<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31436608</termId><termName>photochemistry</termName><termType>PT</termType><termNote><![CDATA[ Branch of chemistry that deals with the chemical effects of radiation, chiefly visible and ultraviolet light, and with the direct production of radiation by chemical changes. ]]></termNote><termCreatedDate>2026-03-30 20:57:43</termCreatedDate><relation><relationType>UF</relationType><termId>31436609</termId><termName>photochemical</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31410590</termId><termName>physical chemistry</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31368814</termId><termName>photochemists</termName><termType>PT</termType></relation></term>  </Zthes>