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Abstract: The imaginaries of hospitality have been changing ever since people were moving places, migrating – meeting, welcoming and leaving each other. A famous Sanskrit verse equals guest to God. *** A musical album of reflections by: Heidrun Friese (Germany/Italy), Rim Trad (Lebanon), Eva Ann Wanjiku Chege (Kenya), Simay Abay (Turkey), Matias Olesi Pasulani (Malawi), Frida Stephany Yee Salas (Mexico), Negera Gudeta Adula (Ethiopia), Winnie Wothaya Murigu (Kenya). 01_othering (05:12) 02_visualising movement (02:51) 03_relating the other (04:25) 04_worlding hospitality (03:26) 05_creating mobility (03:07) 06_instrumentalizing (03:45) *** The project is a part of the 2023 POSTMOBILITY programme within www.go2025.eu. Special thanks to dr. Heidrun Friese, and to the abovenamed students of EMMIR, the European Master in Migration and Intercultural Relations www.emmir.org. *** Original music score and sound editing: Abiral Khadka (Joondroid) Artistic research and performative conception: pETER Purg
Keywords: mobility, migration, hospitality, imaginary, guest, god
Published in RUNG: 15.11.2023; Views: 651; Downloads: 25
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Abstract: Astrophysical neutral particles, such as neutrons, can point directly to their sources since they are not affected by magnetic fields. We expect neutron production in the immediate vicinity of the acceleration sites due to cosmic ray interactions. Hence, a high-energy neutron flux could help to identify sources of cosmic rays in the EeV range. Free neutrons, although unstable, can travel a mean distance of 9.2 kpc times their energy in EeV. Due to the neutron instability, we limit the searches to Galactic candidate sources. Since air showers initiated by a neutron are indistinguishable from those generated by a proton, we would recognize a neutron flux as an excess of events from the direction of its source. Previous searches using events with a zenith angle up to 60^◦ and energies above 1 EeV found no surplus of events that would indicate a neutron flux. We present the results of the search for evidence of high-energy neutron fluxes using a data set about three times larger than the previous work. We investigate the sky in the field of view of the Pierre Auger Observatory, narrowing down to specific directions of candidate sources. With respect to previous works, we extend the angular range up to zenith angles of 80^◦ , reaching declinations from −90^◦ to +45^◦ , and the energy range going as low as 0.1 EeV. The extension in the field of view provides exposure to the Crab Nebula for the first time.
Keywords: neutrons, cosmic ray, Pierre Auger Observatory, Crab Nebula, proton, high-energy neutron flux
Published in RUNG: 14.11.2023; Views: 618; Downloads: 5
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Keywords: catalytic application, thermal treatment
Published in RUNG: 14.11.2023; Views: 694; Downloads: 0
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Abstract: The basics of thermal lens spectrometry (TLS) and TLS microscopy (TLM) will be explained considering in particular the dependence of the thermal lens signal on the excitation power, thermo-optical properties of the sample, as well as sample flow and photostability of the analyte, with particular focus on the TLS enhancement factor, sensitivity and sample throughput of TLS and TLM measurements. Examples of applications will include most notable achievements of TLS and TLM measurements in liquid chromatography (detection of bilirubin and biliverdin in blood plasma, bilirubin in vascular endothelial cells), flow injection analysis (organophosphate insecticides and allergens in foodstuffs) and microfluidics (high throughput determination of Cr(VI), microcystin, HPV virus antibodies, and biomarkers of acute kidney injury). Before the concluding remarks, recent progress in multi-pass mode-mismatched TLS instrumentation and applications of incoherent light sources will be presented s part of the future outlook for TLS and TLM techniques.
Keywords: Spektrometrija TLS, TLM, chromatography, microfluidics, FIA
Published in RUNG: 14.11.2023; Views: 516; Downloads: 4
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Keywords: composites, catalysis
Published in RUNG: 13.11.2023; Views: 666; Downloads: 1
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