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.
References in periodicals archive ?
Robotic pallet shuttle systems employ sustainable low-footprint pallet lifts, instead of aisles, and enable pallet locations to store 20 pallets deep.
"We've invested heavily in shuttle systems," Czarda says, with about $3 million being spent this year on a third-party contract.
But the shuttle system is probably facilitating the congestion we saw on the trails.
A built-in, self-contained shuttle system enables the unit to elevate 1.5 in.
A shuttle system of nine flatbed trucks was used to move the equipment that had sustained the most damage.
The machine combines 12,000-rpm spindle speed (14,000-rpm optional), 1.5 second tool-to-tool changes, 1890-ipm rapid traverses, and a 2-pallet, rotary shuttle system with a quick 7.8 second pallet change time.
To further ease the process, CPC's line of machines can automatically transfer furnaces or molds by way of a shuttle system. The furnace transfer system keeps the metal in the crucible after the pouring process so degassing occurs in the same place and keeps the metal constant.
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 problems could foreshadow catastrophe.
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 problems could foreshadow catastrophe.
The shuttle system was grounded for 32 months while NASA redesigned the SRBs.
"Our previous understanding has been that HDL serves as a taxi, a shuttle system for cholesterol," Shaul points out, "delivering it from peripheral tissues, including blood vessels, to the liver and other organs where it is starting material for steroid hormones or where it is excreted." The current study reveals an entirely new mechanism whereby HDL provides even more benefits to vascular health.

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