The present invention relates to a drug delivery device for mixing and delivering a drug by injection. The conveyor uses a special high angle lift belt with projecting lugs of approximately two inches high and having cooperating angled elements that form material receiving pockets. The bracket also includes cable grip protrusions that align with the entry ports into the fiber optic splice closure. The VTE of the actuator is periodically calculated as the measured load factor parameters and the measured actuator operational control values change during operation of the structural system. In another embodiment, the at least one gate dielectric layer is a silicon oxide layer.