<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31304810</termId><termName>sol-gel process</termName><termType>PT</termType><termNote><![CDATA[ The preparation of inorganic polymers or ceramics from solution through a transformation from liquid precursors to a sol and finally to a network structure called a ‘gel.’ Traditionally, the formation of a sol occurs through hydrolysis and condensation of metal alkoxide precursors, but a sol can be more generally defined as a colloidal suspension, which encompasses a wider range of systems.  ]]></termNote><termCreatedDate>2026-03-30 20:21:59</termCreatedDate><relation><relationType>UF</relationType><termId>31304811</termId><termName>sol-gel processing</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31304812</termId><termName>solution-gel process</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31298688</termId><termName>physicochemical processes</termName><termType>PT</termType></relation></term>  </Zthes>