Medical dictionary. 2011.
open-closed circulation theory — see closed open circulation t … Medical dictionary
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
fast circulation theory — closed circulation t … Medical dictionary
open 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 open directly into the pulp reticulum, and that the blood gradually filters back into the venous sinuses.… … Medical dictionary
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
Atmospheric circulation — is the large scale movement of air, and the means (together with the smaller ocean circulation) by which heat is distributed on the surface of the Earth. The large scale structure of the atmospheric circulation varies from year to year, but the… … Wikipedia
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
Defensible space theory — The defensible space theory of architect and city planner Oscar Newman encompasses ideas about crime prevention and neighborhood safety. The theory developed in the early 1970s, and he wrote his first book on the topic, Defensible Space in 1972.… … Wikipedia
Timeline of Islamic science and engineering — This timeline of Islamic science and engineering covers the general development of science and technology in the Islamic world during the Islamic Golden Age, usually dated from the 7th to 16th centuries.From the 17th century onwards, the advances … Wikipedia
china — /chuy neuh/, n. 1. a translucent ceramic material, biscuit fired at a high temperature, its glaze fired at a low temperature. 2. any porcelain ware. 3. plates, cups, saucers, etc., collectively. 4. figurines made of porcelain or ceramic material … Universalium
