Претрага
2166 items
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A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)
... study area, their interactions, and groundwater flow conditions. Based on geologic and hydrogeologic exploration, and analysis and synthesis of the collected data, the paper describes hydrogeologic modeling of the open-cast mine Tamnava – West Field. The software used in the research provides a portrayal ...
... distribution of hydrostratigraphic units) and hydrogeologic parameters of the porous medium, followed by specifying initial and boundary conditions and selecting the numerical method to be applied (Krešić, 2006; Krešić and Mikszewski, 2012). 4. RESULTS The software used in this research, to create the ...
... Field. Supported by suitable software, the model made it possible to distinguish and show individual lithologic members and provide an unlimited number of hydrogeologic cross-sections. By way of illustration, Fig. 3 shows the spatial distribution of the upper, intermediate and lower aquifers from different ...Jelena Ratković, Dušan Polomčić, Dragoljub Bajić, Bojan Hajdin. "A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)" in Underground Mining Engineering no. 29, Belgrade : University of Belgrade - Faculty of mining and geology (2016): 43-54
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Coal homogenization stockyard sizing “Tamnava – Zapad” case study
... shortening or lengthening the pile can resolve the problem. Figure 3. Zones of continuous and discontinuous stacker operation Software application comprises the components for stacking and reclaiming, for Tamnava West using Strata model, as presented in the figure. α β α1 α2 αn ϕ Figure ...
... Zbornik radova OMC 2014, str. 225-236 5. Pavloudakis, F. and Agioutantis, Z., 2001. Development of a software tool for the prediction of the coal blending efficiency in longitudinal stockpiles. In Proc. 17th Int. Mining Congress and Exhibition of Turkey, Ankara, Turkey, June, Chamber of Mining ...
... assessing the uncertainty associated with the attributes content in the ore. A software tool for the prediction of the coal blending efficiency in longitudinal stockpiles takes as input the standard deviation and the autocorrelation of the coal property (for blending), then the program initially ...Božo Kolonja, Dinko Knežević, Ranka Stanković, Dejan Stevanović, Detlef Trummer. "Coal homogenization stockyard sizing “Tamnava – Zapad” case study" in Proceedings of 13th International Symposium Continuous Surface Mining, ISCSM 2016, / (2016)
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Determining the Availability of Continuous Systems at Open Pits Applying Fuzzy Logic
This work presents a model for determining the availability of continuous systems at open pits by applying fuzzy logic and fuzzy inference systems. The applied model was formed by the synthesis of independent partial indicators of availability. The model is based on an expert system for assessing the availability of continuous mining systems. The availability of the system, as a complex state parameter, is decomposed into the partial indicators, reliability, and convenience of maintenance, and the fuzzy compositions, used ...системи, континуални систем експоатације, површински коп, рударство, расположивост, фази логика, max–min композиција, min–max композицијаMiljan Gomilanović, Miloš Tanasijević, Saša Stepanović. "Determining the Availability of Continuous Systems at Open Pits Applying Fuzzy Logic" in Energies, MDPI AG (2022). https://doi.org/10.3390/en15186786
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Review: Methodological approaches and research techniques for addressing construction and remediation problems in karst reservoirs
Saša Milanović, Ljiljana Vasić (2021)Saša Milanović, Ljiljana Vasić. "Review: Methodological approaches and research techniques for addressing construction and remediation problems in karst reservoirs" in Hydrogeology Journal, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s10040-020-02280-1
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Pre-failure deformation monitoring as rockfall prediction tool
... comprised of: • Data processing in Leica Cyclone software (target and surface matching registration, surface matching georeferencing relative to zero epoch, segmentation and cloud cleaning, unifying to 3cm spatial resolution). • Using CloudCompare software plug-in CANUPO classifier [11] to clean rest ...
... epoch and also vs. “zero” scan using CloudCompare software functionalities. In this particular case, a medium-sized rockfall event was isolated for the analysis (figure 2) and accordingly sub-selected from the main cloud by using constant polygon for clipping all sequence point clouds and preserve ...
... allows planning, prevention and protection, and there is a great deal of interest to standardize it for high-risk slopes and cuts in rock masses. 1. Introduction Rockfalls are studied from various aspects and should be first observed from a wider, geo-structural and geomorphological context, ...Miloš Marjanović, Biljana Abolmasov, Zoran Berisavljević, Marko Pejić, Petko Vranić. "Pre-failure deformation monitoring as rockfall prediction tool" in IOP Conference Series: Earth and Environmental Science, IOP Publishing (2021). https://doi.org/10.1088/1755-1315/833/1/012197
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Age of the Jurassic hemipelagic sediments from the Ljubiš area (Zlatibor Mt., SW Serbia)
Nikita Bragin, Nevenka Đerić (2020)... English language of the manuscript. Lastly, we would like to pay our gratitude and our respects to our friend and col league, Nataša GERZINA. After many joint fieldtrips, Nataša GERZINA passed away in June 2019. The study would not have been possible without the extraordinary knowledge and collabo ...
... deposits are common and wide spread in the territory of western and southwestern Serbia. Meso zoic radiolaria are found in pelagic and hemipelagic sediments deposited on the Neo-Tethys ocean floor, intercalated between Triassic shallow-water carbonate ramp and platform sediments, and are widespread ...
... mélange and Sirogojno Mélange), and belong to the parautoch thonous sequences between the Drina–Ivanjica Unit to the east and the East Bosnian Durmitor Unit to the west (GAWLICK et al., 2017). 3. SECTION DESCRIPTION AND BIOSTRATIGRAPHY The studied section is located in Donji Ljubiš Village and starts ...Nikita Bragin, Nevenka Đerić. "Age of the Jurassic hemipelagic sediments from the Ljubiš area (Zlatibor Mt., SW Serbia)" in Geologia Croatica, Croatian Geological Survey (2020). https://doi.org/10.4154/gc.2020.11
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Laboratory testing of fly ash
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... it belongs to silicate ash, - fly ash and slag have pozzolanic properties and belong by the test standard SRPS B.C1.018 2001 in Class 5 of pozzolanic materials, but according to standard ASTM classification the investigated ashes belong to artificial-industrial pozzolan of class F. Laboratory ...
... Pozzolanic properties of the fly ash are tested in the laboratory for concrete and binders in the "Highway Institute". According to standard (SRPS B.C1.018 2001 [15]), pozzolanic materials are natural or artificial, silicate, silicate-aluminate, silicate-carbonate substances or their combination ...
... b) Cement (C) 3.4 Pozzolanic properties of fly ash Based on the sum of oxides SiO2, Al2O3, Fe2O3, and according to the ASTM classification, tested ashes belong to class F artificial-industrial pozzolanics. Having in mind that the tests are not carried out on samples of the ash that was ...Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić. "Laboratory testing of fly ash" in Tehnički vijesnik (2016). https://doi.org/10.17559/TV-20150317171035
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Еоценска фауна југозападног дела Сирт басена (Либија)
Љупко Рундић, Мери Ганић (2020)Љупко Рундић, Мери Ганић. "Еоценска фауна југозападног дела Сирт басена (Либија)" in Записници Српског геолошког друштва, Српско геолошко друштво (2020)
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Project BEWARE—Landslide Post-disaster Relief Activities for Local Communities in Serbia
Biljana Abolmasov, Dobrica Damjanović, Miloš Marjanović, Ranka Stanković, Velizar Nikolić, Sandra Nedeljković, Žarko Petrović (2017)... portal in pdf. format and it could be open for everybody. Each of 25 municipalities was supplied with the hardware and software components for tablets and desktop computers, topographic and geological maps and GPS (Fig. 7). 3. BEWARE Project portal—BEWARE web portal was launched and hosts all project ...
... rainfall data analysis, satellite data analysis, landslide susceptibility assessment for each municipality, news and information etc. Addi- tionally, mobile software application for tablets and android mobile phones was created for supporting local communities in effective landslide reporting. BEWARE ...
... grouped together) and included the- oretical and practical (field work) demonstration. BEWARE Project Brochure and other supplementary material were prepared and printed and distributed during the 2-days Fig. 3 Pert Chart of BEWARE project Fig. 4 Opening ceremony of 2nd ReSyLAB and Start up meeting ...Biljana Abolmasov, Dobrica Damjanović, Miloš Marjanović, Ranka Stanković, Velizar Nikolić, Sandra Nedeljković, Žarko Petrović. "Project BEWARE—Landslide Post-disaster Relief Activities for Local Communities in Serbia" in Advancing Culture of Living with Landslides, Proceedings of 4th World Landslide Forum, Ljubljana 29 May-02 June 2017 3, Berlin : Springer Interantional (2017). https://doi.org/10.1007/978-3-319-53487-9_48
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‘Blue-’ and ‘Brown-speckled’ pottery from Qalhât, the Sultanate of Oman (13–16th centuries): Comparison with traditional Omani 19–20 century productions
Representative ‘Blue speckled’ (13–16th centuries) and ‘Brown speckled’ (13–21st century) wares recovered from the excavations in Qalhât or collected around Bahlâ city (Sultanate of Oman) were characterized by XRPD, SEM-EDS, Raman/optical microspectroscopy, and thermal expansion. Minerals present in the body (quartz, augite and albite as major phases, calcite, dolomite, rutile, anatase, phosphate, hematite and magnetite as minor phases) were identified by XRPD and/or Raman spectroscopy. SEM-EDXS microanalysis was performed on the glazes in order to compare their composition, especially ...Liliana Gianni, Hélène Renel, Aleksandar Kremenović, Philippe Colomban. "‘Blue-’ and ‘Brown-speckled’ pottery from Qalhât, the Sultanate of Oman (13–16th centuries): Comparison with traditional Omani 19–20 century productions" in Boletín de la Sociedad Española de Cerámica y Vidrio, Elsevier BV (2020). https://doi.org/10.1016/j.bsecv.2020.06.005
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Influence of DEM resolution on numerical modelling of debris flows in RAMMS - Selanac case study
Debris flows induced by intensive rainfall represent very hazardous phenomena in many parts of the World. Methods for prediction of runout distance of flow like mass movements are different and depending on the input data, rheology, and available or appropriate numerical solution. However, sometimes it is not easy to obtain pre event and post event high-resolution data in the rural or mountainous area. Thus, the topology of terrain is the most important input parameter for the every real case ...... on path. RAMMS DBF software is FVM (Finite Volume Method) based software for modelling of debris flows. RAMMS was developed in 2005 by the Swiss Federal Institute for Forest, Snow and Landscape Research (WSL, Birmensdorf) and the Swiss Federal Institute for Snow and Avalanche Research (SLF ...
... height H (x, y,t) and flow velocity U (x, y,t) and is given by: 𝑄(𝑥, 𝑦, 𝑡) ˙ = 𝜕𝑡𝐻 + 𝜕𝑥 (𝐻 𝑈𝑥 ) + 𝜕𝑦 (𝐻 𝑈𝑦 ) (1) where Q(x, y,t) ˙ describes the mass production source term, and Ux and Uy represent the depth- averaged velocities in horizontal directions x and y (Christen ...
... source zone (30m), and length of about 1.5km. First results were made using 30x30m DEM as input, and another with much more precise 5x5m DEM. New UAV scanning of post event topology was obtained in 2017 and additionally had helped in defining precise dimension of release, erosion and deposition zones ...Jelka Krušić, Biljana Abolmasov, Mileva Samardžić Petrović. "Influence of DEM resolution on numerical modelling of debris flows in RAMMS - Selanac case study" in 4th Regional Symposium on Landslides in the Adriatic Balkan Region, 23-25 October 2019, Sarajevo, Bosnia and Herzegovina, Geotechnical Society of Bosnia and Herzegovina (2019). https://doi.org/ 10.35123/ReSyLAB_2019
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Photocatalytic Activity of the V2O5 Catalyst toward Selected Pharmaceuticals and Their Mixture: Influence of the Molecular Structure on the Efficiency of the Process
Sanja J. Armaković, Aleksandra Jovanoski Kostić, Andrijana Bilić, Maria M. Savanović, Nataša Tomić, Aleksandar Kremenović, Maja Šćepanović, Mirjana Grujić-Brojčin, Jovana Ćirković, Stevan Armaković (2023)Due to the inability of conventional wastewater treatment procedures to remove organic pharmaceutical pollutants, active pharmaceutical components remain in wastewater and even reach tap water. In terms of pharmaceutical pollutants, the scientific community focuses on -blockers due to their extensive (over)usage and moderately high solubility. In this study, the photocatalytic activity of V2O5 was investigated through the degradation of nadolol (NAD), pindolol (PIN), metoprolol (MET), and their mixture under ultraviolet (UV) irradiation in water. For the preparation of V2O5, facile ...DFT analysis, metoprolol, nadolol, nanomaterial characterization, photocatalysis, pindolol, β-blocker... resources, S.A.; software, S.J.A. and S.A.; supervision, S.J.A. and S.A.; validation, S.J.A., A.B., M.M.S., M.G.-B. and S.A.; visualization, S.J.A., A.J.K., A.B., M.M.S., N.T., M.Š., M.G.-B. and S.A.; writing—original draft, SJ.A., AJ.K., A.B., M.M.S., N.T., M.Š., M.G.-B. and S.A.; writing—srevision ...
... A modular and open-source software project for quantum simulations of materials. J. Phys. Condens. Matter. 2009, 21, 395502. [CrossRef] [PubMed] Disclaimer/Publisher's Note: The statements, opinions and data contained in all publications are solely those of the individual author(s) and contributor(s) ...
... X-ray powder diffraction software (Version 2.8.30; Rigaku Corporation, Tokyo, Japan). The morphology and composition/quality of the catalyst were analyzed on SEM (JEOL JSM-6460LV, with the operating, voltage of 20 keV) equipped with an EDS INCAx-sighi detector and an “INAx-stream” pulse processor ...Sanja J. Armaković, Aleksandra Jovanoski Kostić, Andrijana Bilić, Maria M. Savanović, Nataša Tomić, Aleksandar Kremenović, Maja Šćepanović, Mirjana Grujić-Brojčin, Jovana Ćirković, Stevan Armaković. "Photocatalytic Activity of the V2O5 Catalyst toward Selected Pharmaceuticals and Their Mixture: Influence of the Molecular Structure on the Efficiency of the Process" in Molecules, MDPI AG (2023). https://doi.org/10.3390/molecules28020655
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From post-disaster landslides inventory to open landslides data
Biljana Abolmasov, Miloš Marjanović, Uroš Đurić, Jelka Krušić. "From post-disaster landslides inventory to open landslides data" in Proceedings of 3rd European Regional Conference of IAEG/ Athens/ Greece/ 6-10 October 2021, International Association for Engineering Geology and the Environment (2021)
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Optimisation of underground mine decline development system using genetic algorithm
... mineral processing facility, surface breakout point and ore body access points. Brazil et al. created a software tool called Decline Optimization Toll (DOT). The heuristic methods used in DOT1 are replaced in the new version of the software tool, DOT2, by a method based on an understanding of ...
... x (1) In this formulation x is the n-dimensional vector of SBP and UMCP coordinates, while xL and xU are the n-dimensional vectors representing the lower and upper bounds of the coordinates, i.e. the design space. The optimisation goal is to minimize the objective ...
... the cost is a combination of both development and haulage costs, subject to design constraints (Brazil et al. 2003; 2008). In our model we defined spatial network by nonlinear constrained objective function representing the cost of mine development and ore haulage. To find the minimum value of ...Zoran Gligorić, Aleksandar Ganić, Rade Tokalić, Aleksandar Milutinović. "Optimisation of underground mine decline development system using genetic algorithm" in Underground mining engineering, Beograd : Univerzitet u Beogradu – Rudarsko–geološki fakultet (2014)
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Numerical modeling of Selanac debris flow propagation using SPH code
The Selanac debris flow is a very huge event triggered after extreme rainfall caused by Cyclone Tamara activity in the Republic of Serbia in May 2014. The Selanac case study was already modelling in different programs using Voellmy rheology assumptions like RAMMS software. In this paper research are focusing particularly on the process of debris flowing from initiation zone to main deposition area using Geoflow SPH two-phase model considering frictional rheology law. Main rheological parameters are back-calculated using also ...... Location of case study B) geometry and main parts 3 METHOD SPH (Smoothed Particle Hydrodynamics) was firstly proposed by Lucy (1977) and Gingold and Monaghan (1977) and applied in astrophysical modeling. In time, it became widely used in different fields (Liu and Liu 2010; Chen et al. 1996; Huang ...
... fields of research, and it is found very suitable in different parts of fluid mechanics. Its main difference from other most used methods like finite element and finite difference methods, is in absence of numerical grid, and while mass is presented with particles of solid and fluid phase. Each particle ...
... Cuomo, S., and Drempetic, V. (2009). ‘’A depth integrated, coupled SPH model for flow-like landslides and related phenomena’’. International Journal on Numerical Analysis and Methods in Geomechanics, 33(2): 143–172. doi:10.1002/nag.705. Cascini, L., Cuomo, S., Pastor, M., Sorbino, G., and Piciullo ...Jelka Krušić, Biljana Abolmasov, Miloš Marjanović, Manuel Pastor, Saeid M. Tayyebi . "Numerical modeling of Selanac debris flow propagation using SPH code" in SCG-XIII International Symposium on Landslides. Cartagena, Colombia- February 22-26, 2021, International Society for Soil Mechanics And Geotechnical Engineering (2021)
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Hydrogeochemistry of Uranium in the Groundwaters of Serbia
Marina Ćuk, Maja Todorović, Petar Papić, Jovan Kovačević, Zoran Nikić. "Hydrogeochemistry of Uranium in the Groundwaters of Serbia" in Uranium - Past and Future Challenges, Springer International Publishing Switzerland (2015). https://doi.org/10.1007/978-3-319-11059-2_89
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Extensive vibrations of the belt conveyer drive electromotor of a bucket wheel excavator as a result of intesified wear-and-tear of its mount support
Vesna Damnjanović, Predrag Jovančić, Snežana Aleksandrović. "Extensive vibrations of the belt conveyer drive electromotor of a bucket wheel excavator as a result of intesified wear-and-tear of its mount support" in Journal of Vibroengineering (2017). https://doi.org/10.21595/jve.2016.17321
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Modelling of environmental data using artificial neural networks
Elena Klarići (1995)Elena Klarići. Modelling of environmental data using artificial neural networks, London:Imperial college of science, 1995
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Polymorphism and photoluminescence properties of K3ErSi2O7
alkalni silikati elemenata retkih zemalja, silikati lantanoida, polimorfizam, fotoluminescencija, kristalna strukturaPredrag Dabić, Marko G. Nikolić, Sabina Kovač, Aleksandar Kremenović. "Polymorphism and photoluminescence properties of K3ErSi2O7" in Acta Crystallographica Section C Structural Chemistry, International Union of Crystallography (IUCr) (2019). https://doi.org/10.1107/S2053229619011926
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Mineralogical study of clays from Dobrodo, Serbia, for use in ceramics
Maja Milošević, Predrag Dabić, Sabina Kovač, Lazar Kaluđerović, Mihovil Logar. "Mineralogical study of clays from Dobrodo, Serbia, for use in ceramics" in Clay Minerals, Mineralogical Society (2019). https://doi.org/10.1180/clm.2019.49