Претрага
672 items
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Parameter determination of soil oscillation law using quotient of the relative growth increments of oscillation velocity and reduced distances at “Nepričava“ open pit mine
... operation of relation (10) we obtain: 1 21 1 2 1 ... log log ... N N N N v v vR n R R R v where we find: 1 2 1 1 1 2 ... log log ... N N N N v v v v n R R R R (11) By the replacement ...
... R1, i = 2, 3, ..., N, from the equation (9), we can take that: 1 1 2,3,..., n i i R v v i N R from where the relation is obtained: 1 1 2 1 1 2 ... ... n N N N N R v v v v R R R (10) From the relation (10), we can determine ...
... have approximately the same value (Lutovac, 2010) which will be marked (-n), meaning that: v v n R R (2) Thereby it can be considered that: 0 lim R v v n R R which means that is: 12 ...Suzana Lutovac, Sanja Bajić, Marina Ravilić, Radmila Gaćina. "Parameter determination of soil oscillation law using quotient of the relative growth increments of oscillation velocity and reduced distances at “Nepričava“ open pit mine" in Underground Mining Engineering, Belgrade : University of Belgrade, Faculty of Mining and Geology (2015). https://doi.org/10.5937/podrad1526009L
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Models of Determining the Parameters of Rock Mass Oscillation Equation with Experimental and Mass Blastings
... 1%, the oscillation velocity of the soil v will decrease (increase) by approximately n% [8]. Indeed, for h = ± R 100 = ±1%R, from (12) we obtain: v ( R ± R 100 ) ≈ v(R)∓ n· R 100 · v(R) R , v ( R ± R 100 ) ≈ v(R)∓ n· v(R) 100 , v(R ± 1%R) ≈ v(R)∓ n%·v(R). (14) 3.3. Models to Determine the ...
... applied to the function v(R) from (7), in the final growth increment, we obtain: v(R + h) ≈ v(R) + h·v′(R + θ·h), 0 < θ < 1. (11) For small absolute values h, from (11), we obtain the relation: v(R + h) ≈ v(R) + h·v′(R). (12) Having (10) in mind, relation (12) becomes: v(R + h) ≈ v(R)− n·h·v(R) R . (13) ...
... written in the form: v(R) = K-R™. (7) Then from the Equation (7) for the derivation v’(R), we obtain: o'(R) = —n-K-R-"1, (8) Minerals 2018, 8, 70 5 of 18 which may be written in the form: v′(R) = − n R ·K·R−n. (9) Having in mind Equation (7), from the Equation (9), we obtain: v′(R) = −n·v(R) R ...Suzana Lutovac, Branko Gluščević, Rade Tokalić, Jelena Majstorović, Čedomir Beljić. "Models of Determining the Parameters of Rock Mass Oscillation Equation with Experimental and Mass Blastings" in Minerals, Basel : MDPI AG, Basel, Switzerland (2018). https://doi.org/10.3390/min8020070
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Soil oscillation law parameter determination with the application of Lagrange’s theorem at “Kovilovača“ open pit
... values v(Rs), v(R1), Rs and R1 we take from the table of experimental data, so that we have: c s s Rv v 1 1 R-R v- . (12) In this manner we find a derivative v'(Rc) at point Rc, whereas Rc is given using formula (11). In practice the formula (8) is used so that the values v(Rs) and v(R1) ...
... formuli (8) vrednosti v(Rs), v(R1), Rs i R1 uzimamo iz tabele eksperimentalnih podataka, tako da imamo: c s s Rv v 1 1 R-R v- . (12) Na ovaj način nalazimo izvod v'(Rc) u tački Rc, gde je Rc dato pomoću formule (11). U praksi formulu (8) koristimo tako što vrednosti v(Rs) i v(R1) uzimamo iz ...
... i.e. n RK R n v . (5) Bearing in mind (4), equation (5) is re- duced to: R vn v (6) From (6) the following is found: v R vn (7) If the derivative v' at some point Rc could not be found then from the equation (7), n can be determined. Value of deriva- tive v' can be determined using ...Suzana Lutovac, Nebojša Vidanović, Čedomir Beljić, Zoran Gligorić. "Soil oscillation law parameter determination with the application of Lagrange’s theorem at “Kovilovača“ open pit" in Mining and Metallurgy Engineering Bor, Bor : Mining and Metallurgy Institute Bor (2015). https://doi.org/10.5937/MMEB1503053L
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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... platelet, estimated as 25.47% for V and 74.53% for O, are close to the values of stoichiometric V5»Os. Molecules 2023, 28, 655 5of18 Spectrum 1 V A o A |A o 1 2a 3 4 5 6 7/ B 0 10 Full Scale 4432 cts Cursor:-0.124 KeV (0 cts) keV v Spectrum 2 V o V r - ——— e O 1 2 3 4 5 6 7 8 9 ...
... good crystallinity of the V>»Os phase [30—32]. A broad feature at ~1020 cm !1 may be ascribed to surface VOx species on V>Os [33]. R a m a n in te ns it y 100 200 300 400 500 600 700 800 900 1000 1100 1200 Raman shift (cm) Figure 5. Experimental Raman spectrum of V»Os catalyst (after a baseline ...
... was used to prepare V»Os powders [14,48]. For that purpose, 0.1 M ammonium metavanadate (NHaVOx) was dissolved in 80 mL of distilled water, resulting, in a pale yellow solution. To adjust the pH of the reaction solution to about 4, the diluted acetic acid (C(HaCOOH/Hx»O = 1:1 v/v) was added drop-wise ...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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Named Entity Recognition for Distant Reading in ELTeC
Francesca Frontini, Carmen Brando, Joanna Byszuk, Ioana Galleron, Diana Santos, Ranka Stanković (2020)Akcija COST „Udaljeno čitanje za evropsku književnu istoriju“, koja je počela 2017. godine, ima među svojim glavnim ciljevima stvaranje višejezične zbirke evropskih književnih tekstova (ELTeC) otvorenog koda. U ovom radu predstavljamo rad koji je obavljen na ručnom označavanju selekcije ELTeC kolekcije za imenovane entitete, kao i na proceni postojećih alata za prepoznavanje imenovanih entiteta u pogledu njihove sposobnosti da automatski urade takve anotacije. U poslednjem paragrafu se razmatraju zajedničke tačke između ove inicijative i CLARIN-a.... R S ) , p la c e s (L O C ), e v e n ts (E V E N T ) , o rg a n is a tio n s (O R G ) (s e e T a b le 1). H o w e v e r , th is a n n o ta t io n w a s la te r s im p lif ie d to a v o id n e s te d a n n o ta tio n s a n d o v e r la p . D E M O E V E N T L O C O R G O T H E R P E ...
... lo c a tio n s in n o v e ls . 6F o r P o r tu g u e s e , tw o se ts o f n o v e l e x c e rp ts a re a v a ila b le : p o r1 c o m p ris e s c a n o n ic a l n o v e ls , in m o d e rn o r to g ra p h y , w h ile p o r2 w a s c re a te d f ro m n o v e ls w ith o ld o rto ...
... a g e s a s c o m p a ra b le a s p o s s ib le , th e n o v e ls a re s e le c te d to re p re s e n t a ) v a r io u s ty p e s o f n o v e ls a s to th e i r le n g th : sh o r t s to r ie s , e p ic n o v e ls , b ) fiv e tw e n ty -y e a r t im e p e r io d s w ith ...Francesca Frontini, Carmen Brando, Joanna Byszuk, Ioana Galleron, Diana Santos, Ranka Stanković. "Named Entity Recognition for Distant Reading in ELTeC" in CLARIN Annual Conference 2020, Oct 2020, Virtual Event, France, CLARIN (2020)
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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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Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species
Biljana P Dojčinović, Boštjan Jančar, Lotfi Bessais, Aleksandar Kremenović, Nataša P Jović-Jovičić, Predrag T Banković, Dalibor M Stanković, Miloš Ognjanović, Bratislav V Antić (2019)Herein we report effects of partial substitution of Fe3+ by Y3+ in magnetite (Fe3O4) on morphology and inorganic arsenic species adsorption efficiency of the Fe3−xYxO4 nanoparticles formed. The series of Fe3−xYxO4 (x=0.00, 0.042 and 0.084, labeled as Y00, Y05 and Y10, respectively) was synthesized using co-precipitation followed by microwave-hydrothermal treatment (MW) at 200°C. With increase of yttrium content(xvalue), both the morphological inhomogeneity of the samples and the fraction of spinel nanorods as compared to spinel pseudospherical particles increased. By ...Biljana P Dojčinović, Boštjan Jančar, Lotfi Bessais, Aleksandar Kremenović, Nataša P Jović-Jovičić, Predrag T Banković, Dalibor M Stanković, Miloš Ognjanović, Bratislav V Antić. "Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species" in Nanotechnology, IOP Publishing (2019). https://doi.org/10.1088/1361-6528/ab3ca2
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Pleistocenski sisari iz jame Propas u Činiglavcima kod Pirota
Dimitrijević, V., Bogićević Katarina, Gajović, V., Vlastić Stefan. "Pleistocenski sisari iz jame Propas u Činiglavcima kod Pirota" in Zbornik radova 7. simpozijuma o zaštiti karsta, Bela Palanka, 2013. / [organizator] Akademski speleološko-alpinistički klub = Proceedings [of] 7th Symposium on Karst Protection, Beograd:Akademski speleološko-alpinistički klub (2013): 83-88
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Влияние русских иммигрантов в развитие геологии в Сербии
Banjac Nenad, Dulić Ivan (2010)Banjac Nenad, Dulić Ivan. "Влияние русских иммигрантов в развитие геологии в Сербии" in Зборник радова 15. конгреса геолога Србије са међународним учешћем, Београд, [26-29 мај] 2010. = Proceedings of the 15th Congress of Geologists of Serbia with International Participation, Belgrade [26-29 May] 2010, Belgrade:Serbian Geological Society (2010): 695-698
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Нумеричке симулације процеса конвекције у Земљином омотачу
Станковић Никола, Цветков Весна, Цветковић Владица. "Нумеричке симулације процеса конвекције у Земљином омотачу" in Српски геолошки конгрес, Врњачка Бања, 17‐20. мај 2020 no. 2, Врњачка Бања:Српско геолошко друштво (2018): 726-731
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Примена геоелектричних атрибута добијених сондирањем укрштеним квадратним распоредом електрода на подручју „Пударске колибе“ у источној Србији
Сретеновић Бранислав, Васиљевић Ивана, Цветков Весна. "Примена геоелектричних атрибута добијених сондирањем укрштеним квадратним распоредом електрода на подручју „Пударске колибе“ у источној Србији" in Техника 65 no. 4, Београд:Савез инжињера и техничара Србије (2014): 604-609
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Novi paleomagnetski podaci iz tercijarnih magmatita Fruške gore, Srbija
Cvetkov Vesna, Lesić Vesna, Vasković Nada. "Novi paleomagnetski podaci iz tercijarnih magmatita Fruške gore, Srbija" in Geološki anali Balkanskoga poluostrva no. 73, Beograd:Rudarsko-geološki fakultet (2012): 99-108. https://doi.org/10.2298/GABP1273099C
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Depth estimation of archeological objects using Euler 3D deconvolution of magnetic data
Vesna Cvetkov, Ilija Vasiljević, Mirko Petković. "Depth estimation of archeological objects using Euler 3D deconvolution of magnetic data" in 5. Hrvatski geološki kongres. Abstract Book 5th Croatian Geological Congress, Hrvatski geološki institut (2015)
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Spatial distribution of the Demir Kapija (Macedonia) ophiolite based on geomagnetic data
Petrović Dragana, Cvetkov Vesna, Cvetković Vladica. "Spatial distribution of the Demir Kapija (Macedonia) ophiolite based on geomagnetic data" in Tehnika 2 no. 71, Beograd :Savez inženjera i tehničara (2016): 215-220. https://doi.org/DOI : 10.5937/tehnika160221
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Prostorni položaj ofiolitskog kompleksa Demir Kapije (Makedonija) utvrđen na osnovu geomagnetskih podataka
Petrović Dragana, Cvetkov Vesna, Cvetković Vladica. "Prostorni položaj ofiolitskog kompleksa Demir Kapije (Makedonija) utvrđen na osnovu geomagnetskih podataka" in Tehnika no. 2, :Savez inženjera i tehničara Srbije (2016): 215-220. https://doi.org/10.5937/tehnika1602215P
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Spatial distribution of the Demir Kapija (FYR Macedonia) Ophiolite based on geomagnetic data
Petrović Dragana, Cvetkov Vesna, Cvetković Vladica. "Spatial distribution of the Demir Kapija (FYR Macedonia) Ophiolite based on geomagnetic data" in Tehnika special edition, :Savez inženjera i tehničara Srbije (2017): 43-48. https://doi.org/10.5937/tehnika1602215P
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Numerical simulation of the Late Jurassic closure of the Vardar Tethys
... Vardar Tethys Nikola Stanković, Vesna Cvetkov, Vladica Cvetković Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Numerical simulation of the Late Jurassic closure of the Vardar Tethys | Nikola Stanković, Vesna Cvetkov, Vladica Cvetković | EGU General Assembly ...
... under the Creative Commons Attribution 4.0 License. Numerical simulation of the Late Jurassic closure of the VardarTethys Nikola Stanković, Vesna Cvetkov, and Vladica Cvetković University of Belgrade, Faculty of Mining and Geology, Serbia (nikola.stankovic@rgf.rs) We report updated results of our ongoing ...Nikola Stanković, Vesna Cvetkov, Vladica Cvetković. "Numerical simulation of the Late Jurassic closure of the Vardar Tethys" in EGU General Assembly 2021, Copernicus GmbH (2021). https://doi.org/10.5194/egusphere-egu21-9893
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2D Numerical Simulation of Intraoceanic Subduction during the Upper Jurassic Closure of the Vardar Tethys
... Nikola Stanković, Vesna Cvetkov, Vladica Cvetković Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] 2D Numerical Simulation of Intraoceanic Subduction during the Upper Jurassic Closure of the Vardar Tethys | Nikola Stanković, Vesna Cvetkov, Vladica Cvetković | ...
... under the Creative Commons Attribution 4.0 License. Numerical simulation of the Late Jurassic closure of the VardarTethys Nikola Stanković, Vesna Cvetkov, and Vladica Cvetković University of Belgrade, Faculty of Mining and Geology, Serbia (nikola.stankovic@rgf.rs) We report updated results of our ongoing ...Nikola Stanković, Vesna Cvetkov, Vladica Cvetković. "2D Numerical Simulation of Intraoceanic Subduction during the Upper Jurassic Closure of the Vardar Tethys" in EGU General Assembly 2020, Copernicus GmbH (2020). https://doi.org/10.5194/egusphere-egu2020-5919
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Coordinated Miocene clockwise rotation of the Vardar Zone and the Drina-Ivanjica unit
Máté Velki, Emő Márton, Vesna Cvetkov. "Coordinated Miocene clockwise rotation of the Vardar Zone and the Drina-Ivanjica unit" in XVIII Kongres geologa Srbije, Divčibare, Srbija (01-04.2022.), Srpsko geološko društvo (2022)
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Improvement of 1D geoelectric sounding by narrowing the equivalence range and identification, quantification and reduction of lateral effects using the tri-potential technique
Filip Arnaut, Branislav Sretenović, Vesna Cvetkov. "Improvement of 1D geoelectric sounding by narrowing the equivalence range and identification, quantification and reduction of lateral effects using the tri-potential technique" in Geofizika, University of Zagreb, Faculty of Science, Department of Geophysics (2022). https://doi.org/10.15233/gfz.2022.39.15