This article is about the physical sciences concept. For the computing concept, see Closed source software.
A closed system is a natural physical system that does not allow transfer of matter in or out of the system, although – in the contexts of physics, chemistry, engineering, etc. – the transfer of energy (e.g. as work or heat) is allowed.
A closedsystem is a natural physical system that does not allow transfer of matter in or out of the system, although – in the contexts of physics, chemistry...
Closed ecological systems or contained ecological systems (CES) are ecosystems that do not rely on matter exchange with any part outside the system. The...
the environment, a thermodynamic system may be an isolated system, a closedsystem, or an open system. An isolated system does not exchange matter or energy...
A physical system is a collection of physical objects under study. The collection differs from a set: all the objects must coexist and have some physical...
matter into or out of the system. For such considerations, thermodynamics also defines the concept of open systems, closedsystems, and other types. The first...
defined systems in terms of conceptual, concrete, and abstract systems, either isolated, closed, or open. Walter F. Buckley defined systems in sociology...
controller Closed ecological systemClosed-loop communication Ecological sanitation systems or ecosan Circular economy, with materials recycled Closed time...
A closedsystem drug transfer device or "CSTD" is a drug transfer device that mechanically prohibits the transfer of environmental contaminants into a...
join with venules (small veins), and other veins. The circulatory system is closed in vertebrates, which means that the blood never leaves the network...
advantages over open cantilevered wings, closed wing surfaces have some unique aerodynamic properties: For a lifting system constrained to fit within a rectangular...
performance of the member teams. A closed league is the opposite of leagues with promotion and relegation systems (often referred to as open leagues)...
"Lympha". Unlike the circulatory system that is a closedsystem, the lymphatic system is open. The human circulatory system processes an average of 20 litres...
even in situations in which the system is not homogeneous. For these cases the change in internal energy of a closedsystem is expressed in a general form...
A closed platform, walled garden, or closed ecosystem is a software system wherein the carrier or service provider has control over applications, content...
called a closedsystem, being enclosed by selective walls through which energy can pass as heat or work, but not matter; and with an open system, which...
an open system interacting with external fields; but a reactionless drive is a particular case of a propellantless drive that is a closedsystem, presumably...
a dynamic system inclined to moral universalism. Bergson contrasted an open society with what he called a closed society, a closedsystem of law, morality...
area (watts per square metre). In 1856, Rudolf Clausius, referring to closedsystems, in which transfers of matter do not occur, defined the second fundamental...
definition of the internal energy of a thermodynamic system, and expresses its change for a closedsystem in terms of work and heat. It can be linked to the...
in any inertial frame it is a conserved quantity, meaning that if a closedsystem is not affected by external forces, its total linear momentum does not...
pressure-volume work, that may be performed by a thermodynamically closedsystem at constant temperature and pressure. It also provides a necessary condition...
political debate to refer to the claim that political belief systems can be closedsystems of deduction, unaffected by empirical evidence. This use of...
(closed system, no transfer of matter) . {\displaystyle \Delta U=Q-W\quad {\text{(closedsystem, no transfer of matter)}}.} When a closedsystem receives...
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