Претрага
2213 items
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Evaluation of the effects of wastewater heat pump integration into district heating systems by simulation
Dejan Ivezić, Marija Živković, Dimitrije Manić, Aleksandar Madžarević, Boban Pavlović, Dušan Danilović (2023)The integration of wastewater heat pumps (using purified water) in district heating systems is analyzed in this paper. The simulation procedure is proposed to analyze the impacts of stochasticity of purified water temperature and flow to heat pump integration and operation. The analysis includes calculation of the daily and seasonal coefficient of performance, as well as fossil fuel savings and CO2 emission reduction due to wastewater heat pump use. The proposed procedure is implemented for the case study in ...Dejan Ivezić, Marija Živković, Dimitrije Manić, Aleksandar Madžarević, Boban Pavlović, Dušan Danilović. "Evaluation of the effects of wastewater heat pump integration into district heating systems by simulation" in Thermal Science, National Library of Serbia (2023). https://doi.org/10.2298/TSCI220813168I
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The influence of alkyl polyglucosides (and highly ethoxylated alcohol boosters) on the phase behavior of a water/toluene/technical alkyl polyethoxylate microemulsion system
Marija Ilic, Franz-Hubert Haegel, Vesna Pavelkic, Dragan Zlatanovic, Snezana Nikolic-Mandic, Aleksandar Lolic, Zoran Nedic (2016)The influence of additives (alkyl polyglucoside, Glucopon 600 CS UP and alcohol ethoxylate C18E100) on the behavior of the water/toluene/Lutensol ON 50 (technical oxoalcohol, i-C10E5) microemulsion system as a function of temperature and composition has been investigated. The phase behavior of the microemulsions was determined by vertical sections through the Gibbs phase prism (fish-like phase diagrams). Alkyl polyglucoside shifts the one phase region to lower temperatures compared with water/toluene/Lutensol ON 50 mixtures. This is contrary to the expectation, considering ...микроемулзија, толуен, алкил полиглукозид, оксоалкохол етоксилат, појачивач ефикасности, „fish“ дијаграмиMarija Ilic, Franz-Hubert Haegel, Vesna Pavelkic, Dragan Zlatanovic, Snezana Nikolic-Mandic, Aleksandar Lolic, Zoran Nedic. "The influence of alkyl polyglucosides (and highly ethoxylated alcohol boosters) on the phase behavior of a water/toluene/technical alkyl polyethoxylate microemulsion system" in Chemical Industry and Chemical Engineering Quarterly, National Library of Serbia (2016). https://doi.org/ 10.2298/CICEQ141105015I
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A contribution to the understanding of the discharge dynamics and water balance of the karst spring Gornji Dušnik (Suva Planina)
A sufficiently long time-series of daily discharges is needed to assess the discharge dynamics and calculate the water balance equation parameters of a spring (river source). The paper assumes that a catchment is gauged if a time-series of observations of at least 30 years is available, which is a rare case in Serbia. One-year monitoring is often set up to verify the reserves of a water source or spring intended for capture. Monitoring ceases after the final report is ...Aleksandar Tanasković, Vesna Ristić Vakanjac, Dušan Polomčić, Jelena Ratković. "A contribution to the understanding of the discharge dynamics and water balance of the karst spring Gornji Dušnik (Suva Planina)" in National Conference with International Participation “GEOSCIENCES 2023”, Review of the Bulgarian Geological Society, Sofia : Bulgarian Geological Society (2023)
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Non-Detonating Chemical Mixture for Non-Invasive Methods of Rock Breaking
Within the Innovation developed several different non-detonating chemical mixtures for non-invasive methods of rock breaking. Laboratory and polygon tests gave the satisfactory results and knowledge enough to start the practical experiments in the field. The basis of this innovation is a theoretical assumption that certain chemical mixtures release a large quantity of gases during combustion. If these gases are found in the enclosed space a growing pressure on the walls of the chamber in which combustion takes place will ...Lazar Kričak, Milanka Negovanović, Nikola Simić, Stefan Milanović. "Non-Detonating Chemical Mixture for Non-Invasive Methods of Rock Breaking" in X International Scientific Congress Innovations 2024, Varna, Bulgaria, 24-27. jun 2024, Scientific Technical Union of Mechanical Engineering "Industry 4.0" (2024)
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Effect of Properties of Working Fluids on the Efficiency of a Low-Temperature Organic Rankine Cycle
Decarbonization of all segments of energy systems, both on the supply and demand side, is one of the main goals of the energy transition. Electricity supply in the future will largely rely on generation from intermittent energy sources: wind and solar. Locally available, non-utilized alternative low-temperature energy sources as hydro-geothermal wells, and abounded oil and gas wells, have the potential to provide continual energy production over the year. Electricity generation from these energy sources is carried out with working ...Marija Živković, Aleksandar Mijatović, Dejan Ivezić, Boban Pavlović. "Effect of Properties of Working Fluids on the Efficiency of a Low-Temperature Organic Rankine Cycle" in The 21st International Conference on Thermal Science and Engineering of Serbia, Niš, Serbia, October 2024, University of Niš, Faculty of Mechanical Engineering in Niš (2024)
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A contribution to the understanding of the discharge dynamics and water balance of the karst spring Gornji Dušnik (Suva Planina)
A sufficiently long time-series of daily discharges is needed to assess the discharge dynamics and calculate the water balance equation parameters of a spring (river source). The paper assumes that a catchment is gauged if a time-series of observations of at least 30 years is available, which is a rare case in Serbia. One-year monitoring is often set up to verify the reserves of a water source or spring intended for capture. Monitoring ceases after the final report is ...Aleksandar Tanasković, Vesna Ristić Vakanjac, Dušan Polomčić, Jelena Močević. "A contribution to the understanding of the discharge dynamics and water balance of the karst spring Gornji Dušnik (Suva Planina)" in Review of the Bulgarian Geological Society, Bulgarian Geological Society (2023). https://doi.org/10.52215/rev.bgs.2023.84.3.315
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The influence of alkyl polyglucosides (and highly ethoxylated alcohol boosters) on the phase behavior of a water/toluene/technical alkyl polyethoxylate microemulsion system
Marija Ilić, Franz-Hubert Haegel, Vesna Pavelkić, Dragan Zlatanović, Snežana Nikolić-Mandić, Aleksandar Lolić, Zoran Nedić (2016)The influence of additives (alkyl polyglucoside, Glucopon 600 CS UP and alcohol ethoxylate C18E100) on the behavior of the water/toluene/Lutensol ON 50 (technical oxoalcohol, i-C10E5) microemulsion system as a function of temperature and composition has been investigated. The phase behavior of the microemulsions was determined by vertical sections through the Gibbs phase prism (fish-like phase diagrams). Alkyl polyglucoside shifts the one phase region to lower temperatures compared with water/toluene/Lutensol ON 50 mixtures. This is contrary to the expectation, considering ...mikroemulzija, toluen, alkil poliglukozid oksoalkohol etoksilat, pojačivač efikasnosti, dijagrami “ribe”Marija Ilić, Franz-Hubert Haegel, Vesna Pavelkić, Dragan Zlatanović, Snežana Nikolić-Mandić, Aleksandar Lolić, Zoran Nedić. "The influence of alkyl polyglucosides (and highly ethoxylated alcohol boosters) on the phase behavior of a water/toluene/technical alkyl polyethoxylate microemulsion system" in Chemical Industry and Chemical Engineering Quarterly, National Library of Serbia (2016). https://doi.org/ 10.2298/CICEQ141105015I
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Geotechnical zoning of the terrain along the first section of E-80 highway in Serbia – SEETO route 7
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 ...Dragoslav Rakić, Zoran Berisavljević, Irena Basarić, Snežana Bogdanović, Jovana Janković. "Geotechnical zoning of the terrain along the first section of E-80 highway in Serbia – SEETO route 7" in Proceedings of the XVII European Conference of Soil Mechanics and Geotechnical Engineering ECSMGE-2019, Reykjavik, Iceland, 1-6. 09. 2019., ISSMGE, ECSMGE-2019 (2019). https://doi.org/10.32075/17ECSMGE-2019-0393
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Transition pathways of household heating in Serbia: Analysis based on an agent-based model
To explore pathways of the energy transition of household heating, an agent-based simulation model was developed for the case of the Serbian household sector. The model is focused on individual entities (households) with the objective to explore the effects of policy instruments on energy transition in households with individual heating systems. Empirically collected survey data were used as input for households’ attitudes towards sustainable heating. Simulations showed that the proposed instruments would lead to higher heating efficiency and less ...energetska tranzicija, modeliranje bazirano na agentima, sistemi grejanja, sektor domaćinstva, obnovljivi izvori energije, emisija CO2Boban Pavlović, Dejan Ivezić, Marija Živković. "Transition pathways of household heating in Serbia: Analysis based on an agent-based model" in Renewable and Sustainable Energy Reviews, Elsevier BV (2022). https://doi.org/10.1016/j.rser.2022.112506
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Effects of bentonite binder dosage on the properties of green limestone pellets
Vladimir Jovanović, Dinko Knežević, Živko Sekulić, Milan Kragović, Jovica Stojanović, Slavica Mihajlović, Dragana Nišić, Dragan Radulović, Branislav Ivošević, Milan Petrov (2016)This paper presents the results of tests carried out to determine how the dosage of bentonite added as binder, affects the properties of green pellets made of the limestone fines that originate from Lithothamnium limestone processing. Bentonite was added to limestone in different mass fractions (1, 2.5, 5 and 10%), whereas all the other parameters of the pelletizing process remained constant. The aim of pelletizing was to consolidate limestone fines and form mechanically stable pellets, provided that all the ...Vladimir Jovanović, Dinko Knežević, Živko Sekulić, Milan Kragović, Jovica Stojanović, Slavica Mihajlović, Dragana Nišić, Dragan Radulović, Branislav Ivošević, Milan Petrov. "Effects of bentonite binder dosage on the properties of green limestone pellets" in Chemical Industry, Beograd : National Library of Serbia (2016). https://doi.org/10.2298/HEMIND160210023J
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Football terminology: compilation and transformation into OntoLex-Lemon resource
У овом раду представља се пројекат који је у развоју, креирање првог дигиталног фудбалског речника на српском језику, као и да демонстрација примене модела OntoLex и љегових модула. OntoLex-FrAC модул укључује информације о учесталости и примерима употребе екстрахованих из корпуса. У овом случају, креиран је корпус за специфичан домен под називом СрФудКо, који садржи чланке вести о фудбалу на српском језику. Вишечлани термини аутоматски су екстраховани из српског корпуса, а затим ручно евалуирани и класификовани као спортски или ...Jelena Lazarević, Ranka Stanković, Mihailo Škorić, Biljana Rujević. "Football terminology: compilation and transformation into OntoLex-Lemon resource" in LDK 2023 – 4th Conference on Language, Data and Knowledge, 12-15 September in Vienna, Austria, Lisabon : NOVA FCSH - CLUNL (2023). https://doi.org/10.34619/srmk-injj
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Increasing the Local Road Network Resilience from Natural Hazards in Municipalities in Serbia
Biljana Abolmasov, Miloš Marjanović, Ranka Stanković, Uroš Đurić, Nikola Vulović. "Increasing the Local Road Network Resilience from Natural Hazards in Municipalities in Serbia" in Progress in Landslide Research and Technology, Volume 3, Issue 1, Springer Cham. (2024). https://doi.org/https://doi.org/10.1007/978-3-031-55120-8_22
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Osnove mašinskog učenja u hidrogeologiji
Mašinsko učenje predstavlja skup metoda koje se u poslednje vreme koriste u brojnim naučnim oblastima i koje su uveliko promenile način na koji analiziramo podatke, pravimo predviđanja i rešavamo složene probleme. Poslednjih godina, mašinsko učenje se pokazalo kao moćan alat u svetu nauke, koji ima ogroman potencijal i u hidrogeologiji. Sa svojom sposobnošću da automatski uči iz ogromne količine podataka, mašinsko učenje otvara nove mogućnosti za rešavanje problema kao što su karakterizacija izdani, procena kvaliteta vode i predviđanje nivoa ...Ivan Drakulić, Dušan Polomčić, Jelena Ratković. "Osnove mašinskog učenja u hidrogeologiji" in Zapisnici srpskog geološkog društva (za 2023. godinu), Srpsko geološko društvo (2024)
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Balkan neanderthals: the late pleistocene palaeoecological sequence of Pešturina cave (Niš, Serbia)
Juan Ochando, Jose S. Carrion, Donatella Magri, Ana B. Marin-Arroyo, Federico Di Rita, Manuel Munuera, Fabrizio Michelangeli, Gabriela Amoros, Stefan Milošević, Katarina Bogićević, Vesna Dimitrijević, Draženko Nenadić, Mirjana Roksandić, Dušan Mihailović (2024)Ovaj rad predstavlja analizu polena iz sedimenata i koprolita hijena iz pećine Pešturine u Srbiji u cilju rekonstrukcije vegetacije i predela koje su naseljavali balkanski neandertalci i rani anatomski moderni ljudi u periodu MIS 5e-3. Između MIS 5e-5c (arheološki slojevi 4c i 4b) i MIS 5b-5a (sloj 4a), polu-pošumljene oblasti su preovlađivale. Tokom MIS 4-3 (slojevi 3-2), vegetacijom su dominirale stepe u kojima su rasle Artemisia i Poaceae. Neandertalci i rani gornjopaleolitski ljudi živeli su u veoma raznovrsnom refugijumu, ...Juan Ochando, Jose S. Carrion, Donatella Magri, Ana B. Marin-Arroyo, Federico Di Rita, Manuel Munuera, Fabrizio Michelangeli, Gabriela Amoros, Stefan Milošević, Katarina Bogićević, Vesna Dimitrijević, Draženko Nenadić, Mirjana Roksandić, Dušan Mihailović. "Balkan neanderthals: the late pleistocene palaeoecological sequence of Pešturina cave (Niš, Serbia)" in Quaternary Science Reviews, Elsevier (2024). https://doi.org/doi.org/10.1016/j.quascirev.2024.108600
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EIT rawmaterials projects in support of the supply chain of critical raw materials for the Eu
Ograničene pojave ležišta primarnih mineralnih sirovina i sve siromašnija ležišta, pored sve većih zahteva za sirovinama potrebnih za zelenu tranziciju, primorali su stručnjake i naučnike u Evropskoj Uniji pa i u svetu da traže nova rešenja za dobijanje potrebnih količina mineralnih sirovina. Naime, najveći proizvođači kritičnih sirovina u svetu se nalaze van EU - Kina, Australija, Brazil, Kongo, itd. Ograničen pristup ovim ležištima, kao i smanjene količine kritičnih sirovina na slobodnom tržištu, uslovili su EU da istražuje nove mogućnosti ...kritične sirovine, EAF i CF pećna prašina, reciklaža, fizičko-hemijska i mineraloška karakterizacijaRadulović Dragan , Stojanović Jovica, Širadović Emilija , Stojković Nevena , Ristović Ivica. "EIT rawmaterials projects in support of the supply chain of critical raw materials for the Eu" in 16th INTERNATIONAL MINING CONFERENCE OMC 2024, Jugoslovenski komitet za površinsku eksploataciju Urednik (2024)
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Some solutions and experiences in tapping coastal karstic aquifers in the Adriatic basin
Stevanović Zoran (2014)Stevanović Zoran. "Some solutions and experiences in tapping coastal karstic aquifers in the Adriatic basin" in Buletini i Shkencave Gjeologjike 1/2014 – Special issue, Proceedings of the XX CBGA Congress, 24-26 September, 2014, Tirana no. 1, Tirana: (2014): 396
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Orientation and optical properties of methylene blue crystal for better understanding of interactions with clay mineral surface
Milošević Maja, Logar Mihovil (2013)Milošević Maja, Logar Mihovil. "Orientation and optical properties of methylene blue crystal for better understanding of interactions with clay mineral surface" in Geophysical Research Abstracts 15, Vienna, Austria:EGU (2013)
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Flux grown β- and γ-spodumene single crystals
Prekajski Marija, Kremenović Aleksandar, Vulić Predrag, Welsch Anna-Maria, Murawski Dawid, Behrens Harald (2012)Prekajski Marija, Kremenović Aleksandar, Vulić Predrag, Welsch Anna-Maria, Murawski Dawid, Behrens Harald. "Flux grown β- and γ-spodumene single crystals" in XIX Conference of the Serbian Crystallographic Society-Abstracts, Bela Crkva, Srbija:Srpsko kristalografsko društvo (2012): 86-87
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Structural, morphological and up-converting luminescence characteristics of nanocrystalline Y2O3:Yb/Er powders
Mančić Lidija, Lojpur Vesna, Vulić Predrag, Rabanal Maria Eeugenia, Dramićanin Miroslav, Milošević Olivera (2012)Mančić Lidija, Lojpur Vesna, Vulić Predrag, Rabanal Maria Eeugenia, Dramićanin Miroslav, Milošević Olivera. "Structural, morphological and up-converting luminescence characteristics of nanocrystalline Y2O3:Yb/Er powders" in NANO 2012, XI International Conference on Nanostructured Materials, Rhodes, Grčka: (2012)
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Crystal-chemistry of the alkaline-earth hydrogen arsenates: crystal structure and vibrational spectraof a new Ba(AsO3OH) polymorphic variety
Đorđević Tamara, Karanović Ljiljana (2010)Đorđević Tamara, Karanović Ljiljana. "Crystal-chemistry of the alkaline-earth hydrogen arsenates: crystal structure and vibrational spectraof a new Ba(AsO3OH) polymorphic variety" in Book of Abstracts, XI General Meeting of the Russian Mineralogical Society combined with Fedorov Session, St. Petersburg, Russia: (2010): 88-89