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Particuology 2011年第1期9卷 91-94页

作者： Daisuke Tashima masahisa otsubo Interdisciplinary Research Organization University of Miyazaki 1-1 Gakuenkibanadai-Nishi 1-1 Miyazaki 889-2192 Japan Department of Electrical and Electronic Engineering Faculty of Engineering University of Miyazaki 1-1 Gakuenkibanadai-Nishi 1-1 Miyazaki 889-2192 Japan

The space-charge distributions of electric double-layer capacitors （EDLCs）, which are energy storage devices, were examined with the pulsed electroacoustic （PEA） method. It was found that the experimental results could be influenced by the reflection and penetration of sound waves when the space-charge dis- tributions of EDLCs were measured with the PEA method. This is because EDLCs have a five-layer structure consisting of three materials （aluminum, cellulose, and activated carbon）. We calculated the reflection wave components that influenced the charge density through the acoustic impedance and the relative permittivity of the materials. In this way, we found that the changes in the space-charge distributions of EDLCs and their charge characteristics corresponded closely. We determined that measuring the space- charge distributions with the PEA method was effective for evaluating the charge accumulation of EDLCs. In this study, a polarized electrode was prepared for use in EDLCs. The ratio of the surface area to the average pore diameter of the polarized electrode was measured with the nitrogen adsorption method at 77 K. The relationship between the ratio of the surface area to the average pore size and the space-charge distributions of EDLCs is also discussed in this paper.

关键词： Electric double-layer capacitors Pulsed electroacoustic method Pore size

Combined laparoscopic and thoracoscopic repair of adult right-sided Bochdalek hernia with massive liver prolapse: A case report

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World Journal of Clinical Cases 2024年第14期12卷 2420-2425页

作者： Shinya Mikami Sae Kimura Yoshitsugu Tsukamoto Masaki Hiwatari Yasuhito Hisatsune Asako Fukuoka Tsunehisa Matsushita Takeharu Enomoto Takehito otsubo Department of Gastrointestinal and General Surgery St.Marianna University School of MedicineKanagawa 216-8511Japan

BACKGROUND A Bochdalek hernia(BH)is a congenital diaphragmatic hernia that often develops in the neonatal *** typically occurs on the left side of the diaphragm.A right-sided BH in an adult is *** SUMMARY A 45-year-old man was referred to our hospital because of an abnormal shadow seen on chest radiography during a medical check-up.A chest radiograph showed elevation of the right *** tomography showed prolapse of multiple intraabdominal organs into the right thoracic cavity,corresponding to a right-sided *** herniated contents included the stomach,transverse colon,and left lobe of the *** left lobe of the liver was enlarged,particularly the medial *** surgery was ***,the left lobe of the liver was completely trapped in the thoracic ***,thoracoscopic manipulation had to be performed to return the liver to the abdominal *** hernia was repaired with interrupted nonabsorbable sutures and reinforced with *** Combined laparoscopic and thoracoscopic surgery was successfully performed for right-sided BH with massive liver prolapse and abnormal liver morphology.

关键词： Bochdalek hernia Right-sided Adult Laparoscopic and thoracoscopic repair Liver prolapse Abnormal liver morphology Case report

The impact of the TIM gene family on tumor immunity and i mmunosuppression

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Cellular & Molecular Immunology 2014年第1期11卷 41-48页

作者： Muhammad Baghdadi masahisa Jinushi Hokkaido University Hokkaido Japan Research Center for Infection-Associated Cancer Institute for Genetic Medicine Hokkaido UniversityHokkaido Japan

Tumor immunoevasion is an advanced phase of cancer immunosurveillance in which tumor cells acquire the ability to circumvent host immune systems and exploit protumorigenic inflammation. T-cell immunoglobulin mucin （TIM） gene family members have emerged as critical checkpoint proteins that regulate multiple immune response phases and maintain immune homeostasis. Accumulating evidence demonstrates that tumor cells exploit TIM gene family members to evade immunosurveillance, whereas TIM gene family members facilitate the prevention of inflammation-related tumor progression. Thus, a comprehensive analysis to clarify the relative contributions of TIM gene family members in tumor progression may elucidate immunosurveillance systems in cancer patients.

关键词： antitumor immunity immunoevasion immunosurveillance TIM tumorigenic inflammation

Evaluation of soil fabric using elastic waves during load-unload

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第10期15卷 2687-2700页

作者： Yang Li Masahide otsubo Reiko Kuwano Institute of Industrial Science The University of Tokyo4-6-1 KomabaMeguro-kuTokyo153-8505Japan Public Works Research Institute 1-6 MinamiharaTsukubaIbaraki305-8516Japan

It is essential to assess the evolution of soil fabric as it has an important role in the mechanical responses of soils during complex loading *** contribution carries out the physical experiments using three granular materials in the *** variations of compression and shear wave velocities(Vp and Vs)are investigated during load-unload cycles under dry and drained *** discrete element method(DEM)simulations are performed to understand the evolution of soil fabric during the equivalent load-unload cycles using spherical *** and Vs are not always reversible even though the stress state regains its isotropic condition after unload,indicating that Vp and Vs are governed by not only the stress state but also the fabric *** variations of Vp/Vs are density-and stress-dependent;a higher level of stress ratio(s01/s03)threshold is observed for denser packings to trigger a significant change in wave velocity ratio(Vp/Vs)for experimental results using spherical glass beads and simulation data using spherical *** the particle shape,a higher s01/s03 threshold is found for more angular particles than rounded *** DEM result reveals that Vp/Vs of spherical particles can be correlated linearly with the evolution of fabric ratio(Fver/Fhor)during loadunload in a pre-peak range under dry and drained conditions.

关键词： Soil fabric Anisotropy Elastic waves Discrete element modelling Laboratory tests

How to Create“Asianism”:A Reading of Takeuchi Yoshimi’s “Asia as Method”and“Prospects for Asianism”

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Frontiers of Literary Studies in China-Selected Publications from Chinese Universities 2021年第1期15卷 4-31页

作者： SUZUKI masahisa Graduated School of Humanities and Society Hitotsubashi UniversityTokyo186-8601Japan

Takeuchi Yoshimi is one of the very few postwar Japanese intellectuals to openly engage in discussions on Asia intricacy and to deal with the most complicated component of the Japan-Asia relationship:problems of *** key feature of Takeuchi^approach lies in the fact that he is not only a profound thinker but also a sensitive *** this reason,in addition to the fact that it is already very difficult to form an objective and widely agreed view on Takeuchi and his approach,it is hard to avoid the emotional aspect when evaluating his *** essay does not aim to discuss his rights and wrongs;rather,it is an attempt to analyze the inner logic of Takeuchi^thoughts,to understand and grasp the intensity and structure of his thoughts and emotions,and to demonstrate where his sense of urgency lies,thereby allowing to view the examination of the diverse and complex nature of discourses on Asianism in Japan in a new light.

关键词： Takeuchi Yoshimi Asianism “Asia as Method ”“prospect for Asianism”

Determining a representative element volume for DEM simulations of samples with non-circular particles

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Particuology 2022年第9期20卷 29-43页

作者： Peter Adesina Catherine O'Sullivan Tokio Morimoto Masahide otsubo Dept.of Civil and Environmental Engineering Imperial College LondonSouth KensingtonLondon SW72AZUK Institute of Industrial Science The University of Tokyo4-6-1 Komaba Meguro-kuTokyo 153-8505Japan

Numerical studies on the number of particles or system size required to attain a representative element volume(REV)for discrete element method(DEM)simulations of granular materials have almost always considered samples with spherical or circular *** study considers how many particles are needed to attain a REV for 2D samples of 2-disc cluster particles where the particle aspect ratio(AR)was systematically *** and loose assemblies of particles were *** minimum REV was assessed both by considering the repeatability of static packing characteristics and the shearing behaviour in biaxial compression tests,and by investigating the effect of sample size on the measured characteris-tics and observed shearing *** repeatability of the data considered generally improved with increasing sample *** packing characteristics of the dense samples were more repeatable suggest-ing that the minimum REV reduces with increasing packing *** minimum REV was observed to be sensitive to the characteristic *** the overall responses of the samples during shear deformation were similar irrespective of the sample sizes,the smaller the sample size,the higher the fluctuations observed in the *** of the coefficient of variation of the fluctuations around the critical state stress ratio can provide insight as to whether a REV is *** particle AR influences the effect of sample size on shearing characteristics and thus the minimum number of particles required to attain a REV;this can be explained by the influence of AR on the number of contacts within the samples.

关键词： DEM Representative element volume Non-circular particles Particle shape Granular materials

Literary Activities among the ＂Educated Youth＂： Background on Bei Dao＇s Waves

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Frontiers of Literary Studies in China-Selected Publications from Chinese Universities 2017年第3期11卷 462-487页

作者： SUZUKI masahisa Graduate School of Language and Society Hitotsubashi University Tokyo 186-8601 Japan

This paper discusses how the literature was created based on the experiences of the ＂Educated Youth＂ in the reform and opening-up era. Firstly, the author summarizes the network and literary activities of the Educated Youth. Second, he analyzes the poetry of literary magazines that they expressed their own experiences in the reform era, and thirdly, he discusses the trial by the magazine＇s editorial staff to describe their experiences in fiction and its difficulties. Furthermore, this paper examines the origin of Chinese literature on 198os, especially the origin of modernism literature in China.

关键词： Educated Youth literary activities Bei Dao fiction Waves

Spatial and Temporal Changes of Floating Population in China Between 1990 and 2000

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Chinese Geographical Science 2007年第2期17卷 99-109页

作者： LIU Chen Kuninori otsubo WANG Qinxue Toshiaki ICHINOSE Sadao ISHIMURA National Institute for Environment Studies 16-20nogawa Tsukuba Ibaraki 305-8506 Japan Tsurumi University School of Dental Medicine 2-1-3 Tsurumi Tsurumi Yokohama 230-8501 Japan

By studying the county-level census data of 1990 and 2000, we analyzed the spatial and temporal changes in the floating population in China between 1990 and 2000. The results of the analysis revealed the following characteris- tics. First, the spatial distribution of the migrants (referred to as 'floaters' in this paper) became increasingly concentrated in the cities during the 1990s. Second, the number of floaters increased rapidly during this period, and the area in which the floaters settled expanded quickly into four population explosion belts: the coast, the Changjiang River Delta, the Beijing-Guangzhou Railway and national border belts. Third, the number of inter-province floaters increased rapidly and exceeded that of intra-province floaters in the 1990s. In addition, to obtain a quantitative relationship between the number of floaters and 10 socio-economic variables by using statistical methods and also to find the chiefly important pulling factors of the migration destination, the authors selected approximately 100 cities with the largest population of floaters. Consequently, we found that four factors-GDP, passenger trips per 10,000 persons, per capita GDP and foreign direct investment-could provide an explanation for 83.7% of the number of floaters in 2000. The GDP showed the highest correlation with the number of floaters, suggesting that a highly developed economy is the most important factor that attracts floaters. Furthermore, a fairly close relationship between the number of floaters and the GDP was also found in 2000 for all the counties.

关键词： floating population county-level census spatial and temporal changes China

Ring Theory and Related Topics

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Frontiers of Mathematics in China 2016年第4期11卷 763-764页

作者： Nanqing DING Tai Keun KWAK Fang LI masahisa SATO Department of Mathematics Nanjing University Nanjing 210093 China Department of Mathematics Daejin University Pocheon 11159 Korea Department of Mathematics Zhejiang University (Yuquan Campus) Hangzhou 310027 China Yamanashi University Takeda 4-3-11 Kofu Yamanashi 400-8511 Japan

The special issues ＂Ring Theory and Related Topics （I, II）＂ of Frontiers of Mathematics in China （FMC） are an outcome of the Seventh China-Japan- Korea International Conference on Ring Theory held from July 1 to... 详细信息

关键词： RING theory HOPF algebras REPRESENTATION theory (Algebra)

Need for pancreatic stenting after sphincterotomy in patients with difficult cannulation

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World Journal of Gastroenterology 2014年第26期20卷 8617-8623页

作者： Kazunari Nakahara Chiaki Okuse Keigo Suetani Yosuke Michikawa Shinjiro Kobayashi Takehito otsubo Fumio Itoh Department of Gastroenterology and Hepatology St. Marianna University School of Medicine Department of Gastroenterological and General Surgery St. Marianna University School of Medicine

AIM: To investigate the need for pancreatic stenting after endoscopic sphincterotomy (EST) in patients with difficult biliary cannulation.

关键词： Pancreatic stenting Pancreatic guidewire placement Post-endoscopic retrograde cholangiopancreatography pancreatitis Endoscopic sphincterotomy Endoscopic retrograde cholangiopancreatography