Sorry! No search in Internet Explorer.
The URL (web address) shown by your browser starts with https because you visit this site using a secured connection. Note that the URI reference (identifier) of dexpi:SpecializationHassubclassNominalCapacity(Volume)HassuperclassCapacity(volume) to be used in DEXPI-compliant Proteus files starts with http - as shown below:

http://sandbox.dexpi.org/rdl/SpecializationHassubclassNominalCapacity(Volume)HassuperclassCapacity(volume)

dexpi:SpecializationHassubclassNominalCapacity(Volume)HassuperclassCapacity(volume)

Specialization

RDF Properties

Namespaces

pca
http://data.posccaesar.org/rdl/
dexpi
http://sandbox.dexpi.org/rdl/
p2
http://rds.posccaesar.org/2008/02/OWL/ISO-15926-2_2003#
rdf
http://www.w3.org/1999/02/22-rdf-syntax-ns#