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Упит dcterms_subject_txt:production control

295 items

  • Bilingual lexical extraction based on word alignment for improving corpus search

    Jelena Andonovski, Branislava Šandrih, Olivera Kitanović (2019)
    Library and Information Sciences,Computer Science Applications

  • Distribution of major and trace elements in the Kovin lignite (Serbia)

    Dragana Životić, Olga Cvetković, Predrag Vulić, Ivan Gržetić, Vladimir Simić, Konstantin Ilijević, Biljana Dojčinović, Suzana Erić, Bogdan Radić, Sanja Stojadinović, Snežana Trifunović (2019)
    geochemical and mineralogical study was performed on lignite samples from the Upper Miocene Kovin deposit, hosting three coal seams. The Kovin lignite is characterized by high moisture content, medium to high ash yield, medium to high sulphur content and a relatively low gross and net calorific value. The mineralogical composition, and major and trace element contents were determined by X-ray diffraction, scanning electron microscopy with energy dispersive Xray spectroscopy (SEM-EDS) analyses, and inductively coupled plasma optical emission spectrometry (ICP-OES). ...
    General Earth and Planetary Sciences, General Environmental Science
    ... 1995; WARD, 2016; YUDOVICH, 1978; YUDO­ VICH et al., 1985; YUDOVICH & KETRIS, 2002, 2005b). The mode or form of occurrence of trace elements may control po­ tential hazardous effects to human health (FINKELMAN et al., 2002) and the environment. Numerous studies performed in SE Europe on Greek (CH ...
    ... depends on the combination of specific plant constituents influenced by water level, regional depositional and paleo­environmental factors, which control the enrichment or depletion of the different ele­ ments and mineral phases contained in the coal. Chemical, bio­ logical and physical factors in mire ...
    ... Croatian Geological Society 1. INTRODUCTION Lignites of Upper Miocene age are the most important energy source in Serbia. Almost all lignite production (90%) from the Kolubara and Kostolac basins is used in thermal power plants (TPP), (EPS, 2018). Information on the content, distribution and mode ...

  • 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
    ... Zagreb 1968. godine [20] Ken Ranold, Maurice Steward: Designing oil and gas production system – How to size and select three phase separators, World Oil, Decembar, 1984. godine [21] D. Kataz: Natural gas Engineering, Production and Storage. [22] M. Soleša, N. Đajić: Proizvodnja i korišćenje geotermalne ...
    ... delle machine operatrici per il transporto di idrocarburi liqidi o gassoso lungo uno pipeline,S.P.A, MILAN, 1970., str.68 ? F.A.Inkley: Oil loss control in the petroleum industry the Institut of Petroleum, London, 1985., str. 43 11 5.2. Separacija gasa Krajnja faza separacije odvija se u separatorima ...
    ... delle machine operatrici per il transporto di idrocarburi liqidi o gassoso lungo uno pipeline,S.P.A, MILAN, 1970. godine [15] F.A.Inkley: Oil loss control in the petroleum industry the Institut of Petroleum, London, 1985. godine [16] Bill Smith, C.E. Crest: Design of heavy crude facilities exipored ...

  • Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду

    главни и одговорни уредник Душан Поломчић (2016)
    Рударско-геолошки факултет
    ... Underground Lead- Zinc Mine Production Planning Using Fuzzy Stochastic Inventory Policy. Archives of Mining Sciences, Polska Akademia Nauk, Vol. 60, No. 1, pp. 73–92, Walter de Gruyter GmbH. BELJIĆ Č., RISTOVIĆ I., GLIGORIĆ Z., GLUŠČEVIĆ B., TOMAŠEVIĆ A., 2013: Coal production in Serbia, the social aspects ...
    ... 2004: Utilization of fly ash in cement production. Proceedings of the 8th Conference on Environment and Mineral Processing, Part I, Ostrava, Czech Republic, pp. 145–149. KOSTOVIĆ M., SIMOVIĆ I., KOSTOVIĆ N., 2006: Fly ash utilization in cement production – some Serbian experience. Proceedings of ...
    ... BATALOVIC V., LEKOVIC B., 2012: Exploration, production pace faster in Serbia, Bosnia and Herzegovina. Oil & Gas Journal, vol. 110 no. 1A, 64–69. DANILOVIC D., KAROVIC MARICIC V., BATALOVIC V., LEKOVIC B., 2012: Device for more efficiency production of heavy oil. Chemical Engineering Research and ...

  • Towards Better Valorisation of Industrial Minerals andRocks in Serbia—Case Study of Industrial Clays

    Vladimir Simić, Dragana Životić, Zoran Miladinović (2021)
    Management, Monitoring, Policy and Law,Nature and Landscape Conservation
    ... classification. Exploration Stage (USA) Property Exploration Proving Assured Kaolin Reserve Mine Planning & Development Kaolin Quality Control and Mine Inventory Volume and Tonnage Measurement Exploration stage (Ser- bia) Preliminary Detailed Detailed Exploration during exploita- tion ...
    ... the basic non-metallic mineral raw materials, both in modern indus- try and in the entire history of the development of civilization. In terms of production volume and economic significance, they can be compared to stone and carbonate raw ma- terials only. The industrial clays include kaolins, bentonites ...
    ... scientifically and professionally observed, clays to produce tiles and facade bricks, clays to produce hollow building elements and clays for the production of solid bricks should be separated. Namely, there is a significant difference in the re- quirements for the quality of raw materials to produce ...

  • Application of a Method for Intelligent Multi-Criteria Analysis of the Environmental Impact of Tailing Ponds in Northern Kosovo and Metohija

    Gordana Milentijević, Blagoje Nedeljković, Milena Lekić, Zoran Nikić, Ivica Ristović, Jelena Đokić (2016)
    flotacijska jalovišta, životna sredina, višekriterijumska analiza, ekologija, Trepča
    ... procedure in span from 1 to 9. By valuing each criterion, coefficient weight of criteria was gained and are shown in Table 8. For the purpose of control of gained results, calculations of the CR are done. Results obtained confirmed that decision is consistent because its value is less than 0.1, or its ...
    ... economic development in every state. It is also known that the biggest environmental pollutant is the mining sector [1]. Mining is followed by a mass production of waste in the form of tailing on tailing ponds. They are often formed in areas which have other potential (agriculture, water supply, urban areas ...
    ... power plants on deposit spots and landfills in Serbia. Metallurgy in the Republic of Serbia contributes 10% to the total gross domestic product for production of basic metals and metal products [6]. In mines with metallic mineral ores, concentration of heavy metals in tailing has increased. This is why ...

  • Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability

    Marija Živković, Dejan Ivezić (2021)
    Transformation of the heating sector is recognized as being essential for ensuring reliable and afordable energy services provided with reduced consumption of energy sources and diminished impact on the environment and less import dependency. The possibility of utilizing energy sources that otherwise would be wasted needs to be considered and treated as a big advantage of district heating systems. Despite many advantages, sewage wastewater heat is still a mostly unused resource at the global level and a totally unused ...
    рекуперација топлоте из отпадних вода, систем даљинског грејања, топлотне пумпе, енергетске уштеде, емисија угљендиоксида, енергетска безбедност, Србија
    ... heat pumps to existing DH systems without jeopardizing the profitability of current production plants. Different-sized DH systems have been simulated to explore how increasing the share of heat pump production influences DH systems. Data on heat pump performance in an Olympic village in Vancouver ...
    ... treated wastewater by heat pumps, in all Serbian cities with DH systems, would result in the production of 6360 TJ of heat. As a consequence of the introduction of more efficient technology in heat production, the primary energy factor will be reduced to 1.467. This value is also highly influenced by ...
    ... pump. Energy Build 43(4):879–886. https:// doi. org/ 10. 1016/j. enbui ld. 2010. 12. 008 Meunier F (2004) Sorption contribution to climate change control. Clean Technol Environ Policy 6:187–195. https:// doi. org/ 10. 1007/ s10098- 003- 0226-7 Ministry of environmental protection (2018) Report on ...

  • Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species

    Biljana P Dojčinović, Boštjan Jančar, Lotfi Bessais, Aleksandar Kremenović, Nataša P Jović-Jovičić, Predrag T Banković, Dalibor M Stanković, Miloš Ognjanović, Bratislav V Antić (2019)
    Herein we report effects of partial substitution of Fe3+ by Y3+ in magnetite (Fe3O4) on morphology and inorganic arsenic species adsorption efficiency of the Fe3−xYxO4 nanoparticles formed. The series of Fe3−xYxO4 (x=0.00, 0.042 and 0.084, labeled as Y00, Y05 and Y10, respectively) was synthesized using co-precipitation followed by microwave-hydrothermal treatment (MW) at 200°C. With increase of yttrium content(xvalue), both the morphological inhomogeneity of the samples and the fraction of spinel nanorods as compared to spinel pseudospherical particles increased. By ...
    microstructure, microwave-hydrothermal synthesis, adsorption, magnetic nanoparticles, arsenic

  • Просторни положај лежишта угља Ђурђевик: геофизичко-геолошки модел

    Синиша Арсеновић (2019)
    Лежиште угља Ђурђевик представља источни део Бановићког угљеног басена и припада северној страни босанске офиолитске зоне унутрашњих Динарида у чији састав улазе стене палеозојске, мезозојске и кенозојске старости. Језерска доњомиоценска угљоносна серија изграђена је од лапоровито-глиновитих седимената са једним слојем мрког угља. Дебљина угљеног слоја креће се у интервалу од 5 до 25 m са генералним правцем пружања СЗ - ЈИ и падом према ЈЗ. У зони обухваћеноj геофизичким истраживањима изражена je пострудна тектоника у виду раседа мањег и ...
    рефлективна сеизмика, 3Д геофизичко-геолошки модел, угаљ, синтетички модел, моделирање
    ... буке 45 Слика 3.17 – Алгоритам обраде података 3.4.1. Аутоматско појачање сигнала Аутоматско појачање сигнала (AGC - Automatic Gain Control) подразумева нумеричку операцију, којом се као резултат добија истицање амплитуда снимљеног сигнала на основу оригиналног улазног сигнала по а ...
    ... Аутокорелација излазног сигнала применом деконволуције Списак скраћеница 2D – Две димензије 3D – Три димензије AGC – (Automatic Gain Control – AGC) - Аутоматско појачање сигнала CDP – (Common Depth Point – CDP) – Заједничка дубинска тачка CMP – (Common Mid Point – CMP) - Заједничка ...

  • The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector

    Aleksandar R. Madžarević, Dejan D. Ivezić, Miloš L. Tanasijević, Marija A. Živković (2020)
    Natural gas is used for the production of almost 20% of total energy today. The natural gas security of the Republic of Serbia is an urgent strategic, political and security issue. Serbia is one of the most vulnerable countries in Southeast Europe, because it only has one supply route. This study is a contribution to efforts to better understand the factors affecting energy security through the implementation of a new methodology based on the fuzzy–AHP synthesis model for measuring ...
    energetska bezbednost, prirodni gas, fazi AHP, AHP višekriterijumska analiza, fazi teorija
    ... and obligated for gas production. In 1991, NIS becomes a vertically integrated Energy Company. Its role was to explore, produce, refine and trade crude oil and their derivate and natural gas [67]. In 1979, maximum production was achieved (1.14 billion m3). Since then, production was in steady decline ...
    ... of the Republic of Serbia for natural gas [70]. With the domestic production of 335 million m3 in 2018, only 13.5% of needs could be met [71]. Table 2. Production of natural gas [71]. Year 2012 2013 2014 2015 2016 2017 2018 Production (million m3) 484 468 467 432 399 377 335 The main pipeline system ...
    ... Oil and Gas Industry concluded in January 2008 and signed in October 2009 [69]. This reflected on intensive indigenous production (around 480 million in 2012). Natural gas production in the last 8 years is shown in Table 2. The main gas fields are in Vojvodina, the Serbian part of the Pannonia Basin. ...

  • Preliminary regional landslide susceptibility assessment using limited data

    Igor Peshevski, Milorad Jovanovski, Biljana Abolmasov, Jovan Papic, Uroš Đurić, Miloš Marjanović, Ubydul Haque, Natasha Nedelkovska (2019)
    In this paper a heuristic approach for preliminary regional landslide susceptibility assessment using limited amount of data is presented. It is called arbitrary polynomial method and takes into account 5 landslide conditioning parameters: lithology, slope inclination, average annual rainfall, land use and maximum expected seismic intensity. According to the method, in the first stage, a gradation is performed for each of the carefully selected conditioning parameters by assigning so called rating points to the grid cells on which the ...
    klizišta, podložnost
    ... the size of the study area, resulting in increased data requirements in large study areas, and (4) the use of oversimplified factors assumed to control or trigger landslides, by only considering information that is relatively easily mapped or derivable from a digital elevation model (DEM). Furthermore ...
    ... plete landslide inventory, different scale landslide conditioning maps, missing very precise data on rainfall quantity, different periods of map production, etc.) it is still possible to produce rep- resentative landslide susceptibility zonation. Our modelling results show more than 74% of landslides ...
    ... statistical data, rainfall thresholds, and exact earth- quake intensities during sliding events. Another drawback is the different scale and age of production of the thematic maps used which range from the 5 m resolution DEM to the 1:1.000.000 seis- mic intensity maps and rainfall maps. This required certain ...

  • Development of the Availability Concept by Using Fuzzy Theory with AHP Correction, a Case Study: Bulldozers in the Open-Pit Lignite Mine

    Stevan Đenadić, Dragan Ignjatović, Miloš Tanasijević, Uglješa Bugarić, Ivan Janković, Tomislav Šubaranović (2019)
    Availability is one of the most used terms in maintainability engineering. This concept is used to denote: The quality of service of an engineering system, i.e., machines, weak points’ analysis, asset management, as well as making decisions in the process of life cycle management. Availability is an overall indicator and contains partial indicators that are oriented towards reliability, maintenance, and logistical support. Availability presents a variable value and changes in time and space. Usually, availability is shown as the ...
    raspoloživost, fazi teorija, AHP višekriterijumska analiza, eksperska ocena, buldozer
    ... ; Tanasijevic, M.; Jovancic, P.; Djuric, R. A Fuzzy Expert Model for Availability Evaluation. In Proceedings of the 20th International Carpathian Control Conference (ICCC), Kraków-Wieliczka, Poland, 26–29 May 2019; ISBN 978-1-7281-0701-1. 21. Saaty, T.L. Decision Making: The Analytical Hierarchy Process; ...
    ... the project “Research on possibility for AT (Advanced Technology) rockbolting application in mines for the purpose of increasing work safety and production efficiency” (TR 33025), financed by the Ministry of Education and Science of the Republic of Serbia within the framework of Programme of research ...

  • Curcumin nanonization using an alternative small-scale production unit: selection of proper stabilizer applying basic physicochemical consideration and biological activity assessment of nanocrystals

    Ines Nikolić, Jelena Antić-Stanković, Dragana Božić, Danijela Ranđelović, Bojan Marković, Dominique Jasmin Lunter, Aleksandar Kremenović, Miroslav Savić, Snežana Savić (2020)
    As the number of poorly soluble drugs is increasing, nanocrystals have become very interesting due to wide range of application possibilities. Curcumin was used as a model active ingredient in this work. Even though it has many proven positive effects, due to its physicochemical issues, its possibilities have not been fully exploited. The goal of this work was to select optimal conditions for a top-down method for curcumin nanosuspension production, and to perform their comprehensive characterization applying complementary methodologies: ...
    nanocrystal, curcumin, top-down method, wetball milling

  • Hibridni sistem za planiranje i analizu ventilacije rudnika

    Nikola Lilić, Ranka Stanković, Ivan Obradović (2000)
    Ventilacija rudnika, informacioni sistemi
    ... mine design phase. Ventilation requirements and ventilation system structure can be defined only on basis of a production plan and a plan of mine work realization dynamics. A mine production plan, which includes exploitation technology and system management, is the decisive factor for mine infrastructure ...
    ... Prentice-Hall, Englewood Cliffs, (1976). 4. AZIZ N., SRINIVASA RAO B., BAAFI E., "Aplication of Fluid Dynamics codes to develop effective gas/dust control measures in underground coal mines", Australian Coal Journal, No 42, pp 19-27, (1993). 5. BANDOPADHYAY S., RAMANI R., "Convection-diffusion equations ...
    ... Adaptive Systems”, Disertation Abstracts International, 41(9), 3503B., (1975). 17. DURKIN J., DUSTPRO: A distributed expert system for coal mine dust control, ESD/SMI Second Annual Expert Systems Conference, Detroit MI, pp.337-385, Apr.12-14, (1988). 10 O knjizi1 Metodologija planiranja ventilacije ...

  • Modeliranje tehnoloških procesa u rudarstvu u uslovima nedovoljnosti podataka primenom teorije grubih skupova

    Zoran M. Štirbanović (2015-07-01)
    Rudarstvo, a u okviru njega i priprema mineralnih sirovina, se odlikuje složenošću tehnoloških procesa što je posledica velikog broja uticajnih parametara. Samim tim je potrebno biti veoma obazriv prilikom donošenja odluka u oblasti rudarstva. U cilju što efikasnijeg funkcionisanja procesa, moguće je primeniti različite metode koje služe za pojednostavljenje procesa odlučivanja. Jedna od takvih metoda jeste i teorija grubih skupova. Ona predstavlja relativno novu matematičku teoriju koja je pogodna za razumevanje nepreciznih i nepotpunih podataka kao i za otkrivanje ...
    rudarstvo, priprema mineralnih sirovina, teorija grubih skupova, višekriterijumsko odlučivanje, flotacijsko jalovište, flotacijski kolektor, flotaciona mašina
    ... LITERATURA 1. Z. Pawlak, Rough sets, http://bcpw.bg.pw.edu.pl/Content/2026/RoughSetsRep29.pdf 2. T. Munakata, Z. Pawlak, Rough control application of rough set theory to control, Fourth European Congress on Intelligent Techniques and Soft Computing, Aachen, Germany, September 2 – 5, 1996, Proceedings ...
    ... T. Chai, H. Wang, C.-Y. Su, Data Mining Based Feedback Regulation in Operation of Hematite Ore Mineral Processing Plant, Proceedings of American Control Conference 2009, St. Louis, MO, USA June 10-12, 2009, pp. 907–912. http://arxiv.org/ftp/arxiv/papers/0804/0804.0528.pdf Zoran Štirbanović, DOKTORSKA ...
    ... 144, 2014, pp. 160-167. 53. C. Bai, J. Sarkis, Green supplier development: analytical evaluation using rough set theory, Journal of Cleaner Production 1, 2010, pp. 1200–1210. 54. L. Yan, J. Wang, X. Hao, Z. Tang, Glacier mapping based on rough set theory in the Manas River watershed, Advances ...

  • Integrated Stratigraphy of the Middle–Upper Jurassic of the Krížna Nappe, Tatra Mountains

    Renata Jach, Nevenka Đerić, Špela Goričan, Daniela Reháková (2014)
    carbon and oxygen isotopes, radiolarians, calcareous dinoflagellates, radiolarites, Krížna Nappe, West ern Carpathians, Tethys
    ... of calcareous dinoflagellates as in the Moluccana Zone of the Late Kimmeridgian (Figs 3, 7, 8). A similar shift, but with- out stratigraphic control, was recorded i m the Ždiarska Vidla section at 142 m(Fig. 8). An analogue 8IŠC shift was TeCOg- nized in many Tethyan sections, for instance, ...
    ... ETAL. Serie 2, Sciences de la Terre et des Plančtes, 329: 587—595. Bartolini, A., Pittet, B., Mattioli, E. & Hunziker, J. C., 2003. Re- gional control on stable isotope signature in deep-shelf sedi- ments: an example of the Late Jurassic of southern Germany (Oxfordian-Kimmeridgian). Sedimemfary ...
    ... & ŠC. Increased 6'ŠC values in the Late Callovian, Middle Oxfordian and Late Kimmeridgian (Moluccana Zone) correspond with enhanced radiolarian production. A significant increase in CaCOy content is recorded just above the Late Callovian 6&5C excursion, which coincides with a transition from green ...

  • Природни потенцијал минералних вода Србије - Natural potential of mineral waters in Serbia

    Оливера Крунић (2021)
    минералне воде

  • Long-term planning methodology for improving wood biomass utilization

    Vladimir Vukašinović, Dušan Gordić, Marija Živković, Davor Koncalović, Dubravka Živković (2019)
    The insufficiently developed forest management system is often followed by undeveloped forest resources supply chain and insufficient institutional support. These cause inefficient usage of fuel-wood as well as huge amounts of unused forest residues. In order to achieve optimal and long-term sustainable utilisation of biomass, an original methodology based on the interaction of mathematical optimization and backcasting approach has been developed. Mathematical optimization is used for both generation and consideration of techno-economic parameters of the forest biomass supply chain. ...
    Long-term planning methodology, Forest biomass, MINLP, Backcasting

  • Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling

    Branislav Petrović, Veljko Marinović, Zoran Stevanović (2023)
    Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • Prostorni položaj ofiolita istočne Vardarske zone: geofizičko-geološki model i njegove geodinamičke implikacije

    Dragana D. Petrović (2015-12-29)
    Centralni deo Balkanskog poluostrva je geotektonski veoma složen. Tetis je zatvorentokom gornjeg mezozoika, a ofioliti na zapadu i ofioliti Vardarske zone predstavljajuostatke nekadašnjih okeanskih prostora. Najistočniji deo Vardarske zone razlikuje se odsvih ostalih ofiolita na Balkanskom poluostrvu i karakteriše se najizraženijim suprasubdukcijskimafinitetom. Istočna vardarska zona locirana je u centralom delu Srbije.Na severu se prostire do Apusena u Rumuniji, a na jugu obuhvata cetralni deoMakedonije i Peonias zonu u severnoj Grčkoj. Istočna vardarska zona se nalazi istočnood geotektonske jedinice Kopaonik ...
    Istočna vardarska zona; ofioliti; 2D i pseudo 3D geofizičko-geološkimodel; geodinamička evolucija
    ... performed in software Oasis Montaj/GM SYS, along 7 sections that were placed perpendicular to the East Vardar Zone direction, and along three control sections. The sections were between 20 and 50 km long and their depth was between 2 and 4 km. The obtained results invariably suggest that the ...