogical and Geochemical Characteristics" in Minerals, MDPI AG (2024). https://doi.org/10.3390/min14050511
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Mineralogical study of clays from Dobrodo, Serbia, for use in ceramics
Maja Milošević, Predrag Dabić, Sabina Kovač, Lazar Kaluđerović, Mihovil Logar. "Mineralogical study of clays from Dobrodo, Serbia, for use in ceramics" in Clay Minerals, Mineralogical Society (2019). https://doi.org/10.1180/clm.2019.49
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Hydrogeochemistry of Uranium in the Groundwaters of Serbia
Marina Ćuk, Maja Todorović, Petar Papić, Jovan Kovačević, Zoran Nikić. "Hydrogeochemistry of Uranium in the Groundwaters of Serbia" in Uranium - Past and Future Challenges, Springer International Publishing Switzerland (2015). https://doi.org/10.1007/978-3-319-11059-2_89
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Failure Estimation of the Majdanpek Open Pit East Face Based on Inverse Velocity Model
The Majdanpek open pit mine south district is currently active mining prospect of copper ore exploitation in eastern Serbia. Its depth is approaching the termination depth and occurrences of large-scale instabilities and global instability of the final pit slope is possible. These can generate catastrophic mass movement inside an area that encloses a regional road route and the Pek River bed which is channelled along the outer contour of the pit. The displacements that were noted in early 2023, in the ...Miloš Marjanović, Stefan Milanović, Nikola Simić, Lazar Kričak. "Failure Estimation of the Majdanpek Open Pit East Face Based on Inverse Velocity Model" in Regional Symposium on Landslides in the Adriatic-Balkan Region, Belgrade, 15-18th May 2024, University of Belgrade, Faculty of Mining and Geology (2024). https://doi.org/10.18485/resylab.2024.6.ch46