Definition(s) Flex Joint. A steel and elastomer assembly having central through-passage equal to or greater in diameter than the riser bore that may be positioned in the riser string to reduce local bending stresses.
The Master Naturalist Program is co-sponsored by the Wildlife Resources and State Parks and Recreation sections of the West Virginia Division of Natural Resources, Davis & Elkins College and the West Virginia University Extension Service.
William Masters and Virginia Johnson[edit] William Howell Masters and Virginia Eshelman Johnson pioneered research on human sexual behavior in the 1950s and 1960s. They are a husband and wife duo who while working together to prove many of the long standing misconceptions wrong about sexual behavior.