Others pivot from both bottom (like a hopper) and the side (like a casement). Also called Dual Action. Double-Hung Windows: Include offset upper and lower sashes, which can both move up and down in the frame. A window having two vertically sliding sash, each closing a different part of the window.
Reaction of sugar oxazolines with primary amines. In order to scrutinize the reaction pathway and structure of the reaction product, we started with a simple sugar oxazoline and a primary amine, carrying no other functional groups.
By Anne Marie Helmenstine, Ph.D. Definition: An amine is a compound in which one or more of the hydrogen atoms in ammonia have been replaced by an organic functional group. Amines are generally weak bases. Further, most amines are organic bases. Amines have the prefix amino-or the suffix-amine included in their name. Examples: Methylamine is an amine.