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Упит dcterms_subject_txt:facies analyses

262 items

  • 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 ...
    sediments, Tisza River, organic matter, biomarkers, oil pollutants
    ... reservoir rocks.10,11 This feature of oil can be very useful in environmental chemistry for the determination of the source of pollution. Consequently, analyses of this type obtain a forensic character. In this paper, the surface sediments of the Tisza River, in the part of river flow from Kanjiža Town ...
    ... column was heated from 80 to 310 °C, at a rate of 2 °C min-1, and the final temperature of 310 °C was maintained for an additional 25 min. Detailed analyses of the target compounds were conducted using the following ion chromatograms: m/z = 71 (n-alka- nes and isoprenoids), m/z = 191 (terpanes) and m/z ...

  • The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector

    Aleksandar R. Madžarević, Dejan D. Ivezić, Miloš L. Tanasijević, Marija A. Živković (2020)
    Natural gas is used for the production of almost 20% of total energy today. The natural gas security of the Republic of Serbia is an urgent strategic, political and security issue. Serbia is one of the most vulnerable countries in Southeast Europe, because it only has one supply route. This study is a contribution to efforts to better understand the factors affecting energy security through the implementation of a new methodology based on the fuzzy–AHP synthesis model for measuring ...
    energetska bezbednost, prirodni gas, fazi AHP, AHP višekriterijumska analiza, fazi teorija
    ... sector for various combined projections of gas infrastructure development and natural gas consumption up to 2030. 4.1. Expert Analyses of Partial Indicator Expert analyses with questionnaires were provided for partial indicator administrative applicability (A1) and the indirect environment effect (E3) ...
    ... Center for Joint Research in Italy [30] and the global energy architecture performance index, proposed by the World Economy forum [31]. Multi-criteria analyses are another tool used to support decision-making [32–34]. These kinds of models can be used to analyze both qualitative and quantitative aspects of ...
    ... policies or scenarios and rank them individually according to their assessment and a set of predefined criteria. Various methods of multi-criteria analyses have so far been used to assess energy development scenarios: AHP (analytical hierarchy process), MAUT (multi-attribute utility theory), SMART (simple ...

  • Groundwater management by riverbank filtration and an infiltration channel, the case of Obrenovac, Serbia

    Dušan Polomčić, Bojan Hajdin, Zoran Stevanović, Dragoljub Bajić, Katarina Hajdin (2013)

  • The Importance of Geotechnical Investigations for the Construction of Transfer Station „Prelići“ on Landfill in Cacak – Serbia

    Dragoslav Rakić, Irena Basarić, Jovana Janković, Tina Đurić (2019)
    For the purpose of the facilities construction within the transfer station „Prelici“ in Cacak, specific geotechnical investigations were carried out based on which the technological project with the facilities schedule was developed. Significant deviations in relation to the presented results were determined during earthworks, so the additional geotechnical investigation works were carried out. Since the new investigation works have determined a different cross section of the terrain, it was proposed to move the planned facilities which led to the ...
    landfill, geotechnical investigations, transfer station
    ... on for the construction of mentioned facilities in technical-technological sense, we started from the following points (Rakic et al, 2011): • analyses and terrain preparation based on local geotechnical conditions, • the possibility of joint use of related equipment and space, without doubling ...

  • Tectonic evolution of the Vršac Mts. (NE Serbia): Inferences from field kinematic and microstructural investigations

    Uroš Stojadinović, Nemanja Krstekanić, Bojan Kostić, Marija Ružić, Aleksa Luković (2021)
    The Vršac Mts. in NE Serbia represent the key area to investigate structural relations between the Northern Serbo-Macedonian Subunit and Supragetic Unit of the Dacia Mega-Unit. The geodynamic events during the Variscan orogeny in the Late Paleozoic colligated the two units and led to their metamorphic differentiation. The Late Cretaceous extension exhumed the medium-grade Serbo-Macedonian metamorphic rocks and structurally juxtaposed them against the low-grade metamorphosed basement of the Supragetic Unit along an E-dipping shear zone, which outcrops in the ...
    severna srpsko-makedonska subjedinica, supragetikum, kinematska analiza, multifazna ekstenzionalna deformacija
    ... amphibolite facies (500 °C, 0.5-0.7 GPa); Retrograde: greenschist facies? V4 45°08’13.50”N 21°23’47.50”E 077/49° 042/40° muscovite, biotite, quartz, microcline, plagioclase, orthoclase, garnet, sericite Primary: amphibolite facies (550 °C, <0.7 GPa); Retrograde: greenschist facies? 403TECTONIC ...
    ... apatite greenschist facies (400° C, 0.3 GPa) V2 45°08’11.90”N 21°23’58.89”E 063/40° 056/35° muscovite, biotite, quartz, plagioclase, orthoclase, epidote, chlorite, garnet, accessory apatite Primary: amphibolite facies (500 °C, 0.5-0.6 GPa); Retrograde: greenschist facies (400 °C, 0.3-0.5 GPa) ...
    ... Geological setting The Vršac Mts. metamorphic core is comprised of medium- grade amphibolite facies metamorphic rocks of the Northern Serbo-Macedonian Subunit in contact with low-grade green- schist facies metamorphic rocks of the Supragetic Unit (Figs. 2 and 3, Kräutner & Krstić 2003; Matenco & ...

  • Mesozoic carbonate rocks in Serbia used as dimension stone

    Vesna Matović, Tijana Vojnović Ćalić (2016)
    The building industry in Serbia uses, to a great extent, imported natural stone for architectural purposes. The significance of local deposits, particularly limestones, is not adequately perceived despite the country’s abundance of these valuable resources. Therefore, this study focuses on Serbia’s Mesozoic carbonate rocks, specifically on the deposits of four selected quarries: Klisura, Skrzut, Struganik, and Tisnica. The quality and prospects of the application of these limestones has not yet been the subject of a detailed, comprehensive investigation. Therefore, ...
    Ukrasni kamen, Mezozoik, Krečnjak, Srbija, Petrografija, Fizičko-mehanička svojstva
    ... Beljanica Mountain (Fig. 1). The Tisnica quarry is composed of layered and banked limestone of the Lower Cretaceous age corre- sponding to Urgonian facies. Flowing in a N-S direction, the river Tisnica splits the deposit in two (Fig. 1d). The exploitation takes place at a few exploitation levels on ...
    ... Posebna izdanja 18: 25—26 (in Serbian) Sudar MN, Gawlick HJ, Lein R, Missoni S, Kovacs S, Jovanović D (2013) Depositional environment, age and facies of the Middle Triassic Bulog and Rid formations in the Inner Dinarides (Zlatibor Mountain, SW Serbia): evidence for the Anisian break- up of ...
    ... total, 81 stone samples were collected (Klisura—12 samples, Skrzut—six samples, Struganik—28 samples, and Tisnica—35 samples). Petro- graphic analyses of the rocks was performed on thin sec- tions using a Leica DMLSP microscope for polarized light connected to a Leica DC 300 digital camera. The ...

  • 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

  • Sustainable Modularity Approach to Facilities Development Based on Geothermal Energy Potential

    Nataša Čuković-Ignjatović, Ana Vranješ, Dušan Ignjatović, Dejan Milenić, Olivera Krunić (2021)
    The study presented in this paper assessed the multidisciplinary approach of geothermal potential in the area of the most southeastern part of the Pannonian basin, focused on resources utilization. This study aims to present a method for the cascade use of geothermal energy as a source of thermal energy for space heating and cooling and as a resource for balneological purposes. Two particular sites were selected—one in a natural environment; the other within a small settlement. Geothermal resources come ...
    геотермална енергија, Панонски басен, геотермална каскада, енергетска ефикасност, бањски центри, балнеологија, биоклиматска архитектура, стратегије пасивног дизајнирања, модуларни објекти
    ... which excludes possible circulation in granitic field. α β γ δ ∆ = × 4.5 × 16 Figure 9. (a) D’Amore parameters diagram of chemical analyses; (b) α: evaporative terrains; β circu- lation in limestone; γ: circulation through a crystalline basement; δ: circulation in argillaceous rocks. ...
    ... which excludes possible circulation in a granitic field α β γ δ ∆ = × 12 × 19 Figure 10. (a) D’Amore parameters diagram of chemical analyses from Table 3; (b) α: evaporative terrains; β circulation in limestone; γ: circulation through a crystalline basement; δ: circulation in argillaceous ...
    ... Architecture. Conflicts of Interest: The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results. References 1. Morrone, P.; Algieri, A. ...

  • The effect of finite driving rate on avalanche distributions

    Sonja Radić, Sanja Janićević, Dragutin Jovković, Đorđe Spasojević (2021)
    Statistics, Probability and Uncertainty,Statistics and Probability,Statistical and Nonlinear Physics

  • Study of the Synergetic Effect of Co-Pyrolysis of Lignite and High-Density Polyethylene Aiming to Improve Utilization of Low-Rank Coal

    Ivan Kojić, Achim Bechtel, Nikoleta Aleksić, Dragana Životić, Snežana Trifunović, Gordana Gajica, Ksenija Stojanović (2021)
    Polimeri i plastika, opšta hemija
    ... molecular parameters was performed by integrating peak areas using the ChemStation Enhanced Data Analysis Software (Agilent Technologies). The mentioned analyses were performed at the University of Belgrade, Faculty of Chemistry. 2.6. Specific Carbon Isotope Analysis of Individual Hydrocarbons in Lignite EOM ...
    ... EL III CHNS/O Element Analyzer (Elementar Analysensysteme GmbH, Langenselbold, Germany). Ash yield measurements followed ISO 1171 (1997) [49]. Both analyses were performed at University of Belgrade, Faculty of Chemistry. 3. Results and Discussion 3.1. TGA Analysis Figure 1a shows the TGA curve and derivative ...
    ... is focused on the lignite/HDPE synergetic effect with particular attention devoted to liquid and solid products obtained by co-pyrolysis, specific analyses (GC–MS, Rock-Eval, carbon isotope measurements) were performed on products obtained at 400, 450, and 500 ◦C. Polymers 2021, 13, 759 10 of 25 3 ...

  • Composition of organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in East Herzegovina (External Dinarides, Bosnia and Herzegovina)

    Nikoleta Aleksić, Aleksandar Kostić, Miloš Radonjić (2021)
    This paper presents the first data on the organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in the East Herzegovina region of the External Dinarides. Representative, organic-rich samples from outcropping sedimentary rocks of different ages in the area (Triassic to Neogene) were selected and analysed. The organic matter was studied by Rock-Eval pyrolysis and under the microscope in reflected non-polarized light and incident blue light. The results obtained show the presence of different types of organic ...
    nafta i gas, Rock-Eval, refleksija vitrinita, maceral, termička zrelost
    ... 255–279. Clementz, D. M., 1979. E�ect of oil and bitumen saturation on source rock pyrolysis. AAPG Bulletin, 63: 2227–2232. Cook, A. C., 1982. Organic facies in the Eromanga Basin. In: Moore, P. S. & Mount, T. J. (eds), Eromanga Basin Symposium. Geological Society of Australia and Petroleum Exploration ...
    ... Geological and Mining Exploration and Investigation of Nuclear and Other Mineral Raw Materials, Belgrade. Ercegovac, M. & Kostić, A., 2006. Organic facies and palynofacies: Nomenclature, classi�cation and applicability for petroleum source rock evaluation. International Journal of Coal Geology, 68: ...
    ... Organization for Standardization, Geneva, 14 pp. Juračić, M. & Palinkaš, A. P., 2004. Adriatic-Dinaridic Mesozoic carbonate platform, environments and facies from Permian to recent time. In: Guerrieri, L., Rischia, I. & Serva, L. (eds), Field Trip Guide Book P-53. Volume 5, XXXII International Geological ...

  • Formative evaluation of e-learning projects with the logical framework approach

    Roberto Linzalone, Giovani Schiuma, Ivan Obradović, Ranka Stanković (2015)
    ... promise of a ‘‘white box’’ approach. Furthermore, this type of analysis of the inner components and the logic of the system can enable needed analyses leading to improvement of 'theoretical model' of the project [22]. 4. APPLICATION OF THE LOGICAL FRAMEWORK APPROACH FOR THE FORMATIVE ...

  • Development of A Business Intelligence Tool For Accident Analysis in Mines

    Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Uroš Pantelić (2015)
    ... cannot learn through experience what happens when something goes wrong under certain conditions. Rather, they have to rely on protocols, post-hoc analyses of past incidents, and transfer of knowledge gained in other circumstances that can be applied in potentially critical situations. Mining org ...

  • Effects of Energy Production and Consumption on Air Pollution in Serbia

    Marija Živković (2019)
    Energy production and combustion, mostly from unregulated or inefficient fuel combustion, are the single most important anthropogenic sources of air pollutant emissions. Energy sector in Serbia is highly fossil fuel intensive: 87.88% of energy consumed in Serbia is related to fossil fuels, while almost 95% of energy sources are combusted. In 2017. energy related carbon dioxide emission in Serbia is was 47.95 million tones. The main source of carbon dioxide emission was coal, responsible for almost 70% of energy ...
    energy related emissions, Serbia
    ... The main source of carbon dioxide emission was coal, responsible for almost 70% of energy related carbon dioxide emission in the country. Further analyses indicate that about 60% of annual carbon dioxide emission in is a consequence of electricity generation in TPPs. Nitrogen oxides emission from the ...

  • 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
    ... FAHP scale. Step 2. An extent analysis is undertaken of all the elements in the matrix from the previous step. This results in m values of step analyses for each element of set X: ]W;„]Wž, ... ,]W;il, + = 1,2,...,n, where all MŠ„» J = 1,2,...,m are triangular fuzzy numbers. Then, taking into ...

  • Split-Desktop software for the analysis of fragment size distribution of blasted rock mass

    Milanka Negovanović, Lazar Kričak, Stefan Milanović, Jovan Marković, Nikola Simić, Snežana Ignjatović (2023)
    Drobljenje stena je najvažniji pokazatelj u proceni efekata miniranja pri proizvodnom miniranju u površinskoj eksploataciji. Stepen drobljenja stena ima veliki uticaj na efikasnost daljih operacija utovara, transporta, drobljenja i mlevenja. Optimalno drobljenje stena pri proizvodnom miniranju utiče na smanjenje ukupnih troškova proizvodnje. Stoga je pouzdana procena veličine drobljenja odminirane stenske mase veoma važno pitanje, ne samo u operacijama miniranja, već i u rudarskoj proizvodnji. Za predviđanje distribucije veličine komada odminirane stenske mase postoje različiti empirijski modeli. KUZ-RAM model omogućava ...
    Split-Desktop softver, drobljenje stena, miniranje, analiza, digitalna obrada fotografija

  • 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
    ... from the stock material of each of the seven bio- chars for the investigations in Belgrade (SEM, XRD, FT-IR, Raman, titrations), the chemical analyses, XPS, and SIP in Julich. Subsamples were taken from these samples for each ofthe determinations. For each of the chemical analysis (C, H, N; oxygen; ...
    ... the apparatus. AC2 was first eluted with water to remove phosphoric acid and then pre- treated as described above. Chemical analysis. Element analyses for C, N and H were performed on a Vario EL cube (Elementar Analysensysteme GmbH, Langenselbold, Germany). All chars were dried at 106 "C until ...
    ... stretch vibrations of aliphatic groups. Spectral features are discussed using potential structural units in accordance with the chem- ical and XPS analyses. They include the aromatic matrix, aliphatic and olefinic structures as well as oxygen functional groups [84] and inorganic components. The spectra ...

  • Critical disorder and critical magnetic field of the nonequilibrium athermal random-field Ising model in thin systems

    Svetislav Mijatović, Dragutin Jovković, Sanja Janićević, Đorđe Spasojević (2019)
    Изингов модел, критично понашање, танки системи

  • Mikroorganizmi - biohidrogeološki indikatori odabranih pojava mineralnih voda Srbije

    Vladimir Šaraba (2021)
    Sa namerom definisanja hidrogeološke uloge i značaja mikrobiološkog diverziteta odabranih pojava mineralnih voda Srbije, primenom sistema biodetektora, dokazano je prisustvo gvožđevitih, sulfato-redukujućih, sluz-produkujućih, heterotrofnih aerobnih i denitrifikacionih bakterija, na osnovu čega je proračunat rizik od razvoja procesa biokorozije i biohemijske inkrustacije, te zdravstveni rizik. Uz procenu rizika, izvedene su analize skenirajuće elektronske mikroskopije biofilmova i hidrogeohemijsko modeliranje, te makroskopska, otpička i difrakciona ispitivanja naslaga inkrustacije, dok je fizičko-hemijskim analizama utvrđena vrednost ukupne mineralizacije iznad 1 g/L, kao i povišeni ...
    biohidrogeologija, SEM analize, makroskopska i optička ispitivanja, rendgenska difrakcija praha, hidrogeohemijsko modeliranje, BART analize, metabarkoding analize mikrobioma, fizičko-hemijske analize, starenje bunara (biokorozija, biohemijska inkrustacija i biozarastanje), zdravstveni rizik
    ... gical research methodology. Keywords: biohydrogeology, SEM analyses, macroscopic and optical assessment, X-ray powder diffraction, hydrogeochemical modelling, BART analyses, metabarcoding of microbiomes, physical and chemical analyses, well aging (biocorrosion, biochemical encrustation and biofouling) ...
    ... encrustations and SEM analyses of phototrophic microbial mats from wellheads and select zones of emergence of mineral water in Serbia.Geologia Croatica, 72(2), 145-162. Doi: https://doi.org/10.4154/gc.2019.09 Šaraba, V., Stanojević, O., & Dimkić, I. (2019b). Metagenomic microbiome analyses of naturally carbonated ...
    ... microscopy of biofilms, hydrogeochemical modelling and macroscopic, optical and diffraction examination of the encrustations. Physical and chemical analyses indicated total dissolved salts of more than 1 g/L and elevated concentrations of certain metals and non-metals. Metabarcoding of the microbiomes ...

  • Hydrographic and hydrological characterization of the Vodenička and Rosomačka rivers

    Vesna Ristić Vakanjac, Marina Čokorilo Ilić, Dušan Polomčić, Dragoljub Bajić, Jelena Ratković (2017)
    The Visočica River rises in Bulgaria, on the Berovo Mountain. Its course in Bulgaria is 16.7 km long. It enters Serbia near the village of Donji Krivodol. Up to the village of Pakleštica, or the beginning of Lake Zavoj, its right-bank tributaries are the Krivodolštica, the Vodenička, the Rosomačka and the Dojkinačka. There are no left-bank tributaries. Among the tributaries, water levels and discharges are gauged only on the Dojkinačka River. The Vodenička had also been gauged but only ...
    hydrographic characteristics, river discharge, the Vodenička River, the Kamenička River
    ... presents a preliminary assessment of annual and monthly discharges of the Rosomačka and the Vodenička. Topographic water divides were used for the analyses. Key words: hydrographic characteristics, river discharge, the Vodenička River, the Kamenička River ...