number density
IRI: https://spec.industrialontologies.org/ontology/construct/NumberDensity
Defined In: https://spec.industrialontologies.org/ontology/biopharma/BiopharmaReferenceOntologyAttributes/
SubClass Of: density
Class Hierarchy
owl:Thing › bfo:entity › bfo:continuant › bfo:specifically dependent continuant › bfo:quality › bfo:relational quality › density › number density
Direct subclasses:
Definition
density that is the number of countable entities per unit size
Examples
- the number density of cells in a culture fluid; the number density of particles in cleanroom air; the number density of viable cells in a cell suspension
Adapted From
- http://purl.allotrope.org/ontologies/quality#AFQ_0000180
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
NumberDensity(x) → Density(x)
Semi-Formal Natural Language Axioms
if x is a ‘number density’ then x is a ‘density’
Description Logic
SubClassOf: constr:Density