Претрага

Упит dcterms_subject_txt:the Kamenička River

281 items

  • State and perspective of individual household heating in Serbia: A survey-based study

    Boban Pavlović, Dejan Ivezić, Marija Živković (2021)
    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 ...
    Domaćinstva, Individualni sistemi grejanja, Korišćenje energije, Stavovi potrošača, Anketa, Srbija

  • 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
    ... elements of the sludge line for a capacity of 126,000 PE. Digesters for the treatment of sludge and biogas production facilities are under construction. Currently, approx. 60,000 inhabitants are connected to the existing plant. Data on average monthly temperature of treated water and river Sava (recipient) ...
    ... Temperature of treated water and river Sava (recipient), (°C) Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Treated water 11.1 11.3 14.1 15.9 18.8 22.2 23.8 24.2 21.8 19.7 15.8 12.2 Sava 3.1 3.9 6.9 11.2 15.8 19.8 22.5 23 18.9 13.8 8.6 4.8 Fig. 5 The heat load duration curve of DH system ...
    ... acting on the demand and supply sides. In the previous period, much attention was paid to the demand side, by retrofitting the building stock, but lately, the supply side has received more attention in the EU (European Com- mission 2016). Actions on the supply side should be directed to the decarbonization ...

  • The Importance of Detailed Groundwater Monitoring for Underground Structure in Karst (Case Study: HPP Pirot, Southeastern Serbia)

    Marina Čokorilo Ilić, Ana Mladenović, Marina Ćuk, Igor Jemcov (2019)
    Geography, Planning and Development,Aquatic Science,Biochemistry,Water Science and Technology
    ... days A During the campaign, the monitoring program included all springs (Berilovac, Izvor, Dag Banjica, Glame, Dobri Do and Nišor), the observation wells along the tunnel (PP-1, PP-3 and PP-4), a surface water reservoir and the Dobrodolska River. Monitoring within the tunnel and at the control gate was ...
    ... PP-3) while the tunnel was online, when both the tunnel and the hydrogeologic environment were under the influence of the pressure of the transported water (Figure 5). In the full operating mode of the HPP (4–5 h/day), at PP-3 the transport of water relieved the pressure not only in the tunnel but within ...
    ... relative to the water level of the reservoir, with a difference of 3.18 m when the tunnel was completely empty. The rate of inflow into Section II was up to 9 L/s and the groundwater level was generally about 11 m higher than the water level of the reservoir when the tunnel was online. The difference ...

  • Uticaj proširenja nuklearne elektrane “Pakš” (Mađarska) na resurse podzemnih voda u Vojvodini

    Bojan Hajdin, Dušan Polomčić (2016)
    ... ENLARGEMENT OF THE NUCLEAR POWER PLANT „PAKS“ (HUNGARY) ON GROUNDWATER RESOURCES IN VOJVODINA The current decision of the neighbouring Republic of Hungary to enlarge the capacities of the existing nuclear power plant „Paks“, located on the Danube river, by two new reactors, poses a significant issue which ...
    ... aspects of the impact of such a decision on the enviroment in the given region due to the proximity to the territory of the Republic of Serbia. The paper is concerned with the impact of the future nuclear complex's functioning on groundwater resources in Vojvodina, based on experience in the area of ...
    ... reserve formation in the region of the Pannonian Basin, its utilization and protection. Furthermore, an impact assessment has been given, relative to the strategic solution for future water supply system of the northern and north-western Bačka region, according to which the construction of a groundwater ...

  • A Fuzzy Expert Model for Availability Evaluation

    Dejan Ivezić, Miloš Tanasijević, Predrag Jovančić, Radiša Đurić (2019)
    Each technical system within itself carries the great potential danger of possible occurrence of failure and damages. Mining machines are characteristic by great investment values, costs of unplanned shutdowns, complex working conditions, and environment and workers hazards. Systematic monitoring of the mining machinery is of great importance for the management of the mining companies. Availability is the overall concept of quality of service. Includes information regard to operating state, an idle state, a standby state and shut down. The ...
    raspoloživost, ekspertski sistem, fazi teorija, buldozeri
    ... influence on the dependability and the quality of service due to the known fact that the machine must be primarily available for operation in order to obtain performance. The achievement of the satisfactory value of the machine's availability in the operation depends largely on the appropriate ...
    ... that gives the probability that the system will work during a selected period of time [1]. Availability is a measure of the state of the system in terms of its efficiency to start operation and to obtain outputs in the required range. The required range is set as the function of the criteria, for ...
    ... bulldozers - for each year and the average [9]. Obtained results coincides with the result obtained by the expert model. The bulldozer with the higher availability in Table II is the bulldozer evaluated mostly as “excellent” and “good”, while the bulldozer with the lowest availability in Table 2 ...

  • Advantages and Disadvantages of a Parallel and Zigzag Method of Acquisition in Walking Mode in Magnetometric Archeological Research

    Mirko Petković, Vesna Cvetkov, Branislav Sretenović (2014)
    магнетометријска испитивања, цик-цак и паралелна аквизиција у ходајућем моду, линеарне аномалије, археологија
    ... cs, New York: Oxford University Press. McCullough, R. 2007 Geophysical survey and limited test exvatinos to locate the Hargrove Cemetery on a land par- cel in the Patoka River National Wildlife Refuge and management Area near Oakland City, Gibson Country, Indiana, Ph.D Tessis, Indiana University ...
    ... research resolve the problem of the zigzag method of acquisition by using the instrument’s software. Before the start of the acquisition process, the operator sets the direction and the method of acquisition. The in- strument’s software then prepares the data col- lected in the zigzag method for ...
    ... During the acquisitions of the three modes, traverses were oriented along a north-south direc- tion. In the fi rst case, the operator, at the end of the profi le, made a semicircle and continued the measurement on the next adjacent profi le in a zig- zag fashion. Throughout the acquisition, the data ...

  • Održivo korišćenje mađarsko-srpskih međugraničnih vodnih tela

    Dušan Polomčić, Zoran Stevanović, Saša Milanović, Stanko Sorajić, Bojan Hajdin, Željko Kljajić (2010)
    ... drinking purpose. The results of the conducted hydrogeological survey, measurements and modelling show insignificant depletion of the groundwater table, without expansion tendency for the forecasted period of the next 20 years and for the simulated extraction rates, which should remain the same or it might ...
    ... drinking purpose. The results of the conducted hydrogeological survey, measurements and modelling show insignificant depletion of the groundwater table, without expansion tendency for the forecasted period of the next 20 years and for the simulated extraction rates, which should remain the same or it might ...
    ... implemented. One of the good examples is the “Sustainable development of Hungarian – Serbian transboundary aquifer (SUDEHSTRA)”. Groundwater resources within thick Tertiary aquifer layers deposited between the Danube and Tisa Rivers are vital for the economy and the society of the two countries, c ...

  • Strategic Environmental Assessment in the Application of Preventive Protection for Wind Farm Noise—Case Study: Maestrale Ring Wind Farm

    Boško D. Josimović, Aleksandar Cvjetić, Božidar Manić (2021)
    Determining the spatial position of wind turbines is the initial and most important phase in the development of a wind farm project. In this sensitive phase, all potential problems that may arise in the later stages of project development should be prevented by means of spatial and urban planning instruments. This makes it possible to achieve maximum use of the potential of wind in a particular space and, thus, fulfil the technical and economic requirements of the project while ...
    Energija,energetski inženjering i elektroenergetska tehnologija,obnovljivi izvori energije, održivost i životna sredina,električni i elektronski inženjering,kontrola i optimizacija,inženjering
    ... formulating the objectives and indicators for assessing the impact of noise from the planned Maestrale Ring wind farm (Table 1), the following were taken into ac- count: the “zero” condition of the noise values at the measuring point (Within the national environmental monitoring network) in the Čantavir ...
    ... The task of the SEA process for the Maestrale Ring project was to assess the signifi- cance of the impact of wind farms on the environment: biodiversity, air, water, land, cli- mate change, landscape, cultural heritage, non-ionizing radiation, noise (which is the fo- cus of this work), the effect ...
    ... relation to the defined SEA objectives and indicators, using on the 4 groups of criteria from Table 2. For the expert assessment of the noise impact from the planned Maestrale Ring wind farm, the results were used from a partial assessment based on modeling the spatial dis- persion of the noise. Noise ...

  • Aлтерације перидотита контролисане карактером флуида на примеру харцбургита Рудника - Серпентинизација или талкизација?

    Стефан Петровић, Наталија Батоћанин (2020)
    У раду су приказани резултати испитивања серпентинисаних харцбургита Брђана (43°58'45.1" СГШ, 20°25'12.6" ИГД) и талкизираних харцбургита откривених у интервалу 429-559.8 m у истражној бушотини 330А/18 (44°07'33.2" СГШ, 20°30'28.5" ИГД) на Руднику. Узорци оба локалитета показују карактеристике резидуалних харцбургита из омотача, односно тектонита; лепидобластичне, бластозрнасте, или порфирокластичне структуре и масивне текстуре. Серпентинисани харцбургити и серпентинити Брђана су изграђени од серпентина, ретких реликата оливина и ортопироксена, акцесорног спинела, и веома ретког секундарног магнезита и магнетита. Најдоминантнији састојак (местимично гради и преко ...
    Рудник, Брђани, харцбургити, серпентинити, талк
    ... Huge masses of serpentinites and serpentinized peridotites occur on both sides of the river Despotovica, being transgressively overlying by Middle Miocene sedimentary- volcanogenic series. The studied rocks are parts of the Maljen and Suvobor massifs, which are dominantly built by harzburgites. Lherzolite ...
    ... discusses results from both the field and the laboratory investigations. During field work representative samples were taken. Four samples were taken from the drilled borehole from Rudnik (interval 480-498 m) and two samples were taken from the surface in the locality Brđani. The laboratory examinations ...
    ... VELDE, 1988). The same authors determined that the mineral assemblage: talc + forsterite (which remained unaltered) is stable at least at 490 °C. The action of lower-temperature fluids (below 470 °C) would cause the alteration of olivine, too. Thus the serpentine would form along with the talc following ...

  • Hydrogeochemical distribution of Ca and Mg in groundwater in Serbia

    Petar Papić, Jovana Milosavljević, Marina Ćuk, Rastko Petrović (2014)

  • Mineral and Thermal Waters of Serbia: Multivariate Statistical Approach to Hydrochemical Characterization

    Maja Todorović, Jana Štrbački, Marina Ćuk, Jakov Andrijašević, Jovana Šišović, Petar Papić (2016)

  • Synthesis and characterization of high-pressure and high-temperature sphene (CaTiSiO5)

    Jelena Pantić, Vladimir Urbanovich, Vesna Poharc-Logar, Bojan Jokić, Marija Stojmenović, Aleksandar Kremenović, Branko Matović (2014)
    Sphene (CaTiSiO5), a calcium titanosilicate ceramic has been prepared from a powder mixture of CaCO3, TiO2 and SiO2 using vibro-milling for homogenization and activation of precursors. During the highpressure and high-temperature synthesis (HPS) process at 4 GPa and 1,200 °C, sphene undergoes into phase transition, from room-temperature phase P21/a to high-temperature phase A2/a. Evidence of that structural phase transition is given in this paper using infrared, Raman spectroscopy and X-ray powder diffraction. Rietveld refinement was employed to get the ...
    Sphene, Phase transition, Raman spectroscopy, X-ray diffraction, SEM, IR

  • Mineralogical analysis of a clay body from Zlakusa, Serbia, used in the manufacture of traditional pottery

    Maja Milošević, Biljana Đorđević, Mihovil Logar (2020)
    калцит, сирова глина, традиционална керамика, Злакуса
    ... identifying the proven- ance of archaeological ceramics. Locality and material The village of Zlakusa (43%47"N, 19%.57E, elevation 400–-931 m) is located on the slopes of Drežnik Hill, along the right-hand bank of Djetinja River, western Serbia. It belongs to the district of Zlatibor in the territory ...
    ... als. Based on the abundance of the minerals present and their association, there is a wide variety of properties that promote the application of the CIMx in the manufacture of ceramic pro- ducts (Christidis, ; Abdelmalek et al, ). The XRPD traces of the oriented clay fractions of the investigated ...
    ... and are products of the potters themselves. After that, the calcite is sieved and added to the clay body in a clay:calcite ratio of 1:1 or 0.4:0.6, depending on the type or the size of the vessel to be made. For example, for larger pots, such as celebration or wedding pots, the recipe involves 60% ...

  • Geotehnički uslovi izgradnje nadvožnjaka "Balajnac" na autoputu E-80 deonica: Niš - Merošina

    Dragoslav Rakić, Nikola Božović (2024)
    U sklopu prve deonice autoputa E-80 Niš – Merošina, izgrađen je nadvožnjak u zoni sela Balajnac koji je oslonjen na tri stubna mesta na međusobnom rastojanju od oko 26 m. Svaki stub je fundiran na šipovima i to sa predloženim rasporedom od 2 šipa u grupi na međusobnom rastojanju od 3.6 m. U radu su na osnovu izvršenih geotehničkih istraživanja terena, analizirani rezultati nosivosti vertikalno opterećenog šipa prečnika 1.2 m i dužine šipa od L = 23 m. Analiza ...
    nadvožnjak Balajnac, šip, probno opterećenje šipa, projektni pristup, granična stanja

  • Петрологија црвених пешчара источне Србијe

    Андреј Марковић (2024)
    У источној Србији формација црвених пешчара има велико распрострањење и улази у састав многих планина овог дела наше земље. Формацију чине кластичне стене интензивно црвене боје псамитске, ређе псамитско-псефитске структуре и алевритске структуре. Ове стене леже трансгресивно преко старијих пермо-карбонских и карбонских стена, док навише прелазе у доњотријаске седименте. Формација црвених пешчара захвата два појаса унутар Карпато-балканида – унутрашњи и средишњи део. Узорци анализирани у овом раду део су средишњег појаса. Тема завршног рада је петрологија црвених пешчара источне ...
    источна Србија, црвени пешчар, петролошко-минералошке карактеристике, аркозе
    ... Serbia, more specifically samples from the area around Grza River near Paraćin. After macroscopic determination, optical and chemical analysis were applied. According to structural and petrological-mineralogical parameters, analyzed sandstones are defined as siltstone sandstones-arkoses. They are ...
    ... Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade 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 YnuuBep3urer ...
    ... rocks while upwards they pass into the Lower Triassic sediments. Red sandstone formation covers two belts inside Carpatho-Balkanides — inner and central part. Samples analyzed in this paper are part of the centre belt. Subject of the final paper is petrology of the red sandstones of Eastern Serbia ...

  • Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling

    Branislav Petrović, Veljko Marinović, Zoran Stevanović (2023)
    Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • Lamprofiri Kolaričke reke (Boranja)

    Luka Jović (2024)
    Lamprofiri su grupa egzotičnih ultrakalijskih stena poznatih po sadrţaju nekompatibilnih elemenata i elemenata retkih zemalja. U našem delu sveta pojavljuju se u okviru ultrakalijskih provincija u Španiji, Italiji, Srbiji, Makedoniji i Turskoj. U Srbiji su zastupljeni ponajviše u zapadnim delovima zemlje, oko opština Ljubovija i Mali Zvornik, ali i u široj okolini Rudnika, Kopaonika i u istočnoj Srbiji. Mnoga ispitivanja sprovedena su u rudnom polju Veliki Majdan u zapadnoj Srbiji sa čije jugoistočne strane protiče Kolarička reka. Ovaj lokalitet ...
    geohemija, lamprofiri, ultrakalijski magmatizam, elementi retkih zemalja, mešanje magmi, mineta, kersantit, flogopit
    ... in the western regions, with occurrences also documented in central and eastern parts of the country. A significant body of research has been conducted around the polymetallic deposit at Veliki Majdan, located on the southeastern margin of the Kolarička river. This locality is part of the Cenozoic ...
    ... volcanic province of western Serbia, which dates from the Oligomiocene to ecarly Miocene. Here, lamprophyres are present as numerous dikes and other small intrusive bodies. In this study, three samples of lamprophyre were collected from the Kolarička river valley and analyzed using a combination of optical ...
    ... Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade 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 Univerzitet ...

  • Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду

    главни и одговорни уредник Душан Поломчић (2016)
    Рударско-геолошки факултет
    ... Danube Countries in the Frame of the International Programme of UNESCO, pp. 1–64. PROHASKA S. ET AL., 2006: Basin-Wide Water Balance in the Danube River Basin, The Danube and its Basin – Hydrological Monograph Follow – up Volume VIII. Regional Co-operation of the Danube Countries in the Frame of International ...
    ... S., ISAILOVIĆ D., SRNA P., MARČETIĆ I., 2000: The Danube and its Basin - A Hydrological Monograph Follow-up volume IV, Coincidence of Flood Flow of the Danube River and its Tributaries. Regional Co-operation of the Danube Countries in the Frame of the International Hydrological Programme of UNESCO ...
    ... Damage on the River Danube Caused by the HPP “Djerdap 1“ Backwater. Water Science and Technology, 70 (2), 376–385. IWA Publishing. DOI: 10.2166/wst.2014.230. POLOMČIĆ D., BAJIĆ D., ZARIĆ J., 2015: Determining the Groundwater Balance and Radius of Influence Using Hydrodynamic Modeling: the Case Study ...

  • Classification of mining waste landfills according to legislation in Serbia

    Dragana Nišić, Uroš Pantelić, Nikoleta Aleksić, Neda Nišić (2021)
    rudarski otpad, jalovina, uredba, deponija, kategorija A, klasifikacija
    ... Mount, B. J, Asunskis, D. J, Jordan, B. T., Barker, R. J, Santos, E. E. and Schaefer, C.E.G, Post-catastrophe analysis of the Fundão Tailings dam failure in the Doce River sy- stem, Southeast Brazil: potentially toxic elements in affected soils. Water, Air, & Soil Pollution, vol. 228, no. 7, ...
    ... classify the landfill in the proposed category A. Starting from this issue, this paper explains in detail all the pro- visions of the Bylaw dealing with the terms of classification. It is determined that the landfill is cla- ssified based on the possibility of a potential failure and the character ...
    ... adopting the Bylaw on the conditions and procedure for issuing waste management permits, as well as criteria, characteri- zation, classification and reporting on mining waste in 2017. As the implementation of the Bylaw began in 2020, there are still frequent doubts during the interpretation of the criteria ...

  • Geochemical evaluation of dolostone deposits in Montenegro: Implications for potential industrial applications

    Darko Bozovic, Vladimir Simic, Dragan Radulovic, Slobodan Radusinovic, Vesna Matovic, Anja Terzic (2024)
    This study presents a unique model for assessing the dependability of continuous parts of combined systems in open-pit mining through the application of fuzzy logic. Continuous sub-systems as part of the combined system of coal exploitation in surface mines have the basic function of ensuring safe operation, high capacity with high reliability, and low costs. These subsystems are usually part of the thermal power plant’s coal supply system and ensure stable fuel supply. The model integrates various independent partial ...
    примарне сировине, минералогија, физичко-механичка својства, технолошка својства, наука о материјалима