Physical, metabolic, or chemical change to a less complex form.
The loss of desirable physical properties of a textile material due to some process or physical, chemical or thermal phenomenon.
A deleterious change in one or more properties of a protective glove material due to contact with the chemical.
The process in which enzymes in the membrane of a receiving neuron react with a neurotransmitter to break it up chemically and make it inactive; one method (in addition to reuptake) of terminating a neurotransmitter?s action. See also neurotransmitter, reuptake.
In packaging, a harmful change in the chemical configuration of a plastic.
The chemical process where a material (molecules) seeks to become more stable. For example, the binder on videotape absorbs hydrogen from the environment (like humidity in the air) to become a more stable molecule. During this process, it loses its adhesive properties, becoming sticky and soft. Film acetate reacts with moisture in the air to form acetic acid, which gives off the characteristic odor of vinegar.
Chemical or biological breakdown of a complex compound into simpler compounds.
The breakdown into smaller pieces of an aggregate when subjected to applied forces such as those produces by mixer blades, compaction, heavy wheeled loads, and grinding action.
The breaking down of DNA into smaller fragments by chemical or physical processes. Degradation of DNA may limit its use as evidence.
Loss or reduction of quality, integrity, or character; a chemical reaction that breaks down a molecule into smaller parts.
The fragmenting, or breakdown of DNA by chemical or physical means.
changing of a soil to a more highly leached and weathered state, usually accompanied by morphological changes such as the development of an eluviated, light-colored A-horizon
the process in which a drug undergoes a chemical change in a manner that makes it unstable; see activation
The reduction of a chemical compound to one less complex.
Refers to the loss of integrity of a material when attacked by a chemical. When a glove is dipped into a chemical, does it change color, wrinkle, fall apart, or show other signs of attack? Tests are usually based on weight gain over a period of time, in other words, has material absorbed chemical? Does not indicate if gases passed through material (permeation). Go to top
Reduction in quality. 1. The process whereby the water quality and chemical, physical or biological integrity of a water body is decreased. 2. Habitat quality can be changed by certain management activities. If the quality is reduced then habitat degradation has occurred.
The reduction in size of starch molecules usually with the aid of chemical or enzymatic reagents or by the action of high shear forces. Depolymerisation is a suitable synonym and avoids the negative connotation of "degradation."
a deleterious change in the physical properties of a plastic evidenced by impairment of these properties.
Deleterious change in the chemical structure of a plastic reflected in its appearance or physical properties.
Degradation occurs due to sunlight, soil microorganisms, and chemical reactions in the soil. Soil temperature and moisture can greatly affect degradation. Degradation rate is quantified in terms of degradation half-life, the time required for 50 percent of the pesticide to decompose to products other than the original pesticide. The EPA considers a pesticide with soil half-life of greater than 21 days as having a potential for causing water concerns due to the pesticide's longevity.
The process by which a chemical is decomposed or broken down into less complex compounds or elements.
A change in the structure of a plastic material.
A deleterious change in the chemical structure of a plastic.
The process by which a chemical is reduced to a less complex form.
A deleterious change in properties of a textile.
a deleterious change in the chemical structure, physical properties, or appearance of a material due to natural or artificial exposure.
An unfavorable change in a protective clothing material. This includes a change in color, embrittlement, cracking or hole formation. Just because a material does not degrade in the presence of a chemical does not necessarily mean it provides protection. See Chemical Resistance.
The molecular breakdown of the spilled or released material to render it less hazardous.
A chemical action involving the physical breakdown of protective clothing materials due to contact with a chemical.