| http://www.w3.org/ns/prov#value | - At a temperature Tx which is in the range 20??? C. to (Tm1 +25)??? C., the composition of the invention has a resistivity which is at least 1.05 times greater, preferably 1.10 times greater, particularly at least 1.15 times greater than the resistivity at Tx for the second composition.
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