<?xml version="1.0" encoding="utf-8"?><Thesaurus
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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=31343251">	<dcterms:created>2026-03-30 20:32:34</dcterms:created><PreferredTerm dc:identifier="http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31343251" xml:lang="en">	<LexicalValue>silicic acid ester</LexicalValue>	<dcterms:created>2026-03-30 20:32:34</dcterms:created></PreferredTerm><ScopeNote xml:lang="en">  <LexicalValue><![CDATA[ Silicate ester-based compounds, often used as consolidants. Hydrolysis of the silicic acid ester takes place slowly, so that the silicic acid ester can penetrate deeply into the stone to be strengthened; only in this way can a uniform degree of strength be achieved. ]]></LexicalValue></ScopeNote><NonPreferredTerm dc:identifier="http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31343252" xml:lang="en">	<LexicalValue>SAE</LexicalValue>		<dcterms:created></dcterms:created>		<USE>http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31343251</USE></NonPreferredTerm><NonPreferredTerm dc:identifier="http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31343253" xml:lang="en">	<LexicalValue>silicic ester</LexicalValue>		<dcterms:created></dcterms:created>		<USE>http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31343251</USE></NonPreferredTerm><HasHierRelConcept Role="BT">http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31319736</HasHierRelConcept></ThesaurusConcept></Thesaurus>