The case of Capogrossi in Rome: criteria and limits in the retouching process of a contemporary mural painting

This paper focuses on the reintegration treatments studied for a contemporary mural painting, which was designed and carried out by the Italian artist Giuseppe Capogrossi in 1954. This forgotten masterpiece is located on the ceilings of the main double staircase at the entrance of the Airone, an ex-cinema theatre in Rome, which was designed and planned during the Fifties by the famous architects Adalberto Libera, Eugenio Montuori and by the engineer Leo Calini. After a brief introduction based on the conservation history of the building and on the painting itself, it will be described criteria and limits in the reintegration process of a sample area of this highly degraded polyvinyl acetate (PVAc) based mural. The materials selected in the reintegration project, based on natural polymers and synthetic polymers, will be theoretically compared with one another and it will be explained why some of these could be appropriate and effective, while others could not chromatically work in this particular case

INSECTS AND FUNGI ON THE RELICT ZELKOVA SICULA(ROSALES, ULMACEAE)IN SICILY (ITALY): NEW RECORDS AND KNOWN SPECIES IN A SHORT REVIEW

The Authors report the results of a study conducted with the purpose of increasing the knowledge about theinsects and fungi living on Zelkova siculaDi Pasquale, Garfì & Quézel, 1992 (Rosales, Ulmaceae). The plant is a veryrare relict of the Tertiary period, belonging to a genus of trees extinct in continental Europe. Only two small populationsare known living in a restricted woodland in the province of Syracuse, Sicily. The results concern both the insectspicked up during surveys that were carried out in 2014 and 2015, and the species of fungi and insects already known onZelkova siculafrom literature. As a result of surveys, two species of Buprestidae, two species of Cerambycidae, andtwo of Lepidoptera have been recognized. From literature, seven species of phytophagous insects are reported onZelkova sicula, they belong to Hemiptera: Aphididae (1 sp.), Diaspididae (1 sp.), Coccidae (1 sp.); Coleoptera:Buprestidae (1 sp.), Cerambycidae (2 spp.); and Lepidoptera: Lasiocampidae (1 sp.). Five species of fungi are knownfrom literature and they belong to: Botryosphaeriales (3 spp.), Pleosporales (1 sp.), and Diaporthales (1 sp.)

Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements