PEM or Pem may refer to:
People
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Pem Sluijter (1939–2007), Dutch poet
Science
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Photoelastic modulator
A photoelastic modulator (PEM) is an optical device used to modulate the polarization of a light source. The photoelastic effect is used to change the birefringence of the optical element in the photoelastic modulator.
PEM was first invented by ...
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Polyelectrolyte
Polyelectrolytes are polymers whose repeating units bear an electrolyte group. Polycations and polyanions are polyelectrolytes. These groups dissociate in aqueous solutions (water), making the polymers charged. Polyelectrolyte properties are ...
multilayer
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Positron emission mammography
Positron emission mammography (PEM) is a nuclear medicine imaging modality used to detect or characterise breast cancer. Mammography typically refers to x-ray imaging of the breast, while PEM uses an injected positron emitting isotope and a dedica ...
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Proton exchange membrane
A proton-exchange membrane, or polymer-electrolyte membrane (PEM), is a semipermeable membrane generally made from ionomers and designed to conduct protons while acting as an electronic insulator and reactant barrier, e.g. to oxygen and hydrogen ...
, semipermeable
Engineering
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Plastic encapsulated microcircuits
Plastics are a wide range of synthetic polymers, synthetic or semi-synthetic materials that use polymers as a main ingredient. Their Plasticity (physics), plasticity makes it possible for plastics to be Injection moulding, moulded, Extrusion, e ...
, a method for packaging microcircuits
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Power entry module
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PEM nut or self-clinching nut
Computing
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PCI Express Mini, a computer bus standard
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Privacy-Enhanced Mail
Privacy-Enhanced Mail (PEM) is a de facto file format for storing and sending cryptographic keys, certificates, and other data, based on a set of 1993 IETF standards defining "privacy-enhanced mail." While the original standards were never broadl ...
, whose file format is also often used for
X.509
In cryptography, X.509 is an International Telecommunication Union (ITU) standard defining the format of public key certificates. X.509 certificates are used in many Internet protocols, including TLS/SSL, which is the basis for HTTPS, the secu ...
certificates
Medicine
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Polioencephalomalacia
Polioencephalomalacia (PEM), also referred to as cerebrocortical necrosis (CCN), is a neurological disease seen in ruminants that is caused by multiple factors, one of which is thiamine depletion in the body. Thiamine (vitamin B1) is a key chemic ...
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Protein-energy malnutrition
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Pediatric emergency medicine
Pediatric emergency medicine (PEM) is a medical subspecialty of both pediatrics and emergency medicine. It involves the care of undifferentiated, unscheduled children with acute illnesses or injuries that require immediate medical attention. While ...
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Post-exertional malaise
Post-exertional malaise (PEM) is a worsening of chronic fatigue syndrome symptoms that occurs after exertion. PEM involves increased fatigue, and an exacerbation of other symptoms. PEM is often severe enough to be disabling, and is triggered by o ...
Other
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Parallel Economic Model, a theoretical dual economy model
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Peabody Essex Museum
The Peabody Essex Museum (PEM) in Salem, Massachusetts, US, is a successor to the East India Marine Society, established in 1799. It combines the collections of the former Peabody Museum of Salem (which acquired the Society's collection) and th ...
, an art and historical museum located in Salem, Massachusetts, US
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Padre Aldamiz International Airport
Padre Aldamiz International Airport , also known as Puerto Maldonado International Airport, is an airport serving the city of Puerto Maldonado in the Madre de Dios Region of Peru. The airport oversees a small number of domestic (national) comme ...
, Madre de Dios, Peru, IATA code
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Pemberton railway station, England; National Rail station code
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Pembrokeshire, county in Wales, Chapman code
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Private electronic market
A private electronic market (PEM) uses the Internet to connect a limited number or pre-qualified buyers or sellers in one market. PEMs are a hybrid between perfectly open markets (e.g. exchanges where there is no pre-existing relationship between ...
See also
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{{disambiguation