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2197 items
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Joint interpretation of paleomagnetic, structural and AMS results from the Vardar Zone of Serbia
Emo Marton, Marinko Toljić, Vesna Lesić, Vesna Cvetkov. "Joint interpretation of paleomagnetic, structural and AMS results from the Vardar Zone of Serbia" in 18th Meeting of the Central European Tectonic Studies Group (CETEG) & 25th Meeting of the Czech Tectonic Studies Group, 22-25th April, 2021, Terchová, Slovakia, Department of Geological Sciences, Masaryk University in cooperation with the Czech Geological Survey, IPE MU Brno and UK Praha (2021)
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The influence of Al<sup>3+</sup>ion on porcine pepsin activity<i>in vitro</i>
The in vitro effect of Al3þ ions in the concentration range 1.7·1026M–8.7·1023M on pepsin activity at pH 2, via kinetic parameters and its electrophoretic mobility was evaluated. Kinetic study demonstrated the existence of an activation effect of Al3þ at pH 2 on pepsin molecule. Kinetic analysis with respect to concentrations of haemoglobin showed that Al3þ ions increase the maximal velocity (Vmax) and kcat values rather than apparent affinity for substrate (KS) implying the non-competitive nature of activation which indicated ...... TInfluence of 4F ions on bepsin and haemoglobin conformation UV studies. The pepsin-A! and haemoglobin-AP"* interactions were followed by UV spectra. The absorption spectra of pepsin and haemoglobin in the absence and presence of 1OmM Al are presented in Figures 5 A and B. It is obvious that the ...
... standard potassium bromide (KBr) pallet (the ratio between pepsin and KBr and pepsin – AP? and KBr were 1:100); the pallets of haemoglobin samples in KBr were prepared in the same manner. Infrared spectra between 4000 and 400cm ! obtained on a Specord 75 IR, Carl Zeiss in double-beam operation ...
... concentrations of AP? ion (1, 5 and 10mM). "The samples of pepsin and haemoglobin were diluted with sample buffer in ratio 1:1 (v/v) and applied on gel in volume of 20 uL. Visualization was performed with Commassie Brilliant Blue G-250 dye. The gels scanned and processed using Corel Draw 11.0 ...Vesna M. Pavelkić, Kristina R. Gopcević, Danijela Z. Krstić, Marija A. Ilić. "The influence of Al3+ion on porcine pepsin activityin vitro" in Journal of Enzyme Inhibition and Medicinal Chemistry, Informa UK Limited (2008). https://doi.org/10.1080/14756360701841095
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Quantitative analysis of syllable properties in Croatian, Serbian, Russian, and Ukrainian
Biljana Rujević, Marija Kaplar, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Jan Mačutek (2021)Biljana Rujević, Marija Kaplar, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Jan Mačutek. "Quantitative analysis of syllable properties in Croatian, Serbian, Russian, and Ukrainian" in Language and Text: Data, models, information and applications, John Benjamins Publishing Company (2021). https://doi.org/10.1075/cilt.356.04ruj
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Environmental flows and demands for sustainable water use in protected karst areas of the Western Balkans
Karst terrains cover some 30% of the Western Balkans, where rich karst aquifers represent the main source of potable water supply and ensure the development of local economies and tourism. In this “classical karst” region, there are also numerous sites or areas under different forms of protection—from those that are included in the UNESCO World Heritage list to natural monuments and landscapes that are protected by national legislation. In and around them are specific representatives of flora and fauna ...Zoran Stevanović, Aleksandra Maran Stevanović, Želimir Pekaš, Romeo Eftimi, Veljko Marinović. "Environmental flows and demands for sustainable water use in protected karst areas of the Western Balkans" in Carbonates and Evaporites, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s13146-021-00754-1
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Environmental flows and demands for sustainable water use in protected karst areas of the Western Balkans
Karst terrains cover some 30% of the Western Balkans, where rich karst aquifers represent the main source of potable water supply and ensure the development of local economies and tourism. In this “classical karst” region, there are also numerous sites or areas under different forms of protection—from those that are included in the UNESCO World Heritage list to natural monuments and landscapes that are protected by national legislation. In and around them are specific representatives of flora and fauna ...Zoran Stevanović, Aleksandra Maran Stevanović, Želimir Pekaš, Romeo Eftimi, Veljko Marinović. "Environmental flows and demands for sustainable water use in protected karst areas of the Western Balkans" in Carbonates and Evaporites, Springer Science and Business Media LLC (2022). https://doi.org/10.1007/s13146-021-00754-1
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Production of electricity from coal-fired power plants and accompanying CO2 emissions: comparison of EU-27 and US
Even in the third decade of the 21st century, large power plants are still responsible for more than half of the electricity production in Europe and US. They predominantly use fossil fuels in their work, which results in the emission of pollutants into the air, soil and water. In addition to the production of electric energy, fossil fuels, including coal, are used for industrial purposes. Although the use of coal, especially in the countries of the European Union, is ...... regions and sectors. CO> emissions increased in North America and Asia (excluding the People's Republic of China), to a greater extent than emissions reductions in Europe and China. At the global level, CO>» emissions from electricity generation and the transport sector increased by 261 Mt and 254 ...
... air, soil, and water. Sector of production and use of coal also provides Jobs to around 230.000 people in mines and power plants across 31 regions and 11 EU countries [8]. Table 1. The US coal consumption in 2021 [6] Electric power | Industrial total | Commercial | Residential and transportation' ...
... led by increased Asian market and economic development. Global demand for electricity increased by 2.7% [4]. This paper analyzes production and emissions of CO in sector of electricity in two big worlds region - EU-27 and US. The emission of CO> in EU-27 and US in last 30 years are anatomized ...Uroš Djorgovski, Aleksandar Madžarević, Predrag Jovančić. "Production of electricity from coal-fired power plants and accompanying CO2 emissions: comparison of EU-27 and US" in International Conference on Global Energy and Climate Change - ICGRECC-23, New York, 2023, Research Galery- Science Leagues (2023)
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Insights into dike nucleation and eruption dynamics from high-resolution seismic imaging of magmatic system at the East Pacific Rise
Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Mladen R. Nedimović, Juan Pablo Canales, Hélène D. Carton, John C. Mutter, Javier Escartín (2023)Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Mladen R. Nedimović, Juan Pablo Canales, Hélène D. Carton, John C. Mutter, Javier Escartín. "Insights into dike nucleation and eruption dynamics from high-resolution seismic imaging of magmatic system at the East Pacific Rise" in Science Advances, American Association for the Advancement of Science (AAAS) (2023). https://doi.org/10.1126/sciadv.adi2698
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Cultural Heritage and Protection of Hand-Wheeled Pottery Manufacture in Western Serbia: Characteristics of Zlakusa Pottery Based on Sem-Eds and Optical Microscopy
... Miskolc, Hungary CULTURAL HERITAGE AND PROTECTION OF HAND-WHEELED POTTERY MANUFACTURE IN WESTERN SERBIA: CHARACTERISTICS OF ZLAKUSA POTTERY BASED ON SEM-EDS AND OPTICAL MICROSCOPY MILOŠEVIĆ, M.1, ZDRAVKOVIĆ, A.1, ĐORĐEVIĆ, B.2 & JELIĆ, I.3 1Faculty of Mining and Geology, University of Belgrade ...
... microscopy] and applying the obtained knowledge in the preservation of this type of cultural heritage in Serbia. Results and discussion Clay paste is a mixture of raw clays, consisted of kaolinite/halloysite, illite and smectite minerals followed with smaller amounts of quartz, feldspar ...
... the pots and their outer rims. Observed pores in sample 1 are of random orientation and size, indicating slower rotations of the potter’s wheel during the manufacturing process. Sample 2 has a specific fluid-structure that is consistent with the way it was fabricated. By the size and orientation ...Milošević Maja, Zdravković Alena, Đordjević Biljana, Jelić Ivana. "Cultural Heritage and Protection of Hand-Wheeled Pottery Manufacture in Western Serbia: Characteristics of Zlakusa Pottery Based on Sem-Eds and Optical Microscopy" in 8th Mineral Sciences in the Carpathians Conference, Acta Mineralogica-Petrographica, Miskolc, Hungary, Department of Mineralogy, Geochemistry and Petrology, University of Szeged, Szeged, Hungary (2021)
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Integrated Stratigraphy of the Middle–Upper Jurassic of the Krížna Nappe, Tatra Mountains
carbon and oxygen isotopes, radiolarians, calcareous dinoflagellates, radiolarites, Krížna Nappe, West ern Carpathians, Tethys... Western Tatra Mountains. A. L, Lb and Ld composite section. B. Lc section. Lithology, biostratigraphy (including position of the radiolarian and calcareous dinoflagellate and calpionellid samples) and results for carbon and oxygen isotope measurements, CaCOy content and microfacies analysis. Age denotes ...
... 17 (Polak and Ondrejičkov4, 1995); 18 (Plašienka and Ožvoldov4, 1996: Plašienka, 2012); 19 (Rakus and Ožvoldov4, 1999); 20, 22, 23, 25, 27, 29 (this study); 21, 24, 28 (Pol4k ef a/., 1998); 26 (Bak, 2001); 3035 (Polak and Ondrejičkova, 1993); 36 (Polak and Ožvoldov4, 2001); 37 (Sykora and Ožvol, ov4 ...
... , 1994; Birkenmajer and Widz, 1995; Plašienka and Ožvoldova, 1996; Ožvoldova and Frantov4, 1997; Ožvoldov4 ef al., 2000). However, some radiolarite interbeds within the red nodular limestones of the Kysuca succession and within thc dark, spotted siliceous limestones and marls (Podzamcze Formation ...Renata Jach, Nevenka Đerić, Špela Goričan, Daniela Reháková. "Integrated Stratigraphy of the Middle–Upper Jurassic of the Krížna Nappe, Tatra Mountains" in Annales Societatis Geologorum Poloniae (2014)
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Maturation and isotopic changes of individual hydrocarbons in lignite lithotypes through diagenesis and early catagenesis
... fractions of lignite extracts and pyrolysis prođucts are садајепе and retene. The matunty ratios based оп trimethyinaphthalenes (ТММЕ) and tetramethyinaphthalenes (TeMNr) slightly increase from Pyr400 to Pyr500. The same 15 тејајед to methylfluorene (МЕ) гано (2-+3-MF)/(1-+4-MF) and methyiphenanthrene (МР) ...
... 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.bg.ac.rs MATURATION AND ISOTOPIC СНАМСбЕ5 ОЕ INDIVIDUAL HYDROCARBONS IN LIGNITE LITHOTYPES THROUGH DIAGENESIS AND EARLY CATAGENESIS ...
... 400 "С and 500 %C. Aliphatic апд aromatic fractions isolated from lignite extracts and hquid pyrolysis prođucts were analyzed by gas chromatography-mass spectrometry. Carbon isotope determinations (65С) of indiviđual compounds in these fractions were also performed. Compositions ог апрћанс and aromatic ...Ivan Kojić, Achim Bechtel, Reinhard Sachsenhofer, Dragana Životić, Ksenija Stojanović. "Maturation and isotopic changes of individual hydrocarbons in lignite lithotypes through diagenesis and early catagenesis" in 29th International Meeting on Ogranic Geochemistry, 1-6 September 2019, Gothenburg, Sweden , European Association of Organic Geochemists (2019)
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Mineralogical and physicochemical characterization of bentonite clay from Svrljig, Serbia
Maja Milošević, Bojan Kostić (2022)... spacing value of 15.11 Å at 5.86 (2θ) and less frequent minerals such as quartz, carbonates and feldspars. This mineralogy was confirmed by XRD for oriented, saturated and heated samples. DTA curve, in addi- tion to the typical peaks related to montmorillonite (≈ 140 °C and 600 °C), also contains two smaller ...
... clay has a high content of montmoril- lonite and a smaller amount of quartz, carbonates, iron oxy/hydroxides and feldspars. Acknowledgements. Ministry of Education and Science, Republic of Serbia, on realization and financing of scientific research work in 2022, contract No. 451-03-68/2022-14/200126 ...
... Kliment Ohridski” Earth and Man National Museum Scienti�c and Technical Union of Mining, Geology and Metallurgy PLATINUM SPONSOR GOLD SPONSORS ORGANIZERS AND SPONSORS Lead partner Host Institution ...Maja Milošević, Bojan Kostić. "Mineralogical and physicochemical characterization of bentonite clay from Svrljig, Serbia" in Abstracts XXII International Congress of the Carpathian Balkan Geological Association (CBGA), September 7–11, 2022 Plovdiv, Bulgaria, Софиа : Геологически институт „Акад. Страшимир Димитров“ (2022)
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Coal homogenization stockyard sizing “Tamnava – Zapad” case study
... can be used to calculate, plan, control and predict the quality of ore being stacked and/or reclaimed with a great degree of accuracy. Robinson (2004) presents mathematical and computer models for the geometry of a stockpile, using both actual grade data and a variogram to describe the input variation ...
... chevron and window methods. Given than the windrow method is technologically more complex and requires the use of more complicated and more expensive machines, the chevron method is generally more desirable. There is no general rule defining which number of layer is considered small and which ...
... causes problems in organizing operations at the stockyard and arranging coal stacking and reclaiming. Namely, the rule is that piles are alternately filled and emptied, so that when the pile is being filled it is filled completely, and emptied completely when being emptied. In the example of coal ...Božo Kolonja, Dinko Knežević, Ranka Stanković, Dejan Stevanović, Detlef Trummer. "Coal homogenization stockyard sizing “Tamnava – Zapad” case study" in Proceedings of 13th International Symposium Continuous Surface Mining, ISCSM 2016, / (2016)
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Application of a Method for Intelligent Multi-Criteria Analysis of the Environmental Impact of Tailing Ponds in Northern Kosovo and Metohija
Gordana Milentijević, Blagoje Nedeljković, Milena Lekić, Zoran Nikić, Ivica Ristović, Jelena Đokić (2016)... cultural, social and organizational frameworks; it should be applicable to large and small companies and for large and small-scale environmental pollutants. It was thus decided that the ranking of five current tailing ponds should be done by multi-criteria analysis. Field work and analysis of flotation ...
... 43007: Climate Change Impact to the Environment-Assessment, Adaptation and Mitigation, Sub-Project 15: Climate Change Impact to the Environment and Natural Resources of the North of Kosovo and Metohija and Project OI 176018: Geological and ecotoxicological investigations in identification of geopathogenic ...
... estimated that there are around 700 million tons of flotation and separation tailings, between 1.4 and 1.7 billion tons of tailing wastes from opening pits and around 170 million tons of ashes from thermal power plants on deposit spots and landfills in Serbia. Metallurgy in the Republic of Serbia contributes ...Gordana Milentijević, Blagoje Nedeljković, Milena Lekić, Zoran Nikić, Ivica Ristović, Jelena Đokić. "Application of a Method for Intelligent Multi-Criteria Analysis of the Environmental Impact of Tailing Ponds in Northern Kosovo and Metohija" in Energies, MDPI AG (2016). https://doi.org/10.3390/en9110935
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A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)
Gordana Gajica, Aleksandra Šajnović, Ksenija Stojanović, Jan Schwarzbauer, Aleksandar Kostić, Branimir Jovančićević (2021)The molecular and isotopic composition of biomarkers in initial bitumen isolated from immature (0.41% Rr) oil shale samples (Aleksinac deposit) and liquid products obtained by pyrolysis in open (OS) and closed (CS) systems are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in liquid products is determined. The applicability of pyrolysis type, numerous biomarkers and carbon isotopic compositions (δ13C) of n-alkanes in liquid pyrolysates is established. Pyrolysis experiments were ...Uljni šejl, Aleksinac, organska supstanca, otvoreni i zatvoreni sistem pirolize, biomarkeri, izotopski sastav ugljjenikaGordana Gajica, Aleksandra Šajnović, Ksenija Stojanović, Jan Schwarzbauer, Aleksandar Kostić, Branimir Jovančićević. "A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)" in Marine and Petroleum Geology, Elsevier BV (2021). https://doi.org/10.1016/j.marpetgeo.2021.105383
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State and perspective of individual household heating in Serbia: A survey-based study
This paper presents the results of the household survey on individual household heating systems in Serbia. The survey was conducted in the period October to December 2020 with the participation of 1100 households with individual household heating systems. The information collected in the questionnaire can be separated into three main parts: basic household data, current heating system characteristics, and households’ perceptions and attitudes. The survey results provide unique and comprehensive information concerning individual household heating systems and the main ...Boban Pavlović, Dejan Ivezić, Marija Živković. "State and perspective of individual household heating in Serbia: A survey-based study" in Energy and Buildings, Elsevier BV (2021). https://doi.org/10.1016/j.enbuild.2021.111128
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The Potential of Biomarkers to Distinguish Lower and Middle Miocene Lignites from the Coal-Mining District of Lusatia
... Cupressaceae and Phyllocladaceae, whereas cuparene and dehydroicetexane are specific for Cupressaceae (Nytoft et al., 2019). Slight input of aquatic macrophytes and ferns is also evident. The degrees of aromatization of diterpenoids and non-hopanoid pentacyclic triterpenoids (Stojanović and Životić ...
... greater contribution of angiosperms. The contents of C27 and C29 n-alkanes in relation to C31 and C33 homologues imply similar impact of forested and reed-mire vegetation. The presence of tricyclic (abietane, pimarane, isopimarane) and tetracyclic (phyllocladane, bayerane, kaurane) diterpenoids ...
... DISTINGUISH LOWER AND MIDDLE MIOCENE LIGNITES FROM THE COAL-MINING DISTRICT OF LUSATIA I. Kojić1, J. Kus2, D. Životić1, K. Stojanović1 1University of Belgrade, Serbia 2Federal Institute for Geosciences and Natural Resources, Germany The organic geochemical study of Lower and Middle Miocene ...I. Kojic, J. Kus, D. Zivotic, K. Stojanovic. "The Potential of Biomarkers to Distinguish Lower and Middle Miocene Lignites from the Coal-Mining District of Lusatia" in 30th International Meeting on Organic Geochemistry (IMOG 2021), European Association of Geoscientists & Engineers (2021). https://doi.org/10.3997/2214-4609.202134092
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Advantages and Disadvantages of a Parallel and Zigzag Method of Acquisition in Walking Mode in Magnetometric Archeological Research
магнетометријска испитивања, цик-цак и паралелна аквизиција у ходајућем моду, линеарне аномалије, археологија... entation of the traverses and a combination of with and without Global Positioning System (GPS). The sampling time was set to 1 s and the dis- tance between the traverses to 1 m in order to obtain a regular data grid with the same spacing between the points along the x and y directions. DATA ACQUISITION ...
... orientation of profi les, and all the data Archaeology and Science 10 (2014) 96 Petković et al - Advantages and Disadvantages of a Parallel...(93-110) Fig. 3 Contour m ap of a vertical gradient of TM I in N -S orientation. K ey as for Fig 1. 97 Archaeology and Science 10 (2014)Petković et ...
... 99 Archaeology and Science 10 (2014)Petković et al - Advantages and Disadvantages of a Parallel...(93-110) Fig. 5 Contour m ap of a vertical gradient of TM I in E-W orientation. K ey as for Fig 1. Archaeology and Science 10 (2014) 100 Petković et al - Advantages and Disadvantages of a Parallel ...Mirko Petković, Vesna Cvetkov, Branislav Sretenović. "Advantages and Disadvantages of a Parallel and Zigzag Method of Acquisition in Walking Mode in Magnetometric Archeological Research" in Arheologija i prirodne nauke (2014)
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Synergy between the mineral deposit exploration and geothermal resources assessment on the example of "Valjevo" boron and lithium deposit in Serbia
Nebojša Atanacković, Vladimir Živanović, Ana Vranješ, Sava Magazinović, Marinko Toljić, Ana Arifović, Branislav Potić (2023)Exploration of mineral deposits involves a collection of vast data sets on geological characteristics of the area. These data can largely contribute to the assessment of the geothermal potential, which can lead to an increase in the share of geothermal resources in the energy mix of the extractive industry and the local community. On the example of the "Valjevo" B-Li deposit, data on structural settings and previous hydrogeological investigations were combined with the results of resource drilling and geophysical ...... Mionica and surrounding settlements. Karst groundwater under artesian pressure and elevated temperatures (17–37 "C) are taped with wells drilled below the Miocene cover in the surrounding. settlements of Paštrić, Sanković and Petnica. 3. MATERIALS AND METHODS Considering the available data and the ...
... probertite, ulexite, sirlezite, massive borax and Li-bearing smectite and silinaite minerals, deposited in three main zones: Borate zone, Borax zone and Lithium-borate zone. The basin basement in the north part is dominated by lower Triassic clastic and Paleozoic metamorphic sediments, while to the ...
... deposit exploration and geothermal resources assessment on the example of "Valjevo" boron and lithium deposit in Serbia | Nebojša Atanacković, Vladimir Živanović, Ana Vranješ, Sava Magazinović, Marinko Toljić, Ana Arifović, Branislav Potić | Proceedings 9th International Conference mining and environmental ...Nebojša Atanacković, Vladimir Živanović, Ana Vranješ, Sava Magazinović, Marinko Toljić, Ana Arifović, Branislav Potić. "Synergy between the mineral deposit exploration and geothermal resources assessment on the example of "Valjevo" boron and lithium deposit in Serbia" in Proceedings 9th International Conference mining and environmental protection, MEP23, Sokobanja, 24-27th May 2023, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet (2023)
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Nonequilibrium athermal random-field Ising model on hexagonal lattices
Svetislav Mijatović, Dragutin Jovković, Đorđe Spasojević. "Nonequilibrium athermal random-field Ising model on hexagonal lattices" in Physical Review E, American Physical Society (APS) (2021). https://doi.org/10.1103/PhysRevE.103.032147
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Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)
... metamorphic rocks from the Getic zone and the SMM that have experienced clockwise rotation and dextral strike-slip tectonics during the Alpine orogeny (e.g. Csontos and Voros 2004; Figenschuh and Schmid 2005). The evidence of pre-Variscan deformation and HP metamorphism proposed previously ...
... amphibolite facies overprint and locally migmatisation occurring in the Variscan (Dimitrijević 1967; Balogh et al. 1994; Zagorchev and Milovanović 2006; Nenova and Zidarov 2008; Peytch- eva et al. 2009a; Antić et al. 2015b). Additionally, U-Pb dating of titanite and several K/Ar analyses have yielded ...
... kyanite eclogites and eclogittized gabbro-norites of the Serbo- macedonian unit. Central Serbia, reaction textures and geother- mobarometry. Zbornik abstraktov. Bratislava, pp 13-14 Kostopoulos D, Reischmann T, Sklavounos S (2001) Palaeozoic and early Mesozoic magmatism and metamorphism in the ...Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Richard Spikings, Andreas Wetzel. "Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)" in International Journal of Earth Sciences, Springer Science and Business Media LLC (2016). https://doi.org/10.1007/s00531-016-1380-6