<?xml version="1.0" encoding="utf-8"?><rdf:RDF  xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"  xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"  xmlns:skos="http://www.w3.org/2004/02/skos/core#"  xmlns:map="http://www.w3c.rl.ac.uk/2003/11/21-skos-mapping#"  xmlns:dct="http://purl.org/dc/terms/"  xmlns:dc="http://purl.org/dc/elements/1.1/"><skos:ConceptScheme rdf:about="http://AATesaurus.cultura.gencat.cat/aat/getty_en">  <dc:title>Tesaurus d&apos;Art i Arquitectura</dc:title>  <dc:creator>Getty Institute</dc:creator>  <dc:contributor></dc:contributor>  <dc:publisher></dc:publisher>  <dc:rights></dc:rights>  <dc:subject></dc:subject>  <dc:description><![CDATA[  ]]></dc:description>  <dc:date>0000-00-00</dc:date>  <dct:modified>2024-01-24 15:40:44</dct:modified>  <dc:language>en</dc:language>  </skos:ConceptScheme>  <skos:Concept rdf:about="http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31410821"><skos:prefLabel xml:lang="en">nitrogen dioxide</skos:prefLabel><skos:notation>300379677</skos:notation><skos:altLabel xml:lang="en">dioxide, nitrogen</skos:altLabel> <skos:scopeNote xml:lang="en">A toxic and reactive reddish gas, NO2, nitrogen dioxide  is an atmospheric pollutant (as in photochemical smog) produced by combustion of fossil fuels. Exposure to nitrogen oxide can cause fading of dyes and organic colorants in paints, textiles, and photographs, as well as deterioration of calcareous stone.</skos:scopeNote><skos:inScheme rdf:resource="http://AATesaurus.cultura.gencat.cat/aat/getty_en"/><skos:broader rdf:resource="http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31373690"/><skos:exactMatch> <skos:Concept rdf:about="http://AATesaurus.cultura.gencat.cat/aat/getty_es/index.php?tema=14101755"> <skos:prefLabel xml:lang="es">nitrogen dioxide (traducció pendent)</skos:prefLabel> </skos:Concept></skos:exactMatch><skos:exactMatch> <skos:Concept rdf:about="http://AATesaurus.cultura.gencat.cat/aat/getty_ca/index.php?tema=9859722"> <skos:prefLabel xml:lang="ca">nitrogen dioxide (traducció pendent)</skos:prefLabel> </skos:Concept></skos:exactMatch>  <dct:created>2026-03-30 20:50:27</dct:created>  </skos:Concept></rdf:RDF>