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3. Analyzing gait data measured by wearable cyborg hybrid assistive limb during assisted walking: gait pattern clustering.

Author

Namikawa, Yasuko, Kawamoto, Hiroaki, Uehara, Akira, and Sankai, Yoshiyuki

Abstract

Introduction: The wearable cyborg Hybrid Assistive Limb (HAL) is a therapeutic exoskeletal device that provides voluntary gait assistance using kinematic/kinetic gait data and bioelectrical signals. By utilizing the gait data automatically measured by HAL, we are developing a system to analyze the wearer's gait during the intervention, unlike conventional evaluations that compare pre- and post-treatment gait test results. Despite the potential use of the gait data from the HAL's sensor information, there is still a lack of analysis using such gait data and knowledge of gait patterns during HAL use. This study aimed to cluster gait patterns into subgroups based on the gait data that the HAL automatically collected during treatment and to investigate their characteristics. Methods: Gait data acquired by HAL, including ground reaction forces, joint angles, trunk angles, and HAL joint torques, were analyzed in individuals with progressive neuromuscular diseases. For each measured item, principal component analysis was applied to the gait time-series data to extract the features of the gait patterns, followed by hierarchical cluster analysis to generate subgroups based on the principal component scores. Bayesian regression analysis was conducted to identify the influence of the wearer's attributes on the clustered gait patterns. Results: The gait patterns of 13,710 gait cycles from 457 treatments among 48 individuals were divided into 5–10 clusters for each measured item. The clusters revealed a variety of gait patterns when wearing the HAL and identified the characteristics of multiple sub-group types. Bayesian regression models explained the influence of the wearer's disease type and gait ability on the distribution of gait patterns to subgroups. Discussion: These results revealed key differences in gait patterns related to the wearer's condition, demonstrating the importance of monitoring HAL-assisted walking to provide appropriate interventions. Furthermore, our approach highlights the usefulness of the gait data that HAL automatically measures during the intervention. We anticipate that the HAL, designed as a therapeutic device, will expand its role as a data measurement device for analysis and evaluation that provides gait data simultaneously with interventions, creating a novel cybernics treatment system that facilitates a multi-faceted understanding of the wearer's gait. [ABSTRACT FROM AUTHOR]

Published
2024
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6. New anti-perovskite-type Superconductor ZnNyNi3

Author

Uehara, Masatomo, Uehara, Akira, Kozawa, Katsuya, and Kimishima, Yoshihide

Subjects
Condensed Matter - Superconductivity
Abstract

We have synthesized a new superconductor ZnNyNi3 with Tc ~3 K. The crystal structure has the same anti-perovskite-type such as MgCNi3 and CdCNi3. As far as we know, this is the third superconducting material in Ni-based anti-perovskite series. For this material, superconducting parameters, lower-critical field Hc1(0), upper-critical field Hc2(0), coherence length x(0), penetration depth l(0), and Gintzburg -Landau parameter k(0) have been experimentally determined., Comment: 13 pages, 3 figures, 1 table

Published
2008
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8. HANASUI: Multi-view Observable and Movable Fogscreen

Author

Ishikawa, Yu, Muta, Masafumi, Tamaru, Junki, Nakata, Eisuke, Uehara, Akira, Hoshino, Junichi, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Kobsa, Alfred, Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Pisan, Yusuf, editor, Sgouros, Nikitas M., editor, and Marsh, Tim, editor

Published
2014
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23. Abstracts of selected papers presented at the 78th general meeting of the Japanese Society of Gastroenterology

Author

Kusano, Motoyasu, Sekiguchi, Toshikazu, Hanyu, Nobuyoshi, Aoki, Teruaki, Matsushima, Yasuhiro, Okamoto, Eizo, Takeda, Yasuo, Takeda, Ryoyu, Miyachi, Masahiko, Nimura, Yuji, Arai, Taidoh, Masuda, Jun, Tanaka, Masao, Ogawa, Yoshiaki, Ura, Kazuhide, Matsumoto, Teiji, Taniyama, K., Kurosawa, Susumu, Owyang, Chung, Baba, Hiroshi, Fujimura, Masaki, Hamada, Eiji, Shimada, Tadahito, Kabemura, Teppei, Chijiiwa, Yoshiharu, Sato, T., Koito, K., Matsuda, Hiroko, Kawasaki, Tsunehisa, Obara, Katsutoshi, Kasukawa, Reiji, Miyoshi, Hirofumi, Matsumoto, Akio, Yamamoto, Manabu, Ohmasa, Ryouji, Kokubu, Shigehiro, Shibata, Hisao, Tajiri, Takashi, Onda, Masahiko, Hashizume, Makoto, Sugimachi, Keizo, Kobayashi, Kenji, Shiozaki, Hitoshi, Fujisaki, Junko, Shimoda, Tadakazu, Hase, Satoshi, Tsukamoto, Yoshihisa, Atsumi, M., Konishi, H., Nakajo, Shinobu, Fujiyama, Yoshihide, Taruishi, Masaki, Ayabe, Tokiyoshi, Morise, Kimitomo, Yamaguchi, Takeo, Makiyama, Kazuya, Itsuno, Minoru, Matsui, T., Okabe, N., Okabe, Nobuo, Matsui, Toshiyuki, Sakatani, Arata, Koizumi, Koichi, Imai, Yutaka, Sugino, Yoshinori, Masaki, Tadahiko, Sawada, Toshio, Nishigami, Takashi, Satomi, Masamichi, Hatada, Yasumasa, Saito, Hiroshi, Kobayshi, Kiyonori, Katsumata, Tomoe, Sugimoto, Kenji, Itabashi, Tsukasa, Kitagawa, Motoji, Hayakawa, Tetsuo, Okazaki, Kazuichi, Yamamoto, Yasuro, Funakoshi, Akihiro, Miyasaka, Kyoko, Soejima, Kazuhiko, Kanda, Mikio, Sugiyama, Masanori, Kuroda, Akira, Inoue, Hisayuki, Bamba, Tadao, Hamanaka, Y., Suzuki, T., Suzuki, Mamoru, Hanyu, Fujio, Tamura, Katsuhiro, Nakase, Akira, Noguchi, M., Hiwatashi, N., Murata, Yuhji, Suzuki, Kazuo, Ohtani, Haruo, Watanabe, Yoshihisa, Zeniya, Mikio, Aizawa, Yoshio, Masumoto, T., Onji, M., Hamasaki, Keisuke, Nakata, Keisuke, Fukui, Hiroshi, Tsujii, Tadasu, Yamashiki, Masayoshi, Nishimura, Akira, Tsutsui, Hiroko, Mizoguchi, Yasuhiro, Kimura, Fumio, Miyazaki, Masaru, Kiyota, Keisuke, Inokuchi, Hideto, Yamamoto, Yoshihiro, Oka, Hiroshi, Horikoshi, Tsutomu, Sekiguchi, Toshikazu, Takayasu, H., Shirai, T., Hongo, Michio, Okuno, Yo, Okano, H., Aoyama, N., Ohsuki, Masao, Maeda, Kenji, Haruma, Ken, Sumii, Koji, Nakai, Yoshihide, Fukunaga, Mikihiko, Kaneko, Hiroshi, Morise, Kimitomo, Okumura, Toshikatsu, Uehara, Akira, Fukuda, Yoshihiro, Satomi, Masamichi, Joh, Takashi, Itoh, Makoto, Kitagawa, Yuko, Kitajima, Masaki, Iwao, Tadashi, Toyonaga, Atsushi, Nakamura, Masahiko, Oda, Masaya, Kawamura, Yukimitsu, Dohden, Kenji, Kamiyama, Yasuhiko, Matsuno, Seiki, Hirano, Morihisa, Otsuka, Sachio, Ito, Masahiro, Sekine, Ichiro, Ogihara, Tatsuo, Sato, Nobuhiro, Uehara, Akira, Namiki, Masayoshi, Sugiura, Nobuyuki, Ebara, Masaaki, Matsuo, Naoki, Uchida, Hideo, Okada, Shuichi, Okazaki, Nobuo, Tsujii, Hirohiko, Ohsuga, Toshiaki, Abe, M., Nagata, Y., Yamasaki, Susumu, Kosuge, Tomoo, Kitamoto, Mikiya, Nakanishi, Toshio, Ichikawa, Yuzo, Mizoguchi, Yasuhiro, Ohtake, Yoshio, Hirasawa, Hiroyuki, Sugihara, Junichi, Muto, Yasutoshi, Yasunaga, Mitsuru, Okita, Kiwamu, Ukida, Minoru, Tsuji, Takao, Isai, Hideya, Uchino, Junichi, Suzuki, Katsuhiko, Komatsu, Kanji, Ohtomo, Yumiko, Idezuki, Yasuo, Sakuramachi, Shunji, Kimura, Taizo, Kitano, Seigo, Sugimachi, Keizo, Moriyama, Masaaki, Yazaki, Yasuyuki, and Saito, Takashige

Published
1993
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28. Synthesis, structures, and magnetic properties of heterodimetal bis(mu-hydroxo)chromium(III)nickel(II) complexes with tpa derivatives having sterically bulky substituents

Author

Shiren, Kazushi, Fujinami, Shuhei, Suzuki, Masatatsu, and Uehara, Akira

Subjects
Chemistry, Inorganic -- Research, Coordination compounds, Ligands, Solution (Chemistry), Reactivity (Chemistry) -- Research, Nickel compounds, Chromium compounds, Chemistry
Abstract

Research has been conducted on the heterodinuclear bis(mu-hydroxo)chromium(III)nickel(II) complexes. The preparation and synthesis of these complexes have been carried out and the structures and magneto-structural relationship of the complexes with the modulated magnetic interactions between chromium(III) and nickel(II) ions are discussed.

Published
2002

29. Colorable Band: A Wearable Device to Encourage Daily Decision Making Based on Behavior of Users with Color Vision Deficiency.

Author

Uehara, Akira

Subjects
COLOR blindness, WRIST, DECISION making, COVID-19 pandemic, AUTUMN, SHOW windows
Abstract

People with color vision deficiency (CVD) face several difficulties in performing daily tasks because they often fall outside of the culturally, linguistically, and educationally modulated majority opinion. This study aims to develop a device that can seamlessly input/output information based on the user's handling actions and to verify the validity of the support for daily decision-making of people with CVD. In this study, the use case is set as selecting clothes in a shop; online behavior observation is then conducted to design an assistive method and a watch-type device that shows useful information, such as the adjusted color and/or text for people with CVD on a display at the wrist is developed. An online user interview is conducted using a first-person perspective and bird's-eye perspective video with three CVD participants to verify the validity of the developed device for daily support. Consequently, the accuracy and effectiveness of the watch-type devices were determined. This study presents a prototyped proof-of-concept device in a remote environment, considering the coronavirus pandemic, and discusses the daily support for people with CVD. [ABSTRACT FROM AUTHOR]

Published
2021
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32. Abstracts of selected papers presented at the 34th annual meeting of the Japanese Society of Gastroenterology October 12–14, 1992, Utsunomiya, Japan

Author

Wisse, Eddie, Geerts, Bert, Hirose, Miyoko, Sato, Nobuhiro, Fukumura, Dai, Kurose, Iwao, Tanaka, Minoru, Ishibashi, Hiromi, Itoh, Yoshito, Okanoue, Takeshi, Naito, Makoto, Komatsu, Y., Shiratori, Y., Han, K. K., Hashimoto, N., Ikeda, Hitoshi, Wu, Catherine H., Matsuura, Tomokazu, Nagamori, Seishi, Tanaka, M., Tanikawa, K., Saibara, Toshiji, Onishi, Saburo, Balabaud, C., Nakano, Osamu, Sakamoto, Choitsu, Shimamoto, Chikao, Takao, Yujiro, Ota, Hiroshi, Katsuyama, Tsutomu, Hiraishi, Hideyuki, Terano, Akira, Naito, Yuji, Yoshikawa, Toshikazu, Kajita, Hidetoshi, Tatsuta, Hiroshi, Rokutan, Kazuhito, Aoike, Akira, Watanabe, Sumio, Kinoshita, Yoshikazu, Chiba, Tsutomu, Uehara, Akira, Kitamori, Shigeru, Maekawa, Soichiro, Shimoyama, Takashi, Otaka, Michiro, Masamune, Osamu, Mitsuyama, Keiichi, Tanikawa, Kyuichi, Kubota, Yoshiro, Watanabe, Toshiaki, Baba, Masaru, Hasegawa, Hiroshi, Aizawa, Yoshio, Zeniya, Mikio, Onji, Morikazu, Kumon, Izumi, Hasegawa, Itaru, Tsutsui, Hiroko, Miyakawa, Hiroshi, Kako, Makoto, Yamazaki, Masayo, Sugiyama, Yuichi, Ishii, Koji, Wolkoff, Allan, Narita, Tohru, Takikawa, Hajime, Kitamura, Tsuneo, Hayakawa, Tomihiro, Hoshino, Makoto, Harada, Masaru, Suzuki, Hiroshi, Adachi, Yukihiko, Kobayashi, Hiroaki, Yoshida, H., Harada, T., Sai, Jinkan, Ariyama, Jo, Yamaguchi, Taketo, Saisho, Hiromitsu, Hirooka, Yoshiki, Naitoh, Yasuo, Kamei, Akira, Ohashi, Kazuhiko, Obara, Takeshi, Maguchi, Hiroyuki, Yonezawa, Suguru, Osak, Masahiko, Kamei, Katsuhiko, Funabiki, Takahiko, Nagai, Hideo, Kasahara, Kogoro, Miyakawa, Shuichi, Horiguchi, Yuji, Sugiyama, Masanori, Atomi, Yutaka, Ehata, T., Omata, M., Nakamura, Tetsuo, Yamauchi, Katsumi, Katayama, Kazuhiro, Fusamoto, Hideyuki, Shiomi, Susumu, Kuroki, Tetsuo, Arase, Yasuji, Kumada, Hiromitsu, Murazumi, Yukari, Sekiya, Chihiro, Hige, Shuhei, Saga, Akiyoshi, Adachi, Hiroshi, Kaneko, Shuichi, Nakajima, Hisato, Toda, Gotaro, Takahashi, Shin’ichi, Itoh, Takeshi, Moriyama, Takashi, Imawari, Michio, Takeyama, Yoshifumi, Saitoh, Yoichi, Inui, Akio, Kasuga, Masato, Tokita, Kazuhiko, Tsuchihashi, Yasunari, Hasumura, Satoshi, Tarao, Kazuo, Shimizu, Akio, Kohda, Hironobu, Inoue, Kazuhiko, Haruma, Ken, Chonan, Akimichi, Mochizuki, Fukuji, Takemoto, Norishige, Baba, Yasumasa, Mizushima, Takaaki, Kimura, Ikuro, Azuma, Munenori, Shida, Shigemitu, Shimodaira, Masaya, Tsukamoto, Yoshihisa, Nagawa, Hirokazu, Sawada, Toshio, Katsumata, Tomoe, Mieno, Hiroyoshi, Hideshima, Amane, Suda, Yasuo, Nakamura, Tsuneya, Hayashi, Kayoko, Sekiyama, Tatsuya, Aramaki, Takumi, Kanazawa, Hidenori, Watari, Atsushi, Iwao, Tadashi, Toyonaga, Atsushi, Mizumoto, Hideaki, Matsutani, Shoichi, Kanagawa, Hiroshi, Mima, Satoaki, Moriishi, Shingo, Sumida, Nobuyuki, Kitano, S., Sugimachi, K., Obara, Katsutoshi, Kasukawa, Reiji, Ohashi, Kaoru, Beppu, Tomoe, Harada, Akio, Takagi, Hiroshi, Nishioka, Akihiko, Ashida, Hiroshi, Okushiba, Shunichi, Katoh, Hiroyuki, Ohkubo, Hitoshi, Arakawa, Yasuyuki, Kobayashi, Hideo, Seki, Masatake, Ohsuki, Masao, Maeda, Kenji, Hasebe, Tetsunori, Harasawa, Shigeru, Tamura, Koichiro, Ohshita, Masaru, Matsuike, Tsuneo, Suzuki, Yasumoto, Obata, Shinichiro, Kimura, Keishi, Harada, H., and Fukushima, T.

Published
1993
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33. Abstracts of selected papers presented at the 79th general meeting of the Japanese Society of Gastroenterology March 29–31, 1993, Kyoto, Japan

Author

Uehara, Akira, Namiki, Masayoshi, Yoneda, Masashi, Taché, Yvette, Suzuki, Hidekazu, Miura, Soichiro, Otaka, Michiro, Masamune, Osamu, Fukudo, Shin, Nomura, Taisuke, Abe, R., Shimosegawa, T., Nakamura, Keiya, Aoike, Akira, Yamaguchi, Hiroya, Kimura, Toshinari, Nakamura, Toshikazu, Matsumoto, Kunio, Tomiya, Tomoaki, Fujiwara, Kenji, Mori, Kenji, Yasunaga, Mitsuru, Yasuda, Hiroshi, Kojima, Itaru, Ohnishi, Hiroo, Nagaki, Masahito, Koide, Norio, Tsuji, Takao, Nagano, Kouichi, Kawano, Sunao, Kihira, Ken, Satoh, Kiichi, Sakaki, Nobuhiro, Yamada, Yoshiya, Karita, Mikio, Yoshimatsu, Tateo, Nakashima, Takatoshi, Aoyama, Nobuo, Fukuda, Yoshihiro, Tamura, Kazutami, Sugiyama, T., Yabana, T., Lin, Jaw-Town, Sueoka, Nobuo, Iwakiri, Katsuhiko, Watanabe, Sumio, Sato, Nobuhiro, Yamasaki, Kazuaki, Okazaki, Kazuichi, Nishino, Hirokazu, Muroi, Tadaki, Matsuda, Yoshiro, Tsutsumi, Mikihiro, Oshita, Masahide, Takei, Yoshiyuki, Kumashiro, Ryukichi, Tanikawa, Kyuichi, Nagao, Yasuyuki, Okanoue, Takeshi, Tsukada, Nobuhiro, Oda, Masaya, Ishii, Motoyasu, Yamamoto, Takeshi, Komatsu, Masafumi, Nakajima, Ko, Sakisaka, Shotaro, Tanikawa, Kyuichi, Itoh, Fumio, Imai, Kohzoh, Shintani, Yutaka, Bamba, Tadao, Saito, Eiichi, Ogihara, Akifumi, Bamba, Tadao, Sasaki, Masaya, Fujimoto, Kazuma, Iwakiri, Ryuichi, Hosomi, Motonobu, Takada, Fumio, Obayashi, Makoto, Kitano, Atushi, Nagoshi, Sumiko, Fujiwara, Kenji, Tanaka, T., Monna, T., Matsuzaki, Yutaka, Sugimoto, Hiroyuki, Machishi, Hideki, Mizumoto, Ryuji, Matsuda, Kazuya, Uchida, Yoshihito, Okano, H., Aoyama, N., Yamada, Masahiko, Hongo, Michio, Shibata, Yoshihisa, Miyachi, Masahiko, Nimura, Yuji, Neya, Toshiaki, Mizutani, Masatoshi, Inoue, Jun, Nakamura, Masahiko, Aoyama, Nobuo, Futami, Sachiko, Funakoshi, K., Sugimura, K., Iwao, Yasushi, Hibi, Toshifumi, Kusugami, Kazuo, Morise, Kimitomo, Kimura, Mitsuo, Hiwatashi, Nobuo, Kanzaki, Shinichiro, Makiyama, Kazuya, Yamamura, Makoto, Satomi, Masamichi, Harada, Hirofumi, Shimada, Hiroshi, Yoshida, Norimasa, Yoshikawa, Toshikazu, Hiraishi, Hideyuki, Harada, Takashi, Suzuki, Masayuki, Miura, Soichiro, Masuda, E., Kawano, S., Matsui, H., Fukutomi, H., Oshitani, Nobuhide, Kitano, Atsuo, Suematsu, Makoto, Suzuki, Hidekazu, Togashi, Hitoshi, Shinzawa, Haruhide, Murakami, Hiroya, Takagi, Hiroshi, Kasugai, Hiroshi, Tatsuta, Masaharu, Urabe, Takeshi, Unoura, Masashi, Yamanaka, Naoki, Okamoto, Eizo, Takayama, Tadatoshi, Yamasaki, Susumu, Kita, Kazuhiko, Ebara, Masaaki, Majima, Yasuo, Tanikawa, Kyuichi, Matsui, Osamu, Demachi, Hiroshi, Seki, Toshihito, Inoue, Kyoichi, Ohnishi, Kunihiko, Ito, Susumu, Kaneko, Akira, Hayashi, Norio, Yoneyama, Keiichiro, Mitamura, Keiji, Higashi, Katsuyoshi, Hoshino, Makoto, Ogasawara, Hisataka, Sirahama, Keigo, Hashimoto, Naoki, Yamada, Haruki, Shiratori, Yasushi, Okano, Ken’ichi, Minemura, Masami, Watanabe, Akiharu, Masaki, Tsutomu, Tokuda, Masaaki, Kawano, Tatsuyuki, Endo, Mitsuo, Kouzu, Teruo, Sakaguchi, Humiaki, Hanyu, Nobuyoshi, Aoki, Teruaki, Shimamoto, Chikao, Hirata, Ichiro, Sasajima, Koji, Takubo, Kaiyo, Kawaura, Yukimitsu, Kawakami, Kazuyuki, Hayashi, Hiroto, Suzuki, Takashi, Watanabe, Kazuo, Watanabe, Hidenobu, Hino, Naoki, Higashi, Toshihiro, Shiro, Tomohiro, Inoue, Kyoichi, Hongo, Yasushi, Tada, Hideki, Saitoh, K., Akiyama, Y., Mitsufuji, Shoji, Tsuchihashi, Yasunari, Nishimura, K., Hosokawa, Y., Wada, Ryo, Suda, Kouichi, Mafune, Ken-ichi, Idezuki, Yasuo, Mizuno, Motowo, Tsuji, Takao, Watanabe, Mamoru, Hibi, Toshifumi, Matsumoto, Takayuki, Kobayashi, Kenzo, Morise, Kimitomo, Yamaguchi, Takeo, Watanabe, T., Kubota, Y., Andoh, Akira, Fujiyama, Yoshihide, Tanaka, Kanji, Hioki, Koshirou, Hinoda, Yuji, Imai, Kohzoh, and Ohtani, Haruo

Published
1993
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37. Synthesis, characterization, and reversible oxygenation of mu-alkoxo diiron(II) complexes with the dinucleating ligand N,N,N'N'-tetrakis((6-methyl-2-pyridyl)methyl)-1,3-diamino-propan-2-olate

Author

Hayashi, Yoshihito, Kayatani, Takayuki, Sugimoto, Hideki, Suzuki, Masatatsu, Inomata, Katsuhiko, Uehara, Akira, Mizutani, Yasuhisa, Kitagawa, Teizo, and Maeda, Yonezo

Subjects
Iron compounds -- Research, Complex compounds -- Spectra, Chemistry
Abstract

X-ray crystallography of the synthesis of mu-alkoxo diiron(II) complex (Fe2(Me4-tpdp)(C6H5COO)(H2O))(BF4)(sub 2) dinuclear iron complex indicates that the complex crystallizes in the monoclinic space group P2(sub l)/n. The complex contains two different iron centers, one five-coordinated iron center with N3O2 donor set, and another six-coordinated iron center. The thermal stability of the complex depends upon electron donor ability and the steric bulkiness. Raman resonance spectra reveal two oxygen isotope susceptible bands in v(O-O) region.

Published
1995

39. Abstracts of selected papers presented at the 31st annual meeting of the Japanese Society of Gastroenterology October 5–7, 1989, Asahikawa, Japan

Author

Yagi, Kinji, Sugaya, Eiichi, Fusamoto, Hidcyuki, Kamada, Takenobu, Nakamura, Masahiko, Oda, Masaya, Uehara, Akira, Namiki, Masayoshi, Itoh, Kazuro, Matsuo, Yutaka, Yoshikawa, Toshikazu, Suematsu, Makoto, Kurose, Iwao, Sekiya, Chihiro, Kohda, Hironobu, Narumi, Shunji, Takahashi, Ken-ichi, Sasaki, Mutsuo, Ono, Keiichi, Manabe, Tadao, Ohshio, Gakuji, Iishi, Hiroyasu, Tatsuta, Masaharu, Fuchigami, Tadahiko, Iwashita, Akinori, Sekoguchi, Tsutomu, Inamori, Shigeharu, Ajioka, Yoichi, Watanabe, Hidenobu, Masaki, Tadahiko, Suzuki, Kimitaka, Shimamoto, Chikao, Hirata, Ichiro, Hinoda, Yuji, Yachi, Akira, Kijima, Hiroshi, Watanabe, Hidenobu, Yamao, Kenji, Nakazawa, Saburo, Wada, Yoshiyuki, Semba, Daisuke, Saito, Akiko, Obata, Hiroshi, Tarao, Kazuo, Shimizu, Akio, Hirohashi, Setsuo, Fujiyama, Shigetoshi, Izuno, Kiyonori, Matsui, Osamu, Kadoya, Masumi, Fukuda, Morimichi, Mima, Satoaki, Oi, Hiromichi, Nakamura, Hironobu, Itani, Kenji, Yoshikawa, Toshikazu, Ebara, Masaaki, Ohto, Masao, Takasaki, Ken, Aruga, Atsushi, Okuda, Koji, Nakayama, Toshimichi, Arii, Shigcki, Tobe, Takayoshi, Nonami, Toshiaki, Takagi, Hiroshi, Mayumi, Toshihiko, Hachisuka, Kitao, Aoike, Akira, Nakamura, Keiya, Nagahata, Yoshi, Saitoh, Yoichi, Iwasaki, Ariyoshi, Aizawa, Toshiharu, Sato, Nobuhiro, Kawano, Sunao, Shibata, Yoshimi, Okamura, Kiyoshi, Hori, Shinji, Yamamura, Makoto, Akimoto, Shin, Igarashi, Tatsuki, Takase, Kojiro, Tameda, Yukihiko, Nakajima, Yasuaki, Uchino, Junichi, Noro, Toshio, Yamashiro, Moriya, Miyake, Hirofumi, Matsumoto, Shuji, Higashiguchi, Takashi, Ogura, Yoshifumi, Hayashi, Hiroto, Suzuki, Takashi, Higashiguchi, Takashi, Ogura, Yoshifumi, Hayashi, Hiroto, Suzuki, Takashi, Kumashiro, Ryukichi, Tanikawa, Kyuichi, Adachi, Yukihiko, Yamamoto, Toshio, Izawa, Kunihide, Tsuchiya, Ryoichi, Inui, Kazuo, Nakazawa, Saburo, Suyama, Masafumi, Ariyama, Jo, Nakasako, Toshiaki, Hanyu, Fujio, Imaizumi, Toshihide, Matsuda, Yoshiaki, Hasebe, Osamu, Noguchi, Takashi, Mizumoto, Ryuji, Matsueda, Kei, Umeda, Noritsugu, Hongo, Michio, Harasawa, Shigeru, Takayasu, Hiroyuki, Kusano, Motoyasu, Sekiguchi, Toshikazu, Okano, Hiroyuki, Saeki, Susumu, Shimada, Akira, Nakagawa, Tetsuya, Ozaki, Shoichi, Kobayashi, Kenzo, Fukudo, Shin, Suzuki, Jinichi, Sasaki, Daisuke, Kawasaki, Masatoshi, Kasai, Fukio, Takebe, Kazuo, Kobayashi, Masayoshi, Kawarada, Hiroaki, Ochiai, Takumi, Nagahama, Akira, Tsuji, Kagetoshi, Himeno, Seiichi, Toyosaka, Akihiro, and Okamoto, Eizo

Published
1991
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40. Kainic acid injection into medullary raphe produces gastric lesions through the vagal system

Author

Okomura, Toshikatsu, Uehara, Akira, Taniguchi, Yoshiaki, Watanabe, Yasuo, Tsuji, Kazuyuki, Kitamori, Shigeru, and Masayoshi, Namiki

Subjects
Peptic ulcer -- Physiological aspects, Kainic acid -- Physiological aspects, Biological sciences
Abstract

The role of the nucleus raphe obscurus (NRO) in the formation of gastric ulcers was studied by injecting kainic acid to stimulate neurons in the NRO. Kainic acid stimulation of the neurons within the NRO resulted in gastric erosions within 24 hours. Stimulation of neurons outside the NRO boundaries did nor produce gastric erosions. Bilateral gastric branch vagotomies prevented the formation of gastric ulcers during kainic acid stimulation of the NRO confirming assumptions that vagal stimulation play a centrral role in the maintenance of gastric mucosal integrity.

Published
1993

41. A cis-folded macrocyclic nickel(II) complex: molecular structure and thermal reaction of cis-diaqua(1,4,7,11-tetraazacyclotetradecane)nickel(II) chloride

Author

Satake, Yasuhiro, Ihara, Yoshinori, Senda, Hitoshi, Suzuki, Masatatsu, and Uehara, Akira

Subjects
Cyclic compounds -- Research, Nickel -- Research, Molecular structure -- Research, Chemistry
Abstract

The nickel(II) complex cis-(Ni isocyclam H2O 2)Cl2.2H2O was synthesized and characterized. The diaqua complex was prepared by the dissolution of cis-(Ni en isocyclam)Cl2.4H2O in water and subsequent adjustment of the pH by HCl. The single-crystal X-ray structure of the complex consists of two coordinated water molecules at the cis positions of the Ni(II)-N4O2 octahedron with the isocyclam coordinated to the Ni(II) ion in a folded manner. TG, DTA and DSC measurements on the complex revealed that thermal reaction involved deaquation-anation with the cis geometry maintained.

Published
1992

44. Stress-induced hemorrhagic gastric ulcer after successful Helicobacter pylori eradication: two case reports

Author

Miyamoto Mitsuaki, Okumura Toshikatsu, Uehara Akira, Moriya Mitsuru, and Kohgo Yutaka

Subjects
Medicine
Abstract

Abstract Introduction Helicobacter pylori infection is a major cause of gastric ulcers, and Helicobacter pylori eradication drastically reduces ulcer recurrence. It has been reported, however, that severe physical stress is closely associated with gastric ulceration even in Helicobacter pylori -negative patients. Case presentation We report the cases of a 47-year-old Japanese man and a 69-year-old Japanese man who developed psychological stress-induced hemorrhagic gastric ulcers, in both of whom Helicobacter pylori had been successfully eradicated. Conclusion Our cases strongly suggest that not only physical but also psychological stress is still an important pathogenic factor for peptic ulceration and accordingly that physicians should pay attention to the possible presence of psychological stress in the management of patients with peptic ulcers.

Published
2011
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