QUDT request cmol/L about def-au-scm

[bsimons14]

Conversion to SI

[steveraysteveray]

Hi, I followed one of the links in the QUDT repo and ended up here. Couldn't help chiming in that the CentiMOL-PER-L can not have these two lines:
http://qudt.org/schema/qudt/hasQuantityKind http://qudt.org/vocab/quantitykind/IonicStrength ;
http://qudt.org/schema/qudt/hasQuantityKind http://qudt.org/vocab/quantitykind/MolalityOfSolute ;

...because those two quantity kinds have a different dimensionality.

I ran this quick query at our SPARQL endpoint

SELECT *
WHERE {
  ?qk qudt:hasDimensionVector qkdv:A1E0L-3I0M0H0T0D0 .
?qk a qudt:QuantityKind .
}

which gives all the dimensionally commensurate quantity kinds that you could pick, as desired.

[dr-shorthair]

I like
qudt:hasQuantityKind quantitykind:AmountOfSubstancePerUnitVolume ;

But not sure about
qudt:hasQuantityKind quantitykind:Solubility_Water ;

[meganrwong]

[like http://qudt.org/vocab/unit/CentiMOL-PER-KiloGM]
(http://qudt.org/vocab/unit/MOL-PER-L)

[meganrwong]

Need your review here @abhritchie as there are some things I don't understand
I looked at http://qudt.org/vocab/unit/MOL-PER-L and http://qudt.org/vocab/unit/CentiMOL-PER-KiloGM for this

• I'm not 100 % clear on what the conversionMultiplier is, conversion to what? SI units ie MOL here? is it that is it equal to 0.01 mol/L. Assuming this, I had conversion factor of 0.01
• I get what 'dimension vectors' is now but don't have a full grasp of. so I just based it on another substance per volume's dimension vector identifier (MOL-PER-L)
• Also, not sure what the Quantity kinds could be :
• I think most applicable for our case is http://qudt.org/vocab/quantitykind/MolalityOfSolute
• Could also be (as well as) https://qudt.org/vocab/quantitykind/IonicStrength
• not specifically exclusive to water, but could also be - http://qudt.org/vocab/quantitykind/Solubility_Water
• (I'll stick it under all three Quantity kinds for now)

@Prefix owl: http://www.w3.org/2002/07/owl# .
@Prefix rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns# .
@Prefix rdfs: http://www.w3.org/2000/01/rdf-schema# .
@Prefix xsd: http://www.w3.org/2001/XMLSchema# .

http://qudt.org/vocab/unit/CentiMOL-PER-L
rdf:type http://qudt.org/schema/qudt/Unit ;
http://qudt.org/schema/qudt/conversionMultiplier 0.01 ;
http://qudt.org/schema/qudt/hasDimensionVector https://qudt.org/vocab/dimensionvector/A1E0L-3I0M0H0T0D0 ;
http://qudt.org/schema/qudt/hasQuantityKind http://qudt.org/vocab/quantitykind/AmountOfSubstancePerUnitVolume ;
http://qudt.org/schema/qudt/hasQuantityKind http://qudt.org/vocab/quantitykind/IonicStrength ;
http://qudt.org/schema/qudt/hasQuantityKind http://qudt.org/vocab/quantitykind/MolalityOfSolute ;
http://qudt.org/schema/qudt/hasQuantityKind http://qudt.org/vocab/quantitykind/Solubility_Water ;
http://qudt.org/schema/qudt/isUnitOfSystem http://qudt.org/vocab/sou/SI ;
http://qudt.org/schema/qudt/plainTextDescription "1/100 of SI unit of amount of substance per litre" ;
http://qudt.org/schema/qudt/symbol "cmol/L" ;
http://qudt.org/schema/qudt/ucumCode "cmol.L-1"^^http://qudt.org/schema/qudt/UCUMcs ;
http://qudt.org/schema/qudt/ucumCode "cmol/L"^^http://qudt.org/schema/qudt/UCUMcs ;
rdfs:isDefinedBy http://qudt.org/2.1/vocab/unit ;
rdfs:label "Centimole per litre"@en ;
.

[meganrwong]

Got ya, just worked that out, thanks Bruce!

[meganrwong]

just edited my question - I have questions about 'dimension vector' and 'quantity kinds'

[meganrwong]

ok, I've done the best I can now in the above now, let me know if you can see anything amiss..... appreciate your time @abhritchie & @bsimons14 . I'll get the hang of it.....

[bsimons14]

QUDT allows multiple QuantityKinds for any Unit as it is the observable property and some units can be applied to multiple properties. VAS limits each Unit to a single QuantityKind but this is purely an implementation strategy that may not be required for ANSIS.

[meganrwong]

qudt/qudt-public-repo#672

[meganrwong]

Hi, I followed one of the links in the QUDT repo and ended up here. Couldn't help chiming in that the CentiMOL-PER-L can not have these two lines: http://qudt.org/schema/qudt/hasQuantityKind http://qudt.org/vocab/quantitykind/IonicStrength ; http://qudt.org/schema/qudt/hasQuantityKind http://qudt.org/vocab/quantitykind/MolalityOfSolute ;

...because those two quantity kinds have a different dimensionality.

I ran this quick query at our SPARQL endpoint

SELECT *
WHERE {
  ?qk qudt:hasDimensionVector qkdv:A1E0L-3I0M0H0T0D0 .
?qk a qudt:QuantityKind .
}

which gives all the dimensionally commensurate quantity kinds that you could pick, as desired.

Thanks very much for your time with this QUDT submission first timer ;) I appreciate it

[meganrwong]

ok, thanks for the patience folks - I'm learning! Do you recon I've got the right quantity kind here (and I've for the dimensionvector in now, and both the quantityKind have the same dimensionvector) - @dr-shorthair ?

I just went as per MOL-PER-L :

unit:CentiMOL-PER-L
a qudt:Unit ;
qudt:conversionMultiplier 0.01 ;
qudt:hasDimensionVector dimensionvector:A1E0L-3I0M0H0T0D0 ;
dcterms:description "1/100 of SI unit of amount of substance per litre" ;
qudt:hasQuantityKind quantitykind:AmountOfSubstancePerUnitVolume ;
qudt:hasQuantityKind quantitykind:Solubility_Water ;
qudt:symbol "cmol/L" ;
qudt:ucumCode "cmol.L-1" ;
qudt:ucumCode "cmol/L" ;
rdfs:isDefinedBy http://qudt.org/2.1/vocab/unit ;
rdfs:label "Centimole per litre"@en ;
.

[meganrwong]

Again, thanks @steveraysteveray and apologies for my tardiness
done https://qudt.org/vocab/unit/CentiMOL-PER-L