<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">chemical engineers</topic></authority><related type="other"><topic>chemists</topic></related><related type="other"><topic>chemical engineering</topic></related><related type="broader"><topic>engineers</topic></related><variant type="other"><topic>chemical engineer</topic></variant><variant type="other"><topic>chemical engineer&apos;s</topic></variant><variant type="other"><topic>chemical engineers&apos;</topic></variant><variant type="other"><topic>engineers, chemical</topic></variant> <note xml:lang="en"><![CDATA[ Refers to people employed in the design and development of the processes of creating chemicals and in the operation and requirements of a chemical plant. They are concerned with data and predictions that often have to be obtained or confirmed with pilot experiments. Their activities differ from chemists in that chemists deal with the research of and actual creation of chemicals. ]]></note></mads>