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Ordos-Anping-Cangzhou Gas Pipeline
The Ordos-Anping-Cangzhou Gas Pipeline (鄂安沧输气管道) is a Sinopec natural gas transmission system in northern China, 2,293 kilometers long with a capacity of 30 billion cubic meters per year, first commissioned in November 2018.
Ordre des ingénieurs du Québec
The Ordre des ingénieurs du Québec (OIQ) is the professional order that regulates the practice of engineering in Quebec. Founded in 1920, it counts more than 80,000 members, over 20 percent of Canada's engineers.
Oredo gas field
The Oredo gas field is an onshore oil and gas field near Benin City, Edo State, Nigeria, the first onshore field developed by NNPC's subsidiary NPDC in 1996.
Oregon Department of Transportation
The Oregon Department of Transportation (ODOT) is the state agency responsible for highways, driver licensing, transit, and rail, founded in 1913 and headquartered in Salem.
Oregon State Capitol
The Oregon State Capitol is the statehouse of Oregon in Salem, housing the legislature and governor's offices; the third capitol there, it was completed in 1938.
Orekhovo-Yermakovskoye Oil Asset
Orekhovo-Yermakovskoye field (Орехово-Ермаковское месторождение) is a mature, low-permeability oil field in West Siberia, 33 km northeast of Nizhnevartovsk, revived since 2016 by horizontal drilling, multistage fracturing, and gel-based enhanced oil recovery.
Orenburg-Novopskov Gas Pipeline
The Orenburg-Novopskov Gas Pipeline is a 1,230 km gas pipeline built in the 1970s, running from Orenburg, Russia through Kazakhstan to Novopskov, Ukraine, owned by Gazprom and QazaqGaz.
Orenstein & Koppel
Orenstein & Koppel (O&K) was a German engineering company founded in Berlin in 1876 that became one of Germany's largest locomotive builders and later made excavators.
Ores (utility)
ORES (Opérateur de Réseaux d'Energies) is a Belgian utility that manages electricity, natural gas, and public lighting networks across about 75 percent of Wallonia's municipalities, serving roughly 1.5 million customers.
Oreshnik (missile)
The Oreshnik (Russian for "hazel tree") is a Russian road-mobile, solid-fueled intermediate-range ballistic missile with MIRV capability, first fired in combat against Ukraine in November 2024.
Øresund Bridge
The Øresund Bridge (Öresundsbron) is a combined railway and motorway link across the Øresund strait between Copenhagen, Denmark, and Malmö, Sweden, opened on July 1, 2000.
Organic architecture
Organic architecture is a philosophy of building, first named by Frank Lloyd Wright in 1914, that designs structures as one with their site, materials, and inhabitants, exemplified by Fallingwater.
Organic artificial afferent nerve
An organic artificial afferent nerve is a flexible organic semiconductor device that mimics a biological afferent nerve, sensing pressure and processing touch signals for robotics and prosthetics.
Organic carbonyl cathodes
Organic carbonyl cathodes are battery electrodes built from carbonyl compounds, such as quinones, that store charge for lithium, sodium, and potassium cells with high capacity and renewability.
Organic chemical vapor deposition
Organic chemical vapor deposition (OVPD) is a thin-film deposition method that grows organic semiconductor films for OLEDs by evaporating material into a hot inert carrier gas.
Organic electrochemical neuron
An organic electrochemical neuron (OECN) is an artificial neuron built from organic electrochemical transistors that spike through ion-mediated dynamics like biological neurons, first proposed in 2022 for neuromorphic sensing and bioelectronic systems.
Organic electrochemical transistor
An organic electrochemical transistor is a three-terminal device in which ions from an electrolyte modulate an organic polymer channel, first demonstrated in 1984 and now used for biosensing and neuromorphic computing.
Organic electrochemical transistor artificial synapse
An organic electrochemical transistor artificial synapse is a three-terminal device that mimics synaptic functions like potentiation, depression, and plasticity, using ions from an electrolyte to tune a PEDOT:PSS channel.
Organic ferroelectric memory
Organic ferroelectric memory is non-volatile data storage in which an organic ferroelectric material, typically the fluoropolymer P(VDF-TrFE), holds the data state in reversible electric polarization.
Organic field-effect transistor
An organic field-effect transistor (OFET) is a three-terminal transistor with a channel made of an organic semiconductor, valued for flexibility in flexible displays, smart cards, and sensors.
Organic flow battery
An organic flow battery is a redox flow battery storing energy in carbon-based organic molecules instead of metal ions, promising cheaper, tunable chemistry than vanadium systems.
Organic neuromorphic devices
Organic neuromorphic devices are carbon-based hardware emulating neurons and synapses, integrating memory and processing to overcome the von Neumann bottleneck for low-power, flexible, biocompatible computing.
Organic NIR photodetector
An organic near-infrared (NIR) photodetector is a light sensor whose photoactive layer is carbon-based, converting NIR photons into electrical current. It is pursued for flexible, solution-processed devices for sensing, health monitoring, and night vision.
Organic photodetector
An organic photodetector (OPD) is a light-sensing device that uses organic semiconductors to convert light into electrical signals, detecting wavelengths from the visible into the infrared.
Organic radical battery
An organic radical battery (ORB) is a rechargeable battery that uses nitroxide radical polymers such as PTMA instead of lithium-ion intercalation, allowing very fast charging.
Organic Rankine cycle
The Organic Rankine cycle (ORC) converts heat into power using an organic fluid with a lower boiling point than water, suited to sources from 80 to 300 °C.
Organic semiconducting single-crystal arrays
Organic semiconducting single-crystal arrays are ordered, position-controlled arrangements of organic semiconductor single crystals on one substrate, enabling uniform transistor arrays for flexible displays, wearables, sensors, and organic integrated circuits.
Organic semiconductor laser diode
An organic semiconductor laser diode is a laser diode whose light-emitting medium is an organic semiconductor, driven by electric current rather than an external optical pump.
Organic solar cell
An organic solar cell, also called an organic photovoltaic (OPV) device, is a solar cell that converts light to electricity using carbon-based semiconductors, with certified efficiencies now above 20%.
Organic spin valve
An organic spin valve is a spintronic device in which an organic semiconductor layer sits between two ferromagnetic electrodes, so their magnetic alignment changes the device's resistance.