Wal-Mart expands test of mobile checkout program
Wal-Mart Stores Inc. is expanding a test of a new checkout program that allows shoppers to scan items with their smartphones and then pay at self-checkout terminals.
Wal-Mart Stores Inc. is expanding a test of a new checkout program that allows shoppers to scan items with their smartphones and then pay at self-checkout terminals.
Business
Mar 20, 2013
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Researchers at Dana-Farber/Children's Hospital Cancer Center have devised a strategy to directly activate a natural "death" protein, triggering the self-destruction of cells. They say the development could represent a new ...
Biochemistry
May 31, 2012
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(PhysOrg.com) -- As researchers strive to increase the density and functionality of circuit elements onto computer chips, one newer option they have is a memory resistor (or “memristor”), the fourth passive circuit element. ...