著者

桐野 文良 大野 直志 田口 智子 根津 暁充 横山 亮一

出版者

公益社団法人 日本金属学会

雑誌

日本金属学会誌 (ISSN:00214876)

巻号頁・発行日

2019

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<p>The production processes of old Japanese coins, <i>Genbun-koban</i>, <i>Akita-ginban</i> and <i>Morioka-ginban</i>, were studied. These coins were manufactured by a forging method in the <i>Edo</i>-era. <i>Genbun-koban</i>, manufactured at a gold mint of the <i>Tokugawa</i> shogunate called <i>Kinza</i>, in 1736, is made of Au-Ag alloy and its surface is not flat. The residual stress of this coin is compressive, and the residual stress in the stamped area is higher than that in the flat area. The <i>Iroage</i> method was used to color the coin; it is a thermal treatment, resulting in lows the residual stress is smaller at flat area. <i>Akita-ginban</i>, manufactured in the <i>Akita</i> domain in 1863 is made of pure Ag and its surface is also not flat. There is no residual stress in this coin. This result shows that the thermal treatment of this coin was carried out after processing. <i>Morioka-ginban</i>, manufactured in the <i>Morioka</i> domain in 1868, is made of pure Ag, and its surface is flat. The residual stress of this coin is compressive, and the residual stress in the stamped area is higher than that in the flat area. This result shows that the thermal treatment was not carried out after processing. These coins manufactured in the <i>Edo-</i>era thus had different thermal treatments.</p>

著者

桐野 文良 大野 直志 田口 智子 根津 暁充 横山 亮一

出版者

公益社団法人 日本金属学会

雑誌

日本金属学会誌 (ISSN:00214876)

巻号頁・発行日

pp.J2018048, (Released:2019-03-01)

参考文献数

12

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The production processes of old Japanese coins, Genbun-koban, Akita-ginban and Morioka-ginban, were studied. These coins were manufactured by a forging method in the Edo-era. Genbun-koban, manufactured at a gold mint of the Tokugawa shogunate called Kinza, in 1736, is made of Au-Ag alloy and its surface is not flat. The residual stress of this coin is compressive, and the residual stress in the stamped area is higher than that in the flat area. The Iroage method was used to color the coin; it is a thermal treatment, resulting in lows the residual stress is smaller at flat area. Akita-ginban, manufactured in the Akita domain in 1863 is made of pure Ag and its surface is also not flat. There is no residual stress in this coin. This result shows that the thermal treatment of this coin was carried out after processing. Morioka-ginban, manufactured in the Morioka domain in 1868, is made of pure Ag, and its surface is flat. The residual stress of this coin is compressive, and the residual stress in the stamped area is higher than that in the flat area. This result shows that the thermal treatment was not carried out after processing. These coins manufactured in the Edo-era thus had different thermal treatments.

著者

(株)情報科学技術協会 山本 昭 村田 祐子 吉野 敬子 井上 孝 光富 健一 神尾 達夫 斎川 悠子 藤田 節子 春山 暁美 原田 智子 高橋 正美 横山 亮一 小倉 三枝子 木本 幸子 大谷 康晴 八木 昇 山下 泰弘 戸塚 隆哉

出版者

社団法人情報科学技術協会

雑誌

情報の科学と技術 (ISSN:09133801)

巻号頁・発行日

vol.46, no.11, pp.631-640, 1996-11-01

被引用文献数

1

著者

熊谷 正芳 横山 亮一

出版者

公益社団法人 日本材料学会

雑誌

材料 (ISSN:05145163)

巻号頁・発行日

vol.69, no.3, pp.277-283, 2020-03-15 (Released:2020-03-20)

参考文献数

40

被引用文献数

2

著者

山崎 久道 高橋 正美 原田 智子 藤田 節子 横山 亮一 吉野 敬子

出版者

一般社団法人 情報科学技術協会

雑誌

情報の科学と技術 (ISSN:09133801)

巻号頁・発行日

vol.43, no.9, pp.824-842, 1993-09-01 (Released:2017-05-30)

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シソーラスの評価をおもに,利用者の観点から行うための評価基準を開発した。これまでの,評価の試みや作成のガイドラインが,語の取扱いや表示に重点をおいているのに対して,情報源(おもにデータベース)と利用者との結節点としてシソーラスが機能しているかどうかの評価項目に重点をおいた。評価基準は,52項目からなり,1.シソーラスの作成方針と作成方法,2.シソーラスの仕様,3.語および語間の関係,4.シソーラスの表示,の4部分に大別される。評価基準を用いた評価の試行も行った。

著者

横山 亮一

巻号頁・発行日

2013

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Thesis (Ph. D. in Engineering)--University of Tsukuba, (B), no. 2623, 2013.1.31