Претрага
950 items
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Depth geological relations of the wider area of Belgrade - based on the wells and geophysical data
Đorđe Marinović, Ljupko Rundić (2020)Предметна референца обухвата простор шире околине Београда укупне површине око 2.000 km2. Аутори су објединили капиталне геолошке и геофизичке податке обезбеђене површинским истраживањима и мултидисциплинарним елементима из 52 бушотинe са дубинама између 33 и 2.733 m. Конкретни палеонтолошки налази специјализованих аналитичара са детерминацијом макро и микрофауне и флоре, презентовани су како из неогених формација тако и из басенске подине. Осим конвенционалних петролошких описа стена цитиране су и микроскопске детерминације интрузивних и екструзивних магматита. Из затвореног басенског простора корелативно су ...Đorđe Marinović, Ljupko Rundić. "Depth geological relations of the wider area of Belgrade - based on the wells and geophysical data" in Annales geologiques de la Peninsule balkanique, National Library of Serbia (2020). https://doi.org/10.2298/GABP201030009M
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The application of ArcGIS for assessing the potential of solar energy in urban area: The case of Vranje
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 ...... There are several models - available to be used by the public - for creating: the solar maps. These models are usually connected with computer software applications, with most of them using ESRIs ArcGIS as their base system (Sarmiento N. et al.. 2019). ESRI's ArcGIS can provide the appropriate ...
... entire sky above the observed location, divided into separate sectors with unique diffuse radiation values. The number of sectors depends on the required accuracy in the calculation (ESRI, 2019). Figure 5 shows a sky map with sky sectors defined by 8 zenith divisions and 16 azimuth divisions. Each ...
... quotient of the average daily solar radiation energy for the area with the highest value of solar radiation energy is calculated, and the resulted daily solar radiation energy is 3.76 kWh/m?. Figure 12 shows the histogram with the insolation values for the studied area. In addition to this histogram ...Boban Pavlović, Milica Pešić-Georgiadis. "The application of ArcGIS for assessing the potential of solar energy in urban area: The case of Vranje" in 12th International Conference on Energy and Climate Change, 9-11 October 2019, Athens - Greece, Energy Policy and Development Centre (KEPA) of the National and Kapodistrian University of Athens (2019)
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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 ...... point positions were determined by post- processing of kinematic GNSS observations with respect to all four stable (base) points, with each landslide point determined twice (two data collections, each with 30 epochs with a 1 second interval of observation). Comparisons and averaging were made between ...
... System), used in order to monitor the dynamics of landslide in real time, with observation rate of 30 seconds. The observed GNSS monitoring results, as well as the correlations between precipitation and Sava river level with landslide dynamics were presented in numerous publications [5-9]. Despite ...
... realized. Up to this time, three observation epochs were completed with the aim of three-dimensional positioning of characteristic landslide points. The data obtained using this methodology represent very reliable monitoring results with a high density of points from which it is possible to perform ...Mileva Samardžić Petrović, Jovan Popović, Uroš Đurić, Biljana Abolmasov, Marko Pejić, Miloš Marjanović. "Permanent GNSS monitoring of landslide Umka" in International Conference on Contemporary Theory and Practice in Construction XIV Stepgrad, University of Banja Luka, Faculty of Architecture, Civil Engineering and Geodesy (2020). https://doi.org/10.7251/STP2014091S
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New data on the age of an Upper Cretaceous clastic-carbonate succession in Brežđe (Western Serbia)
Nevenka Đerić, Nataša Gerzina (2014)... |)-w|} limestone with chert nodules -_ sandy limestone conglomerate and sandstone position of radiolarian samples Figure 4:A Generalized columnar section of the Cretaceousin the studied area.The inset to the right shows the column interval studied for radiolarians, with the sample locations ...
... starts with strongly sheared serpentinite in the footwall of slightly metamorphic Triassic platform carbonates. The footwall of thc serpenti- nite is not visible along the profile but, according to the ob- servations in the immediate surroundings, serpentinite is in a tectonic contact with the ...
... steep-dipping fault along which Triassic limestone is in contact with Late Đerić and Gerzina: New data on the age of an Upper Cretaceous clastic-carbonate succession in Brežđe (Western Serbia) Cretaceous maristone. The section terminates with shallow- marine carbonates. Four samples were taken for ...Nevenka Đerić, Nataša Gerzina. "New data on the age of an Upper Cretaceous clastic-carbonate succession in Brežđe (Western Serbia)" in Geologia Croatica (2014)
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Clockwise vertical-axis rotation in the West Vardar zone of Serbia: Tectonic implications
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 ...... area of Rudnik Mts. (see Fig. 2) with Late Cretaceous and Oligocene-Miocene sampling localities/sites and the area of Kopaonik Mts. (Fig. 3) with Oligocene sampling localities/sites. The inset shows the place of the Vardar zone in the Carpatho-Balkan region with sampling areas indicated (red boxes) ...
... using JR-5 and JR-5A magnetometers (AGICO, Brno). This was followed by anisotropy of magnetic susceptibility (AMS) measure- ments with KLY-2 or with MFK1-A kappabridges with Jelı́nek (1977) method. The computer programs used for measurements and evaluations were Aniso (Bodrás 1990) and ANISOFT 4.2 ...
... in increments with alternating field (AF) (AFD300, Magnon, Dassel and LDA-3A, AGICO) or with the thermal (MMTD80, Magnetic Measurements, Aughton, and TSD- 1, Schonstedt Instrument Company, Reston) method. The remaining samples from the respective groups were demagnetized with the more efficient ...Vesna Lesić, Emo Márton, Violeta Gajić, Dragana Jovanović, Vesna Cvetkov. "Clockwise vertical-axis rotation in the West Vardar zone of Serbia: Tectonic implications" in Swiss Journal of Geosciences, Basel : Springer International Publishing (2018). https://doi.org/10.1007/s00015-018-0321-8
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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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Some examples of interactions between certain rare earth elements and soil
... of the rare earth elements to soil the Freundlich adsorption isotherm has been used since it is suitable for working with heterogeneous surfaces, such as in soil and for working with medium and high concentrations.14 Sequential extraction (SE) was used for desorption of these elements from the soil ...
... through “blue band” filter paper (pores size < 2 μm) into the 100 mL volumetric flasks. The sediments were rinsed three times with 10 mL distilled water each and filled up with distilled water up to the line. The solutions prior to mixing and the solutions after the mixing were analyzed by ICP-OES. The ...
... was performed with bidistilled water as far as the negative reaction to oxalates. The filtrates obtained were transferred each to 250 mL volumetric flasks and filled up to the line. The sediments from the funnels were quantitatively transferred each to 250 mL glasses by rinsing with 40 mL of 0.02 ...Zlatko Nikolovski, Jelena Isailović, Dejan Jeremić, Sabina Kovač, Ilija Brčeski. "Some examples of interactions between certain rare earth elements and soil" in Journal of the Serbian Chemical Society, National Library of Serbia (2021). https://doi.org/10.2298/JSC211006095N
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An arid phase in the Internal Dinarides during the early to middle Miocene: Inferences from Mg-clays in the Pranjani Basin (Serbia)
N. Andrić-Tomašević, V. Simić, O. Mandic, D. Životić, M. Suárez, E. García-Romero. "An arid phase in the Internal Dinarides during the early to middle Miocene: Inferences from Mg-clays in the Pranjani Basin (Serbia)" in Palaeogeography, Palaeoclimatology, Palaeoecology, Elsevier BV (2020). https://doi.org/10.1016/j.palaeo.2020.110145
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Mineralogical Discrimination between Authentic and Recent Imitations of Pottery Manufacture in Zlakusa, Serbia
... the investigated pots were made from clay body prepared with raw clay mixed with crushed calcite in the ratio of 50:50 [2]. As previously reported [1], the raw clay consists mainly of smectite, kaolinite/halloysite and illite minerals with quartz, feldspars and smaller amounts of goethite present ...
... Belgrade, Trg Republike 1a, Belgrade, Serbia Email: maja.milosevic@rgf.bg.ac.rs The traditional coiling and hand-wheel manufacture of pottery with raw clay from the local source are characteristic for Zlakusa (western Serbia), which is on the UNESCO Representative List of the Intangible Cultural ...
... Neolithic, mid 7th millennium BC, in the area of current territory of Serbia. What makes it a unique phenomenon, in technological terms, is the fact that with the discovery of new techniques and production processes, the old ways, already adopted and mastered continued to live and actively coexist until ...Maja Milošević, Mihovil Logar, Biljana Đorđević. "Mineralogical Discrimination between Authentic and Recent Imitations of Pottery Manufacture in Zlakusa, Serbia" in Nordic Clay Meeting/3rd Symposium Clays & Ceramics 2021, The Latvian Clay Science Society (2021)
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Poreklo asocijacije Ni, Ag i Sn minerala u polimetaličnom ležištu Rudnik
Rudnomikroskopska, SEM-EDS i LA-ICP-MS ispitivanja rudne mineralizacije iz Pb-Zn-Cu-(Ag) ležišta Rudnik, ukazala su na lokalno prisustvo specifične asocijacije minerala nikla, srebra i kalaja, deponovane u tektonskoj breči, arsenopiritsko-pirotinskim, piritsko-pirotinsko-arsenopiritskim i kvarcno-sulfidnim žicama u harcburgitima. U tektonskoj breči deponovan je polimineralni sulfidni agregat kojeg čine pirotin (50), galenit, sfalerit i halkopirit. Arsenopiritsko-pirotinske žice odlikuje dezintegrisani agregat arsenopirita cementovan sa pirotinom. U piritsko-pirotinsko-arsenopiritskim žicama masivni pirit (50%) prorasta sa arsenopiritom i cementovan je polimineralnim agregatom pirotina, galenita i sfalerita. Minerali nikla, srebra ...Stefan Petrović, Aleksandar Pačevski, Viktor Bertrandson Erlandson, Rade Jelenković. "Poreklo asocijacije Ni, Ag i Sn minerala u polimetaličnom ležištu Rudnik" in 18. Kongres geologa Srbije "Geologija rešava probleme", Divčibare, 01-04 jun 2022., Srpsko geološko društvo (2022)
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Tektonska evolucija severoistočnih Dinarida
... to E ductile shear zone with quartz sigma clasts is observed on the eastern slopes of the Bukulja Mts. In contrast to the ductile structures, the late-phase brittle deformation is associated with the reactivation and formation of normal and dextral strike-slip faults with variable orientation and ...
... deformation phase is associated with N-S contraction during the Late Paleozoic Variscan orogeny. The ductile structures that accommodate this pre-Alpine deformation are represented by S1 foliation, folded into rare mm to dm-scale isoclinal and asymmetric folds with significant variability in fold-axis ...
... Internal Dinarides, Pannonian Basin extension, structural analysis The north-eastern margin of the Internal Dinarides, located near their junction with the Carpatho-Balkanides, has recorded several pre-Alpine and Alpine tectonic events. Therefore, this is one of the key regions to study the def ...Nikola Ranđelović, Branislav Trivić, Nemanja Krstekanić, Bojan Kostić, Uroš Stojadinović. "Tektonska evolucija severoistočnih Dinarida" in 18. Kongres geologa Srbije "Geologija rešava probleme", Divčibare, 01-04 jun 2022., Srpsko geološko društvo (2022)
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A multi-criteria approach for assessing the potential of renewable energy sources for electricity generation: Case Serbia
When assessing the potential of renewable energy alternatives for electricity generation, it is necessary to implement a multi-perspective approach that includes economic, technical, environmental, and socio-political criteria. For the evaluation of criteria and alternatives, the Fuzzy Analytical Hierarchy Process (FAHP) method is applied. The obtained weights are formed according to the values of energy indicators and expert judgments. The use of a fuzzy numerical value scale for the assessment of expert judgments and energy indicators provides a more sensitive ...... hydropower plants). EPS comprises 15 hydro power plants with 49 units, 1 pumped-storage hydro power plant with 2 units, 1 pumping plant with 2 pumps and 16 small hydro power plants. Branch ‘‘Hydro Power Plant Djerdap’’ comprises 7 hydro power plants with 28 units, having installed capacity of 1592 MW and ...
... trading. Electricity generation in Serbia relies on lignite for around 70% of its electricity production. (EPS, 2018). EPS operates with 6 thermal power plants with 18 units, with a total capacity of 4054 MW (EPS, 2018). The resource for electricity generation in the EPS’ thermal power plants is lignite, as ...
... proficient than crisp numbers for deal- ing with the ambiguity, information shortage, and uncertainty inherent in decisions made by human beings (Rani et al., 2020). For decomposing the complex objective of the study into a hierarchical structure and for dealing with uncertainty in a decision-making process ...Boban Pavlović, Dejan Ivezić, Marija Živković. "A multi-criteria approach for assessing the potential of renewable energy sources for electricity generation: Case Serbia" in Energy Reports, Elsevier BV (2021). https://doi.org/10.1016/j.egyr.2021.02.072
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Extraction of Bilingual Terminology Using Graphs, Dictionaries and GIZA++
Branislava Šandrih, Ranka Stanković (2020)U nauci, industriji i mnogim istraživačkim oblastima, terminologija se brzo razvija. Najčešće, jezik koji je „lingua franca“ za većinu ovih oblasti je engleski. Kao posledica toga, za mnoga polja termini domena su koncipirani na engleskom, a kasnije se prevode na druge jezike. U ovom radu predstavljamo pristup za automatsko izdvajanje dvojezične terminologije za englesko-srpski jezički par koji se oslanja na usaglašeni dvojezični korpus domena, ekstraktor terminologije za ciljni jezik i alat za usklađivanje delova. Ispitujemo performanse metode na domenu ...... input sentences were enhanced with ad- ditional bilingual pairs, and when extraction of Serbian terms was performed on the Serbian part of the aligned corpus, instead of aligned chunks. We will continue to experiment with these settings. Moreover, we intend to enrich bi-list with newly produced pairs. Our ...
... structures: – N_Prep_Np, noun (1st component that inflects) followed by prepo- sitional phrase (3rd component agrees in case with a preposition), as in examples: lista sa podacima (list with data), mašina za pranje (washing machine), ugovor o radu (work contract); – N_Ngi_Ngi NxAg(i)xNg(i), 1st component inflects; ...
... augmented with bilingual pairs from the bi-list. For the extraction of English terms (Input ii) we used the English side of the dictionary LIS- dict in one series of experiments, and term extractor Eng-TE in the other, while the extraction of Serbian terms (Input iii) was done by Serb-TE. With the notation ...Branislava Šandrih, Ranka Stanković. "Extraction of Bilingual Terminology Using Graphs, Dictionaries and GIZA++" in Infotheca, Faculty of Philology, University of Belgrade (2020). https://doi.org/10.18485/infotheca.2019.19.2.6
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Tectonic evolution of the Vršac Mts. (NE Serbia): Inferences from field kinematic and microstructural investigations
The Vršac Mts. in NE Serbia represent the key area to investigate structural relations between the Northern Serbo-Macedonian Subunit and Supragetic Unit of the Dacia Mega-Unit. The geodynamic events during the Variscan orogeny in the Late Paleozoic colligated the two units and led to their metamorphic differentiation. The Late Cretaceous extension exhumed the medium-grade Serbo-Macedonian metamorphic rocks and structurally juxtaposed them against the low-grade metamorphosed basement of the Supragetic Unit along an E-dipping shear zone, which outcrops in the ...severna srpsko-makedonska subjedinica, supragetikum, kinematska analiza, multifazna ekstenzionalna deformacija... in contact with low-grade green- schist facies metamorphic rocks of the Supragetic Unit (Figs. 2 and 3, Kräutner & Krstić 2003; Matenco & Radivojević 2012). The western part of the mountains is predominantly made up by the Serbo-Macedonian biotite–muscovite gneisses and micaschists with intercalations ...
... a statistical analysis of poles to foliation shows foliation dip direction/dip maximum of SSMM 058/32° with a significant variability in Fig. 3. Simplified structural map of the Vršac Mts. with stereonet density plots of foliation poles and stretching lineation and stereonet projec- tions of dextral ...
... and north-eastward-dipping in the west to more eastward-dipping closer to the contact with the Supragetic Unit. Stretching lineation in the Northern Serbo-Macedonian Subunit is more uniform (SMM-L in Fig. 3), with trend/plunge maximum of LSMM 025/23° and a local dissipation towards the north. At ...Uroš Stojadinović, Nemanja Krstekanić, Bojan Kostić, Marija Ružić, Aleksa Luković . "Tectonic evolution of the Vršac Mts. (NE Serbia): Inferences from field kinematic and microstructural investigations" in Geologica Carpathica, Central Library of the Slovak Academy of Sciences (2021). https://doi.org/https://doi.org/10.31577/GeolCarp.72.5.3
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Hypogene karst associated with igneous intrusions and its influence on the subsequent karst evolution in high mountains (Central Andes, Peru)
Carbonate rocks of Cretaceous age are wide spread in the Peruvian Andes. The studied area in the eastern part of the Cordillera Occidental, near a large igneous intrusion and a skarn deposit, exemplifies polygenetic and multi-phase karst development. Hypogene karstification is related to a hydrothermal activity associated with a magmatic event at ca. 11-9.7 Ma responsible for the emplacement of the nearby intrusion and related alteration of the carbonate rocks. It has resulted in deep-rooted, laterally isolated stair-case-rising shaft ...Alexander B. Klimchouk, Saša Milanović, Cristian Bittencourt. "Hypogene karst associated with igneous intrusions and its influence on the subsequent karst evolution in high mountains (Central Andes, Peru)" in Conference: 21st International Congress of Speleology, France, June 2021, France : ICS (2021)
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Sentiment Analysis of Serbian Old Novels
In this paper we present first study of Sentiment Analysis (SA) of Serbian novels from the 1840-1920 period. The preparation of sentiment lexicon was based on three existing lexicons: NRC, AFFIN and Bing with additional extensive corrections. The first phase of dataset refinement included filtering the word that are not found in Serbian morphological dictionary and in second automatic POS tagging and lemma were manually corrected. The polarity lexicon was extracted and transformed into ontolex-lemon and published as initial ...Ranka Stanković, Miloš Košprdić, Milica Ikonić Nešić, Tijana Radović. "Sentiment Analysis of Serbian Old Novels" in Proceedings of the 2nd Workshop on Sentiment Analysis and Linguistic Linked Data, June 2022, Marseille, France, European Language Resources Association (2022)
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Specific electrical conductivity in epikarst groundwater of the eastern Suva Planina mt.
Branislav Petrović (2022)The epikarst is a part of the karst outcrop that is located within the unsaturated zone and represents a complex point of contact and mixing of unconsolidated material from the terrain surface. The correct and complete perception of epikarst, its degree of development and the presence on the limestone terrain can be achieved with a multidisciplinary approach. The study area for the applied multidisciplinary research was the Eastern part of karst massif Suva Planina Mt. One important part of ...Branislav Petrović. "Specific electrical conductivity in epikarst groundwater of the eastern Suva Planina mt." in KARST 2022: "Importance, State of the Art, and Prospective of Utilization and Protection of Resources in Karst", Serbian Academy of Sciences and Arts (SASA) (2022)
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Structural and microstructural study of brookite based TiO2 nanocomposites with carbon black (C)
Structural and microstructural properties of TiO2-based nanocomposites with carbon black (C), synthesized by sol-gel-hydrothermal method, have been studied by XRPD and Raman scattering. Detailed size-strain analyses of XRPD and Raman scattering results are presented in order to investigate the influence of C content on brokite and anatase phase formation. The XRPD size-strain analyses have resulted in reliable structure and microstructure results for both anatase and brookite and their relative abundance ratio has been refined by Rietveld method. The brookite ...Aleksandar Kremenović, Mirjana Grujić-Brojčin, Nataša Tomić, Maja Šćepanović. "Structural and microstructural study of brookite based TiO2 nanocomposites with carbon black (C)" in The European Powder Diffraction Conference (EPDIC) Book of Abstracts, Šibenik, 31 May - 3 June 2022, EPDIC (2022)
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Correlation of uniaxial compressive strength with the dynamic elastic modulus, p –wave velocity and s –wave velocity of different rock types
Knowing mechanical properties of rocks incorporated with ultrasonic waves velocities investigations provide a secure basis for mine modelling. Uniaxial compressive strength, dynamic elastic modulus and ultrasonic waves velocities are just some of the rock properties that indicate on presence of discontinuities, stratification and fissures of rocks. Determining the relationship of these rock properties testing the rock samples that are corresponding to different rock types extracted from different mineral deposits represents the core of this study. In this paper, we ...Jelena Majstorović, Miloš Gligorić, Suzana Lutovac, Milanka Negovanović, Luka Crnogorac. "Correlation of uniaxial compressive strength with the dynamic elastic modulus, p –wave velocity and s –wave velocity of different rock types" in Underground mining engineering, Рударско - геолошки факултет - Београд (2019)
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Synchronization of IZH bursting neurons with diferent type of delayed coupling
Grozdanović Ines, Burić Nikola (2009)Grozdanović Ines, Burić Nikola. "Synchronization of IZH bursting neurons with diferent type of delayed coupling" in II International Congress of Serbian Society of Mechanics Palić, Subotica: (2009)