PEM or Pem may refer to:

Science and technology

* Photoelastic modulator, an optical device * Polyelectrolyte multilayer, thin films *

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 * Porous European Mix, another name for

asphalt concrete Asphalt concrete (commonly called asphalt, blacktop, or pavement in North America, and Tarmacadam, tarmac or bitumen macadam in the United Kingdom and the Republic of Ireland) is a composite material commonly used to surface road surface, roads ...

Computing and electronics

* Plastic encapsulated microcircuits, a method for packaging microcircuits * Power entry module, used in electrical appliances * PCI Express Mini, a computer bus standard * Privacy-Enhanced Mail, whose file format is also often used for X.509 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 chemi ...

Protein–energy malnutrition Protein–energy undernutrition (PEU), once called protein–energy malnutrition (PEM), is a form of malnutrition that is defined as a range of conditions arising from coincident lack of dietary protein and/or energy (calories) in varying proporti ...

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 ...

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 ...

, a nuclear medicine imaging modality *

Post-exertional malaise Post-exertional malaise (PEM), sometimes referred to as post-exertional symptom exacerbation (PESE) or post-exertional neuroimmune exhaustion (PENE), is a worsening of symptoms that occurs after minimal exertion. It is the hallmark symptom of m ...

Places

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 *

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 one domestic (national) airline with commerc ...

(IATA code), Madre de Dios, Peru * Pemberton railway station (National Rail station code), England *

Pembrokeshire Pembrokeshire ( ; ) is a Principal areas of Wales, county in the South West Wales, south-west of Wales. It is bordered by Carmarthenshire to the east, Ceredigion to the northeast, and otherwise by the sea. Haverfordwest is the largest town and ...

(Chapman code), a county in Wales

People

* Pem Sluijter (1939–2007), Dutch poet

Other uses

* PEM nut or swage nut, a type of nut or threaded insert *

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 betwee ...