Претрага
162 items
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Characterization of biochar surface functional groups
In this work, biochar originating from paper fibres was examined. Biochar was prepared via pyrolysis method at 550°C. Oxygen-containing functional groups on biochar surface were determined. The surface functional groups of biochar were analysed by Fourier transform infrared spectroscopy. The amount of oxygen-containing functional groups was performed with Boehm titration. The total acidity of biochar was mostly attributed to carboxylic and lactonic groups.Marija Ilić, Vesna Pavelkić, Aleksandar Lolić, Branko Leković. "Characterization of biochar surface functional groups" in Šesti Naučno-stručni skup Politehnika, Beograd, 10. decembar 2021., Beograd : Akademija tehničkih strukovnih studija (2021)
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Results of Experimental Installation of Roofbolting System in the Mines
Dragan Zlatanović, Marija Ilić, Vladimir Milisavljević, Dragan Ignjatović. "Results of Experimental Installation of Roofbolting System in the Mines" in Mining and Metalurgy Engineering Bor no. 4, Bor:Mining and Metallurgy Institute, Bor (2014): 65-84. https://doi.org/10.5937/MMEB1404065Z
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Развој сектора природног гаса у Србији – Индикатори напретка
Ivezić Dejan, Živković Marija, Madžarević Aleksandar, Ivić Milica. "Развој сектора природног гаса у Србији – Индикатори напретка" in Енергија, економија, екологија 03-Apr no. XX, Beograd:Savez energetičara Srbije (2018): 383-391
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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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Open Educational Resources in Serbia
... Resources in Serbia Ivan Obradović, Ranka Stanković, Marija Blagojević, Danijela Milošević Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Open Educational Resources in Serbia | Ivan Obradović, Ranka Stanković, Marija Blagojević, Danijela Milošević | Current State ...
... dr.rgf.bg.ac.rs Chapter # - will be assigend by editors OPEN EDUCATIONAL RESOURCES IN SERBIA AUTHOR(s) - Ivan Obradović, Ranka Stanković, Marija Blagojević, Danijela Milošević Abstract: This chapter provides a review of open educational resources in Serbia. It covers different aspects ...
... journals and proceedings of scientific conferences, most of them in the area of human language technologies and more than 15 related to TEL. Marija Blagojević University of Kragujevac, Faculty of Technical Sciences Čačak Svetog Save 65, 32 000 Čačak marija.blagojevic@ftn.kg.ac.rs +38130302719 ...Ivan Obradović, Ranka Stanković, Marija Blagojević, Danijela Milošević. "Open Educational Resources in Serbia" in Current State of Open Educational Resources in the “Belt and Road” Countries, Springer Singapore (2020). https://doi.org/10.1007/978-981-15-3040-1_10
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Mogućnost korišćenјa toplotnih pumpi sa otpadnom toplotom iz postrojenјa za prečišćavanјe otpadnih voda kao toplotnim izvorom
U narednom periodu se planira izgradnja nekoliko desetina sistema za prečišćavanje otpadnih voda u većim gradovima u Srbiji. Iskustva iz postrojenja koja su trenutno u radu, pokazuju da bi prečišćena otpadna voda, s obzirom na protok i temperaturu, mogla da predstavlja značajan izvor obnovljive energije. U radu su prikazani primeri dobre prakse korišćenja ove energije u sistemima daljinskog grejanja u zemljama Evropske unije. Analiziran je rad postrojenja za prečišćavanje otpadnih voda u Šapcu i razmotrena je mogućnost njegovog korišćenja ...... 04:24:51 Mogućnost korišćenјa toplotnih pumpi sa otpadnom toplotom iz postrojenјa za prečišćavanјe otpadnih voda kao toplotnim izvorom Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Boban Pavlović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Mogućnost ...
... Mogućnost korišćenјa toplotnih pumpi sa otpadnom toplotom iz postrojenјa za prečišćavanјe otpadnih voda kao toplotnim izvorom | Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Boban Pavlović | Energija, Ekonomija, Ekologija | 2021 | | 10.46793/EEE21-1.11I http://dr.rgf.bg.ac.rs/s/repo/item/0005477 ...
... otpadnih voda kao toplotnim izvorom Possibilities for Utilization of Waste Heat from Wastewater Treatment Plants by Heat Pumps Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Boban Pavlović Univerzitet u Beogradu – Rudarsko-geološki fakultet Rezime - U narednom periodu se planira ...Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Boban Pavlović. "Mogućnost korišćenјa toplotnih pumpi sa otpadnom toplotom iz postrojenјa za prečišćavanјe otpadnih voda kao toplotnim izvorom" in Energija, Ekonomija, Ekologija, University Library in Kragujevac (2021). https://doi.org/10.46793/EEE21-1.11I
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The Impact Assessment of NO2 Emission from District Heating Plant on Local Air Quality, the Case of Zemun, Belgrade
The Belgrade district heating system relies on fossil fuels in heat production, where natural gas has the largest share of around 95% and fuel oil with around 4.4%. The Zemun heating plant is completely fueled with fuel oil. Currently, it is the largest plant that is not fueled with natural gas. The objective of this paper is to assess the impact of NO2 from the Zemun heating plant on local air quality by analyzing and comparing the concentration of ...NO2, Zagađenje vazduha, Kvalitet vazduh na lokalnom nivou, Model disperzije, AERMOD, Daljinsko grejanje, BeogradBoban Pavlović, Uroš Pantelić, Marija Živković, Dejan Ivezić. "The Impact Assessment of NO2 Emission from District Heating Plant on Local Air Quality, the Case of Zemun, Belgrade" in Conference on Sustainable Development of Energy, Water and Environment Systems, Dubrovnik, 10.10.-15.10.2021., University of Zagreb, Zagreb, Croatia; Instituto Superior Técnico, Lisbon, Portugal (2021)
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Gas-lift wells optimization at the oil field "K"
Dušan Danilović, Marija Ilić, Miroslav Crnogorac, Lola Tomić. "Gas-lift wells optimization at the oil field "K"" in Podzemni radovi, University of Belgrade - Faculty of Mining and Geology (2022). https://doi.org/10.5937/podrad2241031D
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Effect of natural gas composition on methane number: A case of gas reservoirs in Serbia
Natural gas is considered as the most environmentally acceptable fossil fuel, thus it is an alternative to petroleum derivate, dominantly used in internal combustion engines. Physical properties of a fuel as well as behavior during combustion process are affected by its composition. This article presents analysis of effect of natural gas composition on methane number (MN), conducted for natural gas deposits in Serbia. For empirically determination of MN: California air resources board (CARB) method and Linear and Anstalt für ...Marija Živković, Milica Ivić, Dejan Ivezić, Aleksandar Madžarević. "Effect of natural gas composition on methane number: A case of gas reservoirs in Serbia" in Energy Sources, Part A: Recovery, Utilization, and Environmental Effects (2017). https://doi.org/10.1080/15567036.2017.1403518
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Possibilities for Reduction of Energy-Related Air Pollution in Serbia - Exploring Energy Scenarios
Fossil fuels and biomass account for almost 93% of the total primary energy supply in Serbia. Meeting the energy needs of consumers implies a transformation of the chemical energy of fuels through combustion processes to obtain heat that can be utilized as such, or further transformed into mechanical or electrical energy. These processes have an undeniable impact on air pollution, even in cases of biofuels or hydrogen combustion. Possibilities for air pollution reduction are identified, both on the supply ...Marija Živković, Boban Pavlović, Dejan Ivezić, Aleksandar Mijatović. "Possibilities for Reduction of Energy-Related Air Pollution in Serbia - Exploring Energy Scenarios" in 9th International Conference Mining and Environmental Protection, 24.-27. May 2023, Sokobanja, Serbia, Belgrade, Serbia : University of Belgrade, Faculty of Mining and Geology (2023)
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Preliminary impact assessment of No2 emission from a heating plant on air pollution: case of Zemun, Serbia
The aim of this paper is to provide a preliminary evaluation of the impact caused by NO2 emissions from a heating plant on the local air quality. To model the spatial distribution of NO2 emissions from the heating plant, the AERMOD model was employed. The evaluation was conducted by analyzing and contrasting the simulated NO2 concentration from the heating plant with the overall NO2 concentration recorded at the nearest monitoring station over the entire heating season. The study focused ...Boban Pavlović, Uroš Pantelić, Marija Živković, Dejan Ivezić. "Preliminary impact assessment of No2 emission from a heating plant on air pollution: case of Zemun, Serbia" in Environmental Engineering and Management Journal (2023). https://doi.org/10.30638/eemj.2023.086
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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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Препреке декарбонизацији система даљинског грејања у Србији - ставови представника топлана
Производња топлоте у системима даљинског грејања у Републици Србији тренутно се заснива искључиво на процесима сагоревања, с доминантним уделом природног гаса из увоза. Иако су технологије за коришћење обновљивих и алтернативних извора енергије добро познате, њихова примена у системима даљинског грејања у Републици Србији још увек је занемарљива (око 2%). Како би се убрзао и олакшао процес транзиције ка обновљивим изворима енергије и разумело тренутно стање и перспектива, спроведена је анкета међу представницима топлана Србији. Циљ је био ...Марија Живковић, Дејан Ивезић, Бобан Павловић, Дејан Стојановић. "Препреке декарбонизацији система даљинског грејања у Србији - ставови представника топлана" in Стручно-научна конференција ТОПС 2024, Златибор, Јун 2024, Пословно удружење "Топлане Србије" (2024)
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Novi studijski profil na Rudarsko-geološkom fakultetu - Gasna tehnika
Ivezić Dejan, Danilović Dušan, Karović-Maričić Vesna, Živković Marija. "Novi studijski profil na Rudarsko-geološkom fakultetu - Gasna tehnika" in Tehnologija, informatika i obrazovanje za društvo učenja i znanja, Čačak:Tehnički fakultet Čačak (2011): 528-533
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Petrology of Plagiogranite from Sjenica, Dinaridic Ophiolite Belt (Southwestern Serbia)
Milovanović Dragan, Srećković Batoćanin Danica, Savić Marija, Popović Danica. "Petrology of Plagiogranite from Sjenica, Dinaridic Ophiolite Belt (Southwestern Serbia)" in Geologica Carpathica 2 no. 63, Bratislava: (2012): 97-106. https://doi.org/10.2478/v10096-012-0008-4
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Одређивање оптималне количине гаса који се утискује за рад гаслифт система
Даниловић Душан, Енори Елмаброук Елхаддад, Лековић Бранко, Живковић Марија. "Одређивање оптималне количине гаса који се утискује за рад гаслифт система" in Техника no. 5, Beograd: Савез инжењера и техничара (2014): 781-785
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Jeleč grad- još nepriznati objekat geonasleđa
Остаци средњовековног града Јелеча на једном од врхова планине Рогозне (1262 m), по неким веровањима представљаju купу угашеног вулкана. Рогозна je позната по појавама скарновске Cu–Au минерализације, а трагови рударске активности и важних путева још од античких времена и даље постоје у непосредној околини. О томе сведочи и османски назив за Рогозну: Gümüş Dağ (Сребрна планина). Време изградње Јелеча је непознато. Постоје индиције да је постојао још у 6. веку, али се помиње први пут средином 12. века. Поуздан податак ...Marija Radisavljević, Danica Srećković Batoćanin, Vladan Vidosavljević, Irena Kajtez. "Jeleč grad- još nepriznati objekat geonasleđa" in Zbornik apstrakata, 212. 18. Kongres geologa Srbije "Geologija rešava probleme", Divčibare, 01-04 jun 2022, Srpsko geološko društvo (2022)
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Advantages and challenges in presenting mathematical content using EDX platform
... using EDX platform Marija Radojičić, Ivan Obradović, Ranka Stanković, Olivera Kitanović, Roberto Linzalone Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Advantages and challenges in presenting mathematical content using EDX platform | Marija Radojičić, Ivan ...
... (eLearning-2016), 29 – 30 September 2016, Belgrade, Serbia ADVANTAGES AND CHALLENGES IN PRESENTING MATHEMATICAL CONTENT USING EDX PLATFORM MARIJA RADOJIČIĆ University of Belgrade, Faculty of Mining and Geology, marija.radojicic@rgf.bg.ac.rs IVAN OBRADOVIĆ University of Belgrade, Faculty ...Marija Radojičić, Ivan Obradović, Ranka Stanković, Olivera Kitanović, Roberto Linzalone. "Advantages and challenges in presenting mathematical content using EDX platform" in The Seventh International Conference on e-Learning (eLearning-2016), Belgrade : Metropolitan University (2016)
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Long-Term Planning Methodology for Improving Wood Biomass utilization
Vukašinović V., Gordić D., Živković Marija, Končalović D., Živković D.. "Long-Term Planning Methodology for Improving Wood Biomass utilization" in 3rd South East European conference on sustainable development of energy, water and environment systems (2018): 66
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Утицај састава биогаса на емисију полутана микротурбине са пилот гориоником
Живковић Марија, Аџић Мирољуб, Ивезић Дејан, Даниловић Душан, Миливојевић Саша. "Утицај састава биогаса на емисију полутана микротурбине са пилот гориоником" in Савремена пољопривредна техника no. 2, Novi Sad:Nacionalno naučno društvo za poljoprivrednu tehniku (2011): 245-251