countercurrent system

См. также в других словарях:

• countercurrent — 1. Flowing in an opposite direction. 2. A current flowing in a direction opposite to another current. * * * coun·ter·cur·rent kau̇nt ər .kər ənt, .kə rənt n a current flowing in a direction opposite that of another current countercurrent .kau̇nt… …   Medical dictionary

• Countercurrent chromatography — (CCC) or partition chromatography is a category of chromatography techniques;[1] laboratory techniques for the separation of mixtures, in this case liquid liquid mixtures. Contents 1 Chromatography 2 Techniques …   Wikipedia

• Countercurrent exchange — Counter heat current exchange: Note the gradually declining differential and that the once hot and cold streams exit at the reversed temperature difference; the hotter entering stream becomes the exiting cooler stream and vice versa.… …   Wikipedia

• Countercurrent multiplication — A countercurrent multiplier system is a mechanism that expends energy to create a concentration gradient. It is found widely in nature and especially in mamalian organs. For example, it can refer to the process underlying the process of urine… …   Wikipedia

• countercurrent multiplier — A system in which energy is used to transport material across a membrane separating two c. tubes connected at one end to form a hairpin shape; by this means a concentration can be achieved in the fluid in the hairpin bend, relative to the inflow… …   Medical dictionary

• countercurrent exchanger — A system in which heat or chemicals passively diffuse across a membrane separating two c. streams so that at each end the fluid leaving along one side of the membrane nearly resembles, in temperature or composition, the fluid entering the other;… …   Medical dictionary

• Multicolumn countercurrent solvent gradient purification — (MCSGP) is a form of chromatography that is used to separate or purify biomolecules from complex mixtures. It was developed at the Swiss Federal Institute of Technology Zürich by Aumann and Morbidelli.[1] The process consists of three to six… …   Wikipedia

• renal system — ▪ anatomy Introduction  in humans (human body), organ system that includes the kidneys, where urine is produced, and the ureters, bladder, and urethra for the passage, storage, and voiding of urine.       In many respects the human excretory, or… …   Universalium

• renal system disease — Introduction  any of the diseases or disorders that affect the human excretory system. They include benign and malignant tumours, infections and inflammations, and obstruction by calculi.       Diseases can have an impact on the elimination of… …   Universalium

• Low-temperature thermal desorption — NOTE: This article is largely taken verbatim from the EPA s How to Evaluate Alternative Cleanup Technologies for Underground Storage Tank Sites . cite web last = first = authorlink = coauthors = date = url = http://www.epa.gov/OUST/cat/lttd.htm… …   Wikipedia

• lentiform body — a countercurrent system of afferent capillaries interspaced with irregular efferent sinusoids concerned with the elevation of oxygen tensions in the eyes of some teleosts, e.g. Fundulus grandis …   Dictionary of ichthyology