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abatement

Overview page. Subjects: Public Health and Epidemiology — Environmental Science.

Reduction or preferably elimination of public health hazards or nuisances such as environmental pollutants, noxious smells, excessive noise. Abatement is often an important activity in...

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abscissa

Overview page. Subjects: Public Health and Epidemiology — Chemistry.

The horizontal or X axis of a graph; the vertical or Y axis is the ordinate, and the two axes are the Cartesian coordinates.

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acid aerosol

Overview page. Subjects: Public Health and Epidemiology — Environmental Science.

Acidic liquid or solid particles small enough to become airborne. High concentrations can irritate the lungs and have been associated with respiratory diseases like asthma.

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acid precipitation

Overview page. Subjects: Ecology and Conservation — Public Health and Epidemiology.

(mist, fog, rain) Syn: acid deposition. Atmospheric acid aerosols are removed by wet deposition (rain, snow, mist, fog) or dry deposition of particles on vegetation. This is harmful to...

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actinic radiation

Overview page. Subjects: Chemistry — Public Health and Epidemiology.

Electromagnetic radiation that is capable of initiating a chemical reaction. The term is used especially of ultraviolet radiation and also to denote radiation that will affect a...

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adjustment

Overview page. Subjects: Public Health and Epidemiology — Environmental Science.

Change or adaptation within a system that serves to accommodate the factor(s) that are promoting the change and produce a new equilibrium. A system changes when it is forced to, otherwise...

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afterburner

Overview page. Subjects: Environmental Science — Public Health and Epidemiology.

Equipment used in an incinerator, in which the exhaust gases are passed through a burner to remove smoke and odours. This helps to completely combust unburned or partially burned carbon...

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agglomerate

Overview page. Subjects: Environmental Science — Public Health and Epidemiology.

A collection of solid particles that adhere to one another, or a substance that aggregates into an ill-defined clump.

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agro-ecosystem

Overview page. Subjects: Public Health and Epidemiology — Environmental Science.

An agricultural system viewed as an ecosystem or open system, where the objective is sustainable management of the interrelationships between system components (including crops, pastures,...

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air emission

Overview page. Subjects: Environmental Science — Public Health and Epidemiology.

Release or discharge of a pollutant from a stationary source, such as a furnace stack or agricultural feedlot, or a mobile source, such as the exhaust pipe of an automobile.

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