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Particulate Nucleation
Particulate matter (PM) or particulates are microscopic particles of solid or liquid matter suspended in the air. An ''aerosol'' is a mixture of particulates and air, as opposed to the particulate matter alone, though it is sometimes defined as a subset of aerosol terminology. Sources of particulate matter can be natural or anthropogenic. Particulates have impacts on climate and precipitation that adversely affect human health. Types of atmospheric particles include suspended particulate matter; thoracic and respirable particles; inhalable coarse particles, designated PM, which are coarse particles with a diameter of 10 micrometers (μm) or less; fine particles, designated PM, with a diameter of 2.5 μm or less; ultrafine particles, with a diameter of 100 nm or less; and soot. Airborne particulate matter is a Group 1 carcinogen. Particulates are the most harmful form of air pollution as they can penetrate deep into the lungs and brain from blood streams, causing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PM And A Human Hair
PM or pm (also written P.M. or p.m.) is an abbreviation for Latin ''post meridiem'', meaning "after midday" in the 12-hour clock. PM or Pm or pm may also refer to: Arts and entertainment *Palm mute#Notation, Palm mute, a guitar playing technique *PM (radio program), ''PM'' (radio program), Australia *PM (BBC Radio 4), ''PM'' (BBC Radio 4), UK *''PM Magazine'', an American TV news program (1976–1991). *PM (newspaper), ''PM'' (newspaper), US (1940–1948) *PM Press, an American publishing company *''Pocket Mortys'', a role-playing video game *Project Mayhem, a fictional conspiracy in the book and film ''Fight Club'' * PM, a band with drummer Carl Palmer. Business and economics Businesses *P.M. Place Stores, a former US chain of discount stores *Pere Marquette Railway, North America 1900–1947, reporting mark *Philip Morris International, a tobacco company Terminology *Performance management of an organisation *Portfolio manager *Preventive maintenance *Project manager *Product ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
