Creosote from both oil shale and petroleum, and are known as oil-tar creosote when derived from oil tar, and as water-gas-tar creosote when derived from the tar of water gas. Creosote also has been made from pre-coal formations such as lignite, yielding lignite-tar creosote, and peat, yielding peat-tar creosote. The term creosote has a broad range of definitions depending on the origin of the coal tar oil and end use of the material. With respect to wood preservatives, the United States Environmental Protection Agency (EPA) considers the term creosote to mean a pesticide for use as a wood preservative meeting the
Euthymia (medicine) Euthymia (medicine) Euthymia is defined as a normal, tranquil mental state or mood. It is often used to describe a stable mental state or mood in those affected with bipolar disorder that is neither manic nor depressive, yet is distinguishable from healthy controls. Euthymia is also used to describe the "baseline" of other cyclical mood disorders like major depressive disorder (MDD) and narcissistic personality disorder (NPD). This state is the goal of psychiatric and psychological interventions. The word "euthymia" traces its roots to the Greek words "eu", meaning well, and "thymo", meaning soul or emotion. The word "thymos" also had