Претрага
241 items
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Substitution reactions of some novel sterically hindered monofunctional Pd(II) complexes
Reakcije supstitucije monofunkcionalnih kompleksa [(TLtBu)PdCl]+ i [Pd(tpdm)Cl]+, gde je TLtBu = 2,6-bis[(1,3-di-terc-butilimidazolin-2-imino)metil]piridin i tpdm = terpiridindimetan, sa nukleofilima kao što su: tiourea, I−, Br−, NO2−, piridin i dimetil-sulfoksid (DMSO) proučavani su u 0,1 M vodenom rastvoru NaClO4 u prisustvu 10 mM NaCl. Reakcije su sprovedene na tri različite temperature (288, 298 i 308 K) korišćenjem tehnike zaustavljenog protoka na različitim temperaturama. Reakcije supstitucije su praćene pod uslovima pseudo prvog reda sa velikim viškom nukleofila. Dobijeni rezultati pokazuju da kompleks ...... purification. The complexes [(TLtBu)PdCl]+ and [Pd(tpdm)Cl]+ were prepared according to published procedures [23,24]. Prepara- 0020-1693/$ - see front matter � 2011 Elsevier B.V. All rights reserved. doi:10.1016/j.ica.2011.11.031 Abbreviations: TLtBu , 2,6-bis[(1,3-di-tert-butylimidazolin-2-imino)methyl]pyri- ...
... Corresponding author. Tel.: +381 (0) 34300262; fax: +381 (0) 34335040. E-mail address: bugarcic@kg.ac.rs (Z.D. Bugaréic). 0020-1693/$ - see front matter © 2011 Elsevier B.V. All rights reserved. doi:10.1016/j.ica.2011.11.031 [18]. Furthermore, Pd(II) complexes generally formulated as trans- [PdX2(isn)2] ...Aleksandar Mijatović, Jovana Bogojeski, Biljana Petrović, Živadin D. Bugarčić. "Substitution reactions of some novel sterically hindered monofunctional Pd(II) complexes" in Inorganica Chimica Acta, Elsevier BV (2011). https://doi.org/10.1016/j.ica.2011.11.031
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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 ...... the runout analysis of rapid flow slides, debris flows, and avalanches. Canadian Geotechnical Journal 32 ( 4):610-623. Iverson RM (1997) The physics of debris flows. Reviews of Geophysics 35 (3): 245-296. Jakob M, Hungr O (2005) Debris-flow hazards and related phenomena. Blondel, P. Springer ...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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Пројекат ПРИЗМА: Карактеризација и технолошки поступци за рециклажу и поновну употребу флотацијске јаловине рудника „Рудник“
Владимир Симић, Стефан Петровић, Филип Арнаут, Весна Цветков, Милена Костовић, Драган Радуловић, Јовица Стојановић, Владимир Јовановић, Дејан Тодоровић, Нина Николић, Јелена Сенћански, Грозданка Богдановић, Драгана Мариловић (2024)Владимир Симић, Стефан Петровић, Филип Арнаут, Весна Цветков, Милена Костовић, Драган Радуловић, Јовица Стојановић, Владимир Јовановић, Дејан Тодоровић, Нина Николић, Јелена Сенћански, Грозданка Богдановић, Драгана Мариловић. "Пројекат ПРИЗМА: Карактеризација и технолошки поступци за рециклажу и поновну употребу флотацијске јаловине рудника „Рудник“" in Записници Српског геолошког друштва, Београд : Српско геолошко друштво (2024)
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Nelinearno dinamičko modelovanje potresa izazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija
Srđan D. Kostić (2013-11-04)U ovoj disertaciji, cilj istraživanja bio je određivanje dinamičkih svojstava potresaizazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija.Analiza potresa izvedena je sa dva aspekta – u prvom delu istraživanja izučavane suvremenske serije oscilovanja tla za vreme potresa, a u drugom delu vršena je analizastabilnosti fenomenološkog Baridž-Knopof modela bloka sa oprugom. Vremenske serijeoscilovanja tla proučavane su primenom postupka analize surogat podataka, kao ikorišćenjem metoda analize nelinearnih vremenskih serija (primena teoreme orazvijanju skalarne vremenske serije). Analiza vremenskih serija izvedena je ...potres, naponsko stanje, podzemne prostorije, bifurkacije, vremenskaserija, deterministički haos, stohastičnost, perturbacije, vremensko kašnjenje, jačina trenja... 96. Landa P.S., Rosenblum M.G.1989. Method for evaluating the embedding dimension of an attractor from experimental results. Soviet Physics - Technical Physics 34, 6-10. 197 97. Lapusta, N., Rice, J.R. 2003. Nucleation and early seismic propagation of small and large events in a crustal ...
... S. S., Zaslavskii, G. M. 1991. Classical nonlinear dynamics and chaos of rays in problems of wave propagation in inhomogeneous media, Soviet Physics Uspekhi 34, 645-664. 3. Adams, J., Bell, J.S. 1991. Crustal stress in Canada. In: Slemmons, D.B., Engdahl, E.R., Zoback, M.D., Blackwell, D.D. ...
... state-variable friction sliders and the effect of elastic interactions. In: Rundle, J.B., Turcotte, D.L., Klein, W. (eds.) Geocomplexity and the physics of earthquakes, American Geophysical Union, 5-26 10. Beeler, N.M., Tullis, T.E., Weeks, J.D. 1994. The roles of time and displacement in the ...Srđan D. Kostić. "Nelinearno dinamičko modelovanje potresa izazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2013-11-04)
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Nelinearno dinamičko modelovanje potresa izazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija
Srđan D. Kostić (2013-11-04)U ovoj disertaciji, cilj istraživanja bio je određivanje dinamičkih svojstava potresaizazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija.Analiza potresa izvedena je sa dva aspekta – u prvom delu istraživanja izučavane suvremenske serije oscilovanja tla za vreme potresa, a u drugom delu vršena je analizastabilnosti fenomenološkog Baridž-Knopof modela bloka sa oprugom. Vremenske serijeoscilovanja tla proučavane su primenom postupka analize surogat podataka, kao ikorišćenjem metoda analize nelinearnih vremenskih serija (primena teoreme orazvijanju skalarne vremenske serije). Analiza vremenskih serija izvedena je ...potres, naponsko stanje, podzemne prostorije, bifurkacije, vremenskaserija, deterministički haos, stohastičnost, perturbacije, vremensko kašnjenje, jačina trenja... 96. Landa P.S., Rosenblum M.G.1989. Method for evaluating the embedding dimension of an attractor from experimental results. Soviet Physics - Technical Physics 34, 6-10. 197 97. Lapusta, N., Rice, J.R. 2003. Nucleation and early seismic propagation of small and large events in a crustal ...
... S. S., Zaslavskii, G. M. 1991. Classical nonlinear dynamics and chaos of rays in problems of wave propagation in inhomogeneous media, Soviet Physics Uspekhi 34, 645-664. 3. Adams, J., Bell, J.S. 1991. Crustal stress in Canada. In: Slemmons, D.B., Engdahl, E.R., Zoback, M.D., Blackwell, D.D. ...
... state-variable friction sliders and the effect of elastic interactions. In: Rundle, J.B., Turcotte, D.L., Klein, W. (eds.) Geocomplexity and the physics of earthquakes, American Geophysical Union, 5-26 10. Beeler, N.M., Tullis, T.E., Weeks, J.D. 1994. The roles of time and displacement in the ...Srđan D. Kostić. "Nelinearno dinamičko modelovanje potresa izazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2013-11-04)
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Numerical modeling of Selanac debris flow propagation using SPH code
The Selanac debris flow is a very huge event triggered after extreme rainfall caused by Cyclone Tamara activity in the Republic of Serbia in May 2014. The Selanac case study was already modelling in different programs using Voellmy rheology assumptions like RAMMS software. In this paper research are focusing particularly on the process of debris flowing from initiation zone to main deposition area using Geoflow SPH two-phase model considering frictional rheology law. Main rheological parameters are back-calculated using also ...... runout analysis of rapid flow slides, debris flows, and avalanches’’. Canadian Geotechnical Journal 32 (4):610-623. Iverson, R.M. (1997). ‘’The physics of debris flows’’. Reviews of Geophysics 35 (3): 245-296. Krušić, J., Abolmasov, B. and Samardžić-Petrović, M. (2019).‘’Influence of DEM resolution ...Jelka Krušić, Biljana Abolmasov, Miloš Marjanović, Manuel Pastor, Saeid M. Tayyebi . "Numerical modeling of Selanac debris flow propagation using SPH code" in SCG-XIII International Symposium on Landslides. Cartagena, Colombia- February 22-26, 2021, International Society for Soil Mechanics And Geotechnical Engineering (2021)
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Proučavanje razvića Bihaćkog i Cazinskog basena primenom gravimetrijskih podataka
Bihaćki i Cazinski baseni su neogeni baseni, koji pripadaju spoljašnjim Dinaridima i formirani su tokom kasne faze razvoja Dinarida. Ovi baseni su od posebnog interesa zbog svoje geološke prošlosti i potencijalnih strukturnih karakteristika. U istraživanju, primenjeni su gravimetrijski podaci u clju boljeg razumevanja evolucije ovih basena. Primenom različitih postupaka matematičkih transformacija na gravimetrijskim podacima može se ustanoviti gravitacioni uticaj neogenih basena male gustine i mogu se detektovati strukture, koje su potencijalno vezane za njihovo formiranje. U ovom istraživanju, analiza ...Snežana M. ignjatović, Ivana M. Vasiljević, Nevena R. Andrić-Tomašević, Ana S. Mladenović. "Proučavanje razvića Bihaćkog i Cazinskog basena primenom gravimetrijskih podataka" in Tehnika, Beograd : Savez inženjra i tehničara Srbije (2024). https://doi.org/10.5937/tehnika2403287I
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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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Испитивање магнетске сусцептибилности прашине антропогеног порекла
... jedinjenja ili u reakciji sa sastavnim delovima atmosfere. Većina primarnih zagađujućih jedinjenja, uključujući i suspendovane čestice (particulate matter – PM) su posledica ljudskih aktivnosti [1]. Postoji određena vrsta povezanosti teških metala sa magnetskom susceptibilnošću , tj. merenja mogu ...Дубравка Новичић, Весна Цветков, Весна Дамњановић. "Испитивање магнетске сусцептибилности прашине антропогеног порекла" in VII Меморијални научни скуп из заштите животне средине доцент др Милена Далмација Нови Сад, 01-02. април 2019, Природно-математички факултет, Департман за хемију, биохемију и заштиту животне средине (2019)
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Towards Automatic Definition Extraction for Serbian
U radu su prikazani preliminarni rezultati automatske ekstrakcije kandidata za definicije rečnika iz nestrukturiranih tekstova na srpskom jeziku u cilju ubrzanja razvoja rečnika. Definicije u rečniku Srpske akademije nauka i umetnosti (SANU) korišćene su za modelovanje različitih tipova definicija (opisnih, gramatičkih, referentnih i sinonimskih) koje imaju različite sintaksičke i leksičke karakteristike. Korpus istraživanja sastoji se od 61.213 definicija imenica, koje su analizirane korišćenjem morfoloških e-rečnika i lokalnih gramatika implementiranih kao pretvarači konačnih stanja u paketu za obradu korpusa otvorenog ...... we created a corpus of 25 primary and secondary school textbook covering the following domains: biology, history, logic, music, computer science, physics and design and technology (technological education). The biology domain is covered by seven textbooks: one for primary school, four for high school ...
... is represented by four primary school textbooks; computer science is represented by one primary school textbook and tree high school ones, while physics is represented by one primary school textbook. General technique is represented by three textbooks for professional/vocational technical schools ...Ranka Stanković, Cvetana Krstev, Rada Stijović, Mirjana Gočanin, Mihailo Škorić. "Towards Automatic Definition Extraction for Serbian" in Proceedings of the XIX EURALEX Congress of the European Assocition for Lexicography: Lexicography for Inclusion (Volume 2). 7-9 September (virtual), Democritus University of Thrace (2021)
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The effect of finite driving rate on avalanche distributions
Statistics, Probability and Uncertainty,Statistics and Probability,Statistical and Nonlinear PhysicsSonja Radić, Sanja Janićević, Dragutin Jovković, Đorđe Spasojević. "The effect of finite driving rate on avalanche distributions" in Journal of Statistical Mechanics: Theory and Experiment, IOP Publishing (2021). https://doi.org/10.1088/1742-5468/ac1f12
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Mesozoic carbonate rocks in Serbia used as dimension stone
Vesna Matović, Tijana Vojnović Ćalić (2016)The building industry in Serbia uses, to a great extent, imported natural stone for architectural purposes. The significance of local deposits, particularly limestones, is not adequately perceived despite the country’s abundance of these valuable resources. Therefore, this study focuses on Serbia’s Mesozoic carbonate rocks, specifically on the deposits of four selected quarries: Klisura, Skrzut, Struganik, and Tisnica. The quality and prospects of the application of these limestones has not yet been the subject of a detailed, comprehensive investigation. Therefore, ...... wackestone microfacies) —— primarily composed of microcrystalline calcite, whereas non-carbonaceous compounds include clay minerals, organic matter, and subordinated silty material. According to the CaCOxa content, micrite lime- stone refers to pure limestone, clayey limestone (70–85 %), ...
... in biomicrite and reduced to a minimum in pure micritic layers. The clayey matrix of nodular limestones has a variable amount of ferruginous matter that reveals various colours (from grey to red). Intrabiosparrudite (rudstone microfacies; 96–-97 % CaCO) are made of simple and complex intraclasts ...Vesna Matović, Tijana Vojnović Ćalić. "Mesozoic carbonate rocks in Serbia used as dimension stone" in Bulletin of Engineering Geology and the Environment, Springer Science and Business Media LLC (2016). https://doi.org/10.1007/s10064-015-0722-0
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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... University of Ljubljana, Jamova cesta 2, Ljubljana, 1000, Slovenia, fInstitute of Mathematics, Physics and Mechanics, Jadranska 19, Ljubljana, 1000, Slovenia, and gStructure Analysis, Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 1999/2, Praha 8, 18221, Czech Republic ...
... A. & Gibbs, G. V. (1979). Phys. Chem. Miner. 4, 11–21. Mitric, M., Antic, B., Balanda, M., Rodic, D. & Napijalo, M. L. (1997). J. Phys. Condens. Matter, 9, 4103–4111. Momma, K. & Izumi, F. (2011). J. Appl. Cryst. 44, 1272–1276. Morrison, G., Latshaw, A. M., Spagnuolo, N. R. & Zur Loye, H.-C. (2017) ...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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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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Hydrochemical changes and groundwater grouping data by multivariate statistical methods within one karst system: recharge–discharge zone (Eastern Serbia case study)
Ljiljana Vasić, Dragana Živojinović, Vladana Rajaković-Ognjanović. "Hydrochemical changes and groundwater grouping data by multivariate statistical methods within one karst system: recharge–discharge zone (Eastern Serbia case study)" in Carbonates and Evaporites, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s13146-019-00548-6
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An oilfield in Libya: A new model to enhance waste water disposal
Dušan Danilović, Vesna Karović Maričić, Nori Elhaddad, Branko Leković. "An oilfield in Libya: A new model to enhance waste water disposal" in Energy & Environment (2016)
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Heavy metals in lignite and soil of Kostolac-Kovin coal basin, eastern Serbia - comparative analysis with selected cities in Serbia, region, Europe and world
Bogoljub Vučković, Bojan Dimitrijević (2023)The Kostolac-Kovin coal basin with an area of 320 km2, with 5 separate layers of coal and with a total of about 5.7 Bt of geological resources and reserves represents an exceptional potential for coal production in Serbia. The coal resources listed in this way are not fully exploitable, but they represent potential for consideration. In this paper, we deal with the geochemical characteristics of coal seams and perform a comparative analysis of coal affectation on the environment. With ...... the geochemical conditions during deposition, and subsequently diagenesis of coal, were different for coal compared to sediments. That is, the plant matter that formed the coal layers did not contain increased conccntrations of HM, and this is reflected in their contents in the coal. Also, in the process ...Bogoljub Vučković, Bojan Dimitrijević. "Heavy metals in lignite and soil of Kostolac-Kovin coal basin, eastern Serbia - comparative analysis with selected cities in Serbia, region, Europe and world" in 9th International Conference Mining and Environmental Protection, 24–27. May 2023, Sokobanja, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet (2023)
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Legal framework for recultivation of degraded areas caused by mining exploitation
Radmila Gaćina (2023)Prilikom površinske i podzemne eksploatacije uglja eksploatacioni sistemi oštećuju veće ili manje površine zemljišta. Iskustva pokazuju da su oštećenja zemljišta znatno veća kod površinske eksploatacije, gde je prostora degradiran ne samo u konturi rudnika i okoline, već se promene takođe dešavaju u prirodnom okruženju. U članku su predstavljeni rezultati studije zakonskih okvira rekultivacije u nekim zemljama sveta i u Srbiji. Praktično iskustvo rekultivacije pokazalo je da iskorišćenje i devastacija tokom rudarske aktivnosti predstavljaju opasnost ne samo za pogođena ...... holder of the exploitation, the costs of rehabilitation and recultivation of the land on which the exploitation was carried out will be covered as a matter of priority from the liquidation or bankruptcy estate. Proposals for improved legal regulations in Serbia: • Toimprove or specify certain norms ...Radmila Gaćina. "Legal framework for recultivation of degraded areas caused by mining exploitation" in Underground mining engineering, Belgrade : University of Belgrade - Faculty of Mining and Geology (2023). https://doi.org/10.5937/podrad2342027G
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Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду
... An integrated study of ther- mal treatment effects on the microstructure and magnetic properties of Zn- ferrite nanoparticles, Journal of Physics – Condensed Matter, 2013. 185. Štirbanović Z., Miljanović I., Marković Z.: Application of rough set theory for choosing optimal location for flotation tailings ...
... Excitable Systems. Journal of Statistical Physics, vol. 145, br. 1, str. 175–186. VASOVIĆ N., BURIĆ N., TODOROVIĆ K., GROZDANOVIĆ I., 2012: Synchronization of the minimal models of bursting neurons coupled by delayed chemical or electrical synapses. Chinese Physics B, vol. 21, br. 1. GROZDANOVIĆ I ...
... materials science and solid-state che- mistry and physics, 2012. 168. Vasović N., Burić N., Todorović K., Grozdanović I.: Synchronization of the minimal models of bursting neurons coupled by delayed chemical or electrical synapses, Chinese physics B, 2012. 169. Pačevski A., Moritz R., Kouzmanov ...главни и одговорни уредник Душан Поломчић. Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду, Београд : Универзитет у Београду, Рударско-геолошки факултет, 2016
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Effects of external noise on threshold-induced correlations in ferromagnetic systems
Dragutin Jovković, Sanja Janićević, Svetislav Mijatović, Lasse Laurson, Đorđe Spasojević. "Effects of external noise on threshold-induced correlations in ferromagnetic systems" in Physical Review E, American Physical Society (APS) (2021). https://doi.org/10.1103/PhysRevE.103.062114