Daichi Oka, S. Yusa, Koji Kimura, Artoni Kevin R. Ang, Naohisa Happo, Kouichi Hayashi, Tomoteru Fukumura,
Local atomic arrangements of dielectric ε-Ga2O3 epitaxial thin films grown on indium doped tin oxide (ITO) and α-Al2O3 substrates were investigated by combining transmission electron microscopy (TEM) and X-ray fluorescence holography (XFH). TEM showed the orthorhombic lattice structure for the ε-Ga2O3 thin film on both the substrates and a significant in-plane Ga ion displacement on α-Al2O3. However, XFH revealed a partial disorder of Ga vacancies and a large displacement along the a-axis on ITO. On ...
Tópico(s): Microwave Dielectric Ceramics Synthesis
2019 - Institute of Physics | Japanese Journal of Applied Physics
Kiyoshi Suzuki, Koji Yamamoto, Yutaka Kariya, Hiroshi Maéda, Takeshi Ishimaru, Shuichi Miyaura, Masahiro Fujii, Akiko Yusa, Eun Ji Joo, Koji Kimata, Reiji Kannagi, Yeong Shik Kim, Mamoru Kyogashima,
Tópico(s): Cell Adhesion Molecules Research
2008 - Springer Science+Business Media | Glycoconjugate Journal
Tetsuo Yazawa, Tadashi Shojo, Atsushi Mineshige, Shin‐ichi Yusa, Masafumi Kobune, Koji Kuraoka,
A proton-conducting solid electrolyte membrane based on polyvinyl phosphonic acid (PVPA) and 3-glycidoxypropyltrimethoxysilane was developed via the sol–gel process. The electrical conductivity of the organically-modified membrane obtained with optimum composition was 3.7 × 10− 2 S·cm− 1 at 353 K under 90% of relative humidity (RH), which was sufficient for its practical use as a solid electrolyte for fuel cells. In addition, a membrane based on polyphosphoric acid (PPA) and alkoxysilane was fabricated ...
Tópico(s): Advanced battery technologies research
2008 - Elsevier BV | Solid State Ionics
Katsuaki Suzuki, Yusa Takemoto, Shohei Takaoka, Koji Taguchi, Yoshiaki Uchida, Dmitrii G. Mazhukin, И. А. Григорьев, Rui Tamura,
The liquid crystalline chiral nitroxide biradical ( S , S , S , S )- 3 synthesized has shown much larger ‘positive magneto-LC effects’ in the chiral nematic (N*) phase than the monoradical ( S , S )- 1 .
Tópico(s): Nonlinear Dynamics and Pattern Formation
2016 - Royal Society of Chemistry | Chemical Communications
Gerardo F. Estoy, Yoichi Yusa, Takashi Wada, Hironori Sakurai, Koji Tsuchida,
Tópico(s): Therapeutic Uses of Natural Elements
2002 - Springer Science+Business Media | Applied Entomology and Zoology
Gerardo F. Estoy, Yoichi Yusa, Takashi Wada, Hironori Sakurai, Koji Tsuchida,
The effects of food availability and age on the reproductive traits of Pomacea canaliculata were determined in snails fed at three food levels under laboratory conditions (14L:10D; 25°C). In males, copulation frequency tended to increase with age, while food availability did not affect copulation frequency. In females, spawn production was lower in food-limited conditions, but current or weight-specific reproductive effort (RE) did not differ among food levels. The weight-specific RE and spawn frequency ...
Tópico(s): Mollusks and Parasites Studies
2002 - Springer Science+Business Media | Applied Entomology and Zoology
Masaki Akaogi, Kôji Abe, Hitoshi Yusa, Hiroshi Kojitani, Daisuke Mori, Yoshiyuki Inaguma,
Tópico(s): Nuclear materials and radiation effects
2015 - Springer Science+Business Media | Physics and Chemistry of Minerals
Masaki Akaogi, Kôji Abe, Hitoshi Yusa, Takayuki Ishii, Takashi Tajima, Hiroshi Kojitani, Daisuke Mori, Yoshiyuki Inaguma,
Tópico(s): Nuclear materials and radiation effects
2016 - Springer Science+Business Media | Physics and Chemistry of Minerals
Takeshi Fujiwara, Takumi Saito, Yusa Muroya, H. Sawahata, Yuji Yamashita, Shinya Nagasaki, Koji Okamoto, Hiroyuki Takahashi, Mitsuru Uesaka, Yosuke Katsumura, Satoru Tanaka,
The results of γ analyses of soil samples obtained from 50 locations in Fukushima prefecture on April 20, 2011, revealed the presence of a spectrum of radionuclides resulted from the accident of the Fukushima Dai-ichi nuclear power plant (FDNPP). The sum γ radioactivity concentration ranged in more than 3 orders of magnitude, depending on the sampling locations. The contamination of soils in the northwest of the FDNPP was considerable. The (131)I/(137)Cs activity ratios of the soil samples plotted ...
Tópico(s): Radioactive element chemistry and processing
2012 - Elsevier BV | Journal of Environmental Radioactivity
Yusa Muroya, Mingzhang Lin, Guozhong Wu, Hokuto Iijima, Koji Yoshii, T. Ueda, Hisaaki Kudo, Yosuke Katsumura,
The yield of the hydrated electron in the picosecond time range has been re-evaluated with an ultrafast pulse radiolysis system using a laser photocathode RF-gun in combination with a conventional one, and a value of 4.1±0.2 per 100 eV of absorbed energy at 20 ps was derived. This is consistent with recent experimental results using a time correlation method [Bartels et al., J. Phys. Chem. A 104, 1686-1691 (2000)] and with Monte-Carlo calculations [Muroya et al., Can. J. Chem. 80 1367-1374 (2002)].
Tópico(s): Advanced Chemical Physics Studies
2004 - Elsevier BV | Radiation Physics and Chemistry
Andrew J. Martin, Masayuki Takahashi, Koji Umeda, Yu Yusa,
Tópico(s): Spatial and Panel Data Analysis
2003 - | Acta Geophysica Polonica
Yusuke Kunieda, Takayuki Okumo, Hideshi Ikemoto, Naoki Adachi, Midori Tanaka, Taro Kimura, Kanako Yusa, Koji Kanzaki, Masataka Sunagawa,
Boiogito (BO), a Japanese traditional herbal medicine, has been proven to be clinically effective against knee osteoarthritis (KOA)-associated pain. However, the therapeutic mechanism of BO remains unclear. Thus, we investigated the analgesic mechanism of BO using a rat KOA model. KOA was induced by destabilization of the medial meniscus (DMM). Rats were allocated into the following four groups: control, sham, DMM, and DMM + BO groups. Rotarod test was performed to evaluate the pain-related locomotive ...
Tópico(s): Sesquiterpenes and Asteraceae Studies
2021 - Multidisciplinary Digital Publishing Institute | Applied Sciences
Kôji Sumino, Ichiro Yonenaga, A. Yusa,
The characteristics of the mechanical properties of float-zone silicon crystals doped with oxygen at concentrations of 1.0∼1.5×1017 cm-3 are investigated. The strength of the doped crystals is measured to be considerably higher than that of ordinary float-zone crystals. The high strength of such doped crystals is found to be retained even after heat-treatment at 1050°C, which softens Czochralski silicon crystals drastically.
Tópico(s): Silicon Nanostructures and Photoluminescence
1980 - Institute of Physics | Japanese Journal of Applied Physics
Yusa Muroya, Mingzhang Lin, Takahiro Watanabe, Guozhong Wu, T. Kobayashi, Koji Yoshii, T. Ueda, Mitsuru Uesaka, Yosuke Katsumura,
In order to study the early events in radiation physics and chemistry, two kinds of new pulse radiolysis systems with higher time resolution based on pump-and-probe method have been developed at the Nuclear Engineering Research Laboratory, the University of Tokyo. The first one, a few picosecond (2 ps at FWHM) electron beam (pump) from an 18 MeV S-band Linac using a laser photocathode RF gun (BNL/KEK/SHI type: GUN IV) was operated with a femtosecond laser pulse (100 fs at FWHM), which also acted as ...
Tópico(s): Nuclear Physics and Applications
2002 - Elsevier BV | Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment
Yusa Muroya, Takahiro Watanabe, Guozhong Wu, Xifeng Li, T. Kobayashi, J. Sugahara, T. Ueda, Koji Yoshii, Mitsuru Uesaka, Yosuke Katsumura,
In order to reveal the radiation-induced phenomena in the time scale of picosecond, or even sub-picosecond, a new sub-picosecond pulse radiolysis system has been designed and developed at Nuclear Engineering Research Laboratory (NERL), the University of Tokyo. The system is composed of the 18 MeV S-band linac with a laser driven photocathode rf-gun and a chicane-type magnetic compressor, a femtosecond Ti:Sapphire laser, and the synchronization system. At a preliminary experiment the timing jitter ...
Tópico(s): Gyrotron and Vacuum Electronics Research
2001 - Elsevier BV | Radiation Physics and Chemistry
T. Kobayashi, Mitsuru Uesaka, Yousuke Katsumura, Yusa Muroya, Takahiro Watanabe, T. Ueda, Koji Yoshii, Kazuhisa Nakajima, Xiongwei Zhu, M. Kando,
For sub-picosecond pump-and-probe-type radiation chemistry work, a new synchronized electron linac and laser system was installed in the Nuclear Engineering Research Laboratory (NERL) of University of Tokyo. The new laser system, with a Ti:Sapphire oscillator (795 nm) and amplifiers, generates 300 ps pulses at 10 Hz. The laser is transported through the vacuum chamber and then split into two beams. The first is compressed and converted to the third harmonics (265 nm, <250 μJ, 4–11 ps) so as to drive ...
Tópico(s): Gyrotron and Vacuum Electronics Research
2002 - Taylor & Francis | Journal of Nuclear Science and Technology
Mitsuru Uesaka, Takahiro Watanabe, T. Kobayashi, T. Ueda, Koji Yoshii, Guozhong Wu, Xifeng Li, Yusa Muroya, J. Sugahara, Kenichi Kinosita, Nasr Hafs, Hiroyuki Okuda, Teppei Nishihara, Yohei Terada, Kazuhisa Nakajima, Yosuke Katsumura,
Abstract Two-hundred and forty femtosecond, 17 MeV electron beam generation and 330 fs (rms) resolved synchronization with 100 fs Ti : Sapphire laser are available for radiation chemistry research at the S-band twin linacs of Nuclear Engineering Research Laboratory, University of Tokyo. Further, numerical and experimental analyses on the laser plasma linac of ∼10 fs ∼20 MeV electron beam using 12 TW 50 fs laser and laser plasma wake-wave breaking are under way. It is synchronized by a 33 fs step with ...
Tópico(s): Laser-induced spectroscopy and plasma
2001 - Elsevier BV | Radiation Physics and Chemistry
Masahiro Fujii, Akiko Yusa, Yukihiro Yokoyama, Toshio Kokuryo, Nobuyuki Tsunoda, Koji Oda, Masato Nagino, Tsuyoshi Ishimaru, Yoshie Shimoyama, Hirotoshi Utsunomiya, Hiroji Iwata, Yoshiko Itoh, Johbu Itoh, Reiji Kannagi, Mamoru Kyogashima,
Tópico(s): Carbohydrate Chemistry and Synthesis
2010 - Springer Science+Business Media | Glycoconjugate Journal
Koji Umeda, Ryo Komatsu, Atsushi Tanase, Yasuhisa Yusa,
We evaluated the cooling history of the Cretaceous Ryoke Granitic Rocks (Takahama Granitic Rocks, TGR) exposed in the Takahama area (Shikoku), with special reference to the thermal effect caused by later intrusive rocks. The Neogene andesitic intrusive rocks intrude into the TGR in the southern part of the Takahama area. These rocks together belong to the Setouchi Volcanic Rock Suite. The K-Ar whole rock age of a sample, determined in this study, is 12.2±0.6 Ma. For the evaluation of the thermal effect ...
Tópico(s): Geochemistry and Geologic Mapping
2001 - Japan Association of Mineralogical Sciences | Japanese Magazine of Mineralogical and Petrological Sciences
Keisuke Suzuki, T. KATAKURA, Takeshi Yusa, Koji Murakami, Tomohiko Sato, Kenji Sato, Michio Aoyama, RIKURO ITO, Kouki Kimura,
Tópico(s): Medical Imaging Techniques and Applications
1991 - Japan Radiological Society | Japanese Journal of Radiological Technology
Tatsuo Izumida, Koji Kato, Fumio Kawamura, Hideo Yusa,
Alternating square-wave current electrolysis using a Na2SO4 electrolyte was studied as a removal method for radioactive contaminated oxidation film on metal surfaces. After the oxidation film was selectively removed using the Na2SO4 electrolyte, base metal was removed.Based on a diffusion model in which the removal rate of the surface oxidation film depends on the diffusion rates of O2− and Fe2+ ions in the film, the optimum cycle of the alternating square current was estimated to be 90 s (the square ...
Tópico(s): Nuclear Materials and Properties
1985 - Taylor & Francis | Nuclear Technology
Hideki Kano, Takeshi Nosaka, Koji Higuchi, A. Yusa, Atsushi Takahashi,
Abstract Well known different characteristics of Gamma at Red, Green and Blue should be compensated, individually. It is normally adjusted by Graphic Processing Unit. We developed first 13BIT (8192 Gray‐Scales) equivalent Source Driver and Timing Controller for RGB individual Gamma control within the Driving Unit. We made a Demonstration‐Set, and confirmed to achieve the real color and flexible color control.
Tópico(s): Color Science and Applications
2008 - Wiley | SID Symposium Digest of Technical Papers
Tetsuo Yazawa, Tadashi Shojo, Atsushi Mineshige, Shin‐ichi Yusa, Masafumi Kobune, Koji Kuraoka,
Tópico(s): Advancements in Solid Oxide Fuel Cells
2008 - Elsevier BV | Fuel Cells Bulletin
Rie Ito, Koji Kitamura, Hidenori Inohara, Kosuke Yusa, Yasufumi Kaneda, Keisuke Nimura,
Infection with high-risk human papillomavirus (HPV) types is linked to the onset of several cancers. The mechanism of HPV infection, however, has not yet been fully elucidated. Here, using the newly developed HPV infectious pseudovirion (HPV PsV) and a genome-wide clustered regularly interspaced short palindromic repeat (CRISPR) screening system, we established an experimental system and searched for genes involved in HPV infection. The HPV PsV has the truncated herpes simplex virus thymidine kinase ( ...
Tópico(s): interferon and immune responses
2022 - Frontiers Media | Frontiers in Virology
Hiroko Yamakawa, Shunsuke Ebara, Akio Mizutani, Misaki Yoshida, Midori Sugiyama, Koji Yamamoto, Daisuke Komura, Miwako Kakiuchi, Shumpei Ishikawa, Kosuke Yusa, Daisuke Morishita,
... Shunsuke Ebara, Akio Mizutani, Misaki Yoshida, Midori Sugiyama, Koji Yamamoto, Daisuke Komura, Miwako Kakiuchi, Shumpei Ishikawa, Kosuke Yusa, Daisuke Morishita. Translational research of CDK12/13 inhibitor, ...
Tópico(s): Advanced Breast Cancer Therapies
2024 - American Association for Cancer Research | Cancer Research
T. Kobayashi, Mitsuru Uesaka, Yousuke Katsumura, Yusa Muroya, Takahiro Watanabe, T. Ueda, Koji Yoshii, Kazuhisa Nakajima, Xiongwei Zhu, M. Kando,
For sub-picosecond pump-and-probe-type radiation chemistry work, a new synchronized electron linac and laser system was installed in the Nuclear Engineering Research Laboratory (NERL) of University of Tokyo. The new laser system, with a Ti:Sapphire oscillator (795 nm) and amplifiers, generates 300 ps pulses at 10 Hz. The laser is transported through the vacuum chamber and then split into two beams. The first is compressed and converted to the third harmonics (265 nm, <250 μJ, 4–11 ps) so as to drive ...
Tópico(s): Particle Accelerators and Free-Electron Lasers
2002 - Taylor & Francis | Journal of Nuclear Science and Technology
T. Kobayashi, Yusa Muroya, Takahiro Watanabe, T. Ueda, Koji Yoshii, Mitsuru Uesaka, Yosuke Katsumura, Kazuhisa Nakajima, Xiaoqiang Zhu,
For a sub-picosecond pump-and-probe-type radiation chemistry work, a new synchronized electron linac and laser system was installed in Nuclear Engineering Research Laboratory (NERL) of University of Tokyo. The new 0.3 TW laser system with a Ti:Sapphire oscillator (795 nm) and amplifiers generate 300 ps pulses at 10 Hz at first. The laser is splitted into the two beams. The first is compressed to 4 ∼ 11 ps so as to drive the RF-Gun and generate a pump-electron-beam. The second is compressed to 100 fs ...
Tópico(s): Particle accelerators and beam dynamics
2002 - IOS Press | International Journal of Applied Electromagnetics and Mechanics
Hideo Matsumura, Koji Kawasaki,
... 38) Google Scholar , 18 Shimodaira K Yoshida H Yusa H Kanazawa T. Palatal augmentation prosthesis with alternative ...
Tópico(s): Dental Radiography and Imaging
2000 - Elsevier BV | Journal of Prosthetic Dentistry
Kōji Yoshida, Naomi Hayashida, Yoshiko Fukushima, Akira Ohtsuru, Takashi Ohba, Arifumi Hasegawa, Hisashi Satô, F Shishido, Kiyotaka Yasui, Atsushi Kumagai, Takeshi Yusa, Takashi Kudo, Shunichi Yamashita, Noboru Takamura,
Tópico(s): Radioactivity and Radon Measurements
2015 - Springer Science+Business Media | Japanese Journal of Radiology
Kimura Takuma, Matsuda Fumiho, Yusa Mayumi, Ohira Yasuko, Asano Yasunari, Ishikawa Koji, Ashihara Mutsumi,
2008 - Japanese Society of Psychosomatic Medicine | Shinshin igaku