Wet activated alumina particles were dried in the constant drying rate period in a dispersed bed. The heat transfer coefficients between the particles and gas were measured. The Nusselt number for gas-particle heat transfer in the dispersed bed was affected by the particle Reynolds number and the void fraction. The empirical equation for gas-particle heat transfer in the dispersed bed was obtained.

Particle (ecology)

10.1252/jcej.16.178

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Citations (14)

Photoelectrochemical Studies of MoS₂Electrode by Rotating Ring-disk Electrode Technique

Bulletin of the Chemical Society of Japan (1982)

Akira Fujishima Yoshikazu Noguchi Kenichi Honda B.H. Loo

Abstract Photoelectrochemical processes at both n- and p-type MoS2 electrodes were studied by rotating ring-disk electrode technique. In comparison with other semiconductor photoelectrodes such as CdS, ZnO, and TiO2, the competitive oxidations of various reducing agents at n-MoS2 electrode were not clearly dependent on their redox potentials. The MoS2 photoanode was particularly stabilized in I− solutions, and this was attributed to the specific adsorption of I− ions on the electrode surface. Two step waves were observed in the photocurrent-potential curves of MoS2 photoanode in I− solutions. The first wave was controlled by the diffusion of I− ions from the bulk solution to the electrode surface, and the second wave at more anodic potential was dependent on the formation of the photogenerated holes.

Photoelectrochemistry

Rotating disk electrode

Rotating ring-disk electrode

10.1246/bcsj.55.17

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Citations (13)

Study Underground of Containment and Long-Term Storage of Carbon Dioxide in Unused Aquifers. Characteristics of carbon dioxide solubility in water.

KAGAKU KOGAKU RONBUNSHU (1993)

Masaki Iijima Kazuitsu Ito Hirotoshi Horizoe Yoshikazu Noguchi Yoshiyuki Tazaki

CO2を帯水層へ固定化する場合の基礎データを得る目的で, 各種パラメータ変化に伴うCO2の水への溶解度を測定し, 以下の結果を得た.(1) CO2-H2O系での測定を行い, 文献値とよく一致し, 測定値の信頼性を確認した.(2) 温度 : 30～70℃, 圧力 : 25～200ata.におけるCO2の水への溶解度について, 塩分 (0～2.7wt.%) および気相のメタン濃度 (0～75mol%) の影響を測定し, 塩分によりCO2の水への溶解度は減少し, 気相CO2分圧にほぼ比例して, CO2の水への溶解度は変化することを定量的に把握した.引き続き広範囲の試験を継続する予定.

Containment (computer programming)

10.1252/kakoronbunshu.19.914

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Citations (7)

Electrochemical reduction of carbon dioxide on hydrogenstoring materials

Journal of Electroanalytical Chemistry (1993)

Kiyomi Ohkawa Kazuhito Hashimoto Akira Fujishima Yoshikazu Noguchi Sumie Nakayama

Reversible hydrogen electrode

10.1016/0022-0728(93)80495-4

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Citations (78)

Underground storage of carbon dioxide in depleted natural gas reservoirs and in useless aquifers

Engineering Geology (1993)

Hitoshi KOIDE Yoshiyuki Tazaki Yoshikazu Noguchi Masaki Iijima Kazuitsu Ito

10.1016/0013-7952(93)90086-r

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Citations (49)

Inhibition of IRS-1 Phosphorylation and the Alterations of GLUT4 in Isolated Adipocytes from Cachectic Tumor-Bearing Rats

Biochemical and Biophysical Research Communications (1999)

Takaki Yoshikawa Yoshikazu Noguchi Shinobu Satoh

GLUT4

Insulin receptor substrate

IRS1

Basal (medicine)

10.1006/bbrc.1999.0394

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Citations (9)

Underground Storage of Carbon Dioxide in Unused Aquifers.

KAGAKU KOGAKU RONBUNSHU (1993)

Yoshikazu Noguchi Yoshiyuki Tazaki Masaki Iijima Kazuitsu Ito Yuji Shindo

地中には種々の形でCO2が存在しており, CO2を地中に処理することは海中処理に比べ周辺への環境影響はより少ない方法であると考えられる.本論では, 処理容量を大きくするため水相へCO2を溶解させる形で地中に貯留する技術について, 現在利用されていない帯水層を対象に, 貯留可能性量, コスト等のフィージビリティ・スタディを行い, 世界全体での貯留量3,200億トン, コスト3,000円/トン-CO2, 所要動力73kWb/トン-CO2と技術的, 経済的に十分に実現可能な技術であることを明らかにした.今後, 環境への影響評価を重点に, さらに検討する必要がある.

10.1252/kakoronbunshu.19.705

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Citations (2)

Studies on equi-adsorption points of hydrogen and hydroxyl ions and zeta potentials for various minerals in beach sand.

Shigen shori gijutsu (1987)

Yoshitaka NAKAHIRO Yoshikazu Noguchi Takahide WAKAMATSU

As a part of the fundamental studies on the reaction between mineral surface and collector ions, the relationship between the equi-adsorption points and the isoelectric points was discussed for cassiterite, monazite, ilmenite and zircon in beach sand, which were the most important mineral resources in South East Asia.The adsorption amounts of hydrogen and hydroxyl ions for the above various minerals were determind by the acid titration method which was theoretically considered by one of the authors. The zeta potentials were measured by the electrophoresis method. It was found that the equi-adsorption points of monaziteand ilmenite were in agreement with the isoelectric points. Howevere, the above phenomenon was not recognized in the case of zircon and cassiterite. Thus, it was confirmed that the equi-adsorption point did not always be in agreement with the isoelectric point.

Cassiterite

Ilmenite

Zeta potential

10.4144/rpsj1986.34.3

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Citations (0)