passive transport

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passive transport

n.
The movement of a chemical substance across a cell membrane without expenditure of energy by the cell, as in diffusion.
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Noun1.passive transport - transport of a substance across a cell membrane by diffusion; expenditure of energy is not required
transport - an exchange of molecules (and their kinetic energy and momentum) across the boundary between adjacent layers of a fluid or across cell membranes
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References in periodicals archive ?
To that aim nanocomposite or mixed matrix membranes will be considered with particular focus on facilitated transport mechanisms promoted by carrier attached to the polymer or the filler.
In this regard, facilitated transport membranes can be proposed as promising solution to overcome the upperbound constraint due to their high permselectivity [13, 18].
Islamic Republic of Iran Shipping Lines claims it has not violated any rule or facilitated transport of consignments aimed at helping the nuclear programme, the report said.
Facilitated transport is a well-known process in which the reversible complexation reactions between solutes with carrier are carried out on the feed side, then diffuses through a liquid membrane and releases the solute on the permeate side.
FDG is a radiopharmaceutical analogue of glucose that is taken up metabolically by active tumour cells using facilitated transport unlike those used by glucose.
Topics of the 17 papers include glassy and rubbery polymers, highly permeable polymers, glassy polymers, substituted polyacetylenes, perfluoropolymers, polyimides, zeolite membranes, carbon membranes, polymer membranes for organic liquids, solid-state facilitated transport membranes for the separation of olefins/paraffins and oxygen/nitrogen, using a unified approach to membrane permeation using a solution-diffusion model, and using such methods as positron annihilation lifetime spectroscopy for free volume evaluation in polymers.
The European Commission recommended using the PHARE or TACIS programmes under heading 7 (pre-accession) to pay for the new Facilitated Transport Documents (FTD) but the Presidency of the Council and the Parliament's Committee on Budgets stressed that reallocating some of the resources could irk some candidate countries, not least neighbouring Lithuania.
The assignment is for facilitated transport of persons (users) who the Department of Health and Care Services has awarded the right to transport to/from: 1.

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