Претрага
83 items
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Дефинисање геотехничких параметара еолских седимената земуснког платоа на основу лабораторијских и теренских SPT испитивања
Ђорђе Крзман (2024)Циљ овог рада је био да се одреде геотехничке караткеристике предметног терена што представља полазну основу за рационално пројектовање и градњу. Истражним бушењем утврђено је да предметни терен изграђују четри лесна хоризонта и три слоја погребене земље до дубине од 22-23 m. Лабораторијским испитивањем добијени су ефективни параметри смичуће чврстоће, где се кохезија најчешће креће између c’=14 и 18 kPa, а угао унутрашњег трења f'= 25 - 30 °. Теренска SPT испитивањем уз коришћење прихваћених корелација у геотехничкој пракси ...... HopoppopeNa eBW2s-2 HSTIEOTI TEC TXOPVISOHT: RoGreo -7 jnur=a co oO KoTG 9507 a rapruio, c ipocnoj-OM cO BO FoCia (98,26) “ Exploratory borehole for metro station Loess doposits. si | .auehy 102-104uwa. Tipauuntiacr o npauinHacro-neckoaur, canpxat Tparose Gurbaka M kapGowarıı · with ground surface elevation ...
... recently performed VicrpaxHa GyuioTMHa 3a MeTpo cTaHMLy BW2s-2} ca KOTOM TepeHa - HOBOM3Be/leHa a (98,2&) (98,26) Exploratory borehole for metro station , with ground surface elevation - recently performed VicrpaxHo-nujeaoveTapcka GyuioTMHa ca KkOTOM TepeHa - HOBOM3BeneHa OBWZPS—B BWZPS—B ...
... recentiy performed | onrpaaona Gyuyomaia aa Merpo crauy– oBW2s-2 | BWDMs-2 | a Korow Tepeta - HoBow3BoneNar (98,2%) |. Exploratory borehole for metro station 198,26) | with ground surface elevation - recentiy performed 3 a a _ . , i - – | -. _!·u•:" % KJ ___ G r — — e p a · —— [ARyBVIJARHE ...Ђорђе Крзман. Дефинисање геотехничких параметара еолских седимената земуснког платоа на основу лабораторијских и теренских SPT испитивања, 2024
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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)... later in this text. Stojiljkovi} et al. [3] describe an installation intended for a drying plant. A pilot plant was installed in the heat-exchange station at the Gejzir Hotel of Sijarinska Banja. The heat power avail- able to the industry was 2.5 MW from thermal water pumped at the rate of only 15 l/s ...
... later in this text. Stojiljkovié et al. [3] describe an installation intended for a drying plant. A pilot plant was installed in the heat-exchange station at the Gejzir Hotel of Syarinska Banja. The heat power avail- able to the industry was 2.5 MW from thermal water pumped at the rate of only 15 I/s ...Jana Stojković, Goran Marinković, Petar Papić, Mihailo Milivojević, Maja Todorović, Marina Ćuk. "The analysis of the geothermal energy capacity for power generation in Serbia" in Thermal Science, National Library of Serbia (2013). https://doi.org/10.2298/TSCI120215033S
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Groundwater gravitational circulation of Karst Veliko Vrelo and Malo Vrelo springs by isotope and the noble gas method: case study of the Beljanica Massif
Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental ChemistryLjiljana Vasić, Laszlo Palcsu, Huang Fen. "Groundwater gravitational circulation of Karst Veliko Vrelo and Malo Vrelo springs by isotope and the noble gas method: case study of the Beljanica Massif" in Environmental Earth Sciences, Springer Science and Business Media LLC (2019). https://doi.org/10.1007/s12665-019-8294-0
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Modeliranje disperzije dimnih gasova iz termoelektrane Kostolac B
Bojan Živanović (2024)Bez hrane se može preživeti nedelju dana, bez vode svega nekoliko dana, međutim, bez vazduha se može preživeti najmanje, nekoliko minuta. Pitanje je kakav uticaj na zdravlje čoveka i okoline ima vazduh koji je lošeg kvaliteta, a kojem je skoro celokupno stanovništvo planete izloženo? Ovaj rad se bavi problematikom modeliranja disperzije dimnih gasova iz novog bloka B3 TE ,,Kostolac’’ B. Ključni momenti koji će biti predstavljeni jesu zagađenje, zdravstveni efekti, modeliranje disperzije i analiza dobijenih rezultata korišćenjem programa AERMOD. Analiziran ...... desulphurization process in the “Kostolac B” thermal power station, both during the construction of the new station B3 and in already existing stations BI and B2. The possibility of fitting the new facilities necessary for the new station B3, the second phase of “Kostolac B” construction, into the ...
... on people”s health and environment? This paper deals with the problems of modeling of flue gas dispersion from the new station B3 ofthe “Kostolac B” thermal power station. The key parts that are presented are pollution, health effects, dispersion modeling and analysis of the results by using the ...
... Consequently, it can be expected that their impact on people”s health will be within limits ofsocially acceptable norms and risks. Putting new station into operation, it will be possible that some of the old sections be removed from drive into cold reserve or operate less. This has a positive ...Bojan Živanović. Modeliranje disperzije dimnih gasova iz termoelektrane Kostolac B, 2024
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Advantages and Disadvantages of a Parallel and Zigzag Method of Acquisition in Walking Mode in Magnetometric Archeological Research
магнетометријска испитивања, цик-цак и паралелна аквизиција у ходајућем моду, линеарне аномалије, археологија... acquisition error level is signifi cantly higher than that which is desirable in an archaeological survey. Therefore, it is better to use a total station to read the geographic coordinates of the investigation polygon where the magnetic measurements are acquired, rather than GPS which assigns unif ...
... high-resolution data and, despite the high accuracy of the instrument, it is desirable to have the polygon coordinates measured using an absolute station. Also, if large areas are to be explored, it is desirable to divide them into a se- ries of smaller exploration polygons with margin lengths not ...Mirko Petković, Vesna Cvetkov, Branislav Sretenović. "Advantages and Disadvantages of a Parallel and Zigzag Method of Acquisition in Walking Mode in Magnetometric Archeological Research" in Arheologija i prirodne nauke (2014)
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The state and perspective of the natural gas sector in Serbia
The strategy of long-term energy development of Serbia identifies an increase of share of natural gas in final energy consumption as one of the main aims. Serbia has signed a strategic agreement with the Russian Federation on cooperation in the oil and gas sector, within which the project South Stream pipeline is planned to be realized. In addition, the Republic of Serbia has signed the Treaty that establishes the Energy Community and accepted the obligation to implement the Energy ...Dejan Ivezić, Marija Živković, Dušan Danilović, Aleksandar Madžarević, Miloš Tanasijević. "The state and perspective of the natural gas sector in Serbia" in Energy Sources, Part B: Economics, Planning and Policy, Taylor & Francis Group, LLC (2016). https://doi.org/http://dx.doi.org/10.1080/15567249.2013.858796
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Improving efficiency of thermal power plants through mine coal quality planning and control
Главни циљ контроле квалитета угља у рудницима лигнита је снабдевање термоелектрана угљем чији квалитет мора да се креће унутар одређених квалитативних ограничења. Карактеристике угља могу да утичу на ефикасност, поузданост и расположивост како котла тако и јединица за контролу емисије. У овом раду аутори су презентовали интегрисану симулацију рударског процеса као нови приступ у истраживању променљивости калоричне вредности угља приликом експлоатације комплексног лежишта лигнита. Резултати таквог приступа омогућавају драгоцен увид у перформансе континуалног рударског система у смислу контроле променљивости ...Mirjana Banković, Dejan Stevanović, Milica Pešić, Aleksandra Tomašević, Ljiljana Kolonja. "Improving efficiency of thermal power plants through mine coal quality planning and control" in Thermal Science, Vinča Institute of Nuclear Sciences (2018). https://doi.org/10.2298/TSCI170605209B
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Bilingual lexical extraction based on word alignment for improving corpus search
Jelena Andonovski, Branislava Šandrih, Olivera Kitanović. "Bilingual lexical extraction based on word alignment for improving corpus search" in The Electronic Library, Emerald (2019). https://doi.org/10.1108/EL-03-2019-0056
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A comparison between ARIMA, LSTM, ARIMA-LSTM and SSA for cross-border rail freight traffic forecasting: the case of Alpine-Western Balkan Rail Freight Corridor
Miloš Milenković, Miloš Gligorić, Nebojša Bojović, Zoran Gligorić. "A comparison between ARIMA, LSTM, ARIMA-LSTM and SSA for cross-border rail freight traffic forecasting: the case of Alpine-Western Balkan Rail Freight Corridor" in Transportation Planning and Technology, Informa UK Limited (2023). https://doi.org/10.1080/03081060.2023.2245389
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Proračun recirkulacionih pumpi u postrojenju za odsumporavanje dimnih gasova ,,TENT B"
Tomislav Trpković (2024)Predmet ovog rada baziraće se na proračunu i usvajanju mašinskih instalacija potrebnih za nesmetano funkcionisanje sistema dve međusobno povezane celine Absorber - Pumpna stanica, preko FRP ( Fiberglass Reinforced Plastic) cevovoda kojim se odvija transport suspenzije krečnjaka neophodnog u samom procesu odsumporavanja dimnih gasova. Pored tehničkog opisa same tehnologije koja uključuje tri objekta: Absorber, Pumpna Stanica i cevovod, glavni deo rada odnosiće se na proračun i usvajanje mašinskih instalacija koji uključuju recirkulacione radijalne centrifugalne pumpe i cevovode kojima ...postrojenje za odsumporavanje dimnih gasova, termoelektrana, pumpna stanica, FRP cevovod, Absorber, transport suspenzije gipsa, prirubnica, ventil, potisni cevovod, usisni cevovod... Pump Station, connected by FRP (Fiberglass Reinforced Plastic) pipelines that transport the gypsum suspension essential in the flue gas desulfurization process. In addition to the technical description of the technology itself, which includes three facilities: the Absorber, the Pump Station, and ...
... adoption (dimensioning) of the mechanical installations at one pump station B2 at absorber B2, whose calculation will be performed in this paper. Keywords: Flue Gas Desulfurization Plant, Thermal Power Plant, Pump Station, FRP Pipeline, Absorber, Gypsum Slurry Transport, Flange, Valve, Discharge ...
... a separate section that will generally address the types of pumps. The fourth part of the paper will include a technical description of the Pump Station, explaining in detail the operation of the transport of the limestone and gypsum suspension through the recirculating pumps and pipelines to the ...Tomislav Trpković. Proračun recirkulacionih pumpi u postrojenju za odsumporavanje dimnih gasova ,,TENT B", 2024
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Flood protection and water utilization of karst poljes: example of Gatačko Polje, Eastern Herzegovina
Tina Dašić, Ljiljana Vasić (2020)Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry,Global and Planetary ChangeTina Dašić, Ljiljana Vasić. "Flood protection and water utilization of karst poljes: example of Gatačko Polje, Eastern Herzegovina" in Environmental Earth Sciences, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s12665-020-08987-4
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Influence of DEM resolution on numerical modelling of debris flows in RAMMS - Selanac case study
Debris flows induced by intensive rainfall represent very hazardous phenomena in many parts of the World. Methods for prediction of runout distance of flow like mass movements are different and depending on the input data, rheology, and available or appropriate numerical solution. However, sometimes it is not easy to obtain pre event and post event high-resolution data in the rural or mountainous area. Thus, the topology of terrain is the most important input parameter for the every real case ...... Serbia. Most of new occurrences were defined as granular flows, which were not so typical landslide type for this area. The nearest meteorological station Loznica registered maximum of 230 mm of rain for 72 hours. Huge amount of material started to move as a block during the night of May, 15th 2014 ...Jelka Krušić, Biljana Abolmasov, Mileva Samardžić Petrović. "Influence of DEM resolution on numerical modelling of debris flows in RAMMS - Selanac case study" in 4th Regional Symposium on Landslides in the Adriatic Balkan Region, 23-25 October 2019, Sarajevo, Bosnia and Herzegovina, Geotechnical Society of Bosnia and Herzegovina (2019). https://doi.org/ 10.35123/ReSyLAB_2019
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Numerical modeling of Selanac debris flow propagation using SPH code
The Selanac debris flow is a very huge event triggered after extreme rainfall caused by Cyclone Tamara activity in the Republic of Serbia in May 2014. The Selanac case study was already modelling in different programs using Voellmy rheology assumptions like RAMMS software. In this paper research are focusing particularly on the process of debris flowing from initiation zone to main deposition area using Geoflow SPH two-phase model considering frictional rheology law. Main rheological parameters are back-calculated using also ...... The total length of the flow is 1.5 km and width is about 350 m in the widest part in the source area (Fig. 2). The nearest Main Meteorological Station Loznica (around 50 km far way) had registered maximum of 230 mm of precipitation in 72 hours for period 14-16 May 2014. Figure 2 A) Location ...Jelka Krušić, Biljana Abolmasov, Miloš Marjanović, Manuel Pastor, Saeid M. Tayyebi . "Numerical modeling of Selanac debris flow propagation using SPH code" in SCG-XIII International Symposium on Landslides. Cartagena, Colombia- February 22-26, 2021, International Society for Soil Mechanics And Geotechnical Engineering (2021)
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Self-Engineering: Possibilities for Maintenance Operations in the Mining Machines Industry
Self-engineering is a relatively new branch of knowledge that aims to understand how systems could “autonomously” re-configure or repair themselves without the intervention of the operators. A direct field of application is within the maintenance spectrum. Having systems or machines capable of self-detecting or even self-repairing could represent a game-changer, in capital asset fields such as the mining industry in particular. This paper aims to investigate the possible benefits and challenges of self-engineering / self-maintenance concerning mining machines, specifically bucket-wheel ...self-engineering, self-maintenance, maintenance operations, mining industry, bucket-wheel excavator, gearbox revitalizationSteven Manders, Milorad Pantelić, Vladimir Milisavljević, Alberto Martinetti. "Self-Engineering: Possibilities for Maintenance Operations in the Mining Machines Industry" in SSRN Electronic Journal, Elsevier BV (2021). https://doi.org/10.2139/ssrn.3945979
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Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling
Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeBranislav Petrović, Veljko Marinović, Zoran Stevanović. "Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling" in Environmental Earth Sciences, Springer Science and Business Media LLC (2023). https://doi.org/10.1007/s12665-023-10911-5
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Proširivanje upita zasnovano na leksičkim resursima
U radu je opisano kako se leksički resursi za srpski jezik i softverski alati, razvijeni u okviru Grupe za jezičke tehnologije Univerziteta u Beogradu, mogu koristiti za unapređenje postavljanja upita. Rezultati pretrage mogu biti značajno unapređeni korišćenjem različitih leksičkih resursa, kakvi su morfološki rečnici i semantičke mreže. Izloženi pristup može se iskoristiti i u Sistemu naučnih, tehnoloških i poslovnih informacija, jer je efikasno pretraživanje ovog dragocenog resursa, imajući u vidu njegovu heterogenost i obim, kao i preovladavajući tekstualni sadržaj, ...... javljali u resursima. Da bi se rešili ovi problemi heterogenosti nastalo je integrisano i prilagodljivo softversko rešenje, nazvano WS4LR (Work Station for Lexical Resources - Radna stanica za leksičke resurse) kojim je omogućeno upravljanje i rad sa pojedinačnim resursima, kao i njihovo integrisanje ...Ranka Stanković, Ivan Obradović, Cvetana Krstev. "Proširivanje upita zasnovano na leksičkim resursima" in SNTPI 09 - Naučno-stručni skup Sistem naučnih, tehnoloških i poslovnih informacija, Beograd 19. i 20. jun 2009, Beograd : Fakultet informacionih tehnologija (2009)
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Development of integrated fuzzy model for mine management optimization
Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić (2023)... 48(1), 926. BAJIĆ D., D. POLOMČIĆ (2014) Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia, Geološki anali Balkanskoga poluostrva, 75, 1085—110, DOT: 10.2298/GABP1475103B ISSN: 0350-0608. 1| KwANG H. C., H. J. LEB ...Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić. "Development of integrated fuzzy model for mine management optimization" in Comptes rendus de l'Académie Bulgare des Sciences (2023)
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Spatial assessment of the areas sensitive to degradation in the rural area of the municipality Čukarica
Nature and Landscape Conservation, Soil Science, Agronomy and Crop Science, Water Science and TechnologyNatalija Momirović, Ratko Kadović, Veljko Perović, Miloš Marjanović, Aleksandar Baumgertel. "Spatial assessment of the areas sensitive to degradation in the rural area of the municipality Čukarica" in International Soil and Water Conservation Research, Elsevier BV (2019). https://doi.org/10.1016/j.iswcr.2018.12.004
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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 ...... are formed (two vertical wells: one injection and one production), the gasification 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 ...
... estep.org.in/presentationsfromspeakers, Presentation Files 12-UCG Site Selec, 2008 ***. Ninham Shand Consulting Services, „Proposed Coal Fired Power Station and Associated Insfrastruc- ture in the Witbank Area, Report Eskon, Washington, USA, 2007 Petrović, D., Expertise on the Possibilities of Greater ...David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić. "Valorization of non-balanced coal reserves in Serbia for underground coal gasification" in Thermal Science (2019). https://doi.org/10.2298/TSCI190725390P
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The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector
Natural gas is used for the production of almost 20% of total energy today. The natural gas security of the Republic of Serbia is an urgent strategic, political and security issue. Serbia is one of the most vulnerable countries in Southeast Europe, because it only has one supply route. This study is a contribution to efforts to better understand the factors affecting energy security through the implementation of a new methodology based on the fuzzy–AHP synthesis model for measuring ...... ’’ Planed gas pipelines Gas pipeline PE Srbijagas Gas pipeline Yugorosgas Main measuring regulation station Input transmitter station Output transmitter station Underground storage Compressor station ‐ ...
... Yugorosgaz-Transport Capacity, million m3/day 18 * ~2.2 Pressure, bar 16–75 16–55 Length, km 2339 125 Diameter DN 150–DN 750 DN 168–DN 530 Compressor station, МW 4.4 – Metering and regulating stations 248 5 Number of entries into the transmission system PC Srbijagas Yugorosgaz-Transport From another tr ...Aleksandar R. Madžarević, Dejan D. Ivezić, Miloš L. Tanasijević, Marija A. Živković. "The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector" in Symmetry, MDPI AG (2020). https://doi.org/10.3390/sym12060908