A light emitting device uses a source of exciting radiation such as an light emitting diode to excite a photo luminescent material to provide a source of visible light. The photo luminescent material is loaded into a low density material such as a xerogel or an aerogel which is adjacent the source of exciting radiation

 
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< Combinatorial synthesis

< Radiopaque cationically polymerizable compositions comprising a radiopacifying filler, and method for polymerizing same

> Lithium/carbon monofluoride (Li/CF.sub.x) electrochemical cell projection model

> Partially fluorinated polymer coated development electrodes
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