<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31346863</termId><termName>diodes</termName><termType>PT</termType><termNote><![CDATA[ A simple electron tube with only two electrodes, an anode and a cathode. For more sophisticated electron tubes housed in evacuated glass bulbs, use "vacuum tubes." ]]></termNote><termCreatedDate>2026-03-30 20:33:33</termCreatedDate><relation><relationType>UF</relationType><termId>31346864</termId><termName>diode</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31321908</termId><termName>electron tubes</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31377211</termId><termName>LEDs</termName><termType>PT</termType></relation></term>  </Zthes>