passive transport

The movement of a chemical substance across a cell membrane without expenditure of energy by the cell, as in diffusion.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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Noun

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

The Majority leader also facilitated transport from Ijara to Nairobi where he presented the father with the cheque.

Duale comes to the rescue of top KCPE pupil

In this regard, facilitated transport membranes can be proposed as promising solution to overcome the upperbound constraint due to their high permselectivity [13, 18].

Facilitated transport by amine-mediated poly(vinyl alcohol) membranes for C[O.sub.2] removal from natural gas

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.

Iran shipping firm denies UK nuclear allegations

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.

Mathematical modelling of C[O.sub.2] facilitated transport through liquid membranes containing amines as carrier

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.

Materials science of membranes for gas and vapor separation

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.

BUDGET: PARLIAMENT AND COUNCIL CLOSER TO DEAL ON 2003 BUDGET