Претрага
643 items
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Development of a petrographic classification system for organic particles affected by self-heating in coal waste. (An ICCP Classification System, Self-heating Working Group – Commission III)
M. Misz-Kennan, J. Kus, D. Flores, C. Avila, Z. Büçkün, N. Choudhury, K. Christanis, J.P. Joubert, S. Kalaitzidis, A.I. Karayigit, M. Malecha, M. Marques, P. Martizzi, J.M.K. O'Keefe, W. Pickel, G. Predeanu, S. Pusz, J. Ribeiro, S. Rodrigues, A.K. Singh, I. Suárez-Ruiz, I. Sýkorová, N.J. Wagner, D. Životić (2020)Self-heating of coal waste is a major problem in the leading coal-producing and consuming countries, independent of the recent or past coal exploitation history. The phenomenon of self-heating is dependent on many factors such as the properties of organic matter (maceral composition and rank), moisture and pyrite content, climate effects, and storage conditions (shape of the dump or compaction of the coal waste). Once deposited, coal waste undergoes oxidation, which can lead to self- heating with the overall temperatures ...M. Misz-Kennan, J. Kus, D. Flores, C. Avila, Z. Büçkün, N. Choudhury, K. Christanis, J.P. Joubert, S. Kalaitzidis, A.I. Karayigit, M. Malecha, M. Marques, P. Martizzi, J.M.K. O'Keefe, W. Pickel, G. Predeanu, S. Pusz, J. Ribeiro, S. Rodrigues, A.K. Singh, I. Suárez-Ruiz, I. Sýkorová, N.J. Wagner, D. Životić. "Development of a petrographic classification system for organic particles affected by self-heating in coal waste. (An ICCP Classification System, Self-heating Working Group – Commission III)" in International Journal of Coal Geology, Elsevier BV (2020). https://doi.org/10.1016/j.coal.2020.103411
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Application of Peleg model on mass transfer kinetics during osmotic dehydratation of pear cubes in sucrose solution
Vesna Pavelkić, Tanja Brdarić, Marija Petrović, Gavrilo Šekularac, Milica Košević, Lato Pezo, Marija Ilić (2015)The applicability of Peleg model was investigated for predicting mass transfer kinetics during the osmotic dehydration (OD) process of pears, at different concentrations (40, 60 and 70%, w/w) and temperatures (20, 35 and 50 °C) of sucrose solution. Increase in sucrose solution concentration resulted in higher water loss (WL) and solid gain (SG) values through the osmotic treatment period. After 360 min of osmotic treatment of pears, WL ranged from 23.71 to 31.68% at 20 °C, from 24.80 to ...Vesna Pavelkić, Tanja Brdarić, Marija Petrović, Gavrilo Šekularac, Milica Košević, Lato Pezo, Marija Ilić. "Application of Peleg model on mass transfer kinetics during osmotic dehydratation of pear cubes in sucrose solution" in Chemical Industry and Chemical Engineering Quarterly (2015). https://doi.org/10.2298/CICEQ141014004P
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Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae
Hans Peter Nytoft, Geir Kildahl-Andersen, Sofie Lindström, Frode Rise, Achim Bechtel, Danica Mitrović, Nataša Đoković, Dragana Životić, Ksenija A. Stojanović (2019)Two previously unidentified dehydroabietane isomers were isolated from Miocene Serbian lignite and Rhaetian (Late Triassic) coaly mudstones from South Sweden and characterized using NMRspectroscopy as cis- and trans-dehydroicetexane. Both have a 9(10?20)-abeo-abietane or icetexane skeleton, consisting of a 6-7-6 tricyclic framework with seven carbons in ring B instead of the usual six in common diterpanes of the abietane-type. Dehydroicetexanes can be detected using GC-MS-MS in m/z 270?146 chromatograms without interference from dehydroabietane or other isomers. Dehydroicetexanes are often abundant ...Hans Peter Nytoft, Geir Kildahl-Andersen, Sofie Lindström, Frode Rise, Achim Bechtel, Danica Mitrović, Nataša Đoković, Dragana Životić, Ksenija A. Stojanović. "Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae" in Organic Geochemistry, Elsevier BV (2019). https://doi.org/10.1016/j.orggeochem.2019.01.001
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Managing mining project documentation using human language technology
Purpose: This paper aims to develop a system, which would enable efficient management and exploitation of documentation in electronic form, related to mining projects, with information retrieval and information extraction (IE) features, using various language resources and natural language processing. Design/methodology/approach: The system is designed to integrate textual, lexical, semantic and terminological resources, enabling advanced document search and extraction of information. These resources are integrated with a set of Web services and applications, for different user profiles and use-cases. Findings: The ...Digital libraries, Information retrieval, Data mining, Human language technologies, Project documentationAleksandra Tomašević, Ranka Stanković, Miloš Utvić, Ivan Obradović, Božo Kolonja . "Managing mining project documentation using human language technology" in The Electronic Library (2018). https://doi.org/10.1108/EL-11-2017-0239
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Laboratory Testing of Nanosilica- Reinforced Silicate and Polyacrylamide Gels
Irina Zahirovic, Dušan Danilović, Milica Šuput Vranjin, Miloš Tripković. "Laboratory Testing of Nanosilica- Reinforced Silicate and Polyacrylamide Gels" in SPE Journal (2023)
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The effect of finite driving rate on avalanche distributions
Statistics, Probability and Uncertainty,Statistics and Probability,Statistical and Nonlinear PhysicsSonja Radić, Sanja Janićević, Dragutin Jovković, Đorđe Spasojević. "The effect of finite driving rate on avalanche distributions" in Journal of Statistical Mechanics: Theory and Experiment, IOP Publishing (2021). https://doi.org/10.1088/1742-5468/ac1f12
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Long-term planning methodology for improving wood biomass utilization
The insufficiently developed forest management system is often followed by undeveloped forest resources supply chain and insufficient institutional support. These cause inefficient usage of fuel-wood as well as huge amounts of unused forest residues. In order to achieve optimal and long-term sustainable utilisation of biomass, an original methodology based on the interaction of mathematical optimization and backcasting approach has been developed. Mathematical optimization is used for both generation and consideration of techno-economic parameters of the forest biomass supply chain. ...Vladimir Vukašinović, Dušan Gordić, Marija Živković, Davor Koncalović, Dubravka Živković. "Long-term planning methodology for improving wood biomass utilization" in Energy, Elsevier BV (2019). https://doi.org/10.1016/j.energy.2019.03.105
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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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Mafic alkaline metasomatism in the lithosphere underneath East Serbia: Evidence from the study of xenoliths and the host alkali basalts
Effects of mafic alkaline metasomatism have been investigated by a combined study of the East Serbian mantle xenoliths and their host alkaline rocks. Fertile xenoliths and tiny mineral assemblages found in depleted xenoliths have been investigated. Fertile lithologies are represented by clinopyroxene (cpx)-rich lherzolite and spinel (sp)-rich olivine websterite containing Ti–Al-rich Cr-augite, Fe-rich olivine, Fe–Al-rich orthopyroxene and Al-rich spinel. Depleted xenoliths, which are the predominant lithology in the suite of East Serbian xenoliths, are harzburgite, cpx-poor lherzolite and rare ...Cvetković Vladica, Downes Hilary, Höck Volker, Prelević Dejan, Lazarov Marina. "Mafic alkaline metasomatism in the lithosphere underneath East Serbia: Evidence from the study of xenoliths and the host alkali basalts" in Geological Society Special Publication 337, London, United Kingdom :Geological Society (2010): 213-239. https://doi.org/10.1144/SP337.11
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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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Geotermalne karakteristike područja Semberije , Republika Srpska
Igor Glavaš (2024)Cilj završnog rada predstavlja, opis geotermalnih karakteristika područja Semberije, Republika Srpska, BiH.Rad se sastoji od opšteg dijela u kojem se navode osnovne karakteristike područja (geomorfološke, geografske, hidrološke,hidrometeorološke, geološke, tektonske i hidrogeološke) i specijalnog dijela koji detaljnije ulazi u tematiku osobina geotermalne energije i njihovih karakteristika u zadatom području kao i definisanje geotermalnog potencijala koje to područje ima.Sa prognoznim litološkim profilima 6 dubokih istražnih bušotina su izrađena 2 regionalna geološka, a njegovom konverzijom i hidrogeološka profila na osnovu kojih je, stečena ...... 796.5 m. Temperatura termalne vode bunara u toku testa Je porasla sa 28 "C na 68 "C za sat vremena crpljenja, a nakon 2 sata na 70 "C, nakon 3 sata na 71 "C, šest sati na 72 'C, a nakon 48 sati od početka crpljenja na 73 'C kolika je ostala do kraja crpljenja odnosno do 21-og dana. 3.2.2. Tipovi ...
... niske entalpije, temperature fluida < 100 *C b) Geotermalni resursi srednje entalpije, temperature fluida 100 - 200 'C c) Geotermalni resursi visoke entalpije, temperature fluida >200 'C Podjela u Republici Srbiji: L · Subgeotermalni resursi (do 30 'C) a. Subhidrogeotermalni resursi b. Su ...
... 1 pokazao da do povećavanja temperature za 1 "C se dešava na svakih 15.8 m, dok je prosjek u svijetu porast temperature za 1 'C na svakih 33 m dubine. Utvrđeno je da na 1 160 m izmjerena temperatura 73 "C, dok na dubini od 1345.5 m ona iznosi 85 "C. Bušotina S-2 je nabušila termomineralnu vodu ...Igor Glavaš. Geotermalne karakteristike područja Semberije , Republika Srpska, 2024
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Značaj geografske širine za lociranje uzročnika magnetnih anomalija kod prospekcije arheoloških lokaliteta
Vesna Cvetkov (2020)... and Remote Sensing. Cambrid- 24 C u r re n t i n t e rd i s c i p l i n a r y s t u d i e s i n t e c h n o l o g y i n t h e a rc h a e o l o g y o f t h e s o u t h - e a s t E u ro p e ge University Press, Cambridge. Tsokas, G. N., Papazachos, C. B. Loucoyannakis, M. Z., Karousova ...
... magnetne anomalije doprinelo je da magnetometrija postane značajan alat u arheologiji. Smatra se da su istra- 16 C u r re n t i n t e rd i s c i p l i n a r y s t u d i e s i n t e c h n o l o g y i n t h e a rc h a e o l o g y o f t h e s o u t h - e a s t E u ro p e živači Laboratorije ...
... grobovi, rovovi i ostale arheloške strukture veza- ne za iskopavanje i premeštanje gornjih slojeva tla. 18 C u r re n t i n t e rd i s c i p l i n a r y s t u d i e s i n t e c h n o l o g y i n t h e a rc h a e o l o g y o f t h e s o u t h - e a s t E u ro p e Otklanjanje asimetrije ...Vesna Cvetkov. "Značaj geografske širine za lociranje uzročnika magnetnih anomalija kod prospekcije arheoloških lokaliteta" in Aktuelna interdisciplinarana istraživanja tehnologije u arheologiji jugoistočne Evrope: Zbornik radova, Prvi skup Sekcije za arheometriju, arheotehnologiju, geoarheologiju i eksperimentalnu arheologiju Srpskog arheološkog društva, Beograd, 28.02.2020. , Beograd : Srpsko arheološko društvo (2020)
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Actual contamination of the Danube and Sava rivers at Belgrade (2013)
Milan Antonijević, Marija Arsović, Josef Cáslavský, Vesna Cvetković, Predrag Dabić, Mladen Franko, Gordana Ilić, Milena Ivanovic, Nevena Ivanović, Milica Kosovac, Dragana Medić, Slobodan Najdanović, Milica Nikolić, Jovana Novaković, Tatjana Radovanović, Djurdjina Ranić, Bojan Šajatović, Gorica Špijunović, Ivana Stankov, Jelena Tošović, Polonca Trebse, Olivera Vasiljević, Jan Schwarzbauer (2014)rečni sistemi, stanje zagađenja, organski zagađivači, teški metali, skrining analize, non-target screening... was 3 min hold at 60 °C, 60 °C to 300 °C at a rate of 3 °C min-1 and a 20 min hold at 300 °C. The injection was performed via a split/splitless injector at 270 °C; the splitless time was 60 s. The carrier gas was helium at a velocity was 2 cm s-1 and a source temperature of 200 °C. The ____________ ...
... 45. C. Yrieix, C. Gonzalez, J. M. Deroux, C. Lacoste, J. Leybros, Water Res. 30 (1996) 1791 46. H. M. Kuch, K. Ballschmiter Environ. Sci. Technol. 35 (2001) 3201. ___________________________________________________________________________________________________________________________ (C) 2014 ...
... J. Sarasa, M. C. Martinez, M. P. Ormad, M. S. Mutuberria, J. L. Ovelleiro, Water Res. 27 (1993) 1167 4. L. Guzzella, A. Gronda, Acqua Aria 6 (1995) 641 5. I. R. Santos, E. V. Silva-Filho, C. E. Schaefer, M. R. Albuquerque-Filho, L. S. Campos, Mar. Pollut. Bull. 50 (2005) 85 6. C. F. Mason, Biology ...Milan Antonijević, Marija Arsović, Josef Cáslavský, Vesna Cvetković, Predrag Dabić, Mladen Franko, Gordana Ilić, Milena Ivanovic, Nevena Ivanović, Milica Kosovac, Dragana Medić, Slobodan Najdanović, Milica Nikolić, Jovana Novaković, Tatjana Radovanović, Djurdjina Ranić, Bojan Šajatović, Gorica Špijunović, Ivana Stankov, Jelena Tošović, Polonca Trebse, Olivera Vasiljević, Jan Schwarzbauer. "Actual contamination of the Danube and Sava rivers at Belgrade (2013)" in Journal of the Serbian Chemical Society, National Library of Serbia (2014). https://doi.org/10.2298/JSC131105014A
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Freeze-dried nanocrystal dispersion of novel deuterated pyrazoloquinolinone ligand (DK-I-56-1): Process parameters and lyoprotectant selection through the stability study
Jelena R. Mitrović, Maja Bjelošević Žiberna, Aleksandar Vukadinović, Daniel E. Knutson, Dishary Sharmin, Aleksandar Kremenović, Pegi Ahlin Grabnar, Odon Planinšek, Dominique Lunter, James M. Cook, Miroslav M. Savić, Snežana D. Savić (2023)Recently, nanocrystal dispersions have been considered as a promising formulation strategy to improve the bioavailability of the deuterated pyrazoloquinolinone ligand DK-I-56-1 (7‑methoxy-2-(4‑methoxy-d3-phenyl)-2,5-dihydro-3H-pyrazolo[4,3-c]quinolin-3-one). In the current study, the freeze-drying process (formulation and process parameters) was investigated to improve the storage stability of the previously developed formulation. Different combinations of lyoprotectant (sucrose or trehalose) and bulking agent (mannitol) were varied while formulations were freeze-dried under two conditions (primary drying at -10 or -45 °C). The obtained lyophilizates were characterized in terms ...... transition temperature of the maximally freeze-concentrated solution (Tg'), liquid samples were cooled from 25 "C to -80 "C at a rate of -0.5 "C/min and then heated to 50 "C at a rate of 10 "C/min. The value of Tg' was characterized as the midpoint of the glass transition. This analysis was performed ...
... (labeled as placebo). To characterize the final lyophilizates, samples were cooled from 25 "C to -30 "C (cooling rate 10 "C/min), held at -30 "C for one minute, and then heated to 230 "Cata rate of 10 "C/min. All measurements were performed using DSC1 (Mettler Toledo, Switzerland) under a nitrogen ...
... samples were frozen at -80 "C for 3 h and then freeze- dried in a Beta 1–8 K freeze dryer (Martin Christ, Osterode am Harz, Germany) for 24 h, with primary drying at -10 "C and 0.340 mbar and secondary drying at 25 "C. Samples were stored in sealed vials at 25 "C, and physicochemical charac ...Jelena R. Mitrović, Maja Bjelošević Žiberna, Aleksandar Vukadinović, Daniel E. Knutson, Dishary Sharmin, Aleksandar Kremenović, Pegi Ahlin Grabnar, Odon Planinšek, Dominique Lunter, James M. Cook, Miroslav M. Savić, Snežana D. Savić. "Freeze-dried nanocrystal dispersion of novel deuterated pyrazoloquinolinone ligand (DK-I-56-1): Process parameters and lyoprotectant selection through the stability study" in European Journal of Pharmaceutical Sciences, Elsevier BV (2023). https://doi.org/10.1016/j.ejps.2023.106557
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A WordNet Ontology in Improving Searches of Digital Dialect Dictionary
In this paper, we present a method for automatic generation of a digital resource, which connects all indirect synonyms of a dialect term to all indirect synonyms of a corresponding term in the standard language, aiming to improve the search of a digital dialect dictionary. The method uses SWRL rules defined in the Serbian WordNet ontology to identify sets of synonymous words. It also uses e-dictionaries to produce correct lemmas in standard language that users usually employ in searches. ...... format. "[rule3:(?a eg:label ?b)(?a eg:also_see ?c)(?c eg:label ?e) -> (?b eg:indirectSynonymy ?7e)]" "[rule4:(?a eg:label ?b)(?a eg:verb_group ?c)(?c eg:label ?e) -> (?b eg:indirectSynonymy 7e)]" "[rule5:(?a eg:label ?b)(?a eg:hyponym ?c)(?c eg:label ?e) -> (?b eg:indirectSynonymy 7e)]" By looking ...
... "[rule6:(?a eg:similar_to ?c)(?a eg:label ?b)(?c eg:synonym 7d) (?d eg:label ?e) -> (?b eg:indirectSynonymy 7e)]" "[rule7:(?a eg:also_see ?c)(?a eg:label ?b)(?c eg:synonym 7d) (?d eg:label ?e) -> (?b eg:indirectSynonymy 7e)]" "[rule8:(?a eg:verb_group ?c)(?a eg:label ?b)(?c eg:synonym 7d) (?d eg:label ...
... eg:similar_to ?c)(?a eg:label ?b)(?c eg:also_see 7d) (?d eg:synonym ?e)(?e eg:label ?f)->(?b eg:indirectSynonymy ?f)]" "[rule11:(?a eg:verb_group ?c)(?a eg:label ?b)(?c eg:also_see 7d) (?d eg:synonym ?e)(?e eg:label ?f)->(?b eg:indirectSynonymy ?f)]" "[rule12:(?a eg:hyponym ?c)(?a eg:label ?b)(?c eg:also_see ...Miljana Mladenović, Ranka Stanković, Cvetana Krstev. "A WordNet Ontology in Improving Searches of Digital Dialect Dictionary" in New Trends in Databases and Information Systems: ADBIS 2017 Short Papers and Workshops - SW4CH (Semantic Web for Cultural Heritage) 767, Springer International Publishing (2017). https://doi.org/10.1007/978-3-319-67162-8_37
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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 ...... m hi= 2.8m eOJbHHa cuoja bs= 1.1 m y=20.6/10.6 kN/m* y=20.7/10.7 kN/m?* sanpeMHHcka TexkuHa | - y=19.2/0.2 kN/m? y=20/10 kN/m? KoxeaHja c=4kPa c=3kPa c=0 c=0 yrao yHyTpatiber _50gq0o _9o =349 =35 9 Tpema q=28 q= 27 q= 34 q= 35 OTIIOp BpXa KOHyCca q= 1500 kPa q-= 3000 kPa q-= 5000 kPa q= 7500 ...
... 3.3 m eOJbHHa cuoja bs= 1.1 m hi= 2.8m y=20/10 kN/m? y=20.6/10.6 kN/m* y=20.7/10.7 kN/m?* aarpeMHHcKa Te)kHHa_ y=19.2/0.2 kN/m* KoxeaHja c=4kPa c=3kPa c=0 c=0 yrao yHyTpatiber _50gq0o _9o =349 =35 9 Tpema q=28 q= 27 q= 34 q= 35 OTIIOp BpXa KOHyCca q= 1500 kPa q-= 3000 kPa q-= 5000 kPa q= 7500 ...
... 6/10.6 kN/mš | y= 20.7/10.7 kN/m3 c=4kPa c=3 kPa 0 0 q= 289 q= 279 q= 349 q= 359 B=1m D=1.5m qr = c· N.s.dci, +y · Dy · Nasqdaqiq + 0.5 · y · B · N,sy,dyLy “akTopH HOCHBOCTH: N. = (Nq, — 1) * ctg o == (13.2 – 1) ·ctg 27* = 12.2 · 1.96 N. = 23.91 c Na = tg?(45 + o/2) · e"180 = tg?(45 ...Милана Мичета. Утицај промене нивоа подземне воде за услове плитког фундирања у крупнозрном тлу, 2024
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Hyperpycnites within the Devonian-Carboniferous flysch of the Carpatho-Balkanides (Kostadinovica, eastern Serbia)
Miloš Radonjić (2020)This study presents new discoveries of vascular plants and the trace fossil Dictyodora liebeana (GEINITZ) from the Devonian–Carboniferous Kučaj-Zvonce flysch of the Carpatho-Balkanides and the implications of this fossil association for its sedimentary setting. The occurrence of the described plant debris in a deep-marine environment indicates the presence of hyperpycnites within the siliciclastic turbidites exposed at the Kostadinovica locality. The sedimentological data and the characteristics of the fossil material support the proposed model in which the sediment was at ...Mississippian flora, Dictyodora liebeana (GEINITZ), hyperpycnites, Kučaj-Zvonce flysch, Carpatho-Balkanides... part. (b) Upper part of unit B near the transi- tion into unit C. Two massive sandstone beds are marked as B23 and B25 and are truncated by normal faults (Fn). Figure 6. Sedimentary characteristics of unit C. (a) The central part of unit C showing repetition of thin siltstone and sandstone layers. Note ...
... chips are highlighted by white lines. (c) A polished rock slab showing the structures of siltstone and sandstone layers. (d) A thin-section viewed in non-polarized light showing the plant detritus above the parallel laminated siltstones. G eo lo g ia C ro a tica Radonjić Miloš: Hyperpycnites ...
... aforementioned level is divided into brown to light brown in sandstones and olive gray to gray in fine-grained levels. 3.3. Unit C (interval: ~ 15 to 25.25 m of the column) Unit C of the section begins above the 15 m mark of the column, from where there is a notable decrease in bed thickness, which on ...Miloš Radonjić. "Hyperpycnites within the Devonian-Carboniferous flysch of the Carpatho-Balkanides (Kostadinovica, eastern Serbia)" in Geologia Croatica, Croatian Geological Survey (2020). https://doi.org/10.4154/gc.2020.13
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Asbestos-Based Pottery from Corsica: The First Fiber-Reinforced Ceramic Matrix Composite
Asbestos-containing pottery shards collected in the northeast of Corsica (Cap Corse) and dating from the 19th century, or earlier, have been analyzed by SEM-EDS, XRPD, FTIR and Raman microspectroscopy. Blue (crocidolite) and white (chrysotile) asbestos fiber bundles are observed in cross-sections. Most of the asbestos is partly or totally dehydroxylated, and some transformation to forsterite is observed to occur, indicative of a firing above 800 C. Examination of freshly fractured pieces shows a nonbrittle fracture with fiber pull-out, consistent with ...... 2004, 46, 507–527. [CrossRef] Viti, C.; Giacobbe, C.; Galtieri, A.F. Quantitative determination of chrysotile in massive serpentinites using, DTA: Implications for asbestos determinations. Am. Mineral. 2011, 96, 1003—1011. [CrossRef] Groppo, C.; Rinaudo, C.; Cairo, S.; Gastaldi, D.; Compagnoni ...
... ŠA 5 E E e c ČI i _ [ P r K) J Cr Ni 3 0 5000 10000 Q0 1000 2000 Energy / eV Wavenumber / cm' Figure 7. Representative EDS (left) and Raman (right) spectra recorded on some spots of sample c (see Figure 1). Materials 2020, 13, 3597 9of18 a) Fj yrj 5 > | F c -1 [n] = š ...
... stretching; mode at ~3600—3700 cm~-! over 450 *C (de-hydroxylation) and then the formation of forsterite at a temperature over ~500 "C, with the characteristic doublet seen at ~820–-850 cm -1. Complete de-hydroxylation requires heating above ~700 *C. Comparison of the IR patterns in Figure 3 shows ...Philippe Colomban, Aleksandar Kremenović. "Asbestos-Based Pottery from Corsica: The First Fiber-Reinforced Ceramic Matrix Composite" in Materials, MDPI AG (2020). https://doi.org/10.3390/ma13163597
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Mogućnost korišćenјa toplotnih pumpi sa otpadnom toplotom iz postrojenјa za prečišćavanјe otpadnih voda kao toplotnim izvorom
U narednom periodu se planira izgradnja nekoliko desetina sistema za prečišćavanje otpadnih voda u većim gradovima u Srbiji. Iskustva iz postrojenja koja su trenutno u radu, pokazuju da bi prečišćena otpadna voda, s obzirom na protok i temperaturu, mogla da predstavlja značajan izvor obnovljive energije. U radu su prikazani primeri dobre prakse korišćenja ove energije u sistemima daljinskog grejanja u zemljama Evropske unije. Analiziran je rad postrojenja za prečišćavanje otpadnih voda u Šapcu i razmotrena je mogućnost njegovog korišćenja ...... daljinskog grejanja ima temperaturu vode u napojnom vodu 82°C. Temperatura povratne vode iz sistema daljinskog grejanja je oko 40°C. Minimalna temperatura otpadne vode iz postrojenja za prečišćavanje otpadne vode je 4°C, a maksimalna 18°C. Da bi se balansiralo oscilovanje u dnevnom protoku daljinskog ...
... potrebne toplotne energije u mreži i 33% ukupnog rashladnog opterećenja. Kanalizaciona otpadna voda temperature 10°C, koristi se za zagrevanje povratnog toka vode u SDG sa 50°C na 62°C (Slika 1). COP sistema iznosi 3,51. Slika 1. Shematski prikaz rada sistema u Helsinkiju Rad ovih postrojenja ...
... kanalizacionoj mreži je 6 °C. energija, ekonomija, ekologija, 2021, god. XXIII, br. 1 13 Mreža daljinskog grejanja je podeljena na 4 voda (Slika 2). Dva voda snabdevaju potrošače toplom vodom temperature 75°C (napojni vod). Temperatura vode u povratnom vodu je 50°C. Druga dva voda su sa t ...Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Boban Pavlović. "Mogućnost korišćenјa toplotnih pumpi sa otpadnom toplotom iz postrojenјa za prečišćavanјe otpadnih voda kao toplotnim izvorom" in Energija, Ekonomija, Ekologija, University Library in Kragujevac (2021). https://doi.org/10.46793/EEE21-1.11I
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A tool for identifying the criticality in the disordered systems with metastable dynamics
Svetislav Mijatović, Dragutin Jovković, Sanja Janićević, Stefan Graovac, Đorđe Spasojević. "A tool for identifying the criticality in the disordered systems with metastable dynamics" in Physica A: Statistical Mechanics and its Applications, Elsevier BV (2021). https://doi.org/10.1016/j.physa.2021.125883