著者
河村 功一
出版者
日本生態学会
雑誌
保全生態学研究 (ISSN:13424327)
巻号頁・発行日
vol.18, no.2, pp.239-242, 2013-11-30

Rhodeus atremius, an endemic bitterling fish from Japan, comprises two endangered subspecies: R. a. atremius and R. a. suigensis. The latter subspecies, designated as a Nationally Endangered Species of Wild Fauna and Flora by the Ministry of Environment of Japan, is noted for drastic declines and the extinction of local populations through habitat deterioration. Despite their strong phenotypic resemblance, these two subspecies are much diverged in DNA, each forming a distinct evolutionary lineage. Nevertheless, these two subspecies were clumped into a single subspecies, R. smithii smithii, in a newly published fish encyclopedia, which will lead to R. a. suigensis being dropped from the list of Nationally Endangered Species. This paper critically reviews the validity of this new taxonomic arrangement of R. atremius, including R. a. suigensis, based on phylogenetic systematics. Its potential risk against the conservation management of R. a. suigensis is specifically discussed.
著者
田中 耕太郎 根岸 明 増田 俊久
出版者
一般社団法人 日本機械学会
雑誌
日本機械学会論文集 B編 (ISSN:03875016)
巻号頁・発行日
vol.58, no.553, pp.2857-2862, 1992-09-25 (Released:2008-03-28)
参考文献数
13

The replacement of working fluid of the alkali metal themoelectric converter (AMTEC) is eminently suitable for achieving higher performance under lower operating temperatures. Potassium is a reasonable condidate because it has lower latent heat of vaporization and higher vapor pressure than sodium over the AMTEC operating conditions. The performance of the AMTEC cycle with potassium as the working fluid has been evaluated and discussed based on the recently reported ionic conductivity data of potassium-β"-alumina solid electrolyte. The calculated results show that the replacement of working fluid increases the peak efficiency from 28% to 31% at 1100K with 1mm thick β"-alumina solid electrolyte. If the thinner solid electrolyte is practically developed, the improvement of the performance can obviously be recognized because of the decrease of ionic conductivity.
著者
今在 慶一朗 今在 景子
出版者
日本社会心理学会
雑誌
社会心理学研究 (ISSN:09161503)
巻号頁・発行日
vol.26, no.2, pp.119-130, 2010

Thibaut & Walker (1975) argued that disputants perceive fairness and are satisfied through a procedure which is easy to control because they intend to maximize their interests in a civil action. In such a theory, it is considered that the nature of procedural justice which disputants feel is satisfaction with the self-interest. However, in this study, we predicted that people would distinguish concern for procedural justice from concern for self-interest. The disputant's concern for self-interest would not be unlimited and the impression that the benefit is maximized within fair procedure would repress their feeling of relative deprivation and promote their acceptance of the result. We conducted research on people who engaged in a trial as disputants of civil actions and made an analysis of advantageous respondents, disadvantageous respondents, juridical persons, natural humans, and all respondents. It was confirmed that procedural justice promotes acceptance of a result through the restraint of relative deprivation.
著者
山元 孝広
出版者
一般社団法人 日本地質学会
雑誌
地質学雑誌 (ISSN:00167630)
巻号頁・発行日
vol.122, no.3, pp.109-126, 2016-03-15 (Released:2016-06-21)
参考文献数
62
被引用文献数
8

赤城火山,新期成層火山の軽石流堆積物と降下軽石堆積物の対比と噴出物のマグマ体積の計測を行い,マグマ噴出量時間階段図を作成した.火山体形成期(約22-15万年前)に続く軽石噴火期には,5.8万年前の赤城カルデラ形成噴火前に,マグマ噴出率の低下期が起きている.軽石の微量元素成分組成の特徴は,K2O量の高い珪長質マグマほど下部地殻部分溶融メルトの関与が大きいことを示しており,下部地殻へのマグマの大量貫入を契機にマグマ噴出率などの活動様式の変化が起きたことを示唆している.
著者
木場 一夫
出版者
社団法人日本動物学会
雑誌
動物学雑誌 (ISSN:00445118)
巻号頁・発行日
vol.50, no.1, pp.13-21, 1938-01-15

The present paper deals with the morphological peculiarities and the habitats Branchinella kugenumaensis (C. ISHIKAWA) found in Manchoukuo. 1. The occurrence of this species in Manchoukuo has been known from Mukden, Anzan and Kaizyo. 2. It is found always in astatic waters which are as warm as 29°-34℃ in summer and are neutral or often remarkably alkaline (pH 7.0-8.5). 3. The time of its first appearancein Mukden has yet been ascertained, but it entirely disappears in the latter half of September. 4. The morphological peculiarities and the coloration in life in the Manchurian forms are given in detail. 5. The total length of the body attains 35mm in the largest female specimen collected in Mukden in September. Such a large specimen has never been recorded in any other localities. 6. The number of eggs in the ovisac was from 336 to 915 in the three matured females collected in Mukden.

3 0 0 0 OA 草花百種

著者
幸野楳嶺, 幸野西湖 画
出版者
山田芸艸堂
巻号頁・発行日
vol.2編 上, 1904
著者
香野 毅
出版者
日本特殊教育学会
雑誌
特殊教育学研究 (ISSN:03873374)
巻号頁・発行日
vol.48, no.1, pp.43-53, 2010-05-31

発達障害児の姿勢や身体の動きにおいて、その発達的偏りや弱さ、苦手さが観察されることが少なくない。ここではまず、広汎性発達障害、ADHD、LD、発達性協調運動障害について、それぞれの障害における姿勢や身体の動きに関する研究を取り上げた。彼らが姿勢の安定性やバランス、協調運動、粗大運動、微細運動などといった面に困難さを有していることが見いだされ、さらにそれぞれの障害のもっている特徴も報告されつつある。次に姿勢や身体の動きと認知、行動、感情の関係についてこれまでの研究を概観した。最後に、発達障害児の姿勢や身体の動きに対してアプローチしている3つの指導法を紹介した。姿勢や身体の動きが彼らを理解する際のひとつの側面であること、かつ種々の困難さへの治療教育的なアプローチの窓口として活用することを提案した。
著者
深海 菊絵
出版者
くにたち人類学会
雑誌
くにたち人類学研究 (ISSN:18809375)
巻号頁・発行日
vol.5, pp.1-20, 2010

本論の目的は、米国におけるポリアモリー実践の事例から、「愛」や「親密性」に関わる事象を主題とする90年代以降の人類学的研究の分析枠組みを再考し、今後の研究に必要な視座を提示することである。近年の愛や親密性を主題とする研究は、社会規範との関連でそれらを論じる傾向が際立っている。これらの研究は、親密な関係が築かれる舞台の権力構造を明らかにしてきた。しかし、自律的主体が想定されているため、偶発的で予測不可能な他者との関係性を当事者たちがいかに生きているのか、という点を捉えきれない。そこで本論では、バトラーの「≪対格≫の私」論、田中の誘惑論を手掛かりに、先行研究が看過してきた領域に光を当ててみたい。本論では、主体形成の能動的側面だけでなく受動的側面に着眼することにより、自律的主体ともみえるポリアモリー実践者たちが自らの意志を越えて他者とつながるあり様を考察していく。
著者
清瀬 卓
出版者
イタリア学会
雑誌
イタリア学会誌 (ISSN:03872947)
巻号頁・発行日
no.45, pp.100-130, 1995-10-20

I quindici libri della Genealogia deorum gentilium di Giovanni Boccaccio sono un vero corpus mythologicum del Trecento che ebbe buona fortuna nei secoli successivi nella cultura europea.Malgrado il valore di primaria importanza che ha questo lavoro negli studia humanitatis nell'autunno del Medioevo, ci pare non sia ancora tanto studiato e riconosciuto quanto il Decameron capolavoro del Boccaccio narratore, da parte dei cultori sia della storia dell'Umanesimo che della letteratura italiana, eccetto l'insuperabile Hortis che svolse ricerche sulle fonti delle opere latine. Nel presente saggio, attraverso una lettura analitica del testo latino del libro XIV, abbiamo provato a mettere in chiaro l'idea boccaccesca della poesia, che verra considerata come un punto di riferimento per gli studi sulla teoria letteraria nel Rinascimento italiano. Mentre il libro XV tratta di un tipo dell'apologia del poeta stesso che, quindi, racconta in un modo autobiografico la sua passione verso la poesia, il libro anteriore costituisce non solo le invectiva contro tutti quanti hanno capito male la poesia, ma anche l'encomion poesis dove il Boccaccio poeta verifica l'origine e la caratteristica dell'ideale poesia antica e moderna, spiegando nello stesso tempo come tema principale l'esegesi della fabula, ad esempio, nella historia della Dido virgiliana. I discorsi delle invectiva sono fatti contro gli undici argomenti proposti dagli accusatori : sull'inutilita della poesia ; sulla favolosita dei poeti ; sulla loro mancanza di eleganza e di urbanita ; sull'oscurita della poesia ; sulle sue bugie ; sulla sua lascivia e la sua vanita ; sulla sua decadenza morale ; sulla scimmia-imitatrice del filosofo ; sul pericolo della lettura della poesia ; sul buttar via i poeti dalla citta ; sul rifiuto assoluto delle "eorum<scenicas meretriculas>". Secondo Boccaccio, tutte le accuse derivano dal fatto che la maggior parte degli accusatori non ebbero ne voglia di capire la favola della poesia antica ne seppero interpretarla in modo giusto per penetrare la verita nascosta sotto la figura poetica, che e uguale a quella filosofica.E naturale che l'ultimo scopo delle invectiva sia la valutazione dell'ars poetica come la vera scienza ovvero la vera facultas tra le altre discipline e percio il riconoscimento del ruolo istruttivo assegnato alla poesia per la formazione umanistica della gioventu.