Both the medulla and the pons are considered part of the hindbrain. The midbrain, or mesencephalon, connects the pons to the diencephalon and forebrain. Besides relaying sensory and motor signals, the structures of the brain stem direct involuntary functions. The pons helps control breathing rhythms.
the blister blog allied chemical now honeywell began development of pctfe film in the early 1960s an application for the trademark was made on june 19 1961 and granted on march 27 1962 the trademark application notes that aclar is a fluorine containing plastic in sheet or film form the first use was august 11 1960 the polymer was extruded in pottsville pa and the search for applications markets and products began
A: Kevlar is made of paraphenylenediamine and terephthaloyl chloride. This combination creates aramaid threads that are dissolved and then spun into regular fibers, which are woven into fabrics. Kevlar fabrics are durable and extremely flexible. When the Kevlar is combined with resin, it results in a material that is light and 20 times stronger than steel and other unique alloys created by specialists. There are three common types of Kevlar: Kevlar, Kevlar 29 and Kevlar 49. They have varying applications, such as reinforcing tires, armoring military vehicles and personnel, and creating fireproof fabrics for fire fighters. The complex process of producing Kevlar makes it an expensive material. Learn more about Chemistry