electrolytic fractionation

См. также в других словарях:

• rare-earth element — /rair errth /, Chem. any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons. Also called rare earth metal. [1955 …   Universalium

• separation and purification — ▪ chemistry Introduction       in chemistry, separation of a substance into its components and the removal of impurities. There are a large number of important applications in fields such as medicine and manufacturing. General principles… …   Universalium

• chemical industry — Introduction       complex of processes, operations, and organizations engaged in the manufacture of chemicals and their derivatives.       Although the chemical industry may be described simply as the industry that uses chemistry and… …   Universalium

• Protein precipitation — Precipitation is widely used in downstream processing of biological products, such as proteins. [http://www.rcsb.org/pdb/home/home.do] This unit operation serves to concentrate and fractionate the target product from various contaminants. For… …   Wikipedia

• cell — cell1 cell like, adj. /sel/, n. 1. a small room, as in a convent or prison. 2. any of various small compartments or bounded areas forming part of a whole. 3. a small group acting as a unit within a larger organization: a local cell of the… …   Universalium

• petroleum refining — Introduction  conversion of crude oil into useful products. History Distillation of kerosene and naphtha       The refining of crude petroleum owes its origin to the successful drilling of the first oil well in Titusville, Pa., in 1859. Prior to… …   Universalium