Segment

In many animals, the body is divided into repeated subunits called segments, such as those in centipedes, insects, and annelid worms. Segmentation is the state of having or ...

segment

Chemistry; Analytical chemistry

A specific, demarcated portion of a lot of a substance that is to be chemically analyzed.

segment

Professional careers; Sales

A sub-sector or market niche, a grouping more narrowly defined and smaller than a sector, a segment can be a horizontal sub-sector across one or more vertical sectors.

freeboard

Chemistry; Analytical chemistry

The space provided above the resin bed in an ion-exchange column to allow for expansion of the bed during backwashing.

calibration reference

Chemistry; Analytical chemistry

Any of the standards of various types that indicate whether an analytical instrument or procedure is working within prescribed limits; examples are test solutions used with pH ...

relative stability test

Chemistry; Analytical chemistry

A color test using methylene blue that indicates when the oxygen present in a sewage plant’s effluent or polluted water is exhausted.

fusion tube

Chemistry; Analytical chemistry

Device used for the analysis of the elements in a compound by fusing them with another compound; for example, analysis of nitrogen in organic compounds by fusing the compound with ...

capacity

Chemistry; Analytical chemistry

In chromatography, a measurement used in ion-exchange systems to express the adsorption ability of the ion-exchange materials.

replication

Chemistry; Analytical chemistry

The formation of a faithful mold or replica of a solid that is thin enough for penetration by an electron microscope beam; can use plastic (such as collodion) or vacuum deposition ...