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.
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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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
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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The Majority leader also facilitated transport from Ijara to Nairobi where he presented the father with the cheque.
Studies based on the use of supported liquid membranes for removing some toxic metal ions from concentrated acid solutions are very numerous; the interest in this study was focused on the phenomenon of facilitated transport and extraction of [VO.sub.2.sup.+] ions.
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.
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.

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