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Упит dcterms_subject_txt:seismic effects of blasting

2840 items

  • The state and perspective of the natural gas sector in Serbia

    Dejan Ivezić, Marija Živković, Dušan Danilović, Aleksandar Madžarević, Miloš Tanasijević (2016)
    The strategy of long-term energy development of Serbia identifies an increase of share of natural gas in final energy consumption as one of the main aims. Serbia has signed a strategic agreement with the Russian Federation on cooperation in the oil and gas sector, within which the project South Stream pipeline is planned to be realized. In addition, the Republic of Serbia has signed the Treaty that establishes the Energy Community and accepted the obligation to implement the Energy ...
    Consumption, natural gas, scenarios of development

  • Hyperpycnites within the Devonian-Carboniferous flysch of the Carpatho-Balkanides (Kostadinovica, eastern Serbia)

    Miloš Radonjić (2020)
    This study presents new discoveries of vascular plants and the trace fossil Dictyodora liebeana (GEINITZ) from the Devonian–Carboniferous Kučaj-Zvonce flysch of the Carpatho-Balkanides and the implications of this fossil association for its sedimentary setting. The occurrence of the described plant debris in a deep-marine environment indicates the presence of hyperpycnites within the siliciclastic turbidites exposed at the Kostadinovica locality. The sedimentological data and the characteristics of the fossil material support the proposed model in which the sediment was at ...
    Mississippian flora, Dictyodora liebeana (GEINITZ), hyperpycnites, Kučaj-Zvonce flysch, Carpatho-Balkanides
    ... at an angle of 40 to 50°. Varia- tions of the dip directions of bedding planes and their dip angles are due to the deformed state of the whole unit. Deformational fabrics are composed of a series of cleavages which significantly disrupt the primary sedimentary structures. Development of seve- ral ...
    ... modes of transport was limited by the insufficient quantity of the obtained sedimentological samples. This led to the use of fossils as an in- dicator of hyperpycnal transport. The presented study could be used as a starting point for a more detailed petrological analysis of the provenance of the ...
    ... section was used for the construc- tion of a local sedimentological column (Fig. 3). 3.1. Unit A (interval: 0 to 2.10 m of the column) Stratigraphically the lowest unit (A) of the succession is exposed in the NE side of the quarry and is composed of a series of nor- mally graded turbidites (Fig. 4) ...

  • Laboratory testing of fly ash

    Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić (2016)
    Fly ash is one of the most common waste materials created by burning of coal. It is composed of smaller particles, consisting mainly of aluminosilicate glass, mullite and quartz, which are collected by electrostatic separators (filter) of gaseous products arising from the combustion of coal. This paper presents the pozzolanic properties, mechanical properties, chemical and mineral composition of fly ash obtained in the combustion process in a power plant Nikola Tesla A (PPNT A) with the addition of a ...
    chemical composition, fly ash, mechanical properties, mineral properties, pozzolanic properties, X-ray diffraction
    ... - the modulus of elasticity. The aim of research is to test the possibility of using the fly ash from PPNT A for making elements of road structures (top and bottom layers of the road). 2 Experimental 2.1 Mineral properties of fly ash Mineral properties of samples of fly ash from thermal ...
    ... the addition of a binder hydrated lime and cement. Tests were performed after 7 and 28 days in a humid environment with different amounts of extra binder: - samples without the addition of binders, - a sample with the addition of 2 % of binder, - a sample with the addition of 4 % of binder, - ...
    ... the field of small- angle 2θ (8 ÷ 15°) and 29 ÷ 30° 2θ. Namely, in the area of small angles, a series of insufficiently defined peaks of very low intensity, which indicate the beginning of crystallization of new phases, according to the data could match the compounds from the group of hydrated Ca ...

  • 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 ...
    ... on 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 structures that form a block structure of investigated ...
    ... embankments height of 0.5 to 1.5 m (locally, in the case of bridges approaches, embankments of higher heights are designed). The groundwater level is at depth over 5.0 m, and only in the zones of smaller streams is at depth of about 2.0 m. In geotechnical sense, most of the route is estimated ...
    ... Due to the construction of larger number of bridges, and because this section is built of solid rock masses, most of the section is characterized as favourable - A (around 70%), and 27% as conditionally favourable – B. Due to the height of embankments and use of geosynthetics for their ...

  • Application of the VIKOR Method for Selecting the Purpose of Recultivated Terrain after the End of Coal Mining

    Radmila Gaćina, Sanja Bajić, Bojan Dimitrijević, Tomislav Šubaranović, Čedomir Beljić, Dragoljub Bajić (2024)
    reclamation, coal, sustainable development, multi-criteria decision making, VIKOR method

  • Investigation of quantitative indicators of anisotropy based on longitudinal elastic waves propagation velocities with uncertainty

    Miloš Gligorić, Jelena Majstorović, Suzana Lutovac (2018)
    ... same for both approaches of determining the degree of anisotropy. The existence of that high similarity clearly indicates that it is an isotropic medium. During modelling of the anisotropic rock masses, knowing of the quantitative indicators of anisotropy would be of great use for creating reliable ...
    ... indicators of anisotropy: anisotropy coefficient K and degree of anisotropy D. The following section provides a detailed description of the concept of calculation and formulas. There are several ways to determine the degree of anisotropy and anisotropy coefficient. Our investigation of the degree ...
    ... calculation of degree of anisotropy is divided into two parts. First part is referred to determination degree of anisotropy for each special sample. The second part shows determination degree of anisotropy for each special direction. The next part of calculation process describes investigation of anisotropy ...

  • 3D modeling and monitoring of karst system as a base for its evaluation and utilization: a case study from eastern Serbia

    Saša Milanović, Zoran Stevanović, Ljiljana Vasić, Vesna Ristić-Vakanjac (2013)
    Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • Softverski alati za korišćenje resursa za srpski jezik

    Ivan Obradović, Ranka Stanković (2008)
    ... s in LADL format, none of them of- fered possibilities for management of the content of the dictionaries themselves. Thus a module was developed within WS4LR for the entry, re- view and update of lemmas of simple words and compounds, which supports the specific features of all three solutions (Intex ...
    ... management of dictionaries of simple words IVAN OBRADOVIć, RANKA STANKOVIć 49a The system of morphological dictionaries sup- ports the distribution of the dictionaries, namely enables the distribution of lemmas in several dic- tionaries, such as the dictionary of toponyms or dictionary of proper names ...
    ... May 2008 operates under the auspices of the Faculty of Mathematics of the University of Belgrade and gathers researchers in this field from several Fac- ulties. The most important and the most devel- oped among them is the system of morphological dictionaries of Serbian (SMD). Another highly important ...

  • Coal homogenization stockyard sizing “Tamnava – Zapad” case study

    Božo Kolonja, Dinko Knežević, Ranka Stanković, Dejan Stevanović, Detlef Trummer (2016)
    ... length, width and height of the stacked coal are sized. In these considerations the problem of self-inflaming of coal, availability of space, availability of funding, etc., are not taken into account. Only the technical and technological parameters affecting the size of the pile and stockyard are ...
    ... the operation of the stacking and reclaiming equipment. The output sequence of property values reflects the quality of the coal after blending. Case study from northern Greece mines show that coal-blending efficiency is a function of the capacity of the stockpile, the number of stockpile layers ...
    ... considering the level of data confidence and exploration of the deposit. This increases the number of stacking layers. In the example shown in Figure 1 it can be seen that for a range of 300 kJ/kg the number of layers should be around 50, while for an extremely small range of 200 kJ/kg more than ...

  • WebGIS Cadastre of Abandoned Mines in Autonomous Province of Vojvodina

    Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2015)
    ... overview of the use of the application on the basis of log data (logons) and data entry, as well as the number of visits of the site using Google analytics. Statistics of mining facilities and results of remote sensing by property type, by district, municipality, by mineral resource or method of re ...
    ... vulovic@rgf.bg.ac.rs 3 University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia, nikola.lilic@rgf.bg.ac.rs 4 University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia, ivan.obradovic@rgf.bg.ac.rs 5 University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia ...
    ... the territory of the Republic of Serbia. Keywords: WebGIS, Geodatabase, Abandoned mines, Mine reclamation. 1. INTRODUCTION Project "Cadastre of abandoned mines on the territory of the Autonomous Province of Vojvodina and accompanying database" was realized by University of Belgrade, Faculty ...

  • SASA Dictionary as the Gold Standard for Good Dictionary Examples for Serbian

    Ranka Stanković, Branislava Šandrih, Rada Stijović, Cvetana Krstev, Duško Vitas, Aleksandra Marković (2019)
    У овом раду представљамо модел за избор добрих примера за речник српског језика и развој иницијалних компоненти модела. Метода која се користи заснива се на детаљној анализи различитих лексичких и синтактичких карактеристика у корпусу састављених од примера из пет дигитализованих свезака речника САНУ. Почетни скуп функција био је инспирисан сличним приступом и за друге језике. Дистрибуција карактеристика примера из овог корпуса упоређује се са карактеристиком дистрибуције узорака реченица ексцерпираних из корпуса који садрже различите текстове. Анализа је показала да ...
    Српски, добри примери из речника, аутоматизација израде речника, издвајање својстава, Машинско учење
    ... Interlinking of related words is envisaged as more explicit, on the level of lexical units (senses), which will enable the reuse of dictionary content that already exists in the database. The fine-grained structure of the database enabled the creation of a dataset of examples supported by a set of related ...
    ... left side each volume of SASA dictionary is represented by a histogram with parts of speech in different colours. The right-hand side shows histograms of partitions of the control dataset. Figure 1: The histogram of the number of words in examples. 260 Proceedings of eLex 2019 The ...
    ... for selection of good dictionary examples for Serbian and the development of initial model components. The method used is based on a thorough analysis of various lexical and syntactic features in a corpus compiled of examples from the five digitized volumes of the Serbian Academy of Sciences and Arts ...

  • An Integrated Environment for Management and Exploitation of Linguistic Resources

    Ranka Stanković, Ivan Obradović (2009)
    ... as functions of this web application are es- sentially also functions of WS4LR. WS4LR provides for the management and development of the system of morphological dictionaries as well as of wordnets, where both manipulation of individual wordnets and synchronized use of wordnets for ...
    ... The most important feature of the dictionary manage- ment module is the possibility of very efficient search of dictionaries, namely of finding subsets of lemmas based on different criteria. Fig. 1 depicts a form for management of dictionaries of simple words. Within this form, lemmas ...
    ... establishment of a relation with another important resource, the SWN. Fig. 1 Simple words dictionary management The basic principles of search and management of data in dictionaries of compounds are the same as for the dictionar- ies of simple words. However, dictionaries of compounds ...

  • History of meteorite donations to the Collection of Minerals and Rocks of the University of Belgrade, Faculty of Mining and Geology (Serbia)

    Alena Zdravković, Maja Milošević, Kristina Šarić, Ivana Jelić, Ana Černok (2021)
    ... History of meteorite donations to the Collection of Minerals and Rocks of the University of Belgrade, Faculty of Mining and Geology (Serbia) Alena Zdravković1, Maja Milošević1, Kristina Šarić1, Ivana Jelić2, Ana Černok3 1Faculty of Mining and Geology, University of Belgrade, Belgrade ...
    ... principal collection of the Mineralogical Museum of the Great School of Belgrade was divided into two and all the meteorite samples of the Serbian recorded falls became the inventory of the newly established Natural History Museum in Belgrade. Fortunately, new collections of minerals and meteorites ...
    ... labels was also very useful. The numbering of the samples and confirmation of the label names were done in 2014, thanks to the cooperation with Mr. Guy Consolmagno, curator of the Vatican Observatory and on the basis of a copy of the original Catalogue of the entire Mauroy's private meteorite collection ...

  • Permanent GNSS monitoring of landslide Umka

    Mileva Samardžić Petrović, Jovan Popović, Uroš Đurić, Biljana Abolmasov, Marko Pejić, Miloš Marjanović (2020)
    Клизиште Умка је једно од највећих насељених активних клизишта у Србији. Активност клизишта Умка се прати већ више од 85 година, различитим геотехничким и геодетским техникама. Од 2010. године, активност kлизишта се континуирано прати у реалном времену аутоматизованим перманентним системом за праћење базираним на Глобалним навигационим сателитским системима (ГНСС). Поред тога, од 2018. године активност клизишта се додатно прати кинематичким ГНСС одређивањем положаја скупа карактеристичних тачака као и применом UAV фотограметрије. Главни циљ овог рада је приказ резултата опажања три ...
    клизиште, перманентно праћење, ГНСС
    ... Faculty of Civil Engineering, University of Belgrade Uroš Đurić, udjuric@grf.bg.ac.rs, Faculty of Civil Engineering, University of Belgrade Biljana Abolmasov, biljana.abolmasov@rgf.bg.ac.rs, Faculty of Mining and Geology, University of Belgrade Marko Pejić, mpejic@grf.bg.ac.rs, Faculty of Civil ...
    ... stability monitoring“, financed by Ministry of Education, Science and Technological Development of the Republic of Serbia, and the collaboration between University of Belgrade, Faculty of Mining and Geology and Faculty of Civil Engineering, Institute of Transportation CIP, The Highway Institute ...
    ... monitored by GNSS kinematic positioning of a set of characteristic points as well as by UAV (Unmanned Aerial Vehicle) photogrammetry. The main issue of this paper is the presentation of the results gained with GNSS kinematic positioning of characteristic points of Umka landslide within three observation ...

  • Hydrogeochemical distribution of Ca and Mg in groundwater in Serbia

    Petar Papić, Jovana Milosavljević, Marina Ćuk, Rastko Petrović (2014)

  • 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
    ... determining, the age of this spring, was of great importance for defining, the conditions of groundwater formation and the depth of groundwater circulation. The thermal spring is located at a distance of about 50 m from the cold Krupaja Spring; it emerges at an altitude of 215 m above sea level ...
    ... summer and autumn period of 2015 shows high groundwater age, that is, it excludes the intrusion of fresh water, which may be a consequence of the small amount of water that infiltrated into the system during the spring, period of 2015 (explaining the difference in the maxima of 2014 and 2015). In ...
    ... conditions of the Creative Commons Attribution (CC BY) license (https:/ / creativecommons.org//licenses/by/ 4.0/). Faculty of Mining, and Geology, University of Belgrade, Djusina 7, 11000 Belgrade, Serbia; sasa.milanoviceorgf.bg.ac.rs Faculty of Civil Engineering, University of Belgrade, Bulevar ...

  • Model of the Geomagnetic reference field of the Republic of Serbia

    Spomenko J. Mihajlović, Vesna Cvetkov (2024)

  • INVENTS: A Hybrid Mine Ventilation Planning and Design System

    Lilić Nikola, Stanković Ranka, Obradović Ivan (2013)
    Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper we ...
    hybrid systems, mine ventilation, expert systems
    ... diagram of the novel design concept The outlined system (Figure 3) permits an aerodynamic definition of mine ventilation network based on psychrometric recordings and the use of ResNet software, i.e. the establishment of actual aerodynamic resistance of mine chambers and thus the configuration of the ...
    ... detailed analysis of necessary airflow volumes for the ventilation of individual workplace locations, often with a very complex geometry. The application of CFD software improves the reliability and quality of the apprehension and verification of air amounts needed for the ventilation of workplaces. ...
    ... Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs Proceedings of International Scientific Conference of FME Session 4: ...

  • INVENTS: a hybrid system for subsurface ventilation analysis

    Nikola Lilić, Ranka Stanković, Ivan Obradović (2000)
    Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper we ...
    ... diagram of the novel design concept The outlined system (Figure 3) permits an aerodynamic definition of mine ventilation network based on psychrometric recordings and the use of ResNet software, i.e. the establishment of actual aerodynamic resistance of mine chambers and thus the configuration of the ...
    ... detailed analysis of necessary airflow volumes for the ventilation of individual workplace locations, often with a very complex geometry. The application of CFD software improves the reliability and quality of the apprehension and verification of air amounts needed for the ventilation of workplaces. ...
    ... Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs Proceedings of International Scientific Conference of FME Session 4: ...

  • Testing the energy value of different types of coal by the method of active thermography

    Stevan Đenadić, Ljubiša Tomić, Vesna Damnjanović, Predrag Jovančić, Dragutin Jovković (2020)
    In this paper, coal thermograms are presented and analyzed in order to determine their energy value. Two types of coal of different categories, brown and lignite, were selected for active thermographic imaging. The tested coal samples were processed before measurement so that they are similar in dimensions and have two plane-parallel smooth surfaces. The test samples were "primarily" heated under the same conditions and the process of their cooling was monitored by a thermal camera. "Then" they were cooled ...
    Infrared imaging, nondestructive testing, active thermography, coal.