Претрага
2944 items
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Rezultati ispitivanja parametara čvrstoće i dinamičkih svojstava mermera i mogućnost njihove korelacije
Ispitivanja stena kao radne sredine, odnosno materijala sa kojim se gradi, na kome se gradi i u kome se gradi, svojom složenošću zahteva njeno svestrano izučavanje po velikom broju parametara. Zadatak Mehanike stena je da što bolje upozna ponašanje stenske mase i njenu otpornost na dejstvo pritiska, zatezanja i smicanja, kao i dinamičkih svojstava. Poznavanje navedenih parametara i njihova korelacija omogućavaju pouzdaniji izbor parametara za projektovanje danas sve zahtevnijih uslova kako podzemne, tako i površinske eksploatacije. U ovom radu ...mermer, jednoosna čvrstoća na pritisak, čvrstoća na istezanje, brzina longitudinalnih elastičnih talasa, korelacijaJelena Majstorović-Necković, Vladimir Čebašek, Veljko Rupar. "Rezultati ispitivanja parametara čvrstoće i dinamičkih svojstava mermera i mogućnost njihove korelacije" in 11. Međunarodna konferencija “Ugalj i kritični materijali" CCM 2023, Zlatibor, 11-14. oktobar 2023., Beograd : Jugoslovenski komitet za površinsku eksploataciju (2023)
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Validation of vulnerability assessment by means of the Time Dependent, Model: case study from the Slovenian karst catchment
Groundwater vulnerability assessment methods are continuously being developed and existing methods are very often modified to provide better simulation of natural protection conditions and more objective results. Most frequently used methods are based on calculation of predefined parameters influencing water infiltration and underground flow, which can often lead to bias conclusions related to vulnerability evaluations. Some other methods, like the Time Dependent Model (TDM) are based on an approach, where parametrization is obtained at the final stage of the ...Ocena ranjivosti podzemnih voda, karstne podzemne vode, TDM metoda, delineacija sanitarnih zona, Slovenački karstVladimir Živanović, Nataša Ravbar, Igor Jemcov. "Validation of vulnerability assessment by means of the Time Dependent, Model: case study from the Slovenian karst catchment" in Proceedings of IAH2019, the 46th Annual Congress of the International Associaton of Hydrogeologists, Málaga (Spain), September 22-27, 2019, International Association of Hydrogeologists (IAH) (2019)
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Threshold-induced correlations in the Random Field Ising Model
... earthquakes16–19 to neu- ronal networks20, from compression of wood samples21 and porous materials22–24 to deformation and fracture of stressed materials25–27, to name just a few. One very important common feature of these systems is that such avalanche-like signals appear to exhibit complex temporal ...
... earthquakes'*” to neu- ronal networks”, from compression of wood samples! and porous materials**-~4 to deformation and fracture of stressed materials*>-*’, to name just a few. One very important common feature of these systems is that such avalanche-like signals appear to exhibit complex temporal correlations ...
... (2016). 21. Mäkinen, T., Miksic, A., Ovaska, M. & Alava, M. J. Avalanches in Wood Compression. Phys. Rev. Lett. 115, 055501 (2015). 22. Baró, J. et al. Statistical Similarity between the Compression of a Porous Material and Earthquakes. Phys. Rev. Lett. 110, 088702 (2013). 23. Navas-Portella, V., Corral ...Sanja Janićević, Dragutin Jovković, Lasse Laurson, Đorđe Spasojević. "Threshold-induced correlations in the Random Field Ising Model" in Scientific Reports, Springer Science and Business Media LLC (2018). https://doi.org/10.1038/s41598-018-20759-6
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Geothermal potential, chemical characteristic and utilization of groundwater in Serbia
To collect and unify data about all geothermal resources in Serbia, a database was formed. The database allows us to perceive the geothermal resources of Serbia and their potential for utilization. Based on the data available in the geothermal database, the estimated temperatures of reservoirs, heat power, and geothermal energy utilization were calculated. The database contains 293 geothermal records (springs, boreholes) registered at 160 locations, with groundwater temperatures in the range between 20 and 111 °C. The maximum expected ...Geothermal database, Geothermal resources, Geothermal potential, Hydrochemistry, Hierarchical cluster analysis, SerbiaTanja Petrović Pantić, Katarina Atanasković Samolov, Jana Štrbački, Milan Tomić. "Geothermal potential, chemical characteristic and utilization of groundwater in Serbia" in Environmental Earth Sciences, Springer Link (2021). https://doi.org/https://doi.org/10.1007/s12665-021-09985-w
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Jeleč grad- još nepriznati objekat geonasleđa
Остаци средњовековног града Јелеча на једном од врхова планине Рогозне (1262 m), по неким веровањима представљаju купу угашеног вулкана. Рогозна je позната по појавама скарновске Cu–Au минерализације, а трагови рударске активности и важних путева још од античких времена и даље постоје у непосредној околини. О томе сведочи и османски назив за Рогозну: Gümüş Dağ (Сребрна планина). Време изградње Јелеча је непознато. Постоје индиције да је постојао још у 6. веку, али се помиње први пут средином 12. века. Поуздан податак ...Marija Radisavljević, Danica Srećković Batoćanin, Vladan Vidosavljević, Irena Kajtez. "Jeleč grad- još nepriznati objekat geonasleđa" in Zbornik apstrakata, 212. 18. Kongres geologa Srbije "Geologija rešava probleme", Divčibare, 01-04 jun 2022, Srpsko geološko društvo (2022)
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Photocatalytic degradation of textile dye with hydrothermally modified nanoanatase
Simović Bojana, Poleti Dejan, Kovač Sabina, Bjelajac Anđelika, Dapčević Aleksandra, Branković Goran (2015)Simović Bojana, Poleti Dejan, Kovač Sabina, Bjelajac Anđelika, Dapčević Aleksandra, Branković Goran. "Photocatalytic degradation of textile dye with hydrothermally modified nanoanatase" in 3rd Conference of the Serbian Society for Ceramic Materials 3rd Conference of the Serbian Society for Ceramic Materials 3rd Conference of the Serbian Society for Ceramic Materials, Beograd, Srbija :Institute for Multidisciplinary Research, University of Belgrade (2015): 82-82
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Application of the Fuzzy theory in the evaluation of operating parameters of auxiliary mechanization on open-cast coal mine, case study: pipelayers
Achieved operating parameters are the main indicator of the work quality and selection of mining machines. The effectiveness of a coal mine is correlated with the availability of basic and auxiliary machines. The main task of auxiliary machines in lignite mines is to achieve optimal working conditions. From an economic point of view, auxiliary machines generate up to 20% of the lignite mines' total costs. These are the primary reasons for analyzing their current work and making decisions in ...Stevan Djenadić, Miloš Tanasijević, Filip Miletić, Predrag Jovančić. "Application of the Fuzzy theory in the evaluation of operating parameters of auxiliary mechanization on open-cast coal mine, case study: pipelayers" in 8th Balkan Mining Congress, Belgrade, September 28-30, Rudarski instutut (2022)
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Influence of the organic complex concentration on adsorption of herbicide in organic modified montmorillonite
Kaluđerović Lazar, Tomić Zorica, Đurović Rada, Milošević Maja. "Influence of the organic complex concentration on adsorption of herbicide in organic modified montmorillonite" in Geophysical Research Abstracts 18, Vienna, Austria :Copernicus Publications (2016)
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Physical-chemistry characterization of the modified limestone
Mihajlović Slavica, Vučinić Dušica, Sekulić Živko, Jovanović Vladimir, Radulović Dragan. "Physical-chemistry characterization of the modified limestone" in Proceedings of 5th BALKAN MINING CONGRESS, Ohrid, Macedonia: (2013): 386-391
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Application of novel Zn-ferrite modified glassy carbon paste electrode as a sensor for determination of Cd(II) in waste water
Stanković Dalibor M, Skrivanj Sandra, Savić Nenad, Nikolić Aleksandar, Vulić Predrag, Manojlović Dragan (2014)Stanković Dalibor M, Skrivanj Sandra, Savić Nenad, Nikolić Aleksandar, Vulić Predrag, Manojlović Dragan. "Application of novel Zn-ferrite modified glassy carbon paste electrode as a sensor for determination of Cd(II) in waste water" in Electroanalysis 26 no. 7, Hoboken, NJ:John Wiley & Sons (2014): 1536-1543. https://doi.org/10.1002/elan.201400095
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Примена дискретног ауторегресивно – кросрегресивног модела покретног просека за прогнозу дневних вредности издашности врела Мокра и Дивљана
Бранислав Петровић, Вељко Мариновић (2021)Аутокорелациона и кроскорелациона анализа временских серија падавина и истицања подземних вода карстних врела Мокра и Дивљана (Сува планина, ЈИ Србија) извршена је ради формирања стохастичког ауторегресивно-кросрегресивног модела (ARCR) и прогнозе дневних вредности издашности. Будући да је тешко предвидети просторну дистрибуцију подземних вода у оквиру карстног хидрогеолошког система услед постојања хетерогености и анизотропности карстне издани (тј. кречњачких стена у овом случају), апликативност детерминистичких модела је минимизирана, па је примена стохастичког модела у овом случају учинковитија. Овим моделом могуће је дати ...карстно врело, стохастички модел, анализа временских серија, ауторегресивно-кросрегресивни модел (ARCR)Бранислав Петровић, Вељко Мариновић. "Примена дискретног ауторегресивно – кросрегресивног модела покретног просека за прогнозу дневних вредности издашности врела Мокра и Дивљана" in Записници Српског геолошког друштва, Српско геолошко друштво (2021)
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Crystallographic, spectroscopic, thermal and computational studies of polymeric cobalt(II)–mellitate complex with 2,2′-bipyridine
Orange single crystals of new polymeric cobalt(II) complex {[Co(bipy)(H2O)4]2[Co(μ-mell)(H2O)2]·10H2O}n, 1, were synthesized by slow evaporation method at room temperature (bipy = 2,2′-bipyridine, mell = hexaanion of mellitic acid) and its crystal structure was determined by single-crystal X-ray diffraction. The complex 1 was characterized based on elemental analysis, FTIR spectroscopy and thermal (TG/DTA) analysis followed by computational analysis of noncovalent interactions and quantum chemical calculations of interaction energies. In 1, two crystallographically different Co(II) atoms adopt a deformed octahedral geometry, ...Lidija Radovanović, Dušan P. Malenov, Marko V. Rodić, Aleksandar Kremenović, Jelena Rogan. "Crystallographic, spectroscopic, thermal and computational studies of polymeric cobalt(II)–mellitate complex with 2,2′-bipyridine" in Journal of Molecular Structure, Elsevier BV (2021). https://doi.org/10.1016/j.molstruc.2021.132202
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Preliminary impact assessment of No2 emission from a heating plant on air pollution: case of Zemun, Serbia
The aim of this paper is to provide a preliminary evaluation of the impact caused by NO2 emissions from a heating plant on the local air quality. To model the spatial distribution of NO2 emissions from the heating plant, the AERMOD model was employed. The evaluation was conducted by analyzing and contrasting the simulated NO2 concentration from the heating plant with the overall NO2 concentration recorded at the nearest monitoring station over the entire heating season. The study focused ...Boban Pavlović, Uroš Pantelić, Marija Živković, Dejan Ivezić. "Preliminary impact assessment of No2 emission from a heating plant on air pollution: case of Zemun, Serbia" in Environmental Engineering and Management Journal (2023). https://doi.org/10.30638/eemj.2023.086
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PVC mixtures’ mechanical properties with the addition of modified calcite as filler
Mihajlović Slavica, Sekulić Živko, Vučinić Dušica, Jovanović Vladimir, Kolonja Božo. "PVC mixtures’ mechanical properties with the addition of modified calcite as filler" in Hemijska Industrija 66 no. 5, Beograd:Savez hemijskih inženjera (2012): 787-794. https://doi.org/10.2298/HEMIND111115025M
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Mafic alkaline metasomatism in the lithosphere underneath East Serbia: Evidence from the study of xenoliths and the host alkali basalts
Effects of mafic alkaline metasomatism have been investigated by a combined study of the East Serbian mantle xenoliths and their host alkaline rocks. Fertile xenoliths and tiny mineral assemblages found in depleted xenoliths have been investigated. Fertile lithologies are represented by clinopyroxene (cpx)-rich lherzolite and spinel (sp)-rich olivine websterite containing Ti–Al-rich Cr-augite, Fe-rich olivine, Fe–Al-rich orthopyroxene and Al-rich spinel. Depleted xenoliths, which are the predominant lithology in the suite of East Serbian xenoliths, are harzburgite, cpx-poor lherzolite and rare ...Cvetković Vladica, Downes Hilary, Höck Volker, Prelević Dejan, Lazarov Marina. "Mafic alkaline metasomatism in the lithosphere underneath East Serbia: Evidence from the study of xenoliths and the host alkali basalts" in Geological Society Special Publication 337, London, United Kingdom :Geological Society (2010): 213-239. https://doi.org/10.1144/SP337.11
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Sensitive Determination of Copper on New Modified Glassy Carbon Paste Electrode
Škrivanj Sandra, Stanković M. Dalibor, Khan Muslim, Nikolić S. Aleksandar, Vulić Predrag, Manojlović D. Dragan (2015)Škrivanj Sandra, Stanković M. Dalibor, Khan Muslim, Nikolić S. Aleksandar, Vulić Predrag, Manojlović D. Dragan. "Sensitive Determination of Copper on New Modified Glassy Carbon Paste Electrode" in Analytical & Bioanalytical Electrochemistry 2 no. 7 (2015): 230-241
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Optimization and Analysis of Drilling and Blasting Parameters Using O-Pitblast Software
The development of modern technologies has enabled the application of specialized softwares in the field of mining through various segments and processes, including in works related to drilling and blasting. The application of specialized software for drilling and blasting with the use of modern technologies such as photogrammetry enabled more accurate data from the field for later processing. By processing data and creating a 3D model of the terrain for drilling and blasting works, it can obtain precise data, ...Stefan Milanović, Nikola Simić, Lazar Kričak, Milanka Negovanović, Nikola Đokić. "Optimization and Analysis of Drilling and Blasting Parameters Using O-Pitblast Software" in Podzemni radovi, Beograd : Rudarsko-geološki fakultet (2024)
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Synthesis, characterization, biomolecular interactions, molecular docking, and in vitro and in vivo anticancer activities of novel ruthenium(III) Schiff base complexes
Milica Međedović, Aleksandar Mijatović, Rada Baošić, Dejan Lazić, Žiko Milanović, Zoran Marković, Jelena Milovanović, Dragana Arsenijević, Bojana Stojanović, Miloš Arsenijević, Marija Milovanović, Biljana Petrović, Ana Rilak Simović (2023)In order to discover new anticancer drugs, novel ruthenium(III) complexes [Ru(L)Cl(H2O)], where L is tetradentate Schiff base bis(acetylacetone)ethylendiimine (acacen, 1), bis(benzoylacetone)ethylendiimine (bzacen, 2), (acetylacetone)(benzoylaceton)ethylendiimine (acacbzacen, 3), bis(acetylacetone)propylendiimine (acacpn, 4), bis(benzoylacetone)propylendiimine (bzacpn, 5) or (acetylacetone)(benzoylaceton)propylendiimine (acacbzacpn, 6), were synthesized. The complexes 1 – 6 were characterized by elemental analysis, molar conductometry, and by various spectroscopic techniques, such as UV–Vis, IR, EPR, and ESI-MS. Based on in vitro DNA/BSA experiments, complexes 2 (bzacen) and 5 (bzacpn) with two aromatic rings showed ...Milica Međedović, Aleksandar Mijatović, Rada Baošić, Dejan Lazić, Žiko Milanović, Zoran Marković, Jelena Milovanović, Dragana Arsenijević, Bojana Stojanović, Miloš Arsenijević, Marija Milovanović, Biljana Petrović, Ana Rilak Simović. "Synthesis, characterization, biomolecular interactions, molecular docking, and in vitro and in vivo anticancer activities of novel ruthenium(III) Schiff base complexes" in Journal of Inorganic Biochemistry, Elsevier BV (2023). https://doi.org/10.1016/j.jinorgbio.2023.112363
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Regional rockfall exposure assessment, experience from Serbia
Rockfalls are common in hilly and mountainous areas, especially along roads with engineered slopes and cuts. Such is the case for most of the state and local road routes in Central, Serbia, which was the subject in this case study. A road network of 276 km covering roughly 1700 km2 between the cities of Kraljevo, Čačak and Ivanjica is presented. Assessing of such wide areas needs to be conducted from large to site-specific scale, i.e., using GIS spatial tools ...Miloš Marjanović, Biljana Abolmasov, Uroš Đurić, Jelka Krušić, Snežana Bogdanović. "Regional rockfall exposure assessment, experience from Serbia" in 5th Regional symposium on landslides in Adriatic–Balkan Region, 23-26 March 2022, Faculty of Civil Engineering, University of Rijeka and Faculty of Mining, Geology and Petroleum Engineering, University of Zagreb (2022)
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An Experimental Investigation of the Environmental Risk of a Metallurgical Waste Deposit
Jasmina Dedić , Jelena Djokic , Jovana Galjak, Gordana Milentijević, Dragan Lazarevic, Živče Šarkočević, Milena Lekić (2022)The aim of this study is to investigate the environmental risk of long-term metallurgical waste disposal. The investigated site was used for the open storage of lead and zinc waste materials originating from a lead smelter and refinery. Even after remediation was performed, the soil in the close vicinity of the metallurgical waste deposit was heavily loaded with heavy metals and arsenic. The pollutants were bound in various compounds in the form of sulfides, oxides, and chlorides, as well ...Jasmina Dedić , Jelena Djokic , Jovana Galjak, Gordana Milentijević, Dragan Lazarevic, Živče Šarkočević, Milena Lekić. "An Experimental Investigation of the Environmental Risk of a Metallurgical Waste Deposit" in Minerals, MDPI, Basel, Switzerland. (2022). https://doi.org/10.3390/min12060661