<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/schema/zthes-1.0.dtd">  <Zthes><term><termId>3741</termId><termName>Fuerza y energía</termName><termType>PT</termType><termLanguage>es</termLanguage><termVocabulary>INDICES DE MATERIAS</termVocabulary>	<termStatus>active</termStatus>	<termApproval>approved</termApproval>	<termSortkey>Fuerza y energía</termSortkey><termNote label="Source"><![CDATA[ <p>550.36</p>
<p>551.511</p> ]]></termNote><termCreatedDate>Fuerza y energía</termCreatedDate><relation><relationType>UF</relationType><termId>11324</termId><termName>Conservación de la energía</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>11325</termId><termName>Energía</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>11326</termId><termName>Fuentes de energía</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>11289</termId><termName>Área 1. Física de la atmósfera</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>3733</termId><termName>Balance energético (Geofísica)</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>6995</termId><termName>Dinámica</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>1754</termId><termName>Mecánica</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>1712</termId><termName>Movimiento</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>11327</termId><termName>Quanta, Teoría de los</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>9293</termId><termName>Energía mecánica</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>3756</termId><termName>Física</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>7414</termId><termName>Principios variacionales</termName><termType>PT</termType></relation></term>  </Zthes>