Претрага
491 items
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The number of unimodular roots of some reciprocal polynomials
Dragan Stankov (2020)We introduce a sequence P2n of monic reciprocal polynomials with integer coefficients having the central coefficients fixed. We prove that the ratio between number of nonunimodular roots of P2n and its degree d has a limit when d tends to infinity. We present an algorithm for calculation the limit and a numerical method for its approximation. If P2n is the sum of a fixed number of monomials we determine the central coefficients such that the ratio has the minimal limit. ...Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomialsDragan Stankov. "The number of unimodular roots of some reciprocal polynomials" in Cmptes rendus mathematique (2020). https://doi.org/10.5802/crmath.28
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Ostvarivanje dobiti pri uvođenju sistema agregatnih zamena na osnovnoj rudarskoj mehanizaciji površinskih kopova EPS
Jedan od osnovnih zadataka na površinskim kopovima uglja je ostvarivanje zadovoljavajućeg vremenskog i kapacitetnog iskorišćenja kontinualnih sistema. Da bi se to postiglo, neophodno je izvršiti izmene u postojećoj strategiji održavanja. Preduslov je uvođenje agregatne zamene vitalnih delova na rudarskim mašinama. Benefiti su višestruki. Očekivani rezultati ovakvog pristupa su: smanjenje zastoja i povećanje vremena rada; direktne materijalne uštede; bolja organizacija rada; racionalizaciju radioničkih i magacinskih kapaciteta; povećanje vrednosti mašina. Da bi se uvela agregatna zamena neophodne su investicije za nabavku ...Predrag Jovančić, Ignjatović Dragan, Đenadić Stevan. "Ostvarivanje dobiti pri uvođenju sistema agregatnih zamena na osnovnoj rudarskoj mehanizaciji površinskih kopova EPS" in X Međunarodna konferencija UGALJ, Zlatibor, Srbija, 13-16. Oktobar 2021., Jugoslovenski komitet za površinsku eksploataciju (2021)
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Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites
Marija Šuljagić, Aleksandar Kremenović, Ivan Petronijević, Adis Džunuzović, Miljana Mirković, Vladimir Pavlović, Ljubica Anđelković (2023)To investigate the effect of synthesis procedure and sintering temperature on the functional properties of perovskite/spinel ceramics, BaTiO3/CoFe2O4 composites were prepared by thermal decomposition, coprecipitation, and microemulsion method, and sintered at 1150°C and 1300°C. The phase composition and morphology of as-prepared powders as well as sintered ceramics were thoroughly examined by X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS). The dielectric and ferroelectric measurements were performed in detail. Generally, the ...Marija Šuljagić, Aleksandar Kremenović, Ivan Petronijević, Adis Džunuzović, Miljana Mirković, Vladimir Pavlović, Ljubica Anđelković. "Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites" in Science of Sintering (2023). https://doi.org/10.2298/SOS220512013S
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Simple 2D Gravity-density inversion for modeling of the sedimentary basin basement
Ivana Vasiljević, Snežana Ignjatović, Dragana Đurić,. "Simple 2D Gravity-density inversion for modeling of the sedimentary basin basement" in International scientific conference Challenges in Applied Geology and Geophysics: 100th Anniversary of Applied Geology at AGH University of Science and Technology, Book of abstracts, Kraków, Poland, 10-13. Sep. 2019, Kraków, Poland : AGH University of Science and Technology (2019)
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Clockwise vertical-axis rotation in the West Vardar zone of Serbia: Tectonic implications
The Vardar-Tethyan mega-suture between the Eurasian and Adria (Gondwana) margins comprises remnants of oceanic lithosphere of Neotethys and distal parts of the adjacent continental margins including unconformable Late Cretaceous sedimentary cover and Cenozoic igneous rocks of post-obduction age. This study provides kinematic constraints for displacements and rotations affecting the Serbian part of the West Vardar and Jadar-Kopaonik units after the closure of the Neotethyan (= Sava) Ocean. The targets of the paleomagnetic research were Late Cretaceous sediments representing an ...... , M., Klisić, M., Urošević, M., Trifunović, S., Radovanović, Z., et al. (1977). Basic Geological Map of SFRJ, sheet Čačak (scale 1:100 000). Beograd: Savezni Geološki Zavod. Brković, T., Radovanović, Z., & Pavlović, Z. (1979). Basic Geolog- ical Map of SFRJ, sheet Kragujevac (scale 1:100 ...
... Cvetković, V., & Pécskay, Z. (1999). The Early Miocene eruptive complex of Borač (central Serbia): Volcanic facies and evolution over time. Extended abstract. Carpathian Geology 2000, October 11–14, 1999, Smolenice. Geologica Carpathica, 50, 91–93. Cvetković, V., Pécskay, Z., & Šarić, K. (2013) ...
... 212, 151–166. Filipović, I., Pavlović, Z., Marković, B., Rodin, V., Marković, O., Gagić, N., et al. (1976). Basic Geological Map of SFRJ, sheet Gornji Milanovac (scale 1:100 000). Beograd: Savezni Geološki Zavod. Filipović, I., Rodin, V., Pavlović, Z., Marković, B., Milićević, M., & Atin ...Vesna Lesić, Emo Márton, Violeta Gajić, Dragana Jovanović, Vesna Cvetkov. "Clockwise vertical-axis rotation in the West Vardar zone of Serbia: Tectonic implications" in Swiss Journal of Geosciences, Basel : Springer International Publishing (2018). https://doi.org/10.1007/s00015-018-0321-8
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Agates of the Lece Volcanic Complex (Serbia): Mineralogical and Geochemical Characteristics
Agate veins and nodules occur in the Lece Volcanic Complex (Oligocene-Miocene) situated in the south of Serbia and occupying an area of 700 km2. This volcanic complex is composed predominantly of andesites, with sporadic occurrences of andesite-basalts, dacites and latites, and features agate formations that have been very little investigated. This study focuses on five selected agate occurrences within the Lece Volcanic Complex, employing optical microscopy, scanning electron microscopy (SEM), X-ray powder diffraction analysis, inductively coupled plasma mass spectrometry ...Zoran Miladinović, Vladimir Simić, Nenad Nikolić, Nataša Jović Orsini, Milena Rosić. "Agates of the Lece Volcanic Complex (Serbia): Mineralogical and Geochemical Characteristics" in Minerals, MDPI AG (2024). https://doi.org/10.3390/min14050511
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Using Lexical Resources for Irony and Sarcasm Classification
The paper presents a language dependent model for classification of statements into ironic and non-ironic. The model uses various language resources: morphological dictionaries, sentiment lexicon, lexicon of markers and a WordNet based ontology. This approach uses various features: antonymous pairs obtained using the reasoning rules over the Serbian WordNet ontology (R), antonymous pairs in which one member has positive sentiment polarity (PPR), polarity of positive sentiment words (PSP), ordered sequence of sentiment tags (OSA), Part-of-Speech tags of words (POS) ...... relations that participate in finding a broader set of synonyms and separated by the antonymy relation. from RDF triples (?a swn:irony ?z), where a is the first and z is the last member of the observed rule. According to [1], existence of irony in a text is characterized by markers. Those are literary ...
... the 50% threshold. The most common cause for false negative tweets was: the usage of letters without diacritics (s instead of š, c instead of č or ć, z instead of ž and d or dj instead of đ ), usage of transcribed words instead of words in the BCMS languages, e.g. hepi for happy, and the repetition of ...
... e-dictionaries (tagged with _not; step 2 in Fig 1). In the case of those words, if they contained one or more of the “critical” Latin script letters – c, s, z – or a combination of letters – dj – they were replaced with an appropriate letter of the Latin script, if that would lead to getting a word from the ...Miljana Mladenović, Cvetana Krstev, Jelena Mitrović, Ranka Stanković. "Using Lexical Resources for Irony and Sarcasm Classification" in Proceedings of the 8th Balkan Conference in Informatics (BCI '17), New York, NY, USA, : ACM (2017). https://doi.org/
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Еволуција напонског поља подручја Интерних Динарида у Србији током алпске орогенезе
Ana S. Mladenović (2015-06-19)Циљ ове докторске дисертације био је реконструкција еволуције напонског пољаЗемљине коре у подручју Интерних Динарида у Србији током Алпске орогенезе.Истраживања за потребе решавања овог проблема су изведена у два дела. Првидео обухватао је анализу палеонапона на дефинисаном подручју истраживања,док се други део односио на анализу тренутно активног поља напона у овом делуБалканског полуострва. Истраживано подручје обухвата унутрашњи деоДинарског орогеног појаса, који се простире у централној и западној Србији. Собзиром на циљ истраживања, истраживано подручје је дефинисано тако даобухвата три ...Интерни Динариди, анализа палеонапона, фокални механизмиземљотреса, напонско поље, тектоно-магматски догађаји... 5949 NDA транскурентни e Деформациона фаза D1: Транскурентни режим са И – З компресијом Ова група тензора садржи три сета раседа: леве транскурентне раседе пружања СЗ – ЈИ, десне транскурентне раседе пружања И – З до ИСИ – ЗЈЗ, реверсне раседе пружања ССИ – ЈЈЗ. У размери карте, током ове фазе ...
... структуру, тј. да сам басен има оријентацију СЗ – ЈИ, а налази се између раседа пружања И – З. У истом извештају се наводи и да се главни земљотрес од 3.11.2010. године, догодио управо по раседу пружања И – З. Вучковић и Перишић (2011) дали су приказ сеизмотектонске структуре зоне Краљева, на основу ...
... Poli G., Cvetković V., Christofides G., Krstić D., Pécskay Z. 2011. Petrogenetic and tectonic inferences from the study of the Mt Cer pluton (West Serbia). Geol. Mag. 148 (1): 89 – 111 Kounov A., Burg J-P., Bernoulli D., Seward D., Ivanov Z., Dimov D., Gerdjikov I. 2011. Paleostress analysis of ...Ana S. Mladenović. "Еволуција напонског поља подручја Интерних Динарида у Србији током алпске орогенезе" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-06-19)
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Еволуција напонског поља подручја Интерних Динарида у Србији током алпске орогенезе
Ana S. Mladenović (2015-06-19)Циљ ове докторске дисертације био је реконструкција еволуције напонског пољаЗемљине коре у подручју Интерних Динарида у Србији током Алпске орогенезе.Истраживања за потребе решавања овог проблема су изведена у два дела. Првидео обухватао је анализу палеонапона на дефинисаном подручју истраживања,док се други део односио на анализу тренутно активног поља напона у овом делуБалканског полуострва. Истраживано подручје обухвата унутрашњи деоДинарског орогеног појаса, који се простире у централној и западној Србији. Собзиром на циљ истраживања, истраживано подручје је дефинисано тако даобухвата три ...Интерни Динариди, анализа палеонапона, фокални механизмиземљотреса, напонско поље, тектоно-магматски догађаји... 5949 NDA транскурентни e Деформациона фаза D1: Транскурентни режим са И – З компресијом Ова група тензора садржи три сета раседа: леве транскурентне раседе пружања СЗ – ЈИ, десне транскурентне раседе пружања И – З до ИСИ – ЗЈЗ, реверсне раседе пружања ССИ – ЈЈЗ. У размери карте, током ове фазе ...
... структуру, тј. да сам басен има оријентацију СЗ – ЈИ, а налази се између раседа пружања И – З. У истом извештају се наводи и да се главни земљотрес од 3.11.2010. године, догодио управо по раседу пружања И – З. Вучковић и Перишић (2011) дали су приказ сеизмотектонске структуре зоне Краљева, на основу ...
... Poli G., Cvetković V., Christofides G., Krstić D., Pécskay Z. 2011. Petrogenetic and tectonic inferences from the study of the Mt Cer pluton (West Serbia). Geol. Mag. 148 (1): 89 – 111 Kounov A., Burg J-P., Bernoulli D., Seward D., Ivanov Z., Dimov D., Gerdjikov I. 2011. Paleostress analysis of ...Ana S. Mladenović. "Еволуција напонског поља подручја Интерних Динарида у Србији током алпске орогенезе" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-06-19)
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Size–strain line-broadening analysis of anatase/brookite (TiO<sub>2</sub>)-based nanocomposites with carbon (C): XRPD and Raman spectroscopic analysis
Aleksandar Kremenović, Mirjana Grujić-Brojčin, Nataša Tomić, Vladimir Lazović, Danica Bajuk-Bogdanović, Jugoslav Krstić, Maja Šćepanović (2022)A size-strain line-broadening analysis of the XRPD patterns and Raman spectra for two anatase/brookite (TiO2)-based nanocomposites with carbon (C) was carried out and the results compared with those of a similar sample free of carbon. The crystal structures and microstructures of anatase and brookite, as well as their relative abundance ratio, have been refined from XRPD data by the Rietveld method (the low amount of carbon is neglected). The XRPD size-strain analysis resulted in reliable structure and microstructure results ...Materials Chemistry, Metals and Alloys, Atomic and Molecular Physics, Optics, Electronic, Optical and Magnetic MaterialsAleksandar Kremenović, Mirjana Grujić-Brojčin, Nataša Tomić, Vladimir Lazović, Danica Bajuk-Bogdanović, Jugoslav Krstić, Maja Šćepanović. "Size–strain line-broadening analysis of anatase/brookite (TiO2)-based nanocomposites with carbon (C): XRPD and Raman spectroscopic analysis" in Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, International Union of Crystallography (IUCr) (2022). https://doi.org/10.1107/S2052520622001731
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Optimizacija dužine strele rotornih bagera u funkciji stabilnosti kosina i efektivnosti rada na površinskim kopovima lignita Srbije
Branko M. Petrović (2016-07-12)Rotorni bageri su mašine koje se u današnje vreme najviše primenjuju uprocesu masovne eksploatacije uglja zahvaljujući, pre svega, nizu tehničkoeksploatacionihprednosti u odnosu na druge vrste bagera. Raznovrsnirudarsko-tehnički zahtevi otkopavanja doprineli su razvoju nekoliko tipova ovihmašina, tako da svaki od njih ima svoje prednosti i nedostatke u odnosu nadrugi tip.Predmet istraživanja u disertaciji odnosi se na izbor optimalnekonstrukcije strele bagera i njene usaglašenosti sa uslovima radne sredine kojiće vladati na površinskim kopovima lignita Srbije, imajući u vidu složene usloveeksploatacije (velika ...površinski kop, parametri bloka, kapacitet, rotorni bager, strelabagera, geomehanika, stabilnost kosina, ekonomija... i zaključak. 5 PROGRAM ISTRAŽIVANJA I F A Z A S IS T E M S K A A N A LI Z A II F A Z A M O D E LI R A N JE III F A Z A O P T IM IZ A C IJ A Proces IzlazUlaz Analiza sistema ROTORNI BAGER Analiza sistema RADNA ...
... - Uticaj dužine strele bagera (𝐿𝑠) na dužinu bloka (Z) za bager C-700 Slika 8.10. - Uticaj dužine strele bagera (𝐿𝑠) na dužinu bloka (Z) za bager SchRs-630x25/6 0.00 5.00 10.00 15.00 20.00 25.00 10 11 12 13 14 15 16 Z (m ) visina etaže H (m) C 700 S L=30 m L=25 ...
... 02122232425 Z (m ) visina etaže H (m) SchRs 630 L=50 m L=45 m L=40 m L=35 m L=30 m 138 Slika 8.11. - Uticaj dužine strele bagera (𝐿𝑠) na dužinu bloka (Z) za bager SRs-2000x32/5 Slika 8.12. - Uticaj dužine strele bagera (𝐿𝑠) na dužinu bloka (Z) uporedno za ...Branko M. Petrović. "Optimizacija dužine strele rotornih bagera u funkciji stabilnosti kosina i efektivnosti rada na površinskim kopovima lignita Srbije" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-07-12)
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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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Quantitative analysis of syllable properties in Croatian, Serbian, Russian, and Ukrainian
Biljana Rujević, Marija Kaplar, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Jan Mačutek (2021)Biljana Rujević, Marija Kaplar, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Jan Mačutek. "Quantitative analysis of syllable properties in Croatian, Serbian, Russian, and Ukrainian" in Language and Text: Data, models, information and applications, John Benjamins Publishing Company (2021). https://doi.org/10.1075/cilt.356.04ruj
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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)... Fermentation Processes. InTech https:// doi.org/10.5772/64645. Stepniewska, Z., Pytlak, A., 2008. Methanotrophic activity of coalbed rocks from ‘Bogdanka’ coal mine (south-east Poland). Arch. Environ. Prot. 34, 183–191. Stepniewska, Z., Pytlak, A., Kuzniar, A., 2013. Methanotrophic activity in carboniferous ...
... research team. We appreciate all comments and suggestions expressed by the reviewers. References Alves Dias, P., Kanellopoulos, K., Medarac, H., Kapetaki, Z., Miranda-Barbosa, E., Shortall, R., Czako, V., Telsnig, T., Vazquez-Hernandez, C., Arántegui, L.R., Nijs, W., Aparicio, G., Trombetti, M., Mandras, G ...
... Industry of Serbia, 2020. Production of coal [WWWdoc- ument]. URL. http://www.eps.rs/eng/poslovanje-ugalj (accessed 3.22.21). Pytlak, A., Stepniewska, Z., Kuzniar, A., Szafranek-Nakonieczna, A., Wolinska, A., Banach, A., 2014. Potential for aerobic methane oxidation in carboniferous coal measures. Geomicrobiol ...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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Multihazard Exposure Assessment on the Valjevo City Road Network
Miloš Marjanović, Biljana Abolmasov, Svetozar Milenković, Uroš Đurić, Jelka Krušić, Mileva Samardžić Petrović (2019)Miloš Marjanović, Biljana Abolmasov, Svetozar Milenković, Uroš Đurić, Jelka Krušić, Mileva Samardžić Petrović. "Multihazard Exposure Assessment on the Valjevo City Road Network" in Spatial Modeling in GIS and R for Earth and Environmental Sciences, Elsevier Inc (2019). https://doi.org/10.1016/B978-0-12-815226-3.00031-4.
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Overcoming the Low Oral Bioavailability of Deuterated Pyrazoloquinolinone Ligand DK-I-60-3 by Nanonization: A Knowledge-Based Approach
Jelena R. Mitrović , Branka Divović-Matović, Daniel E. Knutson, Jelena B. Ðoković, Aleksandar Kremenović, Vladimir D. Dobričić, Danijela V. Randjelović, Ivana Pantelić, James M. Cook, Miroslav M. Savić, Snežana D. Savić (2021)Poor water solubility of new chemical entities is considered as one of the main obstacles in drug development, as it usually leads to low bioavailability after administration. To overcome these problems, the selection of the appropriate formulation technology needs to be based on the physicochemical properties of the drug and introduced in the early stages of drug research. One example of the new potential drug substance with poor solubility is DK-I-60-3, deuterated pyrazoloquinolinone, designed for the treatment of various neuropsychiatric ...... column tempera- ture was set to 35 ◦C. Detection and quantification of DK-I-60-3 and internal standard were performed in positive HESI mode (m/z = 328.10–282.05 and m/z = 349.00–303.85, respec- tively). 2.2.6. Statistical Analysis All measurements were performed in triplicate, and results were expressed ...
... likelihood of interparticle collisions [8]. Table 3. Particle size (z-ave), polydispersity index (PDI), and zeta potential (ZP) of nanocrystal dispersions after one hour of milling (mean ± SD, n = 3). Formulation Milling Media Volume (%, v/v) z-Ave (nm) PDI ZP (mV) 60 195.8 ± 1.7 0.238 ± 0.029 F1 40 236 ...
... are mandatory for new drug substances [2,9]. Table 4. Particle size (z-ave), polydispersity index (PDI), and zeta potential (ZP) of nanocrystal dispersions after one and three months of storage (mean ± SD, n = 3). Formulation z-Ave (nm) PDI ZP (mV) 1 Month 3 Months 1 Month 3 Months 1 Month 3 Months ...Jelena R. Mitrović , Branka Divović-Matović, Daniel E. Knutson, Jelena B. Ðoković, Aleksandar Kremenović, Vladimir D. Dobričić, Danijela V. Randjelović, Ivana Pantelić, James M. Cook, Miroslav M. Savić, Snežana D. Savić. "Overcoming the Low Oral Bioavailability of Deuterated Pyrazoloquinolinone Ligand DK-I-60-3 by Nanonization: A Knowledge-Based Approach" in Pharmaceutics, MDPI, Basel, Switzerland (2021). https://doi.org/10.3390/pharmaceutics13081188
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Polyhedral characteristics of the cosalite-type crystal structures
Sabina Kovač, Predrag Dabić, Aleksandar Kremenović, Aleksandar Pačevski, Ljiljana Karanović, Marko V. Rodić, Martina Tribus (2019)Sabina Kovač, Predrag Dabić, Aleksandar Kremenović, Aleksandar Pačevski, Ljiljana Karanović, Marko V. Rodić, Martina Tribus. "Polyhedral characteristics of the cosalite-type crystal structures" in The Canadian Mineralogist, Mineralogical Association of Canada (2019). https://doi.org/10.3749/canmin.1900017
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Palaeoflora of Kamenica (Pranjani Basin, western Serbia)
Palaeofloras of the Paleogene in Serbia are relatively rare, especially in comparison with floras from Neogene sediments. Most Paleogene phytoas sociations from the territory of Serbia existed in a dry and warm climate. The youngest Paleogene phytoassociation originates from the Pranjani Basin (Western Serbia), locality Kamenica. The age of this palaeoflora is determined as Late Oligocene. This fossil plant assemblage is different from other Paleo gene phytoassociations.The palaeoflora from Kamenica is characterized with leaf imprints larger than in other ...... anali Balkanskoga poluostrva, 80: 1–15. LaZarevIć, Z. 2008. Neogene flore Srbije [Neogene Floras of Serbia – in Serbian, with an english abstract]. un- publ.Phd Thesis, Faculty of Mining and Geology, uni- versity of Belgrade, 147pp. LaZarevIć, Z. & MILIvOjevIć, j. 2010. early Miocene flora of the ...
... intramontane Žagubica Basin (Serbian carpatho- Balkanides). Neues Jahrbruch für Geologie und Paläon- tologie, Abhandlungen, 256: 141–150. LaZarevIć, Z., MILIvOjevIć, j., BOGIćevIć, K. & NeNadIć, d. 2013. early Miocene flora from the valjevo-Mionica Basin (Western Serbia). Neues Jahrbruch für Geologie ...
... северозападном делу грабена. Има изглед плитког рова ограниченог раседима пружања СЗ–ЈИ и додатно је издељен на мање блокове системом раседа СИ–ЈЗ и И–З. То је депозициони простор слабог интензитета тоњења (MarOvIć et al., 2007). Биљни фосилни остаци су прикупљени са локалитета Каменичке реке у селу ...Zorica Lazarević, Ljubica Milovanović, Jelena Milivojević, Ivana Vasiljević . "Palaeoflora of Kamenica (Pranjani Basin, western Serbia)" in Geološki anali Balkanskog poluostrva, Beograd : Rudarsko-geološki fakultet (2019). https://doi.org/10.2298/GABP1902053L
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A new copper(II) arsenate, Na2Cu3(AsO3OH)4·4H2O containing discrete [Cu3O12]18− units: Synthesis, crystal structure and magnetic properties
Single crystals of the new disodium tricopper(II) tetrakis(hydrogenarsenate(V)) tetrahydrate, Na2Cu3(AsO3OH)4·4H2O were grown under hydrothermal conditions. The compound was characterized by room-temperature single-crystal X-ray diffraction, SEM-EDS analysis, Raman spectroscopy and magnetic susceptibility measurements. Na2Cu3(AsO3OH)4·4H2O represents a new layered structure-type [space group P21/c, a = 8.7089(17), b = 9.7452(19), c = 9.3353(19) Å, β = 92.63(3)°, V = 791.4(3) Å3, Z = 4]. The layers are normal to [100] and are composed of the isolated Cu3O12 units interconnected by AsO3OH coordination ...Na2Cu3(AsO3OH)4•4H2O, хидротермална синтеза, кристална структура, хидрирани хидрокси-арсенати, магнетна својстваTamara Đorđević, Ljiljana Karanović, Zvonko Jagličić. "A new copper(II) arsenate, Na2Cu3(AsO3OH)4·4H2O containing discrete [Cu3O12]18− units: Synthesis, crystal structure and magnetic properties" in Journal of Solid State Chemistry, Elsevier BV (2018). https://doi.org/10.1016/j.jssc.2018.05.024
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Hydrochemical changes and groundwater grouping data by multivariate statistical methods within one karst system: recharge–discharge zone (Eastern Serbia case study)
Ljiljana Vasić, Dragana Živojinović, Vladana Rajaković-Ognjanović. "Hydrochemical changes and groundwater grouping data by multivariate statistical methods within one karst system: recharge–discharge zone (Eastern Serbia case study)" in Carbonates and Evaporites, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s13146-019-00548-6