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	xsi:schemaLocation="http://schemas.bs8723.org/XmlSchema/DD8723-5.xsd">	 <dc:identifier>http://AATesaurus.cultura.gencat.cat/aat/getty_en</dc:identifier>  <dc:title>Tesaurus d&apos;Art i Arquitectura</dc:title>  <dc:creator>Getty Institute</dc:creator>  <dc:subject></dc:subject>  <dc:description><![CDATA[  ]]></dc:description>  <dc:publisher>Getty Institute</dc:publisher>  <dc:date>0000-00-00</dc:date>  <dc:language>en</dc:language><ThesaurusConcept dc:identifier="http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31320480">	<dcterms:created>2026-03-30 20:26:22</dcterms:created><PreferredTerm dc:identifier="http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31320480" xml:lang="en">	<LexicalValue>silicon</LexicalValue>	<dcterms:created>2026-03-30 20:26:22</dcterms:created></PreferredTerm><ScopeNote xml:lang="en">  <LexicalValue><![CDATA[ Semi-metallic element, having symbol Si and atomic number 14, in amorphous and crystalline forms, occurring in a combined state in minerals and rocks and constituting more than one fourth of the earth's crust. The chemical industry uses the term "silicon metal" and "silicon" interchangeably, and anything but pure silicon is generally referred to in this context as "semiconductor-grade silicon." ]]></LexicalValue></ScopeNote><NonPreferredTerm dc:identifier="http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31320481" xml:lang="en">	<LexicalValue>Si</LexicalValue>		<dcterms:created></dcterms:created>		<USE>http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31320480</USE></NonPreferredTerm><NonPreferredTerm dc:identifier="http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31320482" xml:lang="en">	<LexicalValue>silicon metal</LexicalValue>		<dcterms:created></dcterms:created>		<USE>http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31320480</USE></NonPreferredTerm><HasHierRelConcept Role="BT">http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31306143</HasHierRelConcept><HasHierRelConcept Role="BT">http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31319740</HasHierRelConcept></ThesaurusConcept></Thesaurus>