61,984 articles
Oyster Creek Nuclear Generating Station
Oyster Creek Nuclear Generating Station was a boiling water reactor at Forked River, New Jersey, that operated from 1969 to 2018 and was the oldest operating commercial nuclear plant in the United States.
Oyu Tolgoi Investment Agreement
The Oyu Tolgoi Investment Agreement is a 30-year contract signed in 2009 between Mongolia, Ivanhoe Mines, and Rio Tinto for the Oyu Tolgoi copper and gold mine.
Oyu Tolgoi underground
The Oyu Tolgoi underground is a block-caving copper mine beneath the Oyu Tolgoi open pit in Mongolia's South Gobi Desert, which began production in March 2023.
Ozen-Zhetybay-Aktau Oil Pipeline
The Ozen-Zhetybay-Aktau Oil Pipeline is a heated crude oil pipeline in Kazakhstan, opened in 1966 to link the Uzen and Zhetybay oil fields with the Caspian port of Aktau.
Ozenmunaigas
Ozenmunaigas (Kazakh: Өзенмұнайгаз) is a Kazakhstani oil and gas production company wholly owned by KazMunayGas, which develops the Uzen and Karamandybas fields and produced about 5 million tonnes of oil in 2024.
Ozobot
Ozobot is a line of small educational robots made by a California company, teaching children to program by following hand-drawn lines and color-based commands on paper.
Ozonation
Ozonation is a water treatment process that dissolves ozone into water to inactivate pathogens and oxidize contaminants; used in drinking water since 1893, notably at Nice, France.
P L Bartow power station
P L Bartow power station, also called the Bartow Combined Cycle Station, is a natural gas-fired plant owned by Duke Energy Florida on Weedon Island, St. Petersburg, Florida.
P system
A P system, or membrane system, is a parallel computing model abstracting a living cell, introduced by Gheorghe Păun in 1998; many classes are computationally universal.
P-15 Termit (П-15 «Термит»)
The P-15 Termit (П-15 «Термит», NATO reporting name SS-N-2 Styx) is a Soviet sea-skimming anti-ship cruise missile developed by Raduga and adopted by the Soviet Navy in 1960.
P-270 Moskit
The P-270 Moskit (П-270 «Москит»), known in the West as the SS-N-22 "Sunburn", is a Soviet supersonic ramjet anti-ship cruise missile developed by MKB Raduga and in service since 1984.
P-38 can opener
The P-38 can opener, nicknamed the John Wayne by Marines, is a small folding can opener invented in 1942 and issued with Army field rations through the 1980s.
P-500 Bazalt
The P-500 Bazalt (П-500 «Базальт»), NATO name SS-N-12 Sandbox, is a Soviet supersonic anti-ship cruise missile developed by Chelomey's bureau, operational since 1975, and still carried by Russian Navy warships.
P-700 Granit
The P-700 Granit, NATO name SS-N-19 Shipwreck, is a Soviet and Russian supersonic anti-ship cruise missile that entered service in 1983 to attack carrier battle groups with coordinated salvos.
P-800 Oniks (Оникс)
The P-800 Oniks (Оникс), also called Yakhont and SS-N-26 Strobile, is a Russian supersonic anti-ship cruise missile with about 300 km range, in service since 2002.
P-code machine
A P-code machine is a hypothetical stack-based virtual machine whose P-code instruction set was created at ETH Zurich in the 1970s so Pascal compilers could emit portable intermediate code.
P-complete
A P-complete problem is a decision problem in P to which every other problem in P reduces under NC reductions; if any such problem had an efficient parallel algorithm, then NC equals P.
P-Delta effect
The P-Delta effect is a geometric nonlinearity in which gravity loads on a laterally displaced structure produce extra moments and displacements that can destabilize it.
P-tuning
P-tuning is a parameter-efficient fine-tuning method for pretrained language models, introduced by Tsinghua University researchers in 2021, where trainable continuous prompt embeddings are optimized with a prompt encoder while the model stays frozen.
P–n junction
A p–n junction is the interface between p-type and n-type regions of a semiconductor crystal, where a built-in electric field produces rectifying behavior in diodes, transistors, LEDs, and solar cells.
P. Hunter Peckham
P. Hunter Peckham is a biomedical engineer at Case Western Reserve University and National Academy of Engineering member, a pioneer of functional electrical stimulation neuroprostheses for tetraplegia.
P. Pandurang Nayak
P. Pandurang Nayak, known as Pandu Nayak, is an Indian-American computer scientist and Chief Scientist for Google Search, elected to the National Academy of Engineering in 2024.
P. Pradip
P. Pradip, born 1956, is an Indian mineral-processing and particle-technology scientist, Chief Scientist at Tata's TRDDC in Pune and a Foreign Associate of the US National Academy of Engineering.
P.V. Kokotović
P.V. Kokotović, also written Petar V. Kokotovic, born in Belgrade in 1934, is a control theorist and Professor Emeritus at UC Santa Barbara, creator of backstepping.
P(doom)
P(doom), short for probability of doom, is an informal term for one person's estimate that advanced AI causes an existential catastrophe, popular in AI-safety circles since around 2022.
P(VDF-TrFE-CTFE) electrostrictive terpolymer
P(VDF-TrFE-CTFE) is a relaxor ferroelectric terpolymer of vinylidene fluoride, trifluoroethylene, and chlorotrifluoroethylene whose electrostrictive strain, up to 9%, drives soft tactile, haptic, microfluidic, and printed actuators.
P(VDF-TrFE) ferroelectric memory
P(VDF-TrFE) ferroelectric memory is a non-volatile memory storing data in the switchable polarization of ferroelectric polymer films, promising for flexible low-cost devices like RFID tags.
P&O Cruises
P&O Cruises is a British cruise line based in Southampton, England, operated by Carnival UK and descended from the 1837 mail service that made it the oldest cruise line.
P&O Ferries
P&O Ferries is a British ferry operator owned by Dubai-based DP World, running Dover–Calais, Hull–Rotterdam, and Irish Sea routes and carrying over 10 million passengers a year.
P2-type layered oxide
A P2-type layered oxide, formula NaxTMO2, is a cathode material for sodium-ion batteries with trigonal-prismatic sodium sites between TMO2 layers, giving fast Na+ diffusion but a poorly reversible P2–O2 transition at high voltage.