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<http://webisa.webdatacommons.org/prov/51116482>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/435965706> .
<http://webisa.webdatacommons.org/435965706>	<http://www.w3.org/ns/prov#value>	"The heat sources may be graphite (carbon) rods; graphite particles (kryptol) ; resistance heating elements made of a compound such as silicon carbide or lanthanum chromate, or a metal wire such as a platinum, Nichrome or tungsten wire; metal heating elements; ceramic heating elements; or platinum heating elements." .
<http://webisa.webdatacommons.org/435965706>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .