Претрага

Упит dcterms_subject_txt:mature field

512 items

  • Determination of wather loss from reservoirs in less permeable karst aquifer- case example of left bank of Lazici dam- western Serbia

    Jemcov Igor, Mladenović Ana, Pavlović Radmila, Trivić Branislav, Petrović Dragana, Petrović Rastko (2014)

  • Double traveling valve increases rod-pump efficiency

    Miloš Petrović, Bojan Martinović, Milica Ješić, Miroslav Crnogorac (2023)
    Traditional sucker rod pumps (SRP) use a single traveling valve, but recent double traveling valve innovations have improved SRP performance and efficiency in field applications with double traveling valves installed in pumps with top mechanical seating. The valves sealed better and produced similar fluid volumes compared with the previous single-valve pumps. They also enabled a reduction in pump diameter and optimized usage of surface equipment. Overall, the double travel valve SRPs produced stable production rates and annual production targets.
    дубинска пумпа на клипним шипкама, производња нафте, ефикасност

  • Pre-failure deformation monitoring as rockfall prediction tool

    Miloš Marjanović, Biljana Abolmasov, Zoran Berisavljević, Marko Pejić, Petko Vranić (2021)
    General Engineering
    ... scientific literature, papers, books, etc. related to the field of rock slope monitoring. In addition, commercial industries, especially consulting and monitoring instrument companies have numerous references and case studies completed in this field, sometimes failing to report ultimate findings, which ...
    ... of scanning disposition (right). it is beyond the scope of this article to overview the current research and practice state-of-the-art in the field of LiDAR-based monitoring. Instead, some milestone contributions, after which our idea is inspired, will be briefly overviewed. One of the pioneering ...
    ... site-specific limitations in respect to TLS monitoring. The cliff they monitored turned out to be very active, requiring more than twice-a-year field visits and provided cm displacements within two years of acquisition. They establish the detectable rockfall deformation threshold of 6 cm. They ...

  • Quantitative landslide risk assessment in the city of Tuzla

    Miloš Marjanović, Biljana Abolmasov, Cvjetko Sandić, Miralem Mulać, Petar Begović (2021)
    In the climate-changing conditions, geological environment interacts more dramatically with the urban fabric than before. The urbanization is expansive and more aggressive than before, but so are the weather extremes and long-term climate trends. In effect, many processes which can be triggered by either side, nature or engineering, are becoming more pervasive than before, and such is the case with landslides. Dealing and managing landslides requires few crucial steps, starting from collecting data on landslide location and typology – ...
    "landslides", "risk assessment"
    ... episode triggered during the heavy rainstorm in mid-May 2014. The landslide inventory was compiled by a combination of historic and post-2014 field reports, while all other inputs, including geological, geomorphologic and environmental factors were coming from a separate detailed study on flooding ...
    ... nowadays well defined, but still very versatile depending on the purpose, scale and level of detail (Fell et al. 2008). It is a very proliferating field of research with numerous year-to-year innovations, regarding the techniques for semi-automated landslide inventorying, new algorithms for improved ...
    ... d to that end ● Landslide inventorying: compiling long- term landslide event records throughout the city territory, from geotechnical reports, field campaigns (especially from 2014), remote sensing image analysis; using point or polygon for landslide representation, based on landslide size; filtering ...

  • 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

  • Развој геолошког терминолошког речника ГеолИССТерм

    Ranka Stanković, Branislav Trivić, Olivera Kitanović, Branislav Blagojević, Velizar Nikolić (2011)
    ... semantic description Thesaurus A taxonomy expanded to include additional semantic relationships Index a list of terms specific to a certain field Glossary an index containing definitions of terms Taxonomy A hierarchical organization of terms GeolISSTerm Figure 1. Semantic scale of ter ...
    ... and mean- ingful knowledge. Based on all of the above, it could be said that an ontology defines the words and concepts used for describing a field of knowledge, thereby standardizing meanings. Ontologies are used by humans, databases and applications sharing in- formation from the same domain ...
    ... relationships between those concepts and simple reasoning about a specific domain. It can also be regarded as a data model describing a certain field, namely, a domain and is used for drawing inferences on the basis of the informa- tion stored in the objects within that domain and the interconnections ...

  • Simple 2D gravity–density inversion for the modeling of the basin basement: example from the Banat area, Serbia

    Ivana Vasiljević, Snežana Ignjatović, Dragana Đurić (2019)
    We have developed a technique to calculate lateral density distribution of the sedimentary basin basement by combining linear gravity–density inversion and 2D forward modeling. The procedure requires gravity anomaly data, depth-to-basement data and density data for the sediments (density–depth distribution). Gravity efect of density variations in the basement was extracted from the total gravity anomaly by removing the joint efect of the sediments with vertical density variations and homogeneous basement of average density contrast (calculated by 2D modeling). Gravity ...
    funkcije raspodele gustine, lateralna raspodela gustine, karta gustine podloge

  • BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties

    Marija Šuljagić, Ivan Petronijević, Miljana M. Mirković, Aleksandar Kremenović, Adis Džunuzović, Vladimir B. Pavlović, Aleksandra Kalezić-Glišović, Ljubica Andjelković (2023)
    To investigate the influence of spinel structure and sintering temperature on the functional properties of BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1), NiFe2O4, ZnFe2O4, and Ni0.5Zn0.5Fe2O4 were in situ prepared by thermal decomposition onto BaTiO3 surface from acetylacetonate precursors. As-prepared powders were additionally sintered at 1150 °C and 1300 °C. X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS) were used for the detailed examination of phase composition and morphology. The magnetic, dielectric, and ...
    ferroelectric, dielectric properties, magnetic properties, titanate/ferrite composites, phase composition
    ... Therefore, it is very hard to determine the values of saturation polarization and coercive field from the presented ferroelectric loops [79]. The leakage current density (j) as a function of static electric field (E) on semi-logarithmic plots were presented in Figure 12. The highest value of leakage ...
    ... temperature increased, Figure 4 and Table 2. The change in mass magnetization value in the temperature range from 20 ?C to 600 "C under the magnetic field of 50 kA/m for the sintered samples is presented in Figure 5. Magnetization of BaTiOa/NiFe>Oua and BaTiOax / ZnFe>Oua showed a similar trend upon ...
    ... A“A LE a O I LI I IL I OOO -d 100 200 300 400 500 600 t["C] Figure 5. Temperature dependence of mass magnetization in the applied magnetic field of 50 ka/m for all sintered samples. The relative dielectric constant and the loss tangent as a function of frequency along; with corresponding ...

  • Tectonic evolution of the Circum-Moesian orocline of the Carpatho-Balkanides: Paleomagnetic constraints

    Emő Márton, Vesna Cvetkov, Miodrag Banješević, Gábor Imre, Aleksandar Pačevski (2024)
    Apuseni-Banat-Timok-Srednogorie belt, danubicum, paleomagnetism, oroclinal bending

  • Defining location and dip of magnetic anomaly sources applying mathematical transformation

    Snežana Ignjatović, Milanka Negovanović (2022)
    It is significant to define the location and dip of anomaly sources during the geophysical exploration (magnetic, gravity, electric, seismic, etc.). In this paper we presented results obtained during magnetic survey. Applying different method of mathematical transformations on magnetic data we can find the position (edge) and dip of magnetic anomaly sources. For successful solution of this problem, we used combination two method tilt derivative and upward continuation. The study area located in the eastern Serbia, north part of ...
    magnetic data, tilt derivative, upward continuation, pluton Valja Strž

  • Implementataion of the modern technologies in order to control the drilling an blasting works

    Miljan Gomilanović, Stefan Milanović, Nikola Stanić, Aleksandar Doderović, Nikola Simić (2018)
    U ovom radu prikazanе su mogućnosti primene savremenih tehnologija u oblasti bušenja i miniranja pri površinskoj eksploataciji ležišta mineralnih sirovina, problemi koji se javljaju prilikom izvođenja radova, kao i moguća rešenja i prednosti primene ovih tehnologija.
    bušenje, miniranje, dron

  • Split-Desktop software for the analysis of fragment size distribution of blasted rock mass

    Milanka Negovanović, Lazar Kričak, Stefan Milanović, Jovan Marković, Nikola Simić, Snežana Ignjatović (2023)
    Drobljenje stena je najvažniji pokazatelj u proceni efekata miniranja pri proizvodnom miniranju u površinskoj eksploataciji. Stepen drobljenja stena ima veliki uticaj na efikasnost daljih operacija utovara, transporta, drobljenja i mlevenja. Optimalno drobljenje stena pri proizvodnom miniranju utiče na smanjenje ukupnih troškova proizvodnje. Stoga je pouzdana procena veličine drobljenja odminirane stenske mase veoma važno pitanje, ne samo u operacijama miniranja, već i u rudarskoj proizvodnji. Za predviđanje distribucije veličine komada odminirane stenske mase postoje različiti empirijski modeli. KUZ-RAM model omogućava ...
    Split-Desktop softver, drobljenje stena, miniranje, analiza, digitalna obrada fotografija

  • Synthesis, characterization and photocatalytic examination of Co0.9Ho0.1MoO4 nanopowders

    Milena Rosić, Maja Milošević, Maria Čebela, Vladimir Dodevski, Vesna Lojpur, Radomir Ljupković, Aleksandra Zarubica (2023)
    ... Ceramic Materials Programme and Book of Abstracts of The Seventh Conference of The Serbian Society for Ceramic Materials publishes abstracts from the field of ceramics, which are presented at international Conference. FEditors-in-Chief Dr Branko Matović Dr. Jelena Maletaškić Prof. Vladimir V. ...
    ... procedure (GNP). The synthesized samples were investigated by DTA, X-ray diffraction (KRD), Fourier transform infrared (FT-IR) spectra, Spectroscopy, Field emission scanning electron microscopy (FESEM), and nitrogen adsorption method. The photocatalytic activity of acquired Cop.Hop , MoO, nanopowders ...

  • Defining structural correlation using of total horizontal gradient

    Snežana Ignjatović, Ivana Vasiljević, Milanka Negovanović (2021)
    Gravity data can help to define the structural correlation along significant vertical shifts. The different procedures of mathematical transformations on gravity data are applied to define structural correlations. The paper presents the results obtained using the procedure total horizontal gradient on gravity data. The application of the total horizontal gradient helped to detect contacts with a large dip angle (vertical or subvertical contacts), which can be interpreted as faults. The study area located in the wider area of the ...
    gravity data, gradient, vertical contact

  • The impact of limestone fragmentation on raw mix production in cement industry

    Nikola Đokić, Lazar Kričak, Stefan Milanović, Marinko Pavlović, Stefan Krstić (2021)
    Raw mix design is one of crucial point in production of clinker. Cement industry use limestone, marl, clay in particular percent to provide the best quality in production of clinker. The quality of the material must be in line with the quality targets. Fragmentation is important element, because affect preblending design, economic norm from blasting to crusher. Blasting is an operation which affects all subsequent operations and costs. The Kuz-Ram model is possibly the most widely used approach to ...
    Blasting, Fragmentation, Crusher, Kuz-Ram, Raw Mix

  • Exhumation history of the Juhor Mts. in central Serbia, the Northern Serbo–Macedonian Subunit

    Uros Stojadinovic, Hannah Pomella, Nemanja Krstekanić, Bojan Kostić, Maja Maleš, Nikola Randjelovic, Miloš Radonjić (2024)
    Northern Serbo–Macedonian Subunit, low-t thermochronology, kinematic analyses, extensional deformations

  • A bilingual digital library for academic and entrepreneurial knowledge management

    Ranka Stanković, Cvetana Krstev, Biljana Lazić, Dalibor Vorkapić (2015)
    A generic knowledge management process of organization, storage and retrieval of knowledge can suitably be fitted in a digital library. In the digital and knowledge age digital libraries can be used in knowledge management to handle intellectual assets and support knowledge creation. A multilingual digital library either stores content in more than one language or provides multilingual query access to monolingual content. In Serbia 18 of 308 scientific journals regularly published are bi-lingual, with papers simultaneously being in English ...
    Knowledge management, Digital library, Multilingualism, Language Resources, Terminology
    ... text collections). The user enters the search criteria in the search field, then adds additional criteria by clicking the “+” sign. Boolean operators “OR” and “AND” build the search query. “AND” is used for different search field categories e.g. author's names and year of publication, while “OR” ...
    ... useful services. (Chen, 2004). Having in mind that a terminology research consists of: analyzing the concepts and concept structures used in a field or domain of activity, identifying the terms assigned to the concepts and in the case of bilingual or multilingual terminology, establishing co ...
    ... “OR” is used for the same search category e.g. two author's names field. The example in Figure 4 shows how the system retrieves all articles from all collections published in 2012 or 2014, whose authors are “Ranka” or “Cvetana” and the result is presented in English. 13 ...

  • Building Terminological Resources in an e-Learning Environment

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... Institute [9]. This dictionary has been used for almost three decades as the main reference, especially for translators of works published in this field. A newer edition was not printed, despite the fact that the development of mining engineering has generated many new terms and has also made some ...
    ... semantic description Thesaurus A taxonomy expanded to include additional semantic relationships Index a list of terms specific to a certain field Glossary an index containing definitions of terms Taxonomy A hierarchical organization of terms RudOnto Figure 1: Semantic scale of ter ...
    ... Terminology is an important issue in the learning process as students need to be acquainted with the proper use and meaning of terms in the field of their study. In addition to that, especially in the case of the so-called "minor" languages, such as Serbian, it is of paramount importance to ...

  • Back-arc underplating provided crustal accretion affecting topography and sedimentation in the Adria microplate

    Paolo Mancinelli, Vittorio Scisciani, Cristina Pauselli, Gérard M. Stampfli, Fabio Speranza, Ivana Vasiljević (2021)
    Supported by evidence of deep crustal sources for the observed magnetic anomalies in Central Italy and by outcropping gabbros in the Croatian archipelago, we model the observed gravity and magnetic anomalies in the Central Adriatic Sea and surroundings. We suggest that the major magnetic anomalies in the area are related to a wide underplating and propose that this volume represents the first stage of the back-arc Adria continental breakup in Early Permian times. During the Palaeotethys-Adria collision, underplating has ...
    Underplating, akrecija kore, Magnetske anomalije, Jadranska ploča

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

    Vladimir Simić, Rade Jelenković, Dragana Životić (2019)
    ... * – Literature data indicated with small letters: b, c, and e in the superscript are mostly related to approximate concentrations of metals in mature leaf tissue (generalized for various species); a - Vamerali et al. (2010); b - Alloway (2013); c - Kabata-Pendias and Pendias (2001); d - Nagajyoti ...
    ... importance for regulating this field. The harmonization of legal acts in the field of environmental and nature protection with the acts of the European Union, which is still in progress, enabled implementation of European and international standards in the field of environmental and nature protection ...
    ... the trail, which was set in the plots of the Institute of Field and Vegetable Crops in Novi Sad, Serbia in the two production years (2016 and 2017).Trials were set up in four repetitions on the experimental field of the Institute of Field and Vegetables Crops, located in Bački Petrovac (q) N 45%20' ...