For example, tricyclic antidepressants, such as imipramine and desipramine, are effective treatments for panic disorder because they increase the concentrations of neurotransmitters at nerve terminals, where the chemicals exert their actions.
The drying process may increase the concentrations of different nutrients due to condensation.
Reactions between ozone and terpenes have been shown to increase the concentrations of submicron particles in indoor settings.
The addition of a relatively small amount of dimethyl ether to ethylene was found experimentally to increase the concentrations of both polycyclic aromatic hydrocarbons and soot.
If organic contaminants are present and used by microbe as carbon source, biodegradation reactions will transform organic contaminants into dissolved inorganic carbon, which can increase the concentrations of bicarbonate significantly.
Organic wastes are composted to stabilize organic matter, reduce the moisture content, increase the concentrations of plant nutrients, eliminate pathogens and weed seeds, develop disease suppressiveness, and reduce greenhouse gas emissions.
