Check Point (צ'ק פוינט)
Check Point (צ'ק פוינט), formally Check Point Software Technologies Ltd., is an Israeli cybersecurity company founded in 1993 by Gil Shwed, best known for pioneering the stateful inspection firewall.
Check sheet
A check sheet is a structured form for recording data in real time with tally marks, one of the seven basic quality tools highlighted by Kaoru Ishikawa.
Check valve
A check valve, also known as a non-return valve, is a two-port mechanism that automatically permits fluid flow in one direction, preventing reverse flow and limiting pressure surges.
Checkbox
A checkbox, also called a tickbox, is a graphical interface control that switches an option between checked and unchecked states, defined in HTML as the input element with type checkbox.
Checkers and Rally's
Checkers and Rally's, also known as Rally's Hamburgers and Checkers Drive-In, are sister American drive-thru hamburger chains that merged in 1999, headquartered in Tampa, Florida.
Checklist
A checklist is an ordered list used to verify required actions, developed in aviation after the 1935 Boeing Model 299 crash and now used in surgery and other high-hazard work.
Checkpoint/restore
Checkpoint/restore is an operating-system technique that saves a running process's complete state to image files and later reconstructs it, resuming execution where it left off.
Checkpointing
Checkpointing is the practice of periodically saving a program's state so that after a failure it can restart from the last saved point rather than from the beginning.
Checksum
A checksum is a value computed from a data object's contents and stored or transmitted with it, so that changes to the data can be detected.
Cheddi Jagan International Airport
Cheddi Jagan International Airport, formerly Timehri Airport and originally the 1941 Atkinson Field, is Guyana's main international airport at Timehri, about 39 km south of Georgetown, named after President Cheddi Jagan.
Cheerios
Cheerios, originally sold as CheeriOats when it debuted in 1941, is a toasted whole-grain oat breakfast cereal made by General Mills, whose Honey Nut variety is the bestselling cereal brand in the United States.
Cheget (Чегет)
Cheget (Чегет), Russia's "nuclear briefcase," is the portable terminal of the Kazbek command system, held by the president, defense minister, and chief of the General Staff since 1983.
Chegg
Chegg, Inc. is an American education technology company based in San Francisco, founded in 2005 as a textbook rental service and later offering homework help subscriptions.
Cheiron Petroleum Corp
Cheiron Petroleum Corp is a privately held Egyptian independent oil and gas company, formerly PICO International Petroleum, that revitalizes mature fields in Egypt, Mexico, and Romania.
Chelyabinsk-Petrovsk Gas Pipeline
Owned by Gazprom, the Chelyabinsk-Petrovsk Gas Pipeline (Газопровод) is a Russian trunk line that transports gas from Chelyabinsk to Petrovsk, serving central Russia and Eastern Europe.
Chematica
Chematica is a computer-aided synthesis planning platform that works backward from a target molecule to available starting materials, a process called retrosynthesis. Developed by Bartosz Grzybowski's group from around 2001, it was commercialized as Synthia.
ChemBERTa
ChemBERTa is a family of transformer language models that treat SMILES molecular strings as text, introduced in 2020 within the DeepChem project for property prediction tasks.
ChEMBL
ChEMBL is a manually curated database of bioactive, drug-like small molecules, with 2-D structures, calculated properties, and bioactivity data, maintained at EMBL-EBI and first released in 2009.
ChemCam
ChemCam, short for Chemistry and Camera, is an instrument on NASA's Curiosity rover that uses laser-induced breakdown spectroscopy to determine the composition of Martian rocks and soils.
ChemCrow
ChemCrow is an open-source large-language-model chemistry agent, introduced in 2023, that pairs language-model reasoning with expert chemistry tools; it autonomously planned syntheses of an insect repellent and organocatalysts.
ChemDataExtractor
ChemDataExtractor is a Python toolkit using natural language processing and machine learning to extract chemical information from scientific papers, created by Matt Swain and used to auto-generate materials property databases.
ChemDataExtractor 2.0
ChemDataExtractor 2.0 is an open-source, chemistry-aware text-mining toolkit developed at the University of Cambridge that automatically extracts chemical names, property values, and units from journal articles to populate materials-science databases.
ChemDraw
ChemDraw is a chemical structure drawing program used to create publication-ready depictions of molecules and reactions, first demonstrated in 1985 and now owned by Revvity Signals, with wide use in research, publishing, and chemistry education.
Chemical engineering
Chemical engineering is the branch of engineering that applies chemistry, physics, and mathematics to turn raw materials into products like fuels, medicines, and plastics at industrial scale.
Chemical industry
The chemical industry converts oil, gas, minerals, and biomass into chemicals and polymers, one of the world's largest industrial sectors with about USD 5,681 billion in 2017 sales.
Chemical language model
A chemical language model (CLM) is a neural sequence model that treats molecular structures as text strings, used in drug discovery for property prediction, virtual screening, and molecule generation.
Chemical looping partial oxidation
Chemical looping partial oxidation (CLPO) is a fuel-conversion process in which a metal oxide oxygen carrier partially oxidizes methane or biomass into synthesis gas, then regenerates with air in a separate step.
Chemical looping reforming
Chemical looping reforming (CLR) is a process that converts methane or other fuels into synthesis gas using a circulating metal oxide oxygen carrier, enabling inherent CO2 capture.
Chemical Markup Language
Chemical Markup Language (CML) is an XML vocabulary for representing chemical information, including molecules, reactions, and spectra. It was created by Peter Murray-Rust and Henry Rzepa in the mid-1990s.
Chemical milling
Chemical milling, also called chem milling, is a manufacturing process that removes metal by controlled chemical dissolution rather than cutting, making it useful for thinning parts and machining hard alloys.