Medical dictionary. 2011.
closed-open circulation theory — the theory that both an open and a closed circulation are present in the spleen; e.g., a closed circulation in a contracted spleen may become an open circulation when the organ is distended. Cf. closed circulation t. and open circulation t … Medical dictionary
open-closed circulation theory — see closed open circulation t … Medical dictionary
slow circulation theory — open circulation t … Medical dictionary
closed circulation theory — one of the theories explaining how the blood in the spleen gets from the arteries to the venous sinuses; it holds that the capillaries empty directly into the venous sinuses. Cf. open circulation t. and closed open circulation t. Called also fast … Medical dictionary
Open and closed systems in social science — Ludwig Bertalanffy describes two types of systems: open systems and closed systems. The open systems are systems that allow interactions between its internal elements and the environment. An open system is defined as a “system in exchange of… … Wikipedia
Circulation of elite — The Circulation of elite is a theory of regime change described by Italian social scientist Vilfredo Pareto (1848–1923). Changes of regime, revolutions, and so on occur not when rulers are overthrown from below, but when one elite replaces… … Wikipedia
Closed system (control theory) — The terms closed system and open system have long been defined in the widely (and long before any sort of amplifier was invented) established subject of thermodynamics, in terms that have nothing to do with the concepts of feedback and… … Wikipedia
New World Order (conspiracy theory) — This article is about the use of the term New World Order in conspiracy theory. For other uses, see New World Order. The reverse side of the Grea … Wikipedia
Thermohaline circulation — A summary of the path of the thermohaline circulation/ Great Ocean Conveyor. Blue paths represent deep water currents, while red paths represent surface currents The term thermohaline circulation (THC) refers to a part of the large scale ocean… … Wikipedia
Shutdown of thermohaline circulation — Shutdown or slowdown of the thermohaline circulation is a postulated effect of global warming.There is some speculation that global warming could, via a shutdown or slowdown of the thermohaline circulation, trigger localized cooling in the North… … Wikipedia
