1. Messages from another borderless zone : exhibition of four young Ukrainian artists2025, exhibition Abstract: From 7 to 28 February 2025, Xcenter presented an exhibition of four young Ukrainian artists: Stefania Bodnia (& Jack Dove), Margo Sarkisova, Alex Sirous and Maria Matiashova.
The exhibition presents a condensed setup of four different Ukrainian artistic positions, meeting in a compelling yet poetical critique of militarization, imperialism, and the moral and ecological ruptures of our time, expressed through different languages of contemporary art. Curated by Peter Purg, the exhibition is part of GO! 2025 official programme.
Keywords: Ukraine, contemporary art, young
Published in RUNG: 20.02.2025; Views: 614; Downloads: 2
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2. Potential of the Cherenkov Telescope Array for studying the young nearby supernova remnantsDmitry A. Prokhorov, Saptashwa Bhattacharyya, Judit Pérez Romero, Samo Stanič, Veronika Vodeb, Serguei Vorobiov, Danilo Zavrtanik, Marko Zavrtanik, Miha Živec, 2023, published scientific conference contribution Abstract: Modern imaging atmospheric Cherenkov telescopes have extensively observed young nearby su-pernova remnants (SNRs), with ages of about 1000 years or less, in the very-high-energy (VHE) gamma-ray band. These efforts resulted in the detection of VHE emission from three young SNRs – Cassiopeia A, Tycho, and SN 1006 – and provided significant evidence for emission from the more distant Kepler’s SNR. However, many questions on the production of VHE gamma rays in these remnants remain unanswered. Using detailed physical models for Tycho’s SNR based on the CR-hydro-NEI code and physically motivated models for the other young nearby remnants, we simulated observations with the Cherenkov Telescope Array (CTA) of these gamma-ray sources. We highlight properties of these remnants accessible for investigation with future CTA observa-tions and discuss which questions are expected to be answered.
Keywords: Cherenkov Telescope Array, CTA, supernova remnants, young nearby supernova
Published in RUNG: 26.09.2023; Views: 2086; Downloads: 9
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3. Tina Skorjanc | Lindau Nobel Laureate Meetings | Young ScientistsTina Škorjanc, radio or television broadcast, podcast, interview, press conference Abstract: Tina Skorjanc es parte del grupo de Young Scientists que asistieron a Lindau Nobel Laureate Meetings 2022. Ella estudió Química y Biología, y actualmente está trabajando en síntesis de nuevos marcos y polímeros orgánicos covalentes, su caracterización y utilización como materiales sensores, o en diversas aplicaciones medioambientales (eliminación de contaminantes, conversión de CO2).
Keywords: Lindau Nobel Laureate Meeting, Lindau, Nobel Prize, young scientists, cienciasi
Published in RUNG: 11.08.2023; Views: 1873; Downloads: 11
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4. Novel composite films based on cellulose reinforced with chitosan and polyvinyl alcohol: Effect on mechanical properties and water vapour permeabilityPatricia Cazón, Manuel Vazquez, Gonzalo Velazquez, 2018, original scientific article Abstract: Novel composite films were prepared by dissolving microcrystalline cellulose (3–5% w/w) in NaOH/urea solution, followed by coagulation in acetic acid solution. The regenerated cellulose films were immersed in chitosan-polyvinyl alcohol solutions at concentrations of 0–1% w/w and 0–4% w/w, respectively. Tensile strength, percentage of elongation at break, Young's modulus and water vapour permeability were measured to assess the effect of each compound on the mechanical and barrier properties. Polynomial models were obtained to evaluate the effect of the formulation on the measured properties. The microstructure was analysed by scanning electron microscopy. Results showed tensile strength values in the range 27.75–78.48 MPa, similar to usual synthetic polymer films. Percentage of elongation at break ranged from 0.98 to 12.82%, increasing when polyvinyl alcohol and chitosan increased. Young's modulus ranged from 2727.04 to 4217.25 MPa, showing higher values than pure chitosan and polyvinyl alcohol films. The highest value was reached combining cellulose and polyvinyl alcohol without chitosan. The water vapour permeability (1.78·10−11-4.24·10−11 g/m s Pa) showed 2 orders of magnitude higher than that of synthetic polymers, but lower than pure chitosan and polyvinyl alcohol films. Results showed that it is feasible to obtain cellulose-chitosan-polyvinyl alcohol composite films with improved mechanical properties and water vapour permeability.
Keywords: Regenerated cellulose, Tensile strength, Elongation at break, Young's modulus, Water vapour permeability
Published in RUNG: 14.12.2020; Views: 3763; Downloads: 0
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5. Characterization of mechanical and barrier properties of bacterial cellulose, glycerol and polyvinyl alcohol (PVOH) composite films with eco-friendly UV-protective propertiesPatricia Cazón, Gonzalo Velazquez, Manuel Vazquez, 2020, original scientific article Abstract: Highly flexible composite films based on bacterial cellulose, glycerol and polyvinyl alcohol (PVOH) with UV barrier properties were developed. The open nanoscale network of bacterial cellulose allowed to combine it with glycerol and polyvinyl alcohol by immersion. This procedure kept intact the bacterial cellulose structure. The interactions among bacterial cellulose, glycerol and PVOH were analyzed using scanning electron microscopy, infrared spectroscopy, thermogravimetry and differential scanning calorimetry. In general, the addition of PVOH reinforced the bacterial cellulose matrix, meanwhile glycerol showed a significant plasticizing effect. Formulations with PVOH and glycerol reached a maximum value of 49.89% of elongation and a good resistance to rupture of 13.78 MPa. The water vapour permeability ranged from 1.87·10−11 to 2.04·10−10 g/m s Pa. The UV-VIS spectral analysis showed that glycerol decreased the transmittance in the UV area and polyvinyl alcohol enhanced the transparency values of the samples in the VIS region. The transmittance in the UV-A, UV-B and UV- C areas for films based on bacterial cellulose with glycerol reached up to 5.59, 2.4 and 0.57%, respectively.
Keywords: Acetobacter xylinum, Tensile strength, Percentage of elongation at break, Young's modulus, Eco-friendly film
Published in RUNG: 14.12.2020; Views: 3509; Downloads: 0
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