12453
For weakly conducting samples , electric dipole absorption dominates , and is maximized when the conductivity is approximately sigma =~ 3 omega epsilon ( 0 ) =~ 0 . 4 S m ( - 1 ) , independent of particle radius .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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