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1242. Investigations of the Thermal Parameters of Hybrid Sol–Gel Coatings Using Nondestructive Photothermal TechniquesŁukasz Chrobak, Dorota Korte, Hanna Budasheva, Miroslaw Maliński, Peter Rodič, Ingrid Milošev, Sylwia Janta-Lipińska, 2022, izvirni znanstveni članek Ključne besede: hybrid sol–gel coatings, non-destructive testing, photothermal radiometry, photothermal beam deflection spectrometry, thermal diffusivity, thermal conductivity
Objavljeno v RUNG: 03.06.2022; Ogledov: 1568; Prenosov: 28
 Celotno besedilo (1,36 MB) |
1243. European Aerosol Phenomenology - 8: Harmonised Source Apportionment of Organic Aerosol using 22 Year-long ACSM/AMS DatasetsGang Chen, Francesco Canonaco, Anna Tobler, Griša Močnik, MaríaCruz Minguillón, André Prévôt, 2022, izvirni znanstveni članek Opis: Organic aerosol (OA) is a key component to total submicron particulate matter (PM1), and comprehensive knowledge of OA sources across Europe is crucial to mitigate PM1 levels. Europe has a well-established air quality research infrastructure from which yearlong datasets using 21 aerosol chemical speciation monitors (ACSMs) and 1 aerosol mass spectrometer (AMS) were gathered during 2013-2019. It includes 9 non-urban and 13 urban sites. This study developed a state-of-the-art source apportionment protocol to analyse long-term OA mass spectrum data by applying the most advanced source apportionment strategies (i.e., rolling PMF, ME-2, and bootstrap). This harmonised protocol was followed strictly for all 22 datasets, making the source apportionment results more comparable. In addition, it enables the quantifications of the most common OA components such as hydrocarbon-like OA (HOA), biomass burning OA (BBOA), cooking-like OA (COA), more oxidised-oxygenated OA (MO-OOA), and less oxidised-oxygenated OA (LO-OOA). Other components such as coal combustion OA (CCOA), solid fuel OA (SFOA: mainly mixture of coal and peat combustion), cigarette smoke OA (CSOA), sea salt (mostly inorganic but part of the OA mass spectrum), coffee OA, and ship industry OA could also be separated at a few specific sites. Oxygenated OA (OOA) components make up most of the submicron OA mass (average = 71.1%, range from 43.7 to 100%). Solid fuel combustion-related OA components (i.e., BBOA, CCOA, and SFOA) are still considerable with in total 16.0% yearly contribution to the OA, yet mainly during winter months (21.4%). Overall, this comprehensive protocol works effectively across all sites governed by different sources and generates robust and consistent source apportionment results. Our work presents a comprehensive overview of OA sources in Europe with a unique combination of high time resolution (30-240 minutes) and long-term data coverage (9-36 months), providing essential information to improve/validate air quality, health impact, and climate models.
Ključne besede: air pollution, source apportionment, organic aeroosl, black carbon
Objavljeno v RUNG: 03.06.2022; Ogledov: 1947; Prenosov: 12
Celotno besedilo (4,69 MB)
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1244. Unlearnig PiecePeter Purg, 2022, umetniško delo Opis: The performative intervention is articulated both through spoken
word as well as in physical (re)presentation of the body in situ.
Along the ELO 2022 programme we select and remix fragments in a way
that corresponds to the principles of Bertolt Brecht's " Lehrstücke,“ the so
called learning or teaching pieces that deconstruct and expose the
mechanisms of (power) relationships inherent to the
(media/art educational ) system in question.
The participants and audiences are invited to comment upon the
intervention, opening a space of (self)reflexive interaction among all the
involved people, and perhaps machines as well. The focus is on eLit /ELO
production and dissemination conditions as related to (if not limited by)
the presented aesthetics and mechanics, the narratives and poetics
exposed.
Provoking both rational and emotional perspectives of the ELO 2022
community, possibilities of (un)learning through acting, playing roles,
adopting postures etc. are explored, dissolving (or at least questioning) the
divide between authors and audiences, both invited (in Brechtian terms) to
acquire attitudes rather than to consume an entertainment.
The challenge at ELO 2022 would also consist of surpassing Brecht's
principles as e.g. derived by the Brasilian director Zé Celso and his Theatre
of Discovery, or Augusto Boal's Forum Theatre that abolished the division
between actors and audiences who were invited to actively intervene in the
discourse presented, a collective experiment and search for solutions to
social (and in this case aesthetical and poetical) issues at hand.
With no actor audience separation, the emphasis on performance shifts
upon the process, rather than the final product be it the artwork itself, or
theoretical discourse about and around it.
Ključne besede: unlearning, perfromance, participative, Brecht, e-literature
Objavljeno v RUNG: 03.06.2022; Ogledov: 1257; Prenosov: 0
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1247. Monitoring chemical processes on the atomic scale in catalysts by operando X-ray absorption spectrometryIztok Arčon, 2022, objavljeni povzetek znanstvenega prispevka na konferenci (vabljeno predavanje) Opis: X-ray absorption spectroscopy (XAS) is a powerful tool for characterisation of local structure and chemical state of selected elements in different new functional materials and biological or environmental samples. The rapid development of extremely bright synchrotron sources of X-ray and ultraviolet light in recent years has opened new possibilities for research of matter at the atomic or molecular level, indispensable in the development of new functional nanostructured materials with desired properties. The lecture will present the possibilities offered by X-ray absorption spectroscopy with synchrotron light for ex-situ and in-situ or operando characterization of various catalyst materials before, after and during their operation. With the operando XANES and EXAFS methods it is possible to track changes in the valence states and local structures of selected elements in various (photo)catalysts, during chemical reactions under controlled reaction conditions, thus gaining insight into the dynamic functional properties and reaction mechanisms of these materials. New synchrotron light sources also opened the possibility of combining X-ray absorption or emission spectroscopy and microscopy with a resolution of up to a few tens of nanometres, allowing micro-XAS analysis with high spatial resolution.
Ključne besede: XAS, operando XANES, EXAFS, catalysts
Objavljeno v RUNG: 01.06.2022; Ogledov: 1417; Prenosov: 0
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1248. Monitoring of chemical processes at the atomic level by X-ray absorption spectrometry using extremely bright synchrotron radiation sourcesIztok Arčon, predavanje na tuji univerzi Opis: X-ray absorption spectroscopy (XAS) is a powerful tool for characterisation of local structure and chemical state of selected elements in different new functional materials and biological or environmental samples. The XAS spectroscopy is based on extremely bright synchrotron radiation X-rays sources, which allow precise characterisation of bulk, nanostructured or highly diluted samples. The rapid development of extremely bright synchrotron sources of X-ray and ultraviolet light in recent years has opened new possibilities for research of matter at the atomic or molecular level, indispensable in the development of new functional nanostructured materials with desired properties. The lecture will present the possibilities offered by X-ray absorption spectroscopy with synchrotron light for ex-situ and in-situ or operando characterization of various functional porous and other nanomaterials before, after and during their operation.
Ključne besede: XAS, operando XANES, EXAFS, functional materials
Objavljeno v RUNG: 01.06.2022; Ogledov: 1368; Prenosov: 0
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1249. Red modernism : the films of Miklos Jansco2022, radijska ali televizijska oddaja, podkast, intervju, novinarska konferenca Opis: One of the most acclaimed Eastern European directors of the late 1960s, Miklos Jancsó became known for his abstract long-take style which explored the intersections of power, politics, history, and myth. (“Radical form in the service of radical content,” as the Village Voice film critic, James Hoberman, put it back then.) Now that the Beacon Cinema in Columbia City is hosting a retrospective of six of his films (including Red Psalm, which won him the best director prize at the 1972 Cannes Film Festival), Red May has invited three film scholars--Eszter Polonyi, Zoran Samardzija, and Steven Shaviro—to discuss Jancsó’s boldly stylized film language with Tommy Swenson, Film Curator of the Beacon Cinema
Ključne besede: Film history, East-Central cinemas, political cinema, art history
Objavljeno v RUNG: 31.05.2022; Ogledov: 1747; Prenosov: 8
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