Претрага

Упит dcterms_subject_txt:емисија гасова

389 items

  • Prikaz sanacije flotacijskog jalovišta Veliki Majdan nakon akcidenta

    Kostović Milena, Vlajić Dijana, Kostović Nebojša, Mitić Saša (2012)

  • P-T analiza uglja RB Kolubara

    Rada Vitomir (2024)
    Rudarski basen Kolubara predstavlja jedno od najvažnijih ležišta lignita u Republici Srbiji i ključni je faktor u snabdevanju zemlje energijom. Kvalitet uglja iz ovog basena direktno utiče na efikasnost termoelektrana i zadovoljenje energetskih potreba. U ovom radu, opisan je značaj tehničke i elementarne analiza uglja kako bi se utvrdili fizičko-hemijski parametri uglja iz Rudarskog basena Kolubara. U drugom delu rada dat je opis P-T analize uglja i njen značaj za ocenu mogućnosti čišćenja uglja. Takođe, dati su i rezultati ...
    Rudarski basen Kolubara, pliva tona analiza, lignit, kvalitet uglja, energetska efikasnost
    ... posebno sadržaja sumpora i pepela. Sadržaj sumpora u uglju je važan parametar zbog uticaja na emisiju štetnih gasova pri sagorevanju. Ugalj sa niskim sadržajem sumpora tehnologija za smanjenje emisije sumpor-dioksida (Stefanović et al., 2011). Sadržaj 4 pepela u uglju takođe utiče na njegovu ...
    ... Sagorevanje uglja sa visokim sadržajem sumpora dovodi do emisije sumpor- dioksida, koji može doprineti zagađenju vazduha i pojavu kiselih kiša. Ugalj sa niskim 64 sadržajem sumpora je stoga poželjniji u cilju smanjenja emisije štetnih gasova (Malešević et al., 2015). Toplotna vrednost uglja, ...
    ... istraživanje tehnologija za smanjenje emisije štetnih gasova, kao što su sistemi za odsumporavanje i denitrifikaciju, tehnologije za hvatanje i skladištenje ugljen-dioksida, kao i razvoj naprednih tehnologija za sagorevanje i gasifikaciju uglja sa smanjenom emisijom štetnih materija (Milanović et al ...

  • Composition of organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in East Herzegovina (External Dinarides, Bosnia and Herzegovina)

    Nikoleta Aleksić, Aleksandar Kostić, Miloš Radonjić (2021)
    This paper presents the first data on the organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in the East Herzegovina region of the External Dinarides. Representative, organic-rich samples from outcropping sedimentary rocks of different ages in the area (Triassic to Neogene) were selected and analysed. The organic matter was studied by Rock-Eval pyrolysis and under the microscope in reflected non-polarized light and incident blue light. The results obtained show the presence of different types of organic ...
    nafta i gas, Rock-Eval, refleksija vitrinita, maceral, termička zrelost

  • Applicability of calculated vitrininte reflectance for maturity assessment of organic matter of source rocks from hyperthermal basin (Banat Depression, Serbia)

    Stojanović Ksenija, Kostić Aleksandar, Mrkić Sanja (2012)

  • Exploration, production pace faster in Serbia, Bosnia and Herzegovina

    Karović-Maričić Vesna, Danilović Dušan, Batalović Veselin, Leković Branko (2012)

  • Lowest possible flow temp. offers savings vs. pour point

    Danilović Dušan, Karović-Maričić Vesna, Ivezić Dejan, Batalović Veselin, Živković Marija, Crnogorac Miroslav (2013)

  • 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

  • Proizvodnja električne energije iz elektrana na ugalј i prateća emisija CO2: komparacija EU-27 i Srbije

    Aleksandar Madžarević, Predrag Jovančić, Stevan Đenadić, Filip Miletić, Miroslav Crnogorac (2023)
    Velike elektrane su i u trećoj deceniji 21. veka i dalјe odgovorne za više od polovine proizvodnje električne energije u Evropi. U svom radu pretežno koriste fosilna goriva, što rezultira emisijom zagađujućih materija u vazduh. Stoga, zahvalјujući direktivama EU, kao i poremećajima na tržištu, emisije uglјen-dioksida iz velikih postrojenja za sagorevanje u EU-27 intenzivno se smanjuju u poslednje dve decenije. Iako je upotreba uglјa, posebno u zemlјama Evropske unije, u stalnom padu, ima prostora za dodatno smanjenje. Autori su ...
    CO2, emisija, ugalј, termoelektrane, EU-27, Srbija

  • Praktikum iz Tehnologije materijala

    Suzana Lutovac, Miloš Gligorić, Luka Crnogorac (2023)
    materijali u rudarstvu

  • Thermal evolution of the organic matter and oil generation in the Serbian part of the Pannonian Basin.

    Stojanović Ksenija, Kostić Aleksandar, Nytoft Hans Peter, Stojadinović Sanja (2015)

  • Managing mining project documentation using human language technology

    Aleksandra Tomašević, Ranka Stanković, Miloš Utvić, Ivan Obradović, Božo Kolonja (2018)
    Purpose: This paper aims to develop a system, which would enable efficient management and exploitation of documentation in electronic form, related to mining projects, with information retrieval and information extraction (IE) features, using various language resources and natural language processing. Design/methodology/approach: The system is designed to integrate textual, lexical, semantic and terminological resources, enabling advanced document search and extraction of information. These resources are integrated with a set of Web services and applications, for different user profiles and use-cases. Findings: The ...
    Digital libraries, Information retrieval, Data mining, Human language technologies, Project documentation
    ... corpus of mining texts are 80 occurrences. Some of the collocations obtained are anemometar gasa (gas anemometer), deponijski gas (landfill gas), fluidizaciju lignite (lignite fluidization), injektiranja gasa (gas injection), kop boksita (bauxite mine), otkopavanje lignita (digging lignite), poduzorak šljunka ...
    ... Shaft, hallway, rise heading, dip heading þMinProcess Crushing, flotation, concentration þPetroleum Oil, gas, well, pipeline Semantic þMinStatus Active mine, inactive mine, closed mine þOre Coal, oil, gas þActivity Mine design, mineral resource exploitation, mine ventilation þObject Shaft, crushing plant ...
    ... areas within the mining domain (open- pit exploitation, underground exploitation, the preparation of mineral resources and the exploitation of oil and gas), which differ to such an extent that they justify the introduction of additional markers. Sub-domain markers would be associated to a domain marker ...

  • Multiphase evolution of fluids in the Rudnik hydrothermal-skarn deposit (Serbia): new constraints from study of quartz-hosted fluid inclusions

    Stefan Petrović, Ronald J. Bakker, Vladica Cvetković, Rade Jelenković (2024)
    This study presents and discusses first detailed petrographic, microthermometric and Raman spectroscopic data from quartzhosted fluid inclusions at Rudnik Zn-Pb-Cu-Ag skarn deposit (Serbia) and combines them with the information on skarnand ore paragenesis. Three periods in the metamorphic-hydrothermal history of the deposit are recognized: 1) the pre-ore prograde skarn period when garnet-clinopyroxene skarns formed, 2) the syn-ore period that encompasses a retrograde stage marked by epidote and zoisite and a quartz-sulfide stage characterized by quartz, pyrrhotite, sphalerite, galena and ...
    skarnovska ležišta, rudnik, fludine inkluzije, srpska kenozojska magmatska provincija, Zapadno Tetisjki metalogenetski pojas
    ... water, gas mixtures and salt. Only few of these equations are available (e.g. Bakker 1997). For example, a homogeneous H»O-rich fluid (90 mol% H,O, 4.5 mol% CO, 0.5 mol% CHu, 5 mol% NaCI) may unmix at 350 *C and 62 MPa by producing vapour bubbles that are relatively enriched in gas-mixtures ...
    ... NaCI. On further cooling, the liquid phase will become enriched in NaCI and depleted in gas components, whereas the oppo- site occurs in the vapour phase. The relative proportions of CO, and CHo, in the gas mixture evolve in distinct manners, as the vapour phase is relatively enriched in CH, and ...
    ... found in quartz cores and homogenized at 380—390 "C (mode) and 370—380 "C (mode), respectively. Group A FI consists of H,O-NaCI liquids and CO,-CH, gas mixtures and likely represents the original fluid composition, whereas Group B FI records dilution of the original fluid at constant temperature, with ...

  • Техничка дијагностика

    Предраг Јованчић (2020)
    техничка дијагностика, технички системи

  • Double traveling valve increases rod-pump efficiency

    Miloš Petrović, Bojan Martinović, Milica Ješić, Miroslav Crnogorac (2023)
    Traditional sucker rod pumps (SRP) use a single traveling valve, but recent double traveling valve innovations have improved SRP performance and efficiency in field applications with double traveling valves installed in pumps with top mechanical seating. The valves sealed better and produced similar fluid volumes compared with the previous single-valve pumps. They also enabled a reduction in pump diameter and optimized usage of surface equipment. Overall, the double travel valve SRPs produced stable production rates and annual production targets.
    дубинска пумпа на клипним шипкама, производња нафте, ефикасност

  • Хидрогеолошки услови формирања угљокиселих минералних вода Србије

    Goran H. Marinković (2014-06-17)
    Докторском дисертацијом разматране су хидрогеолошке структуре угљокиселихминералних вода литосфере Србије. При истраживањима узети су у обзир:резултати испитивања старости, порекла и физичко – хемијских карактеристикаугљокиселих вода, геотемпературни услови и геотектонска грађа литосфере,резултати изотопских испитивања на δ13С у карбонатима хидротермалнихлежишта, резултати истраживања минималних температура трансформацијекарбоната и структурно - хидрогеолошки услови у областима дренирањаугљокиселих вода.Резултати показују да је угљеник угљокиселих вода пореклом из карбонатахидротермалне фазе младих магматских процеса, а да су матични супстратиовог елемента карбонати мезозојских и палеозојских седиментних иметаморфних стена. Угљендиоксид ...
    литосфера Србије, угљокиселе воде, генеза, супстрати, рејони,хидрогеолошке структуре, дубина залегања, геолошки услови, типови,потенцијал.

  • Introduction to special section: Characterization of hydrocarbon and geothermal resource potential and carbon sequestration opportunities of the Pannonian Basin

    Balázs Németh, Gábor Tari, Gábor Bada, Dejan Radivojević, Bruno Tomljenovic, Csaba Krézsek (2018)
    нафтна геологија, геотермална енергија, Панонски басен
    ... inter- pretation of this data, integrated with nearby hydrocar- bon well results, vintage industry seismic data, and observations of lake-floor gas seeps provide new in- sights into the regional-scale evolution of the northwest Pannonian Basin. Hovarth et al. present an overview of the regional ...
    ... a lacustrine tur- bidite sandstone reservoir. These sandstone reservoirs are part of a multilevel field system that contains large CO2 and mixed gas accumulations in the Danube Basin in northwest Hungary. Cvetković et al. select a few hydrocarbon accumulations within the Drava depres- sion of ...

  • A comparative study of the molecular and isotopic composition of biomarkers in immature oil shale (Aleksinac deposit, Serbia) and its liquid pyrolysis products (open and closed systems)

    Gordana Gajica, Aleksandra Šajnović, Ksenija Stojanović, Jan Schwarzbauer, Aleksandar Kostić, Branimir Jovančićević (2021)
    The molecular and isotopic composition of biomarkers in initial bitumen isolated from immature (0.41% Rr) oil shale samples (Aleksinac deposit) and liquid products obtained by pyrolysis in open (OS) and closed (CS) systems are studied. The influence of pyrolysis type and variations of kerogen type on biomarkers composition and their isotopic signatures in liquid products is determined. The applicability of pyrolysis type, numerous biomarkers and carbon isotopic compositions (δ13C) of n-alkanes in liquid pyrolysates is established. Pyrolysis experiments were ...
    Uljni šejl, Aleksinac, organska supstanca, otvoreni i zatvoreni sistem pirolize, biomarkeri, izotopski sastav ugljjenika
    ... pyrolysates was performed using a gas chromatography-isotope ratio monitoring-mass spectrometry system (GC-irmMS). A gas chromatograph 6980A was linked to a Finnigan Delta Plus XL mass spectrometer equipped with a GCC III combustion interface (Fisons Instruments). Gas chromato- graphic separation was ...
    ... at 3 ◦C min−1 to 300 ◦C. The helium carrier gas velocity was set to 35 cm s−1. The oxidation oven equipped with a CuO/ NiO/Pt-catalyst was set at 940 ◦C. Each isotope ratio determination was run in triplicate. The carbon isotope ratio of the reference gas (carbon dioxide) was calibrated with a certified ...
    ... vol. 2. Cambridge University Press, Cambridge. Philp, R.P., 1987. A review of biomarkers in kerogens as determined by pyrolysis-gas chromatography and pyrolysis-gas chromatography-mass spectrometry. J. Anal. Appl. Pyrol. 11, 93–108. G. Gajica et al. ...

  • Основе енергетике

    Марија Живковић, Дејан Ивезић (2019)
    енергетика

  • Definition of groundwater genesis and circulation conditions of the complex hydrogeological karst system Mlava–Belosavac–Belosavac-2 (eastern Serbia)

    Ljiljana Vasić, Saša Milanović, Zoran Stevanović, Laszlo Palcsu (2020)
    Geochemistry and Petrology

  • Semantic Textual Similarity of Courses Based on Text Embeddings

    Olivera Kitanović, Aleksandra Tomašević, Mihailo Škorić, Ranka Stanković, Ljiljana Kolonja (2024)
    This paper explores the application of textual embeddings to measure semantic similarity between educational courses’ curriculums, aiming to enhance the effectiveness of the next faculty accreditation. Leveraging state-of-the-art natural language processing techniques, we employ pre-trained embeddings to capture the semantic meaning of course descriptions. Our methodology involves transforming course curriculum texts into high-dimensional vector representations, enabling efficient and meaningful comparisons. We evaluate the proposed approach on a diverse dataset of course descriptions, employing established benchmarks for semantic textual similarity ...
    ... (e.g. oil, gas, fluid, equipment, design, etc.), but the context is different - different stages of the technological process of oil and gas exploitation and processing are described. The first course introduces students to *... The technology of collection and preparation of oil, gas and reservoir ...
    ... upoznavanje _ student kurs cilj postupak, redmet razvojooblast P parametay j princip znanje elemćnt knnšmmclxež·š kop proračun, ište N gas bušotina a karakteristika sistem _ nafta transport - sirovina mašina iZbor Fig. 2. Tree-cloud with 100 nouns in text generated from course description ...
    ... jenmaHMue ocyxBamajy mepMwHonorMjy, neđMHwuMje M McmopMjam neoMHQopMarMKe. IHomoM ce MsyuaBajy npMMeHa M Monenipake npocropHMx nomamaka, ocHoBe npocmopHMx Gasa nonamaka M npaBneme ynMma Han TMC GasaMa, kao M KaprorpaQcko npencranmame nonamaka. IoToM cnene OcHoBe PeocrarMCTMuKOP npMcmyna M BapMorpaMM, MMxoBa ...