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

<https://lod.nal.usda.gov/naltv#marc001> rdfs:label "Field 001 in MARC Authority Format"@en .
nalt:267_def
  a <https://lod.nal.usda.gov/naltv#Definition> ;
  rdf:value "Formas diferentes de un único elemento que tienen el mismo número de protones pero diferente cantidad de neutrones en su núcleo. Algunos isótopos radioactivos son inestables y desprenden partículas nucleares con el tiempo hasta que se vuelven estables. Por ejemplo, los isótopos inestables del uranio se reducen para convertirse en plomo."@es, "Different forms of a single element that have the same number of protons but different numbers of neutrons in their nuclei. Some radioactive isotopes are unstable and shed nuclear particles over time until they become stable. For instance, unstable isotopes of uranium break down to become lead."@en ;
  dc:source "Geologic Glossary, U.S. Geological Survey" .

<https://lod.nal.usda.gov/nalt>
  a skos:ConceptScheme ;
  rdfs:label "NALT Full"@en .

<https://lod.nal.usda.gov/naltv#Chemical>
  a owl:Class ;
  rdfs:label "Chemical"@en .

nalt:267
  a skos:Concept, <https://lod.nal.usda.gov/naltv#Chemical> ;
  dc:created "2006-01-19"^^xsd:date ;
  dc:modified "2019-09-03"^^xsd:date ;
  skos:broader nalt:264 ;
  skos:definition nalt:267_def ;
  skos:exactMatch <http://id.cabi.org/cabt/62087>, <http://id.agrisemantics.org/gacs/C2391>, agrovoc:c_11852, <http://id.loc.gov/authorities/subjects/sh00006433>, <http://id.loc.gov/authorities/subjects/sh85068681> ;
  skos:inScheme <https://lod.nal.usda.gov/nalt>, <https://lod.nal.usda.gov/nalt-core> ;
  skos:narrower nalt:47905, nalt:329290, nalt:323722, nalt:47906 ;
  skos:prefLabel "isotopes"@en, "isótopos"@es ;
  skos:related nalt:47902, nalt:333492, nalt:239, nalt:333495 ;
  ns0:marc001 "19840" .

nalt:47906
  a ns0:Chemical, skos:Concept ;
  skos:broader nalt:267 ;
  skos:prefLabel "tritiated water"@en, "agua tritiada"@es .

nalt:323722
  a ns0:Chemical, skos:Concept ;
  skos:broader nalt:267 ;
  skos:prefLabel "isótopos de carbono"@es, "carbon isotopes"@en .

nalt:329290
  a ns0:Chemical, skos:Concept ;
  skos:broader nalt:267 ;
  skos:prefLabel "isótopos de oxígeno"@es, "oxygen isotopes"@en .

nalt:47902
  a ns0:Topic, skos:Concept ;
  skos:prefLabel "marcaje isotópico"@es, "isotope labeling"@en ;
  skos:related nalt:267 .

nalt:333492
  a ns0:Topic, skos:Concept ;
  skos:prefLabel "separación isótopica"@es, "isotope separation"@en ;
  skos:related nalt:267 .

nalt:239
  a ns0:Chemical, skos:Concept ;
  skos:prefLabel "nucleidos"@es, "nuclides"@en ;
  skos:related nalt:267 .

nalt:333495
  a ns0:Topic, skos:Concept ;
  skos:prefLabel "enriquecimiento isotópico"@es, "isotopic enrichment"@en ;
  skos:related nalt:267 .

nalt:47905
  a ns0:Chemical, skos:Concept ;
  skos:broader nalt:267 ;
  skos:prefLabel "isótopos estables"@es, "stable isotopes"@en .

nalt:264
  a ns0:Chemical, skos:Concept ;
  skos:narrower nalt:267 ;
  skos:prefLabel "elementos químicos"@es, "chemical elements"@en .