Претрага
814 items
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Properties of fly ash and slag from the power plants
This paper describes the physical, chemical and mineral properties of ash and slag, which were taken from thermal power plants Nikola Tesla A, Nikola Tesla B, Kostolac A and Kostolac B. The knowledge of the mineralogical material composition is important because the type of minerals directly determines the properties of the fly ash and slag and their possible application. Laboratory tests showed that ash and slag samples consist of the following minerals: amorphous materials, quartz, feldspar, mullite, melilite, cristobalite, ...fly ash, slag, physical composition, chemical composition, mineral composition, X-ray diffraction method... mass (%) NT A – m 58 16 10 5 5 3 3 – – 100 NT A – j 66 17 9 3 2 2 – – – 99 NT B – m 50 17 12 6 4 7 4 – – 100 NT B – j 50 10 14 8 6 7 3 – 2 100 KO A – m 55 7 23 7 – – 4 4 – 100 KO A – j 55 10 12 3 2 10 1 7 – 100 KO B – m 55 19 13 5 – – 5 3 – 100 KO B – j 50 6 15 2 2 10 5 10 – 100 NT A (s) 56 21 11 3 – – ...
... 11 2.05-2.15 11.88 NT A – j 0.29 0.22-0.38 22.67 16.0-30.0 2.09 2.08-2.10 12.76 NT B – m 0.26 0.08-0.71 44.67 35.0-51.0 2.13 2.08-2.20 11.53 NT B – j 0.20 0.15-0.28 51.33 46.0-57.0 2.10 2.05-2.16 13.15 KO A – m 0.17 0.10-0.23 17.33 15.0-19.0 2.08 2.04-2.11 11.02 KO A – j 0.41 0.37-0.47 65.00 48.0-81 ...
... 85 0.33 0.57 1.05 NT A – j 7.2 51.43 22.01 6.03 1.16 2.83 0.54 0.21 0.43 1.16 NT B – m 2.58 55.38 22.57 5.46 8.30 2.87 0.45 0.18 0.45 1.12 NT B – j 2.11 51.88 22.49 6.61 10.44 3.28 0.66 0.26 0.58 1.23 KO A – m 2.21 51.96 23.22 9.82 7.80 2.62 0.33 0.13 0.44 0.77 KO A – j 4.18 44.55 20.80 11.23 11 ...Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić. "Properties of fly ash and slag from the power plants" in Geologia Croatica, Zagreb : Croatian Geological Survey (2016). https://doi.org/10.4154/gc.2016.26
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Примена беспилотних летилица при месечном снимању радова на површинском копу ,,Дрмно”
Теодора Унгурјановић (2024)Циљ истраживања је да се оцени ефикасност и прецизност беспилотних летелица у прикупљању података, напретку радова и употребљивост у оптимизацији операција на копу. Коришћени су напредни сензори и софтвери за обраду података како би се омогућила детаљна анализа терена и обим ископаног материјала. Овај рад истражује различите методе снимања терена, укључујући ласерско скенирање и фотограметријско снимање терена. Такође, детаљно се анализира употреба беспилотне летелице модела Aibot X6 V2 за месечно снимање радова на површинском копу ,,Дрмно“. Прикупљени подаци су обрађени помоћу ...... KJIaCHuHe MeTOJIĆ KaO H MeTOJIe CHHM4aFba OCCIHJIOTHOM JIČTeJIHILOM. BecrHJIOTHOM JICTCJIHIIOM IIOKpHBeHa jJe 3OHa Jy)KHO OJL TpaHcnHopTHHXx Tpaka J-II-i a J-IH-2 (IV H I cHcreM) H yrJbeEHH CHCTCM. Ha repeny je OMmo pacnopeDeHo 20 KOHTpOJHHX MapKepa, a yKyHHa TIOBpIHHHa KOJa je CHHMaHa H3HocHua je ...
... KpeHpabba MeceuHHX IIIaHOBa 32 IIpOH3BOJUPy TIc Cy HeOIIXOJIHa u npyra nepHo,mMuHa cHHMaba OJUaaraminrra. Tako je Ha InpHMMep BHCHHCKH OJIOK J TpaHcnopTHe TpaKe J-III-6 OMO CHHMJbeH OCCIHIHJIOTHOM JIČTCJIHILOM, IIpH MeMy je Ha TepeHy HOCTaBJDGHO Š KOHTpOJHMX MapKepa. IIoBpmmHa oOyxBaheHa CHHMaMbOM ...
... AyTOpcTB0. /J[o3B0JbaBaTe yMHO)KaBakbe, JHCTpHOyinHjy H jaBHO caorTaBahbc JicJIa, H ripepajie, aKO Ce HaBCJIĆ HMC ayTOpa Ha HauHH OJIpebeH oJt crpaHe ayropa H naBaoma JIHIIeHIIC, uaK H y KOMECPpIIHJaJIHe CBpXe. OBo Je Hajcn0o00/iHHja OJ CBHX JIHILČHIH. AyTOpcTBO — HeKOM6epIHjaJIHO. J|O3BOJbaBaTc ...Теодора Унгурјановић. Примена беспилотних летилица при месечном снимању радова на површинском копу ,,Дрмно”, 2024
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Adsorption and Polymerization of Aniline on Cu(II)-Montmorillonite: Vibrational Spectroscopy and ab Initio Calculation
Batch adsorption experiments in the presence of oxygen were performed to study the interlayer reactions of aniline on Cu(II)-montmorillonite in aqueous solutions. At concentrations below a critical value of CC ) 2.6 mmol dm-3 only a colored Cu(II)-aniline complex is formed, characterized by a stability constant of log(Kassoc/dm3 mol-1) ) 1.5. At concentrations beyond Cc aniline polymerizes yielding a dark brown product, which is identified by two vibrational spectroscopy techniques, attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy and ...M. Ilić, E. Koglin, A. Pohlmeier, H. D. Narres, M. J. Schwuger. "Adsorption and Polymerization of Aniline on Cu(II)-Montmorillonite: Vibrational Spectroscopy and ab Initio Calculation" in Langmuir (2000). https://doi.org/ 10.1021/la000534d
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An optimal sixteenth order family of methods for solving nonlinear equations and their basins of attraction
Dejan Ćebić, Nebojša Ralević, Marina Marčeta. "An optimal sixteenth order family of methods for solving nonlinear equations and their basins of attraction" in Mathematical Communications (2020)
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Asbestos-Based Pottery from Corsica: The First Fiber-Reinforced Ceramic Matrix Composite
Asbestos-containing pottery shards collected in the northeast of Corsica (Cap Corse) and dating from the 19th century, or earlier, have been analyzed by SEM-EDS, XRPD, FTIR and Raman microspectroscopy. Blue (crocidolite) and white (chrysotile) asbestos fiber bundles are observed in cross-sections. Most of the asbestos is partly or totally dehydroxylated, and some transformation to forsterite is observed to occur, indicative of a firing above 800 C. Examination of freshly fractured pieces shows a nonbrittle fracture with fiber pull-out, consistent with ...... 1500- 8 š ž Fi 1000- E 500- ok——— | Tremolite, 01-086-1319. j | i I\\\„\M ML _L ı . j ıl | I[SWVi | THE - Diopside, 00-017-0318. j L | l a · || ı - Actinolite, heated, 01-089-5367 i ii | uartz, 00-001-0649 j ı ı ı | 3 Talc 1A, 01-082-8123 i dı ı a |l ' 10 20 30 40 50 60 70 ...
... ion of chrysotile-asbestos containing, materials (ACM). Eur. J. Mineral. 2010, 22, 535–546. [CrossRef] Ristic, M.; Czako-Nagy, L.; Music, S.; Vertes, A. Spectroscopic characterization of chrysotile asbestos from different regions. J. Mol. Struct. 2011, 993, 120–126. [CrossRef] Trittschack, R ...
... thermal decomposition by heat treatment. Econ. Environ. Geol. 2016, 49, 77–88. [CrossRef] Rooney, J.; Tarling, M.; Smith, S.; Gordon, K. Sub-micron raman spectroscopy mapping,of serpentinite fault rocks. J. Raman Spectrosc. 2018, 49, 279-286. [CrossRef] Dodony, I.; Buseck, P.R. Serpentines close-up ...Philippe Colomban, Aleksandar Kremenović. "Asbestos-Based Pottery from Corsica: The First Fiber-Reinforced Ceramic Matrix Composite" in Materials, MDPI AG (2020). https://doi.org/10.3390/ma13163597
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English for Geology Students. 1
Lidija Beko (2023)... otherwise without the prior written permission of the author. Mom bratu Milanu Table of contents 'Predgovoybo .. . OJ JAJNNJ.I....OJ0...j. .EOL .. J..JOJOL BMR a .. 9 •Unit1l• MINERALS Partl MINERAL EVOLUTION.............vtea e 12 Pre-solar minerals..................a a a oa 14 Vocabulary ...
... ROCKS.... . a v MM . .O . M, 130 'Vocabulary....e.. ...R ... a o . N i a y- k 133 Reading Comprehension..........ii . 134 Part 308 VOLCANOES|.J. „v „Og J JNR 31 . ov eoPeMaMO. • MM cı + - + ) ttake 136 Vocabulary........k.coac a dd0 dd d a d 2 MNMBA o a 139 Reading Comprehension...........toe. 140 ...
... through Myths............i.i a 97 • Unit4• CONTINENTAL DRIFT WEGENER'S HYPOTHESIS ...........tttoe 100 Mocabulary. .rA .. dk r dj. - . d. o - -j= -- - - OJ 102 Reading Comprehension........ ....i.. 103 'TREGTONIG PLATESL.L OEOA K . O OR . JČOA OMNJ-K. . - .POO I 104 Vocabulary......... ...Lidija Beko. English for Geology Students. 1, Belgrade : The Faculty of Mining and Geology, 2023
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Pre-failure deformation monitoring as rockfall prediction tool
... hazard management. Eng. Geol. 195 93–103 [5] De Vilder S J, Rosser N J and Brain M J 2017 Forensic analysis of rockfall scars. Geomorphology 295 202–214 [6] Janeras M, Jara J A, Royán M J, Vilaplana J M, Aguasca A, Fàbregas X, Gili J and Buxó P 2017 Multi-technique approach to rockfall monitoring ...
... Geoph. res. 112 F04014. [3] Abellán A, Calvet J, Vilaplana J M and Blanchard J 2010 Detection and spatial prediction of rockfalls by means of terrestrial laser scanner monitoring. Geomorphology 119 162–171 [4] Kromer R A, Hutchinson D J, Lato M J, Gauthier D and Edwards T 2015 Identifying rock ...Miloš Marjanović, Biljana Abolmasov, Zoran Berisavljević, Marko Pejić, Petko Vranić. "Pre-failure deformation monitoring as rockfall prediction tool" in IOP Conference Series: Earth and Environmental Science, IOP Publishing (2021). https://doi.org/10.1088/1755-1315/833/1/012197
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Late Triassic radiolarians from the Grivska formation, internal Dinarides, SW Serbia
Paleontology, Stratigraphy, Economic Geology, Geochemistry and Petrology, Geology, Geophysics, Geotechnical Engineering and Engineering Geology... VozAR, J., EBNER, E, VOZAROVA, A., HAASs, ]}., KovAcs, S., SUDAR, M., BIELIK, M. & PER6, Cs. (Eds.). Variscan and Alpine terranes of the Circum-Pannonian Region, 87–156, Geological Institute, SAS, Bratislava. KovAcs, S.*, SUDAR, M., GRADINARU, E., GAWLICK, H.-J., KARAMATA, S., HAAS, J., PER6 ...
... 359-368. GAWLICK, H.-J., MISSONI, S., SUZUKI, H., SUDAR, M.N., LEIN, R., JOVANoVIĆ, D. 2016. Triassic radiolarite and carbonate components from the Jurassic ophiolitic mćlange (Dinaridic Ophiolite Belt). Swiss Journal of Geosciences, 109, 3, 473–494. GAWLICK, H.-J., SUDAR, M.N., MIssoNi, ...
... Geological Studies (Zlatibor, Serbia 2017). Journal of Alpine Geology, 55: 1–167. KovAcs, S.f, SUDAR, M., KARAMATA, S., HAAs, J., PER0, CS., GRADINARU, E., GAWLICK, H.-J., GAETANI, M., MELLO, ]., POLAK, M., ALJINOVIĆ, D., OGORELEC, B., KOLAR-JURKOVŠEK, T., JURKOV- ŠEK, B. & BUsER, St. 2010. Triassic ...Nikita Bragin, Liubov Bragina, Nevenka Đerić, Nataša Gerzina-Spajić. "Late Triassic radiolarians from the Grivska formation, internal Dinarides, SW Serbia" in Geološki anali Balkanskoga poluostrva (2019). https://doi.org/10.2298/GABP1901017B
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The use of biological markers in determination of origin and type of organic matter in the Tisza river sediments
Snežana Štrbac, Gordana Gajica, Aleksandra Šajnović, Nebojša Vasić, Ksenija Stojanović, Branimir Jovančićević (2013)The objective of the study was to determine the origin and type of organic matter (OM) of the Tisza recent sediments along the distance of 153 km through the territory of Serbia. For this purpose group organic-geochemical parameters and biomarker compositions were used. All samples contain approximately same amount of OM, which was deposited under uniform, slightly reducing conditions. Based on the distribution of n-alkanes, the origin and type of OM could not be precisely estimated. However, n-alkane patterns ...... Snowdon, Am. Assoc. Petrol. Geol. Bull. 83 (1999) 1426 17. J. M. Moldowan, W. K. Seifert, E. J. Gallegos, Am. Assoc. Petrol. Geol. Bull. 69 (1985) 1255 18. J. S. Sinninghe Damsté, F. Kenig, M. P. Koopmans, J. Köster, S. Schouten, J. M. Hayes, J. W. de Leeuw, Geochim. Cosmochim. Acta 59 (1995) 1895 ...
... Energ. Fuels 24 (2010) 4357 10. O. Sonibare, H. Alimi, D. Jarvie, O. A. Ehinola, J. Petrol. Sci. Eng. 61 (2008) 99 11. H. I. Petersen, B. Holland, H. P. Nytoft, A. Cho, S. Piasecki, J. de la Cruz, J. H. Cornec, J. Petrol. Geol. 35 (2012) 127 12. R. P. Philp, Fossil Fuel Biomarkers. Applications ...
... Bechtel, R. F. Sachsenhofer, I. Kolcon, R. Gratzer, A. Otto, W. Püttmann, Int. J. Coal Geol. 51 (2002) 31 7. I. R. Kaplan, Y. Galperin, S. Lu, R. Lee, Org. Geochem. 27 (1997) 289 8. Z. Wang, M. Fingas, D. S. Page, J. Chromatogr., A 843 (1999) 369 9. K. Stojanović, A. Šajnović, T. Sabo, A. Golovko ...Snežana Štrbac, Gordana Gajica, Aleksandra Šajnović, Nebojša Vasić, Ksenija Stojanović, Branimir Jovančićević. "The use of biological markers in determination of origin and type of organic matter in the Tisza river sediments" in Journal of Serbian Chemical Society, Beograd : Srpsko hemijsko društvo (2013). https://doi.org/10.2298/JSC130614087S
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Одређивање оптималне производње дубинске пумпе на клипним шипкама
Небојша Савић (2024)Дужи временски период током историје производње нафте, дубинске пумпе на клипним шипкама су први и у многим случајевима једини избор када су у питању механичке методе експлоатације. Правилан одабир сваког појединачног елемента система омогућава оптимизацију која са собом повлачи бенефите у виду повећавања ефикасности и смањења трошкова. Тренутно примењени систем дубинских пумпи на клипним шипкама на лежишту „Н“ обезбеђује стабилну производњу и реализацију годишњих планова производње без већих проблема. У овом раду је приказан начин оптимизације производње дубинским пумпама ...... Beh OcTBapyje H HeKe TeXHHUKC rpoOneMe. IIpH cHJ1a3HOM XOJLy IIOTHCHH BCHTHJI Ce He OTBapa Ha cTapTy, IIpH XOJUy KHMHIa Ka JOJIĆ J(OJIa3H JIO 3HaTHOr OJUIaraFba. J[OBOJBHO BCJIHKC KOJIHUHHC TaCHHX 20 MeXypa pe3ynrHpajy raCHHM 3aKJbyuaBaMbeM IIyMIIe T3B. „Gas lock“. Kana nobe no OBC HOJaBeC ...
... Dynamornster Cards. 'Gearbox Torque Pkts 9000 //7 9000 B000) *\_/ 80000 """"""""""""""""""""" j r a; -r rugaj 7000 7000 2000 [ uuJ 800 3 a z 1ODG = 5000 500 H Downirake = FI H k i J 40000 š Pl EOM ELUJ 300 z i /_\ -20000 . eevdikai 200 M z i a 30000 10000 10000 / \ Šl GretorRareg ...
... 1. PanHH HHKJIyC JIyOHHCKĆC ITyMIHE...aaaaaaaaaaaaaaaaaaaa e aaeaaaaaaaaaaaeaaenatet 5 3. IIOJI3EMHA OTIPEMA 3A JIVEMHCKO IIVMITIABMĐE ... 7 3.1. J{yOBHHcka ITyMITa ly anaaaaaaananaananananaeanaeaeaeaeeaeaeaeaaeaeaeagaNeaeaaaeet 7 3.1.1. K-JtHri JIyOHHCKĆ IIyMITE ın eaaeaaaaaaaeaaaaaataaeaeetekaeaatet ...Небојша Савић. Одређивање оптималне производње дубинске пумпе на клипним шипкама, 2024
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Tectonic evolution of the Circum-Moesian orocline of the Carpatho-Balkanides: Paleomagnetic constraints
Emő Márton, Vesna Cvetkov, Miodrag Banješević, Gábor Imre, Aleksandar Pačevski. "Tectonic evolution of the Circum-Moesian orocline of the Carpatho-Balkanides: Paleomagnetic constraints" in Journal of Geodynamics, Elsevier BV (2024). https://doi.org/10.1016/j.jog.2024.102058
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Development of integrated fuzzy model for mine management optimization
Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić (2023)... all MŠ„» J = 1,2,...,m are triangular fuzzy numbers. Then, taking into account the membership function of the triangular fuzzy number, the fuzzy synthetic extent is calculated using; the following; equation: m i n m -1 m m m 1 1 1 S -Ž MLe|.2.MA, |Ž,D-> 552 d|| _—R — L — j=1 i=1 j=1 jel jcl ...
... CHANG D. Y. (1996) Applications of the extent analysis method on fuzzy AHP, Rur. J. Oper. Res., 95, 649 655. “} ZnU K., Y. JING, D. CHANG (1999) A discussion on extent analysis method and applications of fuzzy AHP, Eur. J. Oper. Res., 116, 450 456. TOLGA FE., M. DEMIRCAN, C. KAHRAMAN (2005) Operating ...
... POLOMČIĆ, J. RATKOVIĆ (2017) Multi-criteria decision analysis for he purposes of groundwater control system design, Water Resources Management, 81(15), 4759—4784, DOI: 10.1007/s11269-017-1777-4, 2017. 1I SAAry T.L. (1990) How to make a decision: The analytic hierarchy process, Eur. J. Oper. Res ...Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić. "Development of integrated fuzzy model for mine management optimization" in Comptes rendus de l'Académie Bulgare des Sciences (2023)
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Middle Jurassic terebratulide brachiopods from the Jordan Valley (northwestern Jordan)
U radu je izvršena revizija i detaljan opis srednjojurskih brahiopoda Jordanske doline, a takodje su izdvojeni i novi taksoni. Sa profila Arda iz gornjeg bata (Hamam formacija) i donjeg keloveja (Muganija formacija) odredjeni su novi rod i vrsta Jordanithyris ardainensis. Iz gornjeg bata Hamam formacije (krečnjaci, dolomiti, peščari i laporci) izdvojena je vrsta Ptyctothyris quillyensis. Zajednica koju čine Arabatia bihinensis, Ectyphoria sinaiensis, Ptyctothyris quillyensis, Dorsoplicathyris dorsoplicata i Tubithyris jurayfahiensis potiče iz donjokelovejskih krečnjaka sa proslojcima laporaca Muganija formacije. Brahiopodi ...Howard R. Feldman, Barbara V. Radulović, Vladan J. Radulović, Fayez Ahmadc. "Middle Jurassic terebratulide brachiopods from the Jordan Valley (northwestern Jordan)" in Historical Biology, Taylor & Francis (2021). https://doi.org/10.1080/08912963.2019.1625347
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Fuzzy expert analysis of the severity of mining machinery failure
Mining machinery failure is almost an everyday occurrence. Usually the failures bare certain consequences, which require additional financial costs to repair and restore the system to its operational state. The consequences are viewed through negative and damaging effects a failure has on the machine, health and safety of the employees, work environment, and on the environment. The removal of the consequences of the failure requires additional financial investment, which has a negative impact on the company’s business. In order ...Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković. "Fuzzy expert analysis of the severity of mining machinery failure" in Applied Soft Computing, Elsevier BV (2020). https://doi.org/10.1016/j.asoc.2020.106459
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Application of a Method for Intelligent Multi-Criteria Analysis of the Environmental Impact of Tailing Ponds in Northern Kosovo and Metohija
Gordana Milentijević, Blagoje Nedeljković, Milena Lekić, Zoran Nikić, Ivica Ristović, Jelena Đokić (2016)... PROMETHEE involves preference streams: φ+ j ( aj ) = ∑ j m=1ΠP ( aj, am ) positive stream φ− j ( aj ) = ∑ j m=1ΠP ( aj, am ) negative stream In general, the higher φ+ j , Alternative aj dominates over the other alternatives in the. The higher φ− j , than the other alternatives, however, ...
... system of alternatives. As a measure for multi-criteria evaluation, the PROMETHEE II involves absolute flow: φj ( aj ) = φ+ j ( aj ) −φ− j ( aj ) ; j = 1, . . . , J where j is the number of alternative. In the analysis conducted in this paper for the PROMETHEE method, the commercial software Visual ...
... Saaty include summarizing the comparison results’ matrix rows and normalization of the obtained sums, according to the Equation (2): n ∑ j=1 Wi Wj = Wi ( n ∑ j=1 1 Wj ) i = 1, . . . , n (2) The errors in the process of adding values to the elements in coupling comparison are determined by consistency ...Gordana Milentijević, Blagoje Nedeljković, Milena Lekić, Zoran Nikić, Ivica Ristović, Jelena Đokić. "Application of a Method for Intelligent Multi-Criteria Analysis of the Environmental Impact of Tailing Ponds in Northern Kosovo and Metohija" in Energies, MDPI AG (2016). https://doi.org/10.3390/en9110935
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A tool for identifying the criticality in the disordered systems with metastable dynamics
Svetislav Mijatović, Dragutin Jovković, Sanja Janićević, Stefan Graovac, Đorđe Spasojević. "A tool for identifying the criticality in the disordered systems with metastable dynamics" in Physica A: Statistical Mechanics and its Applications, Elsevier BV (2021). https://doi.org/10.1016/j.physa.2021.125883
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Callovian (Middle Jurassic) terebratulide brachiopods from the Jordan Valley (northwestern Jordan)
U radu je izvršena revizija srednjojurskih terebratulidskih brahiopoda Jordanske doilne, a takodje su spisku predhodne faune dodati i novi taksoni. Sa profila Tel el Dahab, iz kelovejskih stena (Muganija formacija) odredjeni su novi taksoni terebratulida: Kutchithyris simoni sp. nov. i Trigonithyris wilsoni sp. nov, koji su ovom prilikom opisani. Takodje, po prvi put se iz Jordana pominju i tri terebratulidske vrste: Bihenithyris barringtoni, Ptyctothyris daghaniensis i Sphriganaria cardioides koje su nadjene zajedno sa Bihenithyris weiri, a koje imaju šire ...Howard R. Feldman, Barbara V. Radulović, Vladan J. Radulović, Fayez Ahmad. "Callovian (Middle Jurassic) terebratulide brachiopods from the Jordan Valley (northwestern Jordan)" in Historical Biology, Informa UK Limited (2021). https://doi.org/10.1080/08912963.2019.1677643
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Hibridni sistem za planiranje i analizu ventilacije rudnika
... Svi ogranci (i,j) zadovoljavaju uslov i<j, gde je i – početni čvor, a j – krajnji čvor. Procedura računanja unapred Korak 2. Usvaja se p1 = 0. Korak 3. Izračunava se pj za j = 2, 3 ...nn kao maksimalna vrednost od ijoii hpp += za sve ogranke (i,j) čiji je zadnji čvor j. Korak 4. Računa ...
... ' oj 2 oj 2 j i a oj QRQ)mR(p = ρ ρ =∆ , (7.18) ili )m T T R(R 2 j a ' j oj ' oj = , (7.19) gde su : Ta – početna temperatura vazduha, T’ j – srednja temperatura gasova u ogranku j, ∫ − − − +== L o zj zj zj zj ' j N)LTMexp( 1)LTMexp( ...
... - unutrašnja energija, qi - toplotni fluks, u – gustina toplotne energije. Član j i ijijij x v d ∂ ∂ σ=σ predstavlja rad površinskih sila, koji može da se predstavi u obliku i j i j j i 2 k k k k j i ij x v x v x v x v x v p x v ∂ ∂ ∂ ∂ + ∂ ∂ µ+ ...Nikola Lilić, Ranka Stanković, Ivan Obradović. Hibridni sistem za planiranje i analizu ventilacije rudnika, Rudarsko-geološki fakultet, Univerzitet u Beogradu, 2000
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Crystallography and Surface Oxidation of Stoichiometric Arsenopyrite from Šumadija-Kopaonik Pb-Zn/Polymetallic Ore District (Serbia)
Ivana Jelić, Aleksandar Pačevski, Aleksandar Kremenović, Aleš Šoster, Andreja Šestan, Janez Zavašnik (2023)The behaviour and stability of arsenopyrite largely depend on its crystal structure, but studies of crystallography and structural defects are scarce. For clarification, we investigated a series of natural arsenopyrite crystals from the polymetallic Pb-Zn-(±Cu,Ag,Au,Sb,Bi,W) Šumadija-Kopaonik ore district (Serbia) by powder X-ray diffraction (XRPD). Among them, samples from the Drenjak gold mineralisation showed near-stoichiometric FeAsS composition and were further investigated by conventional and high-resolution transmission electron microscopy methods. TEM revealed abundant planar crystallographic defects and epitaxial surface oxide layer ...Inorganic Chemistry, Condensed Matter Physics,General Materials Science, General Chemical Engineering, crystal structure, FeAsS, oxidation, TEM, XRPD... Peng, E.; Zou, S.; Deng, T.; Lai, E; Ning, J.; Dong, G.; Xu, D. Micro-Textural and Chemical Fingerprints of Hydrothermal Cobalt Enrichment in the Jingchong, Co-Cu Polymetallic Deposit, South China. Ore Geol. Rev. 2022, 142, 104721. [CrossRef] 4. · Chen,J.;Chen, Y.; Wei, Z.; Liu, E. Bulk Flotation ...
... Ustaszewski, K. The Alpine- Carpathian-Dinaridic Orogenic System: Correlation and Evolution of Tectonic Units. Swiss J. Geosci. 2008, 101, 139–183. [CrossRef] 16. ŠosterA.;Zavašnik, J.; O'Sullivan, P.; Herlec, U.; Potočnik Krajnc, B.; Palinkaš, L.; Zupančič, N.; Dolenec, M. Geochemistry of Bashib ...
... Šestan 305 and Janez Zavašnik *05 Q check for updates Citation: Jelić, L; Pačevski, A.; Kremenović, A.; Šoster, A.; Šestan, A.; Zavašnik, J. Crystallography and Surface Oxidation of Stoichiometric Arsenopyrite from Šumadija- Kopaonik Pb-Zn/Polymetallic Ore District (Serbia). Crystals ...Ivana Jelić, Aleksandar Pačevski, Aleksandar Kremenović, Aleš Šoster, Andreja Šestan, Janez Zavašnik. "Crystallography and Surface Oxidation of Stoichiometric Arsenopyrite from Šumadija-Kopaonik Pb-Zn/Polymetallic Ore District (Serbia)" in Crystals, MDPI AG (2023). https://doi.org/10.3390/cryst13020278
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Површинско распадање керсантита из Тешића мајдана у корелацији са начином обраде на примеру малог степеништа (Београдска тврђава)
Невенка Новаковић (2024)Архитектуру Београда на прелазу 19. у 20. век обележила је употреба керсантита из каменолома Тешића мајдана. Kao камен високих декоративних својстава, керсантит је коришћен за јавне споменике, делове или потпуну изградњу објеката (Народна скупштина Србије, Мало степениште, Народни музеј и др.). Како очување споменика културе изискује познавање својстава уграђеног камена, истраживања су обухватила детаљно проучавање петролошких, хемијских и физичких карактеристика керсантита из Тешића мајданa и узорака камена из споменика Мало степениште (студија случаја). Након детаљног мапирања стања керсантита, лабораторијских ...керсантит, Мало степениште, споменик културе, архитектонски камен, физичко-хемијско распадање, мапирање, форме распадања, површинска обрадаНевенка Новаковић. Површинско распадање керсантита из Тешића мајдана у корелацији са начином обраде на примеру малог степеништа (Београдска тврђава), Београд : [Н. Новаковић], 2024