{"created":"2023-05-15T14:59:16.245242+00:00","id":80417,"links":{},"metadata":{"_buckets":{"deposit":"4e500a67-f5a3-4337-a580-766a7a519f71"},"_deposit":{"created_by":1,"id":"80417","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"80417"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00080417","sets":["1"]},"author_link":["913571","913572","913573","913574","913575"],"item_8_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2020-10","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"1","bibliographicPageEnd":"97","bibliographicPageStart":"85","bibliographicVolumeNumber":"150","bibliographic_titles":[{"bibliographic_title":"The Philippine Journal of Science "}]}]},"item_8_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Carboxymethyl derivatives of k-carrageenan(CMkC), with different degrees of substitution, were gamma-irradiated in viscous or paste solutions. Successfully obtained chemically crosslinked hydrogels showed dependence on the degree of substitution(DS), concentration, and radiation dose. The highest gel fraction was 76% exhibited by CMkC-3s hydrogel with a DS of 1.58. The hydrogels showed different swelling degrees in water and saline. Swelling behavior versus time, in both solvents, corresponded to 2nd order kinetics. The CMkC-3s at 20% concentration irradiated at 15 kGy had the highest water absorption of 324 g water/g dry gel. Selected hydrogels were evaluated for applications as wound dressing, as water retainer in sandy soil, and as metal adsorbent. As a wound dressing, CMkC-2s and CMkC-3s hydrogels exhibited considerable tensile strengths, abilities to absorb pseudo extracellular fluid and extractables with pH/conductivity conducive for healing promotion.  In addition, the CMkC-3s hydrogel had no cytotoxic potential based on the MTT test.  As water retainer in sandy soil, test samples with 0.1, 0.3 and 0.5% CMkC-3s granules retained 25.1%, 32.2%, and 42.6% water, respectively, at day 0 compared to 19.2% of the sandy soil alone. On day 7, the three sandy soil-CMkC groups still had 13.7%, 19.4%, and 29.3% water while the control had only 3.85%.  In the batch adsorption studies, the hydrogels adsorbed heavy metals (Cu2+, Zn2+, Cd2+ and Pb2+) in the solution at different capacities, with Cd2+ as the highly adsorbed and Pb2+ as the least.  The CMkC-3s hydrogel showed the highest metal uptake and adsorption efficiency, followed by CMkC-2s, then CMkC-1s. The CMkC-3s hydrogel, further tested on pH effect, had optimum metal uptake at neutral pH.","subitem_description_type":"Abstract"}]},"item_8_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"National Institute of Science and Technology"}]},"item_8_relation_17":{"attribute_name":"関連サイト","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://philjournalsci.dost.gov.ph/102-vol-150-no-1-february-2021/1277","subitem_relation_type_select":"URI"}}]},"item_8_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0031-7683","subitem_source_identifier_type":"ISSN"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"T. Aranilla, Charito"}],"nameIdentifiers":[{"nameIdentifier":"913571","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Jeremiah D. Barba, Bin"}],"nameIdentifiers":[{"nameIdentifier":"913572","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"S. Relleve, Lorna"}],"nameIdentifiers":[{"nameIdentifier":"913573","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Nagasawa, Naotsugu"}],"nameIdentifiers":[{"nameIdentifier":"913574","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Nagasawa, Naotsugu","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"913575","nameIdentifierScheme":"WEKO"}]}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Properties and Potential Applications of Carboxymethyl-kappa-carrageenan Hydrogels Crosslinked by Gamma Radiation","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Properties and Potential Applications of Carboxymethyl-kappa-carrageenan Hydrogels Crosslinked by Gamma Radiation"}]},"item_type_id":"8","owner":"1","path":["1"],"pubdate":{"attribute_name":"公開日","attribute_value":"2020-09-07"},"publish_date":"2020-09-07","publish_status":"0","recid":"80417","relation_version_is_last":true,"title":["Properties and Potential Applications of Carboxymethyl-kappa-carrageenan Hydrogels Crosslinked by Gamma Radiation"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T21:00:46.890166+00:00"}