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119 items
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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 ...Jelena Pantić, Vladimir Urbanovich, Vesna Poharc-Logar, Bojan Jokić, Marija Stojmenović, Aleksandar Kremenović, Branko Matović. "Synthesis and characterization of high-pressure and high-temperature sphene (CaTiSiO5)" in Physics and Chemistry of Minerals, Springer Science and Business Media LLC (2014). https://doi.org/10.1007/s00269-014-0693-x
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Sustainable Modularity Approach to Facilities Development Based on Geothermal Energy Potential
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... data for calculations, a geological/hydrogeological re- connaissance was carried out, followed by groundwater parameters regime monitoring (temperature, chemical composition, flow capacity). For the purpose of geothermal wa- ter and reservoir characterization, the D’Amore method and diagram was applied ...
... emission per person 80 W/pers • Metabolic heat emission per m2 2.7 W/m2 • Dissipated heat from appliances 30 W/m2 • Fresh air flow per surface area 1 (m3/h)/m2 • Fresh air flow per person 30 (m3/h)/pers • Heat gain utilization factor for the heating period ηH,gn = 0.9 (value for lightweight con- struction) ...
... component is key not only for energy efficiency but also for thermal comfort throughout the year, so the exact sun exposure and anticipated occupancy regime of particular facility should be specified on a case-by- case basis. 3. The materialization of opaque components reflects on the overall energy p ...Nataša Čuković-Ignjatović, Ana Vranješ, Dušan Ignjatović, Dejan Milenić, Olivera Krunić. "Sustainable Modularity Approach to Facilities Development Based on Geothermal Energy Potential" in Applied Sciences-Basel, МDPI (2021). https://doi.org/10.3390/app11062691
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Structural and geochronological constraints from the Drina-Ivanjica thrust sheet (Western Serbia): implications for the Cretaceous–Paleogene tectonics of the Internal Dinarides
Kristof Porkoláb, Szilvia Kövér, Zsolt Benkó, Gabor Héja, Melinda Fialowski, Balázs Soós, Nataša Gerzina Spajić, Nevenka Đerić, László Fodor (2019)Internal Dinarides, Drina-Ivanjica thrust sheet, Deformation history, K–Ar dating, Obduction, Structural analysis... Southern Triassic TsT „ Southem Triassic T, |D Northem Triassic T,-T, [B2 Dina-Ivanjica Paleozoic D4 orogen-parallel extension D3 strike-slip regime up:31320/0! |Ang:161 14 JPhi: 0,456 • Požega || 7 10km The coordinates are in Gauss-Kruger pmš'eclion system Zone 7, Croatian/Serbian ...
... and the trend of map-scale structures both imply roughly N-S compression, and sub- ordinate perpendicular extension (Fig.5). Though the stress regime changed from pure compression of D» to transpression of Dx, the shortening directions of the tWo phases do not differ significantly from each other ...
... to interpret due to the lack of any other samples showing similar ages. A probable solution is that this datum represents deformation or fluid flow-induced crystallization of some very-fine- grained white micas during the predominantly brittle D> deformation phase. 5.5 Origin of the Southern ...Kristof Porkoláb, Szilvia Kövér, Zsolt Benkó, Gabor Héja, Melinda Fialowski, Balázs Soós, Nataša Gerzina Spajić, Nevenka Đerić, László Fodor. "Structural and geochronological constraints from the Drina-Ivanjica thrust sheet (Western Serbia): implications for the Cretaceous–Paleogene tectonics of the Internal Dinarides" in Swiss Journal of Geosciences (2019)
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Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)
... maximum of b, fold axes suggests that both structures are related to the same deformation stage (D»). Later rotation of blocks in the brittle regime has caused further dispersion in the orien- tation of b, fold axes. Crenulation cleavage Sy intersects foliation S, at high angles and is generally ...
... formed during D were probably disturbed further during the subsequent events involving magmatic intrusions and block rotations in the brittle regime. The majority of the observed kinematic indicators in central SMM suggest south-eastward direction of tectonic transport (Fig. 6). This transport ...
... the observed scat- ter in the orientation of stretching lineation and shear sense indicators could be a result of block rotation in the brittle regime during the Alpine orogeny, which had considerably 1683 reshaped this area (Antić et al. 2015a). Additionally, the rheological contrast between ...Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Richard Spikings, Andreas Wetzel. "Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)" in International Journal of Earth Sciences, Springer Science and Business Media LLC (2016). https://doi.org/10.1007/s00531-016-1380-6
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Insights into dike nucleation and eruption dynamics from high-resolution seismic imaging of magmatic system at the East Pacific Rise
Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Mladen R. Nedimović, Juan Pablo Canales, Hélène D. Carton, John C. Mutter, Javier Escartín (2023)Milena Marjanović, Suzanne M. Carbotte, Alexandre Stopin, Satish C. Singh, René-Édouard Plessix, Miloš Marjanović, Mladen R. Nedimović, Juan Pablo Canales, Hélène D. Carton, John C. Mutter, Javier Escartín. "Insights into dike nucleation and eruption dynamics from high-resolution seismic imaging of magmatic system at the East Pacific Rise" in Science Advances, American Association for the Advancement of Science (AAAS) (2023). https://doi.org/10.1126/sciadv.adi2698
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Alpine thermal events in the central Serbo-Macedonian Massif (southeastern Serbia)
Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Andreas Wetzel, Irena Peytcheva, Albrecht von Quadt (2015)Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Andreas Wetzel, Irena Peytcheva, Albrecht von Quadt. "Alpine thermal events in the central Serbo-Macedonian Massif (southeastern Serbia)" in International Journal of Earth Sciences, Springer Science and Business Media LLC (2015). https://doi.org/10.1007/s00531-015-1266-z
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Definition of Circulation Conditions and Groundwater Genesis of the Complex Krupaja Hydrogeological Karst System (Eastern Serbia)
Management, Monitoring, Policy and Law,Renewable Energy, Sustainability and the Environment, Geography, Planning and Development, Building and Construction... thermal spring.. Dissolved oxygen is the highest at Krupaja Spring, during, the spring period (10.26 mg/L), which is a consequence of the turbulent regime and infiltration of fresh water into the system. Oxygen decreases with depth, so in the well, the values vary from 4.3 to 7.45 mg/L, while the ...
... Krupaja system phenomena (Krupaja Spring, thermal spring, and borehole B-1). Borehole B-1 log according, to video-endoscopy, thermal logging, and flow meter logging, data. For the purpose of defining, the genesis and water circulation conditions of the two karst springs and the borehole within ...
... to over 31 mž/s. The second spring, of the investigated system involved thermal groundwater that is only 7–8 m away from the borehole and has a flow rate of 2–2.5 L/s, while subthermal water drains from borehole B-1 and has a constant discharge rate of 5 L/s. Water temperatures are uniform and ...Ljiljana Vasić, Saša Milanović, Tina Dašić. "Definition of Circulation Conditions and Groundwater Genesis of the Complex Krupaja Hydrogeological Karst System (Eastern Serbia)" in Sustainability, MDPI AG (2023). https://doi.org/10.3390/su151411146
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Centar za hidrogeologiju karsta - 15 godina nauke i struke
... calculations, simulations and predictions of karst spring flow, application of hydrological models in karst, statistical methods in hydrogeology, regression and correlation analyses in karst hydrogeology, analyses of karst spring flow regime and balance of groundwater n karst terrains. Also, the area ...
... impeller) for flow measurement type SEBA (Seba Hydrometrie Z6) for quantities from a few tens to several thousand 1/s. Recently, the CKH has been practicing the installation of digital flow meters (the Stingray flow meter) as a reliable and very precise procedure with a step of flow measurement of ...
... water in karst and become familiar ' with the characterization and conceptual definition of karst aquifers in order to artificially regulate the regime of karst groundwater and create the preconditions for its stable and reliable use for industrial and domestic water supply. • Evolution of karstology ...urednici Saša Milanović, Ljiljana Vasić, Zoran Stevanović, Branislav Petrović. Centar za hidrogeologiju karsta - 15 godina nauke i struke, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet, Centar za hidrogeologiju karsta, 2023
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Hyperpycnites within the Devonian-Carboniferous flysch of the Carpatho-Balkanides (Kostadinovica, eastern Serbia)
Miloš Radonjić (2020)This study presents new discoveries of vascular plants and the trace fossil Dictyodora liebeana (GEINITZ) from the Devonian–Carboniferous Kučaj-Zvonce flysch of the Carpatho-Balkanides and the implications of this fossil association for its sedimentary setting. The occurrence of the described plant debris in a deep-marine environment indicates the presence of hyperpycnites within the siliciclastic turbidites exposed at the Kostadinovica locality. The sedimentological data and the characteristics of the fossil material support the proposed model in which the sediment was at ...Mississippian flora, Dictyodora liebeana (GEINITZ), hyperpycnites, Kučaj-Zvonce flysch, Carpatho-Balkanides... fac- tor common to the aforementioned occurrences and the Kostadi- novica section is the transport of the plant material under the tur- biditic flow regime. The presented samples from the Kostadinovica site are the first discoveries of the Early Carboniferous flora from Serbia. Previous palaeobotanical ...
... by turbulent flow on the bottom of the current (bedload - facies B), (2) deposition of the sediment suspended in the flow during its deceleration (suspended load - facies S) and (3) deposition of fine-grained sediment under the density reversal of the hyperpy- cnal flow when its flow capacity decreases ...
... longer axis of fragments is generally chaotic. In some cases when the direction of the flow within a bed could be inferred by sedimentary structures, plant fragments show apparent directiona- lity perpendicular to the flow. The majority of fragments show signs of intense flattening normal to the bedding ...Miloš Radonjić. "Hyperpycnites within the Devonian-Carboniferous flysch of the Carpatho-Balkanides (Kostadinovica, eastern Serbia)" in Geologia Croatica, Croatian Geological Survey (2020). https://doi.org/10.4154/gc.2020.13
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Assessments of effects of implementation of strategic plans for development of Belgrade District heating system
The district heating system (DHS) is one of the key elements of the Belgrade energy system. Overview of the current state and basic characteristics of the DHS are presented in this paper. The focus is on the planned development of DHS and on the analyses of effects of realization of measures and projects defined by strategic documents related to DHS which are adopted by city authorities (Development Strategy of DHS and Strategy of Belgrade Development). Two exploratory scenarios were ...Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Miodrag Grujić. "Assessments of effects of implementation of strategic plans for development of Belgrade District heating system" in Sustainable Cities and Society, Elsevier BV (2020). https://doi.org/10.1016/j.scs.2020.102304
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Analogue modelling of strain partitioning along a curved strike-slip fault system during backarc-convex orocline formation: Implications for the Cerna-Timok fault system of the Carpatho-Balkanides
Nemanja Krstekanić, Ernst Willingshofer, Taco Broerse, Liviu Matenco, Marinko Toljić, Uroš Stojadinović (2021)... of splay faults in the brittle layer as an expression of flow in the underlying viscous layer that also affects areas on the adjacent fixed sheet (see Figs. 2c, 7 and 9c). We suggest that this flow generates a transtensional deformation regime leading to minor thinning of the viscous layer and subsidence ...
... basin opening. d) Added effects of flow in the viscous layer compared to brittle only rheology as in Fig. 9c. Viscous layer distributes deformation in a larger area and facilitates transfer of deformation around indenters corners. Grey arrow indicates direction of flow in the viscous layer. White arrow ...
... frontal to the lateral indenter margin (e.g., Marshak, 1988; Cres- po-Blanc and González-Sánchez, 2005; Luth et al., 2013). The change in deformation regime around the indenter is also associated with a decrease in topography from the contractional to the strike-slip domain, which is gradual in case of ...Nemanja Krstekanić, Ernst Willingshofer, Taco Broerse, Liviu Matenco, Marinko Toljić, Uroš Stojadinović. "Analogue modelling of strain partitioning along a curved strike-slip fault system during backarc-convex orocline formation: Implications for the Cerna-Timok fault system of the Carpatho-Balkanides" in Journal of Structural Geology, Elsevier BV (2021). https://doi.org/10.1016/j.jsg.2021.104386
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Towards Better Valorisation of Industrial Minerals andRocks in Serbia—Case Study of Industrial Clays
... private companies. Geological exploration and min- ing are under jurisdiction of the Ministry of Mining and Energy and the mineral resources permitting regime is a mixed one, although predominantly based on a one-stop-shop, as Citation: Simić, V.; Životić, D.; Miladinović, Z. Towards Better Valorisation ...Vladimir Simić, Dragana Životić, Zoran Miladinović. "Towards Better Valorisation of Industrial Minerals andRocks in Serbia—Case Study of Industrial Clays" in Resources, MDPI AG (2021). https://doi.org/10.3390/resources10060063
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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... deference (t lift ) between treated wastewater and supply water in DH. Higher-temperature difference corresponds to lower values of COP. The heating regime in Serbian district heating systems is 90/70C, so temperature at the exit of the heat pump should be higher than 70 °C. The experience of implementa- ...
... externally supplied heat K el Carbon dioxide emission coefficient of electricity Q̇ w Recoverable heat power-treated sewage wastewater ṁ Mass flow of treated wastewater t Temperature difference of treated wastewater at entrance and exit of heat exchanger–evaporator Q̇ h Thermal power of heat ...
... comprises 85% of the total amount of persons daily water demand (Hepbasli et al. 2014). Sewage wastewater is characterized by a small vari- ation of flow rate and temperature over the year (Meggers and Leibundgut 2011). Due to the high heat capacity and density, wastewater is considered as a suitable ...Marija Živković, Dejan Ivezić. "Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability" in Clean Technologies and Environmental Policy, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s10098-021-02063-6
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Age and microfacies of oceanic Upper Triassic radiolarite components from the Middle Jurassic ophiolitic mélange in the Zlatibor Mountains (Inner Dinarides, Serbia) and their provenance
Hans-Juergen Gawlick, Nevenka Đerić, Sigrid Missoni, Nikita Bragin, Milan Sudar, Divna Jovanović (2017)Neo-Tethys, trench-like basins, synorogenic deposition, evolving thrust belt, Triassic palaeogeography... microfacies analysis of both radiolarites and limestones provides information about their depositional setting (e.g., relative water depth, transport regime, environment — e.g., bioturbating biota, oxygen con- tent) and diagenetic overprint. Whereas microfacies analysis of limestones is a common tool ...
... filled the depression of an older trench-like basin fill with a rough topography (Fig. 9). In the first phase of depo- sition the turbidites and mass-flow deposits filled the fissures and depression of the older topography. It is important is to note, that the underlying blocks derive exclusively from ...Hans-Juergen Gawlick, Nevenka Đerić, Sigrid Missoni, Nikita Bragin, Milan Sudar, Divna Jovanović. "Age and microfacies of oceanic Upper Triassic radiolarite components from the Middle Jurassic ophiolitic mélange in the Zlatibor Mountains (Inner Dinarides, Serbia) and their provenance" in Geologica Carpathica (2017)
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The subthermal potential of karstic groundwater of Kučaj–Beljanica region in Serbia estimated by the multivariate analysis
Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeLjiljana Vasić, Dragana Ž. Živojinovic, Vladana Rajaković-Ognjanović, Huang Fen, Cao Jianhua. "The subthermal potential of karstic groundwater of Kučaj–Beljanica region in Serbia estimated by the multivariate analysis" in Environmental Earth Sciences, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s12665-021-09392-1
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Pleistocene rhinoceros from Bogovina Cave: the first report of Stephanorhinus hundsheimensis Toula, 1902 (Mammalia, Rhinocerotidae) from Serbia
Finds of Pleistocene rhinoceros are rare in Serbia, and only one species (the woolly rhinoceros Coelodonta antiquitatis Blumenbach, 1799) has been reported so far. The current paper presents the dental material of an extinct so-called Hundsheim rhinoceros, Stephanorhinus hundsheimensis Toula, 1902 from Bogovina Cave (East ern Serbia). Both the morphological and metric characteristics of the teeth are consis tent with the attribution to S. hundsheimensis. Unfortunately, the rhinoceros material originated from an uncertain geological context, so there is no ...... as the most ecologically tolerant rhi- noceros of the Palaearctic Plio-Pleistocene, with an extreme dietary variability (ranging from a graz- ing regime to one of predominantly browsing). Though successful over a long period time in the western Palaearctic, S. hundsheimensis finally became extinct around ...Predrag Radović, Miloš Radonjić, Emmanuel Billia. "Pleistocene rhinoceros from Bogovina Cave: the first report of Stephanorhinus hundsheimensis Toula, 1902 (Mammalia, Rhinocerotidae) from Serbia" in Palaeontologia Electronica, Coquina Press (2020). https://doi.org/10.26879/985
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Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept
Improvements of Machine Learning-based landslide prediction models can be made by optimizing scale, customizing training samples to provide sets with the best examples, feature selection, etc. Herein, a novel approach, named Cross-Scaling, is proposed that includes the mixing of training and testing set resolutions. Hypothetically, training on a coarser resolution dataset and testing the model on a finer resolution should help the algorithm to better generalize ambiguous examples of landslide classes and yield fewer over/underestimations in the model. This ...Uroš Đurić, Miloš Marjanović, Zoran Radić, Biljana Abolmasov. " Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept" in Engineering Geology , Elsevier (2019). https://doi.org/10.1016/j.enggeo.2019.05.007
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Stratigraphic implications of the Mio-Pliocene geodynamics in the area of Mt. Avala: new evidence from Torlak Hill and Beli Potok (Belgrade, Serbia)
Mt. Avala is located on the southern margin of the Pannonian basin (SPB), a border zone between the uplifted morphostructures of the Dinarides and Carpathian-Balkanides. Similar to the Pannonian basin, tectonostratigraphic evolution of the Mt. Avala area during the last 23 Ma has is characterized by syn- and post-rifting processes as well as tectonic inversion. Here, we present the results of field investigations of the Miocene‒Pliocene dynamics that led to different spatial positions of the same stratigraphic units (e.g. ...... as the uplift of Torlak Hill progressed, the Zavojnička Reka changes its flow from SE-NW and turns to- wards the E-NE, away from Torlak. This activity led to the for- mation of the new, local structure along which the new flow was established (Fig. 21). The Beli Potok trough is situated between these ...
... Reka (ZF) and Kaludjerica (KF) faults belong to this system. Later, from the post-Sarmatian time, some of them were reactivated in the compressional regime and show a reverse character (Figs. 1, 16, 18 and 21). This system is mainly inherited from the collisional processes that happened during Late ...
... formed by movements along the Rakovica fault system (RF) and the Torlak fault (Fig. 20). In respect of the geomorphologic properties of the unusual flow/geometry of the Zavojnička Reka near the Torlak block, we don’t have documented data. But, based on some observations by MAROVIĆ & KNEŽEVIĆ (1985) ...Ljupko Rundić, Meri Ganić, Slobodan Knežević, Dejan Radivojević, Miloš Radonjić. "Stratigraphic implications of the Mio-Pliocene geodynamics in the area of Mt. Avala: new evidence from Torlak Hill and Beli Potok (Belgrade, Serbia)" in Geologia Croatica (2019). https://doi.org/10.4154/gc.2019.11
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Back-arc underplating provided crustal accretion affecting topography and sedimentation in the Adria microplate
Paolo Mancinelli, Vittorio Scisciani, Cristina Pauselli, Gérard M. Stampfli, Fabio Speranza, Ivana Vasiljević (2021)Supported by evidence of deep crustal sources for the observed magnetic anomalies in Central Italy and by outcropping gabbros in the Croatian archipelago, we model the observed gravity and magnetic anomalies in the Central Adriatic Sea and surroundings. We suggest that the major magnetic anomalies in the area are related to a wide underplating and propose that this volume represents the first stage of the back-arc Adria continental breakup in Early Permian times. During the Palaeotethys-Adria collision, underplating has ...Paolo Mancinelli, Vittorio Scisciani, Cristina Pauselli, Gérard M. Stampfli, Fabio Speranza, Ivana Vasiljević. "Back-arc underplating provided crustal accretion affecting topography and sedimentation in the Adria microplate" in Marine and Petroleum Geology, Elsevier Ltd. (2021). https://doi.org/10.1016/j.marpetgeo.2021.105470
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Ефикасност дистрибуције и коришћења природног гаса у домаћинствима
Dejan Brkić (2010-03-30)Природни гас ће се у будућности све више користити као енергент за подмиривање грејних потреба становништва у српским градовима. Стога је потребно изнаћи најповољнији начин употребе природног гаса. Природни гас се може користити за подмирење грејних потреба становништва на два дијаметрално супростављена начина, и то директно, тако што би се гас директно уводио у зграде путем дистрибутивног система за снабдевање гасом и затим сагоревао у гасном котлу којим је сваки стан опремљен (гасни дистрибутивни систем), или индиректно, тако што ...prirоdni gаs, distribuciја gаsа,grејаnjе, cеvоvоdi, cеvоvоdnе mrеžе,fаktоr trеnjа pri prоtоku fluidа,urbаnizаm... umber and/or relative pipe roughness for all flow regimes from laminar through partially (including ‘smooth’ hydraulic regime) to fully turbulent flow of natural gas or other fluids. The friction factor is related to fluid‐flow rate, fluid properties and pipe characteristics ...
... the Moody diagram. In the hydraulically smooth regime as typical for flow through PVC pipes, the friction factor is a function of Reynolds number only and the resistance to flow is independent of relative roughness. This regime is restricted to small values of Reynolds numb ...
... Fitting the flow regime in the internal structure of heat transfer systems. International Communications in Heat and Mass Transfer 33(1), 30‐38. (на енглеском) Л ит ер ат ур а ‐ 191 ‐ 122. Goudar, C.T., Sonnad, J.R. 2003. Explicit friction factor correlation for turbulent flow in smooth pipes ...Dejan Brkić. "Ефикасност дистрибуције и коришћења природног гаса у домаћинствима" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2010-03-30)