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32. STAGED CONCERT of the DIPLOMACY COLLECTIVEPeter Purg, Fabian Koppri, Francisco Catalán, Morris Kliphius, Stange Madlen, Véronique Ehrsam, 2019, artistic work Abstract: This site-specific one-time performance joined 7 musicians/performers, as well as the participating audience, in a joint experience of sound, space and music. It was devised as a premiere performance at the ART FESTIVAL, 29.-31-3-2019 in Berlin, Germany at the "Atelierhaus Australische Botschaft". Keywords: music, staged, concert, site-specific, percussion Published in RUNG: 02.04.2019; Views: 3162; Downloads: 19 Link to full text This document has many files! More... |
33. Electrochemical dissolution of iridium and iridium oxide particles in acidic media : transmission electron microscopy, electrochemical flow cell coupled to inductively coupled plasma mass spectrometry and X-ray absorption spectroscopy studyPrimož Jovanovič, Nejc Hodnik, Francisco Ruiz-Zepeda, Iztok Arčon, Barbara Jozinović, Milena Zorko, Marjan Bele, Martin Šala, Vid Simon Šelih, Samo B. Hočevar, Miran Gaberšček, 2017, original scientific article Abstract: Iridium based particles as the most promising proton exchange membrane electrolyser electrocatalysts were investigated
by transmission electron microscopy (TEM), and by coupling of electrochemical flow cell (EFC) with online inductively
coupled plasma mass spectrometer (ICP-MS). Additionally, a thin-film rotating disc electrode (RDE), an identical location transmission
and scanning electron microscopy (IL-TEM and IL-SEM) as well as an X-ray absorption spectroscopy (XAS) studies have
been performed. Extremely sensitive online time-and potential-resolved electrochemical dissolution profiles revealed that iridium
particles dissolved already well below oxygen evolution reaction (OER) potentials, presumably induced by iridium surface oxidation
and reduction processes, also referred to as transient dissolution. Overall, thermally prepared rutile type IrO2 particles (T-IrO2)
are substantially more stable and less active in comparison to as prepared metallic (A-Ir) and electrochemically pretreated (E-Ir)
analogues. Interestingly, under OER relevant conditions E-Ir particles exhibit superior stability and activity owing to the altered
corrosion mechanism where the formation of unstable Ir(>IV) species is hindered. Due to the enhanced and lasting OER performance,
electrochemically pre-oxidized E-Ir particles may be considered as the electrocatalyst of choice for an improved low temperature
electrochemical hydrogen production device, namely a proton exchange membrane electrolyser. Keywords: Iridium Oxide Par-ticles, Electrochemical Dissolution of Iridium, Ir L3-edge XANES Published in RUNG: 23.08.2017; Views: 3945; Downloads: 0 This document has many files! More... |
34. Lidar measurements of Bora wind effects on aerosol loadingMaruška Mole, Longlong Wang, Samo Stanič, Klemen Bergant, William Eichinger, Francisco Ocaña, Benedikt Strajnar, Primož Škraba, Marko Vučković, William Willis, 2017, original scientific article Abstract: The Vipava valley in Slovenia is well known for the appearance of strong, gusty North-East Bora winds, which occur as a result of air
flows over an adjacent orographic barrier. There are three revealing wind directions within the valley which were found to give rise to
specific types of atmospheric structures. These structures were investigated using a Mie scattering lidar operating at 1064 nm, which provided high temporal and spatial resolution backscatter data on aerosols, which were used as tracers for atmospheric flows. Wind
properties were monitored at the bottom of the valley and at the rim of the barrier using two ultrasonic anemometers. Twelve time periods between February and April 2015 were selected when lidar data was available. The periods were classified according to the wind speed and direction and investigated in terms of appearance of atmospheric structures. In two periods with strong or moderate Bora, periodic atmospheric structures in the lidar data were observed at heights above the mountain barrier and are believed to be Kelvin–Helmholtz waves, induced by wind shear. No temporal correlation was found between these structures and wind gusts at the ground level. The influence of the wind on the height of the planetary boundary layer was studied as well. In periods with low wind speeds, the vertical evolution of the planetary boundary layer was found to be governed
by solar radiation and clouds. In periods with strong or moderate Bora wind, convection within the planetary boundary layer was found to be much weaker due to strong turbulence close to the ground, which inhibited mixing through the entire layer. Keywords: Downslope wind
Lidar observations
Kelvin–Helmholtz waves
Bora Published in RUNG: 06.01.2017; Views: 5430; Downloads: 0 This document has many files! More... |
35. Ultrahigh energy neutrino follow-up of Gravitational Wave Event GW150914 with the Pierre Auger ObservatoryJaime Alvarez-Muňiz, Francisco Pedreira, Zlatka Zas, Pablo Pieroni, Marta Trini, Lili Yang, treatise, preliminary study, study Keywords: UHE neutrinos, SD detector, Gravitational Waves Published in RUNG: 29.11.2016; Views: 5393; Downloads: 0 This document has many files! More... |
36. Measurement of the average electromagnetic longitudinal shower profile at the Pierre Auger ObservatoryFrancisco Diogo, Andrej Filipčič, Gašper Kukec Mezek, Ahmed Saleh, Samo Stanič, Marta Trini, Darko Veberič, Serguei Vorobiov, Lili Yang, Danilo Zavrtanik, Marko Zavrtanik, 2015, published scientific conference contribution Abstract: In addition to the standard Xmax and energy, the longitudinal
profiles of extensive air showers contain some more interesting
information. For energies above 10[sup]17.8 eV, we present the
average profiles as a function of atmospheric depth measured
for the first time at the Pierre Auger Observatory. The profile
shapes for different energy ranges are all well reproduced by a
Gaisser-Hillas function within the range studied. A detailed
analysis of the systematic uncertainties is performed using
data and a full detector simulation, and the results are
compared with predictions of hadronic interaction models for different primaries. Keywords: Pierre Auger Observatory, extensive air showers, longitudinal shower profile, Gaisser-Hillas finction Published in RUNG: 03.03.2016; Views: 4271; Downloads: 188 Full text (684,20 KB) |
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38. Searches for Galactic neutron sources with the Pierre Auger ObservatoryFrancisco Salesa Greus, Andrej Filipčič, Thomas Paul, Samo Stanič, Darko Veberič, Danilo Zavrtanik, Marko Zavrtanik, 2013, published scientific conference contribution Keywords: Observatorij Pierre Auger, kozmični žarki, nevtron Published in RUNG: 15.10.2013; Views: 6043; Downloads: 22 Link to full text |