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Упит dcterms_creator_txt:Ş. Can Genç

637 items

  • Projecting short to medium-term effects of carbon emissions trading on Serbia's GDP

    Boban Pavlović, Nikola Trtica (2024)
    This paper presents an approach to assess the short to medium-term effects of the Emissions Trading System (ETS), an economic and climate policy instrument aimed at reducing greenhouse gas emissions, on GDP from the expenditure side. The analysis focuses on Serbia’s electricity sector, which relies heavily on lignite-based pro duction dominated by state-owned enterprises. The obtained projections suggest that in the short term, the introduction of an ETS may lead to slower GDP growth compared to official forecasts. However, ...
    ETS, BDP - rashodni pristup, cene električne energije
    ... decreases; by 2030, it amounts to 0.6%. This result can primarily be explained by the drop in revenue from the ETS due to the downward trajectory of GHG emissions, which results from increased investments in RES. The substantial effects of Scenario 3 can be interpreted by the fact that this scenario ...
    ... in elec- tricity production. Thus, while the risks of negative effects from carbon pricing exist, proper management and reinvestment strategies can mitigate them. Li et al. (2014) use a Computable General Equilibrium (CGE) model to evaluate the effects of carbon pricing in China, incorporating ...
    ... during short-term economic fluctuations, when productive capacity may be underused (leading to unemployment and idle machines), demand-side effects can become particularly significant (Williams, 2015). In such cases, analyzing the expenditure side of GDP could be crucial because it involves examining ...

  • Extensive vibrations of the belt conveyer drive electromotor of a bucket wheel excavator as a result of intesified wear-and-tear of its mount support

    Vesna Damnjanović, Predrag Jovančić, Snežana Aleksandrović (2017)

  • BEYOND 2020 - Geology explorations and open pit activities affectation in reclamation designing in Kolubara Coal Mines (KCM) Serbia, new considerations

    Bojan Dimitrijević, Bogoljub Vučković, Radmila Gaćina (2023)
    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 ...

  • Funkcionisanje i uticaj epikarsta na režim, bilans i kvalitet podzemnih voda istočnog dela karstnog sistema Suve planine

    Branislav Z. Petrović (2020)
    Epikarst je deo karstne izdani koji se nalazi u okviru nadizdanske zone i predstavlja kompleksnu tačku dodira i mešanja nekonsolidovanog materijala sa površine terena, ostataka karbonatnih stena izmenjenih korozivnim delovanjem vode, živog sveta i njihovih ostataka, koja je delimično zasićena podzemnom vodom. Kompletan sud o stepenu razvoja i prisustva epikarsta na nekom krečnjačkom terenu moguće je doneti uz multidisciplinarna i obavezna detaljna hidrogeološka istraživanja. Poligon za sprovedena istraživanja je bio karstni masiv Suve planine, koja u geološkom i geografskom smislu ...
    epikarst, karstni sistem, podzemne vode, procesi samoprečišćavanja, hidrohemijski i mikrobiološki procesi u podzemnoj vodi

  • ‘Blue-’ and ‘Brown-speckled’ pottery from Qalhât, the Sultanate of Oman (13–16th centuries): Comparison with traditional Omani 19–20 century productions

    Liliana Gianni, Hélène Renel, Aleksandar Kremenović, Philippe Colomban (2020)
    Representative ‘Blue speckled’ (13–16th centuries) and ‘Brown speckled’ (13–21st century) wares recovered from the excavations in Qalhât or collected around Bahlâ city (Sultanate of Oman) were characterized by XRPD, SEM-EDS, Raman/optical microspectroscopy, and thermal expansion. Minerals present in the body (quartz, augite and albite as major phases, calcite, dolomite, rutile, anatase, phosphate, hematite and magnetite as minor phases) were identified by XRPD and/or Raman spectroscopy. SEM-EDXS microanalysis was performed on the glazes in order to compare their composition, especially ...
    Firing, Glaze, Traditional ceramics, Provenance studies, Augite

  • 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
    ... significant problem, as these hydrocarbons can be more easily converted into branched and cyclic hydrocarbons than n-alkanes, via reforming processes, giving an op- portunity for producing high octane rating gasoline. On the other hand, terminal n-alkenes can be separated and used as chemical feedstock ...
    ... processes for its recycling. However, concerning the huge amount of produced HDPE, at least part of this plastic material can be reused for advanced treatment of lignite, which can replace environmentally non-friendly household combustion, particularly in countries where this low-rank coal represents ...
    ... ped catalytic thermal processes for polymer recycling. However, concerning the huge amount of produced HDPE, at least part of this plastic material can be reused for advanced thermal treatment of lignite, particularly in countries where this low-rank coal represents the main source of energy. Keywords: ...

  • 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)
    flotacijska jalovišta, životna sredina, višekriterijumska analiza, ekologija, Trepča
    ... unsuitably placed and the current lack of maintenance in addition to the disposed materials can permanently endanger the living environment. At the same time, these ponds represent a potential danger which can reach the category of ecological disasters. Numerous activities of the local population are ...
    ... tailing waste deposits was obtained, regarding their environmental impact: Žitkovac, Tvrd̄anski Do, Bostanište, Gornje Polje and Žarkov Potok. This result can contribute to the decision-making process of a prioritizing strategy for rehabilitation and remediation of these five flotation tailings. The analysis ...
    ... for the tailing waste Bostanište, the particles are sized between 0.1 mm and 0.2 mm diameter [19]. These results point to the fact that the particles can be driven by the wind and water in both the close and remote sampled distances. Energies 2016, 9, 935 6 of 18 Table 3. Heavy metal concentration ...

  • BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties

    Marija Šuljagić, Ivan Petronijević, Miljana M. Mirković, Aleksandar Kremenović, Adis Džunuzović, Vladimir B. Pavlović, Aleksandra Kalezić-Glišović, Ljubica Andjelković (2023)
    To investigate the influence of spinel structure and sintering temperature on the functional properties of BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1), NiFe2O4, ZnFe2O4, and Ni0.5Zn0.5Fe2O4 were in situ prepared by thermal decomposition onto BaTiO3 surface from acetylacetonate precursors. As-prepared powders were additionally sintered at 1150 °C and 1300 °C. X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS) were used for the detailed examination of phase composition and morphology. The magnetic, dielectric, and ...
    ferroelectric, dielectric properties, magnetic properties, titanate/ferrite composites, phase composition
    ... Figure 7, indicates that experimental data can be fitted with two circles whose centers are not located on the Z' axis. This type of modeled circle is typical for the samples which have no singlle relaxation time (T), but several of them whose distribution can be presented with mean relaxation time ...
    ... The perovskite compounds are one of the most promising, types of magnetoelectric multiferroics [10-14]. The advantages of these novel materials can support the development of advanced devices and technologies [15-20]. There are only a few known multiferroic materials that combine the mutually exclusive ...
    ... 3390/inorganics11020051 https:/ /www.mdpi.com/journal/inorganics Tnorganics 2023, 11, 51 2of 19 phases [21-27]. Such heterostructured materials can satisfy technological requirements by varying, the microstructure of their constituents, their volume fraction, and/or the phase composition [28 ...

  • 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
    ... and mechanical strength of a ceramic object. However, the association of two brittle materials, i.e., a composite material, can give rise to a nonbrittle material which can resist fracture [1-3]. Defects no longer determine the ultimate strengith of such a material, and it becomes possible to predict ...
    ... identification of the mineral phases in amounts more than ca. 1%. 3.2. Evidence of Asbestos Fibers Visual and optical microscopic examination can easily detect the presence of long fibers: see in particular, in Figure 1, the right-hand side of sample d (close to the scale) and the top left-hand ...
    ... fibers by the turning: movement and pressure of the hands. The diameters of the individual fibers range between about 100 nm and 1 hm, and the length can reach a few centimeters. The fibers form heaps and clumps, and big grains are visible (see, e.g., Figure l1a, spots 3, 4,8 and 6). The red color ...

  • Sitni, ali bitni: uloga sitnih sisara, herpetofaune i mekušaca u rekonstrukciji pleistocenskih paleosredina

    Katarina Bogićević, Draženko Nenadić, Dragana Đurić, Mihajlo Jovanović, Aleksandra Savković (2023)
    Fosilni ostaci životinja i biljaka imaju važnu ulogu u rekonstrukciji pleistocenskih paleosredina. U ovom radu opisan je značaj tri grupe životinja: sitnih sisara, herpetofaune I mekušaca. Mada je za rekonstrukciju važan sastav čitave asocijacije, nalasci pojedinih vrsta mogu biti dovoljno indikativni da otkriju tip staništa ili klimatske uslove. Posebnu teškoću pri rekonstrukciji paleosredina u Srbiji predstavlja činjenica da klimatske promene na Balkanskom poluostrvu nisu bile tako oštre kao u srednjoj i zapadnoj Evropi, pa ne postoji drastična razlika u ...
    ... palaeoclimatic conditions. Characteristic species or index-fossils can provide valuable information about the climatic characteristics of an area, since certain species are specially adapted to cold or warm climate. Thus, for example, it can be concluded that during the Pleistocene, cold and warm phases ...
    ... Based on the analogy with modern Corbicula, t can be concluded that deposits with the presence of their Pleistocene counterparts were created during warm climatic stages. Very important data on the palaeoclimatic characteristics of the environment can also be obtained by geochemical studies of oxygen ...
    ... of shells from successive lineages can provide not only information on seasonal climate variations, but also data on global climate changes. Based on the remains of molluscs, other significant data useful for the reconstruction of palaecoenvironments can be obtained, such as whether the immediate ...

  • Crystal structure of K3EuSi2O7

    Sabina Kovač, Predrag Dabić, Aleksandar Kremenović (2021)
    alkalni silikati elemenata retkih zemalja, kristalna struktura, sinteza metodom fluksa, rendgenska difrakcija na monokristalu
    ... interesting and promising materials for different applications. REE silicates also exhibit a broad structural diversity.10 A highly adaptive framework can incorporate almost all REEs and this opens the possibility of synthesizing numerous structures and structural series of REE-containing silicates ...
    ... (OC-6), as well as one EuO6 trigonal prism (TPR-6) (Fig. 2). Three differently coordinated potassium cations are located between them. The structure can also be described as regular alternation of two types of layers, which are parallel to the (001) plane: (I) octahedral layers and (II) sorosilicate ...
    ... different coordination environments. The coordination sphere of K1 includes eight oxygen ions and forms a K1O2+4+2 coordination polyhedron which can be described as a distorted hexagonal pyra- mid with a split apex [distances range from 2.770 (5) to 3.049 (5) Å]. K2 atom is coordinated by nine oxygen ...

  • Self-Engineering: Possibilities for Maintenance Operations in the Mining Machines Industry

    Steven Manders, Milorad Pantelić, Vladimir Milisavljević, Alberto Martinetti (2021)
    Self-engineering is a relatively new branch of knowledge that aims to understand how systems could “autonomously” re-configure or repair themselves without the intervention of the operators. A direct field of application is within the maintenance spectrum. Having systems or machines capable of self-detecting or even self-repairing could represent a game-changer, in capital asset fields such as the mining industry in particular. This paper aims to investigate the possible benefits and challenges of self-engineering / self-maintenance concerning mining machines, specifically bucket-wheel ...
    self-engineering, self-maintenance, maintenance operations, mining industry, bucket-wheel excavator, gearbox revitalization

  • Polyhedral characteristics of the cosalite-type crystal structures

    Sabina Kovač, Predrag Dabić, Aleksandar Kremenović, Aleksandar Pačevski, Ljiljana Karanović, Marko V. Rodić, Martina Tribus (2019)
    kristalna struktura, kozalit, poliedarske karakteristike

  • Multihazard Exposure Assessment on the Valjevo City Road Network

    Miloš Marjanović, Biljana Abolmasov, Svetozar Milenković, Uroš Đurić, Jelka Krušić, Mileva Samardžić Petrović (2019)
    Prirodni hazardi, izloženost, klizišta, poplave, bujice, GIS, R

  • 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
    ... this channel, which, due to high hydrostatic pressures, pushes older water out; however, it can also be concluded that certain amounts of old groundwater discharge during high water periods, which can be seen from the fairly uniform water temperatures and other physico-chemical parameters observed ...
    ... 11146 13of14 Based on the obtained data, it can be assumed that with a newly drilled 600 m borehole, groundwater with temperatures greater than 35 "C could be extracted. Without new drilling, the thermal water at a temperature of 26 "C in Krupaja can be additionally heated with the use of a heat ...
    ... uses the water accumulated in karstic aquifers [1-3]. The goal of karst groundwater research, especially the speleogenesis of its main conduits, can be very diverse, starting from the wish to discover the new and unknown (e.g., through speleological and speleo diving, research), all the way to ...

  • Definition of groundwater genesis and circulation conditions of the complex hydrogeological karst system Mlava–Belosavac–Belosavac-2 (eastern Serbia)

    Ljiljana Vasić, Saša Milanović, Zoran Stevanović, Laszlo Palcsu (2020)
    Geochemistry and Petrology

  • Mineral Resources of Serbia: Environmental, Societal and Economic Challenges

    Vladimir Simić, Rade Jelenković, Dragana Životić (2019)
    ... (Janković, 1990; Kovačević, 2004; Oljača, 2008). Allelopathic matters can be dissolved in water, can be gaseous, complex or simple, resistant or short lasting. They can be washed off the leaves or they can evaporate from them, they can represent some secretions of roots or demolishing products of plant ...
    ... important sources of plant protein and oils in the world. In addition to grains and whole soybean plant can be quality forages. Soybeans can be cultivated as the main or the second crop, then it can be grown as pure crop or as intercropping. Soybean has a wide distribution areal due to different maturity ...
    ... and use can release PAHs to the environment. Evaporation of lighter fractions from crude oil and derivatives can be a significant source of lighter PAHs compounds in the air (Mihajlović et al. 2013). Coal emissions from mining activity, but also transport, storage and use of coals can be an important ...

  • Models of Determining the Parameters of Rock Mass Oscillation Equation with Experimental and Mass Blastings

    Suzana Lutovac, Branko Gluščević, Rade Tokalić, Jelena Majstorović, Čedomir Beljić (2018)
    ... and felt as shock, i.e., rock mass vibration. Shock or rock mass oscillation can be a consequence of natural processes or human activities (in the performance of mining). Measurements and monitoring of seismic processes can be done in different ways, depending on the cause of the shock [1]. Intensity ...
    ... and K from Sadovskii’s equation were determined in three ways—models in the given work environment. It was noted that, in practice, all three models can be successfully used to calculate the oscillation velocity of the rock masses. Keywords: working environment; blasting; seismic effect; rock mass o ...
    ... seismic effect of blasting towards a facility or a settlement, whereby the connection, between the velocity of soil oscillation and consequences that can affect facilities, is used. The equation of M.A. Sadovskii [7] is given in the form: v = K·R−n = K· ( r 3 √ Q )−n (2) where there are: v—the velocity ...

  • Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)

    Saša Ivanišević, Dejan Radivojević (2018)
    Exploration for oil and gas in mature areas, such as the Pannonian Basin, can benefit from reexamination of old data using more advanced modern workflows that focus on the temporal and spatial aspects of sediment deposition. Specifically, we apply a new environment of deposition model that interprets the Upper Miocene- Pliocene sediments as being deposited in a rapidly filling basin characterized by quick shelf edge progradation from the northwest toward the southeast. Reconstruction of this shelf edge trajectory reveals ...
    naftna geologija, depozicione sredine, formacije, Panonski basen

  • Determination of Mechanical Properties of Altered Dacite by Laboratory Methods

    Veljko Rupar, Vladimir Čebašek, Vladimir Milisavljević, Dejan Stevanović, Nikola Živanović (2021)
    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 ...
    Geology, Geotechnical Engineering, Engineering Geology
    ... σci UCS, σci TX, and constant mi. Obtained σci TX and constant mi dependences define more reliable rock material strength parameter values, which can be used, along with rock mass classification systems, as a basis for assessing rock mass parameters. Therefore, it is possible to predict the strength ...
    ... values 0,; UCS | ¢;!%, and constant m;. Obtained 7 ,;!* and constant m; dependences define more reliable rock material strength parameter values, which can be used, along with rock mass classification systems, as a basis for assessing rock mass parameters. Therefore, it is possible to predict the strength ...
    ... strength tests results performed in this study and compare the results of previous study of heterogeneous rock materials [1,4,6]. The actual values of GSI can be determined by detailed geological cores mapping from exploration boreholes and the open pit slopes, which makes it possible to determine the real ...