<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31317208</termId><termName>nephelometry</termName><termType>PT</termType><termNote><![CDATA[ A technique for studying turbidity which records the decrease in intensity of a light beam resulting from its passage through a suspension of particles. A detector, the nephelometer, measures the scattered light and may thus indirectly measure the size and concentration of particles in the suspension. ]]></termNote><termCreatedDate>2026-03-30 20:25:25</termCreatedDate><relation><relationType>BT</relationType><termId>31304391</termId><termName>measuring</termName><termType>PT</termType></relation></term>  </Zthes>