<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31398451</termId><termName>actinometers</termName><termType>PT</termType><termNote><![CDATA[ Any instrument used to measure the intensity of radiant energy, especially of the sun. ]]></termNote><termCreatedDate>2026-03-30 20:47:07</termCreatedDate><relation><relationType>UF</relationType><termId>31398452</termId><termName>actinometer</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31358415</termId><termName>radiant energy measuring devices</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31428234</termId><termName>actinographs</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31428236</termId><termName>pyrheliometers</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31341248</termId><termName>actinometry</termName><termType>PT</termType></relation></term>  </Zthes>