<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31432102</termId><termName>fluorescence</termName><termType>PT</termType><termNote><![CDATA[ Emission of electromagnetic radiation, usually visible light, caused by excitation of atoms in a material, which then reemit almost immediately. The initial excitation is usually caused by absorption of energy from incident radiation or particles, such as X-rays or electrons. ]]></termNote><termCreatedDate>2026-03-30 20:56:34</termCreatedDate><relation><relationType>UF</relationType><termId>31432103</termId><termName>fluorescent</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31402826</termId><termName>luminescence</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31453001</termId><termName>x-ray fluorescence</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31453004</termId><termName>ultraviolet fluorescence</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31402840</termId><termName>incandescence</termName><termType>PT</termType></relation></term>  </Zthes>