{"_buckets": {"deposit": "0fc47838-3415-4c56-b60a-31d5547bd71d"}, "_deposit": {"id": "2003157", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "2003157"}, "status": "published"}, "_oai": {"id": "oai:u-ryukyu.repo.nii.ac.jp:02003157", "sets": ["1642837911830", "1642838407312"]}, "author_link": [], "item_1617186331708": {"attribute_name": "Title", "attribute_value_mlt": [{"subitem_1551255647225": "\u30b8\u30e3\u30fc\u30ac\u30eb\u3068\u305d\u306e\u6bcd\u6750\u306b\u95a2\u3059\u308b\u7814\u7a76 : \u7b2c 5 \u5831\u6c96\u7e04\u672c\u5cf6, \u90a3\u8987\u5e02\u5177\u5fd7\u304a\u3088\u3073\u5177\u5fd7\u982d\u6751\u5b89\u91cc\u571f\u58cc(\u5c64)\u65ad\u9762\u306e\u7c98\u571f\u9271\u7269(\u8fb2\u82b8\u5316\u5b66\u79d1)", "subitem_1551255648112": "ja"}, {"subitem_1551255647225": "Studies on theJaagarusolis and their parent materials : V. Clay minerals of soil profiles at Gushi, Naha city and Asato, Gushikami-son, Okinawa Island (Department of Agricultural Chemistry)", "subitem_1551255648112": "en"}]}, "item_1617186419668": {"attribute_name": "Creator", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "\u6e21\u5609\u6577, \u7fa9\u6d69", "creatorNameLang": "ja"}]}, {"creatorNames": [{"creatorName": "\u5927\u5c4b, \u4e00\u5f18", "creatorNameLang": "ja"}]}, {"creatorNames": [{"creatorName": "Tokashiki, Yoshihiro", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Oya, Kazuhiro", "creatorNameLang": "en"}]}]}, "item_1617186476635": {"attribute_name": "Access Rights", "attribute_value_mlt": [{"subitem_1522299639480": "open access", "subitem_1600958577026": "http://purl.org/coar/access_right/c_abf2"}]}, "item_1617186626617": {"attribute_name": "Description", "attribute_value_mlt": [{"subitem_description": "\u6c96\u7e04\u672c\u5cf6\u5357\u90e8\u306b\u304a\u3044\u3066, 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1\u6b21\u9271\u7269\u3068\u3057\u3066\u306f\u77f3\u82f1\u304c\u4e3b\u8981\u9271\u7269\u3067, \u4ed6\u306b\u9577\u77f3\u3084\u30af\u30ea\u30b9\u30c8\u30d0\u30e9\u30a4\u30c8\u304c\u968f\u4f34\u3057\u305f\u3002", "subitem_description_type": "Other"}, {"subitem_description": "Two soil profiles were selected in the southern part of Okinawa Island to characterize physical, chemical and mineralogical properties of the soil in relation to underlying parent materials. One soil profile was located at Gushi, Naha-city (Profile no. 0-11), and the soil was brown and rather sandy, which is called \"niibi\" by an Okinawan dialect. The other soil profile was at Asato, Gushikami-son (Profile no. 0-14), and the soil was brown and rather clayey, which is locally called \"maaji\". Both of the soils were underlain by marl like deposit called \"kucha\" in Okinawa. The dissolution method with dithionite, sodium-oxalate and sodium hydroxide was employed in addition to ordinary procedures of studying physical and chemical properties of the soil. Mineral compositions of the clay and silt fractions were also studied by the X-ray diffraction method. At the 0-11 profile the \"niibi\" layers were slightly alkaline. The sand fractions ranged from 80 to 90% in the fine earth. The clay fractions contained 25 to 39% of amorphous constituents. The contents of amorphous materials dissolved by dithionite, sodium-oxalate and sodium hydroxide treatments were little different among the treatments and among the layers in the \"niibi\" profile. Iron oxides were about 11 to 18% in the dithionite soluble material and 4 to 6% in the sodium hydroxide soluble material. Illite and montmorillonite were the major crystalline materials in the residues; vermiculite-chlorite intergrade, vermiculite, chlorite and kaolin minerals were the minor ones, and pyrophyllite was in the least quantity. In the sand fractions the primary mineral quartz was the major constituent, and also identified were feldspar, diaspore, dolomite, pyrophyllite and cristobalite in a minor quantity. At the 0-14 profile the \"maaji\" layers were generally acid in reaction and ranged from clay loam to light clay in texture containing 21 to 40% of clay. Amorphous constituents dissolved from the clay fractions were different in the content by the respective dissolution treatments and by the layers of \"maaji\", and also the difference was distinctive from those in the \"niibi\" layers of the 0-11 profile and in the underlain \"kucha\" layers of both the 0-11 and the 0-14 profile.", "subitem_description_type": "Other"}, {"subitem_description": "The difference in the composition of the amorphous material was remarkable specifically in the sodium-oxalate soluble and the sodium hydroxide soluble materials. Iron oxides in the clay fraction of the \"maaji\" layers were about 8 to 13% in the dithionite soluble material and about 1 to 2% in the sodium-oxalate soluble material. The main crystalline minerals in the clay fractions were illite and vermiculite-chlorite intergrade accompanied by small quantitis of vermiculite, kaolin minerals and montmorillonite. In the silt fractions identified were quartz in a large quantity, and feldspar and cristobalite in a small quantity. The marl like \"kucha\" layers at the both profiles of 0-11 and 0-14 were all slightly alkaline in reaction and loam in texture having 9 to 12% of clay. Different amounts of amorphous materials were obtained from the clay fractions by the respective dissolution treatments and by the \"kucha\" layers. A remarkable difference was occurred specifically in the composition (SiO_2/Al_2O_3 ratio) of the sodium hydroxide soluble material among the \"kucha\" layers within a profile and between the \"kucha\" layers of the 0-11 and the 0-14 profiles. Iron oxides in the clay fractions of the \"kucha\" layers were 2 to 5% in the dithionite soluble material and 2 to 3% in the sodium-oxalate soluble material, respectively. Crystalline materials were 81 to 91% in the clay fractions, the figures of which were much higher than those in the \"niibi\" and \"maaji\" layers. The mineral compositions in the \"kucha\" layers were similar to those of the \"niibi\" layers except for the absence of pyrophyllite in the clay fractions and the absence of pyrophyllite and diaspore but the presence of calcite in the silt fractions.", "subitem_description_type": "Other"}, {"subitem_description": "\u7d00\u8981\u8ad6\u6587", "subitem_description_type": "Other"}]}, "item_1617186643794": {"attribute_name": "Publisher", "attribute_value_mlt": [{"subitem_1522300295150": "ja", "subitem_1522300316516": "\u7409\u7403\u5927\u5b66\u8fb2\u5b66\u90e8"}]}, "item_1617186702042": {"attribute_name": "Language", "attribute_value_mlt": [{"subitem_1551255818386": "jpn"}]}, "item_1617186783814": {"attribute_name": "Identifier", "attribute_value_mlt": [{"subitem_identifier_type": "HDL", "subitem_identifier_uri": "http://hdl.handle.net/20.500.12000/4147"}]}, "item_1617186920753": {"attribute_name": "Source Identifier", "attribute_value_mlt": [{"subitem_1522646500366": "ISSN", "subitem_1522646572813": "0370-4246"}, {"subitem_1522646500366": "NCID", "subitem_1522646572813": "AN00250548"}]}, "item_1617186941041": {"attribute_name": "Source Title", "attribute_value_mlt": [{"subitem_1522650068558": "ja", "subitem_1522650091861": "\u7409\u7403\u5927\u5b66\u8fb2\u5b66\u90e8\u5b66\u8853\u5831\u544a"}, {"subitem_1522650068558": "en", "subitem_1522650091861": "The Science Bulletin of the Faculty of Agriculture. 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