著者
関尾 史郎
出版者
上智大学史学会
雑誌
上智史学 (ISSN:03869075)
巻号頁・発行日
no.22, pp.p93-102, 1977-11

佐藤直助・江上波夫両教授古稀記念号
著者
鶴田 新生 上野 俊士郎 大貝 政治 山田 真知子
出版者
日本水産學會
雑誌
日本水産学会誌 (ISSN:00215392)
巻号頁・発行日
vol.53, no.1, pp.141-144, 1987
被引用文献数
2 5

The seasonal and horizontal distributions of <i>Skeletonema costatum</i> (GREV.) CLEVE were observed five times in the surface water of Yatsushiro Sea, Kumamoto and Kagoshima Prefectures, from October 1983 to November 1984. Numerically, <i>S. costatum</i> was by far the most important phytoplankton, with two maxima in February and in August. In terms of cell number, this species amounts to more than 50% of the total phytoplankton whenever the community density is more than 10<sup>5</sup> cells/<i>l</i>. The first maximum in February seems to be triggered by the release from zooplankton grazing pressure, since the high cell density of <i>S. costatum</i> and the high concentration of DIP were observed widely in Yatsushiro Sea. The second maximum in August seems to be attributed to the nutrients supplied through R. Kuma, since a marked horizontal gradient of <i>S. costatum</i> strongly related to those of salinity and DIP.
著者
多田 狷介
出版者
東洋史研究會
雑誌
東洋史研究 (ISSN:03869059)
巻号頁・発行日
vol.26, no.4, pp.160-183, 1968-03
著者
犬山 茂
出版者
日本作物学会
雑誌
日本作物學會紀事 (ISSN:00111848)
巻号頁・発行日
vol.49, no.2, pp.226-231, 1980-06-30

This experiment was conducted to evaluate the effect of the amount of irrigation water on growth and grain yield of grain sorghum during drought stress period and to make efficient use of irrigation water under four treatments : 0, 1, 2 and 3 irrigations per week. Twenty millimeters of water was applied at each irrigation time. Irrigation water was applied from July 12 to Augllst 2, when grain sorghum was heading time through milk stage. Leaf water potentials measured by pressure chamber (Daiki Rika K.K.) were affected by the quantity of irrigation water and lowered by less amount of irrigation water. The recovery of leaf water potential by irrigation was 2 to 3 bars and the difference of leaf water potential between well irrigated treatment (3 irrigations per week) and others was enlarged when drought stress was accelerated. Two irrigation treatment never became lower than - 19 bars which is a critical point of grain sorghum when stomata close. Leaf diffusive resistance measured by porometer (Lambda Instruments Corp.) was high in no and one irrigation treatments. However, it was low in two and three irrigation treatments and no difference was recognized between them. Top growth of grain sorghum was slowered and stopped by drought stress and its recovery after drought was small. Stressed top growth was mainly due to slow development of grain head and decay of lower leaves. Grain yields decreased as the amount of irrigation water decreased, but no statistical difference was recognized between well irrigated and two irrigation treatments. Reduced grain yields were attributed to low 1,000 grain weight. From the results of grain yield and difference between evapotranspirations and the amounts of irrigation water during drought stress period, drought damage will be reduced by irrigation of about 40 millimeters of water a week.
著者
山田 洋次 原田 亮介
出版者
日経BP社
雑誌
日経ビジネス (ISSN:00290491)
巻号頁・発行日
no.1184, pp.128-131, 2003-03-24

問 「たそがれ清兵衛」は中高年層を中心に共感を呼んでいます。主人公は、不器用だけれども誠実で誇りを持った下級藩士です。山田監督は、主人公、清兵衛の姿を造形するに当たっては、今の世相をかなり織り込もうと考えましたか。 答 それはあります。江戸時代の下級武士がどんなふうに1日を暮らしていたのかは実はよく分かっていません。