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Researchers
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MISUMI Ryuta
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【Published Thesis】 Method for predicting the size of Ni1/3Mn1/3Co1/3(OH)2 particles precipitated in a stirred-tank semi-batch crystallizer using CFD and particle agglomeration models(HELIYON) 2024.04
【Published Thesis】 tert-Butyl-alcohol-induced breakage of the rigid bubble layer that causes overpotential in the oxygen evolution reaction during alkaline water electrolysis(Electrochimica Acta) 2023.03
【Published Thesis】 A dual bubble layer model for reactant transfer resistance in alkaline water electrolysis 2022.10
【Published Thesis】 Microscopic high-speed video observation of oxygen bubble generation behavior and effects of anode electrode shape on OER performance in alkaline water electrolysis 2022.03
【Industrial Property Rights】 水溶液電解方法 2021.12
Kyoto University Doctor Course Completed
Kyushu University Master Course Completed
Kyushu University Graduated
Doctor of Engineering - Kyoto University
Master of Engineering - Kyushu University
Duty Yokohama National UniversityFaculty of Engineering Division of Materials Science and Chemical Engineering Associate Professor
Duty Yokohama National UniversityFaculty of Engineering Division of Materials Science and Chemical Engineering Research Fellow
Duty Yokohama National UniversityFaculty of Engineering Division of Materials Science and Chemical Engineering Research Assistant
Concurrently Yokohama National UniversityInstitute of Advanced Sciences Associate Professor
Concurrently Yokohama National UniversityGraduate school of Engineering Science Department of Chemistry, Chemical Engineering and Life Science Associate Professor
Delft University of Technology Guest Researcher
Japan Society for the Promotion of Science Special researcher of the Japan Society for the Promotion of Science
The Society of Chemical Engineers, Japan
日本海水学会
分離技術会
電解科学技術委員会
The Japan Society of Mechanical Engineers
Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Transport phenomena and unit operations
Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Fluid engineering
Nanotechnology/Materials / Energy chemistry
Study of nucleation and crystal growth based on fluid dynamics in a crystallizer
Grant-in-Aid for Scientific Research
Project Year：
Flow, mixing, chemical reaction and heat transfer of multiphase flow in a stirred vessel
Grant-in-Aid for Scientific Research
Project Year：
Mass transfer across the gas-liquids interface
Grant-in-Aid for Scientific Research
Project Year：
長棟輝行 監修（ Role： Contributor）
佐竹マルチミクス株式会社 （ ISBN:978-4-9913323-0-2 ）
Total pages：618 Responsible for pages：4.5節 Language：Japanese Book type：Scholarly book
多様化するニーズに応えて進化するミキシング (最近の化学工学66)
三角隆太、上ノ山周 化学工学会（編）（ Role： Joint author）
三恵社 （ ISBN:9784864876155 ）
Language：Japanese Book type：Scholarly book
晶析工学は、どこまで進歩したか (最近の化学工学64)
三角隆太ほか化学工学会 (編集) （ Role： Joint author , ７章 撹拌型晶析槽内における撹拌羽根への結晶粒子の衝突現象と微粒子発生）
三恵社 （ ISBN:9784864873253 ）
Total pages：216 Language：Japanese Book type：Scholarly book
粉体・ナノ粒子の創製と製造・処理技術 －基礎物性からプロセス設計の実務・トラブル処理まで－
三角隆太・ほか（ Role： Joint author , 第４章 第８節 攪拌型晶析槽における操作条件と粒子径の制御）
テクノシステム
Language：Japanese Book type：Scholarly book
Jain, M; Shinkai, T; Anzai, K; Misumi, R
CHEMICAL ENGINEERING RESEARCH & DESIGN 216 59 - 72 2025.2 [Reviewed]
Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work
Toyama, K; Kanemoto, R; Misumi, R; Araki, T; Mitsushima, S
ELECTROCHEMISTRY 93 ( 2 ) 027011 - 027011 2025.2 [Reviewed]
DOI Web of Science CiNii Research
Language：English Publishing type：Research paper (scientific journal) Publisher：公益社団法人 電気化学会 Joint Work
<p>In this study, a method for detecting and tracking hydrogen and oxygen bubbles during alkaline water electrolysis was developed using Faster R-CNN and DeepSORT. The images required for CNN training were automatically generated by a pseudo-bubble image generation algorithm specifically developed for the purpose of this study. The method was applied to the results of observations on alkaline water electrolysis obtained under various current densities and wire electrode diameters. Evaluation of detection performance using a confusion matrix showed that for the hydrogen evolution reaction (HER) at a current density of 1.0 A cm<sup>−2</sup> and a wire electrode diameter of 200 µm, the method achieved a precision of 1.00, recall of 0.840, and <i>F</i><sub>1</sub> score of 0.940, indicating very high detection performance. For the oxygen evolution reaction (OER), bubbles were detected almost perfectly under all conditions, with all detection metrics exceeding 1.00. The proposed method was approximately 20000 times faster than humans. Bubble diameter distribution, total volume, total number, and Sauter mean diameter were obtained and quantitatively assessed, and the relationships between current density and electrode diameter for both HER and OER have been discussed. This method enables accurate, rapid, and automatic quantitative evaluation of visualization results from various alkaline water electrolysis observations, which were previously difficult and labor-intensive to perform manually.</p>
Kanemoto, R; Araki, T; Misumi, R; Mitsushima, S
CHEMICAL ENGINEERING SCIENCE 304 2025.2 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
M.Jain, R.Misumi
Journal of Chemical Engineering of Japan 57 ( 1 ) 2387459 2024.8 [Reviewed]
Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Single Work
Daisuke Kitajima, Ryuta Misumi, Yoshiyuki Kuroda, Shigenori Mitsushima
Electrochimica Acta 502 144772 2024.7 [Reviewed]
Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal) Single Work
Measurement Methods on Electrodes and Electrocatalysts for Water Electrolysis
MITSUSHIMA Shigenori, IOROI Tsutomu, KURODA Yoshiyuki, NAGASAWA Kensaku, UCHIYAMA Tomoki, ORIKASA Y … Show more authors
MITSUSHIMA Shigenori, IOROI Tsutomu, KURODA Yoshiyuki, NAGASAWA Kensaku, UCHIYAMA Tomoki, ORIKASA Yuki, INOUE Hiroshi, HIGUCHI Eiji, ANDO Kota, NAKAJIMA Takashi, MISUMI Ryuta, UCHIMOTO Yoshiharu Hide authors
Electrochemistry 93 ( 4 ) 046001 2025.4
Language：English Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Single Work
MISUMI Ryuta, KURODA Yoshiyuki, ARAKI Takuto, MITSUSHIMA
JAPANESE JOURNAL OF MULTIPHASE FLOW 39 ( 1 ) 18 - 25 2025.3
Authorship：Lead author, Corresponding author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Single Work
Other Link： https://www.jstage.jst.go.jp/article/jjmf/39/1/39_2025.T003/_pdf
Electrochemical Methods for Water Electrolysis Electrodes and Electrocatalysts
Denki Kagaku 90 ( 2 ) 136 - 158 2022.6
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Single Work
Other Link： https://www.jstage.jst.go.jp/article/denkikagaku/90/2/90_22-TE0003/_pdf
撹拌槽の中の流動・混合の計測方法
三角隆太，上ノ山周
分離技術 47 ( 1 ) 14 - 18 2017.1
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Joint Work
電気抵抗方式トモグラフィ法を用いた化学装置における混相流の可視化計測
上ノ山周, 一条 憲明, 仁志和彦，三角隆太
化学工学 80 ( 8 ) 460 - 463 2016.8
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Joint Work
水溶液電解方法
三角隆太ほか
Application no：2021-211341 Date applied：2021.12.24
電気抵抗分布画像の画像処理方法
一条 憲明 外６名
Application no：2013-144130 Date applied：2013.7.10
Announcement no：2015-17852 Date announced：2015.1.29
Country of applicant：Domestic
トモグラフィ装置及びトモグラフィ計測方法
一条 憲明 外６名
Application no：2012-65333 Date applied：2012.3.22
Announcement no：2013-195343 Date announced：2013.9.30
Country of applicant：Domestic
トモグラフィ装置及びトモグラフィ計測方法
一条 憲明 外６名
Application no：2012-51622 Date applied：2012.3.8
Announcement no：2012-208113 Date announced：2012.10.25
Country of applicant：Domestic
ポリ塩化ビニルの粉体特性を評価する方法
原田 佳尚 外５名
Application no：2007-210521 Date applied：2007.8.10
Country of applicant：Domestic
Outstanding Paper Award of 2017, Journal of Chemical Engineering of Japan
2018.5 Starting Torque of Vertical Paddle Impellers
日本海水学会賞(奨励賞)
2012.6
日本海水学会 第62年会 学術研究ポスターセッション ポスター大賞
2011.6
Outstanding Paper Award of 2007, Journal of Chemical Engineering of Japan
2008.3
Grant number：25K08364 2025.4 - 2028.3
科研費 Grant-in-Aid for Scientific Research(C)
Investigator(s)：三角隆太
Authorship：Principal investigator Grant type：Competitive
Grant number：22K04799 2022.4 - 2025.3
科研費 Grant-in-Aid for Scientific Research(C)
Investigator(s)：三角隆太
Authorship：Principal investigator Grant type：Competitive
撹拌型晶析装置における二次核生成モデルと結晶凝集モデルの開発
Grant number：17K06886 2017.4 - 2020.3
科学研究費補助金 Grant-in-Aid for Scientific Research(C)
Investigator(s)：三角隆太
Authorship：Principal investigator Grant type：Competitive
懸濁重合場における反応・分散状態のX線トモグラフィー計測による解明(分担)
Grant number：15K14199 2015.4 - 2018.3
Grant-in-Aid for challenging Exploratory Research
Authorship：Collaborating Investigator(s) (not designated on Grant-in-Aid) Grant type：Competitive
トモグラフィー計測による非沈降性スラリー撹拌槽における固気複合分散相状態の解明(分担)
Grant number：26289285 2014.4 - 2018.3
Grant-in-Aid for Scientific Research(B)
Authorship：Collaborating Investigator(s) (not designated on Grant-in-Aid) Grant type：Competitive
水素利用等高度化先端技術開発／常温水電解の実用化基盤研究プラットフォームの構築
Grant number：P20003 2023.6 - 2025.3
Other Ministries NEDO燃料電池等利用の飛躍的拡大に向けた共通課題解決型産学官連携研究開発事業
Investigator(s)：光島重徳
Authorship：Coinvestigator(s)
流体剪断力が食塩蒸発晶析装置での晶析現象に与える影響
Grant number：21A2,22A2,23A2 2021.4 - 2024.3
Private Foundations (公財)ソルト・サイエンス研究財団理工学プロジェクト研究
Investigator(s)：三角隆太
Authorship：Principal investigator
Grant number：P14021 2018.8 - 2023.3
Other Ministries NEDO水素利用等先導研究開発事業
Investigator(s)：光島重徳
Authorship：Coinvestigator(s)
撹拌型晶析槽における結晶粒子の撹拌羽根への衝突による結晶微粒子の発生量の定量化とスケールアップ条件の検討
Grant number：1622 2016.4 - 2017.3
Private Foundations (公財)ソルト・サイエンス研究財団
Investigator(s)：三角隆太
Authorship：Principal investigator
撹拌型晶析槽における結晶粒子の撹拌羽根への衝突による結晶微粒子の発生量の定量化と予測手法の開発
Grant number：1525 2015.4 - 2016.3
Private Foundations (公財)ソルト・サイエンス研究財団
Investigator(s)：三角隆太
Authorship：Principal investigator
アルカリ水電解槽における気泡生成の瞬間の高速度顕微観察と物質移動の等価回路モデル解析
三角 隆太 [Invited]
日本機能水学会第89回ウォーター研究会セミナー 2024.3
Event date： 2024.3
Language：Japanese Presentation type：Oral presentation (invited, special)
[依頼講演] 撹拌型晶析プロセスのポピュレーションバランス解析のモデル開発
三角 隆太 [Invited]
化学工学会第54回秋季大会 2023.9
Event date： 2023.9
Language：Japanese Presentation type：Oral presentation (invited, special)
撹拌槽型晶析装置での結晶粒子分散状態を考慮した成長速度にもとづいたポピュレーションバランス解析
三角 隆太 [Invited]
分離技術会第16回晶析操作の基礎と実践 2023.3
Event date： 2023.3
Language：Japanese Presentation type：Oral presentation (invited, special)
三角 隆太 [Invited]
化学工学会第51回秋季大会 2020.9
Event date： 2020.9
Language：Japanese Presentation type：Oral presentation (invited, special)
撹拌槽のCFD解析に取り組む際に知っておきたい撹拌操作の基礎
三角隆太
サイバネットシステム(株) 撹拌性能向上のためのCFD解析の基礎セミナー サイバネットシステム(株)
Event date： 2018.12
Language：Japanese Presentation type：Oral presentation (general)
化学装置内の撹拌・混合技術全般
液体混合・固液分散に関する研究
溶液晶析における結晶成長・核発生・結晶摩耗に関する研究
撹拌型培養装置
Cooperative Research within Japan
Project Year： 2025.4 - 2026.3
晶析装置の流動に関する研究
Cooperative Research within Japan
Project Year： 2024.4 - 2026.3
撹拌型晶析装置の粒径分布予測手法に関する研究
Cooperative Research within Japan
Project Year： 2023.4 - 2025.3
微生物培養装置
Cooperative Research within Japan
Project Year： 2022.4 - 2024.3
高粘度食品
Others
Project Year： 2021.4 - 2025.3
2025 Exercise 2 in Chemistry Applications Program
College of Engineering Science
2025 Fluid engineering
College of Engineering Science
2025 Chemical Process Engineering
College of Engineering Science
2025 Chemistry, Chemical Engineering and Life Science: Exercise B
College of Engineering Science
2025 Chemical Engineering
College of Engineering Science
化学工学会粒子・流体プロセス部会
2016.4 ミキシング技術分科会 幹事
Committee type：Academic society
化学工学会評議員
2024.4 - 2026.3
Committee type：Academic society
日本海水学会
2023.6 理事(編集)
Committee type：Academic society
化学工学会粒子・流体プロセス部会
2022.4 - 2024.3 熱物質流体工学分科会 代表
Committee type：Academic society
化学工学会
2021.4 - 2024.3 化学工学誌編集委員会委員
Committee type：Academic society
分離技術会 第4回実力養成基礎研修コース
Role(s)： Lecturer, Planner, Logistic support
分離技術会 横浜市 2024.7
