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4902. Fast-Response Photonic Device Based on Organic-Crystal Heterojunctions Assembled into a Vertical-Yet-Open Asymmetric ArchitectureLei Zhang, Egon Pavlica, Zhong, Xiaolan, Liscio Fabiola, LI Songlin, Gvido Bratina, Orgiu Emanuele, Samori Paolo, 2017, original scientific article Keywords: organski polprevodniki, merjenja časa preleta, organski fotodetektorji Published in RUNG: 24.01.2017; Views: 4249; Downloads: 0 This document has many files! More... |
4903. Thermal and elastic characterization of glassy carbon thin films by photoacoustic measurementsDragan D. Markushev, J. Ordonez-Miranda, Mihajlo Rabasović, M. Chirtoc, D. M. Todorovic, S. E. Bialkowski, Dorota Korte, Mladen Franko, 2017, original scientific article Keywords: Thermal and elastic characterization, glassy
carbon, thin films, photoacoustic measurements Published in RUNG: 23.01.2017; Views: 4434; Downloads: 0 This document has many files! More... |
4904. Življenje in delo Simona Gregorčiča : Govor na otvoritvi razstave o Simonu GregorčičuZoran Božič, other performed works Abstract: Gregorčič kot osmošolec (sonet Karlu Lavriču), Charles Nodier in Jean Sbogar in Aleksander S. Puškin in Soči, zlata knjiga 1882 in Josip Gruden pl. Slavinski, Anton Mahnič in Prešeren in Gregorčič, Gregorčičev pogreb in soimenjak z Libušnjega, Andrej Medved in Poezije SG in Mohorjeva družba, Jožko Bajt Triglav in Simon Gregorčič (Damir Feigel in France Bevk v času fašizma). Keywords: Simon Gregorčič, klasična poezija, domoljubje, slovenski narod, Andrej Kragelj, Anton Mahnič, France Prešeren Published in RUNG: 23.01.2017; Views: 4318; Downloads: 0 This document has many files! More... |
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4907. The scaffold protein calcium/calmodulin-dependent serine protein kinase controls ATP release in sensory ganglia upon P2X3 receptor activation and is part of an ATP keeper complex.Tanja Bele, Elsa Fabbretti, 2016, original scientific article Abstract: P2X3 receptors, gated by extracellular ATP, are expressed by sensory neurons and are involved in peripheral nociception and pain sensitization. The ability of P2X3 receptors to transduce extracellular stimuli into neuronal signals critically depends on the dynamic molecular partnership with the calcium/calmodulin-dependent serine protein kinase (CASK). The present work used trigeminal sensory neurons to study the impact that activation of P2X3 receptors (evoked by the agonist α,β-meATP) has on the release of endogenous ATP and how CASK modulates this phenomenon. P2X3 receptor function was followed by ATP efflux via Pannexin1 (Panx1) hemichannels, a mechanism that was blocked by the P2X3 receptor antagonist A-317491, and by P2X3 silencing. ATP efflux was enhanced by nerve growth factor, a treatment known to potentiate P2X3 receptor function. Basal ATP efflux was not controlled by CASK, and carbenoxolone or Pannexin silencing reduced ATP release upon P2X3 receptor function. CASK-controlled ATP efflux followed P2X3 receptor activity, but not depolarization-evoked ATP release. Molecular biology experiments showed that CASK was essential for the transactivation of Panx1 upon P2X3 receptor activation. These data suggest that P2X3 receptor function controls a new type of feed-forward purinergic signaling on surrounding cells, with consequences at peripheral and spinal cord level. Thus, P2X3 receptor-mediated ATP efflux may be considered for the future development of pharmacological strategies aimed at containing neuronal sensitization. P2X3 receptors are involved in sensory transduction and associate to CASK. We have studied in primary sensory neurons the molecular mechanisms downstream P2X3 receptor activation, namely ATP release and partnership with CASK or Panx1. Our data suggest that CASK and P2X3 receptors are part of an ATP keeper complex, with important feed-forward consequences at peripheral and central level. Keywords: DRG, hemichannels, pain, purinergic signaling, sensory neurons Published in RUNG: 19.01.2017; Views: 4298; Downloads: 0 This document has many files! More... |
4908. Verjeti je ustvarjati : esej na radiu ARSBarbara Pregelj, 2016, radio or television event Abstract: V Baskiji rojeni Miguel de Unamuno je eden plodnejših španskih pisateljev, pa tudi eden vodilnih španskih intelektualcev z začetka 20. stoletja. V slovenščini ga poznamo po esejih Tragično občutje življenja ter Umetnost in resnica, po romanu Megla in pesniški zbirki Velázquezov Kristus. V današnji oddaji boste slišali esej prevajalke in literarne zgodovinarke Barbare Pregelj Verjeti je ustvarjati, posvečen pisatelju in mislecu Miguelu de Unamunu. Besedilo bosta brala Jasna Rodošek in Renato Horvat, glasbeni vložki pa bodo odlomki iz Torre Bermeja – karakterne skladbe za kitaro solo. Igrala jih bo Klara Tomljanovič. Oblikovalec zvoka je bil Vito Plavčak, urednika oddaje pa Mihael Kozjek in Andrej Rot.
Trajanje: 28 minut Keywords: Miguel de Unamuno, Generacija 98, španski misleci, Don Kihot Published in RUNG: 18.01.2017; Views: 3653; Downloads: 0 This document has many files! More... |
4909. Correlations between photocatalytic activity and chemical structure of Cu-modified TiO2–SiO2 nanoparticle compositesT. Čižmar, Urška Lavrenčič Štangar, Iztok Arčon, 2016, original scientific article Abstract: Copper-modified TiO2–SiO2photocatalysts were prepared by sol–gel method based on organic copper,silicon and titanium precursors. Copper concentration varied from 0.1 to 3.0 mol%. A widely appliedmodel reaction of photocatalytic oxidation of terephtalic acid (TPA) in water solution was used in order toevaluate the catalytic activities of elaborated samples. The crystal structures of the titania components ofall tested titania–silica species were studied using XRD analysis. The influence of Cu2+cation incorporationon the crystal structure of titania, as well as the chemical states and the neighbouring structures of coppercations, have been examined by means of Cu K-edge EXAFS and XANES analysis. The experimental datashow that there is a ten times increase in photocatalytic activity when TiO2–SiO2matrix is modified with0.1 mol% of Cu. It can be supposed that an enhancement of photocatalytic activity of low-concentratedcopper-modified titania–silica nanocomposites is probably due to a close attachment of Cu2+cationsto the surfaces of photocatalytically active TiO2nanoparticles. In this case, Cu2+cations may possiblyact as free electron traps reducing the intensity of recombination between opposite free charge carriers(electrons, holes) available at the photocatalyst’s surface. Keywords: Cu-modified TiO2–SiO2photocatalysts, Titanium dioxide, Metal doping, Cu K-edge XANES, EXAFS, Photocatalytic activitya Published in RUNG: 17.01.2017; Views: 5277; Downloads: 0 This document has many files! More... |
4910. Electrical characteristics of the vertical GaN rectifiers fabricated on bulk GaN waferYaqi Wang, Hui Xu, Siddharth Alur, Yogesh Sharma, Fei Tong, Patrick Gartland, Tamara Issacs-Smith, Claude Ahyi, John Williams, Minseo Park, Ginger Wheeler, Mark Johnson, Andrew A. Allerman, Andrew Hanser, Tanya Paskova, Edward A. Preble, Keith R. Evans, 2011, original scientific article Keywords: GaN, rectifier Published in RUNG: 17.01.2017; Views: 4395; Downloads: 0 This document has many files! More... |