Претрага

Упит dcterms_subject_txt:Planning and Development,Aquatic Science,Biochemistry,Water Science and Technology

2435 items

  • Uticaj utiskivanja gas-lift gasa na prenos mase i toplote

    Branko Grubač (2019)
    Nakon uvođenja kontinualnog gas-lifta, primećen je porast proizvodnje tečnog naftnog gasa, TNG, u postrojenju za preradu gasa, kao jednog od finalnih proizvoda dobijenog iz fluida gaso kondenzatnih i rastvorenog gasa iz naftnih bušotina. Pretpostavljeno je da se prisustvom gas-lift gasa uspostavlja drugačija ravnoteža faza u odnosu na slučaj bez gaslifta, te da je gas-lift gas stripovao propan i butane iz tečne u parnu fazu, što je dovelo do povećanja prinosa TNG-a. Napravljen je model bušotine koja radi u kontinualnom gas-liftu ...
    gas-lift, modelovanje bušotine, prenos mase i toplote, taloženje parafina
    ... petroleum technology, Vol. 14, str 416-426, (1962) [19] P. Willhite, Overall heat transfer coefficients in steam and how water injection wells, Jorunal of petroleum technology, Vol. 19, str 607-615, (1967) [20] M. Hamidi, H. Karimi, M. Boostani, Flow patterns and heat transfer of oil-water two phase ...
    ... Conference on research and development in petroleum and gas, Rio de Jeneiro, str 1220-1246, (2003) [51] L. Mengxia, L. Ruiquan, L. Junliang, L. Wei, K. Wenqui, Parameter sensitivity analysis of gas-lift well unloading processes, International journal of heat and technology, Vol. 33, str 237-245 ...
    ... Zhang, C. Sarica, Unified modeling of gas/oil/water – pipe flow – basic approaches and preliminary validation, Journal of Petroleum Science and Engineering, Projects, Facilities & Construction, str 1-7, (2006) [78] T. Harmathy, Velocity of large drops and bubbles in media of infinite restricted extent ...

  • Towards a Mining Equipment Ontology

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... those concepts and simple reasoning about the domain. Hence, ontologies are basically a type of terminological resources, albeit on top of the terminological resource development hierarchy. They enable sharing of domain information among people, databases, and information technology (IT) applications ...
    ... profiles, users, open pits, excavation machinery and conveying mechanization and technological systems is realized within the SukuMine library. The SukuTM library contains classes for exploitation planning, whereas classes pertaining to work force and work safety can be found in the SukuSezar library ...
    ... as production planning and management, work safety (registering of injuries), maintenance, etc. 6 Figure 4: Panel for management of mining engineering terminology In Figure 5, the left hand side of the panel depicts the predefined classification of equipment types and their groupings ...

  • Laboratory Testing of Nanosilica- Reinforced Silicate and Polyacrylamide Gels

    Irina Zahirovic, Dušan Danilović, Milica Šuput Vranjin, Miloš Tripković (2023)
    drilling fluid formulation, upstream oil and gas, fluid dynamics, fluid loss control, gel

  • Synthesis and characterization of high-pressure and high-temperature sphene (CaTiSiO5)

    Jelena Pantić, Vladimir Urbanovich, Vesna Poharc-Logar, Bojan Jokić, Marija Stojmenović, Aleksandar Kremenović, Branko Matović (2014)
    Sphene (CaTiSiO5), a calcium titanosilicate ceramic has been prepared from a powder mixture of CaCO3, TiO2 and SiO2 using vibro-milling for homogenization and activation of precursors. During the highpressure and high-temperature synthesis (HPS) process at 4 GPa and 1,200 °C, sphene undergoes into phase transition, from room-temperature phase P21/a to high-temperature phase A2/a. Evidence of that structural phase transition is given in this paper using infrared, Raman spectroscopy and X-ray powder diffraction. Rietveld refinement was employed to get the ...
    Sphene, Phase transition, Raman spectroscopy, X-ray diffraction, SEM, IR

  • Using English Baits to Catch Serbian Multi-Word Terminology

    Cvetana Krstev, Branislava Šandrih, Ranka Stanković (2018)
    In this paper we present the first results in bilingual terminology extraction. The hypothesis of our approach is that if for a source language domain terminology exists as well as a domain aligned corpus for a source and a target language, then it is possible to extract the terminology for a target language. Our approach relies on several resources and tools: aligned domain texts, domain terminology for a source language, a terminology extractor for a target language, and a ...
    aligned texts, word alignment, terminology extraction, electronic dictionaries, morphological inflection
    ... characteristic to Slavic languages producing many different forms for each lemma. 4.2. Dictionary of Library and Information Science The development of the Dictionary of Librarianship: English-Serbian and Serbian-English (in this text referred to as ‘Dictionary’) (Ljiljana Kovačević, 2014) has started in ...
    ... Dictionary of Library and Infor- mation Science (English/Serbian pairs); • The rule-based system for the extraction and lemmati- zation of potential terminological nominal phrases; • Bilingual Serbian/English list of inflected word forms and MWE pairs derived from bilingual dictionaries and morphological ...
    ... supported by Serbian Ministry of Education and Science under the grants #III 47003 and 178006. 7. Bibliographical References Ananiadou, S., McNaught, J., and Thompson, P. (2012). The English Language in the Digital Age. META-NET White Paper Series. Georg Rehm and Hans Uszkoreit (Series Editors). Springer ...

  • Life Cycle Assessment of Individual Wood Biomass Heating Systems in Households

    Boban Pavlović, Dejan Ivezić, Marija Živković (2020)
    The use of solid fuels (wood biomass and coal) for heating of households continues to be common practice within European countries. Solid fuel combustion in households contributes more than 46% to total emissions of fine particulate matter. In this study, a life-cycle assessment (LCA) of firewood-based and pellet-based heating systems is performed. These two systems represent two different types of individual wood biomass heating systems. In the case of the firewood-based heating systems, it is analyzed a typical stove ...
    Grejanje, Analiza životnog ciklusa, Drvna biomasa, Individualni sistemi grejanja
    ... field of heating sector development towards cleaner technologies [9]. In this study, the LCA of firewood-based and wood pellet-based HSs is performed, as two different types of individual wood biomass-based HSs. A typical stove used in the Serbian household for decades and a modern wood pellet-based ...
    ... considers the environmental aspects and the potential impacts of a product or a service system throughout its life, it becomes a very useful method for researching studies related to the problem of sustainable development, cleaner production, energy savings, and environmental protection. This study ...
    ... important issue that reflects on energy consumption and environmental performance. Deployment of more efficient technologies in the combustion of biomass results in significant benefits for the environment, climate change mitigation, and sustainable development. The obtained results show that wood pellet-based ...

  • OER obrazovni sadržaji kao spona između akademskog i preduzetničkog znanja

    Ivan Obradović, Ranka Stanković, Marija Radojičić (2014)
    ... The International Review of Research in Open and Distance Learning 2(1), 2001. [7] P. McAndrew, A. Santos, S. Godwin. Opening up for OpenLearn: issues in providing open educational resources. In Proceedings of CAL07: Development, disruption and debate – D3, 2007, Dublin, Ireland. [8] A. Margaryan ...
    ... specifično okruženjeza kreiranje i publikovanje OER sadržaja. Sistem se razvija u okviru Tempus projekta BAEKTEL (Blending Academic and Entrepreneurial Knowledge in Technology Enhanced Learning - Spajanje akademskog i preduzetničkog znanja kroz tehnološki potpomognuto učenje)4, čiji je jedan od ciljeva ...
    ... se širio podstakao je UNESCO (United Nation Educational Scientific and Cultural Organisation) da 2002. zvanično prihvati i definiše OER sadržaje. Nešto kasnije, 2007. godine, OECD (Organisation for Economic Cooperationand Development) je objavio studiju o upotrebi i širenju OER sadržaja [4], a formiran ...

  • An Approach to Efficient Processing of Multi-Word Units

    Cvetana Krstev, Ivan Obradović, Ranka Stanković, Duško Vitas (2013)
    Efficient processing of Multi-Word Units in the course of development of morphological MWU dictionaries is not easy to achieve, especially when languages with complex morphological structures are concerned, such as Serbian. Manual development of this type of dictionaries is a tedious and extremely slow process. To alleviate this problem we turned to our multipurpose software tool, dubbed LeXimir, in the production of lemmas for e-dictionaries of multi-word units. In addition to that, we developed a procedure aimed at making ...
    Natural Language Processing, Grammatical Category, Lexical Representation, MWU, multi-word unit
    ... the University of Belgrade Language Technology Group [9] to support computational linguists in developing, maintaining and exploiting e-dictionaries. LeXimir is written in C#, and operates on the .NET platform. It can run on any personal computer under Windows and supports simul- taneous manipulation ...
    ... in the first phase of the development of our procedure and strategy, involving three data sets. The first set consisted of nouns and adjec- tives already available in the existing DELAC dictionaries. The MWU lemmas for dictionary entries were (re)produced by LeXimir and then compared to the (correct) ...
    ... information (DELAF) can be generated from it, and subsequently used in various NLP tasks. Two corpus processing systems that support work with this dictionary format were developed, Unitex [13] and Nooj [20], both of which use finite-state technology as initially introduced in [5]. Serbian e-dictionaries ...

  • Extreme Rainfall Event and Its Aftermath Analysis—IPL 210 Project Progress Report

    Biljana Abolmasov, Mileva Samardžić Petrović, Ranka Stanković, Miloš Marjanović, Jelka Krušić, Uroš Đurić (2021)
    Landslides, Extreme precipitation, Data analysis, IPL project report

  • Data from the Digital Repository of the Faculty of Mining and Geology in eScience (eNauka)

    Biljana Rujević, Mihailo Škorić (2024)
    The paper describes linking the Digital Repository of the University of Belgrade, Faculty of Mining and Geology, with the eScience system in terms of transferring metadata about the results of researchers' scientific work. The steps taken to ensure a smooth harvesting of metadata are outlined. Additionally, a presentation of additional improvements to the OAI system is provided, aiming to contribute to the automatic linking of authors with their results in the eScience system.
    репозиторијуми, еНаука, метаподаци, Рударско-геолошки факултет

  • Fault type assessment based on vertical gravity gradient anomalies – advantages and limitations

    Ivana Vasiljević, Snežana Ignjatović, Branislav Sretković (2024)
    The type of dip-slip faults can be assessed based on the analysis of vertical gravity gradients. Theoretically, just a simple comparation of the gradient extreme values can give us an answer whether the fault is normal or reverse (thrust). Practical application of this method is far more complicated and the results depend on a number of parameters, such as a complexity of geological setting, the quality of gravity data, dip angle and displacement of the fault, density contrast, etc. ...
    dip-slip faults, vertical gravity gradients, field data analysis
    ... valuable in different areas of exploration (Sumintadireja et al., 2018). ACKNOLEDGEMENT The funds are provided by the Ministry of science, technological development and innovation of the Republic of Serbia, based on contract no. 451-03-65/2024- 03/200126. REFERENCES Essa K.S., Gćraud Y., Diraison ...
    ... Petroleum Science and Engineering, 207: 109129 Kusumoto S., 2017: Eigenvector of gravity gradient tensor for estimating fault dips considering fault type. Earth and Planetary Science, 4:15. Rakić M., Dimitrijević M., Terzin V., Cvetković D., Petrović V., 1973: Geological map and Guide book ...
    ... Petrova, Pera Stojkovska, Dimitar Petrov 114 117 125 133 139 148 156 10. HYDROGEOLOGICAL RESEARCH FOR THE WATER SUPPLY NEEDS OF THE CITY OF SREBRENIK, BOSNIA AND HERZEGOVINA Meris Hajdarević, Dinka Pašić-Škripić, Izet Žigić O GG 160 MEPKH H AKTHBHOCTH 3A EJIMMHHHPAMDE HA TIPHTMCOTLIHTE ...

  • 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

  • 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
    ... drinking water supported by the Ministry of Education, Science and Technological Development of the Republic of Serbia. Author Contributions: In this paper, the authors Gordana Milentijević, Blagoje Nedeljković, and Jelena Dokić was provided by research in the field. They also perform analysis and display ...
    ... process, gravity and water flows. Tailing material from the analyzed deposits shows permanent toxic pollution of water and agricultural land [13]. All atmospheric water and waters from tailing ponds are released into the Ibar River through drainage systems in the tailings. The water bodies from the area ...
    ... 18 which are about 100 m and 200 m from the dam and which stop the breakthrough of water towards the dam and its erosion. The composition of the waste is changeable; depending on weather, there is separation of pyrite and pyrrhotite for sulphuric acid production. Cleared water from the tailing pond of ...

  • Application of VIКOR method in the selection of an optimal splution of excavation “Borska Reka” ore deposit

    Sanja Bajić, Dragoljub Bajić, Branko Glušćević, Radmila Gaćina (2023)

  • Hypogene speleogenesis related to porphyry magmatic intrusions and its influence on subsequent karst evolution in the Peruvian high Andes

    Alexander Klimchouk, David Evans, Sasa Milanovic, Cristian Bittencourt, Mauro Sanchez, F. Carlos Aguirre (2022)
    Earth-Surface Processes

  • Development of Integrated Fuzzy Model for Mine Management Optimization

    Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić (2023)
    Technoeconomic, environmental and safety criteria generally affect the management of metallic and non-metallic mining operations. The first basic question that needs to be addressed when planning ore mining is which methods are adequate and what is the optimal mining technology? Due to the complex geologic framework of ore deposits, geological exploration has rendered synonymous the inherent uncertainties, vagueness, and inaccuracies. As a result, subjective evaluation by engineers and expert experience have become increasingly important. Given that the natural language ...
    mining technology, expert evaluation, triangular fuzzy numbers, multicriteria decision making

  • Clockwise vertical-axis rotation in the West Vardar zone of Serbia: Tectonic implications

    Vesna Lesić, Emo Márton, Violeta Gajić, Dragana Jovanović, Vesna Cvetkov (2018)
    The Vardar-Tethyan mega-suture between the Eurasian and Adria (Gondwana) margins comprises remnants of oceanic lithosphere of Neotethys and distal parts of the adjacent continental margins including unconformable Late Cretaceous sedimentary cover and Cenozoic igneous rocks of post-obduction age. This study provides kinematic constraints for displacements and rotations affecting the Serbian part of the West Vardar and Jadar-Kopaonik units after the closure of the Neotethyan (= Sava) Ocean. The targets of the paleomagnetic research were Late Cretaceous sediments representing an ...
    Paleomagnetism, Clockwise rotation, Dinarides, West Vardar zone
    ... lamprophiric and granitoid magma. In S. Karamata & S. Janković (Ed.), Geology and Metallogeny of the Dinarides and the Vardar zone, (pp. 255–267). The Academy of Sciences and Arts of the Republic of Srpska, Collections and Monographs, Book 1, Department of Nature, Mathematical and Technical Science. Prelević ...
    ... Faculty of Mining and Geology, Belgrade, Serbia, 299 pp. (in Serbian). Karamata, S. (2006). The geological development of the Balkan Peninsula related to the approach, collision and compression of Gondwana and Eurasian units. In A.H.F Robertson & D. Mountrakis (Ed.), Tectonic development of the Eastern ...
    ... sedimen- tation of shallow, followed by deeper water carbonates and flysch onto the ophiolites and/or the Jadar–Kopaonik unit, starting in the Cretaceous and ending at around the Creta- ceous-Paleogene boundary (Schmid et al. 2008). After the final closing of the Sava suture, different tectono-magmatic ...

  • The first record of nautiloids (Cenoceras intermedius) from the early Pliensbachian of Rgotina, (Getic nappe, eastern Serbia)

    Paul Țibuleac, Barbara V. Radulović, Marinko Toljić (2020)
    Cenoceras intermedius (J. Sowerby) is one of the most widespread species among the Early Jurassic nautiloid fauna and its geological range still controversial up to the present day. The specimen of Cenoceras intermedius from the sandy bioclastic limestones of Rgotina (Getic nappe of eastern Serbia), is a large half conch representing the phragmocone. Viewing our findings in light of previous results suggests the main morphological changes occurred during the ontogenetic evolution. The coiling starts with a round-square whorl section, ...
    Cephalopoda, Cenoceras intermedius, ontogenetic changes, geological range, northwestern Neo-Tethys, Pliensbachian

  • Towards Semantic Interoperability: Parallel Corpora as Linked Data Incorporating Named Entity Linking

    Ranka Stanković, Milica Ikonić Nešić, Olja Perisic, Mihailo Škorić, Olivera Kitanović (2024)
    U radu se prikazuju rezultati istraživanja vezanih za pripremu paralelnih korpusa, fokusirajući se na transformaciju u RDF grafove koristeći NLP Interchange Format (NIF) za lingvističku anotaciju. Pružamo pregled paralelnog korpusa koji je korišćen u ovom studijskom slučaju, kao i proces označavanja delova govora, lematizacije i prepoznavanja imenovanih entiteta (NER). Zatim opisujemo povezivanje imenovanih entiteta (NEL), konverziju podataka u RDF, i uključivanje NIF anotacija. Proizvedene NIF datoteke su evaluirane kroz istraživanje triplestore-a korišćenjem SPARQL upita. Na kraju, razmatra se povezivanje Linked ...
    paralelni korpusi, povezivanje imenovanih entiteta, prepoznavanje imenovanih entiteta, NER, NEL, povezani podaci, NIF, Vikipodaci

  • Effects of Energy Production and Consumption on Air Pollution in Serbia

    Marija Živković (2019)
    Energy production and combustion, mostly from unregulated or inefficient fuel combustion, are the single most important anthropogenic sources of air pollutant emissions. Energy sector in Serbia is highly fossil fuel intensive: 87.88% of energy consumed in Serbia is related to fossil fuels, while almost 95% of energy sources are combusted. In 2017. energy related carbon dioxide emission in Serbia is was 47.95 million tones. The main source of carbon dioxide emission was coal, responsible for almost 70% of energy ...
    energy related emissions, Serbia
    ... (firewood) for carbon monoxide and NOx from the buildings sector and oil derivates for carbon monoxide and NOx from the transport sector. Key words: energy related emissions, Serbia 1.INTRODUCTION Energy is essential to economic and social development of each community and improved quality of life of citizens ...
    ... electricity and heat generation, as well as from the transport and buildings sectors 6. The transport sector is a major source of air pollutants, despite the many policy and technology advances achieved so far. It is responsible for around half of all energy related nitrogen oxide emissions and is an important ...
    ... air quality, making this the world’s fourth-largest threat to human health, behind high blood pressure, dietary risks and smoking 4. Poverty and fossil fuel-intensive development and urbanization are determined as the main causes of air pollution 4. Emissions can be quantified at the level of total primary ...