Re: Blank nodes must DIE! [ was Re: Blank nodes semantics - existential variables?]

Dan Brickley wrote (a while back):

?  On Thu, 23 Jul 2020 at 19:50, Patrick J Hayes <phayes@ihmc.us<mailto:phayes@ihmc.us?Subject=Re%3A%20Blank%20nodes%20must%20DIE!%20%5B%20was%20Re%3A%20Blank%20nodes%20semantics%20-%20%20existential%20variables%3F%5D&In-Reply-To=%3CCAFfrAFqgq7JxxwzEhYoMV70haRznXkjLBiOwhQUjwGJ0S0vsug%40mail.gmail.com%3E&References=%3CCAFfrAFqgq7JxxwzEhYoMV70haRznXkjLBiOwhQUjwGJ0S0vsug%40mail.gmail.com%3E>> wrote:

?

?  > Excellent. I have thought for some time that this way of using datatyping

?  > would be the right way to go. Congratulations on having actually done it :-)

?  >

?

?  This is really interesting. Every couple of years I stumble across UCUM (

?  http://unitsofmeasure.org/trac ->

?  http://unitsofmeasure.org/trac/wiki/TermsOfUse) before being scared away by

?  the prickly terms of use document. It is not a document that seems to

?  welcome re-use.

?

?  Dan

I've attempted to clarify this with Gunther Schadow, but can't get a response.
Meanwhile, I was pointed to this service which does quantity conversions based on UCUM codes:

  *   Form UI - https://ucum.nlm.nih.gov/ucum-lhc/demo.html
  *   API - https://ucum.nlm.nih.gov/ucum-service.html
FWIW QUDT now has basic UCUM support as well - https://github.com/qudt/qudt-public-repo/blob/master/schema/SCHEMA_QUDT-v2.1.ttl#L2924

I peered into the UCUM Terms of Use document and I believe this is the relevant clause:

  *   5) UCUM codes and other information from the UCUM table may be used in electronic messages communicating measurements without the need to include this Copyright Notice and License or a reference thereto in the message (and without the need to include all fields required by Section 7 hereof).
So I think we are in the clear to use UCUM codes in the manner that has been discussed in this conversation.

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