There are five basic gasifier technologies currently in commercial use: â 1 Down Draftâ Fixed Bed. â 2 Up Draftâ Fixed Bed. 3  Fluidized Bed Reactor. 4  Entrained Flow. 5  Plasma.
2 B. Brief History of HMOs A health maintenance organization is defined as âan organization that combines the provision of health insurance and the delivery of health care services.â (Given 1994) Early HMOs and HMO-like institutions developed in the 1930s.
A minority of demographers and researchers start the generation in the mid-to-late 1970s, such as Synchrony Financial which describes Millennials as starting as early as 1976, Mobilize.org which uses 1976â1996, MetLife which uses birth dates ranging from 1977â1994, and Nielsen Media Research which uses 1977â1995.