<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31304659</termId><termName>oxidation</termName><termType>PT</termType><termNote><![CDATA[ The process or result of combining with oxygen; sometimes contributing to the degradation of a surface, such as in corrosion. ]]></termNote><termCreatedDate>2026-03-30 20:21:56</termCreatedDate><relation><relationType>UF</relationType><termId>31304660</termId><termName>oxidising</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31304661</termId><termName>oxidized</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31304662</termId><termName>oxidizing</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31298688</termId><termName>physicochemical processes</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31317653</termId><termName>autoxidation</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31317655</termId><termName>photooxidation</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31319861</termId><termName>oxidant</termName><termType>PT</termType></relation></term>  </Zthes>