Zobrazeno 1 - 10 of 44 pro vyhledávání: '"Ryoji Takeda"'
1
Akademický článek
Analysis of Deep Posterior Anal Fistulas by Magnetic Resonance Imaging: Site of Primary Abscess and Extension Patterns According to the Primary Abscess Depth
Autor: Yoshiro Araki, Ryuzaburo Kagawa, Masahiro Tomoi, Sadahiko Kita, Katsuhiko Mizuno, Yasumitsu Matsumura, Ryoji Takeda, Masaaki Awane
Publikováno v: Journal of the Anus, Rectum and Colon, Vol 2, Iss 4, Pp 130-138 (2018)
Objectives: The aim of this study was to use magnetic resonance imaging (MRI) to elucidate the site and depth of the primary abscesses associated with deep posterior anal fistulas and their extension patterns. Methods: We analyzed 176 consecutive pat
Externí odkaz: https://doaj.org/article/ab8e131303c14802a965798d7056a651
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2
Akademický článek
High intrinsic loss power of multicore magnetic nanoparticles with blood-pooling property for hyperthermia
Autor: Kizuku Nishimoto, Satoshi Ota, Guannan Shi, Ryoji Takeda, Suko Bagus Trisnanto, Tsutomu Yamada, Yasushi Takemura
Publikováno v: AIP Advances, Vol 9, Iss 3, Pp 035347-035347-5 (2019)
Magnetic hyperthermia is a promising application of magnetic nanoparticles (MNPs) in cancer therapy. It is important to consider and optimize the parameters that affect heat dissipation, such as particle diameters, structures, and surface coatings. I
Externí odkaz: https://doaj.org/article/53eba0ae5941431ab6d902504e52dbaa
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3
Akademický článek
Rotation of Magnetization Derived from Brownian Relaxation in Magnetic Fluids of Different Viscosity Evaluated by Dynamic Hysteresis Measurements over a Wide Frequency Range
Autor: Satoshi Ota, Ryoichi Kitaguchi, Ryoji Takeda, Tsutomu Yamada, Yasushi Takemura
Publikováno v: Nanomaterials, Vol 6, Iss 9, p 170 (2016)
The dependence of magnetic relaxation on particle parameters, such as the size and anisotropy, has been conventionally discussed. In addition, the influences of external conditions, such as the intensity and frequency of the applied field, the surrou
Externí odkaz: https://doaj.org/article/3fdaf835888441a2a803a726d070a8ca
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4
Effects of size and anisotropy of magnetic nanoparticles associated with dynamics of easy axis for magnetic particle imaging
Autor: Satoshi Ota, Yuki Matsugi, Ryoji Takeda, Takashi Yoshida, Keiji Enpuku, Takeru Nakamura, Yasushi Takemura, Satoshi Nohara, Teruyoshi Sasayama, Ichiro Kato
Publikováno v: Journal of Magnetism and Magnetic Materials. 474:311-318
The structure of magnetic nanoparticles affects the signal intensity and resolution of magnetic particle imaging, which is derived from the harmonics caused by the nonlinear response of magnetization. To understand the key effects of particle structu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a821ba086e22a98413c87a85912a7df2
https://doi.org/10.1016/j.jmmm.2018.11.043
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5
Enhanced specific loss power from Resovist (R) achieved by aligning magnetic easy axes of nanoparticles for hyperthermia
Autor: Satoshi Ota, Guannan Shi, Suko Bagus Trisnanto, Tsutomu Yamada, Ryoji Takeda, Yasushi Takemura
Publikováno v: Journal of Magnetism and Magnetic Materials. 473:148-154
In this study, we precisely calculated the specific loss powers (SLPs) of magnetic nanoparticles (MNPs) based on dynamic hysteresis measurements. The advantage of this evaluation method is that the intensity and frequency of the applied magnetic fiel
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce279c82c704c6673d25f0fc5ae0ccc1
http://hdl.handle.net/10131/00012483
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6
Analysis of Deep Posterior Anal Fistulas by Magnetic Resonance Imaging: Site of Primary Abscess and Extension Patterns According to the Primary Abscess Depth
Autor: Yasumitsu Matsumura, Ryoji Takeda, Masaaki Awane, Yoshiro Araki, Masahiro Tomoi, Sadahiko Kita, Katsuhiko Mizuno, Ryuzaburo Kagawa
Publikováno v: Journal of the Anus, Rectum and Colon, Vol 2, Iss 4, Pp 130-138 (2018)
Journal of the Anus, Rectum and Colon
Objectives The aim of this study was to use magnetic resonance imaging (MRI) to elucidate the site and depth of the primary abscesses associated with deep posterior anal fistulas and their extension patterns. Methods We analyzed 176 consecutive patie
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8320d6f56eb2c68b78d0f914b7c8e496
https://www.jstage.jst.go.jp/article/jarc/2/4/2_2018-002/_pdf/-char/en
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8
Layer-by-layer assembled magnetic prednisolone microcapsules (MPC) for controlled and targeted drug release at rheumatoid arthritic joints
Autor: Ryoji Takeda, Satoshi Ota, S. Latha, Christer Johansson, Yasushi Takemura, Chakkarapani Prabu, P. Selvamani, Fredrik Ahrentorp
Publikováno v: Journal of Magnetism and Magnetic Materials. 427:258-267
We report here in about the formulation and evaluation of Magnetic Prednisolone Microcapsules (MPC) developed in order to improve the therapeutic efficacy relatively at a low dose than the conventional dosage formulations by means of magnetic drug ta
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8256dda1668b0853f921ffd25f899569
https://doi.org/10.1016/j.jmmm.2016.11.030
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10
Preparation of a Magnetic-responsive Polycation with a Tetrachloroferrate Anion
Autor: Yuki Ohara, Chi M. Phan, Ryoji Takeda, Yasushi Takemura, Anita Hyde, Shin-ichi Yusa, Yuuki Kawata
Publikováno v: Chemistry Letters. 46:1473-1475
Poly[3-(methacrylamido)propyltrimethylammonium chloride] (PMAPTAC) with a well-controlled structure was reacted with FeCl3 to exchange the counter anion from chloride (Cl−) to tetrachloroferrate (FeCl4−) to prepare a magnetic-responsive polymer (
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::97e72fa1c49c07e027162a1dbda0e7b3
https://doi.org/10.1246/cl.170621
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