Претрага
163 items
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Отпад из процеса сагоревања угља као сировина за добијање елемената ретких земаља
Бојан Земљак (2024)Због великог броја индустрија у којима се користе ови ресурси, глобална економија се у великој мери ослања на елементе ретких земаља. Елементи ретких земаља су есенцијална сировина — материјал за развој савремених технологија, али у односу на њихову огромну потражњу, њихово вађење је ограничено и повезано је са значајним утицајима на животну средину. Због њихове ограничене доступности, проблема који се јављају при процесима експлоатације, све више и више земаља почиње да тражи повољније могућности вађења елемената [REE] из секундарних ...... and Deng, Z.G., 2002. Extraction of rare carth metals by liquid surfactant membranes containing: Cyanex 272 as a carrier. Mining and Metallurgical Engineering(China), 22(3), p.74-78. [201] Raji, M., Abolghasemi, H., Safdari, J. and Kargari, A., 2018. Selective extraction of dysprosium from acidic ...
... Purification Technology, 320, p.124132. [204] Juang, R.S., Chen, J.D. and Huan, H.C., 2000. Dispersion-free membrane extraction: case studies of metal ion and organic acid extraction. Jowrma! of u Membrane Science, 165(1), p.59-73. [205] James, M., Cassidy, D., Goossens, D.J. and Withers, R.L., ...
... Lima, J.L. and Zagatto, E.A., 2009. Liquid-liquid extraction in flow analysis: A critical review. Analytica chimica acta, 652(1-2), p.54- 65. [219] Janssen, C.H., Macias-Ruvalcaba, N.A., Aguilar-Martinez, M. and Kobrak, M.N., 2015. Metal extraction to ionic liquids: the relationship between structure ...Бојан Земљак. Отпад из процеса сагоревања угља као сировина за добијање елемената ретких земаља, 2024
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Анализа одрона у стенским косинама: савремени приступи
Милош Марјановић (2023)У Србији и региону познате су бројне појаве одрона које су изазвале велике застоје саобраћаја, материјалне штете или чак имале фаталне исходе, па их је потребно непрестано пратити и изучавати. Mодeловањe одрона скопчано је са ниским нивоом поузданости, али савремене технологије омогућавају да сe такви изгледи донекле побољшају. Једна од технологија која чини искорак утом правцу јe LiDAR-ско скенирање, које обезбеђује детаљне топографске подлоге у виду облака тачака високе резолуције и тачности. Поступак анализе одрона може се свести на: ...Милош Марјановић. "Анализа одрона у стенским косинама: савремени приступи" in Записници Српског геолошког друштва, Београд : Српско геолошко друштво (2023)
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Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of “Podbracan”
... the progress of the project. 5. Mine surveying works Mining and surveying works are present at the pre-extraction and extrac- tion stage of the underground deposit mining project. Pre-extraction activity in view of mine surveying includes: - Analysis of the existing geometric base on the terrain ...
... of the stability; - Detailed scanning of the existing mine chambers. Figure 5 Parts of open pit benches in interaction with bench drifts The extraction activity in view of mine surveying includes: a priori accu- racy assessment of geometry elements for setting out the mine chambers designed ...
... and the setting and scanning of the as- built condition. 6. A priori accuracy assessment for setting out the mine chambers projected Within the extraction activities, and immediately before setting out the mine chambers projected, it is necessary to carry out the a priori accuracy assessment of the ...Aleksandar Milutinović, Aleksandar Ganić, Thamer Rayes Diyab, Rade Tokalić, Meri Ganić. "Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of “Podbracan”" in Revista Escola de Minas, School of Mines Magazine, Sao paulo, Brasil : SciELO (2015)
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Digital Library From A Domain Of Criminalistics As A Foundation For A Forensic Text Analysis
U ovom radu predstavljen je model koji omogućava prikupljanje, pripremu, opis metapodataka, upravljanje i eksploataciju, uključujući pretragu punog teksta dokumenata iz domena kriminalistike napisanih na srpskom jeziku. Predloženi pristup primenjuje se na veb portalu koji sakuplja različite tekstove nastale iz časopisa Akademije za kriminalistiku i policijske studije, Krivičnog zakona Srbije, konferencija „Tara“ i „Reiss“, kao i iz nekih doktorskih disertacija vezanih za ovu oblast istraživanje. Nakon obrade teksta, korpus koji sadrži preko 5500 stranica običnog teksta, kreiran je i ...... other (final process). Various methods for improvement of keyword based simple search is demonstrated on text prepared for text analysis and terminology extraction. Implementation details of Omeka, including add-in customisation, integration with Vebran, LeXimir and Unitex is discussed and presented ...
... lexical processing resources, describing text with metadata, analysis of unknown words, complement morphological dictionaries, addition to terminology database, transliteration, correction of broken words, correction of optical character recognition errors. Figure 2. Use case diagrams: ...
... morphological dictionary. Their addition will enhance the search performace and criminalistics text analysis. In this research, the analysis included extraction of multi-word units using LeXimir19 that system retrieved as most frequent: nasilje u porodici žurnal za kriminalistiku, izvršenje krivičnog ...Dalibor Vorkapić, Aleksandra Tomašević, Miljana Mladenović, Ranka Stanković, Nikola Vulović. "Digital Library From A Domain Of Criminalistics As A Foundation For A Forensic Text Analysis" in International Scientific Conference “Archibald Reiss Days” Thematic Conference Proceedings Of International Significance, Belgrade, 7-9 November 2017, Academy Of Criminalistic And Police Studies Belgrade (2017)
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Vebran Web Services for Corpus Query Expansion
Ranka Stanković, Miloš Utvić (2020)U ovom radu se govori o razvoju veb usluga Vebran i njihovoj primeni u poboljšanju pretraživanja korpusa. Veb-servisi Vebran koriste se za konsultovanje spoljnih leksičkih izvora za srpski jezik (uglavnom elektronski morfološki rečnici i srpski Vordnet) i proširivanje korisničkih upita radi dobijanja relevantnijih rezultata iz srpskih korpusa.... December 2019 101 Stanković R. and Utvić M., “Vebran Web Service . . . ”, pp. 99–118 Mining terminology is introduced in the system of Serbian Morphological Dictionaries (cf 3.1). In order to allow the extraction of specific concepts and relations between concepts by creating lexical masks, new semantic ...
... English equivalents of definitions are in the database). Externally developed Dictionary of library and information sciences10 encompasses the terminology of theory and practice of librarianship and in- formation sciences and a wide range of close or related fields, in Serbian, English and German languages ...
... et al., 2018). The RudKor corpus originated from ROmeka@RGF digital library to enable various lin- guistic and terminological research, including extraction of terms and other tasks in the field of knowledge engineering (Утвић et al., 2018). The RudKor contains 344 different texts with a total size of ...Ranka Stanković, Miloš Utvić. "Vebran Web Services for Corpus Query Expansion" in Infotheca, Faculty of Philology, University of Belgrade (2020). https://doi.org/10.18485/infotheca.2019.19.2.5
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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 ...... wikipedia.org/wiki/Potassium_dicyanoaurate (accessed on 12 July 2020). Corsica Gold Extraction. Available online: https://books.gooogle.fr/books?id"RQdHAQAATLTAAJ&pg=PA?211& Ipg\=PA211&dq=Corsica+gold+extraction&source=blI&ots=P-dxNx74tA&sig=ACfU3U1qpKUHSVka-7\ Q0MwdQcUc9F1xtAQ&hl=fr&sa=X&ved=2 ...
... which makes these ceramics the oldest fiber-reinforced ceramic matrix composite. Residues indicate the use of this pottery as a crucible for gold extraction using cyanide. Keywords: asbestos; CMC; Corsica; fiber; pottery 1. Introduction The fracture of a ceramic gives rise to a brittle edge, and ...
... that of KAg(CN)> (2141 cm-!) [47-49]. KAu(CN):> and KAg(CN) are so-called cyanidation compounds which have been used in gold- and silver-plating/extraction since the 19th century [50]. This would indicate that asbestos-based pottery pieces have also been used as crucibles due to their good resistance ...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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Serbian NER&Beyond: The Archaic and the Modern Intertwinned
U ovom radu predstavljamo srpski književni korpus koji se razvija pod okriljem COST Akcije „Distant Reading for European Literary History” CA16204. Koristeći ovaj korpus romana napisanih pre više od jednog veka, razvili smo i učinili javno dostupnim Sistem za prepoznavanje imenovanih entiteta (NER) obučen da prepozna 7 različitih tipova imenovanih entiteta, sa konvolucionom neuronskom mrežom (CNN), koja ima F1 rezultat od ≈91% na test skupu podataka. Ovaj model je dalje ocenjen na posebnom skupu podataka za evaluaciju. Završavamo poređenje ...... the results were much poorer (on average P = 57.8%, R = 37.7% and F1 = 45.7%). 2NER&Beyond, http://nerbeyond.jerteh.rs/ 3ACE (Automatic Content Extraction) 2005 Multi- lingual Training Corpus, https://catalog.ldc.upenn. edu/LDC2006T06 SHINRA2020-ML shared-task (Sekine et al., 2020) targeted the c ...
... some new NE types like “products”, “event”, “position”, etc. Dekker et al. (2019) experimented with diffe- rent off-the-shelf NER tools for the extraction of social network graphs from classic and mo- dern English fiction novels. The authors wan- ted to find out to what extent are these tools suitable ...
... al. (2020) created a corpus consisting of news articles in French, which ser- ved as a dataset for training and evaluation of a NER and a relation extraction algorithms using spaCy. Modrzejewski et al. (2020) incorporated NER trained in spaCy into an English/German Machine Translation system, with the ...Branislava Šandrih Todorović, Cvetana Krstev, Ranka Stanković, Milica Ikonić Nešić. "Serbian NER&Beyond: The Archaic and the Modern Intertwinned" in Proceedings of the Conference Recent Advances in Natural Language Processing - Deep Learning for Natural Language Processing Methods and Applications, INCOMA Ltd. Shoumen, BULGARIA (2021). https://doi.org/10.26615/978-954-452-072-4_141
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A Mathematical Learning Environment Based on Serbian Language Resources
In recent years, in line with ever growing usage of Information technology, the learning environments are changing. The amount of available learning materials in various forms has increased. These new environments demand comprehensive learning systems, which enable management of the learning corpus with special attention paid to relevant lexical resources. In this paper we present the concept of a Mathematical Learning Environment in Serbian (MLES), which is based on a corpus of mathematical materials and various lexical resources, enabling ...... language processing related tasks including query expansion, they need further improvement for management, named entity recognition, terminology extraction, and document indexing of mathematical content. In the next section we give and overview of the MLES system, followed by a section outlining ...
... of Belgrade [12] Krstev, C., Stanković, R, Obradović, I., Lazić, B., (2015). Terminology Acquisition and Description Using Lexical Resources and Local Grammars. Proceedings of the 11th Conference on Terminology and Artificial Intelligence, pp. 81-89. [13] Mladenović, M., Mitrović, M., Krstev ...
... used for semi-automatic extraction of MWEs on basis of lexical resources and local grammars developed for Serbian. Special attention is given to automatic inflectional class prediction for simple adjectives and nouns and the use of syntactic graphs for extraction of MWE candidates for termbases ...Radojičić Marija, Obradović Ivan, Stanković Ranka, Utvić Miloć, Kaplar Sebastijan. "A Mathematical Learning Environment Based on Serbian Language Resources" in Proceedings of the 7th International Scientific Conference Technics and Informatics in Education, Faculty of Technical Sciences, Čačak (2018)
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Пројекат ПРИЗМА: Карактеризација и технолошки поступци за рециклажу и поновну употребу флотацијске јаловине рудника „Рудник“
Владимир Симић, Стефан Петровић, Филип Арнаут, Весна Цветков, Милена Костовић, Драган Радуловић, Јовица Стојановић, Владимир Јовановић, Дејан Тодоровић, Нина Николић, Јелена Сенћански, Грозданка Богдановић, Драгана Мариловић (2024)Владимир Симић, Стефан Петровић, Филип Арнаут, Весна Цветков, Милена Костовић, Драган Радуловић, Јовица Стојановић, Владимир Јовановић, Дејан Тодоровић, Нина Николић, Јелена Сенћански, Грозданка Богдановић, Драгана Мариловић. "Пројекат ПРИЗМА: Карактеризација и технолошки поступци за рециклажу и поновну употребу флотацијске јаловине рудника „Рудник“" in Записници Српског геолошког друштва, Београд : Српско геолошко друштво (2024)
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Keyword-Based Search on Bilingual Digital Libraries
This paper outlines the main features of Biblisha, a tool that offers various possibilities of enhancing queries submitted to large collections of aligned parallel text residing in bilingual digital library. Biblishsa supports keyword queries as an intuitive way of specifying information needs. The keyword queries initiated, in Serbian or English, can be expanded, both semantically, morphologically and in other language, using different supporting monolingual and bilingual resources. Terminological and lexical resources are of various types, such as wordnets, electronic ...Ranka Stanković, Cvetana Krstev, Duško Vitas, Nikola Vulović, Olivera Kitanović. "Keyword-Based Search on Bilingual Digital Libraries" in Semantic Keyword-Based Search on Structured Data Sources - Second COST Action IC1302 International KEYSTONE Conference, IKC 2016, Springer (2017). https://doi.org/10.1007/978-3-319-53640-8_10
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An Approach to Efficient Processing of Multi-Word Units
Efficient processing of Multi-Word Units in the course of development of morphological MWU dictionaries is not easy to achieve, especially when languages with complex morphological structures are concerned, such as Serbian. Manual development of this type of dictionaries is a tedious and extremely slow process. To alleviate this problem we turned to our multipurpose software tool, dubbed LeXimir, in the production of lemmas for e-dictionaries of multi-word units. In addition to that, we developed a procedure aimed at making ...... fr/unitex/UnitexManual2.1.pdf (2011) 14. Przepiórkowski, A.: Slavonic information extraction and partial parsing. In: Proceedings of the Workshop on Balto-Slavonic Natural Language Processing: Information Extraction and En- abling Technologies, ACL ’07, pp. 1–10. Association for Computational Linguistics ...
... which are used outside this restricted domain, whereas the second set included 1,114 MWUs belonging to specific library and information science terminology. In addition to that, we used a smaller set of 152 MWU proper names, mostly geographic names and event names. As in the case of the first evaluation ...
... expand research to less-resourced languages, they are still presented to lesser degree. The second point is that it seems that the identification and extraction of MWUs has attracted more attention of researchers than their lexical representation. Various approaches to lexical representation of MWUs were ...Cvetana Krstev, Ivan Obradović, Ranka Stanković, Duško Vitas. "An Approach to Efficient Processing of Multi-Word Units" in Computational Linguistics - Applications, Studies in Computational Intelligence 458 no. 458, Berlin Heidelberg : Springer-Verlag (2013): 109-129. https://doi.org/10.1007/978-3-642-34399-5_6
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Увођење доменских и семантичких маркера за област рударства у српске електронске речнике
... Крстев и др. 2015: Cvetana Krstev, Ranka Stanković, Ivan Obradović, Biljana Lazić “Terminology Acquisition and Description Using Lexical Resources and Local Grammars”, In: Proc. of the 11th Conferenceon Terminology and Artificial Intelligence, Granada, Spain, eds. Thierry Poibeau and Pamela Fab- ...
... Станковић и др. 2016: Ranka Stanković, Cvetana Krstev, Ivan Obradović, Bil- jana Lazić, AleksandraTrtovac, “Rule-based Automatic Multi-word Term Extraction and Lemmatization”, In: Proc. of the 10th International Confer- ence on Language Resources and Evaluation, LREC 2016, Portorož, Slov- enia, pp ...
... critical to the quality of there sponse. This paper discusses the importance of lexical mark- ers in the processes of information retrieval and extraction, and proposesanexpansion of the set of the semarkers for the field of mining. A brief description of the developed corpus of texts from the field ...Иван Обрадовић, Александра Томашевић, Ранка Станковић, Биљана Лазић. "Увођење доменских и семантичких маркера за област рударства у српске електронске речнике" in Научни састанак слависта у Вукове дане - Српски језик и његови ресурси: теорија, опис и примене, Београд : Међународни славистички центар на Филолошком факултету, Филолошки факултет (2017). https://doi.org/10.18485/msc.2017.46.3.ch10
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Legal framework for recultivation of degraded areas caused by mining exploitation
Radmila Gaćina (2023)Prilikom površinske i podzemne eksploatacije uglja eksploatacioni sistemi oštećuju veće ili manje površine zemljišta. Iskustva pokazuju da su oštećenja zemljišta znatno veća kod površinske eksploatacije, gde je prostora degradiran ne samo u konturi rudnika i okoline, već se promene takođe dešavaju u prirodnom okruženju. U članku su predstavljeni rezultati studije zakonskih okvira rekultivacije u nekim zemljama sveta i u Srbiji. Praktično iskustvo rekultivacije pokazalo je da iskorišćenje i devastacija tokom rudarske aktivnosti predstavljaju opasnost ne samo za pogođena ...... activities do not end with the extraction of mineral resources. Rehabilitation represents an integral part of mining activity and mines operators are required under law to rehabilitate excavated sites. The surface affected mining must be rehabilitated as soon as the extraction work permits. Recultivation ...Radmila Gaćina. "Legal framework for recultivation of degraded areas caused by mining exploitation" in Underground mining engineering, Belgrade : University of Belgrade - Faculty of Mining and Geology (2023). https://doi.org/10.5937/podrad2342027G
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Concepts for Improving Machine Learning Based Landslide Assessment
Miloš Marjanović, Mileva Samardžić Petrović, Biljana Abolmasov, Uroš Đurić. "Concepts for Improving Machine Learning Based Landslide Assessment" in Natural Hazards GIS-based Spatial Modeling Using Data Mining Techniques, Advances in Natural and Technological Hazards Research, volume 48, Springer Nature Switzerland AG 2019 (2019). https://doi.org/10.1007/978-3-319-73383-8_2
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Hydrochemical features and their controlling factors in the Kucaj-Beljanica Massif, Serbia
Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeFen Huang, Ljiljana Vasic, Xia Wu, Jianhua Cao, Saša Milanovic. "Hydrochemical features and their controlling factors in the Kucaj-Beljanica Massif, Serbia" in Environmental Earth Sciences, Springer Science and Business Media LLC (2019). https://doi.org/10.1007/s12665-019-8452-4
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A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)
... World War II, it has produced more than 580,000,000 tons of coal. Every other kilowatt in Serbia comes from KCB’s lignite (brown coal). A daily extraction rate of as much as 100,000 tons of coal ensures reliable operation of the thermal power plants Nikola Tesla and Veliki Crljeni. KCB has been ...
... recharge and discharge in the form of model inflow and outflow. Given that there is a groundwater control system in place, the rate of groundwater extraction is greater than the rate of aquifer recharge (422.78 l/s vs 452.15 l/s). Analysis of the boundary conditions of the hydrogeologic system included ...Jelena Ratković, Dušan Polomčić, Dragoljub Bajić, Bojan Hajdin. "A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)" in Underground Mining Engineering no. 29, Belgrade : University of Belgrade - Faculty of mining and geology (2016): 43-54
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Development of Open Educational Resources (OER) for Natural Language Processing
In this paper we present the development of an online course at the edX BAEKTEL platform named “Lexical Recognition in the Natural Language Processing (NLP)”. It is based on the course of the same name for PhD studies at the University of Belgrade, Faculty of Philology. There are not many courses in Computational Linguistics (CL) on OER platforms, and there is none in Serbian either for CL or NLP. We have developed this course in order to improve this ...... included in these courses are syntax and parsing, language modelling and word sense disambiguation, part of speech tagging and information extraction, question answering, text summarization, collocations and information retrieval, sentiment analysis and semantics, discourse, machine translation ...
... 2015: Bary, Italy. p. 1801-1812. [2] Jackson, P. and I. Moulinier, Natural Language Processing for Online Applications: Text Retrieval, Extraction and Categorization. 2002: John Benjamins Publishing Co. [3] Schubert, L., Computational Linguistics, in The Stanford Encyclopedia of Philosophy ...Cvetana Krstev, Biljana Lazić, Ranka Stanković, Giovanni Schiuma, Miladin Kotorčević. "Development of Open Educational Resources (OER) for Natural Language Processing" in The Sixth International Conference on e-Learning (eLearning-2015), September 2015, Belgrade, Serbia, Belgrade : Belgrade Metropolitan Univesity (2015)
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Towards translation of educational resources using GIZA++
... that do not match 100 %, the search functions of CAT tools can find them through special "fuzzy search" features. CAT tool has support for terminology look-up, display and insertion of the search results into the text being translated. 4. ENVIRONMENT FOR TEXT ALIGNMENT Preliminary phase for ...
... edX.blm.en Finally, we came to the main event - training the translation model. To do this, we ran word-alignment (using GIZA++), phrase extraction and scoring, created lexicalised reordering tables and Moses configuration file, all with a single command. Before starting the command, we created ...
... but they describe the system for efficiently searching large parallel corpora with a powerful query language [18]. In [19] another approach for extraction of semantically related word pairs, ideally translational equivalents, is presented, from aligned texts in SELFEH, a Serbian- English corpus of ...Ivan Obradović, Dalibor Vorkapić, Ranka Stanković, Nikola Vulović, Miladin Kotorčević. "Towards translation of educational resources using GIZA++" in The Seventh International Conference on e-Learning (eLearning-2016), September 2016, Belgrade : Metropolitan Univesity (2016)
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Overwiew of In-Pit Crushing & Conveying Technology in Open Pit Mines
The conditions under which contemporary surface mining operations is carried out obviously becoming increasingly complex. In such complex conditions, the optimization of haulage systems as the technological phase with the largest share in the total operating costs, is very important from the aspect of achieving profitability of the mining project. In a large number of cases, the application of traditional haulage systems with trucks (as the most dominant type of haulage in open pit mines) does not lead to ...Ali Nasirinezhad, Dejan Stevanović, Dragan Ignjatović, Petar Marković. "Overwiew of In-Pit Crushing & Conveying Technology in Open Pit Mines" in 8th International Conference MIining And Environmental Protection, Sokobanja, 22-25 September 2021, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia (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)... Konstantynów 1 I, 20-708 Lublin, Poland H I G H L I G H T S • The GWP of the gases released by xylitic lignite was the lowest among the sam- ples. • Extraction of the detritic lignite may re- duce GHG emissions from the aban- doned mines. • Detritic lignites show the potential to serve as a source of ...
... methane production. The overall global warming potential (GWP) of the gases released by xylitic lignite was lowest among the samples. Preferen- tial extraction of the detritic lignites is suggested as ameans to reduce GHG emissions from the abandoned lignite mines. © 2018 The Authors. Published by Elsevier ...
... g., Poland 33-35%; Nyga-Lukaszewska et al., 2020). Impor- tantly, nearly half of all lignite is mined and utilized in Europe (Knoema, 2020). The extraction and combustion of coal pollutes water, soil, and espe- cially the atmosphere. Air pollution generated by the mining industry has both a local (p ...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