In all studies presently reported, the period of oscillation is in the vicinity of 0.45 s, using common vegetable cans of size 7.4 cm dia.
(all studies; reported; T:presently) (the period of oscillation; is; in the vicinity of 0.45 s; L:In all studies)
all studies the period of oscillation
reported is
T:presently
in the vicinity of 0.45 s L:In all studies