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PEM Fuel Cells
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 microcircuits, a method for packaging microcircuits * Power entry module * PEM nut or self-clinching nut Computing * PCI Express Mini, a computer bus standard * Privacy-Enhanced Mail, whose file format is also often used for X.509 certificates Medicine * Polioencephalomalacia * Protein-energy malnutrition * Pediatric emergency medicine * Post-exertional malaise Other * Parallel Economic Model, a theoretical dual economy model * Peabody Essex Museum, an art and historical museum located in Salem, Massachusetts, US * Padre Aldamiz International Airport, Madre de Dios, Peru, IATA code * Pemberton railway station, England; National Rail station code * Pembrokeshire, county in Wales, Chapman code * Private electronic market A private ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 microcircuits, a method for packaging microcircuits * Power entry module * PEM nut or self-clinching nut Computing * PCI Express Mini, a computer bus standard * Privacy-Enhanced Mail, whose file format is also often used for X.509 certificates Medicine * Polioencephalomalacia * Protein-energy malnutrition * Pediatric emergency medicine * Post-exertional malaise Other * Parallel Economic Model, a theoretical dual economy model * Peabody Essex Museum, an art and historical museum located in Salem, Massachusetts, US * Padre Aldamiz International Airport, Madre de Dios, Peru, IATA code * Pemberton railway station, England; National Rail station code * Pembrokeshire, county in Wales, Chapman code * Private electronic market A private ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 chemical in glucose metabolism that, when deficient, is most threatening to neurological activity. In addition to altered thiamine status, an association with high sulfur intake has been observed as a potential cause of PEM. Other toxic or metabolic diseases (eg, acute lead poisoning, sodium toxicosis/water deprivation) can result in PEM as well. Cattle, sheep, goat, and other ruminants that are diagnosed with PEM or pre-PEM suffer opisthotonus, cortical blindness, disoriented movement, and eventually fatality, if left untreated. Current data shows that the onset of PEM can range from birth to late adulthood. Causes Thiamine deficiency Thiamine availability is controlled by the direct dietary consumption of thiamine. Thiamine availability is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pemberton Railway Station which runs every 10 minutes combined from Wigan town centre.
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 Billinge Road. The platforms are at the bottom of two ramps (one on each side) which until recently was cobbled on the bound platform. Once on the platform, the line underneath the bridge is obscured by overgrown trees. Pemberton is served by major bus routes 1 and 2 operated by Stagecoach Manchester Stagecoach ManchesterCompanies House extract company no 2818654 Facilities This station is unmanned, however it is accessible via steep ramps from street level. ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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) commercial flights. Padre Aldamiz International Airport is near some of Peru's noted ecological areas, such as the national jungle reserve of Tambopata-Candamo. Like many airports around the world, Padre Aldamiz International Airport benefits mostly from one type of traveler, in this case ecology tourists. Western doctors often warn that airport authorities require travelers to carry documentation informing about yellow fever vaccination because of its rainforest location. The airport was served by Peru's national airline, AeroPerú. AeroPerú ceased operations in 1999, and, subsequently, other airlines have entered the Lima to Puerto Maldonado air route. Nuevo Continente made an attempt in 2004, but that airline suspended operations amid al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 Essex Institute. PEM is one of the oldest continuously operating museums in the United States and holds one of the major collections of Asian art in the United States. Its total holdings include about 1.3 million pieces, as well as twenty-two historic buildings. After opening newly expanded spaces in 2019, PEM now ranks in the top 10 North American art museums in terms of gallery square footage, operating budget and endowment. The PEM holds more than 840,000 works of historical and cultural art covering maritime, American, Asian, Oceanic and African art, Asian export art, and two large libraries with over 400,000 books and manuscripts. History In 1992, the Peabody Museum of Salem merged with the Essex Institute to form the Peabody E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 includes Banking and Trade based transactions. Under a PEM based system there is also a Secondary State-Provincial (SSP) sanctioned secondary currency and sub-economy that is meant only to allow basic Commerce to occur within that State or Province. The State currency used in this case is not traded on international FX currency markets, so as not to compete with the National Currency. The goal of keeping that currency localized is also to help foster local economies. Particularly those that have been effected (or at risk of being effected) by any National Currency crisis situation. Be that hyper-inflation, debt, systematic banking collapse, or devaluation of the national currency, etc. The Secondary State-Provincial level currency is al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 ordinary activities that healthy people tolerate. Post-exertional malaise typically begins 12–48 hours after the activity that triggers it, and lasts for days, but this is highly variable. Management of PEM is symptomatic, and patients are recommended to pace their activities to avoid triggering PEM. Description Post-exertional malaise involves fatigue, and is of such a severity that it impacts a person's functioning. Other symptoms that may be experienced during PEM include cognitive impairment, flu-like symptoms, pain, weakness or trouble sleeping. While typically cast as a worsening of existing symptoms, patients may experience some symptoms exclusively during PEM. Patients often describe PEM as "crash," "relapse," or "setback." PEM ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 not usually providing long-term or continuing care, pediatric emergency doctors undertake the necessary investigations and interventions to diagnose patients in the acute phase, to liaise with physicians from other specialities, and to resuscitate and stabilize children who are seriously ill or injured. Pediatric emergency physicians generally practice in hospital emergency departments. Training United States Pediatric emergency physicians in the United States take one of two routes of training; one can do a pediatrics residency (3 years) followed by a pediatric emergency fellowship (3 years), or an emergency medicine residency (3–4 years) followed by a pediatric emergency fellowship (3 years). Majority of practicing PEM doctors take th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 broadly adopted and were supplanted by PGP and S/MIME, the textual encoding they defined became very popular. The PEM format was eventually formalized by the IETF in RFC 7468. Format Many cryptography standards use ASN.1 to define their data structures, and Distinguished Encoding Rules (DER) to serialize those structures. Because DER produces binary output, it can be challenging to transmit the resulting files through systems, like electronic mail, that only support ASCII. The PEM format solves this problem by encoding the binary data using base64. PEM also defines a one-line header, consisting of , a label, and , and a one-line footer, consisting of , a label, and . The label determines the type of message encoded. Common labels include , , ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 J. Badoz in the 1960s and originally called a "birefringence modulator." It was initially developed for physical measurements including optical rotary dispersion and Faraday rotation, polarimetry of astronomical objects, strain-induced birefringence, and ellipsometry. Later developers of the photoelastic modulator include J.C Kemp, S.N Jasperson and S.E Schnatterly. Description The basic design of a photoelastic modulator consists of a piezoelectric transducer and a half wave resonant bar; the bar being a transparent material (now most commonly fused silica). The transducer is tuned to the natural frequency of the bar. This resonance modulation results in highly sensitive polarization measurements. The fundamental vibration of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 motherboard interface for personal computers' graphics cards, hard disk drive host adapters, SSDs, Wi-Fi and Ethernet hardware connections. PCIe has numerous improvements over the older standards, including higher maximum system bus throughput, lower I/O pin count and smaller physical footprint, better performance scaling for bus devices, a more detailed error detection and reporting mechanism (Advanced Error Reporting, AER), and native hot-swap functionality. More recent revisions of the PCIe standard provide hardware support for I/O virtualization. The PCI Express electrical interface is measured by the number of simultaneous lanes. (A lane is a single send/receive line of data. The analogy is a highway with traffic in both directions. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
