countercurrent

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Related to Counter-current: Countercurrent exchange system

countercurrent

 [kown´ter-ker″ent]
flowing in an opposite direction.

count·er·cur·rent

(kown'ter-ker'ent),
1. Flowing in an opposite direction.
2. A current flowing in a direction opposite to another current.

countercurrent

/coun·ter·cur·rent/ (-kur″ent) flowing in an opposite direction.

countercurrent

a change in the direction of flow of a fluid. An example is the countercurrent in the ascending branch of a kidney tubule where osmolality undergoes a reversal after a gradual change in sodium chloride concentrations.

countercurrent

flowing in an opposite direction.

countercurrent exchanger
a countercurrent system in which transport between the inflow and the outflow is passive.
countercurrent multiplier
a mechanism that enables a membrane to absorb much more solute than water so that the residual fluid has a lower osmotic pressure. The classical example of this phenomenon is the loop of Henle in the kidney. Called also countercurrent multiplier mechanism or system.
References in periodicals archive ?
High-speed counter-current chromatography coupled online to high performance liquid chromatography-diode array detector-mass spectrometry for purification, analysis and identification of target compounds from natural products.
Results for tested liquid-plate material combination showed that area of dry surface and mass transfer coefficient changes abruptly when counter-current air flow is introduced.
The operations of counter-current flow are given as under:
In the case of counter-current moving, overheating of condensed heavy shale oil at the temperature 340[degrees]C takes place, which leads to its intensive polymerization in the piping of the air cooler-condenser.
Since a positive bias is assumed in the column, the net liquid flow is counter-current to the rising bed of bubbles.
Gas from the landfill first enters a counter-current flow, "mobile-bed" absorber column.
Co-current design avoids dew-point blips that result from counter-current systems.
He argues that it fails to take account of a counter-current, given a contemporaneous scientific formulation by Auguste Cournot, but initiated as much by the novelists as by the scientists, which stresses chance and disorder as the fundamental principle of existence.
Amdel's recently introduced Thickener Interface Gauge (TIG) provides continuous on-line measurement of the level of the liquid/solid interface in thickeners and counter-current decantation (CCD) washers.
Permutit's refurbishment business falls into four main areas of activity: conversion of co-flow ion-exchange columns to counter-current flow (CCR); conversion of plant to alternative use; automation of plant; and upgrading of plant.
An eddy is a current of water running contrary to the main current - and the CamelBak eddy will act as a counter-current to help eliminate single-use plastic bottles from the planet.
For air conditioning, A combined supply and discharge extractor with heat recovery by means of counter-current plate exchanger.