Претрага
2174 items
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Gate Road Support Deformation Forecasting Based on Multivariate Singular Spectrum Analysis and Fuzzy Time Series
Luka Crnogorac, Rade Tokalić, Zoran Gligorić, Aleksandar Milutinović, Suzana Lutovac, Aleksandar Ganić (2021)Underground mining engineers and planners in our country are faced with extremely difficult working conditions and a continuous shortage of money. Production disruptions are frequent and can sometimes last more than a week. During this time, gate road support is additionally exposed to rock stress and the result is its progressive deformation and the loss of functionality of gate roads. In such an environment, it is necessary to develop a low-cost methodology to maintain a gate road support system. ...deformacije podgrade, lasersko skeniranje, višekanalna singularna spektralna analiza, prognoza, klasterisanje fuzzy vremenskih serija... classical multivariate statistical analysis literature. The matrix Y(i)Y(i)T , which is used in the univariate SSA, for the series X(i) Ni appears along the main diagonal, and the products of two Hankel matrices Y(i)Y(i)T (i 6= j) that are related to the series X(i) Ni and X(j) Nj appear in the ...
... matrix in the classical multivariate statistical analysis literature. The matrix Y YT, which is used in the univariate SSA, for the series X \ appears along the main diagonal, and the products of two Hankel matrices YY? (i # j) that are related to the series XV and x appear in the off-diagonal. The SVD ...
... strength and failure Energies 2021, 14, 3710. https://doi.org/10.3390/en14123710 https:/ /www.mdpi.com/journal/energies Energies 2021, 14, 3710 2 of 20 mode, was provided when a comparison of these three types of information was done [1]. Danial Jahed Armaghani et al. [2] applied three-nonlinear forecasting ...Luka Crnogorac, Rade Tokalić, Zoran Gligorić, Aleksandar Milutinović, Suzana Lutovac, Aleksandar Ganić. "Gate Road Support Deformation Forecasting Based on Multivariate Singular Spectrum Analysis and Fuzzy Time Series" in Energies, MDPI (2021). https://doi.org/https://doi.org/10.3390/en14123710
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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... terms and conditions of the Creative Commons Attribution (CC BY) license (https:/ / creativecommons.org//licenses/by/ 4.0/). Department of Chemistry, University of Belgrade-Institute of Chemistry, Technology and Metallurgy, Njegoševa 12, 11000 Belgrrade, Serbia ? - Faculty of Physics, University ...
... surface and processing of obtained structures into dense ceramics. The effect of structural properties and phase composition, as well as two sintering; schedules on dielectric and ferroelectric properties of synthesized ceramic composites, was studied and explained in detail. 2. Results and Discussion ...
... , LP., M.M.M., A.D., A.K., V.B.P, A.K.-G. and L.A.; Resources, M.Š., LP., M.M.M., A.D., A.K., V.B.P, A.K.-G. and L.A.; Writing—Original Draft, MŠ. and L.A.; Writing—review and editing, MŠA., V.B.P.and L.A.; Supervision, L.A. All authors have read and agreed to the published version of the manuscript ...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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Prognoza operativne efikasnosti aktivnog podzemnog rudnika zasnovana na teoriji sivih sistema
Svetlana M. Štrbac-Savić (2016-06-10)Efikasnost predstavlja preduslov za opstanak svake rudarske kompanije, posebno u uslovima izuzetno konkurentnog trţišnog okruţenja kao što je to rudarska industrija. Efikasnost oznaĉava sposobnost kompanije da ispuni svoje kratkoroĉne ili dugoroĉne ciljeve. Operativna efikasnost se definiše kao odnos izmeĊu ulaznih parametara potrebnih za odvijanje proizvodnje i pokazatelja dobijenih proizvodnjom. U kontekstu rudarskog poslovanja, operativna efikasnost se odnosi na vreme potrebno da se mineralno dobro transformiše u novĉana sredstva. Visoka operativna efikasnost se postiţe kada se ostvari prava kombinacija karakteristika ...podzemni rudnik, operativna efikasnost, prognoza, teorija sivih sistema, stohastiĉke diferencijalne jednaĉine, simulacija... In the mining industry in particular, the relationships between input variables that are controllable and those that are not and the physical and economic outcomes are complex and often nonlinear. Operational efficiency forecasting of mine in today‘s environment is much complex than it was just a ...
... diferencijalnih jednačina, Master rad, Univerzitet u Beogradu, Matematiĉki fakultet, Beograd, 2013. [EICHENAUER86] Jurgen Eichenauer and Jurgen Lehn, A nonlinear congruential pseudorandom number generator, Statist. Hefte 27 no. 4, pp. 315–326, 1986. http://www.ams.org/mathscinet/search/authors ...
... Al-Waked, Managerial and Operational Efficiency Valuation of Privatized Firms: Case of Jordan Mining Sector, European Journal of Economics, Finance and Administrative Sciences ISSN 1450-2275 Issue 49 (2012), pp. 56-70. 2012. [KIYMAZ03] H. Kiymaz and R. Hodgin, Enhancing Clarity and Completeness of ...Svetlana M. Štrbac-Savić. "Prognoza operativne efikasnosti aktivnog podzemnog rudnika zasnovana na teoriji sivih sistema" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-06-10)
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Hydrochemical features and their controlling factors in the Kucaj-Beljanica Massif, Serbia
Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeFen Huang, Ljiljana Vasic, Xia Wu, Jianhua Cao, Saša Milanovic. "Hydrochemical features and their controlling factors in the Kucaj-Beljanica Massif, Serbia" in Environmental Earth Sciences, Springer Science and Business Media LLC (2019). https://doi.org/10.1007/s12665-019-8452-4
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Ефикасност дистрибуције и коришћења природног гаса у домаћинствима
Dejan Brkić (2010-03-30)Природни гас ће се у будућности све више користити као енергент за подмиривање грејних потреба становништва у српским градовима. Стога је потребно изнаћи најповољнији начин употребе природног гаса. Природни гас се може користити за подмирење грејних потреба становништва на два дијаметрално супростављена начина, и то директно, тако што би се гас директно уводио у зграде путем дистрибутивног система за снабдевање гасом и затим сагоревао у гасном котлу којим је сваки стан опремљен (гасни дистрибутивни систем), или индиректно, тако што ...prirоdni gаs, distribuciја gаsа,grејаnjе, cеvоvоdi, cеvоvоdnе mrеžе,fаktоr trеnjа pri prоtоku fluidа,urbаnizаm... friction factor of open channel flow. Communications in Nonlinear Science and Numerical Simulation 14(5), 2373‐2378. (на енглеском) 305. Zagarola, M.V., Perry, A.E., Smits, A.J., 1997. Log laws or power laws: The scaling in the overlap region. Physics of Fluids 9 (7), 2094‐2100. (на енглеском) 306. Zagarola ...
... sign 80(12), 54‐55. (на енглеском) 64. Caillol, J.M. 2003. Some applications of the Lambert W function to classical statistical mechanics. Journal of Physics A: Mathematical and General 36(42), 10431–10442. (на енглеском) 65. Calzetta, E. 2009. Friction factor for turbulent flow in rough pipe ...
... al Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 365(1852), 699‐714. (на енглеском) 10. Altman, T., Boulos, P.F., 1995. Convergence of Newton method nonlinear network analysis. Mathematical and Computer Modelling 21(4), 35–41. (на енглеском) 11. Andriyashev ...Dejan Brkić. "Ефикасност дистрибуције и коришћења природног гаса у домаћинствима" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2010-03-30)
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Ефикасност дистрибуције и коришћења природног гаса у домаћинствима
Dejan Brkić (2010-03-30)Природни гас ће се у будућности све више користити као енергент за подмиривање грејних потреба становништва у српским градовима. Стога је потребно изнаћи најповољнији начин употребе природног гаса. Природни гас се може користити за подмирење грејних потреба становништва на два дијаметрално супростављена начина, и то директно, тако што би се гас директно уводио у зграде путем дистрибутивног система за снабдевање гасом и затим сагоревао у гасном котлу којим је сваки стан опремљен (гасни дистрибутивни систем), или индиректно, тако што ...prirоdni gаs, distribuciја gаsа,grејаnjе, cеvоvоdi, cеvоvоdnе mrеžе,fаktоr trеnjа pri prоtоku fluidа,urbаnizаm... friction factor of open channel flow. Communications in Nonlinear Science and Numerical Simulation 14(5), 2373‐2378. (на енглеском) 305. Zagarola, M.V., Perry, A.E., Smits, A.J., 1997. Log laws or power laws: The scaling in the overlap region. Physics of Fluids 9 (7), 2094‐2100. (на енглеском) 306. Zagarola ...
... sign 80(12), 54‐55. (на енглеском) 64. Caillol, J.M. 2003. Some applications of the Lambert W function to classical statistical mechanics. Journal of Physics A: Mathematical and General 36(42), 10431–10442. (на енглеском) 65. Calzetta, E. 2009. Friction factor for turbulent flow in rough pipe ...
... al Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 365(1852), 699‐714. (на енглеском) 10. Altman, T., Boulos, P.F., 1995. Convergence of Newton method nonlinear network analysis. Mathematical and Computer Modelling 21(4), 35–41. (на енглеском) 11. Andriyashev ...Dejan Brkić. "Ефикасност дистрибуције и коришћења природног гаса у домаћинствима" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2010-03-30)
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Structural and geochronological constraints from the Drina-Ivanjica thrust sheet (Western Serbia): implications for the Cretaceous–Paleogene tectonics of the Internal Dinarides
Kristof Porkoláb, Szilvia Kövér, Zsolt Benkó, Gabor Héja, Melinda Fialowski, Balázs Soós, Nataša Gerzina Spajić, Nevenka Đerić, László Fodor (2019)Internal Dinarides, Drina-Ivanjica thrust sheet, Deformation history, K–Ar dating, Obduction, Structural analysis... method (Balogh 1985) in the K-Ar laboratory of the Institute for Nuclear Physics of the Hungarian Academy of Sciences in Debrecen. The potassium content was mea- sured on 50 mg sample aliquots after dissolution by HF and HNOx, by a Sherwood-400 type flame spectro-photometer with an accuracy ...
... orogen and are attributed to the latest Cretaceous-Paleogene collision between Adria and Europe. Regional Latest Cretaceous-Paleogene shortening was followed by strike-slip tectonics (N-S shortening and perpendicular extension) and subsequent Miocene normal faulting in both orogen-parallel and orog ...
... relations between NE-SW and NW-SE trending normal faults and Dxy strike slip faults (Figs. 2 and 7a). We have distinguished two extensional stress tensor groups that represent orogen-parallel (NW-— SE) and orogen-perpendicular , (NE-SW) extension (Fig. 5). Our observations and the dataset are not ...Kristof Porkoláb, Szilvia Kövér, Zsolt Benkó, Gabor Héja, Melinda Fialowski, Balázs Soós, Nataša Gerzina Spajić, Nevenka Đerić, László Fodor. "Structural and geochronological constraints from the Drina-Ivanjica thrust sheet (Western Serbia): implications for the Cretaceous–Paleogene tectonics of the Internal Dinarides" in Swiss Journal of Geosciences (2019)
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Mineral Resources of Serbia: Environmental, Societal and Economic Challenges
... 2007 Applied Physics and Informatics, Faculty of Physics, University of Belgrade Research Topics: Atmospheric chemistry and physics Environmental multiphase systems Air pollution spatio-temporal distribution, transport and forecast Environmental factors affecting human health and mortality; ...
... of the Statistical Office of the Republic of Serbia, national strategy of sustainable agriculture and rural development and other development and legislative documents of line ministries, institutions and organizations. A number of scientific papers and projects results of domestic and foreign ...
... analyzed and evaluated using the following mathematical and statistical methods: factor impact on the plant characteristics (variance analysis) and correlation analysis of plant characteristics with the use of the statistical package STATISTICA 12 for Windows. Applied mathematical and statistical methods ...Vladimir Simić, Rade Jelenković, Dragana Životić. "Mineral Resources of Serbia: Environmental, Societal and Economic Challenges" in Serbia: Current Issues and Challenges in the Areas of Natural Resources, Agriculture and Environment,, Nova Science Publishers, Inc. (2019)
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A Data Driven Approach for Raw Material Terminology
Olivera Kitanović, Ranka Stanković, Aleksandra Tomašević, Mihailo Škorić, Ivan Babić, Ljiljana Kolonja (2021)The research presented in this paper aims at creating a bilingual (sr-en), easily searchable, hypertext, born-digital, corpus-based terminological database of raw material terminology for dictionary production. The approach is based on linking dictionaries related to the raw material domain, both digitally born and printed, into a lexicon structure, aligning terminology from different dictionaries as much as possible. This paper presents the main features of this approach, data used for compilation of the terminological database, the procedure by which it has ...sirovine, rudarstvo, terminologija, rečnik, terminološka aplikacija, mobilna aplikacija, digitizacija, leksički podaci, korpusi, otvoreni povezani podaci... dictionaries yielding 94,539 English terms and 48,096 Serbian terms. Some terms were found in both datasets: extracted from text and retrieved from dictionaries, namely, a total of 2285 English and 308 Serbian terms. The GIZA++ [43] and Moses toolkit [44] for statistical machine translation (SMT) were used ...
... example, 885 (7%) terms related to biology, chemistry, mathematics, informatics and physics. Among entries from the mining domain, those related to a specific subdiscipline of mining were identified by mining experts, and marked by a subdomain marker, as for example, entries related to mineral processing ...
... approach for information retrieval is not so successful for knowledge extraction, lexicographic and ter- minological purposes, so we are relying on a combination of syntactic patterns [34,42,68] and statistical association measures for domain terms: log-likelihood [69], c-value/nc- value [70], because such ...Olivera Kitanović, Ranka Stanković, Aleksandra Tomašević, Mihailo Škorić, Ivan Babić, Ljiljana Kolonja. "A Data Driven Approach for Raw Material Terminology" in Applied Sciences, MDPI AG (2021). https://doi.org/10.3390/app11072892
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Model inteligentnog sistema adaptivnog upravljanja procesom prerade rude
Ivana M. Jovanović (2016-01-13)U oblasti procesa prerade rude, flotacijska koncentracija predstavlja jednu od najznačajnijih i najčešće primenjivanih metoda separacije korisnih od nekorisnih minerala. Samim tim, veoma je važno osigurati uspešan rad flotacijskog postrojenja kroz dostizanje zadovoljavajućih tehno-ekonomskih pokazatelja. Cilj upravljanja procesom flotacijske koncentracije je upravo optimizacija kvaliteta i iskorišćenja korisne komponente u koncentratu uz maksimizaciju profita. Shodno tome, istraživanja na polju modelovanja i upravljanja ovim procesom zauzimaju značajno mesto u praksi kontolnog inženjenringa.Teorijska istraživanja u okviru doktorske disertacije obuhvatila su analizu položaja ...flotacijska koncentracija, modelovanje, upravljanje, inteligentni sistem, soft kompjuting, fazi logika, veštačke neuronske mreže... Massinaei, M., 2016. Application of statistical and intelligent techniques for modeling of metallurgical performance of a batch flotation process. Chemical Engineering Communications, Article in press, DOI: 10.1080/00986445.2014.973944 120. Jain, S. 2013. Design and Simulation of Fuzzy Implication Function ...
... Structures 58 (3) pp. 543– 555 203. Nakhaei, F., Mosavi, M.R., Sam, A., Vaghei, Y., 2012. Recovery and grade accurate prediction of pilot plant flotation column concentrate: Neural network and statistical techniques. International Journal of Mineral Processing 110–111 pp. 140–154 204. Nakhaei, F., ...
... grinding and flotation. Application to a lead-silver ore, Minerals Engineering, Vol. 12, No. 8, pp. 949-967 265. Sripriya, R., Rao, P.V.T., Choudhury, B.R., 2003. Optimisation of operating variables of fine coal flotation using a combination of modified flotation parameters and statistical techniques ...Ivana M. Jovanović. "Model inteligentnog sistema adaptivnog upravljanja procesom prerade rude" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-01-13)
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Review: Methodological approaches and research techniques for addressing construction and remediation problems in karst reservoirs
Saša Milanović, Ljiljana Vasić (2021)Saša Milanović, Ljiljana Vasić. "Review: Methodological approaches and research techniques for addressing construction and remediation problems in karst reservoirs" in Hydrogeology Journal, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s10040-020-02280-1
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Отпад из процеса сагоревања угља као сировина за добијање елемената ретких земаља
Бојан Земљак (2024)Због великог броја индустрија у којима се користе ови ресурси, глобална економија се у великој мери ослања на елементе ретких земаља. Елементи ретких земаља су есенцијална сировина — материјал за развој савремених технологија, али у односу на њихову огромну потражњу, њихово вађење је ограничено и повезано је са значајним утицајима на животну средину. Због њихове ограничене доступности, проблема који се јављају при процесима експлоатације, све више и више земаља почиње да тражи повољније могућности вађења елемената [REE] из секундарних ...... between trivalent and tetravalent metallic cerium and other f-elements: stability study of various lanthanide-and actinide-halides and- oxides. Journal of Physics and Chemistry of Solids, 39(5), p.467-484. #1 [41] Zych, A.K., 2011. Luminescence properties of Ce3+, Pr3+ and Nd3+ activated ...
... Zhang, G. and Tu, H., 2022. Magnetocaloric effect in LiLn6O5 (BO3) 3 (Ln= Gd, Tb, Dy, and Ho). Cryogenics, 124, p.103476. [144] Balli, M., Jandl, S., Fournier, P. and Kedous-Lebouc, A., 2017. Advanced materials for magnetic cooling: Fundamentals and practical aspects. Applied Physics Reviews, 4(2) ...
... , Wall, F. and Merriman, D., 2018. The rare earth elements: demand, global resources, and challenges for resourcing future generations. Nafura/ Resources Research, 27, p.201-216. [9] Kursun Unver, I. and Terzi, M., 2018. Distribution of trace elements in coal and coal fly ash and their recovery ...Бојан Земљак. Отпад из процеса сагоревања угља као сировина за добијање елемената ретких земаља, 2024
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Alpine thermal events in the central Serbo-Macedonian Massif (southeastern Serbia)
Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Andreas Wetzel, Irena Peytcheva, Albrecht von Quadt (2015)Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Andreas Wetzel, Irena Peytcheva, Albrecht von Quadt. "Alpine thermal events in the central Serbo-Macedonian Massif (southeastern Serbia)" in International Journal of Earth Sciences, Springer Science and Business Media LLC (2015). https://doi.org/10.1007/s00531-015-1266-z
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Analogue modelling of strain partitioning along a curved strike-slip fault system during backarc-convex orocline formation: Implications for the Cerna-Timok fault system of the Carpatho-Balkanides
Nemanja Krstekanić, Ernst Willingshofer, Taco Broerse, Liviu Matenco, Marinko Toljić, Uroš Stojadinović (2021)... Willingshofer, E., Picken, S.J., 2019. New analogue materials for nonlinear lithosphere rheology, with an application to slab break-off. Tectonophysics 756, 73–96. Broerse, T., Krstekanić, N., Kasbergen, C., Willingshofer, E., 2021. Mapping and classifying large deformation from digital imagery: application ...
... strike-slip structure (1 in Fig. 3e and f) and the main strike-slip fault (2 in Fig. 3e and f) are connected by obliquely oriented thrusts in map view (3 and 4 in Fig. 3c–f, cross-section b-b’ in Fig. 3g) and NNW-SSE oriented strike-slip faults (5 and 6 in Fig. 3e and f, cross- section b-b’ in Fig. 3g) ...
... motion of the underlying plate (Figs. 5 and 6). The Fig. 7. Basin geometry parameters and top-view shape and position. a) Charts of basin width, length and depth in each experiment. Basins’ widths and lengths are measured in the final top-view photos in the E-W and N–S direction. Basin depths are obtained ...Nemanja Krstekanić, Ernst Willingshofer, Taco Broerse, Liviu Matenco, Marinko Toljić, Uroš Stojadinović. "Analogue modelling of strain partitioning along a curved strike-slip fault system during backarc-convex orocline formation: Implications for the Cerna-Timok fault system of the Carpatho-Balkanides" in Journal of Structural Geology, Elsevier BV (2021). https://doi.org/10.1016/j.jsg.2021.104386
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Efikasnost različitih tipova glina Srbije za adsorpciju metilen plavog
Maja D. Milošević (2016-12-09)Adsorpciona efikasnost različitih uzoraka glina sa lokaliteta Srbije određenaje njihovim tretiranjem različitim koncentracijama rastvora metilen plavog (MP).Detaljna mineraloška karakterizacija ispitivanih glina i rezultati njihove interakcijesa rastvorima MP dobijeni su primenom optičkih, rendgenskih, hemijskih, DTA ispektroskopskih metoda.Na osnovu formiranja MP agregata u izmenljivim pozicijama i površiničestica gline, razlikuju se dva tipa glinovitih minerala: visoko naelektrisani(smektiti) i nisko naelektrisani (kaoliniti). Dimeri se stvaraju na naelektrisanimpovršinama, a granica njihovog razvoja omogućuje determinaciju mineralne vrste.Molekuli MP stoje pod uglom od 21.5o kada se ...minerali glina, metilen plavo, kristali metilen plavog, difuznarefleksija, adsorpcija, flokulacija, naelektrisanje slojeva... spectroscopy study. Journal of Chemical Physics 104 (19): 7749 - 7757 119 Hang P.T. and Brindley G.W. 1970. Methylene blue absorption by clay minerals: determination of surface areas and cation exchange capacities (clay-organic studies XVIII). Clays and Clay Minerals. 18: 203 - 212 Higgins ...
... of Colloid and Interface Science 311: 14 - 23 Kobayashi H., Takahashi M. and Kotani M. 2001. Spontaneous formation of an ordered structure during dip-coating of methylene blue on fused quartz. Chemical Physics Letters 349: 376 - 382 Kobayashi M., Tokunaga H., Okubo J., Hoshi T. and Tanizaki Y ...
... montmorillonites. Clays and Clay Minerals 31: 9 - 16 Sridharan A. and Prakash K. 2001. Settling Behavior and Clay Minerology. Soils and Foundations 41: 105 - 109 Srodon J. and Eberl D.D. 1984. Illite. Review in Mineralogy and Geochemistry 13: 495 - 544. Stephan E. A. and Chase G. G. 2001. A ...Maja D. Milošević. "Efikasnost različitih tipova glina Srbije za adsorpciju metilen plavog" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-12-09)
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Surface functional groups and degree of carbonization of selected chars from different processes and feedstock
Marija Ilić, Franz-Hubert Haegel, Aleksandar Lolić, Zoran Nedić, Tomislav Tosti, Ivana Sredović Ignjatović, Andreas Linden, Nicolai D. Jablonowski, Heinrich Hartmann (2022)The knowledge ofthe structural and chemical properties of biochars is decisive for their application as technical products. For this reason, methods for the characterization of biochars that are generally applicable and allow quality control are highly desired. Several methods that have shown potential in other studies were used to investigate two activated carbons and seven biochars from different processes and feedstock. The chars were chosen to cover a wide range of chemical composition and structural properties as a hardness ...Biougalj, različiti procesi dobijanja, različite sirovine, površinski aktivne grupe, x-ray, FT-IR,XPS... against the fraction of sp hybridized carbon C-C sp* from Table 7. There is a fair nonlinear correlation between the degree of carbonization and log žAo". The value for the polarization of ACI is relatively low and might be a consequence of the high porosity of the sample that dis- turbs the free ...
... on: Facilitating Inorganic Nutrients Recycling and Altering Organic Matter Leaching. Energy Fuels. 2015; 29: 4407—4417. https://doi.org/ 10.1021/acs.energyfuels.5b01020. Van Krevelen DW. Graphical statistical method for the study of structure and reaction processes of coal. Fuel. 1950; 29: 269–284 ...
... intercept is 0.067 and represents the mean influence of the initial composition of the biomass and the changes due thermal degradation. Decarboxylation and decarbonylation result in lower O/C and higher H/C, dehydrogenation in lower H/C and demethanization in lower H/C and higher O/C. Evolution ...Marija Ilić, Franz-Hubert Haegel, Aleksandar Lolić, Zoran Nedić, Tomislav Tosti, Ivana Sredović Ignjatović, Andreas Linden, Nicolai D. Jablonowski, Heinrich Hartmann. "Surface functional groups and degree of carbonization of selected chars from different processes and feedstock" in PLOS ONE (2022). https://doi.org/10.1371/journal.pone.0277365
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Еоценска фауна југозападног дела Сирт басена (Либија)
Љупко Рундић, Мери Ганић (2020)Љупко Рундић, Мери Ганић. "Еоценска фауна југозападног дела Сирт басена (Либија)" in Записници Српског геолошког друштва, Српско геолошко друштво (2020)
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Sastav i teksture minerala FeO-Fe2O3-TiO2 sistema u vulkanskim stenama i porfirskim ležištima bakra Borske metalogenetske zone
Aleksandar Luković (2021)Proces obrazovanja minerala iz sistema FeO-Fe2O3-TiO2 u uzorcima vulkanskih stena i porfirskih orudnjenja borske zone prikazan kroz pojavu magnetita/hematita i njihovih alteracija. Minerali ove zone su ispitivani optičkim metodama (odbijena i propuštena svetlost), SEM-EDS/BSD, XRPD, LA-ICP-MS metodama. Rezultati ispitivanja su, pored glavnih Fe – Ti oksida, otkrili prisustvo ferijskog ilmenita u hornblenda andezitima I vulkanske faze kao i magnetita sa većim koncetracija Cr u zoni zlotske magnetne anomalije. Ispitivanje uzoraka iz bušotina porfirskih sistema borske zone otkriva postojanje nekoliko ...... etry: thermodynamic formulation and the estimation of intensive variables in silicic magmas. Contributions to Mineralogy and Petrology, 108(4), 485–510. Goodenough, J. B., (1967): Narrow-band electrons in transition-metal oxides. Czechoslovak Journal of Physics, 17(4), 304–336. Guillong, M., ...
... structures and stray fields of individual elongated magnetite grains revealed by magnetic force microscopy (MFM), Phys. Earth Planet. Inter., 141. Friák, M., Schindlmayr, A., & Scheffler, M., (2007): Ab initio study of the half-metal to metal transition in strained magnetite. New Journal of Physics, 9(1) ...
... H. & Bojar, A. V., (1999): Age and tectonic setting of Bocna and Ocna de Fier-Dognecea granodiorites (southwest Romania) and of associated skarn mineralisation. Min. Deposita, 34, 743-753. Oeser, M., Weyer, S., Horn, I., Schuth, S., (2014): High-Precision Fe and Mg Isotope Ratios of Silicate Reference ...Aleksandar Luković. Sastav i teksture minerala FeO-Fe2O3-TiO2 sistema u vulkanskim stenama i porfirskim ležištima bakra Borske metalogenetske zone, Beograd : [A. Luković], 2021
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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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Природни потенцијал минералних вода Србије - Natural potential of mineral waters in Serbia
Оливера Крунић (2021)Оливера Крунић. "Природни потенцијал минералних вода Србије - Natural potential of mineral waters in Serbia" in Рационално коришћење земљишта и вода у Србији - Sustainable Use of Land and Water in Serbia- Serbian Academy of Sciences and Arts; Scientific Conferences Volume CXCVII; Department of Chemical and Biological Sciences, Book 19, Српска академија наука и уметности (2021)