Претрага
265 items
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Korelacija magnetnog susceptibiliteta i sadržaja metala u flotacijskom jalovištu
Procena metala u rudama, jalovištu i zemljištu se tradicionalno određuje hemijskim metodama kao što su Rengen fluorescentna analiza (XRF), Instrumentalna neutronska aktivaciona analiza (INAA) i Masena spektrometrija induktivno spregnute plazme (ICP-MS). Neke od pomenutih metoda su veoma zahtevne i skupe, te se nametnula potreba ka traženju jeftinijeg alata za brzu procenu prisustva pojedinih metala. Tokom poslednjih nekoliko decenija, mnoge studije su pokazale da su magnetna merenja dovoljno osetljiva da detektuju magnetni signal feromagnetnih materijala, a samim tim i metala ...Filip Abramović, Vesna Cvetkov, Aco Ilić, Dragana Životić. "Korelacija magnetnog susceptibiliteta i sadržaja metala u flotacijskom jalovištu" in 18. Kongres geologa Srbije "Geologija rešava probleme", Divčibare, 01-04 jun 2022., Srpsko geološko društvo (2022)
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Properties of fly ash and slag from the power plants
This paper describes the physical, chemical and mineral properties of ash and slag, which were taken from thermal power plants Nikola Tesla A, Nikola Tesla B, Kostolac A and Kostolac B. The knowledge of the mineralogical material composition is important because the type of minerals directly determines the properties of the fly ash and slag and their possible application. Laboratory tests showed that ash and slag samples consist of the following minerals: amorphous materials, quartz, feldspar, mullite, melilite, cristobalite, ...fly ash, slag, physical composition, chemical composition, mineral composition, X-ray diffraction method... certain correlation co- efficients were determined and compared between the ash and slag. Dependence for all the samples was done using polynomial functions, because only this function gave the best correlation results. Results of the correlation coefficient, as a relationship and a correlation sign ...
... 60, where there is a higher amount of correlation coefficients. The histogram of slag results shows a small representation of the correlation coef- ficients untill 0.60, then small jumps appear with approximate values, while a large dispersion of correlation coefficients is ob- served from 0.9 to ...
... cristobalite; He – hematite; CaO – calcite; NT – Nikola Tesla; KO – Kostolac Table 4. Correlation between physical, chemical and mineral composition of �y ash and slag used from the power plants. Symbol Signi�cant correlation coe�cient values with: �y ash slag chemical composition LOI SiO2(0.24) Al2O3(0 ...Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić. "Properties of fly ash and slag from the power plants" in Geologia Croatica, Zagreb : Croatian Geological Survey (2016). https://doi.org/10.4154/gc.2016.26
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Results of Recent Monitoring Activities on Landslide Umka, Belgrade, Serbia—IPL 181
Biljana Abolmasov, Uroš Đurić, Jovan Popović, Marko Pejić, Mileva Samardžić Petrović, Nenad Brodić (2021)... 2010–2014. PSInSAR data analysis also showed good correlation between nearest PS points and GNSS point for the same period of monitoring. Results from UAV and geodetic benchmarks survey showed very good correlation in displacement vectors’ direction. According to the analyzed data it could be concluded ...
... enable the analysis, correlation and synthesis of data obtained from various phases of investigation conducted on the Umka landslide after a few decades of research. Results received from geotechnical monitoring conducted during certain phases of research are compared with data from automated GNSS ...
... monitoring data were analysed according to the measur- ments period and accuracy of monitoring techniques. Data of climatological parameters and Sava River level are colected on daily basis from Hydrometerological Servise of Serbia from the begining of the monitoring project (2010), but correlation with ...Biljana Abolmasov, Uroš Đurić, Jovan Popović, Marko Pejić, Mileva Samardžić Petrović, Nenad Brodić. "Results of Recent Monitoring Activities on Landslide Umka, Belgrade, Serbia—IPL 181" in Understanding and Reducing Landslide Disaster Risk. WLF 2020. ICL Contribution to Landslide Disaster Risk Reduction, Springer, Cham (2021). https://doi.org/10.1007/978-3-030-60196-6_14
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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... % of the ash). The linear dependence was made for all variants, and after that the correlation coefficient was calculated. The correlation coefficient is characterized and classified in the specific correlation group. After 7 days in the wet chamber, the maximum uniaxial strength and the modulus ...
... 8). The correlation coefficient with the cement content and the control sample is calculated and is 0,990, and with the lime content and the control sample is 0,899. After the calculated coefficient values it can be seen that the samples with the cement belong to the very strong correlation group ...
... After the calculated coefficient values it is obtained that the samples with the lime belong to the very strong correlation group, and with the cement belong to the very low correlation group, and the coefficients differ by 50 %. Figure 10 The dependence of the modulus of elasticity and the ...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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Results of comprehensive monitoring activities on Umka landslide, Belgrade, Serbia
Biljana Abolmasov, Uroš Đurić (2021)... survey data analysis showed also very good correlation in vectors azimuth (for the period 2018-2019) (Figure 1). PROCEEDINGS OF 3RD EUROPEAN REGIONAL CONFERENCE OF IAEG/ ATHENS/ GREECE/ 6-10 OCTOBER 2021 - 244 - Figure 1. A) GNSS monitoring data (2014-2018); B) PSInSAR monitoring data (2016-2019); ...
... from automated Global Navigation Satellite System (GNSS) monitoring network data, PSInSAR data analysis from Sentinel1 radar satellite images, conventional geodetic monitoring network data and UAV imaging, processing and data analysis in the last six years. Study area The Umka landslide is formed ...
... acceleration, which are mostly in correlation with the Sava river level rise/drawdown, respectively, whereas landslide velocity is characterized as slow to very slow (Abolmasov et al. 2015). Methods In the past decades many authors integrated monitoring data from different sources to reduce u ...Biljana Abolmasov, Uroš Đurić . "Results of comprehensive monitoring activities on Umka landslide, Belgrade, Serbia" in 3rd European Regional Conference of IAEG/ Athens/ Greece/ 6-10 October 2021, IAEG National Group Greece (2021)
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OntoLex Publication Made Easy: A Dataset of Verbal Aspectual Pairs for Bosnian, Croatian and Serbian
Ovaj rad predstavlja novi jezički resurs za pretraživanje i istraživanje verbalnih aspektnih parova u BCS (bosanskom, hrvatskom i srpskom), kreiran korišćenjem principa Lingvističkih Povezanih Otvorenih Podataka (LLOD). Pošto ne postoji resurs koji bi pomogao učenicima bosanskog, hrvatskog i srpskog kao stranih jezika da prepoznaju aspekt glagola ili njegove parove, kreirali smo novi resurs koji će korisnicima pružiti informacije o aspektu, kao i link ka aspektnim parovima glagola. Ovaj resurs takođe sadrži spoljne linkove ka monolingvalnim rečnicima, Wordnetu i BabelNetu. ...Ranka Stanković, Maxim Ionov, Medina Bajtarević, Lorena Ninčević. "OntoLex Publication Made Easy: A Dataset of Verbal Aspectual Pairs for Bosnian, Croatian and Serbian" in Proceedings of the 9th Workshop on Linked Data in Linguistics @ LREC-COLING 2024, Turin, 20-25 May 2024, ELRA and ICCL (2024)
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Some models for determination of parameters of the soil oscillation law during blasting operations
... < ρ < 0.2—none or highly poor correlation; ‚ 0.2 < ρ < 0.4—poor correlation; ‚ 0.4 < ρ < 0.7—significant correlation; and ‚ 0.7 < ρ < 1.0—strong or highly strong correlation. As a convenience measure of the obtained functional relationship for the given experimental data, the criterion “3S” was also ...
... experimental data and the calculated ones for oscillation velocities of v. If those differences are one after another ε1, ε2, ... εN, then it is: S “ d ε2 1 ` ε2 2 ` . . . ` ε2 N N (27) According to this criterion, for the evaluation of convenience of the obtained functional correlation, the following ...
... of 15 Based on the data in Table 2, a statistical analysis was carried out and the following values were obtained: ‚ For model 1: The curved line dependency index ρ1 between the reduced distance R and soil oscillation velocity v is: ρ1 = 0.9880 (there is a strong correlation between R and v, given ...Suzana Lutovac, Dragan Medenica, Branko Gluščević, Rade Tokalić, Čedomir Beljić. "Some models for determination of parameters of the soil oscillation law during blasting operations" in Energies, Basel, Switzerland : MDPI (2018). https://doi.org/10.3390/en9080617
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Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling
Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeBranislav Petrović, Veljko Marinović, Zoran Stevanović. "Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling" in Environmental Earth Sciences, Springer Science and Business Media LLC (2023). https://doi.org/10.1007/s12665-023-10911-5
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Quantitative analysis of syllable properties in Croatian, Serbian, Russian, and Ukrainian
Biljana Rujević, Marija Kaplar, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Jan Mačutek (2021)Biljana Rujević, Marija Kaplar, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Jan Mačutek. "Quantitative analysis of syllable properties in Croatian, Serbian, Russian, and Ukrainian" in Language and Text: Data, models, information and applications, John Benjamins Publishing Company (2021). https://doi.org/10.1075/cilt.356.04ruj
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Contents of potentially toxic elements in residual soils of a long-term mining region: a key study from Central and Western Serbia
Milun Jovanović, Dejan Prelević, Vidojko Jović, Danica Srećković-Batoćanin, Snežana Branković (2022)Regional geochemical research of residual soil was conducted in an area of about 20,000 km2 in the region of Central and Western Serbia, where six metallogenetic zones and mining since ancient times have been documented. The geochemical background variation in the residual soil was established upon the contents, spatial pattern and natural background of potentially toxic elements (PTEs). The limits of natural background values (mg·kg-1) were determined by the integral method. Our data show that anomalous concentrations of As, ...Milun Jovanović, Dejan Prelević, Vidojko Jović, Danica Srećković-Batoćanin, Snežana Branković. "Contents of potentially toxic elements in residual soils of a long-term mining region: a key study from Central and Western Serbia" in Periodico di Mineralogia (2022). https://doi.org/10.13133/2239-1002/17042
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Models of Determining the Parameters of Rock Mass Oscillation Equation with Experimental and Mass Blastings
... 2—none or highly poor correlation, 0.2 < ρ < 0.4—poor correlation, 0.4 < ρ < 0.7—significant correlation, 0.7 < ρ < 1.0—strong or highly strong correlation. In order to make sure that the conclusions we reach based on the sample concerning the characteristics of the basic data set are credible, the ...
... 0539 Based on the data in Table 3, a statistical analysis was carried out and the following values were obtained: • for model 1: The curved line dependency index ρ1 between the reduced distance R and rock mass oscillation velocity v is: ρ1 = 0.9730 (there is a strong correlation between R and v, given ...
... 0539 Based on the data in Table 3, a statistical analysis was carried were obtained: e for model 1: out and the following values The curved line dependency index p; between the reduced distance R and rock mass oscillation velocity v is: 01 = 0.9730 (there is a strong correlation between R and v, ...Suzana Lutovac, Branko Gluščević, Rade Tokalić, Jelena Majstorović, Čedomir Beljić. "Models of Determining the Parameters of Rock Mass Oscillation Equation with Experimental and Mass Blastings" in Minerals, Basel : MDPI AG, Basel, Switzerland (2018). https://doi.org/10.3390/min8020070
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Correlability of Solar Wind with Seismic Events in the Balkan Peninsula Zone
The Solar Heliospheric Observatory (SOHO) satellite was launched on the 2nd of December 1995 at L1 Lagrange point (1.5×106 km from Earth) with the purpose of gathering data for helioseismology, remote sensing of the solar atmosphere, and solar wind in situ. The satellite was positioned into orbit in early 1996, with data acquisition expected to commence on January 20th. The correlation between increased values of solar wind parameters and earthquakes in the Balkan peninsula zone between 1996 and 2018 ...Filip Arnaut, Dejan Vučković, Ivana Vasiljević, Vesna Cvetkov. "Correlability of Solar Wind with Seismic Events in the Balkan Peninsula Zone" in Geološki anali Balkanskog poluostrva, Beograd : Univerzitet u Beogradu - Rudarsko geološki fakultet (2021). https://doi.org/10.2298/GABP211029008A
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Soil oscillation law parameter determination with the application of Lagrange’s theorem at “Kovilovača“ open pit
... operations were performed. 3 DEFINING THE STATISTICAL CRITERIA To evaluate the degree of correlation between recorded (measured) and calcu- lated data in this paper, the coefficient of linear correlation r [5] was used between the logarithm of reduced distance R and the logarithm of the oscillation ...
... Bor 61 Based on the data in Table 3, a statistical analysis was carried out and the following values were obtained: Model 1: The curveline dependency index ρ1 be- tween the reduced distance R and soil oscil- lation velocity is: ρ1 = 0,9843 (there is a strong correlation between R an v, given ...
... po modelu 2 U zakonu brzine oscilovanja stenske mase datog po jednačini (4) u obliku: n RKv (4) parametar n možemo odrediti uzastopnim aproksimacijama uz primenu Lagranžove teoreme 8 . Ako zakon brzine oscilovanja stenske mase dat jednačinom (4) diferenciramo po R dobićemo: 1n RKnv ...Suzana Lutovac, Nebojša Vidanović, Čedomir Beljić, Zoran Gligorić. "Soil oscillation law parameter determination with the application of Lagrange’s theorem at “Kovilovača“ open pit" in Mining and Metallurgy Engineering Bor, Bor : Mining and Metallurgy Institute Bor (2015). https://doi.org/10.5937/MMEB1503053L
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SrpELTeC: A Serbian Literary Corpus for Distant Reading
U članku je predstavljen SrpELTeC, korpus razvijen u okviru akcije COST Distant Reading for European Literary History (CA16204). Svi romani u SrpELTeC-u su odabrani, pripremljeni i obeleženi korišćenjem zajedničkih principa uspostavljenih za sve jezičke zbirke u Evropskoj zbirci književnog teksta (ELTeC). Navedeni su izazovi i rešenja u pripremi SrpELTeC od nule. Svi romani su ručno kodirani u TEI sa bogatim metapodacima i strukturnim napomenama. Automatska anotacija je uključivala POS-označavanje, lematizaciju i imenovane entitete, oslanjajući se na resurse za obradu ...digital humanities, Serbian literature, text corpora, distant reading , linked data, named entity recognition, text analyticsRanka Stanković, Cvetana Krstev, Duško Vitas. "SrpELTeC: A Serbian Literary Corpus for Distant Reading" in Primerjalna književnost, Research Centre of the Slovenian Academy of Sciences and Arts (2024). https://doi.org/10.3986/pkn.v47.i2.03
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Distribution of major and trace elements in the Kovin lignite (Serbia)
Dragana Životić, Olga Cvetković, Predrag Vulić, Ivan Gržetić, Vladimir Simić, Konstantin Ilijević, Biljana Dojčinović, Suzana Erić, Bogdan Radić, Sanja Stojadinović, Snežana Trifunović (2019)geochemical and mineralogical study was performed on lignite samples from the Upper Miocene Kovin deposit, hosting three coal seams. The Kovin lignite is characterized by high moisture content, medium to high ash yield, medium to high sulphur content and a relatively low gross and net calorific value. The mineralogical composition, and major and trace element contents were determined by X-ray diffraction, scanning electron microscopy with energy dispersive Xray spectroscopy (SEM-EDS) analyses, and inductively coupled plasma optical emission spectrometry (ICP-OES). ...... connection with pyrite. The result of SEMEDS exa mination confirms the correlation data (Fig. 4k, l, m). The mi neralrich lignite in the bottom part of seam I of field B is particularly enriched in As (Fig. 4). A very strong correlation between Fe, As and Cd and all of them with Sdb in seam I, clearly ...
... (Serbia) 63 correlation coefficients varying from 0.35 to 0.49 between ash yield and the aforementioned elements. Sr in seam I; Sdb and Ca in seam II, and Ca, As and Sr in seam III show organic affinity (rash= –0.35 – –1.00; Table 8). According to the geochemical and SEMEDS data most trace elements ...
... Ni, Pb and Se respectively. A very strong correlation As–Sdb (Table 6) indicates a pyritic form of As in coal seam I. Cadmium is predominantly associated with Zn mostly in sphalerite (ZnS; GOODARZI, 2002), as well as in other sulphides (e.g. pyrite; DALE et al., 1999). However, an ”organic” form of ...Dragana Životić, Olga Cvetković, Predrag Vulić, Ivan Gržetić, Vladimir Simić, Konstantin Ilijević, Biljana Dojčinović, Suzana Erić, Bogdan Radić, Sanja Stojadinović, Snežana Trifunović. "Distribution of major and trace elements in the Kovin lignite (Serbia)" in Geologia Croatica, Croatian Geological Survey (2019). https://doi.org/10.4154/gc.2019.06
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Control of substructure construction of railways in the Republic of Serbia
Контрола збијености природног тла (у ископу) или збијеног у насипу при изградњи саобраћајница представља један од основних облика контроле квалитета доњег строја. Код изградње брзих саобраћајница (аутопутеви и брза железница) приоритет је постизање високог нивоа контроле извршених радова. У циљу онемогућавања диференцијалног слегања (при изградњи насипа), или промене запремине услед допунског збијања материјала, које неминовно доводе до деформација, потребно је извршити оптимално збијање материјала. У оквиру овог рада приказује се техничка регулатива која регулише контролу збијености при изградњи железничке ...... this test method is used as faster one in the world, but it is carried out with other tests: determination of Dpr, water content, correlation relations Ev2/Ev1, correlation between Ev2 and Evd, determination of degree of unevenness, coefficient of water resistance (for protective layer) . In the Republic ...
... be applied only in correlation with standardized methods. According to the provisions of the mentioned Instruction and the Regulations of testing, determination of the dynamic modulus of deformation, Evd is obligatorily performed along with other tests and the stated correlation relations. Due to the ...
... required values of the dynamic modulus of deformation Evd together with the required values of the modulus of deformation Ev2. Determining the correlation coefficient between the deformation modulus Ev2 and Evd can be applied in special cases when soil 602 STEPGRAD2022 PROCEEDINGS OF INTERNATIONAL ...Dragan Lukić, Dragoslav Rakić, Irena Basarić Ikodinović. "Control of substructure construction of railways in the Republic of Serbia" in International Conference On Contemporary Theory and Practice in Construction XV, Banja Luka 16-17 jun 2022., University of Banja Luka Faculty of Architecture, Civil Engineering and Geodesy (2022)
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Football terminology: compilation and transformation into OntoLex-Lemon resource
У овом раду представља се пројекат који је у развоју, креирање првог дигиталног фудбалског речника на српском језику, као и да демонстрација примене модела OntoLex и љегових модула. OntoLex-FrAC модул укључује информације о учесталости и примерима употребе екстрахованих из корпуса. У овом случају, креиран је корпус за специфичан домен под називом СрФудКо, који садржи чланке вести о фудбалу на српском језику. Вишечлани термини аутоматски су екстраховани из српског корпуса, а затим ручно евалуирани и класификовани као спортски или ...Jelena Lazarević, Ranka Stanković, Mihailo Škorić, Biljana Rujević. "Football terminology: compilation and transformation into OntoLex-Lemon resource" in LDK 2023 – 4th Conference on Language, Data and Knowledge, 12-15 September in Vienna, Austria, Lisabon : NOVA FCSH - CLUNL (2023). https://doi.org/10.34619/srmk-injj
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Frequency and Length of Syllables in Serbian
Marija Radojičić, Biljana Lazić, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Ján Mačutek, Lívia Leššová (2019)Basic analyses of several properties of syllables (the rank-frequency distribution, the distribution of length, and the relation between length and frequency) in Serbian is presented. The syllabification algorithm used combines the maximum onset principle and the sonority hierarchy. Results indicate that syllables behave similarly to words as far as mathematical models are concerned, but values of parameters in models for syllables are quite different from those for words.... which the Spearman correlation attains value −0.267 if word length is measured in syllables, and −0.299 if word length is measured in letters20 (statistically significant also in both of these cases). The tendency to favour shorter syllables is obvious also from Table 4. Data from Table 2 were pooled ...
... languages. The correlation is −0.269 for Croatian, a language which is close to Serbian. No other language in their study achieves a stronger correlation. This fact tempts us to formulate a conjecture (which, of course, must be corroborated on many other languages) that the correlation between frequency ...
... syllables are shorter.18 Indeed, the value of the Spearman correlation coefficient between syllable frequency and length in the text under analysis is −0.397. It is quite clearly statistically significant, with p-value < 0.001. The negative correlation between frequency and length of syllables seems to be ...Marija Radojičić, Biljana Lazić, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Ján Mačutek, Lívia Leššová. "Frequency and Length of Syllables in Serbian" in Glottometrics (2019)
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Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)
Saša Ivanišević, Dejan Radivojević (2018)Exploration for oil and gas in mature areas, such as the Pannonian Basin, can benefit from reexamination of old data using more advanced modern workflows that focus on the temporal and spatial aspects of sediment deposition. Specifically, we apply a new environment of deposition model that interprets the Upper Miocene- Pliocene sediments as being deposited in a rapidly filling basin characterized by quick shelf edge progradation from the northwest toward the southeast. Reconstruction of this shelf edge trajectory reveals ...Saša Ivanišević, Dejan Radivojević. "Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)" in Interpretation, AAPG SEG (2018). https://doi.org/10.1190/INT-2017-0084.1
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Hydrochemical changes and groundwater grouping data by multivariate statistical methods within one karst system: recharge–discharge zone (Eastern Serbia case study)
Ljiljana Vasić, Dragana Živojinović, Vladana Rajaković-Ognjanović. "Hydrochemical changes and groundwater grouping data by multivariate statistical methods within one karst system: recharge–discharge zone (Eastern Serbia case study)" in Carbonates and Evaporites, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s13146-019-00548-6