About: http://webisa.webdatacommons.org/455857892

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, close to the tube wall the volume fraction is reduced, because the particles only touch the wall at one or two points. ( think for example of a sphere resting on a flat plane.
http://www.w3.org/ns/prov#wasQuotedFrom	biology-online.org