active transport

Definitions

  • WordNet 3.6
    • n active transport transport of a substance (as a protein or drug) across a cell membrane against the concentration gradient; requires an expenditure of energy
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Usage

In literature:

The water carrier was still active and the night transport of sewage necessary.
"Our Legal Heritage, 5th Ed." by S. A. Reilly
Art transports us from the world of man's activity to a world of aesthetic exaltation.
"Art" by Clive Bell
Each insect was in a transport of activity.
"A Daughter of the Middle Border" by Hamlin Garland
West and W. P. Weston, Esq., who, for some years, had been actively engaged in the struggle against transportation.
"The History of Tasmania, Volume I (of 2)" by John West
This entailed the handing over of all the active service equipment, and also all transport.
"Short History of the London Rifle Brigade" by Unknown
Virtue infers liberty, as the transport of a burden implies active force.
"A Philosophical Dictionary, Volume 9 (of 10)" by François-Marie Arouet (AKA Voltaire)
However, be these conjectures as they may, the East has long been the scene of tin production and of transportation activity.
"De Re Metallica" by Georgius Agricola
As I write, the list of the French ports at which the transport department of the Red Cross conducts its chief activities is before me.
"With the Doughboy in France" by Edward Hungerford
In contrast, when oxygen transport is interrupted, a reduction in cellular activity occurs and regulation is impaired.
"Significant Achievements in Space Bioscience 1958-1964" by National Aeronautics and Space Administration
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In news:

The Florida Department of Transportation will activate the new traffic signal at the intersection of US Highway 98 and Green Briar Parkway/Country Club Road in Gulf Breeze the afternoon of Thursday, Nov 8.
Every day, in the course of routine activities, thousands of Tucsonans transport people who are in the country illegally.
US Highway 30 By Chris Whitaker, Carroll, IA cwhitaker@region12cog.org Discussion of the activities of the US Highway 30 Coalition of Iowa and the importance of US Highway 30 as a transportation corridor.
We are a broad-based, transportation labor union representing about 125,000 active and retired railroad, bus and mass transit workers in the United States and Canada.
The senior center provides transportation and social activities for seniors who may not be able to drive anymore.
Ocean freight transportation activities came to a halt late yesterday in several US Gulf coast ports as Tropical Storm Isaac bears down on the Louisiana coast, taking aim at New Orleans seven years after Hurricane Katrina ravaged the city.
Assists patients with tending to personal care, activities of daily living and transfers/transport.
Nedcargo came to a partnership with International Transport Agency for the handling and forwarding activities in Russia.
Transportation, Land Use and Community Design Policies should be put in place and reinforced to create or expand efforts to promote active living environments that can support adults with arthritis being physically active.
Sheriff Brent Lindgren has received approval to hire four full-time, active licensed peace officers to be on call for part-time duty in the county's court security and transport division.
The US Department of Transportation issued a Press Release stating that the Maritime Administration (MARAD) recently conducted an exercise involving rapid activation of three Ready Reserve Force (RRF) ships.
A brand new active transportation initiative is hitting the streets of Fort Richmond.
(AP) — A Texas man convicted in North Dakota of attempting to transport a minor for criminal sexual activity is asking for a mistrial.
The Australian Transport Safety Bureau found the pilots primarily responsible for activation of stick shaker of their QantasLink Dash 8-300 while on final approach.
APL Logistics on Wednesday unveiled a new shipment planning platform aimed at changing the way large freight buyers coordinate their transportation activities.
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In science:

Assuming an unshielded production and transportation time of 30 days at sea level for the Ge–detectors, and a deactivation time of one year, we obtain the radioisotope concentrations listed in Table 2 (for 68Ge the saturation activity is assumed; the value for 3H is taken from ).
GENIUS-TF: a test facility for the GENIUS project
At the boundary of the latter region, for b = −1, the active transport equation (10) admits stationary plane waves as exact nonlinear solutions.
Nonlinear balance and exchange of stability in dynamics of solitons, peakons, ramps/cliffs and leftons in a 1+1 nonlinear evolutionary pde
Section 11 is devoted to double quantum dots where exciting new experiments studying the influence of microwaves on the transport properties of these devices have spurred a great deal of theoretical activity.
Photon-assisted transport in semiconductor nanostructures
The so-called “fueling problem ” in starbursts (as well as in AGN) is not the amount of gas present, but how to transport this gas from the main body of the host galaxy to the central region where it is needed to feed the activity.
Fueling and morphology of central starbursts
So, any additional initial state hadronic activity, associated with this trigger, may be expected to be transported by transverse flow towards the near-side.
Predictions for the LHC heavy ion programme
Several solar phenomena (i.e., solar differential rotation, supergranular diffusion and meridional flows) couple together to transport poleward the midlatitude magnetic flux of decaying active regions.
On the Latitude Distribution of the Polar Magnetic Flux as Observed by SOLIS-VSM
At finite temperatures these materials conduct under DC bias v ia thermally activated transport of charges hopping between localized states in an impurity band.
Electrodynamics of correlated electron systems
As it is mostly assumed that the transport is a reflection of some underlying turbulent state, identification of its source mechanism and process has been the focus of much research activity. A leading candidate mechanism is the magnetorotational instability (Balbus & Hawley 1991).
Low magnetic-Prandtl number flow configurations for cold astrophysical disk models: speculation and analysis
If so that is probably due to strict security mechanisms which actively block CC transportability into U’s machine.
Informal Control code logic
The argument is very appealing: A decrease in the difference between the step edge barrier and the activation energy for diffusion on the flat terraces could enhance the interlayer mass transport.
Density Functional Theory of Epitaxial Growth of Metals
These activities are then put together (“chained”), their transportation is planned and finally executed in the microsimulation.
Using microsimulation feedback for trip adaptation for realistic traffic in Dallas
At intermediate temperatures, when the contribution from cotunneling is small, the existence of a Coulomb gap leads to activated transport.
Spin flip scattering in magnetic junctions
The thermally excited quasiparticles can carry dissipative current and, because σxx is approximately proportional to their concentration, the activated transport experiments are used to determine the energy gap.
QHE Today
Most dangerous appears the cosmic activation of the crystals while produced and transported on the earth surface due to spallation reactions with cosmic rays (hadronic component).
Non-baryonic dark matter searches
The TRANSIMS design specifies to use demographic data as input and generate, via synthetic households and synthetic activities, the transportation demand.
The dynamics of iterated transportation simulations
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