<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31306109</termId><termName>nanomaterials</termName><termType>PT</termType><termNote><![CDATA[ Refers to materials whose particle constituents are of nanoscale dimensions, especially nano-engineered materials produced by nanotechnology.  ]]></termNote><termCreatedDate>2026-03-30 20:22:22</termCreatedDate><relation><relationType>UF</relationType><termId>31306110</termId><termName>nanomaterial</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31306111</termId><termName>nanometer material</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31306112</termId><termName>nanophase material</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31306113</termId><termName>nanostructured material</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31298940</termId><termName>materials by property</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31320417</termId><termName>nanofiber</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31320419</termId><termName>nanosponges</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31320421</termId><termName>nanogel</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31320423</termId><termName>nanocellulose films</termName><termType>PT</termType></relation></term>  </Zthes>