Such industrial fractionating towers are also used in air separation, producing liquid oxygen, liquid nitrogen, and high purity argon.

The plant also produces liquid nitrogen, krypton and xenon as a by-product of liquid oxygen production.

Then, as the engine returns to lean operation, the ammonia reacts with nitrogen oxides in the exhaust stream to produce water and nitrogen.

This reaction produces nitric oxide, nitrogen, and sodium hydroxide.

The shock wave method is used to produce material called heterodiamond, a superhard compound of boron, carbon, and nitrogen.

These bacteria thus produced very little nitrogen for their plants, and the researchers found that they were penalized accordingly.

The system produces nitrogen of varying purity, depending on how much gas it is called upon to produce.

Along the way, however, these same stars produce carbon, oxygen and nitrogen, the elements essential for life.

A major application of cryogenics is the fractional distillation of air to produce oxygen, nitrogen, and other gases.

Observations of high-mass stars indicate that they produce less nitrogen, as compared to other heavy elements, than do low-mass stars.