研究業績
論文
Solvent Effects of N, N-dimethylformamide and Methanol on Mass Spectrometry Imaging by Tapping-mode Scanning Probe Electrospray Ionization, Yoichi Otsuka*, Nijiho One, Mengze Sun, Shuichi Shimma, Osamu Urakawa, Tomoya Kudo, Shinichi Yamaguchi and Michisato Toyoda, Analyst, 148, 1275-1284 (2023). https://doi.org/10.1039/d2an01953a
Advances in Mass Spectrometry Imaging for Visualization of Cellular Information in Biological Tissues, Yoichi Otsuka*, Proteome Letters, 7, 53-62 (2022). https://doi.org/10.14889/jpros.7.2_53
Shape-dependent conduction regime in self-doped polyaniline, Jiannan Bao, Yoichi Otsuka*, Hiroshi Ohoyama and Takuya Matsumoto, J. Phys. Chem. C., 126, 8029-8036 (2022). https://doi.org/10.1021/acs.jpcc.1c10929
In-Materio Reservoir Computing in a Sulfonated Polyaniline Network, Yuki Usami, Bram van de Ven, Dilu G. Mathew, Tao Chen, Takumi Kotooka, Yuya Kawashima, Yuichiro Tanaka, Yoichi Otsuka, Hiroshi Ohoyama, Hakaru Tamukoh, Hirofumi Tanaka, Wilfred G. van der Wiel, Takuya Matsumoto, Advanced Materials, 33, 2102688 (2021). https://doi.org/10.1002/adma.202102688
Direct liquid extraction and ionization techniques for understanding multimolecular environments in biological systems, Yoichi Otsuka*, Mass Spectrometry (Tokyo), 10, A0095 (2021). https://doi.org/10.5702/massspectrometry.A0095
Tapping-mode Scanning Probe Electrospray Ionization: Fusion of SPM with Mass Spectrometry, Yoichi Otsuka*, Japanese Journal of Applied Physics, 60 SE0802 (2021). https://doi.org/10.35848/1347-4065/abefac
Sacrificial Gold Coating Enhances Transport of Liquid Metal in Pressurized Fountain Pen Lithography, Gideon I. Livshits*, Jiannan Bao, Leo Sakamoto, Yuki Usami, Yoichi Otsuka, and Takuya Matsumoto, Scientific Reports, 11, 4670 (2021)., https://doi.org/10.1038/s41598-021-84065-4
High spatial resolution multi-modal imaging by tapping-mode scanning probe electrospray ionization with feedback control, Yoichi Otsuka*, Bui Kamihoriuchi, Aya Takeuchi, Futoshi Iwata, Sara Tortorella, Takuya Matsumoto, Analytical Chemistry, 93, 4, 2263–2272 (2021). https://doi.org/10.1021/acs.analchem.0c04144.
Homogeneous chemical state of self-doped polyaniline sub-micrometer thickness lines fabricated by fountain-pen lithography, Jiannan Bao, Yoichi Otsuka*, Takuya Matsumoto*, Japanese Journal of Applied Physics, 60, 015002 (2021). https://doi.org/10.35848/1347-4065/abd04e
Frequency-modulation Kelvin probe force microscopy under tapping mode operation for surfaces with large protrusions, Tomoki Misaka, Kentaro Kajimoto, Kento Araki, Yoichi Otsuka, and Takuya Matsumoto*. Japanese Journal of Applied Physics, 59, 90906 (2020). https://doi.org/10.35848/1347-4065/abac6e
Local-field-induced current noise in shape-limited self-doped polyaniline, Jiannan Bao, Yoichi Otsuka*, Riko Etoh, Yuki Usami and Takuya Matsumoto*. Nanotechnology, 31, 365203 (2020). https://doi.org/10.1088/1361-6528/ab96e4
Statistical procedure for comparison of potential difference between single-component sample surface, Kentaro Kajimoto, Kento Araki, Tomoki Misaka, Leo Sakamoto, Yoichi Otsuka, Hiroshi Ohoyama, Takuya Matsumoto*. Applied Physics Express, 12, 75011 (2019). https://doi.org/10.7567/1882-0786/ab26d2
Chemical Control of Electronic Coupling between a Ruthenium Complex and Gold Electrode for Resonant Tunneling Conduction, Yoichi Otsuka, Satoshi Nishijima, Leo Sakamoto, Kentaro Kajimoto, Kento Araki, Tomoki Misaka, Hiroshi Ohoyama, Takuya Matsumoto*. ACS Applied Materials and Interfaces, 11, 24331-24338 (2019). https://pubs.acs.org/doi/abs/10.1021/acsami.9b05569
Visualization of Sampling and Ionization Processes in Scanning Probe Electrospray Ionization Mass Spectrometry, Bui Kamihoriuchi, Yoichi Otsuka*, Aya Takeuchi, Futoshi Iwata, Takuya Matsumoto. Mass Spectrometry (Tokyo), 7(2), S0078, (2018). https://doi.org/10.5702/massspectrometry.S0078
Resonant tunneling via a Ru–dye complex using a nanoparticle bridge junction, Satoshi Nishijima, Yoichi Otsuka, Hiroshi Ohoyama, Kentaro Kajimoto, Kento Araki, Takuya Matsumoto*. Nanotechnology 29, 245205 (2018). https://doi.org/10.1088/1361-6528/aab7ba
Conjugated Electrical Properties of Au Nanoparticles-Polyaniline Network, Yuki Usami, Yoichi Otsuka, Yasuhisa Naitoh, Takuya Matsumoto*. Japanese Journal of Applied Physics 56, 128001 (2017). https://doi.org/10.7567/JJAP.56.128001
Reduced Sampling Size with Nanopipette for Tapping-Mode Scanning Probe Electrospray Ionization Mass Spectrometry Imaging, Tsuyoshi Kohigashi, Yoichi Otsuka*, Ryo Shimazu, Takuya Matsumoto, Futoshi Iwata, Hideya Kawasaki, Ryuichi Arakawa*. Mass Spectrometry (Tokyo), 5, S0054 (2016). https://doi.org/10.5702/massspectrometry.S0054
Visualization of cancer-related chemical components in mouse pancreas tissue by tapping-mode scanning probe electrospray ionization mass spectrometry, Yoichi Otsuka*, Shuya Satoh, Junpei Naito, Masafumi Kyogaku, Hiroyuki Hashimoto. Journal of Mass Spectrometry, 50, 1157-1162 (2015). https://doi.org/10.1002/jms.3634
On-line visualization of multicolor chemical images with stimulated Raman scattering spectral microscopy, Yoichi Otsuka*, Koji Makara, Shuya Satoh, Hiroyuki Hashimoto, Yasuyuki Ozeki. Analyst, 140, 2984-2987 (2015). https://doi.org/10.1039/C5AN00335K
Label-free visualization of acetaminophen-induced liver injury by high-speed stimulated Raman scattering spectral microscopy and multivariate image analysis, Shuya Satoh†, Yoichi Otsuka†, Yasuyuki Ozeki, Kazuyoshi Itoh, Akinori Hashiguchi, Ken Yamazaki, Hiroyuki Hashimoto, Michiie Sakamoto. Pathology International, 64, 518-26 (2014). (†equally contributed) https://doi.org/10.1111/pin.12206
Imaging mass spectrometry of a mouse brain by tapping-mode scanning probe electrospray ionization, Yoichi Otsuka*, Junpei Naito, Shuya Satoh, Masafumi Kyogaku, Hiroyuki Hashimoto, Ryuichi Arakawa. Analyst, 139, 2336-41 (2014). https://doi.org/10.1039/C3AN02340K
High-speed molecular spectral imaging of tissue with stimulated Raman scattering, Yasuyuki Ozeki, Wataru Umemura, Yoichi Otsuka, Shuya Satoh, Hiroyuki Hashimoto, Kazuhiko Sumimura, Norihiko Nishizawa, Kiichi Fukui, Kazuyoshi Itoh. Nature Photonics, 6, 845-51 (2012). https://doi.org/10.1038/nphoton.2012.263
Method for enhancing peptide signal in time-of-flight secondary ion mass spectrometry, Junpei Naito, Shuya Satoh, Yoichi Otsuka, Hiroyuki Hashimoto. International Journal of Mass Spectrometry, 319, 64-67 (2012). https://doi.org/10.1016/j.ijms.2012.03.003
Scanning probe electrospray ionization for ambient mass spectrometry, Yoichi Otsuka*, Sayuri Shide, Junpei Naito, Masafumi Kyogaku, Hiroyuki Hashimoto, Ryuichi Arakawa. Rapid Communications in Mass Spectrometry, 26, 2725-32 (2012). https://doi.org/10.1002/rcm.6399
Nano-scale resistivity reduction in single-grain of lead phthalocyanine, Satomi Tabuchi, Yoichi Otsuka, Masaki Kanai, Hitoshi Tabata, Takuya Matsumoto, Tomoji Kawai*. Organic Electornics, 11, 916-24 (2010). https://doi.org/10.1016/j.orgel.2010.02.011
Formation of multinuclear metal-terpyridyl complexes covalently bound to carbon substrates, Wataru Kubo, Masashi Nagao, Yoichi Otsuka, Tsutomu Homma, Hirokatsu Miyata*. Langumuir, 25, 13340-3 (2009). https://doi.org/10.1021/la902055h
Synthesis and DNA cleaving activity of water-soluble non-conjugated thienyl tetraynes, Kohei Torikai, Yoichi Otsuka, Makoto Nishimura, Megumi Sumida, Tomoji Kawai, Kiyotoshi Sekiguchi, Ikuo Ueda. Bioorganic & medical chemistry, 16, 5441-51 (2008). https://doi.org/10.1016/j.bmc.2008.04.009
Refinement of Conditions of Point-Contact Current Imaging Atomic Force Microscopy for Molecular-Scale Conduction Measurements, Takashi Tajima, Hirofumi Tanaka, Takuya Matsumoto, Yoichi Otsuka, Yoshitaka Sugawara, Takuji Ogawa*. Nanotechnology, 18, 95501 (2007). https://doi.org/10.1088/0957-4484/18/9/095501
Porphyrin Molecular Nanodevices Wired Using Single‐Walled Carbon Nanotubes, H. Tanaka, T. Yajima, T. Matsumoto, Y. Otsuka, T. Ogawa*. Advanced Materials, 18, 1411-1415 (2006). https://doi.org/10.1002/adma.200501249
Conductance measurement of a DNA network in nanoscale by point contact current imaging atomic force microscopy, Ayumu Terawaki, Yoichi Otsuka, HeaYeon Lee, Takuya Matsumoto, Hidekazu Tanaka, and Tomoji Kawai*. Appl. Phys. Lett., 86, 113901 (2005). https://doi.org/10.1063/1.1886265
Printing electrode for top-contact molecular junction, Kaoru Ojima, Yoichi Otsuka, Takuya Matsumoto, and Tomoji Kawai*. Appl. Phys. Lett. , 87, 234110 (2005). https://doi.org/10.1063/1.2140471
A simple fabrication method of nanogap electrodes for top-contacted geometry: application to porphyrin nanorod and DNA network, Yoichi Otsuka, Yasuhisa Naitoh, Takuya Matsumoto, Wataru Mizutani, Hitoshi Tabata, Tomoji Kawai*. Nanotechnology, 15, 1639 (2004). https://doi.org/10.1088/0957-4484/15/11/046
Toward the DNA electronics, Hitoshi Tabata, Lin Tao Cai, Jianhua Gu, Shin-ichi Tanaka, Yoichi Otsuka, Yutaka Sacho, Masateru Taniguchi, Tomoji Kawai*. Synthetic Metals, 133-134, 469-472 (2003). https://doi.org/10.1016/S0379-6779(02)00386-7
Point-contact current-imaging atomic force microscopy: Measurement of contact resistance between single-walled carbon nanotubes in a bundle, Yoichi Otsuka, Yasuhisa Naitoh, Takuya Matsumoto, Tomoji Kawai*. Appl. Phys. Lett., 92, 1944 (2003). https://doi.org/10.1063/1.1563308
Humidity Dependence of Electrical Resistivity in Poly(dG)Poly(dC) DNA Thin Film, Masateru Taniguchi, Yoichi Otsuka, Hitoshi Tabata, Tomoji Kawai*. Jpn. J. Appl. Phys., 42, 6629 (2003). https://doi.org/10.1143/JJAP.42.6629
Influence of Humidity on the Electrical Conductivity of Synthesized DNA film on Nanogap Electrode, Yoichi Otsuka, Hea-Yeon Lee, Jian-hua Gu, Jeory-O Lee, Kyung-Hwa Yoo, Hidekazu Tanaka, Hitoshi Tabata, Tomoji Kawai*. Jpn. J. Appl. Phys., 41, 891 (2002). https://doi.org/10.1143/JJAP.41.891
Control of electrical conduction in DNA using oxygen hole doping, Hea-Yeon Lee, Hidekazu Tanaka, Yoichi Otsuka, Kyung-Hwa Yoo, Jeong-O Lee, Tomoji Kawai*. Appl. Phys. Lett., 80, 1670 (2002). https://doi.org/10.1063/1.1456972
Self-assembled dye-DNA network and its photoinduced electrical conductivity, Jianhua Gu, Shin-ichi Tanaka, Yoichi Otsuka, Hitoshi Tabata, Tomoji Kawai*. Appl. Phys. Lett., 80, 688 (2002). https://doi.org/10.1063/1.1435805
Electric Conductivity of Dye Modified DNA films with and without Light Irradiation in Various Humidities, Jianhua Gu, Shin-ichi Tanaka, Yoichi Otsuka, Hitoshi Tabata, Tomoji Kawai*. J. Appl. Phys., 92, 2816 (2002). https://doi.org/10.1063/1.1498959
A Nano tester: A new technique for nanoscale electrical characterization by point-contact current- imaging atomic force microscopy, Yoichi Otsuka, Yasuhisa Naitoh, Takuya Matsumoto, Tomoji Kawai*. Jpn. J. Appl. Phys., 41, L742 (2002). https://doi.org/10.1143/JJAP.41.L742
総説・研究紹介
ピコリットルの液体で調べる生体組織の多次元化学分布情報、生産と技術、74、76-80 (2022).
走査プローブ生体分子イメージングにおけるデータ駆動型解析、松本 卓也、村上 怜子、大塚 洋一、表面と真空、65、15-20 (2021). https://doi.org/10.1380/vss.65.15
原子間力顕微鏡と質量分析法を融合する質量分析イメージング法 “t-SPESI”の開発(研究紹介)、大塚洋一*、顕微鏡、56、8 (2021). https://doi.org/10.11410/kenbikyo.56.1_8
生体システムの多彩な分子環境を捉える直接液体抽出イオン化法(総説)、大塚洋一*、日本質量分析学会誌、68、59 (2020). https://doi.org/10.5702/massspec.20-106
タッピングモード走査型プローブエレクトロスプレーイオン化法の開発-生体組織切片の多彩な生体成分を見える化する(研究紹介)、大塚洋一*、日本の科学者、55、34 (2020).
キャピラリプローブとナノ体積液体を活用した走査型プローブエレクトロスプレーイオン化法の開発(研究紹介)、大塚洋一*、日本質量分析学会誌、68、2 (2020). https://doi. org/10.5702/massspec.19-102
大気圧サンプリングイオン化法“SPESI”における帯電ナノ体積液体の動的変化(研究紹介)、上堀内武尉、大塚洋一*、竹内彩、岩田太、松本卓也、真空と表面、62、516-521 (2019). https://doi.org/10.1380/vss.62.516
走査型プローブエレクトロスプレーイオン化質量分析法の開発と生体組織のラベルフリー質量イメージングへの応用(研究紹介)、大塚洋一*、表面科学、37, 315-319 (2016). https://doi.org/10.1380/jsssj.37.315
DNAエレクトロニクス(研究紹介),田畑仁、谷口正輝、田中裕行、大塚洋一、田中慎一、川合知二*, 表面科学, 24, 677 (2003). https://doi.org/10.1380/jsssj.24.677
点接触電流イメージング原子間力顕微鏡の開発(研究紹介), 大塚洋一、内藤泰久、寺脇歩、松本卓也、川合知二*, 表面科学, 24, 573 (2003). https://doi.org/10.1380/jsssj.24.573
特許
LASER SCANNING MICROSCOPE APPARATUS, Koji Makara, Yoichi Otsuka, Masafumi Kyogaku, Hiroyuki Hashimoto, USP 10690897
DATA PROCESSING APPARATUS, DATA DISPLAY SYSTEM, SAMPLE DATA OBTAINING SYSTEM, METHOD FOR PROCESSING DATA, AND COMPUTER-READABLE STORAGE MEDIUM, Yoichi Otsuka, USP 10565474
Ionization method, mass spectrometry method, extraction method, and purification method, Yoichi Otsuka, Ryuichi Arakawa, EP 73317
离子化方法、质谱分析方法、提取方法和提纯方法、大塚洋一、荒川隆一、CN104285275B
イオン化装置、それを有する質量分析装置及び画像作成システム、教學正文、大塚洋一、特許6339883
イオン化方法、質量分析方法、抽出方法及び精製方法、大塚洋一、荒川隆一、特許5955032
イオン化方法、質量分析方法、抽出方法及び精製方法、大塚洋一、荒川隆一、特許5955033
Ionization method, mass spectrometry method, extraction method, and purification method, Yoichi Otsuka, Ryuichi Arakawa, USP 9287099
Ionization device, mass spectrometer including the ionization device, and image generation system including the ionization device, Yoichi Otsuka, USP 9269557
Ionization device, mass spectrometry apparatus, mass spectrometry method, and imaging system, Yoichi Otsuka, Masafumi Kyogaku, USP 9252004
Ionization apparatus, mass spectrometer including ionization apparatus, and image forming system, Masafumi Kyogaku, Yoichi Otsuka, US9230787
画像処理方法、須賀建夫、小松学、大塚洋一、特許5848506
ラマン振動の強度分布情報と質量分布情報とを位置合わせする方法、大塚洋一、橋本浩行、小松学、内藤順平、教學正文、特許5709582
Ionization method, mass spectrometry method, extraction method, and purification method, Yoichi Otsuka, Ryuichi Arakawa, USP 9190257
Light source adjustment unit, optical measurement device, subject information obtaining system, and wavelength adjustment program, Jumpei Naito, Kota Iwasaki, Masafumi Kyogaku, Yoichi Otsuka, USP 9134246
Ionization device, mass spectrometer including ionization device, image display system including mass spectrometer, and analysis method, Yoichi Otsuka, USP 9058966
ブロックポリマーおよびデバイス、曽根岳之、オットーアルブレヒト、池田外充、大塚洋一、矢野亨治、特許5596912
Ionization device, mass spectrometer including the ionization device, and image generation system including the ionization device, Yoichi Otsuka, USP 8710436
自己組織化材料または微粒子を基板上に固定化する方法、および当該方法を用いて作製した基板、川合知二、田畑仁、大塚洋一、山田郁彦、松本卓也、特許5259642
膜電極接合体の製造方法、燃料電池の製造方法、膜電極接合体及び燃料電池、山田和弘、宮崎和也、大塚洋一、特許5430079
Method for immobilizing self-organizing material or fine particle on substrate, and substrate manufactured by using such method, Tomoji Kawai, Hitoshi Tabata, Yoichi Otsuka, Fumihiko Yamada, Takuya Matsumoto, US8372785
Applying an acid solution to the metal oxide substrate; mixing a solution containing the fine particles (Au, Ag, Pt etc.) with a solution containing a self-organizing material (DNA, RNA, protein, Sugar, lipid); applying the mixed solution to the substrate after removing the acid solution, then drying, Tomoji Kawai, Hitoshi Tabata, Yoichi Otsuka, Fumihiko Yamada, Takuya Matsumoto, US7829546
自己組織化材料または微粒子を基板上に固定化する方法、および当該方法を用いて作製した基板、川合知二、田畑仁、大塚洋一、山田郁彦、松本卓也、特許4585523
Block polymer and device, Takeyuki Sone, Otto Albrecht, Koji Yano, Sotomitsu Ikeda, Yoichi Otsuka, US7786235
ナノギャップ電極の製造方法及び該方法により製造されたナノギャップ電極を用いた素子、内藤泰久、水谷亘、川西祐司、大塚洋一、松本卓也、田畑仁、川合知二、特許3864232
招待講演
第61回日本生物物理学会年会, 2023/11/14-16(予定)
日本植物学会第87回大会, 2023/9/7-9(予定)
2023年度SIMS研究会16, 2023/8/31(予定)
AOMSC-KSMS 2023, 2023/8/19-24(予定)
Mass spectrometry imaging of biological tissues with picolitre charged solvents, 14th International Symposium on Atomic Level Characterizations for New Materials and Devices '22, 2022/10/19
ピコ液体を活用する質量分析イメージングの医用応用、第46回日本医用マススペクトル学会年会、2021/9/17
走査型プローブエレクトロスプレーイオン化法による生体組織内多次元化学分布情報計測、第21回日本蛋白質科学会年会、2021/6/16
走査型プローブエレクトロスプレーイオン化法の開発研究、第69回日本質量分析学会総合討論会、2021/5/20
ピコリットル液体を用いる質量分析イメージング技術の研究開発、R026 先端計測技術の将来設計委員会 第4回研究会、2021/4/20
走査型プローブエレクトロスプレーイオン化法の開発と質量分析イメージングへの応用、第45回分析展示講演会、2021/2/25
Scanning Probe Electrospray Ionization: Fusion of SPM with Mass Spectrometry, 28th International Colloquium on Scanning Probe Microscopy (ICSPM28), 2020/12/10
走査型プローブエレクトロスプレーイオン化法の開発研究(日本質量分析学会奨励賞受賞記念講演)、第166回 質量分析関西談話会、2020/7/18
走査型プローブエレクトロスプレーイオン化法の開発と生体組織の多次元化学情報計測、日本顕微鏡学会第76回学術講演会、2020/5/28
細胞や組織の化学状態を捉える大気圧サンプリングイオン化質量分析法の開発、第80回分析化学討論会、2020/5/26
Mass spectrometry imaging of human heart tissue by scanning probe electrospray ionization with feedback control system、サントリー生命科学財団生物有機科学研究所シンポジウム、2020/1/17
Development of scanning probe electrospray ionization for the visualization of chemical components in biological tissue、ASEAN-OU Chemistry Symposium 2020、2020/1/9
走査型プローブエレクトロスプレーイオン化法(SPESI)の開発と生体分子情報計測、池ノ内研究室オープンセミナー、2019/12/13
多彩な生体情報を可視化する走査型プローブエレクトロスプレーイオン化法の開発、NanoLSI公開セミナー、2019/3/18
Ambient Sampling and Ionization with a Single Capillary Probe: Development of scanning probe electrospray ionization (SPESI)、Seminar in Analytical Division、Indiana University、2019/2/5
Development of Scanning Probe Electrospray Ionization for Biomedical Imaging、大阪大学 知の共創プログラム 公開シンポジウム イメージング質量分析の潮流、2019/2/5
大気圧サンプリングイオン化”SPESI”の最近の話、第三回ワイガヤ会、大阪大学、2019/1/10
Ambient Sampling and Ionization with a Single Capillary Probe: Development of Scanning Probe Electrospray Ionization (SPESI)、Bioscience Seminar Series、Uppsala University、2018/11/2
Development of Tapping-mode Scanning Probe Electrospray Ionization (t-SPESI)、M4I Lectures、Maastricht University、2018/10/30
Nonlinear electrical property of Ruthenium complex in nanoscale、BRAINS Open Seminar、Twente University、2018/7/19
医療応用を志向する極致イメージング質量分析法と特徴量抽出法の開発、MEIクラブ、大阪大学、2018/6/12
走査型プローブエレクトロスプレーイオン化法の理解と応用、質量分析オープンイノベーション協働ユニットキックオフシンポジウム・蛋白研セミナー”質量分析の未来”、大阪大学、2018/3/10
走査型プローブエレクトロスプレーイオン化質量分析法の開発とラベルフリー質量イメージング、2017年度精密工学会秋季大会、2017/9/21
大気圧質量イメージング法の研究 〜ナノ液体で化学成分の分布を可視化する!〜、科学から探る“アート”研究最前線 適塾ダヴィンチプロジェクト シンポジウム、2017/7/17
Chemical Imaging under Ambient Condition with Mass Spectrometry、Seminar at Prof. Brunetti Laboratory、Perugia University、2016/12/7
走査型プローブエレクトロスプレーイオン化法の開発とイメージング質量分析への応用、蛋白研セミナー・大阪大学産学連携セミナー、2016/12/2
走査型エレクトロスプレーイオン化法(SPESI)の質量イメージングへの展開、SIMS研究会8、成蹊大学、2016/8/29
新しいイオン化法”SPESI”を用いた生体組織の質量イメージング、第二回真空学会研究会、名古屋大学、2013/12/1
走査型プローブエレクトロスプレーイオン化法(SPESI)による質量イメージング、第14回高分子MS研究会、関西大学、2013/5/1