Претрага
467 items
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Sinteza i strukturna karakterizacija mikroporoznih arsenata i fosfata
Sabina Z. Kovač (2015-09-28)Predmet rada i istraživanja ove doktorske disertacije su sinteza i strukturnekarakteristike novih kristalnih arsenata i fosfata koji sadrže Mg, K, Ca, Mn, Fe, Co, Ni,Cu, Zn, Sr, Ba i druge katjone. U strukturama arsenata i fosfata, AsO4- i PO4-tetraedrinajčešće se vezuju sa tetraedarski ili oktaedarski koordinisanim katjonima prelaznihmetala formirajući otvorene strukture (slojeve ili 3D mreže) sa širokim opsegomrazličitih topologija. U šupljinama ili porama u obliku povezanih ili nepovezanihkanala, tunela, kaveza i međuslojnog prostora mogu se ugraditi različiti vanmrežni joni(obično ...... Simetrijski kodovi: (i) –x, y, ‒z‒1/2; (ii) ‒x+1/2, y, z‒1/2; (iii) ‒x, y, ‒z+1/2; (iv) x, ‒y+1, z+1/2; (v) ‒x, ‒y, ‒z; (vi) x, ‒y+1, z‒1/2; (vii) ‒x+1/2, y, z+1/2; (viii) ‒x+1/2, ‒y+1, z; (ix) ‒x, ‒y+1, ‒z; (x) x+1/2, ‒y, ‒z+1/2; (xi) x, ‒y, z+1/2; (xii) ‒x+1/2, ‒y, z. Tabela 24. Sume valenci ...
... tačkastim linijama. Simetrijski kodovi: (i) x, y+1, z; (ii) x‒1/2, ‒y‒1/2, z‒1/2; (iii) ‒x+1/2, y‒3/2, ‒z‒1/2; (iv) ‒x, ‒y, ‒z; (v) ‒x+1/2, y‒1/2, ‒z‒1/2; (vi) ‒x, ‒y‒1, ‒z; (vii) x, y‒1, z; (viii) ‒x+1, ‒y+1, ‒z; (ix) ‒x, ‒y+1, ‒z; (x) ‒x+1, ‒y, ‒z; (xi) x‒1/2, ‒y+1/2, z+1/2. Sinteza i strukturna ...
... O3‒Cu1 0,08 Simetrijski kodovi: (i) −x+1, −y, −z+1; (ii) −x+3/2, y+1/2, −z+1/2; (iii) x−1/2, −y+1/2, z−1/2; (iv) −x+1/2, y+1/2, −z+1/2; (v) −x+1, −y, −z; (vi) x−1, y, z; (vii) x+1, y, z; (ix) −x+1/2, y−1/2, −z+1/2; (xii) −x+3/2, y−1/2, −z+1/2; (xvii) x+1/2, −y+1/2, z+1/2. Atom bakra, koji se ...Sabina Z. Kovač. "Sinteza i strukturna karakterizacija mikroporoznih arsenata i fosfata" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-09-28)
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Sinteza i strukturna karakterizacija novih cezijumskih i kalijumskih silikata sa elementima retkih zemalja
Predrag Z. Dabić (2022)Predmet i ciljevi naučnog istraživanja ove doktorske disertacije su sinteza i strukturna karakterizacija novih cezijumskih i kalijumskih silikata sa elementima retkih zemalja. Istraživanja su izvedena u okviru sistema SiO2–REE2O3–XF, gde REE predstavlja trovalentni katjon elementa retkih zemalja (Sc, Y, Sm, Eu, Gd, Ho, Er, Tm, Yb, Lu), dok X predstavlja jednovalentni katjon alkalnih metala (K, Cs). Rad na disertaciji bio je fokusiran na sintezu monokristala, određivanje kristalnih struktura, kao i na kristalografsko i kristalohemijsko ispitivanje sintetisanih monokristala. Monokristali su sintetisani ...alkalni silikati elemenata retkih zemalja, kristalna struktura, sinteza metodom fluksa, rendgenska difrakcija na monokristalu, elementi retkih zemaljaPredrag Z. Dabić. Sinteza i strukturna karakterizacija novih cezijumskih i kalijumskih silikata sa elementima retkih zemalja, Beograd : P. Dabić, 2022
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The external aggregation Newton's method for solving nonlinear equations and applications
Marija Paunović, Dejan Ćebić, Nebojša Ralević. "The external aggregation Newton's method for solving nonlinear equations and applications" in The University Thought - Publication in Natural Sciences, Centre for Evaluation in Education and Science (CEON/CEES) (2020). https://doi.org/10.5937/univtho10-24982
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Povećanje iskorišćenja ležišta Y" primenom metode cikličnog utiskivanja vodene pare"
Mišo Soleša (1988)Mišo Soleša. Povećanje iskorišćenja ležišta Y" primenom metode cikličnog utiskivanja vodene pare", Beograd:Rudarsko-geološki fakultet, 1988
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Using English Baits to Catch Serbian Multi-Word Terminology
In this paper we present the first results in bilingual terminology extraction. The hypothesis of our approach is that if for a source language domain terminology exists as well as a domain aligned corpus for a source and a target language, then it is possible to extract the terminology for a target language. Our approach relies on several resources and tools: aligned domain texts, domain terminology for a source language, a terminology extractor for a target language, and a ...aligned texts, word alignment, terminology extraction, electronic dictionaries, morphological inflection... ed Se rb ia n D ic ti on ar y E ng lis h D ic ti on ar y R es ul t se ts M W T bi bl io te čk ih ud ru že nj a sa bi bl io te čk iu dr už en je bi bl io te čk iu dr už en je bi bl io te ka dr uš tv o as so ci at io n li br ar y 1, 3, 5, 6 ye s bi bl io te ...
... dr uš tv o as so ci at io n li br ar y 1, 3, 5, 6 ye s bi bl io te čk a as oc ij ac ij a ni je bi bl io te čk ia so ci ja ci ja bi bl io te čk ia so ci ja ci ja bi bl io te ka dr uš tv o as so ci at io n li br ar y 1, 3, 5, 6 ye s ud ru že nj a ia so ci ...
... io te čk i in fo rm a- ci on is is te m li br ar y in fo rm at io n sy s- te m 1, 2, 3, 4 bi bl io te ka m ed ij at ek a bi bl io te ka m ed ij at ek a bi bl io te čk i in fo rm a- ci on is is te m li br ar y in fo rm at io n sy s- te m 1 dr ug im bi bl io ...Cvetana Krstev, Branislava Šandrih, Ranka Stanković. "Using English Baits to Catch Serbian Multi-Word Terminology" in Proceedings of the 11th International Conference on Language Resources and Evaluation, LREC 2018, Miyazaki, Japan, May 7-12, 2018, European Language Resources Association (ELRA) (2018)
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Structural dissymmetrization of optically anisotropic Grs64±1Adr36±1Sps2 grandite from Meka Presedla (Kopaonik Mt., Serbia)
In this paper, grandite core with Grs64±1Adr36±1Sps2composition was crystallographically studied. This core represents zone A of the macroscopically visiblefive A–E zones of the optically anisotropic Grs58–64 Adr36–42Sps2 grandite. The applied procedure includes the detailed analysis of the powder diffraction patterns, and the Rietveld refinements of the crystal structures in a series of 18 space groups and two mixtures, which were followed by the comparative analysis of the R-values, site occupancy factors, and the bond lengths and angles. Synthesis of all ...Pavle Tančić, Aleksandar Kremenović, Predrag Vulić. "Structural dissymmetrization of optically anisotropic Grs64±1Adr36±1Sps2 grandite from Meka Presedla (Kopaonik Mt., Serbia)" in Powder Diffraction, Cambridge University Press (CUP) (2019). https://doi.org/10.1017/S0885715619000897
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Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation
kontinentalna tektonika: kompresija, kontinentalna tektonika: ekstenzija, kontinentalna tektonika: transkurentni i transformni rasedi, pukotine, rasedi, zone snažnih deformacija, kinematika deformacija kore i omotača, teorijska mehanika, modelovanje... uniaxial extension (F’: a= 1+3 x 107, b =1, y = 0) (b) transtension (F!: a= 1,b =1+5 x 1073, y = 1.5 x 1077) (c) strike-slip (F’: a = 1, b = 1, y =3 x 1077) (d) transpression (F’: a = 1, b=1-—5 x 10-3, y =1.5 x 1077) (e) uni-axial extension (F’: a = 1 — 8 x 10-3, b = 1, y = 0) Left-hand panel: principal finite ...
... subject to simple shear, with shear parallel to x (a= 1,b=1, y > 0, 6 = 0), the deformation gradient is: ly ] F,, =T = 21 ss 1 (21) and the infinitesimal shear becomes: 0 y/2| ss = : 22 ° y 0 (22) Material that originally is parallel with the y-axis will elongate, due to the shear parallel to x, see the ...
... Our main purpose here is to determine ∂u ∂X , that we can write as: ∂u ∂X = [ ∂u ∂ X ∂u ∂Y ∂v ∂ X ∂v ∂Y ] = ∂u ∂s ∂s ∂X = [ ∂u ∂s ∂u ∂t ∂v ∂s ∂v ∂t ][ ∂s ∂ X ∂s ∂Y ∂t ∂ X ∂t ∂Y ] (A5) We do not have access to ∂s ∂X but can compute ∂X ∂s using the shape functions. These ...Taco Broerse, Nemanja Krstekanić, Cor Kasbergen, Ernst Willingshofer. "Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation" in Geophysical Journal International, Oxford University Press (OUP) (2021). https://doi.org/10.1093/gji/ggab120
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SEM-EDS analysis and microindentation hardness study of Zr-doped X2Y3 (X=Bi, Sb; Y=Te, Se) p-type semiconductor
Požega Emina, Marković Ivana, Vuković Nikola. "SEM-EDS analysis and microindentation hardness study of Zr-doped X2Y3 (X=Bi, Sb; Y=Te, Se) p-type semiconductor" in Proceedings of the 45th International October Conference on Mining and Metallurgy, Bor:Univerzitet u Beogradu – Tehnički fakultet u Boru (2013): 600-603
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Утицај обртног магнетног поља на дерацемизацију кристала натријум-хлората
... HATPHJyYM-XJIOPATA M. Mu:ojenuh ", A. )Kekuh ", H. Jla0uh *, B. Byueruh ", B. MakcuoBuh * “ Ynuaepsaumem y bBeozpaOy, Ousuuku (akymamem, Cmyoenmpcku mpe 12, 11000 beoapa0; ' Vnusepsumem y BeozpaOy, Pyoapcko-zeomotuku qjakyamem, Đyuuna 7, 11000 beozpao e-mail: andrijana(q)ff.bg.ac.rs BuynmaH ...
... KpHcTajla pacnMx H3 BOJIĆHMX pacTBOpa. Y OBOM pany OMhc nmpHMkaaaHM pe3ynrarm yrHmMaja porupajyher MarHeTHor HOJba Ha MepameMHHamWHjy KpHcTaja HaTpHjyM-XJopaTa MH3 BOJUĆHHMX pacrBopa dacHheHMx Ha TeMmeparypH 7,={(3l.0+0.1)C. Kpucrama cy HyKJIeHcaHH H pacjiH y TOHIJIOTHO H3OJTIOBaHoj mocy,)uH ca 20 ...
... 0+0.1)"C , y oOprHOM MaTrHCTHOM ITIOJby jauHHe B = (150+9) mT, npu Op3HHH porauuje 200-1200 ob/min ca KkopakoM 200 ob/min. HakoH pacra, kojuH je Tpajao oko 4 h, nojntapH3alHOHOM MHKPpOCKOTIHJOM yTBPpbjeHa je opHjeHTanuja KpHcTajla. Pesaynraru nokayyJy na Op3uHa poranuje I0Jba yrHue Ha y,lcO JIOOHJjeHHX ...М. Милојевић, А. Жекић, П. Дабић, Б. Вучетић, Б. Максимовић. "Утицај обртног магнетног поља на дерацемизацију кристала натријум-хлората" in XXVII конференција Српског кристалографског друштва, Чачак, 14-15. јун, 2023., Београд : Српско кристалографско друштво (2023)
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Variation of olivine composition in the volcanic rocks in the Songliao basin, NE China: lithosphere control on the origin of the K-rich intraplate mafic lavas
Zhang, L.-Y., Prelević Dejan, Li, N., Mertz-Kraus, R., Buhre, S.. "Variation of olivine composition in the volcanic rocks in the Songliao basin, NE China: lithosphere control on the origin of the K-rich intraplate mafic lavas" in Lithos 262 (2016): 153-168. https://doi.org/https://doi.org/10.1016/j.lith
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New U–Pb dating and Hf-isotope composition of the Gornjane Granitoids (South Carpathians, East Serbia)
Vasković Nada, Belousova Elena, O’Reilly Susann Y, Griffin William L., Srećković Batoćanin Danica, Christofides Georgios, Koroneos Antonis (2012)Vasković Nada, Belousova Elena, O’Reilly Susann Y, Griffin William L., Srećković Batoćanin Danica, Christofides Georgios, Koroneos Antonis. "New U–Pb dating and Hf-isotope composition of the Gornjane Granitoids (South Carpathians, East Serbia)" in 5th Mineral Sciences in the Carpathians Conference and 3rd Central-European Mineralogical Conference no. 7, Miskolc, Hungary:Acta Mineralogica-Petrographica, Abstract Series (2012): 146-146
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Composition related properties of (Yb,Y)2O3 nanoparticles synthesized by controlled thermal degradation of AA complexes
Antić Bratislav, Kremenović Aleksandar, Vučinić-Vasić Milica, Dohčević-Mitrović Zorana, Nikolić Aleksandar S., Gruden-Pavlović Maja, Jancar Bostjan, Meden Anton (2010)Antić Bratislav, Kremenović Aleksandar, Vučinić-Vasić Milica, Dohčević-Mitrović Zorana, Nikolić Aleksandar S., Gruden-Pavlović Maja, Jancar Bostjan, Meden Anton. "Composition related properties of (Yb,Y)2O3 nanoparticles synthesized by controlled thermal degradation of AA complexes" in Materials Chemistry and Physics no. 122, PO BOX 564, 1001 LAUSANNE, SWITZERLAND:Elsevier Science Sa (2010): 386-391. https://doi.org/10.1016/j.matchemphys.2010.03.
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Influence of DEM resolution on numerical modelling of debris flows in RAMMS - Selanac case study
Debris flows induced by intensive rainfall represent very hazardous phenomena in many parts of the World. Methods for prediction of runout distance of flow like mass movements are different and depending on the input data, rheology, and available or appropriate numerical solution. However, sometimes it is not easy to obtain pre event and post event high-resolution data in the rural or mountainous area. Thus, the topology of terrain is the most important input parameter for the every real case ...... height H (x, y,t) and flow velocity U (x, y,t) and is given by: 𝑄(𝑥, 𝑦, 𝑡) ˙ = 𝜕𝑡𝐻 + 𝜕𝑥 (𝐻 𝑈𝑥 ) + 𝜕𝑦 (𝐻 𝑈𝑦 ) (1) where Q(x, y,t) ˙ describes the mass production source term, and Ux and Uy represent the depth- averaged velocities in horizontal directions x and y (Christen ...
... 2013). Figure 1 The topography Z(X, Y) is given in the Cartesian framework, X and Y being the horizontal coordinates. The surface induces a local coordinate system x, y, z (Christen et al., 2010a) . It is discretized such that its projection onto the X, Y plane results in a structured mesh (from ...
... using some type of 2-phase numerical models potentially could provide more accurate results. References Bartelt P, Buehler Y, Christen M, Deubelbeiss Y, Graf C, McArdell B W (2013) RAMMS–rapid mass movement simulation, A modelling system for debris flows in research and practice, user ...Jelka Krušić, Biljana Abolmasov, Mileva Samardžić Petrović. "Influence of DEM resolution on numerical modelling of debris flows in RAMMS - Selanac case study" in 4th Regional Symposium on Landslides in the Adriatic Balkan Region, 23-25 October 2019, Sarajevo, Bosnia and Herzegovina, Geotechnical Society of Bosnia and Herzegovina (2019). https://doi.org/ 10.35123/ReSyLAB_2019
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Geodynamics of basins above subducted slabs: An integrated modelling study of tectonics, sedimentation, and magmatism in the Timok Magmatic Complex
Uros Stojadinovic, Marinko Toljic, Branislav Trivic, Radoje Pantovic, Danica Sreckovic-Batocanin, Nemanja Krstekanic, Bojan Kostic, Milos Velojic, Jelena Stefanovic, Nikola Randjelovic, Maja Males (2024)Uros Stojadinovic, Marinko Toljic, Branislav Trivic, Radoje Pantovic, Danica Sreckovic-Batocanin, Nemanja Krstekanic, Bojan Kostic, Milos Velojic, Jelena Stefanovic, Nikola Randjelovic, Maja Males. "Geodynamics of basins above subducted slabs: An integrated modelling study of tectonics, sedimentation, and magmatism in the Timok Magmatic Complex" in Annales geologiques de la Peninsule balkanique, National Library of Serbia (2024). https://doi.org/10.2298/GABP240116003S
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Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering
Josip Išek, Lazar Kaluđerović, Nikola Vuković, Maja Milošević, Ivana Vukašinović, Zorica Tomić (2020)... Portuguese). Sun H., Tan D., Peng T. & Liang Y. (2016) Preparation of calcium sulfate whis- ker by atmospheric acidification method from flue gas desulfurization gyp- sum. Procedia Environmental Sciences, 31, 621–626. Tian T., Yan Y., Hu Z., Xu Y., Chen Y. & Shi J. (2016) Utilization of original ...
... **Ra, *!"pb, Th and “K were investigated using Y-ray spectrometry. Based on the activity concentration results, a number of radiometric parameters were calculated for the original and recrystallized phosphogypsum (i.e. radium equivalent activity, Y indices for construction materials, o index and external ...
... ized gypsum. For both phosphogypsum samples, the calculated values for Ra.qyx the a-index and almost all y-indices were higher than the international recommended limits, except for the y-index limit calculated for utilization in road construction. On the other hand, all of the calculated indices ...Josip Išek, Lazar Kaluđerović, Nikola Vuković, Maja Milošević, Ivana Vukašinović, Zorica Tomić. "Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering" in Clay Minerals, Cambridge University press (2020). https://doi.org/10.1180/clm.2020.11
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Quantitative analysis of syllable properties in Croatian, Serbian, Russian, and Ukrainian
Biljana Rujević, Marija Kaplar, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Jan Mačutek (2021)Biljana Rujević, Marija Kaplar, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Jan Mačutek. "Quantitative analysis of syllable properties in Croatian, Serbian, Russian, and Ukrainian" in Language and Text: Data, models, information and applications, John Benjamins Publishing Company (2021). https://doi.org/10.1075/cilt.356.04ruj
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Low-temperature phase transition and magnetic properties of K3YbSi2O7
Predrag Dabić, Volker Kahlenberg, Biljana Krüger, Marko Rodić, Sabina Kovač, Jovan Blanuša, Zvonko Jagličić, Ljiljana Karanović, Václav Petříček, Aleksandar Kremenović (2021)alkalni silikati elemenata retkih zemalja, fazni prelazi, magnetne karakteristike, razdvajanje kristalnog polja, silikati lantanica... 164.3 (7) O1v—Si1—O3 109.4 (2) �2 Symmetry codes: (i) x + 1 2, y + 1 2, z; (ii) x, �y, �z + 1; (iii) �x, �y, z � 1 2; (iv) � x � 1 2, � y � 1 2, z � 1 2; (v) x � 1 2, �y � 1 2, �z + 1; (vi) �x + 1 2, �y � 1 2, �z + 1; (vii) �x, y, �z + 3 2. Table 6 Bond valences ij (v. u.) for polymorph �0-K3YbSi2O7 ...
... = 9.9201 Å, c = 13.9339 Å). Atom Wyckoff site x y z Yb1 4a (0,0,0) 0 0 0.5 K1 8f (0,y,z) 0.5 0.83333 0.5918 Si1 8f (0,y,z) 0.5 0.16667 0.6322 K2 4c (0,y,14) 0 0 0.75 O1 16h (x,y,z) 0.7318 0.0894 0.5959 O1_2 8f (0,y,z) 0.5 0.3212 0.5959 O2 4c (0,y,14) 0.5 0.16667 0.75 Table 8 The displacement field ...
... formed by a regular alternation of two types of layers, which Symmetry codes: (i) x + 3, y + 4 2; (ii) x, —y, —z + 1; (iii) —x, -y, 2 -— } (iv) —-x-—3-y-— 32-5) xX -4-V— 3-2 t+ bh (i) x43, -y —3, -z + (vii) —x, y, -z +3. ie Table 6 Bond valences vj (v. u.) for polymorph f’-K3YbSi,O;. Ki" K2" Yb" si ...Predrag Dabić, Volker Kahlenberg, Biljana Krüger, Marko Rodić, Sabina Kovač, Jovan Blanuša, Zvonko Jagličić, Ljiljana Karanović, Václav Petříček, Aleksandar Kremenović. "Low-temperature phase transition and magnetic properties of K3YbSi2O7" in Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, International Union of Crystallography (IUCr) (2021). https://doi.org/10.1107/S2052520621006077
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Rock slope stability analysis under Hoek–Brown failure criterion with different flow rules
The stability analysis of homogeneous rock slope following the Hoek–Brown failure criterion under the hypothesis of different flow rules is performed based on limit equilibrium and finite element methods. The applied failure criterion is the generalized Hoek–Brown that can be introduced as a shear/normal function in analysis applying different flow rules. The results are compared with those obtained by the application of equivalent shear strength parameters of the Mohr–Coulomb criterion, considering that this is still the most widely used ...Kružna klizna površ, Huk-Braunov kriterijum loma, Kriterijum popuštanja, Smičuća/normalna funkcija, Nivo napona, Verovatnoća i parametarska analizaSvetlana Melentijević, Zoran Berisavljević, Dušan Berisavljević, Claudio Olalla Marañón . "Rock slope stability analysis under Hoek–Brown failure criterion with different flow rules" in Bulletin of Engineering Geology and the Environment , Springer (2024). https://doi.org/10.1007/s10064-024-03667-0
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Interactions of Copper(II) Complexes of some Schiff base ligands with calf thymus DNA and bovine serum albumin
Joni prelaznih metala u kombinaciji sa različitim ligandima nude veliki broj mogućnosti za ispitivanje potencijalnih bioaktivnosti. Među jonima prelaznih metala, bakar je poznat kao endogeni metal za ljude, sa karakterističnim biološkim redoks aktivnostima i relativno jakim afinitetom za nukleobaze. Kompleksi bakra ispoljavaju svoju antitumornu aktivnost na nekoliko različitih načina, generišu veliku količinu ROS, što uzrokuje oksidativno oštećenje mitohondrija i biomakromolekula. Nađeno je da kompleksi bakra(II) imaju umeren do dobar afinitet vezivanja sa DNK, uglavnom putem interkalacije.Angelina Petrović, Aleksandar Mijatović, Rada Baošić, Jovana Bogojeski. "Interactions of Copper(II) Complexes of some Schiff base ligands with calf thymus DNA and bovine serum albumin" in 6. Konferencija mladih hemičara Srbije, Srpsko hemijsko društvo (2018)
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Analysis of a simplified model for determining rock mass oscillation velocity at the Kovilovača open pit
... R and rock mass oscillation velocity Y : 202 • muodell: ,= 0.9843 for total of 12 data (there is a strong correlation between R and y , given in the Equation (11)). • model2: , = 0.8487 fortotalof 11 data (there is a strong correlation between R and y , given in the Equation (12)). • model3: ...
... correlation between R and y , given in the Equation (13)). • model4: op, =0.9852 fortotalof 12 data (there is a strong correlation between R and y , given in the Equation (14)). • model5: o,. =0.8537 fortotalof 11l data (there is a strong correlation between R and y , given in the Equation (15)) ...
... as follows: • YV, —rock mass oscillation velocity horizontal transversal component, • V, — rock mass oscillation velocity vertical component, • Y, — rock mass oscillation velocity horizontal longitudinal component. Based on that, maximum, i.e., resulting rock mass oscillation velocity V, can be ...Suzana Lutovac, Miloš Gligorić, Jelena Majstorović, Luka Crnogorac. "Analysis of a simplified model for determining rock mass oscillation velocity at the Kovilovača open pit" in 9th International Conference Mining and Environmental protection MEP, 24 – 27 May 2023, Sokobanja, Serbia, Belgrade : University of Belgrade-Faculty of mining and geology (2023)