All articles starting with P
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Permanent TSB
Permanent TSB, formerly Irish Life & Permanent, is an Irish retail and SME bank offering mortgages and current accounts, holding about 20% of new Irish mortgage lending in 2025.
Permanent Vacation
Permanent Vacation (1980) is Jim Jarmusch's debut feature, a $12,000 NYU thesis film following drifter Allie Parker through decaying Manhattan; rejected at NYU, honored at Mannheim, later a Criterion extra on Stranger Than Paradise.
Permanent vegetative state
Permanent vegetative state, also called chronic VS or unresponsive wakefulness syndrome, is a prognosis of irreversible wakeful unawareness after severe brain injury, declared 3 months (nontraumatic) or 12 months (traumatic) after onset.
Permanent Waves
Permanent Waves is Rush's seventh studio album, released January 1980, recorded at Le Studio, Quebec, with Terry Brown. Six songs, about 36 minutes; first Rush album in the Billboard 200 Top 5, marking the shift to shorter, radio-friendly songs.
Permanent wilting point
The permanent wilting point (PWP) is the soil water content at which plants wilt irrecoverably, conventionally defined as water held at −1500 kPa, and with field capacity it bounds plant-available water.
Permanganate
Permanganate (MnO4−) is a tetrahedral manganese(VII) anion and strong oxidizer, known for its deep purple color and its use in water treatment, most familiar as potassium permanganate.
Permanganate oxidation
Permanganate oxidation is the oxidation of organic compounds and carbon materials by permanganate salts such as potassium permanganate, converting functional groups into diols, ketones, and carboxylic acids.
PERMANOVA
PERMANOVA (permutational multivariate analysis of variance) is a non-parametric method testing whether two or more groups differ in centroid location, introduced by Marti J. Anderson in 2001.
Permeability
Permeability measures how readily molecules cross membranes, in cm/s (log Perm). Covers drug permeability assays (Caco-2, MDCK, PAMPA), aquaporin and ion channel transport, and the synthetic membrane permeability-selectivity trade-off.
Permeability (electromagnetism)
Permeability, also known as magnetic permeability, is the physical quantity relating magnetic flux density B to field intensity H in a material, expressed in henries per meter.
Permeability (porous media)
Permeability, also called intrinsic permeability, is the capacity of a rock or porous material to transmit a fluid. It governs groundwater flow in aquifers and oil movement toward wells.
Permeable interlocking concrete pavement
Permeable interlocking concrete pavement (PICP) is a stormwater management pavement built from concrete pavers with open, aggregate-filled joints over a crushed stone base that stores and infiltrates runoff.
Permeable paving
Permeable paving, also called porous pavement, lets rainwater pass through the surface into soil and gravel instead of running off; types include porous asphalt and pervious concrete.
Permeable reactive barrier
Permeable reactive barrier (PRB), a passive in situ groundwater remediation wall of reactive media such as zero-valent iron; alternative to pump-and-treat, first field use Borden 1991, over 200 installations worldwide.
Permeameter
A permeameter is an apparatus that applies a known hydraulic gradient to water flowing through a soil sample, allowing its hydraulic conductivity to be determined.
Permeation barrier
A permeation barrier is a material or coating that blocks or retards the passage of gases and liquids, ranging from polymer composites to atomically thin graphene membranes.
Permesta rebellion
Permesta (Perjuangan Semesta) rebellion: regional movement proclaimed 2 March 1957 in Makassar by Lt. Col. Ventje Sumual, allied with PRRI from 1958, CIA-backed, defeated by Indonesian government forces; ended with Sumual's surrender 20 October 1961.
Permethrin
Permethrin, a synthetic Type I pyrethroid insecticide first synthesized in 1973, is used in agriculture, mosquito control, treated clothing, and as 5% cream and 1% rinse for scabies and lice, acting on insect sodium channels.
Permian
The Permian is a geologic period from about 299 to 251 million years ago, the last of the Paleozoic Era, ending with the largest mass extinction on record.
Permian ammonites
Permian ammonites (ammonoids): extinct shelled cephalopods of the 47-Myr Permian Period, dominated by Goniatitida, Prolecanitida, and the Ceratitida; nearly wiped out at the end-Permian extinction (~252 Ma) with only a few genera surviving, then rapid Triassic recovery.
Permian amphibian faunas
Permian amphibian faunas are the assemblages of non-amniote tetrapods that lived during the Permian, remaining diverse in the Early Permian before Olson's Extinction and the end-Permian event sharply reduced them.
Permian Basin (North America)
The Permian Basin is a large sedimentary basin underlying West Texas and southeastern New Mexico and one of the world's most prolific oil- and gas-producing regions.
Permian bivalves
Permian bivalves are molluscs that lived during the Permian period, which culminated in the most severe mass extinction of the Phanerozoic at approximately 251.9 million years ago.
Permian Express Oil Pipeline
The Permian Express Oil Pipeline is a crude oil pipeline system carrying Permian Basin crude from West Texas to Gulf Coast terminals and to Cushing, Oklahoma.
Permian High School
Permian High School, Odessa, Texas (opened 1959), a 6A public high school in Ector County ISD known for its MoJo football culture and Friday Night Lights fame; TEA-rated B (81) in 2025-26 with about 4,126 students.
Permian Highway Pipeline
The Permian Highway Pipeline is a natural gas pipeline in Texas, carrying Permian Basin gas from the Waha hub to Katy since entering service in January 2021.
Permian Resources
Permian Resources is an independent oil and gas exploration and production company headquartered in Midland, Texas, formed in 2022 and focused on the Delaware Basin of the Permian Basin.
Permian–Triassic extinction event
The Permian–Triassic extinction event, or Great Dying, about 252 million years ago, killed 81–94% of marine species and 70% of terrestrial vertebrate families, driven by Siberian Traps volcanism, warming, anoxia, and acidification.
Permissible exposure limit
Permissible exposure limit (PEL): OSHA's legally enforceable US workplace airborne chemical limits, mostly 8-hour TWAs in 29 CFR 1910.1000 Tables Z-1 to Z-3; distinguished from non-enforceable NIOSH RELs and ACGIH TLVs.
Permission to Dance on Stage – Live
Permission to Dance on Stage – Live is BTS's first live album, released July 18, 2025 by BIGHIT MUSIC: 22 tracks from their 2021–2022 tour across Seoul, Los Angeles, and Las Vegas, including rearranged hits like Dynamite and Butter.