'Revolutionary' telescope gets green light

Green tea gets molecular.

Green tea and its major polyphenolic flavonoid, epigallocatechin gallate (EGCG), have been credited with cancer chemopreventive activity for many years; the mechanism for this activity, however, has remained obscure. Now, as reported in this issue of the journal (beginning on page 1366), Urusova and colleagues showed direct binding of EGCG to the peptidyl prolyl cis/trans isomerase Pin1, which ...

Traffi c light labelling gets the green light Front - of - Pack Food Labelling

The Green Bank Telescope

Following two months of very successful commissioning and the first science observations on the GBT (see the following articles), operation was suspended in early April, one month earlier than planned, to work on the azimuth track. As described in previous NRAO Newsletters, the azimuth track wear strips, on which the azimuth wheels roll, were shifting slightly in a circumferential direction as ...

Rangefinder Metrology for the Green Bank Telescope

A scanning laser rangefinder metrology system for the 100-meter Green Bank Telescope is de¬ scribed. Use of this system for correction of the primary reflector's shape and pointing of the tele¬ scope is described.

The Green Bank Telescope Active Surface System

During the design phase of the Green Bank Telescope (GBT), various means of providing an accurate surface (0.220 mm) on a large aperture paraboloid (100 m), were considered. Automated jacks supporting the primary reflector were selected as the appropriate technology since they promised greater performance and potentially lower costs than a homologous or carbon fiber design, and had certain adva...