arianna @arianna Active 6 days, 7 hours ago ActivityProfileGroups 2 PersonalMentionsFavoritesGroups Show: — Everything — Updates New Groups Group Memberships Group Updates arianna joined the group SIG-03 Aperiodic Crystals 6 days, 7 hours ago SIG-03 Aperiodic Crystals View group arianna joined the group SIG-04 Electron Crystallography 1 year, 3 months ago SIG-04 Electron Crystallography View group