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air contaminant

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  • contaminant — [kən tam′ə nənt] n. a substance that contaminates another substance, the air, water, etc …   English World dictionary

  • Air purifier — An air purifier is a device which removes contaminants from air. Air purifiers are commonly marketed as being particularly beneficial to allergy sufferers and asthmatics, and at reducing second hand tobacco smoke. Use of purifiers Dust, pollen,… …   Wikipedia

  • contaminant — [[t]kəntæ̱mɪnənt[/t]] contaminants N COUNT: usu pl A contaminant is something that contaminates a substance such as water or food. [FORMAL] Contaminants found in poultry will also be found in their eggs... We are exposed to an overwhelming number …   English dictionary

  • Criteria air contaminants — (CAC), or criteria pollutants, are a set of air pollutants that cause smog, acid rain and other health hazards. The laws and regulations of different polities may define different sets. CACs are typically emitted from many sources in industry,… …   Wikipedia

  • Bleed air — in gas turbine engines is compressed air taken from within the engine, after the compressor stage(s) and before the fuel is injected in the burners. While in theory bleed air could be drawn in any gas turbine engine, its usage is generally… …   Wikipedia

  • Échangeur air-sol — Un échangeur air sol (également connu sous le nom de puits canadien, ou puits provençal) est un échangeur géothermique à très basse énergie utilisé pour rafraîchir ou réchauffer l air ventilé dans un bâtiment. Ce type d échangeur est notamment… …   Wikipédia en Français

  • Pease Air Force Base — Infobox Military Structure name = Pease Air National Guard Base partof = New Hampshire Air National Guard (ANG) location = Located near Portsmouth, New Hampshire coordinates = coord|43|04|41|N|070|49|24|W|region:US type:airport caption = USGS… …   Wikipedia

  • Room air distribution — Characterizing how air is introduced to, flows through, and is removed from spaces is called room air distribution. [Fundamentals volume of the ASHRAE Handbook , Atlanta, GA, USA, 2005] HVAC airflow in spaces generally can be classified by two… …   Wikipedia

  • Passive smoking — is the involuntary inhalation of smoke from tobacco products. It occurs when tobacco smoke permeates any environment, causing its inhalation by all people within that environment. Such smoke is called secondhand smoke (SHS) or environmental… …   Wikipedia

  • Risk factors for breast cancer — Risk factors of breast cancer may be divided into preventable and non preventable. Their study belongs in the field of epidemiology. Breast cancer, like other forms of cancer, is considered to result from multiple environmental and hereditary… …   Wikipedia

  • Epidemiology and etiology of breast cancer — Epidemiological risk factors for a disease can provide important clues as to the etiology, or cause, of a disease. The first work on the epidemiology and etiology of breast cancer was done by Janet Lane Claypon, who published a comparative study… …   Wikipedia

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