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From Wikipedia, the free encyclopedia

PEM may stand for:

• The IATA code for the Padre Aldamiz International Airport in Puerto Maldonado, Madre de Dios, Peru

• Privacy-enhanced Electronic Mail

• Proton exchange membrane – as in "fuel cell", applications include use in proton-exchange fuel cells, used to manipulate hydrogen for energy conversion.

• Porous European Mix – a type of asphalt used on roads and airport runways, commonly referred to as PEM.

• Positron Emission Mammography

• Power Entry Module

• Photo-electro magnetic effect

• Plesk Enterprise Manager software

• Polyelectrolyte multilayer

• Protein-energy malnutrition

• in Public-key cryptography, the .pem suffix is used for a Base64-encoded X.509 certificate

nl:PEM