Претрага
656 items
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Mikroplastika u peloidima iz Srbije i Slovenije
A. Šajnović, G. Gajica, F. Prosenc, S. Stojadinović, G. Veselinović, P. Trebše, P. Dabić, B. Jovančićević (2023)... Измењено: 2023-10-16 10:50:50 Mikroplastika u peloidima iz Srbije i Slovenije;Microplastics in peloids from Serbia and Slovenia A. Šajnović, G. Gajica, F. Prosenc, S. Stojadinović, G. Veselinović, P. Trebše, P. Dabić, B. Jovančićević Дигитални репозиторијум Рударско-геолошког факултета Универзитета ...
... у Београду [ДР РГФ] Mikroplastika u peloidima iz Srbije i Slovenije;Microplastics in peloids from Serbia and Slovenia | A. Šajnović, G. Gajica, F. Prosenc, S. Stojadinović, G. Veselinović, P. Trebše, P. Dabić, B. Jovančićević | 9. simpozijum Hemija i zaštita životne sredine EnviroChem2023, Kladovo ...
... Poster prezentacije Mikroplastika u peloidima iz Srbije i Slovenije Microplastics in peloids from Serbia and Slovenia 4. Šajnović!, G. Gajica!*, F. Prosenc**, S. Stojadinović!, G. Peselinović!, P. Trebše?, P. Dabić“, B. Jovančićevićš (1) Univerzitet u Beogradu, Institut za hemiju, tehnologiju ...A. Šajnović, G. Gajica, F. Prosenc, S. Stojadinović, G. Veselinović, P. Trebše, P. Dabić, B. Jovančićević. "Mikroplastika u peloidima iz Srbije i Slovenije" in 9. simpozijum Hemija i zaštita životne sredine EnviroChem2023, Kladovo, 4-7. jun 2023., Beograd : Srpsko hemijsko društvo (2023)
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The number of unimodular roots of some reciprocal polynomials
Dragan Stankov (2020)We introduce a sequence P2n of monic reciprocal polynomials with integer coefficients having the central coefficients fixed. We prove that the ratio between number of nonunimodular roots of P2n and its degree d has a limit when d tends to infinity. We present an algorithm for calculation the limit and a numerical method for its approximation. If P2n is the sum of a fixed number of monomials we determine the central coefficients such that the ratio has the minimal limit. ...Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomialsDragan Stankov. "The number of unimodular roots of some reciprocal polynomials" in Cmptes rendus mathematique (2020). https://doi.org/10.5802/crmath.28
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Effects of external noise on threshold-induced correlations in ferromagnetic systems
Dragutin Jovković, Sanja Janićević, Svetislav Mijatović, Lasse Laurson, Đorđe Spasojević. "Effects of external noise on threshold-induced correlations in ferromagnetic systems" in Physical Review E, American Physical Society (APS) (2021). https://doi.org/10.1103/PhysRevE.103.062114
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Potassium-rich magmatism from a phlogopite-free source
Yu Wang, Stephen F. Foley, Dejan Prelević. "Potassium-rich magmatism from a phlogopite-free source" in Geology 45 no. 5 (2017): 467-470. https://doi.org/10.1130/G38691.1
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Optimisation of underground mine decline development system using genetic algorithm
... s s s s s s s sf x y z x y z f x y z f x y z x y z f x y z (2) where 2 2 2 1 1 , , n i i i i i i i f x y z c R x x y y z z (3) 2 2 2 2 1 , , , , , n s s s d i s s s i f x y z x y z d c R x x y y z ...
... constraints and forming a new objective function as follows (Ali, 2014): ( ) if feasible region ( ) ( ) penalty( ) if feasible region f x x f x x f x x x (12) where 0 if no constraint is violated penalty( ) 1 otherwise x (13) There ...
... 35 min 0 1,2,..., subject to : 0 1,2,..., i j L U f x g x i r h x j m x x x (1) In this formulation x is the n-dimensional vector of SBP and UMCP coordinates ...Zoran Gligorić, Aleksandar Ganić, Rade Tokalić, Aleksandar Milutinović. "Optimisation of underground mine decline development system using genetic algorithm" in Underground mining engineering, Beograd : Univerzitet u Beogradu – Rudarsko–geološki fakultet (2014)
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The East Serbian Paleocene alkaline rocks revisited: Evidence of decoupling of Sr-Nd and Pb isotopes in anorogenic setting
Владица Цветковић, Кристина Шарић, V. Höck, Д. Прелевић, F. Neubauer, A. von Quadt. "The East Serbian Paleocene alkaline rocks revisited: Evidence of decoupling of Sr-Nd and Pb isotopes in anorogenic setting" in International Earth Science Colloquium on the Aegean Region, IESCA-2012, :Dokuz Eylül University (2012): 74-74
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Regional setting and correlation of exploration results for the Naarst uranium deposit Dornogobi Province, southeast Mongolia
Vakanjac Boris, Ristić Vakanjac Vesna, Neil F. Rutherford., Damnjanović Vesna. "Regional setting and correlation of exploration results for the Naarst uranium deposit Dornogobi Province, southeast Mongolia" in Arabian Journal of Geosciences 8 no. 10, :Springer Berlin Heidelberg (2015): 8861-8878. https://doi.org/10.1007/s12517-015-1791-x
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Geochemical Determination of the Solar pp-Neutrino Flux with LOREX: A Progress Report.
Miodrag K. Pavićević, Walter F. Henning, Fritz Bosch, T. Uesaka, Yurij A. Litvinov, T. Kubo, Vladan Pejović, Georg Amthauer, Ivan Aničin, Blažo Boev, Vladica Cvetković (2017)Miodrag K. Pavićević, Walter F. Henning, Fritz Bosch, T. Uesaka, Yurij A. Litvinov, T. Kubo, Vladan Pejović, Georg Amthauer, Ivan Aničin, Blažo Boev, Vladica Cvetković. "Geochemical Determination of the Solar pp-Neutrino Flux with LOREX: A Progress Report." in IOP Conf. Series: Journal of Physics: Conf. Series 01-Apr no. 888 (2017). https://doi.org/10.1088/1742-6596/888/1/012192
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Magnetization enhancement and cation valences in nonstoichiometric (Mn,Fe) 3-deltaO 4 nanoparticles
Antić Bratislav, Kremenović Aleksandar, Jović Nataša, Pavlović Miodrag B., Jovalekić Čedomir, Nikolić Aleksandar S., Goya Gerardo F, Weidenthaler Claudia (2012)Antić Bratislav, Kremenović Aleksandar, Jović Nataša, Pavlović Miodrag B., Jovalekić Čedomir, Nikolić Aleksandar S., Goya Gerardo F, Weidenthaler Claudia. "Magnetization enhancement and cation valences in nonstoichiometric (Mn,Fe) 3-deltaO 4 nanoparticles" in Journal of Applied Physics 7 no. 111, CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA:American Institute Physics (2012). https://doi.org/10.1063/1.3700228
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Optimization of photoluminescence of Y2O3:Eu and Gd2O3:Eu phosphors synthesized by thermolysis of 2,4-pentanedione complexes
Antić Bratislav, Rogan Jelena, Kremenović Aleksandar, Nikolić Aleksandar S., Vučinić-Vasić Milica, Božanić Dušan K., Goya Gerardo F., Colomban Philippe (2010)Antić Bratislav, Rogan Jelena, Kremenović Aleksandar, Nikolić Aleksandar S., Vučinić-Vasić Milica, Božanić Dušan K., Goya Gerardo F., Colomban Philippe. "Optimization of photoluminescence of Y2O3:Eu and Gd2O3:Eu phosphors synthesized by thermolysis of 2,4-pentanedione complexes" in Nanotechnology 24 no. 21, TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND:IOP Publishing LTD (2010). https://doi.org/10.1088/0957-4484/21/24/245702
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New data for the geochemical determination of the solar pp-neutrino flux by means of lorandite mineral
Pavićević Miodrag, Bosch F., Amthauer Georg, Aničin Ivan, Boev Blažo, Brüchle W., Faesterman, T., Henning W.F., Jelenković Rade, Pejović Vladan, Djurčić Zoran (2010)Pavićević Miodrag, Bosch F., Amthauer Georg, Aničin Ivan, Boev Blažo, Brüchle W., Faesterman, T., Henning W.F., Jelenković Rade, Pejović Vladan, Djurčić Zoran. "New data for the geochemical determination of the solar pp-neutrino flux by means of lorandite mineral" in Nuclear Inst. and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment A621 (2, Amsterdam, Netherlands:Elsevier (2010): 278-285. https://doi.org/10.1016/j.nima.2010.06.090
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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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Концепт расположивости при дефинисању ефикасног одржавања помоћне механизације на површинским коповима
Radiša D. Đurić (2016-05-30)Оцена расположивости представља основну компоненту уинжењерском управљању опремом. Расположивост је свеобухватни концепткоји представља меру употребног квалитета техничких система, који садржичитаву серију парцијалних индикатора који се односе на време у раду ивреме у отказу система као и на његову функционалну погодност. Овадисертација даје структурну анализу парцијалних индикатора као и развојмодела њихове синтезе на ниво расположивости. Поменути подаци имајухибридни карактер (измерени и експертски добијени) и њихова интеграцијаи синтеза је остварена коришћењем фази пропозиције и фази закључивања.Овакав приступ омогућава оцену техничког система ...управљање опремом, инжењерство одржавања,расположивост, фази закључивање, прикупљање података, булдозер... b = - ln = 0,8707 У табели 4.6 дата је реална расподела техничке расположивости булдозера D8R. Табела 4.6. Реална расподела K f(t) K f(t) K f(t) K f(t) 0.80593 2.41616E-13 0.83980 2.4969E-13 0.88263 2.41897E-13 0.88479 2.41015E-13 0.83073 2.48798E-13 0.85295 2.49352E-13 0.88306 2.41723E-13 ...
... техничке расположивости булдозера D8R, на основу које се црта дијаграм који је дат на слици 4.9. Табела 4.7. Математичка расподела K f(t) K f(t) K f(t) K f(t) 0.79 2.33416E-13 0.82 2.46541E-13 0.85 2.49593E-13 0.88 2.42906E-13 0.8 2.38881E-13 0.83 2.48686E-13 0.86 2.48397E-13 0.89 2.38727E-13 ...
... Докторска дисертација 90 У табели 4.11 дата је реална расподела техничке расположивости булдозера TD25H. Табела 4.11. Реална расподела K f(t) K f(t) K f(t) K f(t) 0.84773 2.69207E-26 0.85834 2.70846E-26 0.87184 2.69231E-26 0.88318 2.64805E-26 0.84792 2.69261E-26 0.86577 2.70462E-26 0.87822 2.67073E-26 ...Radiša D. Đurić. "Концепт расположивости при дефинисању ефикасног одржавања помоћне механизације на површинским коповима" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-05-30)
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Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)
Saša Ivanišević, Dejan Radivojević (2018)Exploration for oil and gas in mature areas, such as the Pannonian Basin, can benefit from reexamination of old data using more advanced modern workflows that focus on the temporal and spatial aspects of sediment deposition. Specifically, we apply a new environment of deposition model that interprets the Upper Miocene- Pliocene sediments as being deposited in a rapidly filling basin characterized by quick shelf edge progradation from the northwest toward the southeast. Reconstruction of this shelf edge trajectory reveals ...Saša Ivanišević, Dejan Radivojević. "Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)" in Interpretation, AAPG SEG (2018). https://doi.org/10.1190/INT-2017-0084.1
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On the possibility to simultaneously determine the long-term average fluxes of solar pp-neutrinos and cosmic ray muons.
Anicin Ivan, Pejović Vladan, Pavićević Miodrag, Amthauer Georg, Boev Blažo, Bosch Fridrih, Brüchle W, Djurčić Zoran, Henning W. F., Faestermann T., Jelenković Rade, Niedermann S, Weiss A. (2011)Anicin Ivan, Pejović Vladan, Pavićević Miodrag, Amthauer Georg, Boev Blažo, Bosch Fridrih, Brüchle W, Djurčić Zoran, Henning W. F., Faestermann T., Jelenković Rade, Niedermann S, Weiss A.. "On the possibility to simultaneously determine the long-term average fluxes of solar pp-neutrinos and cosmic ray muons." in Modern Physics Letters A (MPLA) 26 no. 17, Singapore:World Scientific (2011): 1267-1271. https://doi.org/10.1142/S0217732311035626
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Status and New Data of the Geochemical Determination of the pp-Neutrino Flux by LOREX
Pavićević Miodrag, Bosch Franz, Amthauer Georg, Aničin Ivan, Boev Blažo, Brüchle W., Cvetković Vladica, Djurčić Zoran, Henning W. F. , Jelenković Rade, Pejović, Vladan, Weiss A. (2012)Pavićević Miodrag, Bosch Franz, Amthauer Georg, Aničin Ivan, Boev Blažo, Brüchle W., Cvetković Vladica, Djurčić Zoran, Henning W. F. , Jelenković Rade, Pejović, Vladan, Weiss A.. "Status and New Data of the Geochemical Determination of the pp-Neutrino Flux by LOREX" in Advances in High Energy Physics 2012, New York:Hindawi publishing corporation (2012): 15. https://doi.org/10.1155/2012/274614
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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)
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A Fuzzy Expert Model for Availability Evaluation
Each technical system within itself carries the great potential danger of possible occurrence of failure and damages. Mining machines are characteristic by great investment values, costs of unplanned shutdowns, complex working conditions, and environment and workers hazards. Systematic monitoring of the mining machinery is of great importance for the management of the mining companies. Availability is the overall concept of quality of service. Includes information regard to operating state, an idle state, a standby state and shut down. The ...... 25/avr; R(F-Lib.) = 0.4/exc,0.6/good; M(F-Lib.) = 0.71/good,0.29/avr; S(F-Lib.) = 0.14/exc,0.18/good,0.68/avr; R(F-Drs.) = 0.57/good,0.43; M(F-Drs.) = 0.29/exc,0.14/good,0.43/aver,0.14/adeq; S(F-Drs.) = 0.14/exc,0.29/good,0.43/aver,0.14/adeq; R(F-Cat.) = 0.54/exc,0.46/good; M(F-Cat.) = 0 ...
... (0,306 /exc, 0.306/good, 0.143/avr, 0.122/adq, 0.122/ poor) A(Lib-F) = (0,148 /exc, 0.404/good, 0.206/avr, 0.126/adq, 0.116/ poor) A(Drs-F) = (0,166 /exc, 0.242/good, 0.284/avr, 0.172/adq, 0.137/ poor) A(Cat-F) = (0,334 /exc, 0.281/good, 0.141/avr, 0.122/adq, 0.122/ poor) Graphical ...
... in the form: A = (MAXj=1, …, MAXj=5) = (μA1, …, μA5) (6) The structure of the described max-min composition is presented in Fig. 3. D a ta f o rm Data collection: Reliability, Maintainability, Supportability Expert Judgments Data classification Fuzzification Fuzzy inference engine ...Dejan Ivezić, Miloš Tanasijević, Predrag Jovančić, Radiša Đurić. "A Fuzzy Expert Model for Availability Evaluation" in Proceedings of the 2019 20th International Carpathian Control Conference (ICCC), AGH University of Science and Technology, Kraków - Wieliczka, Poland (2019)
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Microemulsion with aromatic oil as cleaner media for electropolymerisation
Abstract Microemulsion polymerization is widely used as a cleaner alternative way to prepare intrinsically conductive polymers. We studied isothermal phase diagrams for microemulsions of the electropolymerizable heterocyclic aromatic oil 3,4-ethylenedioxythiophene (EDOT), aqueous LiClO4 solution and alkyl polyethoxylate. Our specific goal was to assess the effect of LiClO4 salt on the phase behaviour. The phase behaviour was characterized by stepwise titration and microscopic analyses. Here we found that the increase of the concentration of LiClO4 salt shifts the microemulsion region ...M. Ilić, F.-H. Haegel, S. Zlatanovic, N. Potkonjak, B. Simonovic. "Microemulsion with aromatic oil as cleaner media for electropolymerisation" in Environmental Chemistry Letters, Springer Science and Business Media LLC (2005). https://doi.org/10.1007/s10311-005-0101-3
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Triassic rift-type basalts and related deep-water sediments in the western ophiolite belt of the Hellenides-Dinarides (from Othrys Mts., Greece to Darno Hill, NE Hungary)
Palinkaš L., Kovacs S., Molnar F., Haas J., Jozsa S., Dosztaly L., Gulacsi Z., Kiss G., Kover S., Ozsvart P., Mikes T., Halamić J., Hravtovič H., Sudar Milan, Jovanović D., Đerić Nevenka, Migiros G, Papanikolau D., Tselepidis V. (2010)Palinkaš L., Kovacs S., Molnar F., Haas J., Jozsa S., Dosztaly L., Gulacsi Z., Kiss G., Kover S., Ozsvart P., Mikes T., Halamić J., Hravtovič H., Sudar Milan, Jovanović D., Đerić Nevenka, Migiros G, Papanikolau D., Tselepidis V.. "Triassic rift-type basalts and related deep-water sediments in the western ophiolite belt of the Hellenides-Dinarides (from Othrys Mts., Greece to Darno Hill, NE Hungary)" in Proceedings of the 19th Congress of the Carpathian Balkan Geological Association, Thessaloniki, Greece, 23-26 September 2010, (Abstract Volume), Geologica Balcanica, Sofia:Carpathian-Balkan Geological Association (2010): 285-286