@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 ns0: <https://lod.nal.usda.gov/naltv#> .

<https://lod.nal.usda.gov/naltv#marc001> rdfs:label "Field 001 in MARC Authority Format"@en .
nalt:24652_def
  a <https://lod.nal.usda.gov/naltv#Definition> ;
  rdf:value "La elaboración de pulpa kraft involucra la cocción (digestión) de los chips de madera en una solución alcalina (hidróxido de sodio, hidrosulfida, y sulfuro de sodio) por varias horas durante las cuales los químicos atacan la lignina de la madera. Después, la lignina disuelta se retira pero deja las fibras de celulosa. La pulpa kraft sin blanquear es de color café oscuro, por lo que antes de ser usada en muchos procesos para elaborar papel, debe someterse a varios procesos de blanqueo."@es, "Kraft pulping involves cooking (digesting) wood chips in an alkaline solution (sodium hydroxide, hydrosulfide, and sodium sulfide) for several hours during which time the chemicals attack the lignin in the wood. The dissolved lignin is later removed leaving behind the cellulose fibres. Unbleached kraft pulp is dark brown in colour, so before it can be used in many papermaking applications it must undergo a series of bleaching processes."@en ;
  dc:source "NAL Thesaurus Staff" .

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

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

nalt:24652
  a skos:Concept, <https://lod.nal.usda.gov/naltv#Topic> ;
  dc:created "2006-01-19"^^xsd:date ;
  dc:modified "2012-11-30"^^xsd:date ;
  skos:altLabel "sulphate pulping"@en, "sulfate pulping"@en ;
  skos:broader nalt:6430 ;
  skos:closeMatch <http://id.loc.gov/authorities/subjects/sh85130334> ;
  skos:definition nalt:24652_def ;
  skos:exactMatch <http://id.agrisemantics.org/gacs/C15369>, <http://id.cabi.org/cabt/113084> ;
  skos:inScheme <https://lod.nal.usda.gov/nalt>, <https://lod.nal.usda.gov/nalt-core> ;
  skos:prefLabel "elaboración de pulpa kraft"@es, "kraft pulping"@en ;
  skos:related nalt:17978 ;
  ns0:marc001 "20291" .

nalt:17978
  a ns0:Product, skos:Concept ;
  skos:prefLabel "celulosa de fibra larga"@es, "kraft pulp"@en ;
  skos:related nalt:24652 .

nalt:6430
  a ns0:Topic, skos:Concept ;
  skos:narrower nalt:24652 ;
  skos:prefLabel "chemical pulping"@en, "pulpeo químico"@es .