<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31311695</termId><termName>lumens</termName><termType>PT</termType><termNote><![CDATA[ Use to refer to units of luminous flux. It is equal to the amount of flux emitted by one candela into a cone having the solid angle of one steradian. ]]></termNote><termCreatedDate>2026-03-30 20:23:58</termCreatedDate><relation><relationType>UF</relationType><termId>31311696</termId><termName>lumen</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31301338</termId><termName>illuminance</termName><termType>PT</termType></relation></term>  </Zthes>