Претрага
2212 items
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Clockwise vertical-axis rotation in the West Vardar zone of Serbia: Tectonic implications
The Vardar-Tethyan mega-suture between the Eurasian and Adria (Gondwana) margins comprises remnants of oceanic lithosphere of Neotethys and distal parts of the adjacent continental margins including unconformable Late Cretaceous sedimentary cover and Cenozoic igneous rocks of post-obduction age. This study provides kinematic constraints for displacements and rotations affecting the Serbian part of the West Vardar and Jadar-Kopaonik units after the closure of the Neotethyan (= Sava) Ocean. The targets of the paleomagnetic research were Late Cretaceous sediments representing an ...... lamprophiric and granitoid magma. In S. Karamata & S. Janković (Ed.), Geology and Metallogeny of the Dinarides and the Vardar zone, (pp. 255–267). The Academy of Sciences and Arts of the Republic of Srpska, Collections and Monographs, Book 1, Department of Nature, Mathematical and Technical Science ...
... for measurements and evaluations were Aniso (Bodrás 1990) and ANISOFT 4.2 and 5.1 (Chadima and Jelı́nek 2008; Chadima et al. 2018) based on Jelı́nek (1978, 1981). Test samples from each group were demagnetized in increments with alternating field (AF) (AFD300, Magnon, Dassel and LDA-3A, AGICO) or ...
... between Adria and Europe (Cvetković et al. 2016a). The older substratum on which the Cretaceous and younger sediments were deposited, or became intruded by magmatic rocks, is assigned to different tectonic units, comprising ophiolites and continental assemblies (see Figs. 1, 2, 3) and was probably ...Vesna Lesić, Emo Márton, Violeta Gajić, Dragana Jovanović, Vesna Cvetkov. "Clockwise vertical-axis rotation in the West Vardar zone of Serbia: Tectonic implications" in Swiss Journal of Geosciences, Basel : Springer International Publishing (2018). https://doi.org/10.1007/s00015-018-0321-8
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Geotehnički aspekti izgradnje visećeg pešačkog mosta u Starom gradu u Užicu
U radu su prikazani rezultati geotehničkih istraživanja za potrebe izgradnje visećeg pešačkog mosta preko klisure reke Đetinje u Užicu. Predviđeno je da most, sistema prednapregnute trake, omogući prelaz pešacima sa desne dolinske strane na stranu Starog grada, koja je opasana strmom liticom (cca. 40 m visine). Za potrebe formiranja geotehničkog modela i strukturnog sklopa krečnjačke stenske mase korišćen je postupak fotogrametrijskog snimanja dronom. Predviđeno je da se zatežuća sila (od oko 30 MN), koju most prenosi na obalni stub, ...fotogrametrija, stabilnost kosina, pukotine, prednapregnuta sidra, test granične nosivosti, paker (Ližonov) test... fakultet, Beograd 2 Hoek, E., Diederichs, M.S. (2006) Empirical estimation of rock mass modulus. International Journal of Rock Mechanics and Mining Sciences, 43, 203-215 ttps://doi:10.1016/j.ijrmms.2005.06.005 3 Hoek, E., Carter, T.G., Diederichs, M.S. (2013) Quantification of the Geological Strength ...
... the Old town is located. Geotechnical model of the limestone rock mass and joint network model are formed by utilization of drone photogrammetry. The tensile force (approx. 30 MN) induced on the bridge pillar should be accepted and transfered to the rock mass by the system of prestressed anchors. Two ...
... слободном приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf ...Zoran Berisavljević, Miloš Marjanović, Uroš Đurić. "Geotehnički aspekti izgradnje visećeg pešačkog mosta u Starom gradu u Užicu" in Zbornik radova / Međunarodno naučno-stručno savetovanje Geotehnički aspekti građevinarstva i zemljotresno inženjerstvo, Vrnjačka banja, 1-3. novembar 2023., Beograd : Savez građevinskih inženjera Srbije (2023.)
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BEYOND 2020 - Geology explorations and open pit activities affectation in reclamation designing in Kolubara Coal Mines (KCM) Serbia, new considerations
Geology explorations in KCM runs from 1936. year up to these days and still ongoing. Results in >7,200 drill holes with ≈600,000 m of core drilling and gave lignite ore resources of > 4,1Bt, which 1,15Bt are excavated since 1986. of XIX up to early years of XXI century. For further mining operations in open pits stay 1,5Bt of lignite. Under waste heaps are ≈80 km2, additional 85 km2 should be filled. All of that masses/areas were, are ...Bojan Dimitrijević, Bogoljub Vučković, Radmila Gaćina. "BEYOND 2020 - Geology explorations and open pit activities affectation in reclamation designing in Kolubara Coal Mines (KCM) Serbia, new considerations" in 17th International Conference of the open and underwater mining of minerals, Sts. Constantine and Helena Resort, Varna, 18-22 September, Bulgaria, Sofia, Bulgaria : Scientific and Technical Union of Mining, Geology and Metallurgy, (2023)
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Примена нумеричких метода у моделовању тецишта са освртом на различите реолошке услове
Јелка Крушић (2023)Тецишта су комплексне појаве нестабилности које захтјевају истраживања и испитивањакоја до сада нису рађена код нас у области геотехнике. По механизму, начину активирањаи понашању покренутог материјала се знатно разликују од клизишта. Циљ оведисертације је била примјена нумеричких модела пропагације тецишта на примјеру двијепојаве које су се десиле у Србији као посљедица дјеловања циклона Тамара. Детаљноистраживање тецишта подразумијева теренско картирање, теренска истраживања илабораторијска испитивања одабраних узорака са терена. Од теренских истраживања напримјеру тецишта Селанац урађена су геофизичка истраживања Електричнетомографије док ...тециште, нумерички модели пропагације, циклон Тамара, геофизичка истраживања, лабораторијска испитивања, Селанац, Лева река, RAMMS, SPH geoflow, реолошки моделЈелка Крушић. Примена нумеричких метода у моделовању тецишта са освртом на различите реолошке услове, Београд : Универзитет у Београду, Рударско - геолошки факултет, 2023
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Tektono-termalna evolucija kontakta Dinarida i Karpato-Balkanida u području Jastrepca
Dalibor Erak (2019)Predmet istraživanja doktorske disertacije je tektonska evolucija područja planine Jastrebac u centralnoj Srbiji, gde višefazna tektonska aktivnost od mezozoika do danas komplikuje rekonstrukciju strukturnih odnosa i geološke evolucije ovog prostora. Kompleksna višefazna evolucija planine Jastrebac u Srbiji je demonstrirana kombinovanjem kinematskih podataka prikupljenih na terenu i mikrostrukturnih opservacija sa dodatnim termohronološkim podacima “fission track” i podacima odredbe starosti metodom U-Pb na cirkonima. Gornjokredna ekshumacija bila je praćena gornjokredno-eocenskim navlačenjem i magmatizmom vezanim za kontinentalnu koliziju, pri čemu je akreciona ...... Dimitrijevic, M.D., 1987. The Paraflysch of the Central Vardar Subzone. The turbiditic basins of Serbia. Serbian Academy of Sciences and Arts Department of Natural & Mathematical Sciences, 380 pp. D. Erak: Tektono-termalna evolucija kontakta Dinarida i Karpato-balkanida u području Jastrepca 143 D ...
... rotation. These differences favour late stage truncations and migration of extension in a hanging-wall direction. Keywords: kinematics, thermochronology, extensional detachments, Dinarides, Carpatho-Balkanides Scientific field: Geo-sciences Scientific subfield: Dynamic geology UDK: 551.24.05(497 ...
... Serbia). International Journal of Earth Sciences 105, 1485, doi:10.1007/s00531-015-1266-z. Balazh, A., 2018. Highly detailed planet Earth: Exaggerated precise relief is illuminated by the rising sun from the east, Part of Europe - Italy, Greece and Mediterranean Sea, Elements of this image ...Dalibor Erak. Tektono-termalna evolucija kontakta Dinarida i Karpato-Balkanida u području Jastrepca, Beograd : Rudarsko-geološki fakultet, 2019
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Efikasnost različitih tipova glina Srbije za adsorpciju metilen plavog
Maja D. Milošević (2016-12-09)Adsorpciona efikasnost različitih uzoraka glina sa lokaliteta Srbije određenaje njihovim tretiranjem različitim koncentracijama rastvora metilen plavog (MP).Detaljna mineraloška karakterizacija ispitivanih glina i rezultati njihove interakcijesa rastvorima MP dobijeni su primenom optičkih, rendgenskih, hemijskih, DTA ispektroskopskih metoda.Na osnovu formiranja MP agregata u izmenljivim pozicijama i površiničestica gline, razlikuju se dva tipa glinovitih minerala: visoko naelektrisani(smektiti) i nisko naelektrisani (kaoliniti). Dimeri se stvaraju na naelektrisanimpovršinama, a granica njihovog razvoja omogućuje determinaciju mineralne vrste.Molekuli MP stoje pod uglom od 21.5o kada se ...minerali glina, metilen plavo, kristali metilen plavog, difuznarefleksija, adsorpcija, flokulacija, naelektrisanje slojeva... Chemistry 94: 3681 - 3689 Capkova P., Pospisil M. and Lerf A. 2002. Molecular simulations in structure analysis of tantalum sulfide intercalated with methylene blue. Solid State Sciences 4: 671 - 676 Cariati F., Erre L., Gessa C., Micera G. and Piu P. 1983. Polarization of water molecules in ...
... montmorillonites. Clays and Clay Minerals 31: 9 - 16 Sridharan A. and Prakash K. 2001. Settling Behavior and Clay Minerology. Soils and Foundations 41: 105 - 109 Srodon J. and Eberl D.D. 1984. Illite. Review in Mineralogy and Geochemistry 13: 495 - 544. Stephan E. A. and Chase G. G. 2001. A ...
... Pfeil P.C and Stevens R.E. 1967. Solubility and properties of two crystalline phases of methylene blue. Journal of chemical and engineering data 12: 4 Borkovec M., Wu Q., Degovics G., Laggner P. and Sticher H. 1993. Surface area and size distributions of soil particles. Colloids and Surfaces ...Maja D. Milošević. "Efikasnost različitih tipova glina Srbije za adsorpciju metilen plavog" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-12-09)
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The use of biological markers in determination of origin and type of organic matter in the Tisza river sediments
Snežana Štrbac, Gordana Gajica, Aleksandra Šajnović, Nebojša Vasić, Ksenija Stojanović, Branimir Jovančićević (2013)The objective of the study was to determine the origin and type of organic matter (OM) of the Tisza recent sediments along the distance of 153 km through the territory of Serbia. For this purpose group organic-geochemical parameters and biomarker compositions were used. All samples contain approximately same amount of OM, which was deposited under uniform, slightly reducing conditions. Based on the distribution of n-alkanes, the origin and type of OM could not be precisely estimated. However, n-alkane patterns ...... data12 and based on the total mass spectra (library: NIST5a). The biomarker parameters were calculated from the GC–MS chromato- gram peak areas (software GCMS Data Analysis). RESULTS AND DISCUSSION Group organic–geochemical parameters The amount of the total organic carbon (Corg) and soluble ...
... 4. V. Beškoski, G. Gojgić-Cvijović, B. Jovančićević, M. Vrvić, Gas Chromatograph in Environmental Sciences and Evaluation of Bioremediation, in Gas Chromatography – Biochemicals, Narcotics and Essential Oils, B. Salih, Ö. Çelikbıçak, Eds., InTech, Rijeka, Croatia, 2012, Ch. 1, p. 3 5. R. A ...
... of CH2Cl2 and CH3OH and quantified. The bitumen extracts and crude oils were separated into saturated, aromatic and NSO fractions using column chromatography over silica gel. The saturated hydrocarbon fraction was eluted with n-hexane, aromatic hydrocarbons with mixture of n-hexane and dichloro- ...Snežana Štrbac, Gordana Gajica, Aleksandra Šajnović, Nebojša Vasić, Ksenija Stojanović, Branimir Jovančićević. "The use of biological markers in determination of origin and type of organic matter in the Tisza river sediments" in Journal of Serbian Chemical Society, Beograd : Srpsko hemijsko društvo (2013). https://doi.org/10.2298/JSC130614087S
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Fuzzy Model for Risk Assessment of Machinery Failures
The main goal of this research was the development of an algorithm for the implementation of negative risk parameters in a synthesis model for a risk level assessment for a specific machine used in the mining industry. Fuzzy sets and fuzzy logic theory, in combination with statistical methods, were applied to analyze the time picture state of the observed machine. Fuzzy logic is presented through fuzzy proposition and a fuzzy composition module. Using these tools, the symmetric position of the ...... happen) and uncertainty caused by ambiguity or a lack of information. It also includes both negative and positive impacts on objectives. Many definitions of risk exist in common usage; however, the definition above was developed by an international committee representing over 30 countries and is based ...
... (RPN) that provides more Symmetry 2020, 12, 525 25 of 26 information on the parameters that have an impact on risk. For instance, it allows for the introduction of indicators that have not been used in risk assessments on machinery and presents a comprehensive model for complex technical systems ...
... employees, and environment, even with proper monitoring and maintenance systems. Previous research in the field of risk and reliability has offered different approaches and various models, but there have been some common goals: the identification of critical elements in the system, subsystems, and assemblies; ...Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković. "Fuzzy Model for Risk Assessment of Machinery Failures" in Symmetry, MDPI AG (2020). https://doi.org/10.3390/sym12040525
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Analysis Of the Process Of Carbon Capture Utilization And Storage In Underground Reservoirs
John Nyame (2024)The importance of mitigating the effects of global climate change has necessitated an in-depth exploration of innovative strategies to reduce carbon dioxide (CO2) emissions. Among these strategies, Carbon Capture, Utilization, and Storage (CCUS) has emerged as a promising and transformative solution. This master thesis delves into the diverse realm of CCUS processes, aiming to unravel the positives challenges, and opportunities within this dynamic field. The analysis begins with a systematic examination of carbon capture technologies, encompassing post-combustion, pre-combustion, and oxy-fuel combustion ...... atmosphere to have a sustainable environment and to mitigate global climate crises. Research in this work will provide a comprehensive and detailed information regarding the analysis of carbon capture with its emerging and new technologies with the intricacies and challenges associated, utilization of ...
... report no. DOE/ETA-0383. Washington, DC: Energy Information Administration; 2009, http://www.ela.doe.gov/olaf/aeo [4] Ziobrowski Z. et al. (2022): Comparison of CO» efficiency from Flue Gases Based on Commonly Used Methods and Materials. 15(2), 460; https://doi.org/10.3390/ma15020460 [5] Cooper ...
... captured for enhanced oil recovery and carbon-based products manufacturing and finally carbon underground storage and transport based on the economic, environmental and policy factors. Figures 1.2 and 1.3 show a background of the carbon capture and storage process (CCS) and an example of a full-scale ...John Nyame. Analysis Of the Process Of Carbon Capture Utilization And Storage In Underground Reservoirs, 2024
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Some models for determination of parameters of the soil oscillation law during blasting operations
... Petrović, Ž. Business Statistics, Megatrend; University of Applied Sciences: Belgrade, Serbia; Faculty for Management: Zaječar, Serbia, 2004; p. 182. Energies 2016, 9, 617 15 of 15 10. Vukadinović, S. Elementsof Probability and Mathematical Statistics; Technique for Copying Bureau of Construction: ...
... explosive amount, and conditions of blasting and geologic characteristics of the soil; all of this being determined on the basis of test blasting for the specific work environment. In the Sadovskii equation two parameters, K and n appear and they are conditioned both by rock mass characteristics and blasting ...
... blast site to the monitoring point (m); r0—radius of the explosive charge; and n—exponent, conditioned by soil properties and mining conditions and determined by field measurements as well. The radius of the explosive charge r0 and the amount of explosive Q are related by the equation: Q “ 4 3 ¨ π ¨ r3 ...Suzana Lutovac, Dragan Medenica, Branko Gluščević, Rade Tokalić, Čedomir Beljić. "Some models for determination of parameters of the soil oscillation law during blasting operations" in Energies, Basel, Switzerland : MDPI (2018). https://doi.org/10.3390/en9080617
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Еволуција напонског поља подручја Интерних Динарида у Србији током алпске орогенезе
Ana S. Mladenović (2015-06-19)Циљ ове докторске дисертације био је реконструкција еволуције напонског пољаЗемљине коре у подручју Интерних Динарида у Србији током Алпске орогенезе.Истраживања за потребе решавања овог проблема су изведена у два дела. Првидео обухватао је анализу палеонапона на дефинисаном подручју истраживања,док се други део односио на анализу тренутно активног поља напона у овом делуБалканског полуострва. Истраживано подручје обухвата унутрашњи деоДинарског орогеног појаса, који се простире у централној и западној Србији. Собзиром на циљ истраживања, истраживано подручје је дефинисано тако даобухвата три ...Интерни Динариди, анализа палеонапона, фокални механизмиземљотреса, напонско поље, тектоно-магматски догађаји... Metallogeny of the Dinarides and the Vardar zone. The Academy of Sciences and Arts of the Republic of Srpska, Collections and Monographs 1, Dpt. of Natur., Math. and Techn. Sci. 1: 245 – 253 Cvetković V., Poli G., Prelević D. 2001. Eruptive history and low-pressure evolution of the Early Miocene Borač ...
... convergence and wrenching of the Central Dinarides: Constraints from a paleostress study. Tectonophysics 410: 465 – 484 Jamšek-Rupnik P. 2013. Geomorphological evidence of active tectonics in the Ljubljana basin. PhD thesis. University of Ljubljana, Faculty of Natural Sciences and Engineering ...
... beneath the Bresovica harzburgite Massif. In: Karamata S., Janković S. (Eds.). International Symposium Geology and Metallogeny of the Dinarides and the Vardar zone, Academy of Sciences & Arts Republic of Srpska Vol. 1, Banja Luka, Sarajevo, 171 – 177 Karamata S., Sladić-Trifunović M., Cvetković ...Ana S. Mladenović. "Еволуција напонског поља подручја Интерних Динарида у Србији током алпске орогенезе" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-06-19)
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Еволуција напонског поља подручја Интерних Динарида у Србији током алпске орогенезе
Ana S. Mladenović (2015-06-19)Циљ ове докторске дисертације био је реконструкција еволуције напонског пољаЗемљине коре у подручју Интерних Динарида у Србији током Алпске орогенезе.Истраживања за потребе решавања овог проблема су изведена у два дела. Првидео обухватао је анализу палеонапона на дефинисаном подручју истраживања,док се други део односио на анализу тренутно активног поља напона у овом делуБалканског полуострва. Истраживано подручје обухвата унутрашњи деоДинарског орогеног појаса, који се простире у централној и западној Србији. Собзиром на циљ истраживања, истраживано подручје је дефинисано тако даобухвата три ...Интерни Динариди, анализа палеонапона, фокални механизмиземљотреса, напонско поље, тектоно-магматски догађаји... Metallogeny of the Dinarides and the Vardar zone. The Academy of Sciences and Arts of the Republic of Srpska, Collections and Monographs 1, Dpt. of Natur., Math. and Techn. Sci. 1: 245 – 253 Cvetković V., Poli G., Prelević D. 2001. Eruptive history and low-pressure evolution of the Early Miocene Borač ...
... convergence and wrenching of the Central Dinarides: Constraints from a paleostress study. Tectonophysics 410: 465 – 484 Jamšek-Rupnik P. 2013. Geomorphological evidence of active tectonics in the Ljubljana basin. PhD thesis. University of Ljubljana, Faculty of Natural Sciences and Engineering ...
... beneath the Bresovica harzburgite Massif. In: Karamata S., Janković S. (Eds.). International Symposium Geology and Metallogeny of the Dinarides and the Vardar zone, Academy of Sciences & Arts Republic of Srpska Vol. 1, Banja Luka, Sarajevo, 171 – 177 Karamata S., Sladić-Trifunović M., Cvetković ...Ana S. Mladenović. "Еволуција напонског поља подручја Интерних Динарида у Србији током алпске орогенезе" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-06-19)
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Модел померања терена услед утицаја рударских радова на основу радарских сателитских снимака
Зоран Гојковић (2023)Површински коп, као систем који обезбеђује енергетску стабилност или снабдевање сировинама које су од изузетне важности за привредни напредак, својим функционисањем утиче на околна насељена места. Међу бројним аспектима овог утицаја, може се издвојити издвојити и анализирати утицај вертикалних и хоризонталних померања која се јављају на површи терена. Мониторинг вертикалних и хоризонталних померања површи терена околних насељених места треба да има што бољу временску резолуцију (временски период између праћења деформација) како би се вертикална и хоризонтална померања контролисала и ...Зоран Гојковић. Модел померања терена услед утицаја рударских радова на основу радарских сателитских снимака, Београд : Универзитет у Београду, Рударко - геолошки факултет, 2023
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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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Hronološki pregled razvoja površinske eksploatacije lignita u Srbiji
U ovom preglednom radu dat je istorijski pregled razvoja površinske eksploatacije lignita na teritoriji Srbije, uz kratak osvrt na geološki nastanak i kvalitet i rezerve uglja, kao i mogućnosti korišćenja za dalju upotrebu. Kolubarski, Kostolački i Kovinski ugljeni baseni lignita u Srbiji, ne računajući Kosovsko-Metohijski i Drenički u sastavu AP Kosovo i Metohija po Rezoluciji 1244 UN, su ležišta najrasprostranjenijeg uglja - lignita u Srbiji koji se eksploatiše od druge polovine 20. veka na velikom broju površinskih kopova ...Bojan Dimitrijević, Radmila Gaćina, Bogoljub Vučković. "Hronološki pregled razvoja površinske eksploatacije lignita u Srbiji" in XI Međunarodna konferencija ugalj i kritični mineral CCM 2023, Zlatibor, 11-14. oktobar 2023., Beograd : Jugoslovenski komitet za površinsku eksploataciju (2023)
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Stratigraphy and microfossils (radiolarians and planktonic foraminifers) of the Upper Cretaceous (upper Santonian–lower Campanian) Struganik limestone (Western Serbia)
Liubov G. Bragina, Nikita Yu. Bragin, Ludmila F. Kopayevich, Nevenka Đerić, Nataša Gerzina Spajić (2019)Liubov G. Bragina, Nikita Yu. Bragin, Ludmila F. Kopayevich, Nevenka Đerić, Nataša Gerzina Spajić. "Stratigraphy and microfossils (radiolarians and planktonic foraminifers) of the Upper Cretaceous (upper Santonian–lower Campanian) Struganik limestone (Western Serbia)" in Palaeoworld, Elsevier BV (2019). https://doi.org/10.1016/j.palwor.2019.05.001
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Microstructural and magnetic properties of electrospun hematite/cuprospinel composites
Phase composition, microstructural and magnetic properties of electrospun hematite/cuprospinel composites were investigated. Samples were synthesized starting with 0 to 10 mol% of copper relative to iron. The round shape of reference electrospun fbres was preserved upon their heating up to 600 °C in air, whereas at 700 °C hollow substructure was additionally formed. In these reference samples the presence of hematite phase was detected by XRPD. A small amount (traces) of Fe3O4 /γ-Fe2O3 was also found, due to the ...Electrical and Electronic Engineering, Condensed Matter Physics, Atomic and Molecular Physics and Optics, Electronic, Optical and Magnetic MaterialsMira Ristić, Aleksandar Kremenović, Michael Reissner, Željka Petrović, Svetozar Musić. "Microstructural and magnetic properties of electrospun hematite/cuprospinel composites" in Journal of Materials Science: Materials in Electronics, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s10854-020-03526-0
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Kinetics, mechanism, and equilibrium studies of the reactions between a ruthenium(II) complex and some nitrogen- and sulfur-donor nucleophiles
Aleksandar M. Mijatović, Ratomir M. Jelić, Jovana Bogojeski, Živadin D. Bugarčić, Biljana Petrović (2013)Kinetika i mehanizam reakcija supstitucije između [Ru(trpi)(bpi)Cl]+ sa nukleofilima gvanozin-5′-monofosfatom, L-histidinom, tioureom i dimetilsulfoksidom proučavani su spektrofotometrijski u 0,1 M NaClO4 na 310 K. Red reaktivnosti za odabrane ligande je: tiourea > gvanozin-5′-monofosfat > L-histidin > DMSO. Ovaj red je povezan sa elektronskim, strukturnim i hemijskim karakteristikama kompleksa i nukleofila. Reakcija supstitucije sa tioureom je proučavana na tri različite temperature (288, 298 i 310 K). Negativna entropija aktivacije DS = potvrđuje asocijativni način aktivacije. Formiranje kompleksa [Ru(trpi)(bpi)H2O]2+ sa ligandima ...... ? and L-His or 50-GMP by potentiometric and spectrophoto- metric methods. The structures of [Ru(trpy)(bpy)Cl]? and nucleophiles are shown in Fig. 1. Results and discussion Kinetic studies Kinetics of the substitution reactions of [Ru(trpy)(bpy)Cl]? with nucleophiles Tu, L-His, DMSO, and 50-GMP ...
... by the values of the sample standard deviation S and the goodness of fit v2 (Pearson’s test). At rE = 0.1 mV (0.001 pH error) and rV = 0.005 cm3, the values of S in different sets of titrations were between 1.0 and 1.8, and v2 was between 11.0 and 13.0. The scatter of residuals (Eobs - Ecalc) versus ...
... N-bpy)2Cl2] and mer-[Ru(N,N,N- trpy)Cl3] [12, 13], aminocarboxylato complexes [Ru(N,- N,O,O-pdta)Cl2] (pdta = 1,2- propylenediaminetetraacetato) and [Ru(N,N,O,O,O-edta)Cl] (edta = ethylenediaminete- traacetato) [14, 15], dimethylsulfoxide complexes cis- and trans-[Ru(S-DMSO)4Cl2] [16–18], and arylazopyrdine ...Aleksandar M. Mijatović, Ratomir M. Jelić, Jovana Bogojeski, Živadin D. Bugarčić, Biljana Petrović. "Kinetics, mechanism, and equilibrium studies of the reactions between a ruthenium(II) complex and some nitrogen- and sulfur-donor nucleophiles" in Monatshefte für Chemie - Chemical Monthly, Springer Science and Business Media LLC (2013). https://doi.org/10.1007/s00706-013-1044-1
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Classification of mining waste landfills according to legislation in Serbia
... Knežević, and N.Lilić: Assessment of risks associated with the operation of the tailings storage facility Veliki Krivelj, Bor (Serbia), Archives of Mining Sciences, vol. 63, no. 1, 2018 [10] L. N. Bowker: Potential risk index for any tailings portfolio or facility - A tool for identifying and cla- ...
... possibility of a potential failure and the character and composition of the waste disposed on it, while the process of classification according to the consequences of the failure runs thro- ugh three iterations, through which endangered humanity, source-path-recipient chain and significance of consequences ...
... Small dams design, surveillance, and rehabilitation – Bulletin No 143, ICOLD, Paris, 2011, dostupno na: https://fdocuments.in/document/icold-small-dams- sept-2011.html, pristupljeno 2021-05-28. [14] NZSOLD: New Zealand Dam Safety Guidelines – Objectives and Principles. Institution of Professional ...Dragana Nišić, Uroš Pantelić, Nikoleta Aleksić, Neda Nišić. "Classification of mining waste landfills according to legislation in Serbia" in Tehnika, Centre for Evaluation in Education and Science (CEON/CEES) (2021). https://doi.org/10.5937/tehnika2105575N
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Determination of Mechanical Properties of Altered Dacite by Laboratory Methods
This paper presents a methodology for determining the uniaxial and triaxial compressive strength of heterogeneous material composed of dacite (D) and altered dacite (AD). A zone of gradual transition from altered dacite to dacite was observed in the rock mass. The mechanical properties of the rock material in that zone were determined by laboratory tests of composite samples that consisted of rock material discs. However, the functional dependence on the strength parameter alteration of the rock material (UCS, intact ...... confining pressures (σ3), namely, 5, 10, 15, 20, and 30 MPa. Considering that information on “in-situ” stress conditions was not available for this research, the values of confining pressures (σ3) were defined according to the recommendations given by Hoek and Brown [20], where the values for the range of ...
... stability analysis and detailed design solutions. Author Contributions: Conceptualization, V.R.; methodology, V.R. and V.Č.; validation, V.M., D.S. and N.Ž.; formal analysis, V.R. and V.Č.; investigation, V.R., V.Č., V.M., D.S. and N.Ž.; resources, V.R. and V.Č.; data curation, V.M., D.S. and N.Ž.; writ ...
... specimens and discs were then cut, polished, and shaped to the required height and diameter ratio with tolerances according to the American Society for Testing and Materials—ASTM [17] (Figure 3). Due to the previously shown procedure, monolithic rock material (100% D and 100% AD) specimens and discs of ...Veljko Rupar, Vladimir Čebašek, Vladimir Milisavljević, Dejan Stevanović, Nikola Živanović. "Determination of Mechanical Properties of Altered Dacite by Laboratory Methods" in Minerals, MDPI AG (2021). https://doi.org/10.3390/min11080813