A wooden ammeter for measuring current was in use from 1900 until the 1980s; the system's rotary converters that changed alternating current into direct current were used until 1999; a 1932 control board was in service until 1994.
The bisthienylethene rhodamine 6G dyad exhibit excellent phtochromism with reversibly color and fluorescence changes alternating irradiation with ultraviolet and visible light.
As the observer moves around the piece, their perception of it changes, alternating depending on their position, adding a further visual dimension to the piece.
Media was changed alternating every 3 or 4 d at which time fresh acALY18 was added.
"Customers may qualify for a change to alternate destinations, travel dates or a refund.
Some of the drawbacks, however, are that you may not have much input into the selection of the caregiver, and the caregivers may change or alternate, which can cause a disruption in care and confusion.
Second, the copy number profile across the chromosome arm shows many positions at which copy number changes, but these changes alternate between just two states, namely one or two copies.
The relative contribution of these changes to alternate developmental trajectories will require additional molecular and cell biological data.
Changes to alternate isoforms of these genes (e.g Prx1, Prx4, Grx2, Trx2) were not factored into the model simulations in Figures 5 & 6.
Thereafter, 3 patients continued this regimen, 8 were changed to alternate day treatment for the last 12 months, and the remaining used 0.05% tretinoin for 5 months and then reduced to alternate day application till the end of therapy.
