Circulation
Encyclopedia
Circulation may refer to:
- Circulatory systemCirculatory systemThe circulatory system is an organ system that passes nutrients , gases, hormones, blood cells, etc...
, a biological organ system whose primary function is to move substances to and from cells - Circulation (fluid dynamics), the path integral of the fluid velocity around a closed curve
- Circulation (journal)Circulation (journal)Circulation is a scientific journal published by Lippincott Williams & Wilkins for the American Heart Association. The journal publishes articles related to research in and the practice of cardiovascular diseases, including observational studies, clinical trials, epidemiology, health services and...
, one of the journals published by American Heart Association - Circulation (architecture)Circulation (architecture)In the field of architecture, circulation refers to the way people move through and interact with a building. In public buildings, circulation is of high importance; for example, in buildings such as museums, it is key to have a floor plan that allows continuous movement while minimizing the...
, the flow of people through a building - Exhaust gas recirculationExhaust gas recirculationIn internal combustion engines, exhaust gas recirculation is a nitrogen oxide emissions reduction technique used in petrol/gasoline and diesel engines. EGR works by recirculating a portion of an engine's exhaust gas back to the engine cylinders. In a gasoline engine, this inert exhaust...
, a nitrogen oxide reduction technique used in most gasoline and diesel engines - Atmospheric circulationAtmospheric circulationAtmospheric circulation is the large-scale movement of air, and the means by which thermal energy is distributed on the surface of the Earth....
, the large-scale movement of air - Newspaper circulationNewspaper circulationA newspaper's circulation is the number of copies it distributes on an average day. Circulation is one of the principal factors used to set advertising rates. Circulation is not always the same as copies sold, often called paid circulation, since some newspapers are distributed without cost to the...
, the average number of copies of a newspaper distributed on a day - Magazine circulation, the average number of copies of a periodical distributed per edition/ volume
- Circulation (UK duo), a UK house music duo
- Circulation problemCirculation problemThe circulation problem and its variants is a generalisation of network flow problems, with the added constraint of a lower bound on edge flows, and with flow conservation also being required for the source and sink...
, a generalization of network flow problems - Library circulationLibrary circulationLibrary circulation or library lending comprises the activities around the lending of library books and other material to users of a lending library. A circulation or lending department is one of the key departments of a library....
, the activities around the lending of library books and other material to users of a lending library - Circulation (currency)Circulation (currency)The social system in which we live has usually developed to the stage for money to be used as the medium for the exchange of goods and services. Hence the money is an important aspect of the general social or macroeconomics system...
, all currency held by consumers and businesses, but not by financial institutions and governments - Circulation Festival, an annual circusCircusA circus is commonly a travelling company of performers that may include clowns, acrobats, trained animals, trapeze acts, musicians, hoopers, tightrope walkers, jugglers, unicyclists and other stunt-oriented artists...
and fire performanceFire dancingFire dancing is a group of performance arts or disciplines that involve manipulation of objects on fire...
festival held in DunedinDunedinDunedin is the second-largest city in the South Island of New Zealand, and the principal city of the Otago Region. It is considered to be one of the four main urban centres of New Zealand for historic, cultural, and geographic reasons. Dunedin was the largest city by territorial land area until...
, New Zealand