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Упит dcterms_creator_txt:Wang Yu

90 items

  • Application of Lignite Combustion Waste Slag Generated in Heating Plants as a Partial Replacement for Cement. Part II: Physical–Mechanical and Physical–Chemical Characterization of Mortar and Concrete

    Milan Kragović, Nenad Ristić , Jelena Gulicovski, Andrijana Nedeljković, Snežana Pašalić, Ivica Ristović, Marija Stojmenović (2021)
    sagorevanje lignita, otpadna šljaka, zamena cementa, proizvodnja maltera i betona, fizičko-mehanička i fizičko-hemijska karakterizacija
    ... Institute. Available online: https://www.americangeosciences.org/critical-issues/faq/what-are-the- dierent-types-of-coal (accessed on 30 May 2021). 5. Yu, J.L.; Tahmasebi, A.; Han, Y.N.; Yin, F.K.; Li, X.C. A review on water in low rank coals: The existence, interaction with coal structure and effects ...
    ... Carbonation of calcium sulfoaluminate cement blended with blast furnace slag. Cem. Concr. Compos 2021, 118, 103918. [CrossRef] 25. Liao, Y.; Jiang, G.; Wang, K.; Al Qunaynah, S.; Yuan, W. Effect of steel slag on the hydration and strength development of calcium sulfoalumi-nate cement. Constr. Build. Mater ...
    ... and Raman studies of the stabilization beta-Ca2SiO4. Ceramurgia international 1978, 4, 75. [CrossRef] 34. Zhang, G.; Li, Z.; Zhang, L.; Shang, Y.; Wang, H. Experimental research on drying control condition with minimal effect on concrete strength. Constr. Build. Mater 2017, 135, 194–202. [CrossRef] ...

  • Advancing Sentiment Analysis in Serbian Literature: A Zero and Few-Shot Learning Approach Using the Mistral Model

    Milica Ikonić Nešić, Saša Petalinkar, Mihailo Škorić, Ranka Stanković, Biljana Rujević (2024)
    Ova studija predstavlja analizu sentimenta srpskih starih romana iz perioda 1840-1920, koristeći veliki jezički model (LLM) Mistral za tehniku učenja sa zasnovani na takozvanim "zero" i "few-shot" pokušajima. Glavni pristup uvodi inovacije osmišljavanjem istraživačkih upita (promptova) uključuju tekst sa uputstvom za klasifikaciju bez primera i na osnovu nekoliko primera, omogućavajući jezičkom modelu da klasifikuje osećanja u pozitivne, negativne ili objektivne kategorije. Ova metodologija ima za cilj da pojednostavi analizu osećanja ograničavanjem odgovora, čime se povećava preciznost ...
    zero-shot, few-shot, sentiment, Serbian, Mistral model

  • 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 ...
    prirodni gas, separatori, separacija, grejači, čileri, tačka rose, Wobbe indeks
    ... da ide u spremište visokog pritiska (8), industrijsku redukcionu stanicu (9) i područnu redukcionu stanicu (10). http://www.gasruma.rs/index.php/yu/prirodni-gas-m/osnovni-pojmovi-gasne-tehnike-m 26 Iz industrijske redukcione stanice ide u industrijsku potrošnju (11), a iz područne najpre u ...
    ... dokumentacija NIS – Jugopetrol – po JPN. [32] http://www.vrbasgas.com/prirodni-gas/osnovni-pojmovi-gasne-tehnike [33] http://www.gasruma.rs/index.php/yu/prirodni-gas-m/osnovni-pojmovi-gasne-tehnike-m [34] https://ec.europa.eu/info/sites/info/files/cen_-_gas_quality.pdf [35] http://smeits.rs/inclu ...

  • Prioritization of strategic measures for strengthening the security of supply of the Serbian natural gas sector

    Boban Pavlović, Dejan Ivezić, Marija Živković (2020)
    To strengthen the security of supply of the Serbian gas sector, it is necessary to analyze the impact of planned strategic measures. The analysis involves the identification of the most influential threats to the security of natural gas supply and prioritization of the strategic measures for overcoming the consequences of threats. The proposed methodology is based on Fuzzy Analytic Hierarchy Process. The obtained weights for the identified threats and strategic measures are formed according to experts' judgments. The results ...
    Sigurnost snabdevanja, Donošenje odluka, Snabdevanje prirodnim gasom, Fazi AHP, Energetski indikatori

  • Comprehensive Profiling of Microbiologically Induced CaCO3 Precipitation by Ureolytic Bacillus Isolates from Alkaline Soils

    Olja Šovljanski, Lato Pezo, Jovana Stanojev, Branimir Bajac, Sabina Kovač, Elvira Tóth, Ivan Ristić, Ana Tomić, Aleksandra Ranitović, Dragoljub Cvetković, Siniša Markov (2021)
    MICP process, kinetic study, calcite, vaterite, MALDI-TOF identification, Bacillus licheniformis, Sporosarcina pasteurii
    ... expanded perlite encapsulated bacteria and growth media for self-healing concrete. Constr. Build. Mater. 2017, 160, 610–619. [CrossRef] 29. Xu, J.; Wang, X.; Wang, B. Biochemical process of ureolysis-based microbial CaCO3 precipitation and its application in self-healing concrete. Appl. Microbiol. Biotechnol ...
    ... ; Chen, Y. Crystallization of CaCO3 in aqueous solutions with extremely high concentrations of NaCl. Crystals 2019, 9, 647. [CrossRef] 59. Tang, H.; Yu, J.; Zhao, X. Controlled synthesis of crystalline calcium carbonate aggregates with unusual morphologies involving the phase transformation from amorphous ...

  • Photocatalytic Activity of the V2O5 Catalyst toward Selected Pharmaceuticals and Their Mixture: Influence of the Molecular Structure on the Efficiency of the Process

    Sanja J. Armaković, Aleksandra Jovanoski Kostić, Andrijana Bilić, Maria M. Savanović, Nataša Tomić, Aleksandar Kremenović, Maja Šćepanović, Mirjana Grujić-Brojčin, Jovana Ćirković, Stevan Armaković (2023)
    Due to the inability of conventional wastewater treatment procedures to remove organic pharmaceutical pollutants, active pharmaceutical components remain in wastewater and even reach tap water. In terms of pharmaceutical pollutants, the scientific community focuses on -blockers due to their extensive (over)usage and moderately high solubility. In this study, the photocatalytic activity of V2O5 was investigated through the degradation of nadolol (NAD), pindolol (PIN), metoprolol (MET), and their mixture under ultraviolet (UV) irradiation in water. For the preparation of V2O5, facile ...
    DFT analysis, metoprolol, nadolol, nanomaterial characterization, photocatalysis, pindolol, β-blocker
    ... ions in the Glatt Valley Watershed, Switzerland. Water Res. 2010, 44, 936–948. CrossRef] im, K.; Cho, E.; Choi, J.; Kim, H.; Jang, A.; Choi, Y.; Yu, J.-H.; Jung, S. Intermolecular complexation of low-molecular-weight succinoglycans directs solubility enhancement of pindolol. Carbohydr. Polym. 2014 ...
    ... activated sludge (CAS) and advanced membrane bioreactor (MBR) treatment. Water Res. 2009, 43, 831—841. CrossRef] Liu, H.; Chen, M.; Wei, D.; Ma, Y.; Wang, E; Zhang, Q.; Shi, J.; Zhang, H.; Peng, J.; Liu, G. Smart removal of dye pollutants via dark adsorption and light desorption at recyclable Bi)O>»COy ...
    ... Maaref, H. Thermal annealing, induced multiple phase in V/V»Os alternating, multilayer structure. Int. J. Mod. Phvys. B 2016, 30, 1650210. [CrossRef] Wang, Y.; Rosowski, E;; Schlogl, R.; Trunschke, A. Oxygen Exchange on Vanadium Pentoxide. J. Phys. Chem. C 2022, 126, 3443—3456. [CrossRef] ubelka, P ...

  • Natural two-dimensional pyrophyllite: Nanoscale lubricant, electrical insulator and easily-machinable material

    Borislav Vasić, Radoš Gajić, Ivana Milošević, Žarko Medić, Marina Blagojev, Marko Opačić, Aleksandar Kremenović, Dejan Lazić (2022)
    Pyrophyllite, with the chemical formula Al2Si4O10(OH)2, is a naturally occurring and abundant van der Waals mineral belonging to the group of phyllosilicates. It is very soft, layered crystal used for sculpting and an excellent electrical and thermal insulator aimed for the operation at high pressure and temperature. Here, for the first time, two-dimensional (2D) pyrophyllite obtained by both mechanical and liquid phase exfoliation is presented and investigated at the nanoscale. The layered structure provides low friction coefficient of around ...
    Atomic force microscopy, Insulating properties, Nanofriction and wear, Natural two dimensional materials, Phyllosilicates, Pyrophyllite

  • Stratigraphy and Microfauna (Radiolarians and Foraminifera) of the Upper Cretaceous (Upper Santonian–Lower Campanian) Carbonate Deposits in the Area of Struganik Village, Western Serbia)

    Liubov Bragina, Nikita Bragin, Luidmila Kopaevich, Nevenka Đerić, Nataša Gerzina Spajić (2020)
    Santonian, Campanian, radiolarians, planktonic foraminifera, biostratigraphy, limestones, Struganik, Serbia

  • A Model for Determining the Dependability of Continuous Subsystems in Coal Mines Using the Fuzzy Logic Approach

    Nikola Stanić, Miljan Gomilanović, Petar Marković, Daniel Krzanović, Aleksandar Doderović, Saša Stepanović (2024)
    This study presents a unique model for assessing the dependability of continuous parts of combined systems in open-pit mining through the application of fuzzy logic. Continuous sub-systems as part of the combined system of coal exploitation in surface mines have the basic function of ensuring safe operation, high capacity with high reliability, and low costs. These subsystems are usually part of the thermal power plant’s coal supply system and ensure stable fuel supply. The model integrates various independent partial ...
    fuzzy logic, max-min composition, continuous part of combined system (CCS), open pit, mining, dependability

  • Supstitucione reakcije Pd(II) kompleksa sa biološki važnim biomolekulima

    Aleksandar M. Mijatović, Jovana Bogojeski (2017)
    Kompleksi Pd(II), supstitucione reakcije

  • Stratigraphic implications of the Mio-Pliocene geodynamics in the area of Mt. Avala: new evidence from Torlak Hill and Beli Potok (Belgrade, Serbia)

    Ljupko Rundić, Meri Ganić, Slobodan Knežević, Dejan Radivojević, Miloš Radonjić (2019)
    Mt. Avala is located on the southern margin of the Pannonian basin (SPB), a border zone between the uplifted morphostructures of the Dinarides and Carpathian-Balkanides. Similar to the Pannonian basin, tectonostratigraphic evolution of the Mt. Avala area during the last 23 Ma has is characterized by syn- and post-rifting processes as well as tectonic inversion. Here, we present the results of field investigations of the Miocene‒Pliocene dynamics that led to different spatial positions of the same stratigraphic units (e.g. ...
    мио-плиоценска геодинамика, јужни Панонски басен, Авалски и Торлак хорст, Белопоточки трог, Србија
    ... (severna Šumadija). [Rupture setting of the broader area of the Avala and Ljuta strana (northern Šumadija) – in Serbian].– XII Congress of geologists of Yu- goslavia, Ohrid, vol. 5, 46–54. DOLIĆ, D. (1997): Jezerski miocen kod Beograda [Lake Miocene near Belgrade ‒ in Serbian and English].– Ann. Geol. ...

  • Праћење квалитета ваздуха у граду Лесковцу за период од 2019. – 2022. године

    Немања Костић (2024)
    Еколошка деградација је део наших свакодневних живота. Активности повезане са напредовањем индустрије и индустријских постројења, као и огромно повећање у количини саобраћаја производе полутанте у урбаним срединама који утичу на квалитет како ваздуха, воде, земљшта, тако и на квалитет самог живота популације. Они имају негативан ефекат на здравље људи и животиња, и имају велики импакт на цео екосистем.Ослобађајаћи огромне количине полутанта у атмосферу, човек је већ приметљиво променио композицију атмосфере изнад густо насељених индустријских области. Присутност полутаната у ваздуху ...
    агађење ваздуха, полутанти, утицај на здравље
    ... rpa/iy JleckoBiy 3a nepuoji oyu 2019 – 2022 rojuiHe Ta6exna 5.2. /leunucatbe uh0ekca S4O!-11 wG – Hg/m / m3 [= 00 - 426 D1 .0 DO [l ep 0, 1 yU pe /b 58 BB dH O| Sa ra fy yy he Ma Te pu |a U 25 1 - 350 e 2500 2501 - 3500 U BO01 - B5D — HNEO TBE ELURERITH I JEr1T EI T ...

  • Синтеза и карактеризација керамике на бази сфена

    Jelena R. Pantić (2015-07-10)
    Механохемијска активација стехиометријске смеше реактаната TiO2, SiO2 и CaCO3 показала се као веома успешна и једноставна метода за добијање сфена (CaTiSiO5). На основу мерења релативних густина свих синтерованих узорака установљено је да максималну густину од 93,9 % имају узорци који су активирани 30 минута и синтеровани на 1200 °С. Микроструктурном анализом, тј. анализом слика синтерованих узорака активираних 30 минута, које су добијене скенирајућом електронском микроскопијом, опажа се бимодална расподела величине зрна, са просечном величином од 3 μm, односно 5 ...
    сфен, механохемија, Ритвелдова метода, оптичка спектроскопија, микроструктурна анализа, фазна трансфоpмација, чврсти раствори
    ... 1168-1175. Kokkoros P. (1938) Über die Struktur des Durangit NaAIF[AsO4]. Z Kristallogr 99: 38-49. Kostov-Kytin V., Mihailova B., Kalvachev Yu. and Tarassov, M. (2005) Atomic arrangements in amorphous sodium titanosilicate precursor powders. Microporous and Mesoporous Mater 86: 223-230. ...
    ... activation for advanced materials. In: 7th European Symposium on Comminution: 422nd Event of the European Federation of Chemical Engineering (Ljubljana, YU, June 12-14) Fakulteta za naravoslovje in tehnologijo - VTOZD Montanistika, Ljubljana. Speer Ј.А. and Gibbs G.V. (1976) The crystal structure of ...
    ... Lindsley D.H. and Hauserman D. (1996) High- pressure phase transition in titanite (CaTiOSiO4). Am Mineral 81: 1527-1530. Kunz M., Xirouchakis D., Wang Y., Parise J.B. and Lindsley D.H. (1997) Structural investigations along the join CaTiOSiO4 – CaSnOSiO4. Schweizerische Mineralogische Petrographische ...

  • Синтеза и карактеризација керамике на бази сфена

    Jelena R. Pantić (2015-07-10)
    Механохемијска активација стехиометријске смеше реактаната TiO2, SiO2 и CaCO3 показала се као веома успешна и једноставна метода за добијање сфена (CaTiSiO5). На основу мерења релативних густина свих синтерованих узорака установљено је да максималну густину од 93,9 % имају узорци који су активирани 30 минута и синтеровани на 1200 °С. Микроструктурном анализом, тј. анализом слика синтерованих узорака активираних 30 минута, које су добијене скенирајућом електронском микроскопијом, опажа се бимодална расподела величине зрна, са просечном величином од 3 μm, односно 5 ...
    сфен, механохемија, Ритвелдова метода, оптичка спектроскопија, микроструктурна анализа, фазна трансфоpмација, чврсти раствори
    ... 1168-1175. Kokkoros P. (1938) Über die Struktur des Durangit NaAIF[AsO4]. Z Kristallogr 99: 38-49. Kostov-Kytin V., Mihailova B., Kalvachev Yu. and Tarassov, M. (2005) Atomic arrangements in amorphous sodium titanosilicate precursor powders. Microporous and Mesoporous Mater 86: 223-230. ...
    ... activation for advanced materials. In: 7th European Symposium on Comminution: 422nd Event of the European Federation of Chemical Engineering (Ljubljana, YU, June 12-14) Fakulteta za naravoslovje in tehnologijo - VTOZD Montanistika, Ljubljana. Speer Ј.А. and Gibbs G.V. (1976) The crystal structure of ...
    ... Lindsley D.H. and Hauserman D. (1996) High- pressure phase transition in titanite (CaTiOSiO4). Am Mineral 81: 1527-1530. Kunz M., Xirouchakis D., Wang Y., Parise J.B. and Lindsley D.H. (1997) Structural investigations along the join CaTiOSiO4 – CaSnOSiO4. Schweizerische Mineralogische Petrographische ...

  • Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes

    Jelena Malenović Nikolić, Dejan Vasović , Ivana Filipović , Stevan Mušicki, Ivica Ristović (2016)
    menadžment, rudrastvo i energetski kompleksi, okruženje, održivi razvoj, mrežno planiranje
    ... quality in the Republic of Serbia, under the CARDS Project “Supply of equipment for air quality monitoring stations, Serbia” (EuropeAid/124394/D/SUP/YU), is organized by the Environmental Protection Agency. Operational monitoring of air quality was implemented through the network of automatic stations ...
    ... 20. Streimikiene, D.; Sivickas, G. The EU sustainable energy policy indicators framework. Environ. Int. 2008, 34, 1227–1240. [CrossRef] [PubMed] 21. Wang, L.; Xu, L.Y.H.; Song, M. Environmental performance evaluation of Beijing’s energy use planning. Energy Policy 2011, 39, 3483–3495. [CrossRef] 22. ...

  • Alpine thermal events in the central Serbo-Macedonian Massif (southeastern Serbia)

    Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Andreas Wetzel, Irena Peytcheva, Albrecht von Quadt (2015)
    General Earth and Planetary Sciences

  • Atmospheric exposure vs burying: influences on damage intensity of built-in kersantite in the monument of the Small Staircase (Belgrade, Serbia)

    Nevenka Novaković, Predrag Dabić, Vesna Matović (2023)
    Proučavan je efekat „zatrpanog kamena“ na intenzitet procesa degradacije prisutnih na kersantitu koji je ugrađen u spomenik Malo stepenište. Istraživanja su vršena na uzorcima stene iz kamenoloma i na oštećenim kamenim blokovima ugrađenim u spomenik. Dok su neki delovi stepeništa bili pod zemljom 90 godina, većina kamenih elemenata je bila izložena različitim uslovima sredine i antropogenim uticajima. Urađeno je detaljno mapiranje trenutnog stanja spomenika kako bi se istražio uticaj “zatrpavanja” i kompleksne geometrije spomenika na tip propadanja i variranje ...
    Raspadanje, Indeks oštećenja, Zatrpavanje, Fizička svojstva, Kersantit

  • Analysis Of the Process Of Carbon Capture Utilization And Storage In Underground Reservoirs

    John Nyame (2024)
    The importance of mitigating the effects of global climate change has necessitated an in-depth exploration of innovative strategies to reduce carbon dioxide (CO2) emissions. Among these strategies, Carbon Capture, Utilization, and Storage (CCUS) has emerged as a promising and transformative solution. This master thesis delves into the diverse realm of CCUS processes, aiming to unravel the positives challenges, and opportunities within this dynamic field. The analysis begins with a systematic examination of carbon capture technologies, encompassing post-combustion, pre-combustion, and oxy-fuel combustion ...
    Carbon Capture, Utilization and Storage
    ... RAAAAA NAAAA 5 PALOZ:O 100070 402400 7. 3 4J (BRRARARARAAAAAAA AAAAAA RAAAAAA RAAAAAA AAAAA AAAAAA RAAAAAA RAAAAAA RAAARANAAAAAAAAAAAAA 8 PANBp:CG LJ yu u MOg eniv ı0. 11V . AANARAANAAAAAAAARAAAARARAA AAAAAA RAAAAAA RAAAAAA AAAAAA AAAAAA RAAA AAAAAA AAAAAA 11 PAVAJ:O LJ y a(u M TJI 0.07.00) ıi . AA ...

  • Application of machine learning for diagnosing the operation of a deep well pump in oil production

    Maja Trikić (2024)
    This paper will thoroughly examine how machine learning can improve the diagnosis of deep well pumps by analyzing the role and function of the pumps, dynamograms, sensor technologies, and diagnostic methods.Our analysis will provide insights into modern techniques and approaches for enhancing the performance and reliability of oil production systems, targeting cost reduction and increased operational efficiency.
    deep well pump, dynamograms, machine learning, diagnostics of operating coditions,Random Forest, XGBoost
    ... Sucker-Rod Pumping Manual; PennWell Books: Tulsa, OK, USA, 2003Curvelet Transform and sparse multi-graph regularized extreme learning 10. Wang, C.; Deng, C.; Wang, S. Imbalance-XGBoost: Leveraging weighted and focal losses for binary label-imbalanced classification with XGBoost. Pattern Recognit ...
    ... PMLR: New York, NY, USA, 2016. 12. Hajizadeh, Y. Machine learning in oil and gas; a SWOT analysis approach. J. Pet. Sci. Eng. 2019 13. Cheng, H.; Yu, H.; Zeng, P.; Osipov, E.; Li, S.; Vyatkin, V. Automatic Recognition of Sucker-Rod Pumping System Working Conditions Using Dynamometer Cards with ...

  • Sinteza i strukturna karakterizacija mikroporoznih arsenata i fosfata

    Sabina Z. Kovač (2015-09-28)
    Predmet rada i istraživanja ove doktorske disertacije su sinteza i strukturnekarakteristike novih kristalnih arsenata i fosfata koji sadrže Mg, K, Ca, Mn, Fe, Co, Ni,Cu, Zn, Sr, Ba i druge katjone. U strukturama arsenata i fosfata, AsO4- i PO4-tetraedrinajčešće se vezuju sa tetraedarski ili oktaedarski koordinisanim katjonima prelaznihmetala formirajući otvorene strukture (slojeve ili 3D mreže) sa širokim opsegomrazličitih topologija. U šupljinama ili porama u obliku povezanih ili nepovezanihkanala, tunela, kaveza i međuslojnog prostora mogu se ugraditi različiti vanmrežni joni(obično ...
    hidrotermalna sinteza, mikroporozna jedinjenja, arsenati, fosfati,rendgenska strukturna analiza
    ... Landry, J. M. (1999) ”Infrared Spectroscopy in Conservation Science”, Getty Conservation Institute, Los Angeles. 46. Dong, J. X., Wang, Y. X., Xu, H., Deng, F., Xu, J., Wang, J. G. (2008) Micropor. Mesopor. Mat. 116, 491–497. 47. Dowty, E. (2000) ATOMS for Windows. Version 5.1. Shape Software, 521 ...
    ... daje dodatne informacije za utvrđivanje veze neke ispitivane strukture sa drugim sličnim strukturama (Wiebcke and Marler, 2004; Rao et al., 2000; Yu et al., 2000; Natarajan et al., 2000). U porama ili šupljinama u obliku povezanih ili nepovezanih kanala, tunela, kaveza i međuslojnog prostora ugrađuju ...
    ... fosfata Sabina Z. Kovač 157 132. Philip, D. and Aruldhas, G. (1990) J. Raman Spectrosc. 21, 211–214. 133. Pomjakushin, V. Yu., Furrer, A., Sheptyakov, D. V., Pomjakushina, E. V., Conder, K. (2007) Phys. Rev. B, 76, 174433. 134. Rajić, N., Logar, N. Z., Golobič, A., Kaučič ...