@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix voc4cat: <https://w3id.org/nfdi4cat/voc4cat_> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix dc: <http://purl.org/dc/terms/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://w3id.org/nfdi4cat/voc4cat>
  a skos:ConceptScheme ;
  skos:prefLabel "Voc4Cat - A SKOS vocabulary for Catalysis."@en .

voc4cat:0007239
  a skos:Concept ;
  rdfs:seeAlso <https://github.com/nfdi4cat/voc4cat/blame/main/vocabularies/voc4cat/IDs0007xxx/0007239.ttl> ;
  dc:created "2024-02-28"^^xsd:date ;
  dc:identifier "0007239"^^xsd:token ;
  dc:modified "2026-02-18"^^xsd:date ;
  dc:provenance <https://github.com/nfdi4cat/voc4cat/blame/main/vocabularies/voc4cat/IDs0007xxx/0007239.ttl> ;
  skos:broader voc4cat:0000186 ;
  skos:changeNote "0009-0008-1278-8890 Michael Götte created the resource"@en ;
  skos:definition "The frequency of an alternating (ac) current is a measure of how many times the direction of the current flow changes, in the same direction, per second. As the direction of flow changes back and forth, the total number of directional changes, per second, is twice the frequency."@en ;
  skos:inScheme <https://w3id.org/nfdi4cat/voc4cat> ;
  skos:narrower voc4cat:0007242, voc4cat:0007241 ;
  skos:prefLabel "frequency"@en .

voc4cat:0007242
  a skos:Concept ;
  skos:broader voc4cat:0007239 ;
  skos:prefLabel "final frequency"@en .

voc4cat:0007241
  a skos:Concept ;
  skos:broader voc4cat:0007239 ;
  skos:prefLabel "initial frequency"@en .

voc4cat:0000186
  a skos:Concept ;
  skos:narrower voc4cat:0007239 ;
  skos:prefLabel "attributes"@en .