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Упит dcterms_subject_txt:Provenance studies

377 items

  • 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
    ... determination of surface areas and cation exchange capacities (clay-organic studies XVIII). Clays and Clay Minerals. 18: 203 - 212 Higgins D.A., Byerly S.K., Abrams M.B. and Corn R.M. 1991. Second harmonic generation studies of methylene blue orientation at silica surfaces. Journal of Physical Chemistry ...
    ... M. and Meniai A-H. 2010. Removal of methylene blue from aqueous solutions using an acid activated Algerian bentonite: equilibrium and kinetic studies. International Renewable Energy Congress. Tunisia 2010: 360 -367 114 Bergaya F. and Lagaly G. 2013a. Chapter 1-General introduction: clays ...
    ... methylene blue. J. Chem. Soc., Faraday Trans. 94: 3487 - 3492 Campbell D.J., Higgins D.A. & Corn R.M. 1990. Molecular second harmonic generation studies of methylene blue chemisorbed onto a sulfur-modified polycrystalline platinum electrode. Journal of Physical Chemistry 94: 3681 - 3689 Capkova ...

  • Microstructural and magnetic properties of electrospun hematite/cuprospinel composites

    Mira Ristić, Aleksandar Kremenović, Michael Reissner, Željka Petrović, Svetozar Musić (2020)
    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 Materials

  • 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)
    Paleontology, Stratigraphy, Ecology, Evolution, Behavior and Systematics

  • Definition of Circulation Conditions and Groundwater Genesis of the Complex Krupaja Hydrogeological Karst System (Eastern Serbia)

    Ljiljana Vasić, Saša Milanović, Tina Dašić (2023)
    Management, Monitoring, Policy and Law,Renewable Energy, Sustainability and the Environment, Geography, Planning and Development, Building and Construction
    ... groundwater level, should provide unique insights into the speleogenesis of these waters; this represents the starting point for further complex studies of groundwater circulation within a karst system. Various researchers have attempted to form 3D models of karst channels, which has led to the ...
    ... Belgrade, Serbia, 2010. 8. · Langmuir,D. Physical and chemical characteristics of carbonate water. In Guide fo the Hydrology of Carbonate Rocks; IHP Studies and Reports in Hydrology; LaMoreaux, P.E., Wilson, B.M., Memon, B.A., Eds.; UNESCO: Paris, France, 1984; Volume 41, pp. 264–265. 9. Evans,C.D ...

  • The ‘Umka’ landslide

    Uroš Đurić, Dragana Đurić, Miloš Marjanović, Biljana Abolmasov, Ivana Vasiljević (2024)
    We present an in-depth landslide map of the ‘Umka’ landslide near Belgrade, Serbia, at a scale of 1:5000. The map delineates elements at risk, primarily buildings and road infrastructure impacted by the landslide displacements of several cm per year, introduced during frequent reactivation stages. The Main map results from a survey of over 350 buildings and more than 7 km of state and local roads. The acquisition techniques included engineering geological field mapping, building survey, and visual interpretation of ...
    rizik od klizišta, elementi rizika, kartiranje pomoću drona, ispitivanje objekata, geotehnički monitoring

  • Application of VIКOR method in the selection of an optimal splution of excavation “Borska Reka” ore deposit

    Sanja Bajić, Dragoljub Bajić, Branko Glušćević, Radmila Gaćina (2023)

  • Freeze-dried nanocrystal dispersion of novel deuterated pyrazoloquinolinone ligand (DK-I-56-1): Process parameters and lyoprotectant selection through the stability study

    Jelena R. Mitrović, Maja Bjelošević Žiberna, Aleksandar Vukadinović, Daniel E. Knutson, Dishary Sharmin, Aleksandar Kremenović, Pegi Ahlin Grabnar, Odon Planinšek, Dominique Lunter, James M. Cook, Miroslav M. Savić, Snežana D. Savić (2023)
    Recently, nanocrystal dispersions have been considered as a promising formulation strategy to improve the bioavailability of the deuterated pyrazoloquinolinone ligand DK-I-56-1 (7‑methoxy-2-(4‑methoxy-d3-phenyl)-2,5-dihydro-3H-pyrazolo[4,3-c]quinolin-3-one). In the current study, the freeze-drying process (formulation and process parameters) was investigated to improve the storage stability of the previously developed formulation. Different combinations of lyoprotectant (sucrose or trehalose) and bulking agent (mannitol) were varied while formulations were freeze-dried under two conditions (primary drying at -10 or -45 °C). The obtained lyophilizates were characterized in terms ...
    Pharmaceutical Science
    ... well as bioavailability and brain exposure. Among all synthesized deuterated derivatives, DK-I-56-1 was selected as the lead ligand for future studies based on its good phar- macological profile and relative ease of synthesis (Knutson et al., 2018). Due to low solubility of DK-I-56-1 in water ...
    ... crystalline structure of DK-I-56-1, and improved bioavailability after intraperitoneal adminis- tration. In vivo pharmacokinetic and pharmacodynamic studies confirmed their suitability as a promising platform for preclinical development (Mitrović et al., 2020). However, the small particle size of ...
    ... However, at a sucrose to mannitol ratio of 2 to 1 (S+M 2 + 1 10%), the cake collapsed, which was a reason to exclude this formulation from further studies. In this case, it was possible that at a lower mannitol concentration in sucrose-mannitol mixtures, the mannitol did not crys- tallize completely ...

  • Structural and geochronological constraints from the Drina-Ivanjica thrust sheet (Western Serbia): implications for the Cretaceous–Paleogene tectonics of the Internal Dinarides

    Kristof Porkoláb, Szilvia Kövér, Zsolt Benkó, Gabor Héja, Melinda Fialowski, Balázs Soós, Nataša Gerzina Spajić, Nevenka Đerić, László Fodor (2019)
    Internal Dinarides, Drina-Ivanjica thrust sheet, Deformation history, K–Ar dating, Obduction, Structural analysis
    ... obduction has been improved by contributions from analogue (Agard et al. 2014) and numerical (Duretz et al. 2016) experiments, as well as integrated studies (Jolivet et al. 2015). Less is known about the structural evolution of the continental lower plate in obduction systems. How can we trace the ...
    ... Found (OTKA) 113013 and by Ministry of Edu- cation Science and Technological Development of the Republic of Serbia, Project No. 176015. The K-Ar studies were supported by the Bolyai Research Scholarship of the Hungarian Academy of Sciences to Zsolt Benk6 (BO/442/16). Finally, we thank the two anonymous ...
    ... 205–222. Balogh, K. (1985). K/Ar dating of Neogene volcanic activity in Hungary: Experimental technique, experiences and methods of chronological studies. ATOMAK7 Koezlemenyek, 27(3), 277—288. Bazylev, B., Popević, A., Karamata, S., Kononkova, N., Simakin, S., Olujić, J., et al. (2009). Mantle p ...

  • 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 ...
    Carbon Capture, Utilization and Storage
    ... Repository is available at: www.dr.rgf.bg.ac.rs University of Belgrade Faculty of Mining and Geology Final Master Thesis Master Academic Studies ANALYSIS OF THE PROCESS OF CARBON CAPTURE UTILIZATION AND STORAGE IN UNDERGROUND RESERVOIRS Professor: Vesna Karović-Maričić Student: John N ...
    ... CO- performance to a great extent [41]|. Membrane separation for the removal of CO» from power plant flue gas streams has been the subject of many studies. The application of membrane technology for post-combustion CO- capture is very challenging mainly because of the low pressure of flue gas strcams ...
    ... chemical-looping technologies considered for the power-generation sector are at the laboratory or concept stage of development with a few pilot-scale studies currently under investigation and it is expected to reach its large-scale deployment in 2030[49]. Figure 2.5 shows a chemical looping diagram. ...

  • Development of integrated fuzzy model for mine management optimization

    Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić (2023)
    fuzzy logika, višekriterijumsko odlučivanje, ocenjivanje eksperata
    ... and the physical and mechanical properties of rocks. In such circumstances, engineer experience is especially im- portant. Several interesting studies addressing, the fuzzy logic concept in mining; are reported in | Š}, 'The integrated fuzzy model for mining: technology optimization was applied ...

  • Geotechnical conditions of “Debelo brdo” tunnel construction on the highway E-80: Nis-Merdare-Pristina (“Peace Highway”)

    Dragoslav Rakić, Irena Basarić Ikodinović, Radojica Lapčević, Dragan Lukić (2024)
    The construction of the highway E-80 has begun in Serbia, which will represent the traffic hub of the Western Balkans and will be part of the main regional transport network of Southeast Europe. Its total length through Serbia is 77 km, and one part of the route is designed through a typical plain terrain, while a larger part of the route passes through hilly terrain. The construction of the tunnel “Debelo brdo” is planned partly in an open cut ...
    „Debelo brdo“ tunnel, temporary slopes, open cut excavation, tunnel excavation, piles

  • Multiple-Criteria Decision-Making in Mine Development Planning

    Sanja Bajić (2023)
    The Borska Reka ore deposit is an experimental location where developed methodologies have been applied. It is the largest ore body within the Bor mining complex, which has been the subject of numerous studies and analyses for more than three decades. The paper focuses on the application of FAHP and the VIKOR method to address ranking of alternatives and select the optimal mining method by means of fuzzy multicriteria optimization.

  • Српски језик у дигиталном добу -- The Serbian Language in the Digital Age

    Duško Vitas, Ljubomir Popović, Cvetana Krstev, Ivan Obradović, Gordana Pavlović-Lažetić, Mladen Stanojević (2012)
    Serbian language
    ... Pet- nica science centre [45] each year. At the level of university studies, topics from the field of computational linguistics are present within com- puter science, electronics, library science, linguistics and psychology studies at the Universities of Belgrade and Novi Sad. Courses offered to students ...
    ... the level of doctoral studies. emost comprehensive education in the HLT field is offered to students at the Department of Library Science at the Faculty of Philology, whereas at other departments stu- dents take atmost one introductory course. Within Ser- bian language studies, education in the field ...
    ... students cover the ba- sic concepts of natural language processing, but they aim to educate students for other professions. As part of undergraduate studies at the Faculty of Mathemat- ics in Belgrade, courses in lexical analysis and text min- ing are offered, in addition to courses providing basic mathematical ...

  • Vodosnabdevanje i održivo upravljanje podzemnim vodnim resursima u Srbiji

    Dušan Polomčić, Zoran Stevanović, Dragoljub Bajić, Bojan Hajdin, Vesna Ristić-Vakanjac, Petar Dokmanović, Saša Milanović (2012)
    Slično većini evropskih zemalja, udeo podzemnih voda u javnom vodosnabdevanju u Srbiji je oko 75%. Najveće rezerve su akumulirane u vodonosnim naslagama intergranularne poroznosti neogene i kvartarne starosti, kao i u karstnim izdanima. One su jedini izvor vodosnabdevanja pijacom vodom za Vojvodinu i veći deo Srbije. Delovi sa malim rezervama podzemnih voda su Šumadija i južni delovi zemlje, gde se koriste u većoj meri površinske vode. Do sada izvedena hidrogeološka istraživanja pokazuju da se zahvata oko 30% obnovljivih rezervi ...
    ... insignificant groundwater reserves are Sumadija and the southern regions, where surface waters are used to a greater extent. The hydrogeological studies conducted thus far show that around 30% of renewable groundwater reserves Vodosnabdevanje i odrzivo upravljanje podzemnim vodnim resursima u Srbiji ...
    ... insignificant groundwater reserves are Sumadija and the southern regions, where surface waters are used to a greater extent. The hydrogeological studies conducted thus far show that around 30% of renewable groundwater reserves VODOPRIVREDA 0350-0519, 44 (2012) 258-260 p. 225-231 Dušan Polom i ...

  • Actual contamination of the Danube and Sava rivers at Belgrade (2013)

    Milan Antonijević, Marija Arsović, Josef Cáslavský, Vesna Cvetković, Predrag Dabić, Mladen Franko, Gordana Ilić, Milena Ivanovic, Nevena Ivanović, Milica Kosovac, Dragana Medić, Slobodan Najdanović, Milica Nikolić, Jovana Novaković, Tatjana Radovanović, Djurdjina Ranić, Bojan Šajatović, Gorica Špijunović, Ivana Stankov, Jelena Tošović, Polonca Trebse, Olivera Vasiljević, Jan Schwarzbauer (2014)
    rečni sistemi, stanje zagađenja, organski zagađivači, teški metali, skrining analize, non-target screening
    ... analytical view on an aquatic system. To the best of our knowledge this approach has been ignored as far as possible in environmental geochemical studies in the Danube Basin catchment area. EXPERIMENTAL Sampling Water samples. River water samples were taken during two different sampling cam- paigns ...
    ... from the corresponding author on request. Acknowledgement. This publication is the outcome of the TEMPUS project “Moder- nisation of Postgraduate Studies in Chemistry and Chemistry related Programmes” _________________________________________________________________________________________________ ...

  • Asbestos-Based Pottery from Corsica: The First Fiber-Reinforced Ceramic Matrix Composite

    Philippe Colomban, Aleksandar Kremenović (2020)
    Asbestos-containing pottery shards collected in the northeast of Corsica (Cap Corse) and dating from the 19th century, or earlier, have been analyzed by SEM-EDS, XRPD, FTIR and Raman microspectroscopy. Blue (crocidolite) and white (chrysotile) asbestos fiber bundles are observed in cross-sections. Most of the asbestos is partly or totally dehydroxylated, and some transformation to forsterite is observed to occur, indicative of a firing above 800 C. Examination of freshly fractured pieces shows a nonbrittle fracture with fiber pull-out, consistent with ...
    asbestos, CMC, Corsica, fiber, pottery
    ... unpublished manuscript [6]. This demonstrates the interest of the founder of ceramic processing science in special ceramics. More recently, ethnological studies on this asbestos-based pottery were published in French in specialized journals [6,7] and drew attention from the ceramic composite community [8] ...
    ... volume analyzed by Raman scattering is much more precise, we will discuss the proton species by mainly considering the Raman spectra. Ethnological studies [7] reports that 3 volumes of clays were mixed with 1 volume of asbestos during the manufacture. Both the XRPD and Raman techniques show no evidence ...

  • Valorization of non-balanced coal reserves in Serbia for underground coal gasification

    David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić (2019)
    In the name of a better and safer energy future, it is our responsibility to focus our knowledge and activities to save on imported liquid and gas fossil fuels, as well as coal on which energy security of Serbia is based. The rationalization in the use of available energy resources certainly positively affects economy and the environment of a country. This paper indicates motivations for the application of the underground coal gasification process, as well as surface gasification for ...
    ugalj, gasifikacija, zaštita životne sredine, skladištenje, solarna
    ... running dedicated pumps, and other UCG process equipment creating complete UCG energy generation furthermore environmentally friendly. Preliminary studies are showing that the planned photovoltaic system can completely power all the required onsite UCG loads. Needless to mention, solar photovoltaic ...
    ... all the consequences it carries, differs significantly from the pollution of surface waters [16]. When collecting data and the aforementioned studies of possible sources of pollution in the given area, it is necessary to consider some other tests as necessary, such as: — the amount of necessary ...

  • Surface functional groups and degree of carbonization of selected chars from different processes and feedstock

    Marija Ilić, Franz-Hubert Haegel, Aleksandar Lolić, Zoran Nedić, Tomislav Tosti, Ivana Sredović Ignjatović, Andreas Linden, Nicolai D. Jablonowski, Heinrich Hartmann (2022)
    The knowledge ofthe structural and chemical properties of biochars is decisive for their application as technical products. For this reason, methods for the characterization of biochars that are generally applicable and allow quality control are highly desired. Several methods that have shown potential in other studies were used to investigate two activated carbons and seven biochars from different processes and feedstock. The chars were chosen to cover a wide range of chemical composition and structural properties as a hardness ...
    Biougalj, različiti procesi dobijanja, različite sirovine, površinski aktivne grupe, x-ray, FT-IR,XPS
    ... of bio- chars that are generally applicable and allow quality control are highly desired. Several methods that have shown potential in other studies were used to investigate two activated carbons and seven biochars from different processes and feedstock. The chars were cho- sen to cover a wide ...
    ... were investigated. The objectives of this study were (i) evaluating the suit- ability of various analytical methods that are frequently used for studies on biochars, and (ii) characterizing the investigated chars by integrating the results of different methods. While pyrolysis and gasification are ...
    ... Francis Group, LLC, Boca Raton, FL, USA; 2017, pp. 229-244. Brewer CE, Unger R, Schmidt-Rohr K, Brown HC. Criteria to select biochars for field studies based on biochar chemical properties. Bioenergy Res. 2011; 4: 312—323. https://doi.org/10.1007/s12155-011i- 9133-7. Fidel RB, Laird AD, Thompson ...

  • Lower Berriasian ammonites from Dedina (Golubac Mountains, eastern Serbia) and their biostratigraphic implication

    Zdenek Vasícek , Dragoman Rabrenović, Petr Skupien, Barbara Radulović (2023)
    Ammonites, Taxonomy, Lower Berriasian, Getic, Northern Tethys, Serbia
    ... F0zy (2022). The JJK boundary is not evident from the collected ammonite association. The following, detailed integrated studies will be dedicated to magnetostratigraphy, studies of micropalaeontology, etc. Acknowledgements We are grateful to the Editor E. Koutsoukos (Universitat Hei- delberg) ...
    ... the species described) are signifi- cant too. Based on the current concept of the taxonomy of ammonites, the presented work mainly considers studies from the last 30 years. Among them, it is necessary to mention at least Besnosov and Mikhailova (1991), Wright et al. (1996), Kvantaliani et al ...
    ... , and lower Valanginian. The most recent data on the stratigraphic range of ammonite species come primarily from sites with multidisciplinary studies as part of the international J/K boundary project. However, even at these sites, data on their exact range are not yet clear. Order Ammonitida ...

  • An oilfield in Libya: A new model to enhance waste water disposal

    Dušan Danilović, Vesna Karović Maričić, Nori Elhaddad, Branko Leković (2016)
    нафта, лежишне воде, припрема