PEM or Pem may refer to:

People

Pem Sluijter PEM or Pem may refer to: People * Pem Sluijter (1939–2007), Dutch poet Science * Photoelastic modulator * Polyelectrolyte multilayer * Positron emission mammography * Proton exchange membrane, semipermeable Engineering *Plastic encapsulated ...

(1939–2007), Dutch poet

Science

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 ...

Polyelectrolyte Polyelectrolytes are polymers whose repeating units bear an electrolyte group. Ion#Anions and cations, Polycations and polyanions are polyelectrolytes. These groups dissociation (chemistry), dissociate in aqueous solutions (water), making the pol ...

multilayer *

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 ...

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 g ...

, semipermeable

Engineering

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 *

Power entry module {{Unreferenced, date=March 2011 A power entry module (PEM) is an electromechanical component used in electrical appliances, integrating the appliance inlet with other components such as: * a switch, possibly including integrated or remote bowden ...

* PEM nut or self-clinching nut

Computing

PCI Express Mini PCI Express (Peripheral Component Interconnect Express), officially abbreviated as PCIe or PCI-e, is a high-speed serial computer expansion bus standard, designed to replace the older PCI, PCI-X and AGP bus standards. It is the common ...

, a computer bus standard *

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

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 ...

* Protein-energy malnutrition *

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 ...

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

Parallel Economic Model Parallel Economic Model (PEM) is a theoretical dual economy model meant for use used within a State or Province of a larger nation-state. Description Most western countries use a singular Linear-Economic (LEM) model for all Commerce. This include ...

, a theoretical dual economy model *

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 the ...

, an art and historical museum located in Salem, Massachusetts, US *

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 *

Pemberton railway station Pemberton railway station serves the Pemberton area of Wigan in Greater Manchester, England. It is on the Kirkby branch line from Wigan Wallgate. The station was opened on 20 November 1848 by the Liverpool and Bury Railway. It on the A571 Bil ...

, England; National Rail station code *

Pembrokeshire Pembrokeshire ( ; cy, Sir Benfro ) is a Local government in Wales#Principal areas, county in the South West Wales, south-west of Wales. It is bordered by Carmarthenshire to the east, Ceredigion to the northeast, and the rest by sea. The count ...

, county in Wales, Chapman code *