About: http://webisa.webdatacommons.org/146809125

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	However, since such gases contain impurities other than oxygen, and affect the formation process of fibers 1 and sheet-like fiber structure 20, it is necessary to appropriately control the concentration, temperature and pressure.
http://www.w3.org/ns/prov#wasQuotedFrom	freshpatents.com