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Упит dcterms_subject_txt:rock breakage by explosives

1101 items

  • Geochemical characterization of sediments from the archaeological site Vinča – Belo Brdo, Serbia

    Gorica Veselinović, Dragana Životić, Kristina Penezić, Milica Kašanin-Grubin, Nevenka Mijatović, Jovana Malbašić, Aleksandra Šajnović (2020)
    Earth-Surface Processes

  • Long-term rockslope monitoring and rockfall prediction

    Miloš Marjanović, Biljana Abolmasov, Marko Pejić, Jelka Krušić (2021)

  • Strain partitioning around an indenter during oroclinal bending: kinematics of the Circum-Moesian fault system of the Carpatho-Balkanides

    Nemanja Krstekanić, Liviu Matenco, Uroš Stojadinović, Ernst Willingshofer, Marinko Toljić, Daan Tamminga (2021)
    ... faults splayoff the Timok Fault. These two faults are connected by coeval E-W oriented normal faults thatcontrol several intra-montane basins and accommodate orogen-parallel extension. We infer thatall these deformations are driven by the roll-back of the Carpathians slab that exerts a northwardpull ...
    ... Carpathians. However, the variability in deformationstyles is controlled by geometry of the Moesian indenter and the distance to Moesia, as therotation and northward displacements increase gradually to the north and west. Powered by TCPDF (www.tcpdf.org) http://www.tcpdf.org ...
    ... structural study in order tounderstand the mechanisms of deformation transfer and strain partitioning around the Moesianindenter during oroclinal bending by focusing on kinematics and geometry of large-scale faultswithin the Circum-Moesian fault system. Our structural analysis shows that the major strike-slip ...

  • Geotehnički efekti razaranja komunalnog otpada različitim postupcima zbijanja

    Jovana M. Janković Pantić (2022)
    Odlaganje otpada na komunalne deponije predstavlja osnovni način zbrinjavanja otpada u Srbiji. Kako bi se prostor za deponovanje materijala racionalno koristio potrebno ga je svakodnevno zbijati sa unapred definisanom količinom vode koja se dodaje. Dobro zbijeni komunalni otpad zauzima manju zapreminu i omogućuje sigurnije skladištenje, pa je korisno prethodno laboratorijski odrediti parametre zbijanja: maksimalnu suvu zapreminsku težinu (dmax) i optimalnu vlažnost (wopt). U Srbiji do sada nisu određivani parametri zbijanja, dok je u svetu primenjivana standardna metoda (Proktorov opit) ...
    komunalna deponija, zbijanje, Proktorov opit, malj sa šiljcima, koeficijent razaranja

  • Application of ERT in the study of debris-flow source area: Case study Selanac debris flow

    Dragana Đurić, Jelka Krušić, Biljana Abolmasov (2021)

  • Hydraulic impact of pressure transients from water conveyance tunnel on the complex hydrogeological system: A case study HPP

    Igor Jemcov, Maja Todorović, Aleksandar Jemcov, Marina Ćuk Đurović (2024)
    Tunel pod pritiskom, Unutrašnji pijezometri, Tranzijenti pritiska, Karstna izdan, Pukotinska izdan, Hidraulički odziv
    ... (Table 2). Pore pressure Discussion During the operational regime of the HPP Pirot, the pore pressure response in the rock mass was influenced by hydraulic transients caused by the opening and closing of the turbines. Piezometers that showed reactivity, notably those close to the surge tank, ...
    ... tunnel in different geological environments. This approach involved monitoring of water pressure in the surrounding rock masses and observing the impact of hydraulic transients generated by HPP operation. A comprehensive analysis of monitoring data, incorporating ordinal and partial correlations and ...
    ... emphasized in highly fractured rock masses, where the number of cracks in the lining is directly related to fracture density (Ponimatkin, 1977). Regarding high-pressure tunnels in solid rock, the critical design emphasis should be placed on the surrounding rock instead of the lining, making the ...

  • New data on the age of an Upper Cretaceous clastic-carbonate succession in Brežđe (Western Serbia)

    Nevenka Đerić, Nataša Gerzina (2014)
    Gornja kreda, radiolarije, Jadar blok, zapadni pojas Vardarske zone, zapadna Srbija
    ... investigated area is characterized by extremely com- plex geology. On the geologic map of western and south- Geoli roatica Geologia Croatica 67/3 western Serbia, there are two conspicuous, more or less par- allel, NW-SE oriented belts of ophiolitic mćlange overlain | by large ultramafic massifs. The ...
    ... Turonian sediments arc represented by detrital limestone with marlstonc interlayers, reddish bedded silicified limestone, marly-sandy conglomeratic limestone and reddish marly claystone. Senonian sedimcnts are best exposed in Stru- ganik village. Thcy are represented by a sequence predomi- nantly ...
    ... whole tectonic assemblage is un- conformably overlain by an Albian-Cenomanian shaley, marly and carbonate succession grading to Senonian, which has a shallowing-upward tendency (Fig. 4). The original transgressive relationships are disturbed by a steep-dipping fault along which Triassic limestone ...

  • Damage quantification of built stone on Dark Gate (Belgrade, Serbia): sample of damage index application for decay rate evaluation

    Maja Franković, Nevenka Novaković, Vesna Matović (2015)
    The Dark Gate is the monument of culture, part of the cultural and historical complex of the Belgrade Fortress. It is constructed of limestone blocks that after 270 years of exposure to environmental conditions and different anthropogenic influences show wide ranges of decay forms. During 2007, detail registration of all built limestone microfacies and weathering forms was done using tools of monument mapping. A correlation scheme ‘‘intensity– damage category’’ was made according to the type, intensity, and distribution of ...
    Krečnjak, mapiranje, Indeks raspadanja, brzina raspadanja, progresija
    ... with sparry calcite. The algal biomicsparrudite is a poorly consolidated rock with microsparite bounds with large moldic, vuggy, and interparticular porosity. Last of all built type is Rudstone microfacies repre- sented by coarse-grained rudites regarding their textural features, 1.e., the coarseness ...
    ... Rudstone Fig. 6 The percentage amount of built rock type of the Dark Gate to gate's orientation to the south and north, do not differ considerably among themselves and from the damage indices for the whole gate. Only when the gate is consid- ered by its east and west oriented halves, can be noted ...
    ... evident that algal rudstone microfacies are characterized by loss of stone materials in forms of surface recession and outburst, while grainstone microfacies is marked by relief loss of stone materials and detachment of crust following by granular disintegration and flaking. If we compare lithological ...

  • Agates of the Lece Volcanic Complex (Serbia): Mineralogical and Geochemical Characteristics

    Zoran Miladinović, Vladimir Simić, Nenad Nikolić, Nataša Jović Orsini, Milena Rosić (2024)
    Agate veins and nodules occur in the Lece Volcanic Complex (Oligocene-Miocene) situated in the south of Serbia and occupying an area of 700 km2. This volcanic complex is composed predominantly of andesites, with sporadic occurrences of andesite-basalts, dacites and latites, and features agate formations that have been very little investigated. This study focuses on five selected agate occurrences within the Lece Volcanic Complex, employing optical microscopy, scanning electron microscopy (SEM), X-ray powder diffraction analysis, inductively coupled plasma mass spectrometry ...
    Lecki vulkanski kompleks, andeyit, kalcedon, kvarc, opal-CT, mikrostruktura, organska materija

  • The final closure of the Vardar Ocean: paleomagnetic, AMS and structural results

    Emö Márton, Marinko Toljić, Vesna Lesić, Vesna Cvetkov (2020)
    ... the zone. Acknowledgement. This work was financially supported by the National Development andInnovation Office of Hungary, project K 128625 and by the Ministry of Education and Science of theRepublic of Serbia, project 176015. Powered by TCPDF (www.tcpdf.org) http://www.tcpdf.org ...
    ... The Vardar zone divides units of African affinity from units of the European margin. It ischaracterized by extensional opening of an oceanic domain during the Triassic and Jurassicfollowed by divergent simultaneous obduction of the oceanic litoshphere over the continentalunits in the Upper Jurassic ...

  • The application of ArcGIS for assessing the potential of solar energy in urban area: The case of Vranje

    Boban Pavlović, Milica Pešić-Georgiadis (2019)
    In order to determine the solar energy potential for a specified location, it is crucial to consider the latitude, altitude, slope, terrain morphology, atmospheric conditions, etc. Such a complex calculation and mapping of solar energy can be done using the ArcGIS geoprocessing tool, named Area Solar Radiation (ASR). By using the ASR tool, supported with the adequate input data, it is possible to calculate the maximum solar radiation energy (irradiation) for a defined area and for a specified time ...
    Obnovljivi izvori energije, potencijal solarne energije, GIS, mapiranje solarnog potencijala
    ... The algorithm which is implemented in the SAT is developed and later upgraded by the authors — Paul Rich and Pinde Fu (1999). As the authors of the SAT point out, the calculation and mapping which are enabled by this tool are very useful for the area for which there is no direct measurement ...
    ... diffuse and direct radiation received from each sky direction. The proportion of visible sky area in each sector is calculated by dividing the number of unobstructed cells by the total number of cells in each sector (ESRI, 2019) (Figure 6). It is important to note that solar radiation maps and ...
    ... as a proportion relative to the zenith path length; SunDure„ = The time duration represented by the sky sector. For most sectors, it is equal to the day interval (for example, a month) multiplied by the hour interval (for example, a half-hour (0.5)). For partial sectors (near the horizon), the ...

  • An Italian-Serbian Sentence Aligned Parallel Literary Corpus

    Saša Moderc, Ranka Stanković, Aleksandra Tomašević, Mihailo Škorić (2023)
    This article presents the construction and relevance of an Italian-Serbian sentence-aligned parallel corpus, delving into the aligned sentences in order to facilitate effective translation between the two languages. The parallel corpus serves as a valuable resource for language experts, researchers, and language enthusiasts, fostering a deeper understanding of linguistic nuances and cultural expressions. By bridging the gap between Serbian and Italian, this corpus opens new avenues for cross-cultural communication and collaboration, and ultimately contributes to the improvement of language-related ...
    Aligned corpus, parallel corpus, Serbian, Italian, literature

  • A Description of Morphological Features of Serbian: a Revision using Feature System Declaration

    Cvetana Krstev, Ranka Stanković, Vitas Duško (2010)
    In this paper we discuss some well-known morphological descriptions used in various projects and applications (most notably MULTEXT-East and Unitex) and illustrate the encountered problems on Serbian. We have spotted four groups of problems: the lack of a value for an existing category, the lack of a category, the interdependence of values and categories lacking some description, and the lack of a support for some types of categories. At the same time, various descriptions often describe exactly the same ...
    Morphology, Lexicon, lexical database, Standards for LRs
    ... description, we have prepared two XSLT scripts that transform SrpFSD into descriptions used by Unitex subsystems Elag and Multiflex. The following excerpt from one of the scripts transforms SrpFSD into description used by Elag. This excerpt produces from the FSD described in section 4 the inflectional properties ...
    ... property using different approaches. We propose a new morphological description for Serbian following the feature structure representation defined by the ISO standard. In this description we try do incorporate all characteristics of Serbian that need to be specified for various applications. We have ...
    ... of morphological features, we realized the necessity of producing a comprehensive description that could be easily transformed to any format needed by particular applications. 2. Inadequacies of Existing Descriptions We will illustrate inadequacies of existing morphological descriptions for Serbian ...

  • Demise of the Wetterstein Carbonate Platform and onset of the Dachstein Carbonate Platform recorded in deep-water successions of the East Bosnian-Durmitor megaunit (Pliješevina, northern Montenegro, Dinarides)

    Milica Mrdak, Eva Wagerer, Milan Sudar, Nevenka Djerić, Martin Đaković, Hans-Jürgen Gawlick (2024)
    Triassic, Carnica event, clay mineralogy, conodont biostratigraphy, Neo-Tethys

  • Self-Engineering: Possibilities for Maintenance Operations in the Mining Machines Industry

    Steven Manders, Milorad Pantelić, Vladimir Milisavljević, Alberto Martinetti (2021)
    Self-engineering is a relatively new branch of knowledge that aims to understand how systems could “autonomously” re-configure or repair themselves without the intervention of the operators. A direct field of application is within the maintenance spectrum. Having systems or machines capable of self-detecting or even self-repairing could represent a game-changer, in capital asset fields such as the mining industry in particular. This paper aims to investigate the possible benefits and challenges of self-engineering / self-maintenance concerning mining machines, specifically bucket-wheel ...
    self-engineering, self-maintenance, maintenance operations, mining industry, bucket-wheel excavator, gearbox revitalization

  • Upper Cretaceous scaglia type limestone from Klepa Mts. (North Macedonia) - sedimentology and biostratigraphy

    Violeta Gajić, Milena Dunčić, Ana Mladenović, Dejan Prelević (2024)
    The research area is located in the central part of North Macedonia, in the area of the Klepa Mts. Based on sedimentological, micropaleontological and biostratigraphical investigations of samples from both the east and west side of the Klepa Mts., sedimentary rocks of the Upper Creaceous age are determined. During the latest Cretaceous, this area was dominated by the sedimentation of dominantly carbonate rocks with variable amounts of clastic components. From the tectonic point of view, investigated area belongs to the ...

  • Integrating landslide magnitude in the susceptibility assessment of the City of Doboj, using machine learning and heuristic approach

    Cvjetko Sandić, Miloš Marjanović, Biljana Abolmasov, Radislav Tošić (2023)
    In this work, landslide assessment of the Doboj City area was modeled by combining machine learning and heuristic tools. The machine learning part was used to map the Morphometric factor. i.e. probability of landslides based on relation between the magnitude of events and morphometric parameters: elevation, distance to streams, slope, profile curvature, and aspect. The Random Forest and Support Vector Machines algorithms were implemented in the learning protocol, which included several strategies: balancing of the training/testing set size, algorithm ...
    podložnost na kliženje, magnituda klizišta, mašinsko učenje, heuristički pristup, Doboj

  • Stratigraphic implications of the Mio-Pliocene geodynamics in the area of Mt. Avala: new evidence from Torlak Hill and Beli Potok (Belgrade, Serbia)

    Ljupko Rundić, Meri Ganić, Slobodan Knežević, Dejan Radivojević, Miloš Radonjić (2019)
    Mt. Avala is located on the southern margin of the Pannonian basin (SPB), a border zone between the uplifted morphostructures of the Dinarides and Carpathian-Balkanides. Similar to the Pannonian basin, tectonostratigraphic evolution of the Mt. Avala area during the last 23 Ma has is characterized by syn- and post-rifting processes as well as tectonic inversion. Here, we present the results of field investigations of the Miocene‒Pliocene dynamics that led to different spatial positions of the same stratigraphic units (e.g. ...
    мио-плиоценска геодинамика, јужни Панонски басен, Авалски и Торлак хорст, Белопоточки трог, Србија
    ... beginning with the well-known studies by PAVLOVIĆ (1931) and STEVANOVIĆ (1951), followed by the biostratigraphic articles of KRSTIĆ (1972, 1973, 1985), STEVANOVIĆ (1985, 1990), EREMIJA (1989) and KNEŽEVIĆ (1989). 3. MATERIALS AND METHODS Most of the rock samples have been collected from both banks ...
    ... altitudes up to 336 metres. Nearby, there is the Beli Potok asymmetrical trough that was infilled by the late Miocene sediments. The Torlak horst and the Beli Potok trough struc- tures are separated by the Rakovica normal fault. In some places along the fault line, several geological units are vertically ...
    ... preparation with water and hydrogen-peroxide, some of the specimens were subsequently examined under reflected light by Olympus BH2 microscope. Foraminifers and ostracods were photographed by Leica binocular microscope. Some key micro- fossils were photographed using SEM (JEOL JSM6610LV) at the Department ...

  • 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

  • Availability as a dimension of energy security in the Republic of Serbia

    Boban Pavlović, Dejan Ivezić (2016)
    There is a range of modern approaches and models in literature for the evaluation and determination of energy security, which are based on different parameters and indicators. For most of them, a common characteristic is emphasizing the avail ability of energy, as an important dimension for ensuring energy security. In this paper, concise overview of Serbian energy sectors is given and appropriate energy indicators are defined and determined. Selected indicators provide insight into the main components that characterize availability ...
    raspoloživost energije, energetski indikatori, energetska bezbednost
    ... Availability was considered by using broad definition as diversifying the fuels used to provide energy services as well as the location of facilities using those fuels and minimizing dependence on foreign suppliers. Following this definition, availability is analysed in this paper by five distinct compo- ...
    ... (D) reflects the diversity of used energy sources for energy supply, and the ability to mitigate the risk caused by overdependence on several major energy sources. It can be measured by a diversity index of the possible energy resources for supply, such as the Shannon index (also known as a Shan ...
    ... Technological maturity (TM) can be measured by the set of indicators of efficiency of energy conversion and distribution [8]. Fossil fuel efficiency for electricity generation (TM1a) is defined as the gross production of electricity (including own use of electricity by power plants) from fossil fuel power ...