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890 items
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Crystallographic, spectroscopic, thermal and computational studies of polymeric cobalt(II)–mellitate complex with 2,2′-bipyridine
Orange single crystals of new polymeric cobalt(II) complex {[Co(bipy)(H2O)4]2[Co(μ-mell)(H2O)2]·10H2O}n, 1, were synthesized by slow evaporation method at room temperature (bipy = 2,2′-bipyridine, mell = hexaanion of mellitic acid) and its crystal structure was determined by single-crystal X-ray diffraction. The complex 1 was characterized based on elemental analysis, FTIR spectroscopy and thermal (TG/DTA) analysis followed by computational analysis of noncovalent interactions and quantum chemical calculations of interaction energies. In 1, two crystallographically different Co(II) atoms adopt a deformed octahedral geometry, ...Lidija Radovanović, Dušan P. Malenov, Marko V. Rodić, Aleksandar Kremenović, Jelena Rogan. "Crystallographic, spectroscopic, thermal and computational studies of polymeric cobalt(II)–mellitate complex with 2,2′-bipyridine" in Journal of Molecular Structure, Elsevier BV (2021). https://doi.org/10.1016/j.molstruc.2021.132202
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Kontaktni metamorfizam gornjokrednih sedimentnih stena Rudnika
Kostić N. Bojan (2021)Kontaktni metamorfizam gornjokrednih sedimentnih stena na planini Rudnik ispitivan je na uzorcima iz pet bušotina. Definisano je šest varijeteta krednih stena (protolita) koji čine dve litološke jedinice izgrađene od klastičnog, karbonatnog i klastično-karbonatnog materijala. Vulkanskom aktivnosti na Rudniku formirana su vulkanska tela koja se utiskuju duž slojevitosti sedimentnih stena, a neka ih presecaju u vidu dajkova. Starost ovog vulkanskog događaja određena je na 23.9 miliona godina. Ovaj miocenski vulkanizam doveo je do kontaktno metamorfnih promena sedimentnih stena i obrazovanja skarnova ...... Mineralogist, Vol. 34, p.1195-1209 Terzić, M., Ristić, P. 1963: Vulkanske stene severozapadnog dela planine Rudnik. Geološki zavod Univerziteta u Beogradu, 30, p.109-124 Terzić, M., Milojković, R. 1967: Bazaltoidne stene Rudnika. Geološki zavod Univerziteta u Beogradu, 33, p.309-318 Toljić, M ...
... H2O-NaCl solutions. Geochimica et Cosmochimica Acta, 57, p. 683-684 Bowen, N. 1915: The crystallization of haplobasaltic, haplodioritic, and related magmas. American Journal of Science 40, p. 161-185 Bowers, J. R., Kerrick, D. M., Furlong, K. P. 1990: Conduction model for the thermal evolution of ...
... histories in retrograded rocks. Journal of Petrology 33, p.965-1005 Inui, M., Toriumi, M. 2004: A Theoretical Study on the Formation of Growth Zoning in Garnet Consuming Chlorite. Journal of Petrology 45 (7) p. 1369-1392 Ishii, T., Robinson, P. T., Maekawa, H., Fiske, R. 1992: Petrological studies ...Kostić N. Bojan. Kontaktni metamorfizam gornjokrednih sedimentnih stena Rudnika, Univerzitet u Beogradu, Rudarsko-geološki fakultet, 2021
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A survey of greenhouse gases production in central European lignites
Anna Pytlak, Anna Szafranek-Nakonieczna, Weronika Goraj, Izabela Śnieżyńska, Aleksandra Krążała, Artur Banach, Ivica Ristović, Mirosław Słowakiewicz, Zofia Stępniewska (2021)... 1016/j.coal.2016.01.001. Saunois, M., Stavert, A.R., Poulter, B., Bousquet, P., Canadell, J.G., Jackson, R.B., Raymond, P.A., Dlugokencky, E.J., Houweling, S., Patra, P.K., Ciais, P., Arora, V.K., Bastviken, D., Bergamaschi, P., Blake, D.R., Brailsford, G., Bruhwiler, L., Carlson, K.M., Carrol, M., Castaldi ...
... the remaining parameters, e.g., concentrations of biogenic N and P, or overall EC, a large range of observed values was found, even in samples extracted from the same deposit (Table 2, Table 3). An example of this is the availability of P- PO4 in the Bełchatów samples, which ranged from 0.58 mg kg-1 (PGB\\W1) ...
... tightly related to speciation of the available nitrogen (Fig. 3). The Spearman's rank correlation values for Eh and N-NO3 were 0.49 (p < 0.05), while for N-NH4 0.52 (p < 0.05), suggesting that the more reduced lignites contained higher concentrations of the re- duced N form. Because N-NH4 was the dominant ...Anna Pytlak, Anna Szafranek-Nakonieczna, Weronika Goraj, Izabela Śnieżyńska, Aleksandra Krążała, Artur Banach, Ivica Ristović, Mirosław Słowakiewicz, Zofia Stępniewska. "A survey of greenhouse gases production in central European lignites" in Science of The Total Environment, Elsevier (2021). https://doi.org/10.1016/j.scitotenv.2021.149551
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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... ora S redna G ora Zone Zone S o u t h C a r p a t h i a n s S o u t h C a r p a t h i a n s ZagajicaDepression ZagajicaDepression P an nonian Basin P an nonian Basin S e r b ia n C a r p a t h i a n s S e r b ia n C a r p a t h i a n s B a l k a n i d e s B a l k a n ...
... A p e n n in e s A p e n n in e s C a rp a th ia n s C a rp a th ia n s ALCAPAALCAPA Tisza-D acia Tisza-D acia D inarides D inarides A d ria A d ria H e lle n id e s H e lle n id e s Balkan sideBalkan side Rhodope Rhodope deformation fronts suture zones retro-wedges P a n ...
... n i d e s M o e s i a n M o e s i a n P m l a t r f o P m l a t r f o T F T F TFTF C F C F M o r a v a V a l l e y C o r r i d o r M o r a v a V a l l e y C o r r i d o r Jastrebac Mts.Jastrebac Mts. Vršac Mts.Vršac Mts. Western Vardar Adria-derived nitsU Sava ...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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Geotehnički uslovi izgradnje tunela „Debelo brdo“ na autoputu E-80 Niš - Pločnik
Tunel „Debelo brdo“ nazvan je po najizraženijem relјefnom obliku na ovoj drugoj deonici autoputa E-80 Niš – Pločnik. Osnovnu geološku građu na lokaciji tunela čini Mio-Plioceni kompleks heterogenog litološkog sastava. Izgradnja tunela je predviđena delom u otvorenom iskopu dužine 240 m, a delom sa podzemnim iskopom dužine 190 m. U zoni tunela, padina je okarakterisana kao uslovno stabilna, pa bi neadekvatna zasecanja mogla da izazovu klizanja terena. Iz tih razloga, u okviru rada posebno su prikazani geotehnički uslovi izgradnje ...... cevnih ankera, iskop kalote tunela, Korak 6 P relaksacija stenske mase u predelu oporaca Korak 7 Iskop oporaca, postavljanje primarne podgrade u predelu oporaca, svoda, na nivou oporaca, relaksacija stenske mase u zoni oporaca-bokovima Korak 8 I , p - s r, napona u fazi iskopa za = 0 ...
... Literatura [1] i dr. izgradnju autoputa E-80 (SEETO Ruta 7): izgradnje trase autoputa, 202 p. [2] i dr. izgradnju autoputa E-80 (SEETO Ruta 7): od administrativnog prelaza Me izgradnje objekata p. [3] ; ; ; ; uslovi izgradnje autoputa E- - -82. [4] ; ; izgradnje autoputa E- - -92 ...
... (Beloljin) Nazvan je po samom brdu koje predstavlja sekciji autoputa Prokuplje istok, (km: 5+670 km: 14+300) tunela na km: 9+380 do km: 9+810 (Slika 1). P e kote su oko 300 m, a na izlaznom delu oko a kota iznad tunelske cevi oko 328 km: 9+700). -4 m. Generalni nagib padine je oko 8 do 100 e tunela ...Dragoslav Rakić, Radojica Lapčević, Irena Basarić Ikodinović, Dragan Lukić. "Geotehnički uslovi izgradnje tunela „Debelo brdo“ na autoputu E-80 Niš - Pločnik" in Četvrti Srpski kongres o putevima, 2-3. jun 2022., Beograd : Srpsko društvo za puteve Via Vita (2022)
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Development of terminological resources for expert knowledge: a case study in mining
Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Aleksandar Cvjetić. "Development of terminological resources for expert knowledge: a case study in mining" in Knowledge Management Research & Practice, Palgrave Macmillan (2015). https://doi.org/10.1057/kmrp.2015.10
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Spatial distribution of major and trace elements in artificial lakes in Serbia: health risk indices and suitability of water for drinking and irrigation purposes
Goran Marković, Aleksandar Ž. Kostić, Nebojša Đ. Pantelić, Radojka Maletić, Jana Štrbački, Jovan Cakić, Lazar Kaluđerović, Biljana P. Dojčinović, Angelo Maria Giuffrè, Jelena B. Popović-Djordjević (2023)Lakes and reservoirs are the main water resources for household, irrigation, and industrial use. Hence, it is necessary to control water pollution and have reliable information on water quality, which refers to its suitability for a particular purpose. The main objective of this study was to evaluate the suitability of water for drinking and irrigation purposes from ten artificial lakes on the territory of the Republic of Serbia. The physicochemical parameters were determined using standard analytical methods, whereas the ...Goran Marković, Aleksandar Ž. Kostić, Nebojša Đ. Pantelić, Radojka Maletić, Jana Štrbački, Jovan Cakić, Lazar Kaluđerović, Biljana P. Dojčinović, Angelo Maria Giuffrè, Jelena B. Popović-Djordjević. "Spatial distribution of major and trace elements in artificial lakes in Serbia: health risk indices and suitability of water for drinking and irrigation purposes" in Environmental Monitoring and Assessment, Springer Science and Business Media LLC (2023). https://doi.org/10.1007/s10661-023-11740-6
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Assessments of effects of implementation of strategic plans for development of Belgrade District heating system
The district heating system (DHS) is one of the key elements of the Belgrade energy system. Overview of the current state and basic characteristics of the DHS are presented in this paper. The focus is on the planned development of DHS and on the analyses of effects of realization of measures and projects defined by strategic documents related to DHS which are adopted by city authorities (Development Strategy of DHS and Strategy of Belgrade Development). Two exploratory scenarios were ...Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Miodrag Grujić. "Assessments of effects of implementation of strategic plans for development of Belgrade District heating system" in Sustainable Cities and Society, Elsevier BV (2020). https://doi.org/10.1016/j.scs.2020.102304
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Poboljšanje geotehničkih uslova izgradnje nasipa upotrebom geosintetika
Anastasija Radovanović (2024)Za potrebe izrade rada na Master akademskim studijama ,,Rudarsko-geološkog fakulteta,,, studijskog programa Geotehnika, pod mentorstvom prof. dr Gordane Hadži-Niković , izvršena je detaljna analiza stabilnosti kosina nasipa na Vranjskoj petlji. Geotehnička istraţivanja i ispitivanja terena izveo je “Zavod za geotehniku iz Instituta za puteve a.d. Beograd”, a investitor je “Javno preduzeće, Putevi Srbije”.Metodološki pristup koji je korišćen za analizu stabilnosti kosina nasipa jeste kabinetsko istraživanje dostavljene dokumentacije i geostatički proračuni analize stabilnosti kosina nasipa, korišćenjem savremenih softverskih alata.Krajnji zaključak izvedenih istraţivanja je da ...... Prilozi: 51 Inženjerskogeološka karta Anastasija 1.1 1:2000 29.05.2023. Radovanović TE OJ IO UH IK A C T A P O C T PE LI EH TH A K B A P T A P J K B A P T A P T E H E T C K A PT IP VI IT AJ IH OC T bj r || bj = |} > = o e C _ r = L = m > = ...
... prstima, niskoplastična, srednje 1 stišljiva, srednje vodopropusna, masivne teksture, zrnaste strukture. — Ž P QČ. ž Pijesak šljunkovit, sa manjim sadržajem drobine u masi. 3 4.0 < — p Drobina je od čvrstih stijenskih masa (pkeščar, dacit, škriljci | 3.0-3.4 3.0-3.41 = ; alP i dr.) Šljunak je ...
... LN A B-10 (375.75) pl Kompleks loporovitih sedimenato {PL!P) proslojovonje laporovite qline, peskovilih lapora i loporovitog peščara. fizičko-mehanička zona izmene kompleksg peskovitih lgpora, sa tragovima limonitizacije je p|D debljne 12 m {PUS) NF OG EN STRUKTURNE OZNAKE GRANICE IZDVOJENIH ...Anastasija Radovanović. Poboljšanje geotehničkih uslova izgradnje nasipa upotrebom geosintetika, 2024
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Contribution to the geotechnical classification of municipal waste landfills in Serbia
Management, Monitoring, Policy and Law, Nature and Landscape Conservation, Geochemistry and Petrology, Waste Management and Disposal,Geotechnical Engineering and Engineering Geology,Water Science and Technology,Environmental Chemistry,Environmental EngineeringDragoslav Rakić, Irena Basarić, Laslo Čaki, Slobodan Ćorić. "Contribution to the geotechnical classification of municipal waste landfills in Serbia" in Environmental Geotechnics, Thomas Telford Ltd. (2018). https://doi.org/10.1680/jenge.18.00028
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Two approaches to compilation of bilingual multi-word terminology lists from lexical resources
In this paper, we present two approaches and the implemented system for bilingual terminology extraction that rely on an aligned bilingual domain corpus, a terminology extractor for a target language, and a tool for chunk alignment. The two approaches differ in the way terminology for the source language is obtained: the first relies on an existing domain terminology lexicon, while the second one uses a term extraction tool. For both approaches, four experiments were performed with two parameters being ...Branislava Šandrih, Cvetana Krstev, Ranka Stanković. "Two approaches to compilation of bilingual multi-word terminology lists from lexical resources" in Natural Language Engineering, Cambridge University Press (CUP) (2020). https://doi.org/10.1017/S1351324919000615
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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 ...... for calculations;: Figure 5: The map of the diffuse solar radiation (Rich P.M., Fu P., 1999). Figure 6: The examples of the overlay of viewshed with maps of direct and diffuse solar radiation (Rich P.M., Fu P., 1999). 12% International Conference on Energy and Climate Change, 9-11 October 2019 ...
... radiation) sectors, respectively (Fu P., Rich P.M., 2000): Globaloi = Dirto + Diftot (1) Direct solar radiation Total direct insolation (Dirw) for a given location is the sum of the direct insolation (Diro,) from all sun map sectors respectively (Fu P., Rich P.M., 2000): Diroer= ž Dire ...
... 10.3. available at: http://desktop.arcgis.com/en/arcmap/10.3/tools/spatial-analyst-toolbox/an-overview-of-the- solar-radiation-tools.htm. Fu P., Rich P. M., 2000. "The Solar Analyst 1.0. User Manual", Helios Environmental Modeling Institute (HEM!), Lawrence, available at: http://professorpaul. ...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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Optimizacija vodosnabdevanja podzemnim vodama u Srbiji
Dušan Polomčić, Zoran Stevanović, Petar Dokmanović, Vesna Ristić-Vakanjac, Bojan Hajdin, Saša Milanović, Dragoljub Bajić (2012)... podzemnih voda srbije — nova metoda “izdan”, Zbornik radova 15 Kongresa geologa Srbije, pp.585-590, Beograd POLOMCIC D., STEVANOVIC Z., DOKMANOVIC P., PAPIC P., RISTIC VAKANJAC V., HAJDIN B., MILANOVIC S., BAJIC D., 2011: Vodosnabdevanje podzemnim vodama u Srbiji - stanje i perspektive. Monografija »40 ...
... Dokmanovié, Vesna Ristié Vakanjac, Bojan Hajdin, SaSa Milanovic, Dragoljub Baji¢ STEVANOVIC Z., KOZAK P., LAZIC M., SZANYI J., POLOMCIC D., KOVACS B., TOROK J., MILANOVIC S., HAJDIN B. AND PAPIC P., 2011 Towards sustainable management of transboundary Hungarian — Serbian aquifer. In: Transboundary Water ...
... (m 3 /s) . Yield of groundwater sources in Serbia according to the type of aquifer (m 3 /s) a a A a a O (V a) a Ka a a P a a U Ba a Ba a 1,45 3,57 0,43 - - 5,45 S Ma , / Ta 6,97 0,34 0,50 0,03 - 7,84 a a S a 2,58 - 0,84 0,43 - 3,85 I a a 0,62 - 0,06 ...Dušan Polomčić, Zoran Stevanović, Petar Dokmanović, Vesna Ristić-Vakanjac, Bojan Hajdin, Saša Milanović, Dragoljub Bajić. "Optimizacija vodosnabdevanja podzemnim vodama u Srbiji" in Zbornik radova XIV srpskog simpozijuma o hidrogeologiji sa međunarodnim učešćem, Zlatibor, 17-20. maj 2012. godine , Beograd : Rudarsko-geološki fakultet (2012)
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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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A Multilingual Evaluation Dataset for Monolingual Word Sense Alignment
Sina Ahmadi, John P McCrae, Sanni Nimb, Fahad Khan, Monica Monachini, Bolette S Pedersen, Thierry Declerck, Tanja Wissik, Andrea Bellandi, Irene Pisani, [...] Ranka Stanković and others (2020)Aligning senses across resources and languages is a challenging task with beneficial applications in the field of natural language processing and electronic lexicography. In this paper, we describe our efforts in manually aligning monolingual dictionaries. The alignment is carried out at sense-level for various resources in 15 languages. Moreover, senses are annotated with possible semantic relationships such as broadness, narrowness, relatedness, and equivalence. In comparison to previous datasets for this task, this dataset covers a wide range of languages ...... (2001). Dicionário da lı́ngua portuguesa contemporânea. Lisboa: Academia das Ciências de Lis- boa e Editorial Verbo, 2. Cimiano, P., McCrae, J. P., and Buitelaar, P. (2016). Lexi- con Model for Ontologies: Community Report. Dahlerup, V. (1918). Ordbog over det danske sprog, vol- ume 1. Gyldendal ...
... Springer. Dónaill, N. O. and Maoileoin, P. U. (1991). An Foclóir Beag. An Gum. Erjavec, T. and Fiser, D. (2006). Building Slovene Word- Net. In Proceedings of the Fifth International Con- ference on Language Resources and Evaluation, pages 1678–1683. A. P. Evgenyeva, editor. (1999). Dictionary ...
... Workshop at LREC 2018: Multilingual FrameNets and Constructions, pages 51–55. Osenova, P. and Simov, K. (2017). Challenges behind the data-driven bulgarian wordnet (bultreebank bulgarian wordnet). In John P. McCrae, et al., editors, Proceed- ings of the LDK 2017 Workshops: 1st Workshop on the OntoLex ...Sina Ahmadi, John P McCrae, Sanni Nimb, Fahad Khan, Monica Monachini, Bolette S Pedersen, Thierry Declerck, Tanja Wissik, Andrea Bellandi, Irene Pisani, [...] Ranka Stanković and others . "A Multilingual Evaluation Dataset for Monolingual Word Sense Alignment" in Proceedings of the 12th Conference on Language Resources and Evaluation (LREC 2020), Marseille, European Language Resources Association (ELRA) (2020)
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Nelinearno dinamičko modelovanje potresa izazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija
Srđan D. Kostić (2013-11-04)U ovoj disertaciji, cilj istraživanja bio je određivanje dinamičkih svojstava potresaizazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija.Analiza potresa izvedena je sa dva aspekta – u prvom delu istraživanja izučavane suvremenske serije oscilovanja tla za vreme potresa, a u drugom delu vršena je analizastabilnosti fenomenološkog Baridž-Knopof modela bloka sa oprugom. Vremenske serijeoscilovanja tla proučavane su primenom postupka analize surogat podataka, kao ikorišćenjem metoda analize nelinearnih vremenskih serija (primena teoreme orazvijanju skalarne vremenske serije). Analiza vremenskih serija izvedena je ...potres, naponsko stanje, podzemne prostorije, bifurkacije, vremenskaserija, deterministički haos, stohastičnost, perturbacije, vremensko kašnjenje, jačina trenja... om obliku, uvodeći nove promenljive: 2 0 0 0 0 0 , / , / , / / , / , / p p p j p j c c p c p T t k m U k X F V V V F k m k k k (7.3) Veličina 2π/ p predstavlja period oscilacija jednog bloka sa oprugom u odsustvu sile trenja klizanja ...
... ν, │p(i+ν) – p(t+ν)│= ν, veće od početnog rastojanja ; u suprotnom, ≈ ν. Nakon vremenskog intervala ν, traži se nova najbliža tačka, p(j), čije je rastojanje u odnosu na tačku p(t+ν) jednako početnom , pod uslovom da je ugaona razlika između vektora koji su obrazovani tačkama p(t+ν) i p(i+ν) ...
... b i k m n i m n s D n p p b (6.23) gde s predstavlja broj različitih tačaka p(k) koje ispunjavaju uslov da je │p(k) – p(i)│< . Srednja vrednost logaritma Di(Δn), dobijena za nekoliko različitih referentnih tačaka p(i), predstavlja efektivnu ...Srđan D. Kostić. "Nelinearno dinamičko modelovanje potresa izazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2013-11-04)
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Nelinearno dinamičko modelovanje potresa izazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija
Srđan D. Kostić (2013-11-04)U ovoj disertaciji, cilj istraživanja bio je određivanje dinamičkih svojstava potresaizazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija.Analiza potresa izvedena je sa dva aspekta – u prvom delu istraživanja izučavane suvremenske serije oscilovanja tla za vreme potresa, a u drugom delu vršena je analizastabilnosti fenomenološkog Baridž-Knopof modela bloka sa oprugom. Vremenske serijeoscilovanja tla proučavane su primenom postupka analize surogat podataka, kao ikorišćenjem metoda analize nelinearnih vremenskih serija (primena teoreme orazvijanju skalarne vremenske serije). Analiza vremenskih serija izvedena je ...potres, naponsko stanje, podzemne prostorije, bifurkacije, vremenskaserija, deterministički haos, stohastičnost, perturbacije, vremensko kašnjenje, jačina trenja... om obliku, uvodeći nove promenljive: 2 0 0 0 0 0 , / , / , / / , / , / p p p j p j c c p c p T t k m U k X F V V V F k m k k k (7.3) Veličina 2π/ p predstavlja period oscilacija jednog bloka sa oprugom u odsustvu sile trenja klizanja ...
... ν, │p(i+ν) – p(t+ν)│= ν, veće od početnog rastojanja ; u suprotnom, ≈ ν. Nakon vremenskog intervala ν, traži se nova najbliža tačka, p(j), čije je rastojanje u odnosu na tačku p(t+ν) jednako početnom , pod uslovom da je ugaona razlika između vektora koji su obrazovani tačkama p(t+ν) i p(i+ν) ...
... b i k m n i m n s D n p p b (6.23) gde s predstavlja broj različitih tačaka p(k) koje ispunjavaju uslov da je │p(k) – p(i)│< . Srednja vrednost logaritma Di(Δn), dobijena za nekoliko različitih referentnih tačaka p(i), predstavlja efektivnu ...Srđan D. Kostić. "Nelinearno dinamičko modelovanje potresa izazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2013-11-04)
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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 ...... Bartelt P, Buehler Y, Christen M, Deubelbeiss Y, Graf C, McArdell B W (2013) RAMMS–rapid mass movement simulation, A modelling system for debris flows in research and practice, user manual v1.5, debris flow, Institute for Snow and Avalanche Research SLF, pp 126. Christen M, Bartelt P, Kowalski ...
... 161-168. Christen M, Bartelt P, Kowalski J, Stoffel L (2007) Calculation of dense snow avalanches in three-dimensional terrain with the numerical simulation program RAMMS. Differential Equations.vol. Proceeding, pp. 709-716. Christen M, Kowalski J, Bartelt P (2010a) RAMMS: Numerical simulation ...
... of Geophysics 35 (3): 245-296. Jakob M, Hungr O (2005) Debris-flow hazards and related phenomena. Blondel, P. Springer Praxis Book in Geophysical Sciences, Chichester, UK .1723 p. Krušić, J., Andrejev, K.,Andrejev, K., Abolmasov, B, Marjanović, M.(2017) Preliminary results of the Selanac debris ...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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Утицај промене нивоа подземне воде за услове плитког фундирања у крупнозрном тлу
Милана Мичета (2024)Подземне воде представљају изузетно важан природни ресурс, као и важну компоненту система, којим је представљено тло. У складу са тим, приликом пројектовања плитких темеља на крупнозрном тлу, односно приликом анализе граничне носивости и слегања, треба узети у обзир и утицај воде. Верује се да ниво подземне воде значајно смањује носивост тла, док се слегања значајно повећавају. Terzaghi (1943) је први сугерисао да се потапањем масе тла, његова носивост смањује за половину, док се слегање удвостручује. Циљ овог рада је ...... al-prB E Š IIeckopBuHrTe npamuHe Jauc XyMH3HpaHe =|S =|Š š S IIeckoBHTe npatniHe B-42 e = žr (76.31) < il = QO P -·Dpr- = TIpauiHacTH IeCKOBH leo @ Š (CPT-4 < al-pre,p,p,pa || š “DHHO3pHH IIeCKOBH, CpeJibe 30HJeHH š) al [} > | || ž Ž OuHoyapHu rtecKoBH, J00po 30HjeHH Ž> d IIIbyHKOBHTH ...
... | “ : ' a a [ a t al c ? | ___ |uscs "Ze } I — —- -----------a-i---–-- |_50-_750m | P | | | | | |I |___ioo|__o|___ | -- 9.70 – 10.00m p-II |20.6|16.8| 22.8|2.72|0.621 |100 100) 61.2 0| SU 8.70 – 9.00 m p-II 100) npuzor 0p. 5 HYMEPMHUKA JIOKVMEHTATIHJA IIPOPAUVH I PAHHUHE HOCHBOCTH – METOJIA ...
... 2·Bž·}gić;+(p/2)=1+0 s.=1 0 Sq=Sy=1+0.1'Šy%'5+(p/2)=1+() MuzaaHa Muguera, T615/21 npuzor 0p. 6 [ ||| OPakropu „yOHHe (byH)mpatba: d, =1+0.2· %f tg(45 + o/2) = 1+ 0.2 = · tg(45 + 27/2) d.=1+0.2 ·1.5· tg58.5* = 1 + 0.2 · 1.5· 1.63 = 1 + 0.5 d.=1.5 d, =d, = 1+0.1·%·tg(45+(p/2) = 1+0.1:5 ...Милана Мичета. Утицај промене нивоа подземне воде за услове плитког фундирања у крупнозрном тлу, 2024
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Синтеза и карактеризација керамике на бази сфена
Jelena R. Pantić (2015-07-10)Механохемијска активација стехиометријске смеше реактаната TiO2, SiO2 и CaCO3 показала се као веома успешна и једноставна метода за добијање сфена (CaTiSiO5). На основу мерења релативних густина свих синтерованих узорака установљено је да максималну густину од 93,9 % имају узорци који су активирани 30 минута и синтеровани на 1200 °С. Микроструктурном анализом, тј. анализом слика синтерованих узорака активираних 30 минута, које су добијене скенирајућом електронском микроскопијом, опажа се бимодална расподела величине зрна, са просечном величином од 3 μm, односно 5 ...сфен, механохемија, Ритвелдова метода, оптичка спектроскопија, микроструктурна анализа, фазна трансфоpмација, чврсти раствори... 75 10 20 30 40 50 60 70 80 90 Q Q Q P-CaTiO 3 Q-SiO 2 P P P P P P P P 1200 °C 1100 °C 1000 °C 900 °C 30 min 2° PP Слика 4.1.4.3. Дијаграм праха сфена30 након синтеровања на температурама од 900 - 1200 °С. Симболи: P - CaTiO3, Q - SiO2. Необележени пикови припадају ...
... на температури 1250 °C. 20 40 60 80 P-CaTiO 3 Q-SiO 2 1200 °C 1100 °C 1000 °C 900 °C 15 min 2° Q Q Q P P P P P P P PPP Слика 4.1.4.2. Дијаграм праха сфена15 након синтеровања на температурама од 900 - 1200 °С. Симболи: P - CaTiO3, Q - SiO2. Необележени пикови припадају ...
... Јелена Пантић 78 20 40 60 80 cccc vp a a a a v p p p p p v v vr r q q aa c v r v rv ° pp p p p pp 1300 °C 1212 °C 920 °C 872 °C 818 °C 670 °C a - TiO 2 v - CaSiO 3 r - TiO 2 q - SiO 2 p - CaTiO 3 c - CaCO 3 Слика 4.1.4.7. Дијаграм праха ...Jelena R. Pantić. "Синтеза и карактеризација керамике на бази сфена" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-07-10)