<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31305026</termId><termName>fractionation</termName><termType>PT</termType><termNote><![CDATA[ In chemistry, a process of separation in which components of a mixture are removed in successive stages. ]]></termNote><termCreatedDate>2026-03-30 20:22:03</termCreatedDate><relation><relationType>BT</relationType><termId>31298694</termId><termName>subtractive processes and techniques</termName><termType>PT</termType></relation></term>  </Zthes>