<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31304764</termId><termName>pyrolysis</termName><termType>PT</termType><termNote><![CDATA[ Molecular breakdown effected by the action of heat; the chemical process by which a compound is converted into one or more products initiated by this thermal reaction. ]]></termNote><termCreatedDate>2026-03-30 20:21:58</termCreatedDate><relation><relationType>BT</relationType><termId>31298688</termId><termName>physicochemical processes</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31304713</termId><termName>burning</termName><termType>PT</termType></relation></term>  </Zthes>