| http://www.w3.org/ns/prov#value | - Examples of such a material are PTC (positive temperature coefficient) thermally sensitive resistors which can be produced from doped polycrystalline ceramic material based on barium titanate. [0018] In the event that the composition of a gas mixture such as e.g. atmospheric moisture is to be measured, an organic conducting material can be used in which, depending on the concentration of the mater
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