@prefix nalt: <https://lod.nal.usda.gov/nalt/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix dc: <http://purl.org/dc/terms/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix ns0: <https://lod.nal.usda.gov/naltv#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .

nalt:2772
  skos:narrower nalt:2736, nalt:2753 ;
  skos:exactMatch <http://id.agrisemantics.org/gacs/C168>, <http://id.cabi.org/cabt/88049>, <http://aims.fao.org/aos/agrovoc/c_5753> ;
  skos:hiddenLabel "pHs"@en, "pH-dependent"@en, "hydrogen-ion concentration"@en ;
  a <https://lod.nal.usda.gov/naltv#Topic>, skos:Concept ;
  skos:definition nalt:2772_def ;
  skos:broader nalt:2828 ;
  skos:related nalt:10, nalt:2742 ;
  skos:prefLabel "pH"@es, "pH"@en ;
  dc:modified "2018-10-19"^^xsd:date ;
  skos:inScheme <https://lod.nal.usda.gov/nalt>, <https://lod.nal.usda.gov/nalt-core> ;
  dc:created "2006-01-19"^^xsd:date ;
  ns0:marc001 "27964" ;
  skos:altLabel "hydrogen ion concentration"@en .

nalt:2828
  skos:prefLabel "propiedades fisicoquímicas"@es, "physicochemical properties"@en ;
  a ns0:Topic, skos:Concept ;
  skos:narrower nalt:2772 .

nalt:2753
  skos:prefLabel "pH sanguíneo"@es, "blood pH"@en ;
  a ns0:Topic, skos:Concept ;
  skos:broader nalt:2772 .

nalt:2742
  skos:prefLabel "acidificación"@es, "acidification"@en ;
  a ns0:Topic, skos:Concept ;
  skos:related nalt:2772 .

nalt:2736
  skos:prefLabel "pH del suelo"@es, "soil pH"@en ;
  a ns0:Topic, skos:Concept ;
  skos:broader nalt:2772 .

<https://lod.nal.usda.gov/nalt-core>
  rdfs:label "NALT Core"@es, "NALT Core"@en ;
  a skos:ConceptScheme .

ns0:Topic
  rdfs:label "Topic"@en ;
  a owl:Class .

nalt:10
  skos:prefLabel "bases químicas"@es, "chemical bases"@en ;
  a ns0:Chemical, skos:Concept ;
  skos:related nalt:2772 .

nalt:2772_def
  rdf:value "Medida de la actividad de los iones hidrógeno en solución, expresada mediante una escala que va de 0 (muy ácido) a 14 (muy básico). El pH 7.0 constituye una solución neutra, ni ácida ni básica."@es, "A measure of the hydrogen-ion activity in solution, expressed on a scale 0 (highly acid) to 14 (highly basic); 7.0 pH is a neutral solution, neither acid nor basic."@en ;
  dc:source "Schwarz, Charles F.; Thor, Edward C.; Elsner, Gary H. 1976. Wildland planning glossary. Gen. Tech. Rep. PSW-13. Berkeley, Calif.: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station" ;
  a ns0:Definition .