<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31386491</termId><termName>Bunsen burners</termName><termType>PT</termType><termNote><![CDATA[ Gas burners used in laboratory work in which gas and air can be combined variably to control the heat output. These are named for Robert Bunsen, a German chemist who developed it ca. 1855, in partnership with Peter Desdega. ]]></termNote><termCreatedDate>2026-03-30 20:44:14</termCreatedDate><relation><relationType>UF</relationType><termId>31386492</termId><termName>Bunsen burner</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31386493</termId><termName>bunsen burner</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31353034</termId><termName>heating equipment</termName><termType>PT</termType></relation></term>  </Zthes>