Foehn wind Labeling for preparations of aspirin combined with caffeine, codeine and the like will sometimes include "Föhnkrankheit" amongst the indications. Evidence for effects from Chinook winds remain anecdotal. The name "Foehn" (, ) arose in the Alpine region. Originating from Latin "(ventus) favonius", a mild west wind of which Favonius was the Roman personification and probably transmitted by or just "fuogn", the term was adopted as . In the Southern Alps, the phenomenon is known as föhn but also and fen in Croatian and Slovene. The German word "Fön" (without the "H", but pronounced the same way), a genericized trademark, also
Neumann boundary condition the boundary must be sufficiently smooth such that the normal derivative can exist, since, for example, at corner points on the boundary the normal vector is not well defined. The following applications involve the use of Neumann boundary conditions: Neumann boundary condition In mathematics, the Neumann (or second-type) boundary condition is a type of boundary condition, named after Carl Neumann. When imposed on an ordinary or a partial differential equation, the condition specifies the values in which the derivative of a solution is applied within the boundary of the domain. It is possible to describe the problem using other boundary