Претрага
770 items
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The Potential of Biomarkers to Distinguish Lower and Middle Miocene Lignites from the Coal-Mining District of Lusatia
... Lusatia I. Kojic, J. Kus, D. Zivotic, K. Stojanovic Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] The Potential of Biomarkers to Distinguish Lower and Middle Miocene Lignites from the Coal-Mining District of Lusatia | I. Kojic, J. Kus, D. Zivotic, K. Stojanovic ...
... References Bechtel, A., Sachsenhofer, R.F., Markic, M., Gratzer, R., Lücke, A., Püttmann, W., 2003. Organic Geochemistry 34, 1277–1298. Kus, J., Dolezych, M., Schneider, W., Hofmann, T., Visiné Rajczi, E., 2020. International Journal of Coal Geology 217, 103283. Nytoft, H.P., Kildahl-Andersen ...
... were collected from the 2nd Miocene Seam Horizon or its equivalent of Piskowitz (Lower Miocene) and Welzow-Süd (Middle Miocene) open-cast mines (Kus et al., 2020). The contents of moisture, ash, sulphur, and total organic carbon (TOC) were determined. The biomarker compositions were evaluated using ...I. Kojic, J. Kus, D. Zivotic, K. Stojanovic. "The Potential of Biomarkers to Distinguish Lower and Middle Miocene Lignites from the Coal-Mining District of Lusatia" in 30th International Meeting on Organic Geochemistry (IMOG 2021), European Association of Geoscientists & Engineers (2021). https://doi.org/10.3997/2214-4609.202134092
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Characterization of bituminite in Kimmeridge Clay by confocal laser scanning and atomic force microscopy
Paul C. Hackley, Jolanta Kus, João Graciano Mendonça Filho, Andrew D. Czaja, Angeles G. Borrego, Dragana Životić, Brett J. Valentine, Javin J. Hatcheries (2022)This work investigates bituminite (amorphous sedimentary organic matter) in Upper Jurassic Kimmeridge Clay source rock via confocal laser scanning microscopy (CLSM) and atomic force microscopy (AFM). These petrographic tools were used to provide better understanding of the nature of bituminite, which has been historically difficult to identify and differentiate from similar organic matter types in source rocks. As part of an International Committee for Coal and Organic Petrology (ICCP) working group, an immature (0.42% vitrinite reflectance), organic-rich (44.1 wt% ...Битуминит, Kонфокална ласерска скенирајућа микроскопија, Mикроскопија атомских сила, Органска петрологија, Термичка зрелостPaul C. Hackley, Jolanta Kus, João Graciano Mendonça Filho, Andrew D. Czaja, Angeles G. Borrego, Dragana Životić, Brett J. Valentine, Javin J. Hatcheries. "Characterization of bituminite in Kimmeridge Clay by confocal laser scanning and atomic force microscopy" in International Journal of Coal Geology, Elsevier BV (2022). https://doi.org/10.1016/j.coal.2022.103927
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Identification of alginite and bituminite in rocks other than coal: results of Round Robin Exercises of the Identification of Dispersed Organic Matter Working Group of the ICCP
Kus J., Araujo C.V., Borrego A.G., Flores D., Hackley P.C., Hámor-Vidó M., Kalaitzidis S., Kommeren C.J., Kwiecińska B., Mastalerz M., Mendonça Filho J.G., Menezes T.R., Misz-Kennan M., Nowak G.J., Petersen H.I., Rallakis D., Suárez-Ruiz I., Sýkorová I., Životić Dragana (2017)Kus J., Araujo C.V., Borrego A.G., Flores D., Hackley P.C., Hámor-Vidó M., Kalaitzidis S., Kommeren C.J., Kwiecińska B., Mastalerz M., Mendonça Filho J.G., Menezes T.R., Misz-Kennan M., Nowak G.J., Petersen H.I., Rallakis D., Suárez-Ruiz I., Sýkorová I., Životić Dragana. "Identification of alginite and bituminite in rocks other than coal: results of Round Robin Exercises of the Identification of Dispersed Organic Matter Working Group of the ICCP" in International Journal of Coal Geology 178, Amsterdam, Netherlands:Elsevier BV (2017): 26-38. https://doi.org/10.1016/j.coal.2017.04.013
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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
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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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Анализа могућности примене метода повећања степена искоришћења на нафтном лежишту "Ј"
Иван Савић (2024)Комплексно лежиште „Ј“ је сачињено од колектор стена различите стратиграфске припадности и хетерогеног литолошког састава. Лежиште се налази у последњој фази разраде, а током животног века експлоатисано је само примарним методама. У раду је приказана анализа стања разраде лежишта, а као основни фактори који су допринели ниском степену искоришћења лежишта издвојени су вискозност нафте, хетерогеност колектора и пад лежишног притиска. Изведена је хидродинамичка симулациона студија помоћу које је издвојена најпогоднија зона за пилотну примену терцијарних метода. Коришћењем „скрининг“ критеријума ...... IIOBEBA4MIb4 CTEIEH4 HCKOPHIIBEIb4 H4 HADTHOM JIEDKHIHTYy "J". BHCKO3HOCTH H JIyOHHe, uHHH J Cy yCJIOBH y JeKHITTy „J“ rpaHduHH 3a IIpHMeHy KaKO TEDMHUKHX TaKO H XEMHJCKHX MeTOJIa (cnHKa 3.7.). IIpenaMHHapHa rpoteHa TOBOpH a 3a Je)KHITC „J“ HOCTOJH HOTeHTNUHJaJI IIpHMCHe MeTOJe yTHCKHBaHba TIOJIHMepHOT ...
... IIOBEBA4Ib4 CTEIIEH4 HCKOPHITBEPb4 H4 H4ADTHOM JIEDKHIHT y "J". II. AHAJIH3A „NIPHMEHE „METOJAA „MHOBEBAMDA CTEHEHA · „HCKOPMIHIIBEĐDA · HA #7ČđJIPHMEPyY JIK-KHIIITA „J“ 3.1 OcHopBHe uH(popMaintuije o Jne»xHumrry „Je JIexunrre „J“ je MaACHBHO Ca CJIOJKECHHM TPaTIOM, a KOJIČKTODp CTEHE Cy ...
... JIaHOpalı H TJIHHa " Jypa(J): MeraMopQbHe cTeHe (ceprteHTHHHT, rHajc, aM(bHOojur H KpHcTajJlacTH IHIKPpHJPatm)) H nojaBe Oa3HuHHX CTCHa. Jlesxumre HaQre J+M1+M2-1 KonTakrT Boja-HaQra (-905m) „JyPA“ Cnuka 3.1 - IHeMamcku npuka3 eeonouikoe Konuenma neoicuuma „J“ Jlexunrre Je orkpHBeHo 1952 ...Иван Савић. Анализа могућности примене метода повећања степена искоришћења на нафтном лежишту "Ј", 2024
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Analiza primene višekriterijumskih metoda u optimizaciji izbora hidruličnih bagera na površinskim kopovima uglja
Hidraulični bageri primenjuju se u različitim oblastima privrede a najzastupljeniji su u građevinarstvu i rudarstvu. Na površinskim kopovima sa kontinualnim sistemima, klasifikuju kao pomoćna mehanizacija a na površinskim kopovima sa diskontinualnim sistemima, kao osnovna mehanizacija. Kako je u oba slučaja njihova primena neizostavna, važno je izvršiti adekvatnu analizu postojećih podataka, u cilju optimizacije izbora tipa hidrauličnog bagera u odnosu na uslove rada datog površinskog kopa. U radu su opisane različite višekriterijumske metode koje su korišćene za analizu hidrauličnih bagera. ...... tokovi preferencije: 1 ( ) ( , ) j j j m m a a a (3) 1 ( ) ( , ) j j m j m a a a (4) Kako bi se ostvarilo multikriterijumsko rangiranje uvodi se neto tok: ( ) ( ) ( ); 1, ... ,j j j ja a a j J (5) gde je: J – broj alternativa Alternativa ...
... .., ...,ij ij j n MAX MIN A v j K i v j K v v v v i i (20) ' '' 1 2| | , ,..., ...,ij ij j n MIN MAX A v j K i v j K v v v v i i (21) 2 1 ( ) n ij j j Si v v (22) 2 1 ( ) n ij j j Si v v ...
... nesaglasnosti (30): , 1,2, ..., 1,2, ..., ij j ijv w r i m j n (28) ks 1 ( , ) za C = j C jks sjn kj j j w j c a b x xw , (29) max ksmax za D = j D kj sjks ks sj kj j J kj sj v v j d x xv v (30) U sledećem koraku se određuju ...Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Filip Miletić, Ivan Janković. "Analiza primene višekriterijumskih metoda u optimizaciji izbora hidruličnih bagera na površinskim kopovima uglja" in Tehnika, Centre for Evaluation in Education and Science (CEON/CEES) (2019). https://doi.org/10.5937/tehnika1903369D
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On the distribution modulo 1 of the sum of powers of a Salem number
Dragan Stankov (2016)It is well known that the sequence of powers of a Salem number θ, modulo 1, is dense in the unit interval, but is not uniformly distributed. Generalizing a result of Dupain, we determine, explicitly, the repartition function of the sequence , where P is a polynomial with integer coefficients and θ is quartic. Also, we consider some examples to illustrate the method of determination.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. "On the distribution modulo 1 of the sum of powers of a Salem number" in Comptes rendus Mathematique (2016). https://doi.org/10.1016/j.crma.2016.03.012
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Geotehničko istraživanje terena za potrebe izgradnje mosta „Mihajlo Pupin“ u Zemunu
Luka Malenov (2024)Za potrebe izrade završnog rada na četvrtoj godini Rudarsko-geološkog fakulteta, studijskog programa Geotehnika, pod mentorstvom doc. dr Dušana Berisavljevića, analizirani su parametri dobijeni laboratorijskim ispitivanjima, kao i in-situ istraživanjima terena i ustanovljeni su geotehnički uslovi izgradnje mosta Zemun-Borča. Takođe, izvršeno je određivanje karakterističnih vrednosti geotehničkih parametara, koje se izučava u sklopu obaveznog predmeta u četvrtoj godini: Projektovanje inženjerskogeoloških radova. Detaljna geotehnička istraživanja terena, izveo je Saobraćajni institut CIP iz Beograda, za potrebe izrade Glavnog projekta mosta Mihajlo Pupin preko Dunava, ...... [f ] o [7:] [1 u » o o o | o o o |I o o 5 m | | . _ x s | L | . _ | _ = o | o | o j o j o j o j o o m | o | o | s w | o |M [ o | o j o j | o j o j o i a |j [ [H o I [ 9 18.60-18.95 19.00-19.45 | ____|a – 18.00-18.30 – –– |_______| 26.00-864 ...
... -307 / “ |j 31.50 al- g CL e alg OL 39.6 / 30.00 - -0 / ” · ciprž - A al pps p ar- N is - 5 AAA “ ' ' Ž | al-j ppćć SP 28.50 77 2680 al-jg: ĆL 23.40. ali p al-j g= CL? 35. TA —QN;{/ a PTpSM/ML { SM/ML će“a SP P SP al-j ppGp SP al-j pprs al-j pps 35.3 sP al-j ppćs SP SP - % ? + 250 - al-j gg CL : ...
... 203040 50 ı O8 FrAVIfe 06 2100 I 178.0 O c j-b 2 OČ CHICL KE : e CH/CL T SOOĆ HOIJ če OG 150 j-b GČCH/CL 10 20304050 KA 0 202000 X X - . H OĆS j-b GLLŽA ĆR/ĆL hh i j-bdt ĆH/CL j-bet.L ZO j-bači ČH/ĆL p e j-boči CH/CL Izveden CPT opit N' 0 GLUSSCH/CL j-bdLL CH/CL 44 A:Jb P I10·0 CHIČL / 58.10; ...Luka Malenov. Geotehničko istraživanje terena za potrebe izgradnje mosta „Mihajlo Pupin“ u Zemunu, 2024
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Geotehničko istraživanje terena za potrebe izgradnje mosta „Mihajlo Pupin“ u Zemunu
Luka Malenov (2024)Za potrebe izrade završnog rada na četvrtoj godini Rudarsko-geološkog fakulteta, studijskog programa Geotehnika, pod mentorstvom doc. dr Dušana Berisavljevića, analizirani su parametri dobijeni laboratorijskim ispitivanjima, kao i in-situ istraživanjima terena i ustanovljeni su geotehnički uslovi izgradnje mosta Zemun-Borča. Takođe, izvršeno je određivanje karakterističnih vrednosti geotehničkih parametara, koje se izučava u sklopu obaveznog predmeta u četvrtoj godini: Projektovanje inženjerskogeoloških radova. Detaljna geotehnička istraživanja terena, izveo je Saobraćajni institut CIP iz Beograda, za potrebe izrade Glavnog projekta mosta Mihajlo Pupin preko Dunava, ...... [f ] o [7:] [1 u » o o o | o o o |I o o 5 m | | . _ x s | L | . _ | _ = o | o | o j o j o j o j o o m | o | o | s w | o |M [ o | o j o j | o j o j o i a |j [ [H o I [ 9 18.60-18.95 19.00-19.45 | ____|a – 18.00-18.30 – –– |_______| 26.00-864 ...
... -307 / “ |j 31.50 al- g CL e alg OL 39.6 / 30.00 - -0 / ” · ciprž - A al pps p ar- N is - 5 AAA “ ' ' Ž | al-j ppćć SP 28.50 77 2680 al-jg: ĆL 23.40. ali p al-j g= CL? 35. TA —QN;{/ a PTpSM/ML { SM/ML će“a SP P SP al-j ppGp SP al-j pprs al-j pps 35.3 sP al-j ppćs SP SP - % ? + 250 - al-j gg CL : ...
... 203040 50 ı O8 FrAVIfe 06 2100 I 178.0 O c j-b 2 OČ CHICL KE : e CH/CL T SOOĆ HOIJ če OG 150 j-b GČCH/CL 10 20304050 KA 0 202000 X X - . H OĆS j-b GLLŽA ĆR/ĆL hh i j-bdt ĆH/CL j-bet.L ZO j-bači ČH/ĆL p e j-boči CH/CL Izveden CPT opit N' 0 GLUSSCH/CL j-bdLL CH/CL 44 A:Jb P I10·0 CHIČL / 58.10; ...Luka Malenov. Geotehničko istraživanje terena za potrebe izgradnje mosta „Mihajlo Pupin“ u Zemunu, 2024
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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 ...... indicators (j = 1 … 5). Defined A fuzzy set can be written as: - poor = (1/j=1, 0.25/j=2, 0/j=3, 0/j=4, 0/j=5); - adequate = (0.25/j=1, 1/j=2, 0.25/j=3, 0/j=4, 0/j=5); - average = (0/j=1, 0.25/j=2, 1/j=3, 0.25/j=4, 0/j=5); (7) - good = (0/j=1, 0/j=2, 0.25/j=3, 1/j=4, 0.25/j=5); - excellent ...
... excellent = (0/j=1, 0/j=2, 0/j=3, 0.25/j=4, 1/j=5); B. Questionnaire, statistical processing Employees operating with the bulldozers or connected to their maintenance and logistic are asked to field in questionnaire. Questionnaire have multiple choices for evaluation (linguistic variables) of each ...
... ns. Each combination represents one possible input for synthesis and evaluation of A. Ac = [μR j=1, …, n, μM j=1, …, n ,…, μS j=1, …, n] , for all c = 1 to C (2) If only values of µR,M,S j = 1, …, 5 ≠ 0 are taken into consideration, o outcomes (o = 1 to O, where O˂=C) are obtained. ...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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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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Organoselenium functionalized oxacycles as ligands in some trans-palladium(II) complexes: biological evaluation and interaction with small biomolecules
I. Raković, D. Ćoćić, O. Milošević-Djordjević, I. Radojević, M. N. Živanović, K. Virijević, J. Pavić, J. Tubić Vukajlović, A. Marković, J. S. Marjanović, M. D. Kostić, P. Čanović, A. Mijatović, V. M. Divac (2023)In this article, the biological evaluation and interaction of three selenium-based trans-palladium complexes (Pd–Se1, Pd–Se2, and Pd–Se3) with small biomolecules were performed. The UV–Vis kinetic studies on substitution reaction of synthesized complexes with selected biologically important N- and S-bonding ligands (LCys, GSH, L-Met, 50-GMP, L-His) has emphasized greater affinity of sulphur-based ligands for complex-binding, while the general order of the reactivity was L-Cys > GSH > L-Met > 50-GMP > L-His. The complex reactivity toward small biomolecules is influenced ...I. Raković, D. Ćoćić, O. Milošević-Djordjević, I. Radojević, M. N. Živanović, K. Virijević, J. Pavić, J. Tubić Vukajlović, A. Marković, J. S. Marjanović, M. D. Kostić, P. Čanović, A. Mijatović, V. M. Divac. "Organoselenium functionalized oxacycles as ligands in some trans-palladium(II) complexes: biological evaluation and interaction with small biomolecules" in Journal of Coordination Chemistry, Informa UK Limited (2023). https://doi.org/10.1080/00958972.2023.2256934
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Photocatalytic Activity of the V2O5 Catalyst toward Selected Pharmaceuticals and Their Mixture: Influence of the Molecular Structure on the Efficiency of the Process
Sanja J. Armaković, Aleksandra Jovanoski Kostić, Andrijana Bilić, Maria M. Savanović, Nataša Tomić, Aleksandar Kremenović, Maja Šćepanović, Mirjana Grujić-Brojčin, Jovana Ćirković, Stevan Armaković (2023)Due to the inability of conventional wastewater treatment procedures to remove organic pharmaceutical pollutants, active pharmaceutical components remain in wastewater and even reach tap water. In terms of pharmaceutical pollutants, the scientific community focuses on -blockers due to their extensive (over)usage and moderately high solubility. In this study, the photocatalytic activity of V2O5 was investigated through the degradation of nadolol (NAD), pindolol (PIN), metoprolol (MET), and their mixture under ultraviolet (UV) irradiation in water. For the preparation of V2O5, facile ...DFT analysis, metoprolol, nadolol, nanomaterial characterization, photocatalysis, pindolol, β-blocker... basis set for atoms K through Zn. J. Chem. Phys. 1998, 109, 1223—1229. CrossRef] Rassolov, V.; Ratner, M.; Pople, J.; Redfern, P.; Curtiss, L. 6-31G* basis set for third-row atoms. J. Comput. Chem. 2001, 22, 976–984. CrossRef] Ditchfield, R.; Hehre, W.; Pople, J. Self-Consistent Molecular-Orbital ...
... and diazo dyes. Surf. Interfaces 2020, 19, 100502. [CrossRef] Sun, J.; Li, X.; Zhao, Q.; Ke,J.; Zhang, D. Novel V2O5/BiVO4/TiO2 nanocomposites with high visible-light-induced photocatalytic activity for the degradation of toluene. J. Phys. Chem. C 2014, 118, 10113—10121. [CrossRef] Fu, X.; Tang, W ...
... theory for the calculation of excitation energjies of large molecules. J. Comput. Chem. 2016, 37, 1425-1441. [CrossRef] Bochevarov, A.; Harder, E.; Hughes, T.; Greenwood, J.; Braden, D.; Philipp, D.; Rinaldo, D.; Halls, M.; Zhang, J.; Friesner, R. Jaguar: A high-performance quantum chemistry software ...Sanja J. Armaković, Aleksandra Jovanoski Kostić, Andrijana Bilić, Maria M. Savanović, Nataša Tomić, Aleksandar Kremenović, Maja Šćepanović, Mirjana Grujić-Brojčin, Jovana Ćirković, Stevan Armaković. "Photocatalytic Activity of the V2O5 Catalyst toward Selected Pharmaceuticals and Their Mixture: Influence of the Molecular Structure on the Efficiency of the Process" in Molecules, MDPI AG (2023). https://doi.org/10.3390/molecules28020655
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Insights into dike nucleation and eruption dynamics from high-resolution seismic imaging of magmatic system at the East Pacific Rise
Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Mladen R. Nedimović, Juan Pablo Canales, Hélène D. Carton, John C. Mutter, Javier Escartín (2023)Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Mladen R. Nedimović, Juan Pablo Canales, Hélène D. Carton, John C. Mutter, Javier Escartín. "Insights into dike nucleation and eruption dynamics from high-resolution seismic imaging of magmatic system at the East Pacific Rise" in Science Advances, American Association for the Advancement of Science (AAAS) (2023). https://doi.org/10.1126/sciadv.adi2698
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BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties
Marija Šuljagić, Ivan Petronijević, Miljana M. Mirković, Aleksandar Kremenović, Adis Džunuzović, Vladimir B. Pavlović, Aleksandra Kalezić-Glišović, Ljubica Andjelković (2023)To investigate the influence of spinel structure and sintering temperature on the functional properties of BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1), NiFe2O4, ZnFe2O4, and Ni0.5Zn0.5Fe2O4 were in situ prepared by thermal decomposition onto BaTiO3 surface from acetylacetonate precursors. As-prepared powders were additionally sintered at 1150 °C and 1300 °C. X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS) were used for the detailed examination of phase composition and morphology. The magnetic, dielectric, and ...ferroelectric, dielectric properties, magnetic properties, titanate/ferrite composites, phase composition... maximum coupling, in multiferroic magnetoelectric composites by material design. Sci. Rep. 2018, 8, 4866. [CrossRef] Feng, M.; Wang, J.; Hu, J.-M.; Wang, J.; Ma, J.; Li, H.-B.; Shen, Y.; Lin, Y.-H.; Chen, 1.-Q.; Nan, C.-W. Optimizing, direct magnetoelectric coupling, in Pb(Zr,Ti)Os/Ni multiferroic ...
... Petkov, V.; Priya, S. Room-temperature magnetoelectric coupling, in single-phase BaTiOs-BiFeOy system. J. Appl. Phys. 2013, 113, 144101. [CrossRef] Patil, D.; Kim, J.-H.; Chai, Y.S.; Nam, J.-H.; Cho, J.-H.; Kim, B.-I.; Kim, K.H. Large Longitudinal Magnetoelectric Coupling, in NiFe>»Oa-BaTiOy Laminates ...
... 2020, 10, 2072. [CrossRet] 8. _ Mao, Q.; Wu, J.; Hu, Z.; Xu, Y.; Du, Y.; Hao, Y.; Guan, M.; Wang, C.; Wang, Z.; Zhou, Z.; et al. Magnetoelectric devices based on magpnetoelectric bulk composites. J. Mater. Chem. C 2021, 9, 5594–5614. [CrossRef] 9. · Hu,J.-M.; Duan, C.-G.; Nan, C.-W.; Chen, L.-Q. U ...Marija Šuljagić, Ivan Petronijević, Miljana M. Mirković, Aleksandar Kremenović, Adis Džunuzović, Vladimir B. Pavlović, Aleksandra Kalezić-Glišović, Ljubica Andjelković. "BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties" in Inorganics, MDPI AG (2023). https://doi.org/10.3390/inorganics11020051
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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
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Optimizacija i planiranje površinskih kopova stohastičkim modelima
Dejan R. Stevanović (2015-05-29)Savremeno rudarstvo izloženo je stalnom trendu pogoršanja uslova poslovanja.Mogućnost ostvarenja ekonomskih i drugih ciljeva rudarskog projektakompromitovana je stalnim pogoršanjem kvaliteta ležišta na kojima se vršieksploatacija, kao i značajnoj dozi neizvesnosti povezane sa geološkim,ekonomskim i tehničkim parametrima proizvodnje. U ovako kompleksnimuslovima poslovanja, matematički modeli sposobni da odgovore značajnimizazovima, odnosno ponude optimalna rešenja kojima se garantuje maksimalnoispunjenje projektovanih ciljeva, nameću se kao neophodnost.Trenutni, konvencionalni pristup optimizaciji i planiranju površinskih kopovazasniva se na algoritmima, razvijenim sredinom prošlog veka čije je opšteobeležje deterministički ...površinski kop, planiranje, optimizacija, stohastički modeli, kontrola kvaliteta uglja, neizvesnost.... j 1 8 j 6 j j j j j j 5 5 j j j j 3 j 4 7 j j 5 8 j 2 4 8 3 1 j 1 3 3 7 j j j 7 4 3 4 6 7 1 4 j 3 j j j j j j 2 4 8 3 1 j 1 3 3 7 j j j 4 j j 1 6 j j j j j j 5 j j 4 4 j 1 2 6 j 5 5 1 j j j j j j 8 j 1 6 j j j j j j 5 j 4 4 5 j j j 3 6 j 2 j 1 j j 2 j j 1 5 8 2 2 7 6 j j 8 8 j j j j 1 1 1 1 1 1 1 ...
... 3 1 j 2 j 2 1 4 j 8 7 4 8 j 1 2 j j j j j j j j j j j 8 2 3 1 j 2 j 2 1 4 j 3 4 j 7 5 j 1 8 5 j 6 6 j j 5 7 j 2 4 j j j 4 6 6 j 7 j j j j j j 5 j 1 8 5 j 6 6 j j 5 2 j j 3 3 8 j 4 2 6 6 4 j 7 2 j j j j j 5 7 3 2 2 j 5 6 j j j j j 3 8 j 4 2 6 6 4 j 7 2 j 7 8 2 j 5 5 j j j j 3 j 4 7 j 2 1 1 6 j j j j ...
... stopa: 10% j j j j 3 6 j 2 j 1 j j 6 1 j 1 7 6 8 1 j 4 7 j 1 6 j 8 j j j 4 5 7 8 4 2 8 j 3 j j j j j j 6 8 1 j 4 7 j 1 6 j 2 j 7 8 j 4 6 j 1 4 8 j 7 5 8 j 1 8 j 3 j 6 7 1 8 5 j 1 5 j j j j j 4 6 j 1 4 8 j 7 5 8 j 7 j j 8 j 5 5 j j 3 4 j 1 5 6 j j 6 8 j 4 j j j 3 2 j j j j j j j j 5 5 j j 3 4 j 1 5 6 8 ...Dejan R. Stevanović. "Optimizacija i planiranje površinskih kopova stohastičkim modelima" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-05-29)
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Optimizacija i planiranje površinskih kopova stohastičkim modelima
Dejan R. Stevanović (2015-05-29)Savremeno rudarstvo izloženo je stalnom trendu pogoršanja uslova poslovanja.Mogućnost ostvarenja ekonomskih i drugih ciljeva rudarskog projektakompromitovana je stalnim pogoršanjem kvaliteta ležišta na kojima se vršieksploatacija, kao i značajnoj dozi neizvesnosti povezane sa geološkim,ekonomskim i tehničkim parametrima proizvodnje. U ovako kompleksnimuslovima poslovanja, matematički modeli sposobni da odgovore značajnimizazovima, odnosno ponude optimalna rešenja kojima se garantuje maksimalnoispunjenje projektovanih ciljeva, nameću se kao neophodnost.Trenutni, konvencionalni pristup optimizaciji i planiranju površinskih kopovazasniva se na algoritmima, razvijenim sredinom prošlog veka čije je opšteobeležje deterministički ...površinski kop, planiranje, optimizacija, stohastički modeli, kontrola kvaliteta uglja, neizvesnost.... j 1 8 j 6 j j j j j j 5 5 j j j j 3 j 4 7 j j 5 8 j 2 4 8 3 1 j 1 3 3 7 j j j 7 4 3 4 6 7 1 4 j 3 j j j j j j 2 4 8 3 1 j 1 3 3 7 j j j 4 j j 1 6 j j j j j j 5 j j 4 4 j 1 2 6 j 5 5 1 j j j j j j 8 j 1 6 j j j j j j 5 j 4 4 5 j j j 3 6 j 2 j 1 j j 2 j j 1 5 8 2 2 7 6 j j 8 8 j j j j 1 1 1 1 1 1 1 ...
... 3 1 j 2 j 2 1 4 j 8 7 4 8 j 1 2 j j j j j j j j j j j 8 2 3 1 j 2 j 2 1 4 j 3 4 j 7 5 j 1 8 5 j 6 6 j j 5 7 j 2 4 j j j 4 6 6 j 7 j j j j j j 5 j 1 8 5 j 6 6 j j 5 2 j j 3 3 8 j 4 2 6 6 4 j 7 2 j j j j j 5 7 3 2 2 j 5 6 j j j j j 3 8 j 4 2 6 6 4 j 7 2 j 7 8 2 j 5 5 j j j j 3 j 4 7 j 2 1 1 6 j j j j ...
... stopa: 10% j j j j 3 6 j 2 j 1 j j 6 1 j 1 7 6 8 1 j 4 7 j 1 6 j 8 j j j 4 5 7 8 4 2 8 j 3 j j j j j j 6 8 1 j 4 7 j 1 6 j 2 j 7 8 j 4 6 j 1 4 8 j 7 5 8 j 1 8 j 3 j 6 7 1 8 5 j 1 5 j j j j j 4 6 j 1 4 8 j 7 5 8 j 7 j j 8 j 5 5 j j 3 4 j 1 5 6 j j 6 8 j 4 j j j 3 2 j j j j j j j j 5 5 j j 3 4 j 1 5 6 8 ...Dejan R. Stevanović. "Optimizacija i planiranje površinskih kopova stohastičkim modelima" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-05-29)
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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)