PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Part of the problem was the need for expensive and rare elements, such as platinum or iridium, to act as catalysts that encourage the conversion to happen.So Haile and her team took a novel approach; they tried ceria, a material used in the walls of self-cleaning ovens.
http://www.w3.org/ns/prov#wasQuotedFrom
  • nanotech-now.com