arianna @arianna Active 3 weeks, 6 days ago ActivityProfileGroups 2 PersonalMentionsFavoritesGroups Show: — Everything — Updates New Groups Group Memberships Group Updates arianna joined the group SIG-03 Aperiodic Crystals 3 weeks, 6 days ago SIG-03 Aperiodic Crystals View group arianna joined the group SIG-04 Electron Crystallography 1 year, 4 months ago SIG-04 Electron Crystallography View group