著者

徳本 勇人 野村 俊之 星 英之 新居 靖崇 大谷 俊晴 野本 健太

出版者

一般社団法人 粉体工学会

雑誌

粉体工学会誌 (ISSN:03866157)

巻号頁・発行日

vol.54, no.3, pp.172-177, 2017-03-10 (Released:2017-04-22)

参考文献数

17

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Particles of additives that are ingested along with food can either adhere to the intestinal microflora or be absorbed, and these may possibly lead to illnesses caused by changes in the microflora composition. Barely 1% of Fe2O3 particles dissolve in acids present in the stomach. In addition, the direct administration of Fe2O3 particles into the stomach with a probe showed no adverse health effects. However, mixing Fe2O3 particles of a smaller diameter into food and orally administering the dose over a period of more than 2 weeks encouraged the multiplication of the diarrhea-causing Clostridium family amongst intestinal flora, indicating the cause of the diarrhea outbreak. On the other hand, multiplication of the Clostridium species was suppressed by the multiplication of another family within the intestinal flora, namely Lactobacillus. It was confirmed that by analyzing the formation of fermentation products such as hydrogen, acetic acid, and lactic acid, symptoms of diarrhea caused by the alteration of intestinal microflora composition spontaneously recovered.

著者

臼井 進之助

出版者

一般社団法人 粉体工学会

雑誌

粉体工学会誌 (ISSN:03866157)

巻号頁・発行日

vol.24, no.12, pp.798-804, 1987-12-10 (Released:2010-04-30)

参考文献数

14

被引用文献数

1

著者

石田 尚之 松坂 修二

出版者

一般社団法人 粉体工学会

雑誌

粉体工学会誌 (ISSN:03866157)

巻号頁・発行日

vol.55, no.2, pp.104-112, 2018-02-10 (Released:2018-03-20)

参考文献数

38

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???

著者

小金沢 勝 浜田 憲二 田中 貴将 仙名 保

出版者

一般社団法人 粉体工学会

雑誌

粉工誌 (ISSN:03866157)

巻号頁・発行日

vol.25, no.8, pp.500-506, 1988

被引用文献数

1 1

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Surface modification, size reduction and the improvement of energy efficiency were achieved simultaneously by using organic additives during continuous grinding with a commercial disintegrator (Cosmomizer, Nara Machinery). Triethanol amine(TEA) and toluene solution of stearic acid (SA) in varying concentrations were used as additives. While the organophilization of limestone with SA was detected, the addition of TEA caused the opposite effect. The adhesion of TEA to the limestone was tighter when it was used as a grinding aid than when it was simply added through impregnation. This was suspeted to be the result of a tribochemical reaction.

著者

田中 秀和 中林 祐治 新居 正浩 石川 達雄 中山 武典

出版者

一般社団法人 粉体工学会

雑誌

粉体工学会誌 (ISSN:03866157)

巻号頁・発行日

vol.55, no.5, pp.269-274, 2018-05-10 (Released:2018-07-10)

参考文献数

29

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In order to simulate the atmospheric corrosion of tannic acid-coated steels in industrial and coastal districts, artificial steel rust particles of α- and β-FeOOH were synthesized by aerial oxidation of aqueous Fe2+ solutions containing various amounts of tannic acid. Increasing addition amount of tannic acid accelerates the formation of amorphous iron-gallic acid complexes to suppress the generation of FeOOH rust. The crystallization and growth of α-FeOOH particles were inhibited by adding tannic acid, while those of β-FeOOH particles are markedly dependent of addition amount of tannic acid. Accordingly, it can be regarded that the tannic acid eluted from tannic acid-coated steels by atmospheric corrosion strongly affects on the formation of α- and β-FeOOH rust and the effect in coastal area is greater than urban district.

著者

小浜 弘幸

出版者

一般社団法人 粉体工学会

雑誌

粉体工学会誌 (ISSN:03866157)

巻号頁・発行日

vol.15, no.1, pp.44-50, 1978-01-01 (Released:2010-04-30)

著者

竹内 洋文 半田 哲郎 川島 嘉明

出版者

一般社団法人 粉体工学会

雑誌

粉体工学会誌 (ISSN:03866157)

巻号頁・発行日

vol.23, no.8, pp.599-606, 1986-08-10 (Released:2010-04-30)

参考文献数

24

被引用文献数

1

著者

松田 芳久 辰見 英津子

出版者

一般社団法人 粉体工学会

雑誌

粉体工学会誌 (ISSN:03866157)

巻号頁・発行日

vol.21, no.11, pp.704-714, 1984-11-10 (Released:2010-04-30)

参考文献数

67

被引用文献数

1 1

著者

山本 大吾 栁谷 拓也 井尾 祐斗 塩井 章久

出版者

一般社団法人 粉体工学会

雑誌

粉体工学会誌 (ISSN:03866157)

巻号頁・発行日

vol.54, no.12, pp.770-775, 2017-12-10 (Released:2018-01-17)

参考文献数

7

被引用文献数

1

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Several research groups including us had reported that catalytic particles with asymmetric composition or morphology exhibit autonomous motions in a homogeneous solution containing reactant. In this study, we provide asymmetric environment where unsteady or quasi-steady gradient of a reactant (ethanol) is formed, although we use spherical catalytic particles made of single metal (Pt). As a result, we found that even spherical particles exhibit specific motility, chemotaxis that objects move along concentration gradient of specific chemical species. In our system, Pt catalytic particles show translation toward the area with higher concentrated reactant (ethanol). Such a new phenomenon is expected to apply to chemical systems such as power source of micromotors and catalytic reaction systems with high reaction efficiency, due to particles’ motility.