shuttle

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shut·tle

(shŭt'ĕl),
A going back and forth regularly; used in respect to certain transport processes across a biomembrane.

shuttle

Space medicine
Any of the five—Columbia, Challenger, Discovery, Atlantis and Endeavour—reusable spacecraft that carried personnel and equipment into orbit, providing platform of the cutting-edge research critical in constructing the largest structure in space, the International Space Station. The first mission was launched in April 1981; the last space shuttle mission, STS-135, ended in July 2011.

shuttle

(shŭt′l)
To transport an object back and forth; in cell biology or biochemistry, to carry a molecule repeatedly across a cell membrane.

shuttle

the transport of electrons or organic groups across biological membranes.

shuttle system
means of transfer of reducing equivalents as NADH and H+ from the cytosol to mitochondria. The two main systems are: α-glycerophosphate shuttle and malate-aspartate shuttle.
References in periodicals archive ?
Zion's shuttle system is also responsible for the overall increase in hikers, because visitors are no longer limited by the number of parking spaces at a trailhead.
Projects funded tinder the $13 million Federal Transit Administration combined grants include expenses for additional buses and light-rail vehicles to supplement existing transit service in Utah, construction of the Olympic Loop Busway at Snowbasin Ski Resort, park-and-ride lots, walk-and-ride lots, and other facilities that form the Olympic transit shuttle system.
To increase the service level a shuttle system was needed for leaf collection that mirrored the shuttle system devised for the heavy brush and extra trash season.
The revised policy, according to department spokesman Tom Winfrey, states that "A shuttle system will be operating to transport news media to the scene as permitted by the agency in charge of the incident.
Shuttle system: The shuttle system (5), which holds 25,000 cases, provides a way to aggregate and automate the storage and picking of the slowest moving SKUs as well as SKUs that are ordered in small quantities.
The discharger features a shuttle system that allows a hopper that has been used to be exchanged for a clean, dry hopper in less than one minute.
To ensure that young people across Middlesbrough can access myplace, we will use our existing small fleet of minibuses to operate a shuttle system.
He said he has promised that no men will be allowed and has set up a shuttle system so women and children can get to the bus station without walking up and down the canyons.
Editorial Reply: We agree that Cades Cove is an ideal location for a shuttle system.
The horizontal shuttle system runs on guide rails with a rack-and-pinion synchronizer to ensure consistent platen parallelism under all load conditions.
In events leading up to the loss of Columbia, the report said, Nasa mission managers fell into the habit of accepting as normal some flaws in the shuttle system and tended to ignore or not recognise that these could lead to catastrophe.
At Acadia, a voluntary shuttle system was initiated on Mount Desert Island last summer.

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