All articles starting with P
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Purge and trap
Purge and trap, also called dynamic headspace extraction, is a sample-preparation technique invented in 1974 that concentrates volatile organic compounds for analysis by gas chromatography.
Purge of Peng Yue and Ying Bu's rebellion
The purge of Peng Yue and Ying Bu's rebellion (彭越、英布之诛) was the execution of Peng Yue, King of Liang, and Ying Bu's ensuing revolt under Emperor Gaozu of Han.
Puri (पूरी) (food)
Puri (पूरी), also poori, is an unleavened Indian deep-fried flatbread of stiff wheat dough that puffs in hot oil; variants include Bengali luchi (maida), Bedmi puri (urad dal), and rice-flour pathiri.
Puri (ପୁରୀ)
Puri (ପୁରୀ) is a coastal city in Odisha, India, seat of the 12th-century Jagannath Temple, one of the Char Dham pilgrimage centres, and home of the annual Rath Yatra chariot festival.
Puri Jagannadh (పూరి జగన్నాధ్)
Puri Jagannadh (పూరి జగన్నాధ్) is a Telugu film director, producer and screenwriter, debutant-maker behind Pokiri (2006) and Idiot, now returning with Slumdog – 33 Temple Road.
Puri Rath Yatra chariots
The Puri Rath Yatra chariots are three wooden chariots, Nandighosa, Taladhwaja, and Darpadalana, built anew each year in Puri, Odisha, to carry Jagannatha and his siblings.
Purico Complex
Purico Complex, a Pleistocene pyroclastic shield volcano in northern Chile's Central Volcanic Zone at 23°S 67.75°W, 5,703 m high, formed by two ~1.3 Ma ignimbrite sheets with Holocene domes, the Macon stratovolcano, and the active Alitar maar.
Purification Rundown
Purification Rundown, also called Purif or Hubbard Method: a Scientology detox regimen of exercise, sauna, niacin, and supplements introduced by L. Ron Hubbard on December 4, 1979, used in Narconon and as an auditing prerequisite; scientific evidence is limited.
Purifications
Purifications (Greek Katharmoi) is a hexameter poem attributed to the fifth-century BCE philosopher-poet Empedocles of Acragas, carrying his religious teaching on exiled daimons and rebirth.
Purified seawater salt replacer
Purified seawater salt replacer (Mediterranea Agua de Mar): filtered, deboronated Mediterranean seawater notified as GRAS (GRN 000618, FDA no-questions letter May 27, 2016) as a liquid flavoring agent replacing sodium chloride in foods.
Purified water
Purified water, also called DI water or pure water, is water from any source treated to remove chemicals, dissolved solids, and microbes to a defined standard.
Purim (פורים)
Purim (פורים), also called the Feast of Esther, is a Jewish festival held on 14 Adar, February or March, celebrating the survival of Persian Jews told in the Book of Esther.
Purim Torah
Purim Torah is a genre of playful, often satirical, absurdist Torah discourse for the holiday of Purim, using talmudic logic to reach ridiculous conclusions orally or in written parody.
Purim-shpil
The Purim-shpil (Yiddish: פּורים־שפּיל) is a comic Yiddish folk play performed by amateur actors during the Jewish festival of Purim, known as the foundation of modern Jewish theater.
Purine
Purine is a fused, double-ring organic compound occurring in nucleic acids; its ring system underlies the bases adenine and guanine in DNA and RNA, and caffeine.
Purine catabolism
Purine catabolism: breakdown of purine nucleotides (AMP, GMP) via PNP and xanthine dehydrogenase to uric acid, the human end product; other mammals use uricase to make allantoin. Linked to gout, allopurinol, and urate transporters URAT1, GLUT9, ABCG2.
Purine nucleoside phosphorylase
Purine nucleoside phosphorylase (PNP, EC 2.4.2.1), also called nucleoside phosphorylase, is a trimeric purine salvage enzyme phosphorolyzing inosine and guanosine; deficiency causes T-cell SCID, and forodesine inhibits it.
Purine nucleoside phosphorylase DeoD-type
Purine nucleoside phosphorylase DeoD-type (PNP, deoD gene product, EC 2.4.2.1) is a bacterial hexameric salvage enzyme that reversibly cleaves purine nucleosides to bases plus ribose-1-phosphate; used in enzyme prodrug therapy.
Purine nucleoside phosphorylase I, inosine/guanosine-specific
Purine nucleoside phosphorylase I, inosine/guanosine-specific (EC 2.4.2.1) is an enzyme family cleaving inosine and guanosine in purine salvage; trimeric mammalian and hexameric bacterial forms exist, and its deficiency impairs immunity.
Purine salvage
Purine salvage recycles free purine bases and nucleosides from DNA and RNA breakdown into nucleotide monophosphates via APRT, HPRT1, and adenosine kinase, costing about 1 ATP per purine versus 6 for de novo synthesis; its deficiency causes Lesch-Nyhan disease.
Puris
Puris, legally Puris Proteins, LLC and formerly World Food Processing, is a family-owned Minneapolis maker of pea protein, pea starch, and pea fiber, described as North America's largest pea protein producer.
Purism
Purism is a French art movement founded by Amédée Ozenfant and Charles-Édouard Jeanneret, later known as Le Corbusier, which sought a rational, orderly art matched to the machine age.
Puritama Hot Springs
Puritama Hot Springs (Termas de Puritama) is a set of eight geothermal pools on the Puritama River in Chile's Atacama Desert, near San Pedro de Atacama.
Puritans
The Puritans were an intense variety of English Reformed Protestantism that arose within the Church of England, never a single organized body, and shaped New England through the Great Migration of 1629 to 1640.
Purity ring
Purity ring, also called chastity or promise ring: a ring worn to signal an abstinence-until-marriage pledge, originating in 1990s US evangelical True Love Waits and Silver Ring Thing movements, with peer-reviewed research questioning pledge effectiveness.
Purity Ring (band)
Purity Ring: Canadian electronic pop duo from Edmonton (formed 2010) of vocalist Megan James and producer Corin Roddick; albums Shrines, Another Eternity, Womb, and self-titled Purity Ring (2025) on The Fellowship; known for pitched vocals, hip-hop-derived production, and witch house affiliations.
Puriyatha Puthir
Puriyatha Puthir (Puriyaadha Pudhir, புரியாத புதிர்), formerly titled Mellisai, is a 2017 Tamil psychological thriller directed by debutant Ranjit Jeyakodi, starring Vijay Sethupathi and Gayathrie in a cyber-voyeurism plot, released 1 September 2017.
Purkinje cell
Purkinje cell: large GABAergic neuron of the cerebellar cortex, discovered by Jan Evangelista Purkyně in 1837; sole output of cerebellar cortex, inhibiting deep cerebellar nuclei and mediating motor learning plasticity.
Purkinje cell protein 2
Purkinje cell protein 2 (PCP2), also known as L7, is a human and mouse gene expressed almost exclusively in cerebellar Purkinje cells and retinal bipolar neurons.
Purkinje fibers
Purkinje fibers: specialized glycogen-rich cardiac muscle cells forming the terminal subendocardial network of the heart's conduction system, discovered by Jan Evangelista Purkinje in 1839 in sheep, conducting at 2–3 m/s and acting as backup ventricular pacemaker.