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Puuc style
The Puuc style is a style of ancient Maya architecture from the Puuc hills of Yucatán, Mexico, known for stone-mosaic facades decorated with masks of the rain god Chaac.
Puukko
A puukko is a Finnish belt-carried sheath knife with a short blade and a wooden handle without a guard, used for carving, hunting, and everyday tasks since the Middle Ages.
Puyang Longfeng power station
Puyang Longfeng power station (濮阳市热电厂) is a 1,200 MW coal-fired power and heat station on Huagong Road in Puyang, Henan, China, owned by Henan Investment Group.
PV Tech
PV Tech is a trade publication covering the global solar photovoltaic supply chain, launched in 2009 by London-based Solar Media Limited and known for its PV ModuleTech Bankability Ratings.
PX4
PX4 is an open source flight control software, or autopilot, for drones and other unmanned vehicles, hosted by the Dronecode Foundation under a BSD license.
PX4 Autopilot
PX4 Autopilot is an open-source autopilot software stack for drones and other unmanned vehicles, from multicopters to rovers, begun at ETH Zurich in 2008 and hosted by the Dronecode Foundation.
Pyakyakhinskoye Oil and Gas Field
The Pyakyakhinskoye field is an oil and gas condensate field in the Yamal-Nenets Autonomous District of northern West Siberia, Russia, operated by LUKOIL and producing since 2016.
PyBullet
PyBullet is a free, open-source Python interface to the Bullet real-time physics simulation engine, used in robotics research for reinforcement learning, manipulation, and locomotion, with physics, collision detection, and inverse kinematics in one installable module.
PyCharm
PyCharm is a Python integrated development environment developed by JetBrains on the IntelliJ platform, first released October 13, 2010 with Django support and an integrated debugger.
Pydantic
Pydantic is an open-source Python library for data validation and settings management, created by Samuel Colvin in 2017, with over 10 billion downloads and close ties to FastAPI.
PyDy
PyDy, short for Python Dynamics, is an open-source Python tool kit for multibody dynamics that generates symbolic equations of motion with SymPy and simulates them numerically.
PyEMMA
PyEMMA (Emma's Markov Model Algorithms) is an open source Python/C package for estimating, validating, and analyzing Markov state models from molecular dynamics simulations, developed at Freie Universität Berlin.
Pyeongtaek power station
Pyeongtaek power station (평택화력발전소) is an 871 MW natural gas-fired power station in Pyeongtaek, South Korea, owned by Korea Western Power; it opened as an oil-fired plant in 1980.
Pygame
Pygame is a Python extension library wrapping the SDL library, providing cross-platform tools for writing games and other multimedia applications in Python; Pete Shinners began it in October 2000.
PygmalionAI
PygmalionAI is an open-source project and company, founded in late 2022, that develops large language models for chat and role-play and a hosted chat platform.
Pykrete
Pykrete, also known as Icecrete or Pikecrete, is a composite material of frozen water and wood pulp that turns brittle ice ductile and impact resistant.
Pylint
Pylint is a static code analyzer for Python that examines source code without running it, checking for errors, enforcing coding standards, and suggesting refactoring since 2003.
PyMOL
PyMOL is a molecular visualization system for rendering and producing publication-quality images of proteins and biomolecules, created by Warren DeLano and first released in December 1999.
Pyongyang Air Base
Pyongyang Air Base, also known as Heijo Airfield (K-23), was an airfield in Pyongyang, North Korea, used by Japanese, North Korean, and American forces during the Korean War.
Pyongyang International Airport
Pyongyang International Airport (평양 순안국제공항), also called Pyongyang Sunan International Airport, is North Korea's principal international airport in Sunan District, about 22 km north of Pyongyang, and the hub of Air Koryo.
Pyotr S. Neporozhny
Pyotr S. Neporozhny, also known as Pyotr Stepanovich Neporozhny, was a Soviet power engineer who led the Ministry of Power and Electrification from 1962 to 1985.
PyQt
PyQt is a set of Python bindings for Qt, with over 1,000 classes, developed by Riverbank Computing and first released by Phil Thompson in 1998.
Pyrenees Oil and Gas Field
The Pyrenees Oil and Gas Field is a group of six offshore oil fields about 45 km northwest of Exmouth, Western Australia, producing since 2010.
PyRIT
PyRIT (Python Risk Identification Toolkit for generative AI) is an open-source Python framework from Microsoft for automating red-teaming of generative AI systems, released publicly in 2024.
Pyrmont Bridge
Pyrmont Bridge is an electric swing bridge of 1902 crossing Darling Harbour in Sydney, designed by Percy Allan and one of the world's oldest surviving electrically operated swing bridges.
Pyrochlore structure
The pyrochlore structure is a cubic crystal structure of formula A₂B₂O₇, an ordered superstructure of fluorite underlying oxides studied for frustrated magnetism, catalysis, ionic conduction, and nuclear waste immobilization.
Pyroelectric energy harvesting
Pyroelectric energy harvesting converts time-varying temperature into electricity using pyroelectric materials whose polarization changes with temperature, suiting wearables, sensors, and low-grade waste heat below 100 °C.
Pyrolysis
Pyrolysis, also called pyrolytic decomposition, is the thermal decomposition of organic materials in the absence of oxygen, typically at 300 to 800°C, yielding char, bio-oil, and gas.
Pyrolysis of plastics
Pyrolysis of plastics is a chemical recycling process that heats plastic waste without oxygen, breaking it down into oil, gases, and char usable as fuels or feedstocks.
Pyrolysis oil
Pyrolysis oil, also called bio-oil or py-oil, is the dark brown liquid made by heating biomass or waste without oxygen, used as burner fuel or upgraded into transportation fuels.