| http://www.w3.org/ns/prov#value | - For example, mobile phones can contain more than 40 elements, including base metals, such as copper and tin, special metals, such as cobalt, indium and antimony, and precious and platinum group metals, including silver, gold, palladium, tungsten and yttrium [9].The product-centric approach deals with the product as a whole rather than as separate contained metals and materials and is seen as a mor
|
