<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31341313</termId><termName>x-ray absorption spectroscopy</termName><termType>PT</termType><termNote><![CDATA[ X-ray spectroscopy technique in which an intense, tunable X-ray beam of variable frequency from a synchrotron radiation source is directed at a sample and the absorption of the X-rays is measured as a function of frequency. ]]></termNote><termCreatedDate>2026-03-30 20:32:03</termCreatedDate><relation><relationType>UF</relationType><termId>31341314</termId><termName>XAS</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31341315</termId><termName>spectroscopy, x-ray absorption</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31341316</termId><termName>x-ray absorbance spectroscopy</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31317272</termId><termName>x-ray spectroscopy</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31372130</termId><termName>x-ray absorption near-edge structure</termName><termType>PT</termType></relation></term>  </Zthes>