<http://webisa.webdatacommons.org/prov/299315010>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/86968920> .
<http://webisa.webdatacommons.org/86968920>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/86968920>	<http://www.w3.org/ns/prov#value>	"A europium-activated x-ray phosphor composition of the formula: Ba1-x Srx FH:yEuwherein x is from about 0 to about 0.5, y is from about 0.001 to about 0.100 and H is a halogen selected from the chlorine and bromine, characterized in that europium is present in the trivalent state in an amount of at least 1 percent of the amount of europium in the divalent state. 2." .
<http://webisa.webdatacommons.org/86968920>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<freepatentsonline.com> .