<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31327470</termId><termName>sound absorption</termName><termType>PT</termType><termNote><![CDATA[ The decay of sound energy as its distance from the sound source increases, due to the conversion of the acoustic energy to heat generated in the medium. ]]></termNote><termCreatedDate>2026-03-30 20:28:15</termCreatedDate><relation><relationType>UF</relationType><termId>31327471</termId><termName>absorption, sound</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31308500</termId><termName>acoustics concepts</termName><termType>PT</termType></relation></term>  </Zthes>