著者

小嶋 信博 岡 壽士 宮山 信三 浜井 直人 岩井 裕子 木村 一雄

出版者

昭和大学学士会

雑誌

昭和医学会雑誌 (ISSN:00374342)

巻号頁・発行日

vol.47, no.4, pp.601-604, 1987-08-28 (Released:2010-09-09)

参考文献数

7

被引用文献数

1

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経肛門的直腸異物を2例経験したので報告する, 症例1: 25歳, 男性。自慰行為にてウイスキーのミニボトルを経肛門的に挿入.腰椎麻酔下にて非観血的に異物を抜去したが, 術後2日目になって腹膜刺激症状, 腹腔内遊離ガス像が出現開腹手術を施行し, 直腸前壁に穿孔を認めた, 症例2: 36歳, 男性自慰行為にてシャンプー瓶を経肛門的に挿入, 腰椎麻酔下にて非観血的に異物を抜去し, 術後経過は順調であった.本邦においては経肛門的異物の報告は少いが, 今後は増加することが予想され, その治療には苦慮する点も多い.われわれの経験した2症例に若干の文献的考察を加えて報告する.

著者

佐藤 理 岩井 裕 吉田 英生

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 (ISSN:21879761)

巻号頁・発行日

vol.85, no.871, pp.18-00365, 2019 (Released:2019-03-25)

参考文献数

18

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The purpose of this study is to develop an analytical model of cross-flow heat exchangers with offset strip fins which are usually equipped in the aircraft air conditioning system (so called the environmental control system, ECS). The ECS mainly consists of four cross-flow heat exchanges, i.e., a primary heat exchanger, a secondary heat exchanger, a reheater and a condenser. Because of the special requirements of the design for the aircraft, the primary and secondary heat exchangers are set adjoiningly; the reheater and the condenser are also set adjoingly. Therefore, in both the pairs, the effect of the temperature profile of the upstream component (the secondary heat exchanger or the reheater) on those of the downstream component (the primary heat exchanger or the condenser) should be taken into account for precise prediction of the system. To this end, a core element model was newly proposed in this study. In addition to the effect of temperature profile, phase changes (condensation and evaporation) of water included in the humid air simultaneously occur except for the primary heat exchanger. Regarding these phenomena, the method of sensible heat fraction (SHF) to convert the latent heat into the equivalent sensible heat was introduced, and the global and local SHF models were examined by comparison with the experiments. The prediction by these models were found to agree well with the actual performance of the ECS operations.

著者

佐藤 理 岩井 裕 吉田 英生

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 (ISSN:21879761)

巻号頁・発行日

pp.18-00365, (Released:2019-02-21)

参考文献数

18

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The purpose of this study is to develop an analytical model of cross-flow heat exchangers with offset strip fins which are usually equipped in the aircraft air conditioning system (so called the environmental control system, ECS). The ECS mainly consists of four cross-flow heat exchanges, i.e., a primary heat exchanger, a secondary heat exchanger, a reheater and a condenser. Because of the special requirements of the design for the aircraft, the primary and secondary heat exchangers are set adjoiningly; the reheater and the condenser are also set adjoingly. Therefore, in both the pairs, the effect of the temperature profile of the upstream component (the secondary heat exchanger or the reheater) on those of the downstream component (the primary heat exchanger or the condenser) should be taken into account for precise prediction of the system. To this end, a core element model was newly proposed in this study. In addition to the effect of temperature profile, phase changes (condensation and evaporation) of water included in the humid air simultaneously occur except for the primary heat exchanger. Regarding these phenomena, the method of sensible heat fraction (SHF) to convert the latent heat into the equivalent sensible heat was introduced, and the global and local SHF models were examined by comparison with the experiments. The prediction by these models were found to agree well with the actual performance of the ECS operations.

著者

佐藤 理 岩井 裕 吉田 英生

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 (ISSN:21879761)

巻号頁・発行日

vol.80, no.820, pp.TEP0360, 2014 (Released:2014-12-25)

参考文献数

9

被引用文献数

4 2

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The purpose of this study is to clarify the effect of a component for high-pressure water separation, which is included in the air conditioning system of the general commercial aircrafts, on the air-cycle operation (reverse Brayton cycle); the high-pressure water separation consists of water separator and two heat exchangers called reheater and condenser, respectively. This paper briefly describes the typical system configuration of the air-cycle refrigeration progressed with evolutions in turbofan engine. Since nowadays, 4-Wheel air-cycle has been a trend on the aircraft air conditioning system, this paper theoretically shows its advantage on the basis of the thermodynamic cycle study. In the following chapters, an analysis was conducted on the interaction between a reheater and a condenser when each heat transfer performance changes from the baseline operating point. Also, the comparative study was made on the system performances by the 3-wheel and 4-wheel air-cycle. In addition, this paper describes how the heat transfer performance is designed for the reheater and the condenser under the system requirements for the entire air conditioning system.

著者

富村 寿夫 平澤 茂樹 岩井 裕 大村 高弘 小林 健一 羽田 光明 吉田 英生

出版者

一般社団法人 日本航空宇宙学会

雑誌

日本航空宇宙学会誌 (ISSN:00214663)

巻号頁・発行日

vol.53, no.621, pp.299-305, 2005-10-05 (Released:2019-04-17)

参考文献数

5

著者

吉田 英生 石部 英臣 吉冨 聡 齋藤 元浩 松井 裕樹 江川 猛 岩井 裕 坪田 宏之 桑原 健雄 金丸 一宏

出版者

The Japan Society of Mechanical Engineers

雑誌

日本機械学会論文集 B編 (ISSN:03875016)

巻号頁・発行日

vol.72, no.722, pp.2562-2569, 2006

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A hybrid bearing effectively stabilized by water evaporation from ultra-fine porous medium is proposed and its basic characteristics are clarified by numerical simulation and experiment. The proposed bearing aims to be applied to MGT (Micro Gas Turbine) and has mainly three advantages suitable for application to MGT. The first is the stability improved by water evaporation from ultra-fine porous medium. The second is the effective lubrication by liquid water at the start and stop of the journal rotation. The third is the cooling effect on the high-temperature journal due to water evaporation. A fundamental experiment from water lubrication to vapor lubrication via transition state has been carried out. The experiment indicated the potential of vapor lubrication and confirmed the stable start-up at water lubrication.

著者

篠原 徹 飯田 浩之 井上 透 金山 喜昭 杉長 敬治 濱田 浄人 佐久間 大輔 戸田 孝 桝永 一宏 松田 征也 佐々木 秀彦 五月女 賢司 半田 昌之 守井 典子 田中 善明 石川 貴敏 水澤 喜代志 佐々木 亨 柏女 弘道 大川 真 高田 みちよ 神田 正彦 岩井 裕一 土居 聡朋

出版者

滋賀県立琵琶湖博物館

雑誌

基盤研究(B)

巻号頁・発行日

2013-04-01

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博物館を対象に全国規模で定期的に実施されている2つの調査の1つである「博物館総合調査」を継承する調査を、全国の4,045館を対象に平成25年12月1日を調査基準日として実施した。そして、その結果を分析すると共に、博物館の経営・運営と博物館政策の立案上の緊急を要する課題(現代的課題)の解決に貢献できる、「博物館の使命と市民参画」「指定管理者制度」「少子高齢化時代の博物館に求められる新しい手法の開発」「博物館の危機管理」の4つのテーマ研究を行った。これらの成果は報告書としてまとめ、Webサイトに掲載して広く公開している。