Претрага
930 items
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Crystallography and Surface Oxidation of Stoichiometric Arsenopyrite from Šumadija-Kopaonik Pb-Zn/Polymetallic Ore District (Serbia)
Ivana Jelić, Aleksandar Pačevski, Aleksandar Kremenović, Aleš Šoster, Andreja Šestan, Janez Zavašnik (2023)The behaviour and stability of arsenopyrite largely depend on its crystal structure, but studies of crystallography and structural defects are scarce. For clarification, we investigated a series of natural arsenopyrite crystals from the polymetallic Pb-Zn-(±Cu,Ag,Au,Sb,Bi,W) Šumadija-Kopaonik ore district (Serbia) by powder X-ray diffraction (XRPD). Among them, samples from the Drenjak gold mineralisation showed near-stoichiometric FeAsS composition and were further investigated by conventional and high-resolution transmission electron microscopy methods. TEM revealed abundant planar crystallographic defects and epitaxial surface oxide layer ...Inorganic Chemistry, Condensed Matter Physics,General Materials Science, General Chemical Engineering, crystal structure, FeAsS, oxidation, TEM, XRPD... The statements, opinions and data contained in all publications are solely those of the individual author(s) and contributor(s) and not of MDPI and/or the editor(s). MDPI and/or the editor(s) disclaim responsibility for any injury to people or property resulting, from any ideas, methods, instructions ...
... 748(2) 5.684(2) 5.776(2) 112.06(2) 174.9(1) 1.63304(5) 34.187(1) 4.3Co Crystals 2023, 13, 278 4of11 “ e [] [ 5| A q Č— — - 5 a s| 3 H =- las t I 5 8 e S 8 o [ | o t 8|ua BLR š 8 – 8 8|3 3 š -L a l |j | | Š || || L w _A 5 10 15 2 25 3 3 4/”TR“R 4 5 7R 5 /7RO 60 6 7020[ Figure 2 ...
... standard element and line [20]. The calculated composition, mean of 16 spot analyses, was determined as (wt%): Fe 34, As 47, S 19 (sum 100); (at%): Fe 33.2, As 34.2, S 32.6; i.e., stoichiometric composition. The selected-area electron diffraction (SAED) pattern, recorded in the thin section of ...Ivana Jelić, Aleksandar Pačevski, Aleksandar Kremenović, Aleš Šoster, Andreja Šestan, Janez Zavašnik. "Crystallography and Surface Oxidation of Stoichiometric Arsenopyrite from Šumadija-Kopaonik Pb-Zn/Polymetallic Ore District (Serbia)" in Crystals, MDPI AG (2023). https://doi.org/10.3390/cryst13020278
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Specifičnosti fundiranja u lesnim naslagama – objekat Poreska uprava Zemun
Anja Dević (2024)U ovom završnom radu prikazani su literaturni podaci koji se odnose na geotehničke karakteristike terena izgrađenih od lesa na primeru šireg istražnog prostora, tzv. Zemunskog lesnog platoa, kao i rezultati detaljnih geotehničkih istraživanja na lokaciji objekta Poreske uprave Zemun. U prvom delu rada prikazani su uslovi nastanka karakteristične makroporozne strukture lesa i njen uticaj na fizičko-mehaničke karakteristike i stabilnost terena izgrađenih od lesa. Na osnovu analize i interpretacije rezultata detaljnih geotehničkih istraživanja na lokaciji objekta Poreske uprave Zemun prikazane su ...... [y ke] 5 „ = E ” = H = = = 6 | 5 E [:*] E o E „ o [:s] o '= o .N [ 6 e i N [} N m N = [ 5 o | - [} -i | = [u] S S = |-- 'O [- = S : . 5 ŠJ = [ [:] :5 [0 > o Č o -i i o o ' « 5 „ -i M ...
... OOA 7 IB1(95,67) , S 24 100m 98 78 76 74 72 70 68 66 64 62 60 58 56 54 52 LEGENDA Litološke oznake [u] [u] ke:j el Č i [7 [55 = j - E _ = [~ = = < 6 i i E i E Ri E |s o N 9 j [ N [S] [s [ -| N o N 5 ...
... |- -- -d o = -ŽA = [c [ [ :5 o > .S o q Č o i r o e 9 ~“ 5 ») o o [3 [ = [ S [ aj [j = B F E 3 i 8 ii i ii 3 Hi i f c oO _ | i |_ i |_ | |_ d < -} |j | S = = % -i N - N = N [-- O — o ...Anja Dević. Specifičnosti fundiranja u lesnim naslagama – objekat Poreska uprava Zemun, 2024
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Karst aquifer as a buffer for climate variations and changes
Stevanović Zoran, Ristić-Vakanjac Vesna, Milanović Saša. "Karst aquifer as a buffer for climate variations and changes" in Proceedings / IWA Specialist Groundwater Conference, 08-10 September 2011, Belgrade, Serbia, Belgrade: Institute for the Development of Water Resources Jaroslav Èerni (2011): 369-375
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O potrebi formiranja nove nacionalne mreže za monitoring podzemnih voda u srbiji
Стевановић Зоран, Ристић-Вакањац Весна, Милановић Саша. "O potrebi formiranja nove nacionalne mreže za monitoring podzemnih voda u srbiji" in Оптимално истраживање и одрживо коришћење геолошких ресурса : зборник радова XVI конгреса геолога Србије, Donji Milanovac, 22-25.05.2014. = Optimal Reserach and Sustainable Usage of the Geological Resources : proceedings of the XVI Serbian Geologcal, Београд:Српско геолошко друштво (2014): 313-319
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Climate changes and water supply. SE Europe Cooperation Programme
Stevanović Zoran, Ristić-Vakanjac Vesna, Milanović Saša. Climate changes and water supply. SE Europe Cooperation Programme, Beograd:Rudarsko-geolološki fakultet, Departman za hidrogeologiju, 2012
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Regional settings and correlation of exploration results for the Narst uranium deposit Dornogobi ptovince, south east Mongolia
Stevanović Zoran, Ristić-Vakanjac Vesna, Milanović Saša. "Regional settings and correlation of exploration results for the Narst uranium deposit Dornogobi ptovince, south east Mongolia" in Climate Changes and Impacts on Water Supply, Beograd, Srbija:Rudarsko-geološki fakultet (2012): 61-74
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WP4-Availability of Water Resources
Stevanović Zoran, Ristić-Vakanjac Vesna, Milanović Saša. "WP4-Availability of Water Resources" in Climate Changes and Impacts on Water Supply, Beograd, Srbija:Rudarsko-geološki fakultet (2012): 133-176
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Supportive methods for assessing effective porosity and regulating karst aquifers
Stevanović Zoran, Milanović Saša, Ristić-Vakanjac Vesna. "Supportive methods for assessing effective porosity and regulating karst aquifers" in Acta Carsologica 39 no. 2, Postojna:Slovenian Academy of Sciences and Arts (2010): 313-329. https://doi.org/10.3986/ac.v39i2.102
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Hypogene karst associated with igneous intrusions and its influence on the subsequent karst evolution in high mountains (Central Andes, Peru)
Carbonate rocks of Cretaceous age are wide spread in the Peruvian Andes. The studied area in the eastern part of the Cordillera Occidental, near a large igneous intrusion and a skarn deposit, exemplifies polygenetic and multi-phase karst development. Hypogene karstification is related to a hydrothermal activity associated with a magmatic event at ca. 11-9.7 Ma responsible for the emplacement of the nearby intrusion and related alteration of the carbonate rocks. It has resulted in deep-rooted, laterally isolated stair-case-rising shaft ...Alexander B. Klimchouk, Saša Milanović, Cristian Bittencourt. "Hypogene karst associated with igneous intrusions and its influence on the subsequent karst evolution in high mountains (Central Andes, Peru)" in Conference: 21st International Congress of Speleology, France, June 2021, France : ICS (2021)
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Reciklaža i ponovna upotreba flotacijske jalovine rudnika „Rudnik“ u cilju osvajanja tehnoloških postupaka prerade sekundarnih sirovina u Srbiji – projekat iz programa Prizma (2024-2026) - REASONING
Dragan S. Radulović, Jovica Stojanović, Grozdanaka Bogdanović, Vladimir Simić, Milena Kostović, Vladimir Jovanović, Dejan Todorović, Branislav Ivošević (2023)Velike količine flotacijske jalovine stvaraju se u Srbiji (preko 20 Mt), kao i u svetu (20.000-25.000 Mt). Zbog zaostalih teških metala (Pb, Cu, Fe i Zn...) ona predstavlja potencijalno opasni otpad koji bi trebalo zbog vrednosti plemenitih i obojenih metala u njoj reciklirati. Na Rudniku „Rudnik“ svake godine se generiše oko 250.000 t, flotacijske jalovine, od 1953. god. oko 11 Mt. Naučno istraživačkim radom i obavljenim ispitivanjima u okviru Projekta-REASONING (2024.-2026.) dobiće se rezultati i osvojiće se nova inovativna rešenja ...Dragan S. Radulović, Jovica Stojanović, Grozdanaka Bogdanović, Vladimir Simić, Milena Kostović, Vladimir Jovanović, Dejan Todorović, Branislav Ivošević. "Reciklaža i ponovna upotreba flotacijske jalovine rudnika „Rudnik“ u cilju osvajanja tehnoloških postupaka prerade sekundarnih sirovina u Srbiji – projekat iz programa Prizma (2024-2026) - REASONING" in X Kolokvijum o pripremi mineralnih sirovina, Univerzitet u beogradu, Rudarsko-geološki fakultet,08.12.2023, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet (2023)
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Comprehensive Profiling of Microbiologically Induced CaCO3 Precipitation by Ureolytic Bacillus Isolates from Alkaline Soils
Olja Šovljanski, Lato Pezo, Jovana Stanojev, Branimir Bajac, Sabina Kovač, Elvira Tóth, Ivan Ristić, Ana Tomić, Aleksandra Ranitović, Dragoljub Cvetković, Siniša Markov (2021)MICP process, kinetic study, calcite, vaterite, MALDI-TOF identification, Bacillus licheniformis, Sporosarcina pasteurii... and ureolytic activity of S. pasteurii, respectively [44]. As shown in Figure 3, only S. pasteurii DSM 33 and B. simplex have reached 8 log CFU/mL at a pH value of 7.3, while other isolates did not cross 6 log CFU/mL after 7 days. After incubation at a pH value of 9.3, only S. pasteurii DSM 33 reached ...
... Figure 6. FTIR analysis (a—1st day; b—14th day; 1—S. pasteurii DSM 33; 2—B. muralis; 3—B. lentus; 4—B. simplex; 5—B. firmus; 6—B. licheniformis). Microorganisms 2021, 9, 1691 14 of 20 Figure 7. XRD spectra of CaCO3 precipitates (a—1st day; b—14th day; 1—S. pasteurii DSM 33; 2— B. muralis; 3—B. lentus; ...
... DTA/TGA of CaCO3 precipitates (a—1st day; b—14th day; 1—S. pasteurii DSM 33; 2— B. muralis; 3—B. lentus; 4—B. simplex; 5—B. firmus; 6—B. licheniformis; black arrow—1st day; red arrow—14th day). The particle size distribution was narrow for referent strain S. pasteurii DSM 33 pre- cipitates, with sizes ranging ...Olja Šovljanski, Lato Pezo, Jovana Stanojev, Branimir Bajac, Sabina Kovač, Elvira Tóth, Ivan Ristić, Ana Tomić, Aleksandra Ranitović, Dragoljub Cvetković, Siniša Markov. "Comprehensive Profiling of Microbiologically Induced CaCO3 Precipitation by Ureolytic Bacillus Isolates from Alkaline Soils" in Microorganisms, MDPI AG (2021). https://doi.org/10.3390/microorganisms9081691
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Geotehnički uslovi izgradnje nadvožnjaka "Balajnac" na autoputu E-80 deonica: Niš - Merošina
Dragoslav Rakić, Nikola Božović (2024)U sklopu prve deonice autoputa E-80 Niš – Merošina, izgrađen je nadvožnjak u zoni sela Balajnac koji je oslonjen na tri stubna mesta na međusobnom rastojanju od oko 26 m. Svaki stub je fundiran na šipovima i to sa predloženim rasporedom od 2 šipa u grupi na međusobnom rastojanju od 3.6 m. U radu su na osnovu izvršenih geotehničkih istraživanja terena, analizirani rezultati nosivosti vertikalno opterećenog šipa prečnika 1.2 m i dužine šipa od L = 23 m. Analiza ...Dragoslav Rakić, Nikola Božović. "Geotehnički uslovi izgradnje nadvožnjaka "Balajnac" na autoputu E-80 deonica: Niš - Merošina" in Peti Srpski kongres o putevima, Beograd, 30-31.05.2024., Beograd : Srpsko društvo za puteve "Via Vita" (2024)
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Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling
Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeBranislav Petrović, Veljko Marinović, Zoran Stevanović. "Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling" in Environmental Earth Sciences, Springer Science and Business Media LLC (2023). https://doi.org/10.1007/s12665-023-10911-5
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Fluid inclusion systematics in the Okoška gora polymetallic deposit
... Mioč, P. 1972: Basic Geological Map of Yugoslavia 1:100.000.5 to the Sheet Slovenj Gradec. Federal Geological Survey B Sigesmund,S., Oriolo, S., Heinrichs, T.. Basei, M. A. S., Nolte, N 2018: Provenance of Austroalpine basement metasedimenits: connections between peri-Gondwanan domainsofcentral Eur ...
... Gradec. Interpreli to the Sheet Slovenj Gradec. Federal Geological Survey Belgrade, 74 pp. Schmid, S. M., Fiigenschuh, B., Kounov, A., Matenco,L., Nievergelt, P.. Oberhinsli, R., Picuge Schefer, S., Schuster, R., Tomljenovič, B., Ustaszewski, K.. & van Hinsbergen, U. 3. J, 2 Tectonic units of the ...
... Šoster, Miloš Velojić, Barbara Potočnik Krajnc, Matej Dolenec | 25th meeting of Slovenian geologists, Ljubljana, 2021 | 2021 | | http://dr.rgf.bg.ac.rs/s/repo/item/0005533 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених ...Aleš Šoster, Miloš Velojić, Barbara Potočnik Krajnc, Matej Dolenec. "Fluid inclusion systematics in the Okoška gora polymetallic deposit" in 25th meeting of Slovenian geologists, Ljubljana, 2021, Univerza v Ljubljani, Oddelek za geologijo (2021)
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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 ...... concentration and temperature for the substitution reactions of [(TL'*")PdCl]* complex with I- in 0.1 M NaClO, and 10 mM NaCl. = 107k, 4/8 120 10°k,,,/s? 21. s ai s Kops! 308K " : 100 4 308K 80 4 298K 2 60 4 288K 40 4 A 20 4 0 10*[Pyridine]/M 10°[DMSO]/M| T T T T T 0 + r r r r 4 0 2 4 6 8 10 12 0 2 4 6 8 10 ...
... the line presents the s value, which represents degree of affinity of the complex towards the nucleophiles. The s val- ues for [(TLtBu)PdCl]+ complex is 0.47 and for [Pd(tpdm)Cl]+ complex is 0.51. These values are lower than the value of the standard sub- strate trans-[Pt(py)2Cl2] (s = 1.00) [34]. This ...
... reactions of [(TLtBu)PdCl]+ and [Pd(tpdm)Cl]+ complexes with different nucleophiles in 0.1 M NaClO4 and 10 mM NaCl. [Pd(tpdm)Cl]+ k2 (M�1 s�1) k1[Cl �] (M�1 s�1) DH2 – (kJ mol�1) DS2 – (J K�1 mol�1) Thioureaa 298 (5.8 ± 0.2) � 103 0.37 ± 0.08 29 ± 3 �75 ± 8 I� 288 526 ± 3 12 ± 1 298 646 ± 5 47 ± ...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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Flyrock induced by blasting in surface mining
Milanka Negovanović, Lazar Kričak, Snežana Ignjatović, Stefan Milanović, Jovan Marković, Nikola Simić, Rade Šarac (2022)Miniranje predstavlja i dalje najefikasniji i najjeftiniji način eksploatacije velikih količina čvrstih mineralnih sirovina na površinskim kopovima. Energija eksplozije se koristi za fragmentaciju čvrste stenske mase do zahtevane granulacije. Pored pozitivnih efekata miniranja, postoje i određeni neželjeni efekti svakog procesa miniranja koji se mogu javiti, a to su: potresi tla, razletanje komada stene, vazdušni udari, otrovni i zagušljivi gasovi i prašina. Razletanje komada stene je nekontrolisano izbacivanje fragmenata odminirane stenske mase i predstavlja jedan od glavnih izvora materijalne štete ...Milanka Negovanović, Lazar Kričak, Snežana Ignjatović, Stefan Milanović, Jovan Marković, Nikola Simić, Rade Šarac. "Flyrock induced by blasting in surface mining" in Rudarski glasnik, Beograd : Rudarski institut (2022). https://doi.org/10.25075/BM.2022.05
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Correlation of uniaxial compressive strength with the dynamic elastic modulus, p –wave velocity and s –wave velocity of different rock types
Knowing mechanical properties of rocks incorporated with ultrasonic waves velocities investigations provide a secure basis for mine modelling. Uniaxial compressive strength, dynamic elastic modulus and ultrasonic waves velocities are just some of the rock properties that indicate on presence of discontinuities, stratification and fissures of rocks. Determining the relationship of these rock properties testing the rock samples that are corresponding to different rock types extracted from different mineral deposits represents the core of this study. In this paper, we ...Jelena Majstorović, Miloš Gligorić, Suzana Lutovac, Milanka Negovanović, Luka Crnogorac. "Correlation of uniaxial compressive strength with the dynamic elastic modulus, p –wave velocity and s –wave velocity of different rock types" in Underground mining engineering, Рударско - геолошки факултет - Београд (2019)
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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 ...... Czamanske, G. K., Ishihara, S., & Atkin, S. A., (1981): Chemistry of rock-forming minerals of the Cretaceous-Paleocene batholith in southwestern Japan and implications for magma genesis. Journal of Geophysical Research: Solid Earth, 86(B11), 10431–10469. Dare, S. A. S., Barnes, S.-J., Beaudoin, G., Méric ...
... 89 – 99. Force, E. R., (1980): The Provenance of Rutile. SEPM Journal of Sedimentary Research, Vol. 50, 485-488. Frandsen, C., Stipp, S. L. S., McEnroe, S. A., Madsen, M. B., & Knudsen, J. M., (2004): Magnetic domain structures and stray fields of individual elongated magnetite grains revealed ...
... an (ed. Janković, S.), IGCP-UNESCO Correlation Project No. 3. Faculty of Mining Geology, Belgrade, Yugoslavia, 105-171. Janković, S., (1997): The Carpatho-Balkanides and adjacent area: a sector of the Tethyan Eurasian metallogenic belt. Min. Deposita, 32, 426-433. Janković, S., Jelenković, R., ...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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Arsenic in Tap Water of Serbia´s South Pannonian Basin and Arsenic Risk Assessment
Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)... 4/AS, 1988. 30. NRC, Arsenic in Drinking Water, National Academy Press, Washington, DC, 1999. 31. DE CHAUDHURI S., KUNDU M., BANERJEE M., DAS J.K., MAJUMDAR P., BASU S., ROYCHOUDHURY S., SINGH K.K., GIRI A.K. Arsenic-induced health effects and genetic damage in keratotic individuals: Involvement of ...
... of Serbia´s South Pannonian Basin and Arsenic Risk Assessment Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Arsenic in Tap Water of Serbia´s South Pannonian ...
... Of the total amount of abstracted groundwater in the South Pannonian Basin, 5810 L/s (or more than 85%) is used to provide public water supply to towns and municipal centers. Based on estimates, only about 1000 L/s, or 15% of the total, is used for drinking water supply in rural settle- ments. More ...Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić. "Arsenic in Tap Water of Serbia´s South Pannonian Basin and Arsenic Risk Assessment" in Polish Journal of Environmental Studies (2012)
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Contribution to the geotechnical classification of municipal waste landfills in Serbia
Management, Monitoring, Policy and Law, Nature and Landscape Conservation, Geochemistry and Petrology, Waste Management and Disposal,Geotechnical Engineering and Engineering Geology,Water Science and Technology,Environmental Chemistry,Environmental EngineeringDragoslav Rakić, Irena Basarić, Laslo Čaki, Slobodan Ćorić. "Contribution to the geotechnical classification of municipal waste landfills in Serbia" in Environmental Geotechnics, Thomas Telford Ltd. (2018). https://doi.org/10.1680/jenge.18.00028