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Упит dcterms_subject_txt:melioration area

515 items

  • Geodynamics of basins above subducted slabs: An integrated modelling study of tectonics, sedimentation, and magmatism in the Timok Magmatic Complex

    Uros Stojadinovic, Marinko Toljic, Branislav Trivic, Radoje Pantovic, Danica Sreckovic-Batocanin, Nemanja Krstekanic, Bojan Kostic, Milos Velojic, Jelena Stefanovic, Nikola Randjelovic, Maja Males (2024)
    Timok Magmatic Complex, Neotethys subduction, basin geodynamics, analogue modelling

  • Using gravity data to define structural correlation affecting the formation of Neogene basins

    Snežana Ignjatović, Ivana Vasiljević, Branisav Sretković, Milanka Negovanović (2023)
    A gravity survey can help to define the structural correlation in the study area. The structures that have influenced the development of Neogene basins can be defined using gravity data. By applying mathematical transformations to gravity data, the geological structures (faults, nappes, etc.) that impacted the formation of Neogene basins can be defined. We have taken the part of the Dinarides as the test region. The paper presents the results obtained using the procedure residual, vertical gradient, and total ...
    gravity survey, mathematical transformation, basin

  • Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability

    Marija Živković, Dejan Ivezić (2021)
    Transformation of the heating sector is recognized as being essential for ensuring reliable and afordable energy services provided with reduced consumption of energy sources and diminished impact on the environment and less import dependency. The possibility of utilizing energy sources that otherwise would be wasted needs to be considered and treated as a big advantage of district heating systems. Despite many advantages, sewage wastewater heat is still a mostly unused resource at the global level and a totally unused ...
    рекуперација топлоте из отпадних вода, систем даљинског грејања, топлотне пумпе, енергетске уштеде, емисија угљендиоксида, енергетска безбедност, Србија
    ... electricity production Qdel,j Delivered heat to the jth consumer qDD Useful annual heat supplied per degree day and heating area DD Number of degree days Ai Heating area of the ith consumer Id Import dependency pi Fraction of the ith input energy carrier/fuel in the fuel mix ( ∑ pi = 1) Id ...
    ... jth consumer, DD [ ∕ ] Number of degree days, A i [ m 2 ] Heating area of the ith consumer. In the approach adopted in this research, the value of use- ful annual heat supply per degree day and per heating area remains as the current value, providing a straightforward evaluation of the ...
    ... for analysis focusing on district heating systems’ energy performance (primary energy factor, specific heat consumption per degree day and heating area), the security of energy supply (import dependency, Shannon–Wiener diversification index, the share of renewables) and environmental impact (carbon ...

  • Definisanje strukturnih odnosa primenom postupka horizontalni gradijent

    Snežana Ignjatović, Ivana Vasiljević, Natalija Jovanović (2019)
    Različiti postupci matematičkih transformacija se mogu primeniti na gravimetrijskim i magne tometrijskim podacima, kako bi se na istražnom terenu definisali strukturno-tektonski odnosi. U radu su prikazani rezultati dobijeni korišćenjem postupka horizontalni gradijent i ukupni horizontalni gradijent na gravimetrisjkim podacima. Navedeni postupci su pomogli da se detektuju kontakti sa velikim padnim uglom (vertikalni ili subvertikalni kontakti), koji se mogu interpretirati kao rasedi. Za test područije uzet je istražni prostor koji se nalazi na jugoistoku Srbije u okolini Vranjskog basena. Položaji ...
    gravimetrijski podaci, matematičke transformacije, rased, Vranjski basen
    ... subvertical contacts), which can be interpreted as faults. For the test area we take the study area located in southeast Serbia around Vranje basin. The positions of neotectonics faults detected during geological survey in the area of the Vranje basin partially coincides with contact obtained using ...
    ... methods of mathematical transformation can be applied on magnetic and gravity data, in order to define structural and tectonic correlation in study area. In this paper we present the results obtained using the technique of the horizontal gradient and the total horizontal gradient on gravity data. ...

  • Projection of SO2 emissions in coal power plants in Serbia

    Aleksandar Madžarević, Predrag Jovančić, Stevan Đenadić, Filip Miletić, Miodrag Ristović, Miroslav Crnogorac (2023)
    The production of electricity in the countries of South-Eastern Europe (SEE) was mainly related to the use of coal, predominantly lignite. The total installed capacity of thermal power plants using coal in these seven countries is 17.813 MW, distributed in 31 thermoblocks. The mentioned plants are the dominant pollutant emitters in all observed countries. Data on the largest emitters in the countries of the European Union and a comparison with SEE countries were collected. The calculation of emissions of ...
    енергeтика, емисије, СО2, угаљ, електране
    ... change in energy sources, so the process of removing coal from clectricity generation has greatly intensified. In 2021, for the first time in the area of the European Union, more electricity was generated using solar and wind energy than coal. The idea of using the cleanest technologies has completely ...
    ... emissions from coal-fired power plants in Germany, Poland and Serbia [5, 11} Emissions Parameter Amount of emission [tons] 279200 102470 Ratio to the area of the territory [SO>»/km-] 3,15 0,33 Ratio to the number of inhabitants [kgSOyx/st] 40,88 1,23 Ratio to electricity production [keSOx/MWh] 11,63 ...
    ... limit. 4. CONCLUSION Air pollution from coal-fired thermal power plants knows no national borders. Through the paper, it was pointed out that the area of Southeastern Europe represents a region that is among the largest emitters of pollutants from coal burning. Therefore, it is extremely important ...

  • Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal

    Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović (2018)
    glukoza, fruktoza, аktivni ugalj, hidrotermalni tretman, aktivacija hidroksida, teški metali, metilen plavo
    ... phase produced at the surface of the activated carbon caused lowering of the BET surface area. Also, from Table 2, it may be seen that the KOH activated sample obtained from fructose possess a lower specific surface area in comparison with samples activated with NaOH that is opposite from samples obtained ...
    ... The factors which distinguished the KOH activated samples were high yield (~14%), content of organic carbon (63–74%), porosity and specific surface area (SBET ~700–1360 m2/g), a low degree of the crystal phase, indications that potassium ions may be included in heavy metals removal, good removal of the ...
    ... The factors which distinguished the KOH activated samples were high yield (~14%), content of organic carbon (63-74%), porosity and specific surface area (Sper ~700-1360 m?/ g), a low degree of the crystal phase, indications that potassium ions may be included in heavy metals removal, good removal of ...

  • Дефинисање археолошких објеката на локалитету Кремените њиве применом Ојлерове 3Д деконволуције на магнетометријске податке

    Весна Цветков, Илија Васиљевић, Бранислав Сретеновић, Весна Дамњановић (2018)
    ... nd is performed by moving the sensor pair. More precisely, both me‐ thods require the use of two sensors. If one sensor moves over the investigated area, the second sensor  must  be  at  the  base  point  and  it measures  the  daily  variations  of  the  Earth's magnetic  field.  Daily  variations, which  ...
    ...  which  intensities are usually 50‐100  nT  , are  removed by  subtracting data  from  the base  point from those measured in the investigated area.  An important parameter of the interpretation of magnetic measurements is defining the depth  at which the source of magnetic anomalies is located.  ...
    ... , since in all cases in the available literature for Euler's 3D deconvolution the  values of the total magnetic intensity (TMI) are used. The total area of the surveyed site is 2827  m2.    RESULTS AND DISCUSSION    Testing  Standard and  Located O3DD on  synthetic data has  shown  that both methods  ...

  • 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
    ... possible effect on Serbia's building and stone industry, and eventually the export market. @ Springer V. Matović, T. V. Ćalić Study area The study area includes four selected limestone quarries: Klisura (Fig. 1a), Skrzut (Fig. 1b), Struganik (Fig. 1c), and Tisnica (Fig. 1d). These are the ...
    ... territory of Sirogojno village (Fig. 1). The wide terrain, a hilly mountainous area with altıttudes ranging from 800 to 1,000 m, belongs to the northeastern edge of the Zlatibor massif. The Klisura quarry occupies an area of 0.12 km? at a few exploitation levels (Fig. 1a). The thickness of the ore ...
    ... town of Uzice. Similar to the Klisura quarry, the Skrzut quarry belongs to the northeastern edge of the Zlatibor massif (Fig.1). It occupies an area of approximately 4,000 m”. Natural exploitation levels follow planar bed- ding surfaces of limestone (Fig. 1b). The limestone ore body is elongated ...

  • A necessary and sufficient condition for an algebraic integer to be a Salem number

    Dragan Stankov (2019)
    We present a necessary and sufficient condition for a root greater than unity of a monic reciprocal polynomial of an even degree at least four, with integer coefficients, to be a Salem number. This condition requires that the minimal polynomial of some power of the algebraic integer has a linear coefficient that is relatively large. We also determine the probability that an arbitrary power of a Salem number, of certain small degrees, satisfies this condition.
    Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomials

  • Results of comprehensive monitoring activities on Umka landslide, Belgrade, Serbia

    Biljana Abolmasov, Uroš Đurić (2021)
    klizišta, monitoring
    ... radar satellite images, conventional geodetic monitoring network data and UAV imaging, processing and data analysis in the last six years. Study area The Umka landslide is formed on the right Sava river bank, 22 km southwest from Belgrade, and occupies part of Belgrade suburban settlement Umka ...
    ... 12 (4): 689-702. Ćorić S., Božinović D., Vujanić V., Jotić M. and Jelisavac B., 1996, Geotechnical characteristics of old landslides in Belgrade area. In: Senneset K (ed) Proceedings of the 7th International Symposium on Landslides, 17–21 June 1996, Trondheim, Norway, Vol 2, Balkema, Rotterdam, ...

  • Properties of fly ash and slag from the power plants

    Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić (2016)
    This paper describes the physical, chemical and mineral properties of ash and slag, which were taken from thermal power plants Nikola Tesla A, Nikola Tesla B, Kostolac A and Kostolac B. The knowledge of the mineralogical material composition is important because the type of minerals directly determines the properties of the fly ash and slag and their possible application. Laboratory tests showed that ash and slag samples consist of the following minerals: amorphous materials, quartz, feldspar, mullite, melilite, cristobalite, ...
    fly ash, slag, physical composition, chemical composition, mineral composition, X-ray diffraction method
    ... material. It falls through the latticed stokehole and is rapidly cooled and extinguished in water. The fly ash and slag landfills in Serbia occupy an area of 1639 ha and if they are under constant control and monitoring, significantly influence the dis- ruption of the environment, which is reflected ...
    ... possibility of fly ash and slag application as a construction substitute thus preservinglimited reserves of natural building materials. 2. STUDY AREA PPNT A is the most important producer of electricity in Serbia and is built on the bank of the river Sava. PPNT A is 4 km from Obrenovac, PPNT B ...
    ... The Kolubara lignite basin is economically one of the most important coal basins in Serbia. It is located about 60km SSW of Belgrade, and covers an area of almost 600km2, extending in an E-W direction for up to 55km, and in the N-S direction up to 15km. This basin is divided into several fields („A” ...

  • 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
    ... Herzegovina and Serbia. The Sava River Basin covers a catchment area of 95 719 km2, which is approximately 40 % of the countries’ combined total surface area and it is the source of more than 80 % of the total available freshwater in the area. Only a few publications have considered contamination of the ...
    ... ACTUAL CONTAMINATION OF SAVA AND DANUBE 1171 The River Danube is the second longest river in Europe with a length of about 2 800 km.13 Its catchment area covers 801 500 km2, with approximately 81 million inhabitants in 19 countries.14 The Danube flows through four capitals (Vienna, Budapest, Bratislava ...
    ... and P were determined.21 The present study focused on a comprehensive investigation on the state of pollution of the Danube and Sava Rivers in the area of their confluence, the Belgrade region. For these purposes, different complementary analytical approaches were used at different laboratories in ...

  • Hydrochemical changes and groundwater grouping data by multivariate statistical methods within one karst system: recharge–discharge zone (Eastern Serbia case study)

    Ljiljana Vasić, Dragana Živojinović, Vladana Rajaković-Ognjanović (2020)
    Geochemistry and Petrology

  • Палеомагнетски резултати из Тимочког магматског комплекса, Источна Србија

    Весна Лесић, Емо Мартон, Драган Лукић, Весна Цветков (2018)
    ... бања‐Борско језеро, 9‐Брестовац, 10‐Оштрељ, 11‐Доња Бела река, 12‐нови пут Бор‐Зајечар, 13‐Стрмен.  Figure 1. Simplified geological map of the studied area (after Banješević, 2010) with paleomagnetic sampling localities. Legend:  1: Campanian‐Maastrichtian  sediments,  2: plutonites,  3:  Senonian  and ...
    ... ian  and ended by deposition of reef sediments and conglomerates and sandstones    in Upper Campanian‐ Maastrichtian. The volcanic activity  in the area started  in Upper Turonian and ended  in Upper Campa‐ 750  nian.  Durring  this  period  the  volcanic  activity  produced  various  calk‐alkaline  ...
    ... samples were collected. The samples were oriented in situ with the magnetic and/or sun compass. The  principal aim was  to  find out  if  the studied area was  involved  in a  large scale displacement during or  after the time covered by the samples.     METHODS    The  samples were  cut  into  standard‐size  ...

  • Analysis and visualization of geophysical well-logging data from closely spaced boreholes

    Branislav Sretković, Ivana Vasiljević, Dimitry Sidorov - Biryukov (2024)
    Geophysical logging measurements for determining the condition of the rock mass on the dam profile and locating the predisposed directions of water circulation and loss from the reservoir were conducted in four boreholes distributed at a close distance. The survey was carried out in a typical karst terrain, which is an additional challenge for defining the geological model, especially in terms of water retention. That kind of data set provides an excellent opportunity for a new approach to analysis ...
    well-logging in karst, water loss, data correlation, data fusion
    ... lateral changes in the entire block of the investigation area in which four wells were drilled. This is of great importance for understanding the state of the rock mass and its karstified zones. SITE DESCRIPTION The investigation area belongs to the Dinaric-ophiolitic zone, one of the most ...
    ... HA TEPHTOPHJATA HA P. C. MAKEJIOHHJA Jby06uo Josano6, Kamepuna /{[pozpetuka TECTONIC ASPECTS OF THE CRUSTAL THICKNESS DIFFERENCE IN THE RHODOPE AREA Neven Georgiev O60pa3oBaHue BO reoHayKHTe NORTH MACEDONIAN MULTIPLE CONTRIBUTIONS TO THE RISBRIEFCASE, AS AN INNOVATIVE AND NON-CONVENTIONAL ...
    ... the Republic of North Macedonia faults dominate, along which erosion cuts the riverbed (Vasić et al., 2020) Geological structure of the research area is very complex, primarily in terms of rupture structures that appear to a large extent in such a typical karst environment. Therefore, they are ...

  • From post-disaster landslides inventory to open landslides data

    Biljana Abolmasov, Miloš Marjanović, Uroš Đurić, Jelka Krušić (2021)

  • The correlation of Upper Miocene lithostratigraphic units of the southern part of the Pannonian basin

    Filip Anđelković, Dejan Radivojević (2019)
    gornji miocen, litostratigrafske jedinice, formacije, Panonski basen
    ... Banat (Serbia), southeastern parts of Hungary (Great Hungarian Plain), as well as some parts of Croatia (Slavonian mountains and Hrvatsko zagorje area). The described lithostratigraphic units are on the level of formations and members and are characterized by their lithological concent, depositional ...
    ... Mațenco, L., & Radivojević, D., (2012). On the formation and evolution of the Pannonian Basin: constraints derived from the structure of the junction area between the Carpathians and the Dinarides. Tectonics. 31, TC6007 8. Radivojević, D., (2019). Pannonian Basin, Pannonian Basin System and Pannonian ...

  • Geology of the southern part of the Sava-Vardar zone: new constraints from the Klepa Mts.

    Dejan Prelević, Ana Mladenović, Violeta Gajić, Milena Dunčić, Blažo Boev (2024)
    Tethys closure, Scaglia Rossa, intracontinental basalts
    ... Maastrichtian in this area. Palacoecological · characteristics _ of · the planktonic foraminiferal association indicate relatively deep sedimentation (~300 m) of the studied limestones, with periodic changes in bathymetry. STRUCTURAL TECTONICS Tectonically, the investigated area belongs to the ...

  • The analysis of the geothermal energy capacity for power generation in Serbia

    Jana Stojković, Goran Marinković, Petar Papić, Mihailo Milivojević, Maja Todorović, Marina Ćuk (2013)
    Renewable Energy, Sustainability and the Environment
    ... heat may be used either for heating or for cultivation in an area exceeding 5 ha. On the basis of calculation for available heat amount, the authors concluded that geothermal water could be used either for heating or for cultivation on the area bigger than 5 ha. Milanovi} et al. [5, 6] develop geothermal ...
    ... heat may be used either for heating or for cultivation in an area exceeding 5 ha. On the basis of calculation for available heat amount, the authors concluded that geothermal water could be used either for heating or for cultivation on the area bigger than 5 ha. Milanovic et al. [5, 6] develop geothermal ...
    ... Boreholes, Geothermics, 37 (2008), 6, pp. 565-585 [18] Martinovi}, M., et al., Possibility of Electricity Production from Hydrogeothermal Resources in the Area of Surdulica Granitoid Massif (in Serbian), Proceedings, XIV Serbian Hydrogeological Symposium, Zlatibor, Serbia, 2012, pp. 203-208 [19] Martinovi} ...

  • 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
    ... middle Miocene Cerna and Timok faults of the South and Serbian Carpathians, located to the east and south-east of the study area (Fig. 1b). To the south of the study area, such low-offset strike-slip deformation was documented away from the Cerna and Timok faults, in the internal Serbian Carpathians ...
    ... May 3, 2021; accepted in revised form September 6, 2021; Associate Editor: Rastislav Vojtko) Abstract: 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 ...
    ... mountains belongs to the Ser- bo-Macedonian and Supragetic Unit of the Dacia tectonic Mega-Unit (Kräutner & Krstić 2002, 2003) and thus repre- sents a key area where the contact between these two units can be studied at the surface in their northern segments. However, the geometry and kinematics of this contact ...