active transport


Also found in: Dictionary, Thesaurus, Medical, Legal, Financial, Wikipedia.

active transport

[′ak·tiv ′tranz‚pȯrt]
(physiology)
The pumping of ions or other substances across a cell membrane against an osmotic gradient, that is, from a lower to a higher concentration.
References in periodicals archive ?
While there has been an explosion in the health literature of studies documenting and in some cases quantifying the health benefits of these modes," said Dr Lee, "evaluating the active transport and health effects of new transportation projects and land use plans is relatively new.
To expand the limits of transdermal drug delivery, developers are employing energy sources such as ultrasound, heat and electrical current to affect active transport through the skin.
4 metres in width )with additional active transport improvements.
Contract awarded for the contractor will provide a team to undertake a range of technical services required to develop the definition design for the sutherland to cronulla active transport link (scatl) project.
To expand the limits of transdermal drug delivery, developers are employing microporation techniques and energy sources such as ultrasound, heat and electrical current to affect active transport through the skin.
Another example is a membrane that will oscillate its (localized) free volume thus providing an active transport mechanism for species through the membrane.
Active transport such as riding a bike has been proven to keep hearts and lungs in shape without over-stressing joints.
Other non-invasive routes to exploit for insulin delivery include ansdermal patches utilizing some form of active transport to drive the sizeable insulin molecule through the skin, and delivery via the buccal mucosa.
As part of the basic operation of the armed forces are - Blood products as cold-chain transport in the direct transport in vehicles with active cooling (primary active transport system);- Cool ethical pharmaceuticals / growth media as cooling and cold-chain transport in vehicles with an active cooling;- Medical sample material is transported in lockable isolating transport containers with limited cooling time (passive primary transport system)transport for the Bundeswehr nationwide.
This is one of part of the way that the ACT Government is building Canberras integrated transport network and will work cooperatively with future roads and active transport plans in order to maintain the world class standard of living by Canberrans, Minister Gentleman concluded.
Of 3,691 active transport and haulage firms in Yorkshire, only 975 are now identified as being at higher than normal risk.