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Упит dcterms_subject_txt:praćenje i upravljanje transporta

3239 items

  • Production of electricity from coal-fired power plants and accompanying CO2 emissions: comparison of EU-27 and US

    Uroš Djorgovski, Aleksandar Madžarević, Predrag Jovančić (2023)
    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 ...
    CO2, емисија, угаљ, термоелектрана, САД, ЕУ-27
    ... average: 6492 kWh/c 6000 4000 j 2000 j ——LFU-27 <——=US 0 eo w i e T T n o u 00 miuČ- O T W i m TO O ~ 0 O O a eNeon E:o:u: ' o e i e oč reeo oeezkžjjBNj“”oZi — r I eeeee e io a B e e e eoeo>o S Wwe e esA Č e!đ e RT NTe ı.I I K TTKR OT G Figure 2. Ratio of specific electricity production ...
    ... 10,0 Pa rt ic ip at io n of co al in el ec tr ic it y pr od uc ti on [% ] 0,0 -- B F.G S-O-S T.O BBB .B -00 85B85BššŠ e a 82 – I I I I I RI :N-BR:Bo-Bo-O5-Bo-o5-Bo:Bso:BOB:Oo5-50:Bo-S0:o-B5-G0:-Bo-B5o:BeB: - Q e q RRRR RRRGSKSSSGSGSGS lss Total electricity generation u Flectricity ...
    ... at io n of co al in el ec tr ic it y pr od uc ti on [% ] NE-U- .F T.E B SB- OB OB .BO""BS OB :Ba"0"| a aBšš e )0)00] 95 2855d45S E I I I 2R IR e a 88,868888B8B8aBaaBBSB BBB BSBaVBT.a s eee q a tc

  • Phase relations and physical indicators of municipal waste from old landfills in Serbia

    Dragoslav R Rakić, Irena G Basarić Ikodinović, Jovana M Janković, Tina D Đurić (2021)
    Due to certain similarities of municipal waste and soil, usually for the determination of basic parameters of physical state, laboratory and field tests which are common in geotechnical investigations are used. It is often to construct an apparatus for special purpose to perform some specific laboratory and field tests. Therefore, different values of indicators of municipal waste physical state can be found in the literature. The basic reasons should be found in different definitions and methods that researchers use ...
    municipal waste, moisture content, unit weight, specific gravity, grain size distribution, porosityGeneral Computer Science
    ... and Joseph, 1996 %% o Huat,2004 N, Skempton and Petley, 1970 ~ *.. |= Den Haan, 1997 2 JLJA j a i |s O ii . bj \'·\ FAPA! h NLR = q\ e s bO · Š L 8 1.9 i i ellk=) . 5 || a | a ||G 1.8 i E||=| ~ || | < iF 1.7 ined t freshly generated wastce 1-Gbj & aniincCIWBSIC (data for 10 citics ...
    ... of municipal waste (Fassett et al., 1994). Parameter Mark Unit Relations Unit weight Y kN/m) Y=W/V=(I+w) ·Ya Void ratio e mš/m* e= V /V, = | ___I-n Unit weight W a of solid A kN/m* E i ——— particles Vs 1-n 'Volume water v m*/m* v= V Zw.J0 content -% V Yw Volume gas a m*/m* a _&_ n_w ...
    ... 0 |Mi i Novi Sad || | ] - |1 ; (· B Ada Huja [00 ' BA 31-39% + . ' 2 IMO ; ; max. 68 % ' .. ' ;l ' ' ' _ . ' ' kx4] HNRA Č, BB ; 44 [00] ~ ILO ' [00] :-{} FIEI] ' J GwULs.m ! —— : Bu4 ı ' Z o . 5 awt6iw ? OB Bt! ' Šl LJ ' ı ' J INJ . ' ' :l s| |} RR r . , ' ' i R- ~ ~ ...

  • 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
    ... bi se, između ostalog, omogućilo praćenje stanja gornjih delova konstrukcija bunara i zona isticanja koje predstavljaju idelanu podlogu za razvoj procesa inkrustacije i biozarastanja. Manifestacije metaboličkih aktivnosti biofilmova, između ostalog, mogu da utiču i na razvoj procesa inkrustacije, ...
    ... visualization in a Web browser. BMC bioinformatics, 12 (1), 385. Onjia, A. (2007). Analitičke tehnike za određivanje i praćenje hemijskih susptanci od uticaja na koroziju. Integritet i vek konstrukcija, 7 (2), 79-82. Oren, A. (2014). The Family Rhodocyclaceae. In: Rosenberg, E., DeLong, E.F., Lory ...
    ... 2013). Takođe, prisustvo specifičnog mikrobiološkog diverziteta utiče i na hidrogeohemijske procese u ekosistemu podzemnih voda, zbog čega je mikrobiološka procena neophodna u karakterizaciji neorganskih procesa koji doprinose transportu i ispiranju hemijskih elemenata u dubljim delovima vodonosnih horizonata ...

  • Hidrogeohemija prirodnih radioaktivnih elemenata u podzemnim vodama Srbije

    Marina D. Ćuk (2018-02-23)
    Osnovni cilj doktorske disertacije predstavljao je definisanje prirodnih koncentracija (engl. background values) U, Th, i K u podzemnim vodama, i definisanje hidrogeohemijskih uslova koji utiču na distribuciju navedenih elemenata u podzemnim vodama...
    prirodni radioaktivni elementi, podzemna voda, geohemijske sredine, hidrogeohemijski uslovi, neparametarska statistička analiza, logistički model, hidrohemijsko modeliranje
    ... (K 50 %) Jasno praćenje trendova ROC krivih za 40K i β potvrđuje međusobne korelacije izdvojenih parametara, što je pokazano i prethodnim statističkim analizama. Sa visokim vrednostima senzitivnosti i spečifičnosti izdvojeni su granični kriterijum β aktivnosti >0.135 Bq/L i 40K >0.0615 Bq/L, ...
    ... cirkulacije podzemnih voda su primenjivane i u objašnjenju nastanska ležišta urana u sedimentim stenama (engl. roll- front i tabular ležišta). Osnovni koncept se ogleda u rastvaranju uraninita oksidacionim vodama u područjima prihranjivanja, transportom i taloženjem mineralnih materija u redukcionim ...
    ... podzemnim vodama i generalno poznavanje transporta katjona metala u prirodnim vodama pridobija sve veću pažnju u naučnim istraživanjima (Östhols 1994). Oksidaciono stanje elementa u vodi određuje njegovo hemijsko i biološko ponašanje, uključujući toksičnost i mobilnost elementa u životnoj sredini ...

  • Valorization of non-balanced coal reserves in Serbia for underground coal gasification

    David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić (2019)
    In the name of a better and safer energy future, it is our responsibility to focus our knowledge and activities to save on imported liquid and gas fossil fuels, as well as coal on which energy security of Serbia is based. The rationalization in the use of available energy resources certainly positively affects economy and the environment of a country. This paper indicates motivations for the application of the underground coal gasification process, as well as surface gasification for ...
    ugalj, gasifikacija, zaštita životne sredine, skladištenje, solarna
    ... the low pressure air. Instead of firing coal layer with the coke at high temperatures, a – — —- 225 – — — Product gas W j ii manifold 75 75 i 75 H ' · H I Drilling -—Q - and preparing || ' Row5 _ ć____ O—- Boreholes ! Figure 2. Plan view of the grid between boreholes [5] burned textile ...
    ... initiator (oxidant and possibly steam) from the compressor station at high temperature would be pumpećd to catalyze gasification reactions and transport the resulting gas mixture through production well. The final quality of gas — syngas depends on many influential parameters related to drilling ...
    ... t of the Energy Sector of Yugoslavia until 2020 with a Vision until 2050, Belgrade, Yugoslavia, 1997, (in Serbian) Palarski, J.. Gas and Heat Transport in the Underground Coal Gasification, Proceedings, Symposium Saarbrucken, Germany, 1996 ***. Study of the Coal Reserves on the Kostolac Basin ...

  • Understanding partitioning of deformation in highly arcuate orogenic systems: Inferences from the evolution of the Serbian Carpathians

    Nemanja Krstekanić, Liviu Matenco, Marinko Toljić, Oleg Mandić, Uroš Stojadinović, Ernst Willingshofer (2020)
    orogeneza, oroklini, višesmerna ekstenzija, transkurentna kretanja, Srpski Karpati
    ... Wetzel, A., Peytcheva, I., von Quadt, A., 2016a. Alpine thermal events in the central Serbo–Macedonian Massif (southeastern Serbia). Int. J. Earth Sci. 105, 1485–1505. Antić, M., Peytcheva, I., von Quadt, A., Kounov, A., Trivić, B., Serafimovski, T., Tasev, G., Gerdjikov, I., Wetzel, A., 2016b. ...
    ... Belgrade, Faculty of Mining and Geology, Belgrade, Serbia c Natural History Museum Vienna, Geological-Paleontological Department, Austria A R T I C L E I N F O Keywords: Orogenic building Oroclines Multi-directional extension Strike-slip Serbian Carpathians A B S T R A C T Highly curved ...
    ... 165–180. Balázs, A., Matenco, L., Magyar, I., Horváth, F., Cloetingh, S., 2016. The link between tectonics and sedimentation in back-arc basins: new genetic constraints from the analysis of the Pannonian Basin. Tectonics 35, 1526–1559. Balázs, A., Magyar, I., Matenco, L., Sztanó, O., Tőkés, L. ...

  • 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
    ... calculated by: where E i,RES[MWh] Energy content of input to the system of the ith renewable energy carrier. Qext,RES[MWh] Externally supplied heat produced from renewables, Q ext [MWh] Externally supplied heat, E i [MWh] Energy content of input to the system of energy carrier i. (3)Id = Net imports ...
    ... security · Serbia Nomenclature DH District heating GHG Greenhouse gases HP Heat pump f p Primary energy factor E i Energy content of input to the system of the ith energy carrier f p,i Primary energy factor of the ith energy carrier Q ext Externally supplied heat fp,ext Primary energy factor ...
    ... dependency pi Fraction of the ith input energy carrier/fuel in the fuel mix ( ∑ pi = 1) Id,i Import dependency of the ith energy carrier/fuel H Shannon–Wiener index FRES Share of renewable energy sources E i,RES Energy content of input to the system of the ith renewable energy carrier Qext,RES ...

  • Geoenvironmental Investigations at a Smelter Location in Bor (Serbia)

    Petar Papić, Zvonimir Milijić, Jana Stojković, Jovana Milosavljević, Maja Todorović, Marina Ćuk, Željko Kamberović (2014)

  • Hydrochemical features and their controlling factors in the Kucaj-Beljanica Massif, Serbia

    Fen Huang, Ljiljana Vasic, Xia Wu, Jianhua Cao, Saša Milanovic (2019)
    Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • Regional Slope Stability Analysis in Landslide Hazard Assessment Context, North Macedonia Example

    Miloš Marjanović, Biljana Abolmasov, Igor Peshevski, James Reeves, Irena Georgievska (2020)

  • Analysis of the exhaust emissions inventory from auxiliary mining machines

    Stevan Đenadić, Aleksandar Mirković, Jovana Mitrović, Filip Miletić, Predrag Jovančić, Dragan Ignjatović (2023)
    Open-pit coal mines are equipped with a large number of mining machines and vehicles with diesel engines. Due to common daily operation of these machines and vehicles large amounts of exhaust gases which contain numerous pollutants are emitted into the atmosphere. The demand to reduce air pollution induced the activities in developed countries to map and calculate all gases emitted by industries to formulate and select adequate preventive activities. In collaboration with machine manufacturers, emission standards for off-road machines ...
    emissions, mining, auxiliary machines

  • Business Models for Small-scale Biomass Projects Development

    Dejan Ivezić, Miodrag Gluščević, Marija Živković (2019)
    Biomass is recognized as the most promising renewable energy source in Serbia. The share of biomass in Serbian final energy consumption is over 10%, but mostly related to traditional use in stoves and ovens. One of the main obstacles for wider implementation of contemporary biomass facilities is the inexperience of consumers and stakeholders in the implementation of “innovative” business models, especially in the cases of small-scale projects. In this paper, three different business models (public utility company, energy cooperative ...
    ... in a cooperative or other legal entity, should not have preferential treatment in the public procurement procedure. However, it is well known that transport costs have significant share in the price of biomass, and from that point of view, local biomass producers would be in a better position. Energy ...

  • Application of the Fuzzy Model in the Evaluation and Selection of Hydraulic Excavators on Open-Pit Lignite Mine

    Stevan Đenadić, Miloš Tanasijević, Vladimir Milisavljević, Dragan Ignjatović, Predrag Jovančić (2021)
    The production of lignite in large open-pit mines is mainly performed with continuously operating equipment, where bucket-wheel excavators, bucket-chain excavators, belt conveyors, and spreaders are the basic machines. Smaller machines, usually of discontinuous operating nature, are commonly categorized as auxiliary machines. This paper presents the research related to the analysis of auxiliary machine parameters with the case study for a hydraulic excavator. The purpose of the analysis was to develop a model of rating quality of service of the ...
    Fuzzy theory, hydraulic excavator, selection, quality of service, asset management

  • 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

  • Determining the Availability of Continuous Systems at Open Pits Applying Fuzzy Logic

    Miljan Gomilanović, Miloš Tanasijević, Saša Stepanović (2022)
    This work presents a model for determining the availability of continuous systems at open pits by applying fuzzy logic and fuzzy inference systems. The applied model was formed by the synthesis of independent partial indicators of availability. The model is based on an expert system for assessing the availability of continuous mining systems. The availability of the system, as a complex state parameter, is decomposed into the partial indicators, reliability, and convenience of maintenance, and the fuzzy compositions, used ...
    системи, континуални систем експоатације, површински коп, рударство, расположивост, фази логика, max–min композиција, min–max композиција

  • Towards a Mining Equipment Ontology

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... MIT Press, 2003. [8] Obradović, I., Ignjatović, D., Stanković, R., Ivković, Lj.: Ocena stanja bagera i njihovo višetratibutno rangiranje u cilju revitalizacije. In: Proceedings of the MAREN 2006, Međunarodni simpozijum Mehanizacija i automatizacija u rudarstvu i energetika, zbornik radova, Beograd ...
    ... Besides data on the equipment the class Oprema is used for modeling data on production systems, e.g. Excavator-Conveyer-Spreader (ECS) systems or transport systems. The relation between a specific system and the equipment that belongs to it is modeled by the class OpremaUSistemu. The model also supports ...
    ... http://dr.rgf.bg.ac.rs/s/repo/item/0001460 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених доступним у слободном приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University ...

  • Geotechnical zoning of the terrain along the first section of E-80 highway in Serbia – SEETO route 7

    Dragoslav Rakić, Zoran Berisavljević, Irena Basarić, Snežana Bogdanović, Jovana Janković (2019)
    Part of E-80 highway that passes through Serbia (from the city of Nis to the administrative border Merdare) is 77 km long. The highway is divided into two sections: the first from Nis to Plocnik (39.4 km long) and the second from Plocnik to the administrative border with Kosovo. The route is designed through a typical plain and hilly terrain in which different geological units are dominant: crystalline schists, neogene sediments of foothills and quaternary sediments in the valley ...
    ... 1 INTRODUCTION The highway E-80 (SEETO route 7), represents the traffic intersection of the Western Balkan and is part of the main regional transport network in Southeast Europe. Total length of the route is 77 km, and it is divided into two sections: the first one, 39.4 km long (ends at the ...
    ... http://dr.rgf.bg.ac.rs/s/repo/item/0005747 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених доступним у слободном приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University ...
    ... route of regional road Nis – Kursumlija, which will represent one traffic lane of new highway. It is divided into two characteristic zones: Zone I - consists of alluvial-terraced or alluvial-proluvial sediments in the surface zone, and Zone II - consists of deluvial-proluvial sediments in the ...

  • Pre-failure deformation monitoring as rockfall prediction tool

    Miloš Marjanović, Biljana Abolmasov, Zoran Berisavljević, Marko Pejić, Petko Vranić (2021)
    General Engineering
    ... center of the instrument. In addition to X,Y,Z and reflection intensity (I) information, it is possible to extract color information of each point. This scanner has such features, so each point in the cloud is provided with X,Y,Z,I,R,G,B information, but R,G,B values can be also collected by using external ...
    ... thicker coarse to conglomeratic sandstone, alternating with a thin laminated marly siltstone, while claystone is likely lost in the sediment transport or missing for other reasons. Tectonics is not particularly pronounced at the site or in its vicinity, the formation has moderately gentle bedding ...
    ... http://dr.rgf.bg.ac.rs/s/repo/item/0005680 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду омогућава приступ издањима Факултета и радовима запослених доступним у слободном приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University ...

  • Towards Better Valorisation of Industrial Minerals andRocks in Serbia—Case Study of Industrial Clays

    Vladimir Simić, Dragana Životić, Zoran Miladinović (2021)
    Management, Monitoring, Policy and Law,Nature and Landscape Conservation
    ... micaceous sandstone Savića Mala K, I, (IS?) Refractory Dacite-andesite Rudovci K Resources 2021, 10, 63 4 of 18 Refractory and ceramic Dacite-andesite and schists Baroševac K, I Ceramic Sericite-chlorite schist and metaclastic rocks Kruševica, Dren K, I Ceramic Mica schist and ...
    ... Serbia. K—kaolinite, I—illite, S—smectite, IS—interstratified illite-smectite. Industrial Type of Clay Parent Rock Deposit Typical Clay Minerals Refractory (carbonaceous) Granite Lazine K Ceramic and refractory Granite Ćirinac, Bukovik K Ceramic Granite Krušik K, I, S Refractory and ceramic ...
    ... bentonite of small thickness, mostly medium or poor quality of raw materials, and underground method of exploitation (Table 3). In addition, high transport costs prevent potential exports, and domestic utilisation is impossible without bentonite processing plants and related industry that would use the ...

  • Review: Methodological approaches and research techniques for addressing construction and remediation problems in karst reservoirs

    Saša Milanović, Ljiljana Vasić (2021)
    Earth and Planetary Sciences (miscellaneous), Water Science and Technology