"file:///apps/whyis/nan" is 5th-ranked materials attribute

[mdeagen]

See https://materialsmine.org/wi/viz/4f186e8c00d40d03

Due to changes in SETLr? Ontology mappings? Will require some digging to trace error...

[mdeagen]

Below SPARQL query returns sample IDs, values, and (optionally) units for attributes of this type

PREFIX nm: <http://nanomine.org/ns/>
PREFIX sio: <http://semanticscience.org/resource/>
SELECT DISTINCT * WHERE {
  ?sample a nm:PolymerNanocomposite ;
          sio:hasAttribute ?attr .
  ?attr a <file:///apps/whyis/nan> ;
        sio:hasValue ?value .
  OPTIONAL { ?attr sio:hasUnit ?unit }
}

[mdeagen]

Of those containing units, the distinct units of measure are:

• kV/mm (both with nanomine.org and materialsmine.org domain)
• percent
• MV/mm

Possibly related to how reported values of Dielectric Breakdown Strength are ingested from the XMLs? Weibull plots contain cumulative probability (often as a percent) versus electric field (kV/mm or MV/mm).