Liquefaction of gases low temperatures, using, for example, turboexpanders. The liquefaction of air is used to obtain nitrogen, oxygen, and argon and other atmospheric noble gases by separating the air components by fractional distillation in a cryogenic air separation unit. Air is liquefied by the Linde process, in which air is alternately compressed, cooled, and expanded, each expansion results in a considerable reduction in temperature. With the lower temperature the molecules move more slowly and occupy less space, so the air changes phase to become liquid. Air can also be liquefied by Claude's process in which the gas is allowed to expand isentropically
The More Abundant Life The More Abundant Life The More Abundant Life was a phrase of scriptural flavor used by the U.S. President Franklin D. Roosevelt in his address before the Inter-American Conference for the Maintenance of Peace in Buenos Aires, Argentina, December 1, 1936, to signify the improved living conditions and enlarged cultural and economic opportunities available to the whole world through the maintenance in the Western Hemisphere of constitutional representative government based on faith in God. The phrase is taken from the saying of Jesus at John 10:10: "The thief cometh not, but for to steal, and to kill, and to destroy: