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30 results on '"Watanabe, Mayuko"'

1. Probable effects of polypharmacy and equivalent doses of psychotropic drugs on prevalence of adverse drug events among psychiatric inpatients in a general hospital in Japan

Author

Aoyama, Keisuke, primary, Tachi, Tomoya, additional, Kubo, Satoaki, additional, Koyama, Aisa, additional, Watanabe, Mayuko, additional, Aoyama, Satoshi, additional, Noguchi, Yoshihiro, additional, Tanaka, Kazuhide, additional, Yasuda, Masahiro, additional, Shibata, Akihiko, additional, Mizui, Takashi, additional, and Teramachi, Hitomi, additional

Published
2024
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3. In Situ Observation of the Movement of Magnetic Particles in Polyurethane Elastomer Densely Packed Magnetic Particles Using Synchrotron Radiation X-ray Computed Tomography

Author

Chen, Kejun, primary, Watanabe, Mayuko, additional, Takeda, Yoshihiro, additional, Maruyama, Takayuki, additional, Uesugi, Masayuki, additional, Takeuchi, Akihisa, additional, Suzuki, Motohiro, additional, Uesugi, Kentaro, additional, Yasutake, Masahiro, additional, Kawai, Mika, additional, and Mitsumata, Tetsu, additional

Published
2022
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4. 58‐3: Distinguished Paper: High‐Efficient Quantum‐Dot Light‐Emitting Diodes with Blue Cadmium‐free Quantum Dots

Author

Yusuke Sakakibara, Tanaka Masanori, Watanabe Mayuko, Tetsuji Itoh, Akiharu Miyanaga, Mikihiro Takasaki, Keisuke Kitano, Tatsuya Ryowa, Makoto Izumi, Nikata Soichiro, Ogura Yuko, Masaya Ueda, and Takeshi Ishida

Subjects
Cadmium, Materials science, chemistry, business.industry, Quantum dot, law, Optoelectronics, chemistry.chemical_element, business, Light-emitting diode, law.invention
Published
2020
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5. High‐efficiency quantum dot light‐emitting diodes with blue cadmium‐free quantum dots

Author

Tetsuji Itoh, Masaya Ueda, Mikihiro Takasaki, Tanaka Masanori, Nikata Soichiro, Keisuke Kitano, Ogura Yuko, Tatsuya Ryowa, Watanabe Mayuko, Akiharu Miyanaga, Takeshi Ishida, Yusuke Sakakibara, and Makoto Izumi

Subjects
Thesaurus (information retrieval), Cadmium, Materials science, business.industry, chemistry.chemical_element, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, law.invention, chemistry, law, Quantum dot, Optoelectronics, Electrical and Electronic Engineering, business, Light-emitting diode
Published
2020
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7. Development of Efficient Blue Cadmium-Free Quantum Dot Light-Emitting Diodes

Author

Ryowa, Tatsuya, primary, Sakakibara, Yusuke, additional, Kitano, Keisuke, additional, Ueda, Masaya, additional, Izumi, Makoto, additional, Ogura, Yuko, additional, Tanaka, Masanori, additional, Nikata, Soichiro, additional, Watanabe, Mayuko, additional, Takasaki, Mikihiro, additional, Itoh, Tetsuji, additional, and Miyanaga, Akiharu, additional

Published
2020
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9. 58‐3: Distinguished Paper: High‐Efficient Quantum‐Dot Light‐Emitting Diodes with Blue Cadmium‐free Quantum Dots

Author

Ryowa, Tatsuya, primary, Ishida, Takeshi, additional, Sakakibara, Yusuke, additional, Kitano, Keisuke, additional, Ueda, Masaya, additional, Izumi, Makoto, additional, Ogura, Yuko, additional, Tanaka, Masanori, additional, Nikata, Soichiro, additional, Watanabe, Mayuko, additional, Takasaki, Mikihiro, additional, Itoh, Tetsuji, additional, and Miyanaga, Akiharu, additional

Published
2020
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10. High‐efficiency quantum dot light‐emitting diodes with blue cadmium‐free quantum dots

Author

Ryowa, Tatsuya, primary, Ishida, Takeshi, additional, Sakakibara, Yusuke, additional, Kitano, Keisuke, additional, Ueda, Masaya, additional, Izumi, Makoto, additional, Ogura, Yuko, additional, Tanaka, Masanori, additional, Nikata, Soichiro, additional, Watanabe, Mayuko, additional, Takasaki, Mikihiro, additional, Itoh, Tetsuji, additional, and Miyanaga, Akiharu, additional

Published
2020
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17. An Analysis of the Japanese viewpoint on regulatory policy of virtual child pornography

Author

Watanabe, Mayuko

Subjects
Regulatory policy of child pornography, Freedom of expression, education, ddc:330, Human rights, humanities, Virtuality
Abstract

The Japanese law "Act on Regulation and Punishment of Acts Relating to Child Prostitution and Child Pornography, and the Protection of Children" (the Child Pornography Prohibition Act) does not regulate virtual child pornography such as comics, cartoons, animation, and games. As a result, cases in which Japan-made virtual child pornography influenced sexual crimes against children frequently occur not only domestically but also internationally. Japan has been criticized of that by the international community. This study set a research question on what the Japanese viewpoint is over regulatory policy on virtual child pornography. It analyzed the legislative process of the second revision of the Child Pornography Prohibition Act in order to reveal a part of the viewpoint in Japan. The study found that in discussing the legislative process over virtual child pornography regulation, the viewpoint of giving priority to 'freedom of expression' was more dominant than that of protecting the human rights of children.

Published
2017

18. 58‐3: Distinguished Paper:High‐Efficient Quantum‐Dot Light‐Emitting Diodes with Blue Cadmium‐free Quantum Dots

Author

Ryowa, Tatsuya, Ishida, Takeshi, Sakakibara, Yusuke, Kitano, Keisuke, Ueda, Masaya, Izumi, Makoto, Ogura, Yuko, Tanaka, Masanori, Nikata, Soichiro, Watanabe, Mayuko, Takasaki, Mikihiro, Itoh, Tetsuji, and Miyanaga, Akiharu

Abstract

We report outstanding electroluminescence properties of high efficient blue cadmium‐free quantum dot light emitting diodes (QD‐LED). External quantum efficiency (EQE) of 14.7% was achieved for QD‐LED emitting at 428nm. Furthermore we developed high efficiency and narrow wavelength emission Zinc Selenide (ZnSe) nanocrystals emitting at 445nm and achieved QD‐LED with an EQE of 10.7%. These new QDs have great potential to be used in next generation QD‐LED display with wide colour gamut.

Published
2020
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19. Sa1754 A Computer-Aided Diagnosis System for Endocytoscopy With Narrow-Band Imaging Provides Highly Accurate Diagnosis

Author

Misawa, Masashi, primary, Kudo, Shin-ei, additional, Mori, Yuichi, additional, Kataoka, Shinichi, additional, Maeda, Yasuharu, additional, Sako, Tomoya, additional, Watanabe, Mayuko, additional, Kudo, Toyoki, additional, Hisayuki, Tomokazu, additional, Wakamura, Kunihiko, additional, Hayashi, Takemasa, additional, Miyachi, Hideyuki, additional, Katagiri, Atsushi, additional, Ishida, Fumio, additional, Inoue, Haruhiro, additional, Nimura, Yukitaka, additional, and Mori, Kensaku, additional

Published
2016
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20. Regulations and media literacy education on online sexual information: A Japanese perspective

Author

Watanabe, Mayuko

Subjects
Media literacy,Internet education,Mobile communications,Contents regulation,Harmful information,Child porngraphy, Harmful information, ddc:330, Mobile communications, Media literacy, Contents regulation, Child porngraphy, Internet education
Abstract

This paper presents a Japanese perspective on measures against online sexual informaiton. A research queistion is set on what kinds of measures are required in order to protect youth from the harmful influence of online sexual informaiton. The paper firstly examines measures initiated by both national and local governments as well as by cell phone carriers, and secondly explores how to protect youth from potential online sexual dangers toward them. Lastly, the paper investigates the impact of online sexual information on Japanese young people's behaviors and values in comparison with that of other countries in an attempt to provide the basis for accurate measures. The results of the research found that online sexual information has some significant impact on young people, including the increase of the curiosity for sexual crimes.

Published
2011

21. Frequency spectra of vibration transmissibility for magnetic elastomers with various plasticizer contents.

Author

Umehara, Yasuhiro, Endo, Hiroyuki, Watanabe, Mayuko, Kikuchi, Takehito, Kawai, Mika, and Mitsumata, Tetsu

Subjects
PLASTICIZERS, POLYURETHANES, VIBRATION (Mechanics)
Abstract

The effect of plasticizer content on the vibration absorbing properties for polyurethane elastomers was investigated. A natural frequency appeared on the frequency spectra at around 100 Hz. The natural frequency linearly decreased, and the transmissibility also decreased with the plasticizer content. Magnetic elastomers containing carbonyl iron particles with a dimeter of 7.0 μm also showed a natural frequency at ∼260 Hz and the natural frequency significantly decreased with the plasticizer content. The decrease in the transmissibility with the plasticizer content was larger than that for polyurethane elastomers. The natural frequency for magnetic elastomers increased by several ten Hz by a magnetic field of 60 mT although the transmissibility was independently of the plasticizer content. The effect of load on the natural frequency for these elastomers was also investigated and it was found that the natural frequency is proportional to the storage modulus, G, with different two slopes depending on the mass of the system, m. The linear relation between the natural frequency and (G'/m)1/2 revealed that the observed vibration can be basically described by a simple harmonic oscillation. [ABSTRACT FROM AUTHOR]

Published
2018
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29. Anomalous Conformational Change in 1-Butyl-3-methylimidazolium Tetrafluoroborate--D2O Mixtures.

Author

Hatano, Naohiro, Watanabe, Mayuko, Takekiyo, Takahiro, Abe, Hiroshi, and Yoshimura, Yukihiro

Subjects
*CHEMICAL equilibrium, *CATIONS, *TETRAFLUOROBORATES, *IONIC liquids, *IMIDAZOLES
Abstract

We have investigated the effect of deuterated water on the conformational equilibrium between the gauche and trans conformers of the [bmim] cation in mixtures of water and 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim][BF4]), an ionic liquid, at room temperature. A comparison of the results obtained from solutions made with H2O and with D2O highlights an anomalous conformational change in the D2O solution showing an extended N-shaped behavior. The gauche conformer of the [bmim] cation in D2O increased up to x = ~50 (D2O mol %); however, it decreased up to higher water concentrations of x = ~85 before again increasing drastically toward x = ~100. We provide spectroscopic evidence that the anomalous conformational dynamics of the [bmim] cation in D2O is directly related to the H/D exchange reaction of the C-H group at position 2 of the imidazolium ring. [ABSTRACT FROM AUTHOR]

Published
2012
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30. Involvement of Ammonia in Maintenance of Cytosolic Glutamine Synthetase Activity in Pisum sativum Nodules.

Author

Suganuma, Norio, Watanabe, Mayuko, Yamada, Takayuki, Izuhara, Takumi, Yamamoto, Koji, Nishimura, Maya, and Toriyama, Kanako

Subjects
*AMMONIA, *CYTOSOL, *GLUTAMINE synthetase, *PEAS, *GENETIC transcription in plants, *PLANT development, *MESSENGER RNA, *PHYSIOLOGY
Abstract

Regulatory mechanisms of glutamine synthetase (GS, EC 6.3.1.2) activity in pea (Pisum sativum L.) nodules were investigated by using the pea mutant E135 (sym13) that forms ineffective nodules. GS activity, and the levels of polypeptides and mRNA for cytosolic GS in nitrogenfixing effective nodules increased during plant development while those in roots remained low. In the ineffective E135 nodules, GS activity and the level of polypeptides for GS were similar to those in effective nodules at the early stages of plant development, but later GS activity and level of polypeptides were lower than those found in roots although the level of the mRNA in the ineffective nodules did not decrease, and was much higher than that in roots. GS activity in the ineffective nodules at the later stages of plant development was enhanced by treatment with ammonia although the effect was transient. The treatment with ammonia also increased the level of polypeptides, but hardly affected the level of the mRNA for GS in ineffective nodules. These results suggest that the maintenance of cytosolic GS activity in pea nodules is regulated post-transcriptionally by the effectiveness of the nodules, and that ammonia produced by nitrogen fixation is involved in the maintenance of GS activity at a post-transcriptional level [ABSTRACT FROM AUTHOR]

Published
1999
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