A gasliquid separator is provided in which separation performance for fluid into gas and liquid is enhanced. The roller assemblies are mounted to a frame forming a space between the rollers. The foregoing is accomplished by addressing and sorting employee mailpieces in one process by using information from one or more databases of the mail sorting apparatus, including the addressee database and sort plan, and an in-line printer for printing employee andor delivery information on the employee mailpiece. The ligament is made preferably of a nickel titanium alloy selected to have ductile inelastic properties at body temperature and is capable of plastic deformation to allow relative constrained motion between the vertebral bodies. Furthermore, the apparatus comprises a first reflector which separates the first and second active materials and which is configured to reflect light at the first wavelength and which is configured to be substantially transparent to light at the second wavelength.