<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31398444</termId><termName>proportional counters</termName><termType>PT</termType><termNote><![CDATA[ Radiation counters into which the sample is introduced in the form of a gas through the counter tube. The phenomenon of gas multiplication is used to increase pulse size which facilitates processing of the sample. ]]></termNote><termCreatedDate>2026-03-30 20:47:07</termCreatedDate><relation><relationType>UF</relationType><termId>31398445</termId><termName>counters, proportional</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31398446</termId><termName>gas counters</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31398447</termId><termName>gas proportional counters</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31398448</termId><termName>proportional counter</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31398449</termId><termName>proportional gas counters</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31358412</termId><termName>nuclear energy measuring devices</termName><termType>PT</termType></relation></term>  </Zthes>