| fullrecord |
[{"key": "dc.contributor.advisor", "value": "Leino, Matti", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Hautanen, Pertti", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2017-12-08T13:24:40Z", "language": "", "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2017-12-08T13:24:40Z", "language": "", "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2017", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.other", "value": "oai:jykdok.linneanet.fi:1805080", "language": null, "element": "identifier", "qualifier": "other", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/56208", "language": "", "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Radiohiiliajoitus on paljon k\u00e4ytetty ajoitusmenetelm\u00e4 erityisesti orgaanista alkuper\u00e4\u00e4 olevien tutkimuskohteiden ajoituksessa. Radiohiili eli hiili-14 (C-14) on radioaktiivinen hiilen isotooppi, jonka puoliintumisaika on noin 5700 vuotta. Radiohiilt\u00e4 syntyy yl\u00e4ilmakeh\u00e4ss\u00e4 luonnollisin mekanismein kosmisen s\u00e4teilyn vuorovaikutuksesta ilmakeh\u00e4n partikkeleiden kanssa. Radiohiilt\u00e4 syntyy my\u00f6s ihmisen tekojen vaikutuksesta. Aikanaan Ilmakeh\u00e4ss\u00e4 tehdyt ydinasekokeet tuottivat merkitt\u00e4v\u00e4n m\u00e4\u00e4r\u00e4n radiohiilt\u00e4. My\u00f6s ydinvoimaloissa syntyy radiohiilt\u00e4. Radiohiili reagoi ilmassa olevan hapen kanssa tuottaen ns. raskasta hiilidioksidia. Kasvit k\u00e4ytt\u00e4v\u00e4t hiilidioksidia yhteytt\u00e4misess\u00e4, jolloin radiohiilt\u00e4 kulkeutuu kasveihin. Ravintoketjun my\u00f6t\u00e4 radiohiilt\u00e4 kulkeutuu eri eli\u00f6ihin, my\u00f6s ihmiseen. Hiilidioksidia sitoutuu my\u00f6s veteen, jolloin radiohiilt\u00e4 kulkeutuu vedess\u00e4 el\u00e4viin kasveihin ja eli\u00f6ihin. Radiohiiliajoitus tehd\u00e4\u00e4n nyky\u00e4\u00e4n l\u00e4hinn\u00e4 mittaamalla radiohiiliydinten lukum\u00e4\u00e4r\u00e4 kiihdytinmassaspektrometrill\u00e4. Ajoitus voidaan tehd\u00e4 my\u00f6s mittaamalla n\u00e4ytteen aktiivisuus kaasut\u00e4ytteisell\u00e4 ilmaisimella tai tuikeilmaisimella, mutta n\u00e4m\u00e4 menetelm\u00e4t ovat selv\u00e4sti ep\u00e4tarkempia. T\u00e4ss\u00e4 ty\u00f6ss\u00e4 on k\u00e4sitelty radiohiiliajoitusta ja siihen vaikuttavia tekij\u00f6it\u00e4 teoreettisesti.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Pertti Hautanen (peanhaut) on 2017-12-08 13:24:39.439769. Form: Pro gradu -lomake (https://kirjasto.jyu.fi/julkaisut/julkaisulomakkeet/pro-gradu-lomake). JyX data: [jyx_publishing-allowed (fi) =True]", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by jyx lomake-julkaisija (jyx-julkaisija.group@korppi.jyu.fi) on 2017-12-08T13:24:40Z\r\nNo. of bitstreams: 2\r\nURN:NBN:fi:jyu-201712084572.pdf: 2517837 bytes, checksum: 2368b00f46d3fe232f8c2287511324f6 (MD5)\r\nlicense.html: 4777 bytes, checksum: 00cb5baa73a72648e3097e30454cef8e (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2017-12-08T13:24:40Z (GMT). No. of bitstreams: 2\r\nURN:NBN:fi:jyu-201712084572.pdf: 2517837 bytes, checksum: 2368b00f46d3fe232f8c2287511324f6 (MD5)\r\nlicense.html: 4777 bytes, checksum: 00cb5baa73a72648e3097e30454cef8e (MD5)\r\n Previous issue date: 2017", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "1 verkkoaineisto (98 sivua)", "language": null, "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.format.mimetype", "value": "application/pdf", "language": null, "element": "format", "qualifier": "mimetype", "schema": "dc"}, {"key": "dc.language.iso", "value": "fin", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "radiohiili", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Radiohiiliajoitus", "language": null, "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-201712084572", "language": null, "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Matemaattis-luonnontieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Fysiikan laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Physics", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Soveltava fysiikka", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Applied Physics", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.method", "value": "Kirjallisuuskatsaus", "language": null, "element": "subject", "qualifier": "method", "schema": "dc"}, {"key": "dc.date.updated", "value": "2017-12-08T13:24:40Z", "language": "", "element": "date", "qualifier": "updated", "schema": "dc"}, {"key": "yvv.contractresearch.funding", "value": "0", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": "fi", "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "4023", "language": null, "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "i\u00e4nm\u00e4\u00e4ritys", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "menetelm\u00e4t", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "radiohiiliajoitus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "hiili", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "radioaktiivisuus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "hajoaminen", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.format.content", "value": "fulltext", "language": null, "element": "format", "qualifier": "content", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}, {"key": "dc.type.okm", "value": "G2", "language": null, "element": "type", "qualifier": "okm", "schema": "dc"}]
|