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Упит dcterms_subject_txt:General Chemical Engineering

752 items

  • The Importance of Detailed Groundwater Monitoring for Underground Structure in Karst (Case Study: HPP Pirot, Southeastern Serbia)

    Marina Čokorilo Ilić, Ana Mladenović, Marina Ćuk, Igor Jemcov (2019)
    Geography, Planning and Development,Aquatic Science,Biochemistry,Water Science and Technology
    ... sampling points were selected for chemical analyses of the water. Groundwater was sampled on three occasions and a total of 25 samples from the tunnel were analyzed (in some places sampling was not possible because the amount of water decreased over time). The primary chemical composition of the groundwater ...
    ... mining in karstic terrane; an engineering challenge. In Geotehnical & Environmental Applications of Karst Geology & Hydrology; Beck, B.F., Herring, J.G., Eds.; CRC Press: Boca Raton, FL, USA, 2001; pp. 3–12. ISBN 90-5809-190-2. 2. Milanovic, P. Geological Engineering in Karst; Energoprojekt: Belgrade ...
    ... threatened/critical zones of the tunnel in terms of groundwater aggressiveness and the tunnel’s structural stability were identified on the basis of the chemical composition of the groundwater sampled from the tunnel. The aggressiveness analyses were based on EU standard EN 206-1 [13], US Department of Tra ...

  • An intelligent hybrid system for surface coal mine safety analysis

    Nikola Lilić, Ivan Obradović, Aleksandar Cvjetić (2010)

  • Definition of Circulation Conditions and Groundwater Genesis of the Complex Krupaja Hydrogeological Karst System (Eastern Serbia)

    Ljiljana Vasić, Saša Milanović, Tina Dašić (2023)
    Management, Monitoring, Policy and Law,Renewable Energy, Sustainability and the Environment, Geography, Planning and Development, Building and Construction
    ... they infiltrate into the discharge channel of deep thermal water. The physico-chemical characteristics of the groundwater (related to the seasons) of the Krupaja system are shown in Table 1. Table 1. Basic physico-chemical parameters of the Krupaja system. ; Temperature Electrical Dissolved Turbidit: ...
    ... and mean residence times, as well as different responses to recharge, causes the existence of different types of water, in terms of temperature, chemical composition, and age, within the same karst system. In this research, complex investigations of the Krupaja arst system aimed to provide a large ...
    ... hydrochemical characteristics of the water, an increased content of certain trace elements (Al, Fe, Mn, SiO», etc.) was detected, similar to the chemical composition of the water at he natural thermal spring of the Krupaja system [14]. Figure 3 shows in detail the layout of the springs and the borehole ...

  • Hydrochemical changes and groundwater grouping data by multivariate statistical methods within one karst system: recharge–discharge zone (Eastern Serbia case study)

    Ljiljana Vasić, Dragana Živojinović, Vladana Rajaković-Ognjanović (2020)
    Geochemistry and Petrology

  • Geochemical evaluation of dolostone deposits in Montenegro: Implications for potential industrial applications

    Darko Bozovic, Vladimir Simic, Dragan Radulovic, Slobodan Radusinovic, Vesna Matovic, Anja Terzic (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 ...
    примарне сировине, минералогија, физичко-механичка својства, технолошка својства, наука о материјалима

  • Novi model za postizanje optimalne proizvodnje na naftnom polju Amal

    Elnori Elmabrouk Ali Elhaddad (2015-04-16)
    Doktorskom disertacijom analizirani su i proučavani problemi proizvodnje nafte iprimenjene metode za njihovo rešavanje na naftnom polju Amal. Ukratko jeprikazana proizvodnje nafte u Libiji, njene karakteristike i rezerve, da bi se videoznačaj ovog naftnog polja.Utvrđeno je da su na naftnom polju Amal ključni problemi koji prate procesproizvodnje taloženje parafina, pojava slojnog peska, neefikasan rad gasliftsistema, neefikasna desalinizacija nafte i ekološki problemi. Proizvodniproblemi, pojedinačno i više njih zajedno, na nekim bušotinama uzrokovali susmanjenje proizvodnje nafte od 40 do 75%. Zbog ...
    nafta, proizvodnja, optimizacija, Amal, Libija
    ... properties of asphaltene aggregates, Energy & Fuels, 19,1099 -1108. Nikolaou M. (2013) Computer-aided process engineering in oil and gas production, Computers & Chemical Engineering, Volume 51, 96 -101. NIS (2011), Naftna industrija Srbije. NOC (2011) The Libyan National Oil Corporation, www ...
    ... Ultrasonic-electric United Desalting and Dewatering, Chinese Journal of Chemical Engineering, Volume 16, Issue 4, 564-569. Yildiz T., Langlinais J.P. (1991) Pressure losses across gravel pack, Journal of Petroleum Science and Engineering, Volume 6, Issue 3, 201-211. Zhang X., Tian J., Wang L., Zhou Z ...
    ... R., Al-Otaibi M.B. (2006) Building inferential estimators for modeling product quality in a crude oil desalting and dehydration process, Chemical Engineering and Processing: Process Intensification, Volume 45, Issue 7, 568-577. Abilov F.A., Orudjev A.G., Lange R., (1999) Optimization of oil-containing ...

  • Novi model za postizanje optimalne proizvodnje na naftnom polju Amal

    Elnori Elmabrouk Ali Elhaddad (2015-04-16)
    Doktorskom disertacijom analizirani su i proučavani problemi proizvodnje nafte iprimenjene metode za njihovo rešavanje na naftnom polju Amal. Ukratko jeprikazana proizvodnje nafte u Libiji, njene karakteristike i rezerve, da bi se videoznačaj ovog naftnog polja.Utvrđeno je da su na naftnom polju Amal ključni problemi koji prate procesproizvodnje taloženje parafina, pojava slojnog peska, neefikasan rad gasliftsistema, neefikasna desalinizacija nafte i ekološki problemi. Proizvodniproblemi, pojedinačno i više njih zajedno, na nekim bušotinama uzrokovali susmanjenje proizvodnje nafte od 40 do 75%. Zbog ...
    nafta, proizvodnja, optimizacija, Amal, Libija
    ... properties of asphaltene aggregates, Energy & Fuels, 19,1099 -1108. Nikolaou M. (2013) Computer-aided process engineering in oil and gas production, Computers & Chemical Engineering, Volume 51, 96 -101. NIS (2011), Naftna industrija Srbije. NOC (2011) The Libyan National Oil Corporation, www ...
    ... Ultrasonic-electric United Desalting and Dewatering, Chinese Journal of Chemical Engineering, Volume 16, Issue 4, 564-569. Yildiz T., Langlinais J.P. (1991) Pressure losses across gravel pack, Journal of Petroleum Science and Engineering, Volume 6, Issue 3, 201-211. Zhang X., Tian J., Wang L., Zhou Z ...
    ... R., Al-Otaibi M.B. (2006) Building inferential estimators for modeling product quality in a crude oil desalting and dehydration process, Chemical Engineering and Processing: Process Intensification, Volume 45, Issue 7, 568-577. Abilov F.A., Orudjev A.G., Lange R., (1999) Optimization of oil-containing ...

  • Geotechnical zoning of the terrain along the first section of E-80 highway in Serbia – SEETO route 7

    Dragoslav Rakić, Zoran Berisavljević, Irena Basarić, Snežana Bogdanović, Jovana Janković (2019)
    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 ...
    ... le-C (around 2 %). 4 CONCLUSIONS Results of performed investigation works are used for the general zoning of the terrain in the wider zone of the highway route, taking into account engineering geological, morphological and hydrogeological characteristics. Geotechnical zoning is performed ...
    ... neotectonical and seismogeological analysis, determination of design parameters of seismicity for structures, forming of engineering geological map of limitations. 2 ENGINEERING GEOLOGICAL CONDITIONS IN THE ZONE OF HIGHWAY ROUTE Regional rupture pattern indicates two systems of perpendicular ...
    ... stage of alluvial environment formation, and they are unfavourable from engineering geological aspect. Potential instabilities are only present in the zone of unregulated river banks (Figure 4). Table 1. Engineering geological zones with extracted geological units Section Length (km) ...

  • Control of substructure construction of railways in the Republic of Serbia

    Dragan Lukić, Dragoslav Rakić, Irena Basarić Ikodinović (2022)
    Контрола збијености природног тла (у ископу) или збијеног у насипу при изградњи саобраћајница представља један од основних облика контроле квалитета доњег строја. Код изградње брзих саобраћајница (аутопутеви и брза железница) приоритет је постизање високог нивоа контроле извршених радова. У циљу онемогућавања диференцијалног слегања (при изградњи насипа), или промене запремине услед допунског збијања материјала, које неминовно доводе до деформација, потребно је извршити оптимално збијање материјала. У оквиру овог рада приказује се техничка регулатива која регулише контролу збијености при изградњи железничке ...
    доњи строј, техничка регулатива, насип, збијеност, контрола
    ... STEPGRAD2022 PROCEEDINGS OF INTERNATIONAL CONFERENCE ON CONTEMPORARY THEORY AND PRACTICE IN CONSTRUCTION XV maximum aggregate grain size chemical stabilization is used to improve the load-bearing capacity of the material. The foundation soil planum must meet the geometric requirements [3:6-6]: ...
    ... (prescribed) values is not good, but also lists the measures taken to achieve the required value (material replacement, application of geosynthetics, chemical stabilization, etc.). Table 4.Proposed presentation of compaction test results 607 STEPGRAD2022 PROCEEDINGS OF INTERNATIONAL CONFERENCE ...
    ... PRACTICE IN CONSTRUCTION XV PROCEEDINGS Publisher University of Banja Luka Faculty of Architecture, Civil Engineering and Geodesy - - On behalf of the publisher Associate Professor Editors Associate Professor - Associate Professor ...

  • Improvement of 1D geoelectric sounding by narrowing the equivalence range and identification, quantification and reduction of lateral effects using the tri-potential technique

    Filip Arnaut, Branislav Sretenović, Vesna Cvetkov (2022)
    General Earth and Planetary Sciences,General Environmental Science

  • Short-term forecasting of PM10 and PM2.5 concentrations with Facebook's Prophet Model at the Belgrade-Zeleno brdo

    Filip Arnaut, Vesna Cvetkov, Dragana Đurić, Mileva Samardžić-Petrović (2023)
    General Earth and Planetary Sciences, General Environmental Science

  • Contribution to the geotechnical classification of municipal waste landfills in Serbia

    Dragoslav Rakić, Irena Basarić, Laslo Čaki, Slobodan Ćorić (2018)
    Management, Monitoring, Policy and Law, Nature and Landscape Conservation, Geochemistry and Petrology, Waste Management and Disposal,Geotechnical Engineering and Engineering Geology,Water Science and Technology,Environmental Chemistry,Environmental Engineering

  • Optimisation of underground mine decline development system using genetic algorithm

    Zoran Gligorić, Aleksandar Ganić, Rade Tokalić, Aleksandar Milutinović (2014)
    ... York: IEEE Press, pp.579-584. 5 SHOPOVA, G.E. and VAKLIEVA-BANCHEVA, G.N. (2006) BASIC–A genetic algorithm for engineering problems solution. Computers and Chemical Engineering, 30 (8), pp.1293-1309. ...
    ... slope that can be handled by loaded mine truck in a safe way. Decline optimisation is concerned of determination of locations of SBP and UMCP. A general design optimisation problem is formulated as follows: Optimisation of underground mine decline ... ...
    ... decline development system using genetic algorithm | Zoran Gligorić, Aleksandar Ganić, Rade Tokalić, Aleksandar Milutinović | Underground mining engineering;Подземни радови | 2014 | | http://dr.rgf.bg.ac.rs/s/repo/item/0003077 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду ...

  • Influence of mono- and two-component organic modifiers on determination of lipophilicity of tetradentate Schiff bases

    Nikola Stevanović, Aleksandar Mijatović, Aleksandar Lolić, Mario Zlatović, Rada Baošić (2021)
    Ispitivani su uticaji primene mono- i dvokomponentnih organskih modifikatora na određivanje lipofilnosti 12 tetradentatnih Šifovih baza metodom reverzno-fazne tankoslojne hromatografije. Osnovni cilj je da se proceni tip interakcije između posmatranih jedinjenja i komponenti primenjenih hromatografskih sistema i uspostavi neki obrazac ponašanja kako bi se lakše izabrala kombinacija organskih modifikatora koji će simulirati interakciju u biološkim sistemima na osnovu činjenica da iste osnovne intermolekularne interakcije su odgovorne za ponašanje supstanci i u biološkom i u hromatografskom sistemu. Primenjeni organski modifikator ...
    Šifove baze, Lipofilnost, RP-TLC, Organski modifikatori

  • Model inteligentnog sistema adaptivnog upravljanja procesom prerade rude

    Ivana M. Jovanović (2016-01-13)
    U oblasti procesa prerade rude, flotacijska koncentracija predstavlja jednu od najznačajnijih i najčešće primenjivanih metoda separacije korisnih od nekorisnih minerala. Samim tim, veoma je važno osigurati uspešan rad flotacijskog postrojenja kroz dostizanje zadovoljavajućih tehno-ekonomskih pokazatelja. Cilj upravljanja procesom flotacijske koncentracije je upravo optimizacija kvaliteta i iskorišćenja korisne komponente u koncentratu uz maksimizaciju profita. Shodno tome, istraživanja na polju modelovanja i upravljanja ovim procesom zauzimaju značajno mesto u praksi kontolnog inženjenringa.Teorijska istraživanja u okviru doktorske disertacije obuhvatila su analizu položaja ...
    flotacijska koncentracija, modelovanje, upravljanje, inteligentni sistem, soft kompjuting, fazi logika, veštačke neuronske mreže
    ... , Calero, M., 1996. Flotation rate of celestite and calcite. Chemical Engineering Science, Vol. 51, No. 1, pp. 119-125 103. Hernáinz, F., Calero, M., 2001. Froth flotation: kinetic models based on chemical analogy. Chemical Engineering and Processing 40, pp. 269–275 104. Hirajima, T., Oshima, K ...
    ... Image Analysis and Neural Networks. Chemical Engineering Communications 202 (7), pp. 911–919 113. Hu, W., Hadler, K., Neethling, S.J., Cilliers, J.J., 2013. Determining flotation circuit layout using genetic algorithms with pulp and froth models. Chemical Engineering Science 102, pp. 32–41 114. Huang ...
    ... flotation processes with self-organizing neural nets. Chemical Engineering Communications 139 (1), pp. 25–39 4. Aldrich, C., Moolman, D.W., Gouws, F.S., Schmitz, G.P.J., 1997. Machine learning strategies for control of flotation plants. Control Engineering Practice, Vol. 5, No. 2, pp. 263–269 5. Aldrich ...

  • Mineralogical study of clays from Dobrodo, Serbia, for use in ceramics

    Maja Milošević, Predrag Dabić, Sabina Kovač, Lazar Kaluđerović, Mihovil Logar (2019)
    keramika, glina, Dobrodo, mineralogija, sirovina, Srbija

  • Mineral Resources of Serbia: Environmental, Societal and Economic Challenges

    Vladimir Simić, Rade Jelenković, Dragana Životić (2019)
    ... of Chemical Technology. Professor Dimitrijević”s research interest has always been within a wide area of chemistry, chemical technology, and chemical engineering, with the main focus on leaching of metals and sulfides, mineral processing, corrosion of metals, and environmental engineering: and ...
    ... Instrumental Analysis and Environmental Protection. The research interest of Maja Nujkić is in the area of chemistry, chemical technology, chemical engineering, and environmental engineering and protection, with special emphasis on biomonitoring and phytoremediation of heavy metals, ecotoxicology, and ...
    ... professor of Inorganic Chemistry, Inorganic Chemical Technology, Technological Operations, and Ceramics and Glass Technology. Professor Milić's research interest has always been in the area of chemistry, chemical technology, and chemical engineering, and especially in electrochemistry, metal corrosion ...

  • Surface functional groups and degree of carbonization of selected chars from different processes and feedstock

    Marija Ilić, Franz-Hubert Haegel, Aleksandar Lolić, Zoran Nedić, Tomislav Tosti, Ivana Sredović Ignjatović, Andreas Linden, Nicolai D. Jablonowski, Heinrich Hartmann (2022)
    The knowledge ofthe structural and chemical properties of biochars is decisive for their application as technical products. For this reason, methods for the characterization of biochars that are generally applicable and allow quality control are highly desired. Several methods that have shown potential in other studies were used to investigate two activated carbons and seven biochars from different processes and feedstock. The chars were chosen to cover a wide range of chemical composition and structural properties as a hardness ...
    Biougalj, različiti procesi dobijanja, različite sirovine, površinski aktivne grupe, x-ray, FT-IR,XPS
    ... chars for the investigations in Belgrade (SEM, XRD, FT-IR, Raman, titrations), the chemical analyses, XPS, and SIP in Julich. Subsamples were taken from these samples for each ofthe determinations. For each of the chemical analysis (C, H, N; oxygen; other elements), except ash determination, three ...
    ... the use as a fuel. X-ray photoelectron spectroscopy XPS yields results on the chemical composition in a thin layer at the surface of material, these results may be considerably different from those of the chemical analysis of bulk materials. Despite that fact, the overview of the elements (Table ...
    ... presence of phosphoric acid in AC2, additional chemical analysis might be necessary to elucidate the true composition. X-ray diffractograms show the presence of crystalline inorganic compounds for some of the chars in accordance with the chemical analysis and a transition of the carbon-rich matrix ...

  • The subthermal potential of karstic groundwater of Kučaj–Beljanica region in Serbia estimated by the multivariate analysis

    Ljiljana Vasić, Dragana Ž. Živojinovic, Vladana Rajaković-Ognjanović, Huang Fen, Cao Jianhua (2021)
    Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • Simulation of Hydrogeological Environmental Discharge in Case of Interruption Constant Observations

    Marina Čokorilo Ilić, Dragoljub Bajić, Miroslav Popović (2024)
    Monitoring Network, data, hydrogeological environment, tunnel, simulation