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A small amount of radioisotope replacing a nonradioactive isotope of the element in a compound whose path (for example, in the body) or whose decomposition products are to be monitored by detection of radioctivity, also called a radioactive label.

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Frasch Process

Method by which elemental sulfur is mined or extracted. Sulfur is melted with superheated water (at 170°C under high pressure) and forced to the surface of the earth as a slurry.

 

Emulsion

Colloidal suspension of a liquid in a liquid.

Protein Design: Automated protein discovery and synthesis

In this paper I describe (theoretically) the method(s) of automated protein discovery and synthesis.

Density

Density is the ratio b/w Mass and Volume: D=M/V

Water Equivalent

The amount of water that would absorb the same amount of heat as the calorimeter per degree temperature increase.

Conformations

Structures of a compound that differ by the extent of rotation about a single bond.

Alkynes

Unsaturated hydrocarbons that contain one or more carbon-carbon triple bonds.

Inert s-pair Effect

Characteristic of the post-transition minerals, tendency of the outermost s electrons to remain nonionized or un shared in compounds.

Ostwald Process

A process for the industrial production of nitrogen oxide and nitric acid from ammonia and oxygen.

Differential Thermometer

A thermometer used for accurate measurement of very small changes in temperature.