著者
今泉 吉典
出版者
裳華房
雑誌
遺伝 (ISSN:03870022)
巻号頁・発行日
vol.36, no.5, pp.p4-8, 1982-05
著者
今泉 吉典
出版者
国立科学博物館
雑誌
国立科学博物館専報 (ISSN:00824755)
巻号頁・発行日
vol.1, pp.84-91, 1968
被引用文献数
2

Three hundred specimens of small mammals, belonging to 10 species, were collected in Mt. Goyo (about 15km west of Kamaishi City, Iwate Pref.) and Mt. Hayachine (about 40km southeast of Morioka City, Iwate Pref.) during a short trip in the early summer of 1967. The most interesting mammals among them was Euroscaptor mizura mizura (GUNTHER, 1880) which was collected at the upper part of Tatamiishi (1100m alt.), Mt. Goyo. The subspecies is a rare animal in Japan and the specimen obtained here is the 8th record from the country, and, at the same time, new to the Tohoku district, Honshu. One of the most difficult problems of taxonomy among the Japanese small mammals is the status of Aschizomys andersoni (THOMAS, 1905) from northern Honshu. Twenty-one specimens of this species were collected during the trip to Mt. Goyo and Mt. Hayachine, and studied statistically by a simplified method employing the association coefficient in numerical taxonomy. The dendrogram (Fig. 1) made by the method clearly expresses the similarity of the Goyo-Hayachine populations to the population from Mt. Zao and, onthe other hand, the distinction between them and the other populations of central Honshu. These morphological relationships and the differentiation of the vertical distribution recognized among groups of Aschizomys in Honshu indicate the specific distinction of Aschizomys andersoni, which is represented by the populations of Mt. Goyo, Mt. Hayachine or Mt. Zao, from A. niigatae of central Honshu. The small mammal fauna of Mt. Goyo is peculiar among those of mountains of the Tohoku district in having the combination of Euroscaptor mizura mizura and Aschizomys andersoni, while that of Mt. Hayachine seems to be similar to the latter, although it could not be fully clarified by the present survey.
著者
今泉 吉典
出版者
国立科学博物館
雑誌
国立科学博物館専報 (ISSN:00824755)
巻号頁・発行日
vol.5, pp.131-149, 1972
被引用文献数
8

According to the investigation executed by the party from the National Science Museum, Tokyo, in the summers of 1970 and 1971,the small mammal fauna of the Hidaka Mountains, Hokkaido, is fairly different from most of the plains but rather similar to that of Rishiri Island, a small island off the northern extremity of the main island, in the combination of important species. They resemble each other not only in the presence of a vole of the Clethrionomys rex group and a tiny shrew nearly related to Sorex gracillimus THOMAS, 1907,but also in the absence of Sorex shinto saevus THOMAS, 1907,one of the two common shrews in the plains of the main island of Hokkaido. Voles of the rex group, containing Clethrionomys rex IMAIZUMI, 1971,of Rishiri Island and C. montanus sp. nov. of the Hidaka Mountains, are evidently more primitive in several external, cranial and dental characters than those of the rufocanus group, which contains C. bedfordiae (THOMAS, 1905) of the main island of Hokkaido and C. sikotanensis (TOKUDA, 1935) of Rishiri I. and Shikotan I. of the Habomai Islands. Moreover, within the respective groups, the forms of small islands are less advanced than those of the main island as shown in Fig. 1. These nearly related forms belonging to the same clade with compete each other when they are in a sympatric condition of distribution, because they are probably poorly differentiated in the ecological niche. In such cases more advanced forms tend to destroy the primitive ones, as clearly seen in three lineages of Japanese moles, Mogera minor, M. wogura and M. kobeae (IMAIZUMI, 1964). A lineage, here used by the author, is a taxon applied not only to good species but also ill-defined hemispecies or even some of subspecies based on the biological species concept, and differs from other lineages by the relative time of emergence or of animated expansion of the distribution. Such competition may be more violent in a combination of nearest two lineages than that of rather remote ones, as the former is less different in physical characters and also in ecological niches than the latter. Evident correlations between the degree of specialization and the relative time of emergence of taxa have been confirmed among the lineages of the glareolus group, of the Japanese moles, etc. If this is acceptable as a general rule, the earliest of the four lineages of the voles that arrived in the Hokkaido district might be Clethrionomys rex, now confined to Rishiri Island (Fig.1). At first probably C. rex and then C. sikotanensis expanded their distribution nearly all over the district. Later, both of the populations were exterminated from the main island of Hokkaido through violent competitions with newly arrived and more advanced lineages, C. montanus of the former group and C. bedfordiae of the latter one. On the other hand, not so violent but rather loose competitions have been carried on between these conquerors, and montanus was gradually exterminated from the plains and finally almost confined to the alpine and subalpine zones of the Hidaka Mountains. Very similar process of emergences and competitions might be carried out between Sorex shinto saevus and a tiny shrew similar to Sorex gracillimus. The former, which has now nearly exterminated tha latter from the plains of the main island, probably failed to invade into Rishiri Island because of its later arrival. Thus, the similarities between the small mammal faunas of Rishiri Island and the high mountain zone of Hidaka Mountains can easily be understood as a result of successive appearances and expansions of slightly advanced lineages in the same clade and violent competitions between them which can be hindered by some topographical factors.
著者
今泉 隆裕
出版者
桐蔭横浜大学
雑誌
桐蔭論叢 (ISSN:13413805)
巻号頁・発行日
no.36, pp.127-138, 2017-06
著者
今泉 均 角田 一眞 渡辺 明彦 升田 好樹
出版者
THE JAPAN SOCIETY FOR CLINICAL ANESTHESIA
雑誌
日本臨床麻酔学会誌 (ISSN:02854945)
巻号頁・発行日
vol.8, no.4, pp.343-347, 1988-07-15 (Released:2008-12-11)
参考文献数
12

虚血性心疾患の既往のない, 69歳男性の腹部大動脈瘤破裂の緊急手術前に, 中心静脈カテーテル挿入のため右内頸静脈穿刺時, 突然STの上昇と共に徐脈, 血圧低下を認めた. 腹部大動脈瘤患者では高率に冠動脈疾患を合併することから, 冠動脈硬化による冠動脈血管の tonus の亢進した状態下に, 中心静脈穿刺時の迷走神経刺激が誘因となって冠動脈スパズムが発生したものと考えられた.明らかな虚血性心疾患の既往がなくても全身的に高度な動脈硬化性疾患を有する患者の麻酔管理においては, 冠動脈硬化病変の存在並びに冠動脈血管の tonus の亢進によって, 冠スパズムや重症な不整脈の発生し易いことを十分に念頭におくべきである.
著者
今泉 寿明
出版者
日本超心理学会
雑誌
超心理学研究 (ISSN:1343926X)
巻号頁・発行日
vol.2, no.1, pp.21-34, 1997-04-25 (Released:2017-08-09)
参考文献数
11

マスメディアや噂話によって世間一般に流通する通俗的な超常現象、すなわち超常現象フォークロアの知識量を正確に測定するために、記号選択式テスト40項目(20設問×2問題、得点レンジ0〜40)からなる超常現象知識尺度(PKS-40 ; 40-item Paranormal Folklore Knowledge Scale)を作成し、再試験信頼性、内的整合性による信頼性、内容妥当性を確認した。テスト項目は一般向けの超常現象事典、用語集から抽出した。PKS-40を大学、短大、専門学校の学生に実施し、1,230名(年齢18〜25歳、男性436名、女性794名)のデータを解析した。項目ごとの正答率は1.0〜98.0%であった。得点の分布は左右対称の単峰性であり、平均値は20.9(標準偏差6.3、最小値1、最大値38であった。得点は男性においてやや高く、また、学校、専攻課程により差を認めた。

1 0 0 0 OA 故実叢書

著者
今泉定介 編
出版者
吉川弘文館
巻号頁・発行日
vol.安斉随筆(伊勢貞丈), 1906
著者
今泉 光雅 松井 隆道 大槻 好史 菊地 大介 佐久間 潤 室野 重之
出版者
一般社団法人 日本耳科学会
雑誌
Otology Japan (ISSN:09172025)
巻号頁・発行日
vol.29, no.3, pp.245-251, 2019

<p>聴性脳幹インプラント(auditory brainstem implant: ABI)は,蝸牛神経に障害を受けた際に,中枢側である脳幹の蝸牛神経核に電気刺激を加え,聴覚を獲得させることを目的とする人工聴覚器である.今回我々は,両側の聴神経腫瘍術後,高度難聴に至りABI埋め込み術を施行した症例を経験し,術後1年間の経過観察する機会を得たので報告する.症例は44歳,女性.両側の聴神経腫瘍術後,高度難聴に至ったためABI手術を脳神経外科と共同で行った.ABI術後1年を経過し語音明瞭度検査は,術前が単語0%,文章0%,読唇併用の際は単語32%,文章46%であったものが,単語4%,文章0%,読唇併用の際は,単語68%,文章43%と改善を認めた.ABI単独での会話は困難な状態であるものの環境音の聴取は可能となった.両側聴神経腫瘍術後症例に対するABI埋め込み術は,聴覚獲得の一手段になり得ると考えられた.</p>

1 0 0 0 OA 故実叢書

著者
今泉定介 編
出版者
吉川弘文館
巻号頁・発行日
vol.拾芥抄(洞院公賢著 洞院実煕補), 1906

1 0 0 0 OA 故実叢書

著者
今泉定介 編
出版者
吉川弘文館
巻号頁・発行日
vol.織文図会(松岡辰方撰 本間百里補), 1906