| http://www.w3.org/ns/prov#value | - In one embodiment of the present invention, the housing is a water-insoluble substrate containing a galvanic couple, for example, a fine zinc wire or a fine zinc-coated fiber (e.g., zinc-coated polymer fiber) connected to a fine copper wire or a fine copper-coated fiber (e.g., copper-coated polymer fiber).
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