Претрага
426 items
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Izdvajanje vode iz prirodnog gasa
Dejan Nedeljkov (2024)U radu je istaknuto važnost prirodnog gasa kao vitalna komponenta svetske energetike.Spada u najsigurnije,najčistije i najkorisnije fosilno gorivo. Sama pojava vode u vidu vlage u gasu je pokazatelj lošeg kvaliteta gasa. parametri koji mogu dovesti do lošeg kvaliteta prirodnog gasa kao pokazatelj je Wobbe index.U okviru istraživanja u master radu glavni problem funkcionisanja na KPG Paliću predstavlja vlaga u gasu,takođe se može zaključiti da kvalitet gasa zavisi od Wobbe indeksa odnosno, što je Wobbe veći, čistiji je gas, ili ...... aeaaeataakee 44 7 ZAKLJUČAK a a aaa iii a iii a naaniaanaannkaı 49 LITERATURA .. aeeaaaaeaaaaaaaaa a aaaaaaaaaaateot 50 1. UVOD Plin ili gas, dve reči istog pojma sa kojima se susrećemo u zavisnosti od porekla literature ili izvedenih reči koje se upotrebljavaju u gasnoj tehnici. Gas je ustvari ...
... bolji kvalitet gasa. Sve dok se ovo ne ugradi KPG Palić ne može da ostvari standarde koje očekuje od njih firma kojoj se isporučuje gas. 49 LITERATURA [1] Arnold, K., Stewart M.,Surface Production Operations, Design of Gas Handling Systems and Facilities Burlington Elsevier, 1999.godine [ ...Dejan Nedeljkov . Izdvajanje vode iz prirodnog gasa, 2024
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Keyword Extraction from Parallel Abstracts of Scientific Publications
... abstracts from scientific articles from the domain of geology and mining including annotated keywords by the authors of articles. In the scientific literature, meth- ods were studied and compared in different languages: besides the most studied – English language [2,8,13,19,21,22,25,26] are Portuguese [3] ...Slobodan Beliga, Olivera Kitanović, Ranka Stanković, Sanda Martinčić-Ipšić . "Keyword Extraction from Parallel Abstracts of Scientific Publications" in Sematic Keyword-Based Search on Structured Data Sources - Third International KEYSTONE Conference, IKC 2017 Gdańsk, Poland, September 11–12, 2017 Revised Selected Papers and COST Action IC1302 Reports, Springer (2017)
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Arsenic in Tap Water of Serbia´s South Pannonian Basin and Arsenic Risk Assessment
Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)... geochemi- cal processes that take place in the aquifer. An anoxic state of groundwater increases arsenic mobility [14]. Based on a review of different literature sources, regions featuring high arsenic concentrations are generally associated with groundwater in geothermal areas or with low-temperature groundwater ...Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić. "Arsenic in Tap Water of Serbia´s South Pannonian Basin and Arsenic Risk Assessment" in Polish Journal of Environmental Studies (2012)
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Serbian NER&Beyond: The Archaic and the Modern Intertwinned
U ovom radu predstavljamo srpski književni korpus koji se razvija pod okriljem COST Akcije „Distant Reading for European Literary History” CA16204. Koristeći ovaj korpus romana napisanih pre više od jednog veka, razvili smo i učinili javno dostupnim Sistem za prepoznavanje imenovanih entiteta (NER) obučen da prepozna 7 različitih tipova imenovanih entiteta, sa konvolucionom neuronskom mrežom (CNN), koja ima F1 rezultat od ≈91% na test skupu podataka. Ovaj model je dalje ocenjen na posebnom skupu podataka za evaluaciju. Završavamo poređenje ...... of the University of Belgrade. Cvetana Krstev, Jelena Jaćimović, Branislava Šandrih, and Ranka Stanković. 2019. Ana- lysis of the first Serbian Literature Cor- pus of the Late 19th and Early 20th century with the TXM platform. In DH_BUDAPEST_2019, pages 36–37. Centre for Digital Humanities - Eötvös ...Branislava Šandrih Todorović, Cvetana Krstev, Ranka Stanković, Milica Ikonić Nešić. "Serbian NER&Beyond: The Archaic and the Modern Intertwinned" in Proceedings of the Conference Recent Advances in Natural Language Processing - Deep Learning for Natural Language Processing Methods and Applications, INCOMA Ltd. Shoumen, BULGARIA (2021). https://doi.org/10.26615/978-954-452-072-4_141
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High-resolution sequence stratigraphy of carbonates - theory and examples
Jelena Stefanović, Dejan Radivojević (2020)Циљ рада је да кроз теоријски аспект и примере примене представи секвенциону стратиграфију високе резолуције карбонатних седимената. У том смислу први део се односи на појам и значење високе резолуције у секвенционој стратиграфији. Од временских и просторних скала које одговарају сеизмичким профилима у последњих двадесет година метода је нашла примену на скалама које одговарају бушотинским подацима или изданцима. Као најпогоднији седименти за овај тип истраживања су се показали карбонати јер су осетљиви на еустатичке промене, а основе секвенционе стратиграфије ...... research of these sediments in our area would enable regional and local correlations and could serve for paleogeographic reconstructions. ЛИТЕРАТУРА – REFERENCES AISNER-WILLIAMS, R. & KERANS, C. 2020. Facies and sequence stratigraphic architecture of the Mural Limestone (Albian), Arizona: ...Jelena Stefanović, Dejan Radivojević. "High-resolution sequence stratigraphy of carbonates - theory and examples" in Zapisnici Srpskog geološkog društva za 2020. godinu, Srpsko geološko društvo (2020)
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Ostvarivanje dobiti pri uvođenju sistema agregatnih zamena na osnovnoj rudarskoj mehanizaciji površinskih kopova EPS
Jedan od osnovnih zadataka na površinskim kopovima uglja je ostvarivanje zadovoljavajućeg vremenskog i kapacitetnog iskorišćenja kontinualnih sistema. Da bi se to postiglo, neophodno je izvršiti izmene u postojećoj strategiji održavanja. Preduslov je uvođenje agregatne zamene vitalnih delova na rudarskim mašinama. Benefiti su višestruki. Očekivani rezultati ovakvog pristupa su: smanjenje zastoja i povećanje vremena rada; direktne materijalne uštede; bolja organizacija rada; racionalizaciju radioničkih i magacinskih kapaciteta; povećanje vrednosti mašina. Da bi se uvela agregatna zamena neophodne su investicije za nabavku ...Predrag Jovančić, Ignjatović Dragan, Đenadić Stevan. "Ostvarivanje dobiti pri uvođenju sistema agregatnih zamena na osnovnoj rudarskoj mehanizaciji površinskih kopova EPS" in X Međunarodna konferencija UGALJ, Zlatibor, Srbija, 13-16. Oktobar 2021., Jugoslovenski komitet za površinsku eksploataciju (2021)
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Classification of mining waste landfills according to legislation in Serbia
... prema zakonskoj regulativi, kako se ne bi dešavala loša sprovođenja odredbi akata i kako bi se pospešila praksa bezbednog upravljanja otpadom. LITERATURA [1] Classification of mining waste facilities, Final Report, 2007, European Commission, DG Envi-ro- nment, https://-ec.europa.eu/-environme ...Dragana Nišić, Uroš Pantelić, Nikoleta Aleksić, Neda Nišić. "Classification of mining waste landfills according to legislation in Serbia" in Tehnika, Centre for Evaluation in Education and Science (CEON/CEES) (2021). https://doi.org/10.5937/tehnika2105575N
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Mechanosynthesis and structural characterization of nanocrystalline Ce1–Y O2– (x=0.1–0.35) solid solutions
Martin Fabián, Bratislav Antić, Vladimír Girman, Milica Vučinić-Vasić, Aleksandar Kremenović, Shigeru Suzuki, Horst Hahn, Vladimír Šepelák (2015)A series of nanostructuredfluorite-type Ce1–xYxO2–δ (0rxr0.35) solid solutions, prepared via highenergy milling of the CeO2/Y2O3mixtures, are investigated by XRD, HR-TEM, EDS and Raman spectroscopy. For thefirst time, complementary information on both the long-range and short-range structural features of mechanosynthesized Ce1–xYxO2–δ, obtained by Rietveld analysis of XRD data and Raman spectroscopy, is provided. The lattice parameters of the as-prepared solid solutions decrease with increasing yttrium content. Rietveld refinements of the XRD data reveal increase in microstrains in the host ceria ...Martin Fabián, Bratislav Antić, Vladimír Girman, Milica Vučinić-Vasić, Aleksandar Kremenović, Shigeru Suzuki, Horst Hahn, Vladimír Šepelák. "Mechanosynthesis and structural characterization of nanocrystalline Ce1–Y O2– (x=0.1–0.35) solid solutions" in Journal of Solid State Chemistry, Elsevier BV (2015). https://doi.org/10.1016/j.jssc.2015.06.027
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Integrative GHG Assessment in Oil and Gas Industry
Reducing greenhouse gas emissions is one of the main targets of national strategies in European countries. As a main contributor to emissions, the energy sector is recognized as the most promising to apply measures and actions aimed to decrease GHG emissions. The Oil and Gas industry as a significant contributor to global greenhouse gas emissions is facing a growing need for estimating, mitigating, and reducing the impact of their operations on the atmosphere to stay competitive in a newly ...... reduce their GHG emissions and minimize thcir environmental impact, while also benefiting from incrcased energy efficicncy and cost savings. LITERATURA/REFERENCES 1} IEA,Key World Energy Statistics 2021. https://iea.blob.core.windows.net/assets/52f66a88-0b63-4ad2-94a5- 29d36e864b82/KeyWorld ...Aleksandar Mirković, Marija Živković, Stevan Đenadić, Darja Lubarda, Chinedu Anyanwa. "Integrative GHG Assessment in Oil and Gas Industry" in Energija, ekonomija, ekologija (2023). https://doi.org/10.46793/EEE23-1.51M
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Definition of criteria and alternatives for choosing the optimal mining method deposits when applying multi: Criteria optimization, Belgrade, June 2024
Sanja Bajić, Dragoljub Bajić, Branko Gluščević, Radmila Gaćina, Josip Išek. "Definition of criteria and alternatives for choosing the optimal mining method deposits when applying multi: Criteria optimization, Belgrade, June 2024" in Podzemni radovi, Beograd, jun 2024, Centre for Evaluation in Education and Science (CEON/CEES) (2024). https://doi.org/10.5937/podrad2444071B
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Underground loading-haulage equipment selection with application of topsis method with different weighting methods of criteria
The choice of adequate mining machines is one of the most complex problems in the underground exploitation of mineral raw materials. The weight of such a decision is reflected in the high prices of these machines and the occurrence of even greater costs during their use if their choice was wrongly conceived. There are numerous examples from practice in which such decisions were made solely on the basis of comparing the prices of machines, without considering any of the ...utovarno-transportna mehanizacija, izbor, TOPSIS, entropija, standardna devijacija, težina kriterijumaVladimir Krivošić, Luka Crnogorac, Rade Tokalić. "Underground loading-haulage equipment selection with application of topsis method with different weighting methods of criteria" in Underground mining engineering, University of Belgrade - Faculty of Mining and Geology (2024)
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Analiza obrazovnog sistema i kadrovskog potencijala Republike Srbije u oblasti rudarstva i geologije
Adekvatno postavljen i kontinualno unapređivan sistem obrazovanja predstavlja jasan preduslov za razvoj pojedinca, društva i države u celini. Sistem obrazovanja u Republici Srbiji davno je postavljen, a reforme nisu do kraja sprovedene. Posebno je to izraženo u visokom obrazovanju gde reforma po bolonjskom sistemu nije do kraja sprovedena ili je negativno zloupotrebljena. Trenutno je sistem obrazovanja je pod velikim pritiskom usled oštrih zahteva tržišta rada. U ovom radu je izvršena analiza obrazovnog sistema u oblasti rudarstva i geologije u ...... posla odnosno stručnog razvoja u rudarstvu i geologiji. Jedini način da se takva slika promeni je obrazovanjem i edukacijom dece i odraslih. Literatura [1] Nikolić, Lj., Mojašević, A. (2016). Obrazovanje - trošak ili investicija za državu. Zbornik radova Pravnog fakulteta u Nišu, 55(73). pp. 201-2018 ...Dragan Ignjatović, Stevan Đenadić, Predrag Jovančić, Filip Miletić, Jovana Mitrović . "Analiza obrazovnog sistema i kadrovskog potencijala Republike Srbije u oblasti rudarstva i geologije" in XVI Međunarodna rudarska konferencija OMC 2024, Jugoslovenski komitet za površinsku eksploataciju (2024)
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Concepts for Improving Machine Learning Based Landslide Assessment
Miloš Marjanović, Mileva Samardžić Petrović, Biljana Abolmasov, Uroš Đurić. "Concepts for Improving Machine Learning Based Landslide Assessment" in Natural Hazards GIS-based Spatial Modeling Using Data Mining Techniques, Advances in Natural and Technological Hazards Research, volume 48, Springer Nature Switzerland AG 2019 (2019). https://doi.org/10.1007/978-3-319-73383-8_2
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Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal
Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović (2018)glukoza, fruktoza, аktivni ugalj, hidrotermalni tretman, aktivacija hidroksida, teški metali, metilen plavo... 6 of 21 preparation of a 1 mol/dm3 solution of glucose or fructose, their crystalline structures were destroyed. Then, it is also known from the literature [47,48] that because of HTC treatment, an amorphous network with a high content of carbon is obtained with increased surface functional properties ...
... crystallinity of the sample. The increase of its value corresponds to decrease of the crystallinity of the sample and vice versa [47,54]. From the literature [55] the ID/IG value lower than 0.25 indicated perfect crystallinity with a low degree of crystal defects. For samples investigated in this study ...Sanja Krstić, Milan Kragović, Maja Pagnacco, Vladimir Dodevski, Branka Kaluđerović, Miloš Momčilović, Ivica Ristović, Marija Stojmenović . "Hydrothermal Synthesized and Alkaline Activated Carbons Prepared from Glucose and Fructose—Detailed Characterization and Testing in Heavy Metals and Methylene Blue Removal" in Minerals, MDPI (2018)
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Application of geophysical and multispectral imagery data for predictive mapping of a complex geo-tectonic unit: a case study of the East Vardar Ophiolite Zone, North-Macedonia
... scenarios, a smaller amount of data can be advantageous. Comparing the RF and KNN algorithms produced results consistent with the existing literature, the RF algo- rithm produced superior results based on the evaluation 1641 metrics of both algorithms. The KNN model, utilizing dataset C ...
... models and enriched the analysis. Moreover, the research was complemented by the invaluable expertise of Igor Peshevski, who conducted an in-depth literature review focus- ing on geological and tectonic aspects, contributing to a more compre- hensive understanding of the context. The collaborative ...Filip Arnaut, Dragana Đurić, Uroš Đurić, Mileva Samardžić-Petrović, Igor Peshevski. "Application of geophysical and multispectral imagery data for predictive mapping of a complex geo-tectonic unit: a case study of the East Vardar Ophiolite Zone, North-Macedonia" in Earth Science Informatics, Springer Science and Business Media LLC (2024). https://doi.org/10.1007/s12145-024-01243-4
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Određivanje parametara smičuće čvrstoće tla primenom statističke metode
Božidar Rudnjanin (2024)Određivanje parametara smičuće čvrstoće tla je od ključne važnosti u geotehničkom inženjerstvu jer utiče na stabilnost i nosivost raznih građevinskih konstrukcija. Ovaj master rad obrađuje temu primene deskriptivne statistike za analizu parametara smičuće čvrstoće tla,čime se obezbeđuje osnov za donošenje odluka o planiranju i izvođenju građevinskih projekata.U prvom delu rada, prikupljaju se relevantni podaci o smičućoj čvrstoći tla iz prethodnih laboratorijskih ispitivanja za trasu buduće brze saobraćajnice Novi Sad - Ruma.Ti podaci uključuju vrednosti smičuće čvrstoće i različite faktore ...... 3.3.2 Određivanje kohezije za niskoplastičnu glinu.........c..aaaaaaaaaaaanacnne 36 ZAKLJUČAK al a naaa a aaiaiaaaeaaa iii iaaiiaaiaaat 41 LITERATURA . aaaaaaaaaaaaaaaaaaavaaaaogaaagatvovt 42 1 UVOD Smičuća čvrstoća tla predstavlja ključan geotehnički parametar koji ima značajan uticaj na ...
... dobijeni rezultati koji se odnose na kozehiju poklapaju za visokoplastičnu glinu, a u slučaju niskoplastične gline postoje manje razlike. 41 5 LITERATURA 13. 14. Baecher G.B. i Christian J.T. (2003): Reliability and statistics in geotechnical engineering, Wiley, Chichester. Berisavljević ...Božidar Rudnjanin. Određivanje parametara smičuće čvrstoće tla primenom statističke metode, 2024
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Praktikum za vežbe iz Informatike 1
Ranka Stanković, Ivan Obradović, Olivera Kitanović, Mirjana Banković. Praktikum za vežbe iz Informatike 1, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet, 2014
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Arsenic in tape waters of the south Pannonian basin (Serbia) and arsenic risk assessment
Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)... geochemi- cal processes that take place in the aquifer. An anoxic state of groundwater increases arsenic mobility [14]. Based on a review of different literature sources, regions featuring high arsenic concentrations are generally associated with groundwater in geothermal areas or with low-temperature groundwater ...Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić. "Arsenic in tape waters of the south Pannonian basin (Serbia) and arsenic risk assessment" in Polish Journal of Enivronmental Studies 21 no. 6, Olsztyn, Poland : Polish Journal of Enivronmental Studies (2012): 1783-1790
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The use of biological markers in determination of origin and type of organic matter in the Tisza river sediments
Snežana Štrbac, Gordana Gajica, Aleksandra Šajnović, Nebojša Vasić, Ksenija Stojanović, Branimir Jovančićević (2013)The objective of the study was to determine the origin and type of organic matter (OM) of the Tisza recent sediments along the distance of 153 km through the territory of Serbia. For this purpose group organic-geochemical parameters and biomarker compositions were used. All samples contain approximately same amount of OM, which was deposited under uniform, slightly reducing conditions. Based on the distribution of n-alkanes, the origin and type of OM could not be precisely estimated. However, n-alkane patterns ...... m/z = 71 (n-alka- nes and isoprenoids), m/z = 191 (terpanes) and m/z = 217 (steranes). The individual peaks were identified by comparison with literature data12 and based on the total mass spectra (library: NIST5a). The biomarker parameters were calculated from the GC–MS chromato- gram peak areas ...Snežana Štrbac, Gordana Gajica, Aleksandra Šajnović, Nebojša Vasić, Ksenija Stojanović, Branimir Jovančićević. "The use of biological markers in determination of origin and type of organic matter in the Tisza river sediments" in Journal of Serbian Chemical Society, Beograd : Srpsko hemijsko društvo (2013). https://doi.org/10.2298/JSC130614087S
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Building learning capacity by blending different sources of knowledge
... concept and establishing a continuum of knowledge acquisition represents a challenge that needs new approaches and tools to be developed. Available literature lacks examples of effective solutions offered to this challenge, especially those using new learning technologies, as the one presented in this ...Ivan Obradović, Ranka Stanković, Olivera Kitanović, Dalibor Vorkapić. "Building learning capacity by blending different sources of knowledge" in International Journal of Learning and Intellectual Capital (2016). https://doi.org/10.1504/IJLIC.2016.075698