著者

上田 智也 江南 和幸 藤原 学

出版者

公益社団法人 日本分析化学会

雑誌

分析化学 (ISSN:05251931)

巻号頁・発行日

vol.69, no.9, pp.505-513, 2020

被引用文献数

1

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<p>For the four paintings in the first volume of the Nara-ehon "Taketori Monogatari", made in the early Edo period (1661-1681), point and two-dimensional analyses were carried out with an X-ray analytical microscope at room temperature under atmospheric conditions. The fluorescent X-ray spectrum of the washi used confirmed the presence of small amounts of Si, P, S and K, and it was very similar to that of a Torinoko-gami that was quite expensive but common in Japan of the Edo era. By point analyses of the four paintings, various pigments, such as vermillion (HgS), minium (Pb₃O₄), marachite (Cu₂CO₃(OH)₂), azurite (Cu₃(CO₃)₂(OH)₂), chalk (CaCO₃), gold and silver, were found to be used. The point analyses were performed on the eight gray-blue areas in the four paintings. In all parts Co was detected together with Si, Fe and As. These results suggest that a cobalt ore with a high probability of smalt was selected for coloring gray-blue. There are three types of blue colorants in the fourth painting: azurite, indigo as a dye and the cobalt ore. It was confirmed that the production period of the Nara-ehon "Taketori Monogatari" was in the early Edo period consistent with its appraisal.</p>

著者

坂本 昭二 倉石 沙織 小田 寛貴 江南 和幸 岡田 至弘 安 裕明 池田 和臣 河野 益近

雑誌

じんもんこん2010論文集

巻号頁・発行日

vol.2010, no.15, pp.19-26, 2010-12-04

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本研究では、4世紀の李柏文書から20世紀までの古文書等の様々な料紙を対象として、これらの料紙を科学的に分析したデータを用いて料紙の比較分類を試みた。まず、紙の色情報によって料紙の分類を行った。この結果、時代的に古い紙は比較的黄色味を帯びた暗い色をしているが、新しい紙では黄色味が減少して白い紙が多いことを示した。次に、蛍光X線元素分析によって料紙に含まれる元素の種類を調べ、時代的に古い紙が含む元素の種類数は多く、新しい紙に含まれる元素の種類数は少ないことを示した。特に大谷文書の多くに元素Fe, Ti, Alが含まれていることを確認した。

著者

佐藤 克也 山本 蒼馬 中原 佐 南 和幸 藤澤 正一郎

出版者

一般社団法人 日本機械学会

雑誌

バイオエンジニアリング講演会講演論文集

巻号頁・発行日

vol.2018, 2018

著者

中島 雄太 楊 寅 南 和幸

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌E(センサ・マイクロマシン部門誌) (ISSN:13418939)

巻号頁・発行日

vol.133, no.12, pp.358-364, 2013-12-01 (Released:2013-12-01)

参考文献数

13

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This paper presents a cell compression stimulus microdevice intended to evaluate the real-time response of cells to compression stimuli. The presented device consists of cell inlet ports, a pressure inlet port, a gasket, microchannels, culture chambers, and a diaphragm on the culture chamber for applying compressive pressure to cells. Compression stimuli applied to the cells can be controlled by regulating the expansion of the diaphragm via a pressure control. The device permits the observation of cellular responses to compressive pressure in real time because it is made of transparent materials and stimulates the cells without deforming the cell culture surface, when observed by optical microscope. We observed the cellular deformation and response behavior using a fabricated microdevice in real time. The changes of intracellular calcium concentration before and after compressive stimuli were observed by the fabricated device. Also, the intracellular maximum strain part and strain distribution of a cell that received compression stimulus were clarified by FEM analysis. These results indicate the device is expected to clarify the cellular mechanoreceptor mechanisms and signal transduction pathways and facilitate the control of stem cell differentiation by a combination of the experimental results and FEM analysis results.