UniSa - IRIS Institutional Research Information System

First beam commissioning of the HZB SRF photoelectron gun

The versatile 1.3 GHz superconducting radio-frequency (SRF) gun at HZB succesfully generated first photoemission beam from a high quantum efficiency (QE) multi-alkali photocathode. This demonstrates worldwide first beam operation of a SRF gun at high repetition rate and with a robust multi-alkali Na-based photoemissionn source. The setup of the test and all sub-systems is described. The latest results of SRF commissioning, cavity performance, photocathode QE measurements and beam parameter ex...

Enhanced Visible-Light Photocatalysis Activity of TiO2/Ag Nanocomposites Prepared by the Ultrasound-Assisted Sol–Gel Method: Characterization and Degradation–Mineralization of Cationic and Anionic Dyes

Coupling TiO2 with various elements could enhance its photocatalytic activity. In this study, an innovative ultrasound-assisted sol–gel method was used to synthesize TiO2/Ag(x%) by varying Ag–support mass (x = 9.3, 17.1, and 23.6%), followed by calcination at 450 °C for 30 min. The aim was to demonstrate that Ag compositing improves photoactivity under visible light (>400 nm). The synthesized photocatalysts were assessed for their effectiveness in the degradation and mineralization of Meth...

Molecular beam epitaxial growth of Sodium Antimonide photocathodes

Extra Virgin Olive Oils from Minuta cv. Display a Characteristic Volatilomic Profile and Their Phytocomplexes Exert Antioxidant Activity in CaCo-2 Cells

This study investigated the chemical composition and biological activity of monovarietal extra virgin olive oils (EVOOs) obtained from the Minuta olive cultivar grown in different Italian regions (Calabria, Sicily, and Tuscany). Volatile organic compounds were characterized by HS-SPME/GC–MS, revealing region-dependent volatilomic profiles mainly associated with the lipoxygenase pathway. Multivariate analysis clearly discriminated Tuscan Minuta EVOO from Calabrian and Sicilian samples. Antioxi...