fraction

IRI: https://spec.industrialontologies.org/ontology/construct/Fraction

Defined In: https://spec.industrialontologies.org/ontology/biopharma/BiopharmaReferenceOntologyAttributes/

SubClass Of: ratio

Class Hierarchy

owl:Thing › bfo:entity › bfo:continuant › bfo:specifically dependent continuant › bfo:quality › bfo:relational quality › ratio › fraction

Direct subclasses:

• impurity fraction
• mass fraction
• number fraction
• volume fraction

Definition

ratio of a material entity that is determined by the magnitude of a quality of a specified part of that material entity relative to the magnitude of a quality of the same kind of that material entity as a whole

Examples

• the mass fraction of glucose in a powdered medium; the molar fraction of oxygen in a gas mixture; the volume fraction of ethanol in an aqueous solution; the solids fraction of a slurry; the volume fraction of gas in a foam; the mass fraction of water molecules in a lyophilized drug product cake

Adapted From

• http://purl.allotrope.org/ontologies/quality#AFQ_0000172

Primitive Class

This class is declared primitive and it does not have necessary and sufficient condiftions defined.

Primitive Rationale

There are insufficient constructs for creating a set of necessary and sufficient conditions

Formal Axioms

First-Order Logic Axioms

Fraction(x) → Ratio(x) ∧ ∃m (MaterialEntity(m) ∧ qualityOf(x, m))

Semi-Formal Natural Language Axioms

if x is a ‘fraction’ then x is a ‘ratio’ that is the ‘quality of’ some ‘material entity’ y

Description Logic

constr:Fraction ⊑ constr:Ratio

constr:Fraction ⊑ ∃ constr:qualityOf .bfo:material_entity

SubClassOf: constr:Ratio

SubClassOf: constr:qualityOf some bfo:material_entity