Претрага
313 items
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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)... the Eh value for KNN-W2 (510 mV) still lies in the range characteristic for oxic conditions (Fig. 2). Bearing inmind that sampleswere collected im- mediately after excavation and kept hermetically closed, the KNN-W2 lignite must have been exposed to in situ oxidative conditions prior to excavation. This ...
... from 5 active coal mines located in Central Europe. In Poland, thesewere theBełchatów, TurówandKonin opencast mines,which together are responsible for ca. 95% of the country's lignite production (Polish Geological Institute, 2020). In Serbia, sampling was performed in the Kolubara opencast mine which ...
... however, was not noted in the results presented here. Among the studied samples, the most mature were lignites from the Turów mine. Organic matter accumulated in this coal basin is subjected to considerable geothermal heating (Liber-Makowska, 2013) which results e.g., in higher (in comparison to other ...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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Минерагенија зеолитских туфова Србије
Vladan Kašić (2018-02-05)Лежишта наших зеолитских туфова (Златокоп, Игрош, Јабланица 1, Беочин, Топоница и Сланци) која су овде била предмет детаљних истраживања, просторно и генетски везана су за вулканске и вулканокластичне стене маринских средина сенонске и неогенске старости и језерске седименте неогене старости и настала су као продукт девитрификације вулканског стакла.Током лабораторијских испитивања при изради ове докторске дисертације, примењене су следеће аналитичке методе: оптичка испитивања петрографских препарата; рендгенска дифракција праха (XRD); скенирајућа електронска микроскопија (СЕМ метода); хемијска карактеризација зеолитских туфова у оквиру ...... Zeolites in Soils Environments, in Dixon J. B., Weed S. B. (Eds.) Minerals in Soil Environments, Soil Science Society of America, Medison, Wisconsim USA, 873-906. Miner J. R., (1984): Use of Natural Zeolites in the Treatment of Animal Wastes, Zeo- Agriculture, Use of Natural Zeolites in Agriculture ...
... праћена у условима “ин витро” и огледима “ин виво” на јагњадима која су добијала храну контаминирану зеараленоном (Stojšić et al., 2004). “Ин витро” резултати су показали да органски модификовани природни зеолит адсорбује зеараленон са индексом адсорпције 90 %, на pH 3 ,7 и 9. За “ин виво” експерименте ...
... occurrence of zeolites in sedimentary rocks in Yugoslavia, Geol Anali Balkanskog Poluostrva, XLI, Beograd, 293-302. Obradović J. (1988): Occurrences and genesis of sedimentary zeolites in Serbia, Yugoslavia, Occurrence, Properties and Utilization of Natural Zeolites., In D. Kallo and H. S. Sherry ...Vladan Kašić. "Минерагенија зеолитских туфова Србије" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2018-02-05)
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A Tool for Enhanced Search of Multilingual Digital Libraries of E-journals
This paper outlines the main features of Bibliša, a tool that offers various possibilities of enhancing queries submitted to large collections of TMX documents generated from aligned parallel articles residing in multilingual digital libraries of e-journals. The queries initiated by a simple or multiword keyword, in Serbian or English, can be expanded by Bibliša, both semantically and morphologically, using different supporting monolingual and multilingual resources, such as wordnets and electronic dictionaries. The tool operates within a complex system composed ...... the article in .pdf format (residing on the official site of the INFOtheca journal) as well as the entire aligned parallel text of the article in .html format. More powerful is the full-text search (Figure 5). The user initiates this search by submitting a keyword in English or in Serbian and ...
... (one or more sentences or segments) in one of the TMX document languages, where the text in the first TUV is usually in the source language, and the texts in the remaining TUVs are in one or more target languages. Although the order of languages is the same in each TU, there is a TUV attribute ...
... translator’s aid, which could be of assistance both in reviewing terminology used in context and in refining the multilingual resources used within the system. Keywords: multilingual digital libraries, query expansion, TMX 1. Motivation In this paper we outline the main features of Bibliša ...Ranka Stanković, Cvetana Krstev, Ivan Obradović, Aleksandra Trtovac, Miloš Utvić. "A Tool for Enhanced Search of Multilingual Digital Libraries of E-journals" in Proceedings of the 8th International Conference on Language Resources and Evaluation, LREC 2012, May 2012, Istanbul, Turkey, Istanbul, Turkey : European Language Resources Association (2012)
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The Usage of Various Lexical Resources and Tools to Improve the Performance of Web Search Engines
In this paper we present how resources and tools developed within the Human Language Technology Group at the University of Belgrade can be used for tuning queries before submitting them to a web search engine. We argue that the selection of words chosen for a query, which are of paramount importance for the quality of results obtained by the query, can be substantially improved by using various lexical resources, such as morphological dictionaries and wordnets. These dictionaries enable semantic ...LR web services, MultiWord Expressions & Collocations, Information Extraction, Information Retrieval... fact that the adjective form dinarsku is in the accusative case that is required by the preposition na. 7. In order to test our system we have used a log file of one of Serbian professional journals that deals with economic issues. The journal’s web site is supported by a search engine that ...
... do not have a corresponding entry in our e-dictionaries) do not inflect. It would yield correct examples in some cases (for instance, in šper ploče ‘plywood’ šper does not inflect and it is not in our e-dictionaries since it is not a valid Serbian word). In some other situations the prediction ...
... unrelated to the original keyword, thus making any stemmer useless. 3. In some cases the user may wish to perform a bilingual search in order to find documents on the chosen subject in two languages, e.g. English and Serbian. In the case of garlic the appropriate query should be composed of the ...Krstev Cvetana, Stanković Ranka, Vitas Duško, Obradović Ivan. "The Usage of Various Lexical Resources and Tools to Improve the Performance of Web Search Engines" in LREC 2008: Conference on Language Resources and Evaluation, Marrakesh, Morocco, May 2008, European Language Resources Association (ELRA) (2008)
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Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of “Podbracan”
... po- sition of starting point in traverse - Standard deviation of the start- ing grid bearing ( σ v = ± 8ʺ); as well as the errors occurring during measuring, i.e. during setting out of traverse points in form of errors in setting out direction angles and error in setting out lengths of traverse ...
... tra- verse point in the direction of x-axis; i E σ - standard deviation of tra- verse point in the direction of y-axis; 1i N σ − - standard deviation of the previous traverse point in the direction of x-axis; 1i E σ − - standard deviation of the previous traverse point in the direction ...
... of bauxite in the deposit of "Podbracan" 4.1. Mining method The applied mining method, named the sublevel caving excavation method in crosswise direction, was chosen based on the relevant mining- geological parameters, mining condi- tions and other technical-technological factors in�uencing 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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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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Surface functional groups and degree of carbonization of selected chars from different processes and feedstock
Marija Ilić, Franz-Hubert Haegel, Aleksandar Lolić, Zoran Nedić, Tomislav Tosti, Ivana Sredović Ignjatović, Andreas Linden, Nicolai D. Jablonowski, Heinrich Hartmann (2022)The knowledge ofthe structural and chemical properties of biochars is decisive for their application as technical products. For this reason, methods for the characterization of biochars that are generally applicable and allow quality control are highly desired. Several methods that have shown potential in other studies were used to investigate two activated carbons and seven biochars from different processes and feedstock. The chars were chosen to cover a wide range of chemical composition and structural properties as a hardness ...Biougalj, različiti procesi dobijanja, različite sirovine, površinski aktivne grupe, x-ray, FT-IR,XPS... based on field-scale experiments in lateritic red soil regions. Sci Total Environ. 2021; 761: 143252. https://doi.org/10.1016/j.scitotenv.2020.143252 PMID: 33183819 Jien SH, Kuo YL, Liao CS, Wu YT, Igalavithana AD, Tsang DCW et al. Effects of field scale in situ bio- char incorporation on soil ...
... https://doi.org/10.1016/j.carbon. 2019.09.018. Zhang Y, Feng DD, Zhao YJ, Dong HM, Chang GZ, Quan C, et al. Evolution of char structure during in-situ biomass tar reforming: Importance of the coupling effect among the physical-chemical structure of char-based catalysts. Catalysts. 2019; 9: 711. ...
... carbonates or sulfates, whereas phosphates would be counted correctly in Yox. Phosphorous content above 0.1% is also found in both gasification chars and in CS180h. In order to confirm the presence of soluble phosphorous in the original activated carbon AC2, the amount of phosphate from an eluate ...Marija Ilić, Franz-Hubert Haegel, Aleksandar Lolić, Zoran Nedić, Tomislav Tosti, Ivana Sredović Ignjatović, Andreas Linden, Nicolai D. Jablonowski, Heinrich Hartmann. "Surface functional groups and degree of carbonization of selected chars from different processes and feedstock" in PLOS ONE (2022). https://doi.org/10.1371/journal.pone.0277365
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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 ...... HcHMHTBaMba, TaKO Ja ce napaMerpu Je(opMaOmiHocTu, KojH cy norpeOHu 3a npopauyH cerabba, noOujajy Ha OCHOBy MeTOJa, OaaHpaHux Ha pe3ynraTuMa in-situ onHTa. HajnaxsHuju (akTopH 3a HpojeKTOBaĐbC ILIHTKHX TCMCJba Cy IIDpHMeM56HO orrepeheme, KpyTocT, iipuHa, nyOHHa H O0JIHK TeMeJba. IIpoMeHe HHBOa ...
... ynorpe0Ouru Ha cneJjehuH HauHH: c OT!O+AC Se = Hlo ( ) 4.1.3.2 c 1+e, 10 [_ ( ) __ k (a—m) (4.1.3.3) 1+eo dc - C – HHJIEKC KOMIIpecHJe eo - in-situ KoeQBnujeHT IIOpo3HOcCTH Ha OcHOBy OBE METOJĆ, yKyIHHO CJIerabbe Ta Ce MOOHJa Ha OCHOBy 3OMpa uH3pauyHaTux cJIeraPba 3a CBaKuH IojeJUHHauHH CJIOJ ...
... је на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs Yuunep3urer y Beorpajy PynapcKo-reomoniKu ...Милана Мичета. Утицај промене нивоа подземне воде за услове плитког фундирања у крупнозрном тлу, 2024
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Stratigraphy and Microfauna (Radiolarians and Foraminifera) of the Upper Cretaceous (Upper Santonian–Lower Campanian) Carbonate Deposits in the Area of Struganik Village, Western Serbia)
Santonian, Campanian, radiolarians, planktonic foraminifera, biostratigraphy, limestones, Struganik, SerbiaLiubov Bragina, Nikita Bragin, Luidmila Kopaevich, Nevenka Đerić, Nataša Gerzina Spajić. "Stratigraphy and Microfauna (Radiolarians and Foraminifera) of the Upper Cretaceous (Upper Santonian–Lower Campanian) Carbonate Deposits in the Area of Struganik Village, Western Serbia)" in Stratigraphy and Geological Correlation, Pleiades Publishing Ltd (2020). https://doi.org/10.1134/S0869593820010037
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Demise of the Wetterstein Carbonate Platform and onset of the Dachstein Carbonate Platform recorded in deep-water successions of the East Bosnian-Durmitor megaunit (Pliješevina, northern Montenegro, Dinarides)
Milica Mrdak, Eva Wagerer, Milan Sudar, Nevenka Djerić, Martin Đaković, Hans-Jürgen Gawlick. "Demise of the Wetterstein Carbonate Platform and onset of the Dachstein Carbonate Platform recorded in deep-water successions of the East Bosnian-Durmitor megaunit (Pliješevina, northern Montenegro, Dinarides)" in Geologica Carpathica, Central Library of the Slovak Academy of Sciences (2024). https://doi.org/10.31577/GeolCarp.2023.26
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Еоценска фауна југозападног дела Сирт басена (Либија)
Љупко Рундић, Мери Ганић (2020)Љупко Рундић, Мери Ганић. "Еоценска фауна југозападног дела Сирт басена (Либија)" in Записници Српског геолошког друштва, Српско геолошко друштво (2020)
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Hypogene speleogenesis related to porphyry magmatic intrusions and its influence on subsequent karst evolution in the Peruvian high Andes
Alexander Klimchouk, David Evans, Sasa Milanovic, Cristian Bittencourt, Mauro Sanchez, F. Carlos Aguirre (2022)Alexander Klimchouk, David Evans, Sasa Milanovic, Cristian Bittencourt, Mauro Sanchez, F. Carlos Aguirre. "Hypogene speleogenesis related to porphyry magmatic intrusions and its influence on subsequent karst evolution in the Peruvian high Andes" in Geomorphology, Elsevier BV (2022). https://doi.org/10.1016/j.geomorph.2022.108488
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Mineralogical analysis of a clay body from Zlakusa, Serbia, used in the manufacture of traditional pottery
... archaeological site near Mošnje (Slovenia). Applied Clay Science, 57, 39-48. LCPC (1987) Limites d'Atterberg, limite de liquiditć, limite de plasticite, method' deessai LPC, n*19. Paris, France, Publication LCPC, 26 pp. McManus J. (1988) Grain size distribution and interpretation. Pp. 63–85 in: Techniques ...
... samples are shown in . Kaolinite occurs as lamel- lar hexagonal flakes with broken edges, while montmorillonite particles mainly form larger crumbly aggregates and dense plates with undefined edges. Titanium minerals in the form of rutile needles (~20 um) are evident in the samples, in agreement with ...
... Bodenbeschaffenheit - Bestimmung der Partikelgr Jlenverteilung in Mineralb den. Beuth. Berlin, Germany, Deutsches Institut far Normung. Djordjević B. (2013) Pottery making in Zlakusa. First ethnoarchaeological research project in Serbia. P. 49 in: Conference Proceedings, Rome Italy, l3th-I4th May 2010 ...Maja Milošević, Biljana Đorđević, Mihovil Logar. "Mineralogical analysis of a clay body from Zlakusa, Serbia, used in the manufacture of traditional pottery" in Clay Minerals (2020). https://doi.org/10.1180/clm.2020.20
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Gate Road Support Deformation Forecasting Based on Multivariate Singular Spectrum Analysis and Fuzzy Time Series
Luka Crnogorac, Rade Tokalić, Zoran Gligorić, Aleksandar Milutinović, Suzana Lutovac, Aleksandar Ganić (2021)Underground mining engineers and planners in our country are faced with extremely difficult working conditions and a continuous shortage of money. Production disruptions are frequent and can sometimes last more than a week. During this time, gate road support is additionally exposed to rock stress and the result is its progressive deformation and the loss of functionality of gate roads. In such an environment, it is necessary to develop a low-cost methodology to maintain a gate road support system. ...deformacije podgrade, lasersko skeniranje, višekanalna singularna spektralna analiza, prognoza, klasterisanje fuzzy vremenskih serija... including duration time and costs of reparation with respect to forecasted deforma- tions. Future research will be focused on carrying an in situ measuring of the deformations in an underground mine to quantify the quality of the method. Furthermore, the focus will be on the making of a 3-D model of gate road ...
... much longer than is the case with the application of modern mechanized methods. In such a production environment, the maintenance of the gate road stability is almost impossible and is per- formed in an unsystematic way. In order to improve such a difficult situation, we use a laser scanner to obtain high ...
... much longer than is the case with the application of modern mechanized methods. In such a production environment, the maintenance of the gate road stability is almost impossible and is per- formed in an unsystematic way. In order to improve such a difficult situation, we use a laser scanner to obtain high ...Luka Crnogorac, Rade Tokalić, Zoran Gligorić, Aleksandar Milutinović, Suzana Lutovac, Aleksandar Ganić. "Gate Road Support Deformation Forecasting Based on Multivariate Singular Spectrum Analysis and Fuzzy Time Series" in Energies, MDPI (2021). https://doi.org/https://doi.org/10.3390/en14123710
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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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Hidrogeohemijska valorizacija esencijalnih mikroelemenata mineralnih voda Srbije
Jana S. Stojković (2013-09-25)Mineralne vode još od davnina privlače pažnju ljudi i to kako u pogledu istraživanja iproučavanja, tako i u pogledu njihovog iskorišćavanja. Naročito je važno poznavanjesadržaja mikroelemenata u njima, jer su to komponente njihovog hemijskog sastavakoje ih odvajaju od tzv. „običnih“ malomineralizovanih voda.U ovom radu proučavani su odabrani esencijalni mikroelementi (fluor, bor, litijum,kalijum, stroncijum i silicijum), u mineralnim vodama Srbije, pri čemu je analiziranopreko 130 uzoraka mineralnih voda iz različitih geoloških sredina, to jest hidrogeološkihrejona. Cilj ovog istraživanja bio je ...esencijalni mikroelementi, faktori migracije, zakonomernosti rasprostranjenja, hidrogeohemijski procesi, multivarijantna statistička analiza, mineralne vode Srbije... laboratorijskih analiza, tako i prilikom sistematizacije i obrade podataka. Na rezultate ispitivanja fizičko-hemijskih karakteristika mineralnih voda (in situ merenja na sirovim uzorcima, skraćene hemijske analize i određivanje sadržaja mikroelemenata) primenjena je multivarijantna statistička analiza ...
... cluster analysis and R-mode cluster analysis) has been applied on the research results of physical and chemical characteristics of mineral waters (in situ measurements on raw samples, short chemical analyses and analyses of the content of microelements) for better understanding of gathered information ...
... hidrohemiju Rudarsko-geološkog fakulteta u Beogradu. Uzorci su filtrirani na mestu uzorkovanja, a nestabilni fizičko-hemijski parametri mereni su in situ, na sirovim uzorcima. Potenciometrijskom metodom određivan je pH indeks, konduktometrijskom metodom – specifična elektroprovodljivost (µS/cm), a ...Jana S. Stojković. "Hidrogeohemijska valorizacija esencijalnih mikroelemenata mineralnih voda Srbije" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2013-09-25)
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Resource-based WordNet Augmentation and Enrichment
In this paper we present an approach to support production of synsets for SerbianWordNet(SerWN)byadjustingPrincetonWordNet(PWN)synsetsusing several bilingual English-Serbian resources. PWN synset definitions were automatically translated and post-edited, if needed, while candidate literals for Serbian synsets were obtained automatically from a list of translational equivalents compiled form bilingual resources. Preliminary results obtained from a setof1248selectedPWNsynsetsshowthattheproducedSerbiansynsetscontain 4024 literals, out of which 2278 were offered by the system we present in this paper, whereas experts added the remaining 1746. Approximately one half of ...... list of aligned en-sr terms from the web site of the Serbian Institute for Standardization. 3. Production The final parallel list of translation equivalents compiled from all of the abovementioned resources had 151,641 different en-sr term pairs, as summarized in Table 1. The first two columns show the ...
... given in LiteralsEn, LiteralsSr. In the column Mark the expert marks if the offered literal is acceptable. The next column Frek shows the frequency of the candidate pair in the final list of parallel terms, whereas the resources in which the term pair was found are displayed in column Sources. In general ...
... literals in the 20,221 aligned synsets of PWN and SerWN, and found out that 11,091 synsets (55%) had the same number of literals, that the number of literals in 6,107 synsets (30%) differed by 1, in 1,834 synsets (9%) by 2, in 682 for (3%) by 3 literals, whereas an even greater difference in the number ...Ranka Stanković, Miljana Mladenović, Ivan Obradović, Marko Vitas, Cvetana Krstev. "Resource-based WordNet Augmentation and Enrichment" in Proceedings of the Third International Conference Computational Linguistics in Bulgaria (CLIB 2018), May 27-29, 2018, Sofia, Bulgaria, Sofia : The Institute for Bulgarian Language Prof. Lyubomir Andreychin, Bulgarian Academy of Sciences (2018)
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A hundred years of Milutin Milanković's climate change theory - geological implications
Dejan Radivojević (2020)Миланковићева теорија циклуса објављена пре сто година је најважнија теорија у наукама које проучавају климу и имала је велики утицај на дисциплине које се баве Земљом. Ипак, његов рад је чекао више од педесет година да би добио потврду. Може се рећи да Миланковићев рад највећи утицај на геологију има у изради астрономске временске скале, подршци хипотези континенталног дрифта и палеоклиматологији. Добри резултати примене астрономске временске скале на неогене седименте иницирали су примену ове методе у мезозојским и у последње ...циклостратиграфија, астономска временска скала, геолошка временска скала, климатске промене, континентални дрифт... foraminiferal record across the initial Eocene Thermal Maximum, Southern ocean Site 690. GSA Spec. Paper, 369: 319–332. THoMAS, E. 2007. Cenozoic mass extinction in the deep sea; what disturbs the largest habitat on Earth? In: MoNECHI, S., CoCCIoNI, R. & RAMPINo, M. (Eds.). large Ecosystem Perturbations: ...
... Main periodicities are indicated in red. Fig. 3. Example of Milanković’s cycles at geological section in Punta di Maiata, Sicily (HilGEn et al., 2006). As an example, the recent research on the Trias- sic Chinle Formation in Petrified Forest National Park in Arizona confirms the existence of a ...
... as well-paid innovator. In 1909 he received an offer from the University of Belgrade to work as an Associate Professor at the Department of Applied Mathematics. He moved to Kingdom of Serbia in 1910 and became its citizen, even though his salary was ten times lower than in vienna. To gain additional ...Dejan Radivojević. "A hundred years of Milutin Milanković's climate change theory - geological implications" in Geološki anali Balkanskoga Poluostrva, Univerzitet u Beogradu, Rudarsko geološki fakultet (2020). https://doi.org/10.2298/GABP201125011R
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Crystallography and Surface Oxidation of Stoichiometric Arsenopyrite from Šumadija-Kopaonik Pb-Zn/Polymetallic Ore District (Serbia)
Ivana Jelić, Aleksandar Pačevski, Aleksandar Kremenović, Aleš Šoster, Andreja Šestan, Janez Zavašnik (2023)The behaviour and stability of arsenopyrite largely depend on its crystal structure, but studies of crystallography and structural defects are scarce. For clarification, we investigated a series of natural arsenopyrite crystals from the polymetallic Pb-Zn-(±Cu,Ag,Au,Sb,Bi,W) Šumadija-Kopaonik ore district (Serbia) by powder X-ray diffraction (XRPD). Among them, samples from the Drenjak gold mineralisation showed near-stoichiometric FeAsS composition and were further investigated by conventional and high-resolution transmission electron microscopy methods. TEM revealed abundant planar crystallographic defects and epitaxial surface oxide layer ...Inorganic Chemistry, Condensed Matter Physics,General Materials Science, General Chemical Engineering, crystal structure, FeAsS, oxidation, TEM, XRPD... the TEM sample preparation over the site-specific ocused ion beam (FIB) method to avoid possible Ga implantation during, the sample preparation procedure. The electron-transparent samples were mounted in a low-background dual tilt Be holder and analysed in the transmission electron microscope ...
... containing FeAsS were powdered in an agate mortar. Measurements were conducted on Smartlab X-ray Diffractometer (Rigaku Co., Tokyo, Japan) in 06–0 geometry (the sample in horizontal position) in parafocusing Bragg-Brentano geometry using a D/teX Ultra 250 strip detector in 1D standard mode with CuKau ...
... are summarised in Table 2. Using, calibration standards, we significantly improved the precision of SAED, and we obtained a good match to the values reported in the literature. The values summarised in Table 2 are also in good agreement with the measured XRPD data summarised in Table 1. Crystals ...Ivana Jelić, Aleksandar Pačevski, Aleksandar Kremenović, Aleš Šoster, Andreja Šestan, Janez Zavašnik. "Crystallography and Surface Oxidation of Stoichiometric Arsenopyrite from Šumadija-Kopaonik Pb-Zn/Polymetallic Ore District (Serbia)" in Crystals, MDPI AG (2023). https://doi.org/10.3390/cryst13020278
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Application of geophysical and multispectral imagery data for predictive mapping of a complex geo-tectonic unit: a case study of the East Vardar Ophiolite Zone, North-Macedonia
... mk similar data or the same datasets but in different domains to generate predictions for data-driven classification and regression problems (Cracknell and Reading 2014). In situ- ations involving the prediction of spatially dispersed catego- ries in extremely complex processes, these algorithms ...
... data into data sets for specific pur- poses in ML modelling (in this case displaying the different results with different class balances) and it is presented in the results section. Data sources A predictive map was generated for ophiolites in the study area by utilizing three distinct data ...
... The primary objective as to assess whether a reduction in the quantity of sampling data points, coupled with an increase in the proportion of ophiolites and non-ophiolites in the training dataset, would yield improved predictions in the testing dataset. It is worth noting that the testing ...Filip Arnaut, Dragana Đurić, Uroš Đurić, Mileva Samardžić-Petrović, Igor Peshevski. "Application of geophysical and multispectral imagery data for predictive mapping of a complex geo-tectonic unit: a case study of the East Vardar Ophiolite Zone, North-Macedonia" in Earth Science Informatics, Springer Science and Business Media LLC (2024). https://doi.org/10.1007/s12145-024-01243-4