@prefix isq: <https://w3id.org/standards/isq/ontologies/core/> .
@prefix smart: <https://example.org/smart-sdu/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<isq:t10-64>
  a isq:Entry ;
  rdf:type isq:Quantity ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "10-64" ;
  skosxl:prefLabel "diffusion coefficient"@en ;
  skosxl:altLabel "diffusion coefficient for particle number density"@en ;
  skosxl:altLabel "D"@en ;
  skosxl:altLabel "D_n"@en ;
  skos:definition "proportionality constant between the particle current density stem:[bb(ii(J))] (<<t10-48>>) and the gradient of the particle number density stem:[n] (<<t10-62.1>>):\n\n[stem%unnumbered]\n++++\nbb(ii(J)) = -D * nabla n\n++++\n"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-10> ;
  isq:hasUnit [
    skos:notation "m^2*s^(-1)" ;
    skosxl:prefLabel "square metre per second"@en
  ] ;
  skos:note "The word \"particle\" is usually replaced by the name of a specific particle, for example _neutron_ number density.\n\nFor a particle of a given speed stem:[nu]:\n\n[stem%unnumbered]\n++++\nD_n(nu) = -(J_(nu,x))/(del n_nu//del x)\n++++\n"@en ;
  iso:urn <urn:iso:std:iso:80000:-10:ed-2:en:item:10-64> .