<http://webisa.webdatacommons.org/prov/61819505>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/428912083> .
<http://webisa.webdatacommons.org/428912083>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<saylor.org> .
<http://webisa.webdatacommons.org/428912083>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/428912083>	<http://www.w3.org/ns/prov#value>	"Application of differential analysis allows the determination of how properties such as fluid velocity and pressure vary within a volume of interest." .