M. Romani | Searcharxiv

arXiv2022

The Second Catalog of Interplanetary Network Localizations of Konus Short Duration Gamma-Ray Bursts

We present the catalog of Interplanetary Network (IPN) localizations for 199 short-duration gamma-ray bursts (sGRBs) detected by the Konus-Wind (KW) experiment between 2011 January 1 and 2021 August 31, which extends the initial sample of IPN localized KW sGRBs (arXiv:1301.3740) to 495 events. We present the most comprehensive IPN localization data on these events, including probability sky maps in HEALPix format.

astro-ph.HE↗

arXiv2019

Raman and ATR FT-IR investigations of innovative silica nanocontaniers loaded with a biocide for stone conservation treatments

In the last years, significant research efforts have been devoted to the reduction of environmental impact of biocides and to the improvement of their effectiveness over time against degradation of stone artifacts. This work reports the spectroscopic characterization of two silica nanosystems, with different geometry and structure, loaded with a biologically-active compound, the 2-mercaptobenzothizole (MBT), for controlled antifouling release on the surface of outdoor stone artefacts. We have combined FT-IR spectroscopy in ATR mode and Raman spectroscopy to investigate the biocide loading mechanism in both nanosystems from the physical and chemical point of view. These techniques demonstrate that the geometry of confinement influences the loading of the nanoparticles and their interaction with the confining medium, with possible consequences in the biocide release rate. Moreover we have seen that the biocide interacts with the surfactant (cetrimonium bromide, CTAB) and tends to dimerize.

physics.app-ph↗