{"created":"2021-03-01T06:43:47.058615+00:00","id":8388,"links":{},"metadata":{"_buckets":{"deposit":"df810a6c-8df0-4363-aacf-e33208b4e430"},"_deposit":{"id":"8388","owners":[],"pid":{"revision_id":0,"type":"depid","value":"8388"},"status":"published"},"_oai":{"id":"oai:tsukuba.repo.nii.ac.jp:00008388","sets":["3:233:254"]},"author_link":["34861"],"item_12_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2001","bibliographicIssueDateType":"Issued"}}]},"item_12_date_granted_46":{"attribute_name":"学位授与年月日","attribute_value_mlt":[{"subitem_dategranted":"2001-03-23"}]},"item_12_degree_grantor_44":{"attribute_name":"学位授与大学","attribute_value_mlt":[{"subitem_degreegrantor":[{"subitem_degreegrantor_language":"ja","subitem_degreegrantor_name":"筑波大学"},{"subitem_degreegrantor_language":"en","subitem_degreegrantor_name":"University of Tsukuba"}],"subitem_degreegrantor_identifier":[{"subitem_degreegrantor_identifier_name":"12102","subitem_degreegrantor_identifier_scheme":"kakenhi"}]}]},"item_12_degree_name_43":{"attribute_name":"取得学位","attribute_value_mlt":[{"subitem_degreename":"博士（理学）"},{"subitem_degreename":"Doctor of Philosophy in Science"}]},"item_12_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Meteorites are extraterrestrial materials formed in the early solar nebula about 4.6 billion years ago. Carbonaceous chondrites which belong one oh meteorite groups contain various kinds of extraterrestrial organic compounds formed by abiotic process. Therefore, characteristic features of organic compounds in carbonaceous chondrite provide useful information to the primordial organic chemistry in the early solar system and chemical evolution on the primitive earth. On the other hand, sedimentary rocks were formed on the earth and contain terrestrial organic compounds derived from organisms lived on the past earth. Therefore, analyses of organic compounds in sedimentary rocks provide good information to biological activity on the past earth and their alternation process occurred during their burial periods.  ･･･","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_12_description_45":{"attribute_name":"学位授与年度","attribute_value_mlt":[{"subitem_description":"2000","subitem_description_type":"Other"}]},"item_12_description_5":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"Includes bibliograpical references","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_12_dissertation_number_47":{"attribute_name":"報告番号","attribute_value_mlt":[{"subitem_dissertationnumber":"甲第2575号"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open 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