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24 0 0 0 OA 第15章ポーランドと東方ロカルノ案 (1934年) に関する小論

著者: 植田隆子
出版者: 東欧史研究会
雑誌: 東欧史研究 (ISSN:03866904)
巻号頁・発行日: vol.1, pp.176-189, 1978 (Released:2017-09-28)

24 0 0 0 OA 愛知県統計書

著者: 愛知県編
出版者: 愛知県
巻号頁・発行日: vol.大正10年第1編, 1924

2022-09-14 19:22:04
24 + 4 Wikipedia

24 0 0 0 OA 原爆被爆者の健康管理としての温泉療法

著者: 八田秋
出版者: 一般社団法人日本温泉気候物理医学会
雑誌: 日本温泉気候物理医学会雑誌 (ISSN:00290343)
巻号頁・発行日: vol.32, no.1-2, pp.23, 1968-12-25 (Released:2010-08-06)

2022-09-13 21:03:50
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24 0 0 0 OA K3-4 牛肉および癌組織のエストロゲン濃度 : ホルモン剤使用牛肉の摂取とホルモン依存性癌発生増加との関連(高得点演題6 腫瘍,高得点演題プログラム,第62回日本産科婦人科学会学術講演会)

著者: 半田,康
出版者: 日本産科婦人科学会
雑誌: 日本産科婦人科學會雜誌
巻号頁・発行日: vol.62, no.2, 2010-02-01

2022-09-12 21:16:38
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https://dl.ndl.go.jp/info:ndljp/pid/10722771

24 0 0 0 OA 日本産淡水海綿の概説および日本産の種について

著者: 益田芳樹
出版者: 日本動物分類学会
雑誌: タクサ:日本動物分類学会誌 (ISSN:13422367)
巻号頁・発行日: vol.20, pp.15-22, 2006-02-20 (Released:2018-03-30)
参考文献数: 44

All species of freshwater sponges belong to the suborder Spongillina (Phylum Porifera) and are classified into seven families. Some families (such as Spongillidae comprising about 150 species) are geographically widespread, while others (such as Lubomirskiidae) are endemic to small areas. Spicules exsist in a variety of forms and are most important in the identification and classification of species and higher taxa. Other important key characters for identification are size, form and structure of gemmules, the gemmule coat, and micropyle. Most freshwater sponges produce gemmules, which are resistant bodies and asexual propagules. In Japan, the timing of gemmule production varies among species. Some species are hatched from gemmules in early spring and produce gemmules in early summer when water temperatures have not reached the maxima. Green color of freshwater sponge bodies is caused by the presence of algal symbionts. The algal symbionts are classified into two major groups based on the presence or absence of pyrenoid. In Spongilla lacustris, transfer of symbionts from parents to the next generation has been observed in both sexual and asexual reproduction. The classification of symbionts in several sponge species is currently under investigation using culture and molecular biological methods. Whether host specificity exists in these symbiotic algae is also under investigation. All Japanese species belong to the family Spongillidae. The Japanese species have been classified into 25 species in 11 genera. Recently, Heterorotula multidentata and Trochospongilla pennsylvanica have conspicuously increased in their geographical range in Japan, although they were not recorded before World War II. They may be exotic species introduced by human activity.