Word: signalling
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Dates: during 1990-1999
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About two years ago, it was discovered that tumor growth could be slowed almost completely by using normal proteins to signal the vascular endothelial cells which line blood vessels...
...first time, it became possible to shut off angiogenesis and cause [tumor] regression," Folkman said. "This was caused by a specific signal which only talks to endothelial cells...
Digital broadcasting encodes data--in this case, the video and audio signal sent by a station--in binary form as ones and zeroes. Computers and compact discs are dependent on digital encoding instead of the older analog methods...
Other stations will have the option of sending just one "signal" over their frequency, but making their broadcast high-definition instead. Manufacturers and content providers have fought over HDTV--which provides for a larger viewing area and greater resolution--for the better part of a decade. HDTV will be available over the new digital channels...
...agreement to phase in new rules that should make the sharper images of digital or high-definition TV available in time for the 1998 football season. By then, broadcasters such as NBC and CBS have agreed, the nation's top 10 markets will be getting the richer television signal--which includes lush digital sound and a crystal-clear picture. Still, few analysts expect HDTV to take off anytime before the millennium. Between the $3,000 price tag for the sets and the slow arrival of new programming, couch potatoes may have to stew a bit longer...