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.
The US Marine Corps was officially established in 1794, but it prefers to date its beginning to 1775 with the establishment of the Continental Marines, just as the US prefers to date its beginning with the signing of the Declaration of Independence in 1776 rather that the signing of the US Constitution in 1787.