For example, a graphite/epoxy (graphite fibers suspended in an epoxy matrix) lamina may be on the order of 0.127 mm thick. For the purpose of analysis, a lamina is typically modeled as having one layer of fibers through the thickness.
Minnesota allows dental therapists with direct supervision; and advanced dental therapists (ADT) with general supervision. ADTs may be dually licensed as an ADT and registered dental hygienist (RDH). Maine allows dental hygiene therapists (DHT) with direct supervision.
Most states, the District of Columbia, and Puerto Rico require occupational therapists and occupational therapy assistants to be licensed (a few states have certification or registration by a state agency).States have similar, but not identical requirements and procedures for obtaining a license.pply for a license and pay a fee for each state/jurisdiction in which you wish to practice or hold a license. Many, but not all states allow practitioners to practice on a temporary license or limited permit while waiting to take or receive the results of the certification exam.