All articles starting with P
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Pulkovo Airport
Pulkovo Airport (Пулково, LED/ULLI) is Saint Petersburg's international airport, founded 24 June 1932, with two runways, 20.9 million annual passengers, and 107 destinations in summer 2025.
Pulkovo Observatory (Пулковская обсерватория)
Pulkovo Observatory (Пулковская обсерватория), the Main Astronomical Observatory of the Russian Academy of Sciences near Saint Petersburg, opened 1839 under Vasily Struve; famed for FK star catalogs, destroyed in WWII, restored 1954, UNESCO-listed since 1990.
Pull Strings (师兄太稳健)
Pull Strings (师兄太稳健, alt. 我师兄实在太稳健了) is a 2026 Youku/iQiyi xianxia light comedy, 30 episodes, adapted from Yan Gui Zheng Zhuan's 'steady stream' novel, starring Ao Ruipeng as Li Changshou; Douban 5.7.
Pull-apart basin
A pull-apart basin is a structural depression formed by localized crustal extension at a releasing bend or stepover in a strike-slip fault system, named in 1966, with the Dead Sea basin among the largest.
Pull-off force
Pull-off force is the maximum tensile force required to separate two adhering bodies, such as an AFM tip and a surface or a coating from its substrate.
Pull-out test
A pull-out test measures the force required to pull an embedded metal insert with attached concrete out of a structure, estimating in-place compressive strength under ASTM C900.
Pull-up resistor
A pull-up resistor is a resistor connected between a digital signal line and the positive supply voltage that holds the line high when nothing drives it.
Pullak Technology (卜拉格科技)
Pullak Technology (卜拉格科技) is an early-stage AI laboratory in Shanghai founded in 2026 by Lin Junyang, former Qwen lead at Alibaba, researching world models and embodied AI.
Pullareddigudem (Andhra Pradesh 58)
Pullareddigudem (Andhra Pradesh 58) is an ASI centrally protected ancient mound with sculptures, carvings, images, and bas-relief, serial 58, Amaravati Circle, near Nagarjunakonda in Palnadu district, Andhra Pradesh.
Pullareddigudem (Andhra Pradesh 59)
Pullareddigudem, a village in Macherla Mandal, Guntur (Palnadu), Andhra Pradesh, is the revenue village under which the Nagarjunakonda Buddhist site was notified; ASI monument serial 59 covers its mounds and the Hill of Nagarjunakonda.
Pullback (category theory)
A pullback, also called the fibered product, is the limit in category theory of two morphisms with a common codomain; in sets it is the set of pairs (a, b) with f(a) = g(b).
Pulle
Pulle is an Austrian four-player block domino game using 36 tiles from a double-eight set; players pay into a pool, accumulate pip penalty points, and the last player under 101 wins the pot.
Pullela Gopichand
Pullela Gopichand, born 1973, is an Indian badminton chief national coach and 2001 All England champion, the second Indian winner after Prakash Padukone, who founded the Hyderabad academy that trained Saina Nehwal and PV Sindhu.
Pullen Island
Pullen Island: ice-covered Antarctic island in Violante Inlet, Black Coast, Palmer Land, on the landward side of Larsen Ice Shelf; named for William A. Pullen, USN; distinct from Islote Pullen, Chile.
Pulley
A pulley is a simple machine consisting of a grooved wheel over which a rope, cable, or belt passes, changing the direction of force; combined pulleys multiply it.
Pullman Company
The Pullman Company, founded as the Pullman Palace Car Company by George Pullman in 1867, built luxurious sleeping cars and operated them on railroads across North America.
Pullman porter
A Pullman porter, also called a sleeping car porter, was a Black worker who served passengers on Pullman's luxury sleeping cars from 1867 until the early 1970s.
Pullman Strike
The Pullman Strike, or Pullman Railroad Strike, was an 1894 nationwide railroad strike and boycott in the United States led by Eugene Debs' American Railway Union.
Pullman, Washington
Pullman, Washington: largest city in Whitman County and home of Washington State University's main campus, incorporated 1888, population about 33,756 (2025 estimate), set in the Palouse's four-hill college town.
Pullorum disease
Pullorum disease, or bacillary white diarrhea, is a septicaemic Salmonella Pullorum infection of young chicks transmitted via the egg; eradicated from US commercial poultry through the NPIP by 1967.
Pullout test
A pullout test measures the force required to pull an embedded metal insert and a fragment of concrete from a concrete member, estimating in-place compressive strength.
Pullulan
Pullulan is a linear, water-soluble polysaccharide produced by fermenting the fungus Aureobasidium pullulans, used in edible films, drug capsules, food packaging, and Listerine oral care strips.
Pullulanase
Pullulanase (EC 3.2.1.41) is a starch-debranching enzyme, reported by Bender and Wallenfels in 1961, that cleaves α-1,6 branch points during industrial starch saccharification and brewing.
Pully
Pully, a Vaud municipality of 19,550 people east of Lausanne on Lake Geneva, known for the Chamblandes Neolithic necropolis and the luxurious Roman villa du Prieuré with its 15.6 m chariot-race fresco, discovered in 1971 and housed in a 1981 site museum.
Pulmonaria
Pulmonaria (lungwort) is a Boraginaceae genus of about 18 perennial species native to Europe, Siberia, and N. China, with red-to-blue aging flowers, distyly, spotted leaves, and shade-garden use.
Pulmonaria officinalis
Pulmonaria officinalis, lungwort or pulmonaire officinale, is a spotted-leaved European borage-family perennial whose flowers shift from red to blue; IUCN Least Concern, long used for lung ailments.
Pulmonary actinomycosis
Pulmonary actinomycosis (ICD-10 A42.0, ICD-11 1C10.0) is a rare chronic lung infection from aspirated Actinomyces oral flora, mimicking lung cancer and tuberculosis, treated with prolonged penicillin and sometimes surgery.
Pulmonary adiaspiromycosis
Pulmonary adiaspiromycosis, also called haplomycosis or Emmonsia crescens infection, is a rare granulomatous lung infection from inhaled soil-fungus spores that swell into non-replicating 40–500 μm adiaspores; common in rodents, rare in humans, usually self-limiting.
Pulmonary agenesis
Pulmonary agenesis (congenital absence of lung, ORPHA:984) is a rare malformation with complete absence of a lung, bronchus, and pulmonary artery; bilateral disease is lethal, unilateral survival about 62% at 2 years.
Pulmonary alveolar proteinosis
Pulmonary alveolar proteinosis (PAP), a rare lung disease with surfactant accumulation in alveoli; forms include autoimmune (GM-CSF autoantibody) PAP; treated with whole lung lavage and inhaled GM-CSF.