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Article
Interferometric Tracking for Close Geosynchronous Satellites
An experimental approach to the monitoring of the relative orbital motions of closely operating geosynchronous satellites is presented. A radio-interferometer tracks two satellites so as to measure the differe...
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Article
Protection by Substrate Analogues from Ultra-violet Damage of Bovine Pancreatic Ribonuclease
THERE is a great deal of evidence that the sensitivity to ionizing radiation of an enzyme is influenced by the presence of a substrate or a substrate analogue in the medium. For example, bovine pancreatic ribo...