著者

小川 歩人 Ogawa Ayuto オガワ アユト

出版者

大阪大学大学院人間科学研究科『共⽣学ジャーナル』編集委員会

雑誌

共生学ジャーナル (ISSN:24326755)

巻号頁・発行日

vol.1, pp.91-97, 2017

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Duke University Press, 2007, 544頁

著者

小川 歩美 山下 ユミ 加藤 諭

出版者

デジタルアーカイブ学会

雑誌

デジタルアーカイブ学会誌 (ISSN:24329762)

巻号頁・発行日

vol.6, no.4, pp.173-174, 2022-11-01 (Released:2023-01-05)

著者

栗田 敬 熊谷 一郎 市原 美恵 小川 歩実 熊谷 美智世 永田 裕作 香西 みどり

雑誌

日本地球惑星科学連合2019年大会

巻号頁・発行日

2019-03-14

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Karinto is one of the typical traditional sweets, which is classified as a puffed confectionery. When we examine the cross section of karinto we can recognize amazing resemblance to the texture of vesiculated pyroclastic materials. This gives us an idea that the formation mechanism of karinto seems collateral to that of pumice and scoria in volcanic process and it would help deep understanding of magmatic vesiculation process. This is the starting point of our research on karinto.Here we report experimental investigation on the formation of karinto,cooking process. Particularly we focus on the sound generation during the cooking to characterize vesiculation process. The basic material of the starting dough is flour,baking soda,sugar and water. Baking soda and water determine volatility of the sample. Heating induces vaporization of water and thermal decomposition of baking soda, which result in volume-expansion and create a peculiar vesiculated texture. To see the control of this we tested following 4 sets of the composition;Sample A:flour 50g,baking soda 2g,sugar 10g,water 25gSample B:flour 50g,baking soda 0g,sugar 0g,water 25gSample C:flour 50g,baking soda 2g,sugar 0g,water 25gSample E:flour 50g,baking soda 0g,sugar 0g,water 30gSample A is based on the standard recipe of karinto. Sample C and E seem interesting to see the effect of volatile components.In the cooking experiment we put the dough of 50mm in length x 10mm in width x 6mm in thickness into hot oil at 180-170C. Soon after start of deep frying familiar cooking sound becomes audible. We recorded this and took movie by high speed camera to inspect size and location of bubbles which emanate from the dough. Common to all the composition the sound changes systematically; in the first several minutes continuous sound with flat spectrum to 25KHz emanates while after this high frequency component gradually decreases and prominent peaks in the spectrum appear in several hundreds Hz, which sound as "chant d'Oiseau". Associated with this transition size of bubbles which appear on the surface of dough changes from broad distribution to homogeneous. Also the vesiculation points become localized. All these observations are consistently interpreted that after 4-5minutes steady paths of the gas emission from the inside have been set up. The talented experienced patissier could discriminate the difference of the sound to inspect maturity.Only in the case of Sample E destructive explosions were observed at about 2 minutes from the start. During heating two competing processes are working inside the dough:solidification which proceeds from the outside and gas formation. Both are driven by higher temperature. When the solidification advances ahead hard shell is formed to impede escape of gas, which results in accumulation of high vapour pressure inside. This is the cause of the explosion. The standard recipe smartly avoids this route by arranging combination of the ingredients but in our experiments we seek the condition for explosion.In the presentation we report progressive evolution of the spectrum of cooking sound with textural evolution in relation with magmatic process.

著者

橋本 和幸 松本 恭実 小川 歩

出版者

了德寺大学

雑誌

了徳寺大学研究紀要 = The bulletin of Ryotokuji University (ISSN:18819796)

巻号頁・発行日

no.11, pp.15-21, 2017

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本稿は,2015年度1年間の学生相談室の利用状況を報告するものである.2012年に非常勤相談員が全員交代したことと,芸術学部の募集が停止となったことの影響で減少していた利用件数が,徐々に増加している.相談内容は,人間関係に関するものが最も多かった.来談経路は学生の自主的な来談が最も多かったが,相談員の授業を受けたことがあることを理由に挙げる学生も多かった.In this study, we examined the use of student counselling during 2015. Overall there has been an increase even though it had previously been in decline due to change in part time counsellors and recruitment of the art department was suspended. Most of the students' consultation was about the human relationship. Most of the students came to the counseling of their own volition, however some students came to the counseling as part of their own studies.

著者

小川 歩人 オガワ アユト Ogawa Ayuto

出版者

大阪大学大学院人間科学研究科 社会学・人間学・人類学研究室

雑誌

年報人間科学 (ISSN:02865149)

巻号頁・発行日

vol.36, pp.157-161, 2015-03-31