<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31298156</termId><termName>instability</termName><termType>PT</termType><termNote><![CDATA[ The quality or state of lacking stability, of tending toward changeability, or of readily decomposing or changing chemically. ]]></termNote><termCreatedDate>2026-03-30 20:19:55</termCreatedDate><relation><relationType>UF</relationType><termId>31298157</termId><termName>instable</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31298158</termId><termName>unstable</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31296909</termId><termName>attributes and properties by specific type</termName><termType>PT</termType></relation></term>  </Zthes>