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World Journal of Experimental Medicine 2024年第2期14卷 103-113页

作者： Ming Zhou Tao-Sheng Li Hiroshi Abe hideo akashi Ryoji Suzuki Yoshio Bando Department of Anatomy Akita University Graduate School of MedicineAkita 010-8543Japan Department of Stem Cell Biology Atomic Bomb Disease InstituteNagasaki UniversityNagasaki 852-8523Japan Sendai Old Age Refresh Station A Long-term Care Health FacilitySendai 981-1105Japan

BACKGROUND ATP sensitive K+(K_(ATP))channels are ubiquitously distributed in various of cells and tissues,including the *** play a role in the pathogenesis of myocardial and liver *** To evaluate the radiation-induced changes in the expression of K_(ATP)channel subunits in the mouse liver to understand the potential role of K_(ATP)channels in radiation *** Adult C57BL/6 mice were randomly exposed toγ-rays at 0 Gy(control,n=2),0.2 Gy(n=6),1 Gy(n=6),or 5 Gy(n=6).The livers were removed 3 and 24 h after radiation *** and eosin staining was used for morphological observation;immunohistochemical staining was applied to determine the expression of K_(ATP)channel subunits in the liver *** Compared with the control group,the livers exposed to 0.2 Gyγ-ray showed an initial increase in the expression of Kir6.1 at 3 h,followed by recovery at 24 h after *** to a high dose of 5.0 Gy resulted in decreased expression of Kir6.1 and increased expression of SUR2B at 24 ***,the expression of Kir6.2,SUR1,or SUR2A had no remarkable changes at 3 and 24 h after exposure to any of these *** The expression levels of Kir6.1 and SUR2B in mouse liver changed differently in response to different radiation doses,suggesting a potential role for them in radiation-induced liver injury.

关键词： Radiation exposure ATP-sensitive K^(+)channel Mouse Liver

Localization of ATP-sensitive K^+ channel subunits in rat liver

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World Journal of Experimental Medicine 2019年第2期9卷 14-31页

作者： Ming Zhou Kiwamu Yoshikawa hideo akashi Mitsutaka Miura Ryoji Suzuki Tao-Sheng Li Hiroshi Abe Yoshio Bando Department of Anatomy Akita University Graduate School of MedicineAkita 010-8543Japan Department of Cell Biology and Morphology Akita University Graduate School of MedicineAkita 010-8543Japan Department of Stem Cell Biology Atomic Bomb Disease InstituteNagasaki UniversityNagasaki 852-8523Japan TRUST A Long-Term Care Health FacilitySendai 980-0011Japan

BACKGROUND ATP-sensitive K^+(KATP)channels were originally found in cardiac myocytes by Noma in *** channels were formed by potassium ion-passing poreforming subunits(Kir6.1,Kir6.2)and regulatory subunits SUR1,SU2A and SUR2B.A number of cells and tissues have been revealed to contain these channels including hepatocytes,but detailed localization of these subunits in different types of liver cells was still *** To investigate the expression of KATP channel subunits in rat liver and their localization in different cells of the *** Rabbit anti-rat SUR1 peptide antibody was raised and purified by antigen immunoaffinity column *** of Sprague-Dawley rats were used for liver protein extraction for immunoblot analysis,seven of them were used for immunohistochemistry both for the ABC method and immunofluorescence *** of Wistar rats were used for the isolation of hepatic stellate cells(HSCs)and Kupffer cells for both primary culture and *** Immunoblot analysis showed that the five kinds of KATP channel subunits,***6.1,Kir6.2,SUR1,SUR2A,and SUR2B,were detected in *** staining showed that Kir6.1 and Kir6.2 were weakly to moderately expressed in parenchymal cells and sinusoidal lining cells,while SUR1,SUR2A,and SUR2B were mainly localized to sinusoidal lining cells,such as HSCs,Kupffer cells,and sinusoidal endothelial *** for SUR2A and SUR2B was expressed in the hepatocyte *** immunofluorescence staining further showed that the pore-forming subunits Kir6.1 and/or Kir6.2 colocalized with GFAP in rat liver sections and primary cultured *** KATP channel subunits also colocalized with CD68 in liver sections and primary cultured Kupffer *** SUR subunits colocalized with GFAP in liver sections and colocalized with CD68 both in liver sections and primary cultured Kupffer *** addition,five KATP channel subunits colocalized with SE-1 in si

关键词： ATP-sensitive K^+channel Liver Hepatic stellate cells Kupffer cells Sinusoidal endothelial cells Rat

Superconductivity induced by field-driven proton injection

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Science Bulletin 2018年第1期63卷 5-6页

作者： hideo Hosono Materials Research Center for Element Strategy Tokyo Institute of Technology

Doping is a key operation to induce *** materials do not exhibit superconductivity in most cases of high Tcsystems but convert into superconductor when carriers are *** of impurity diminishes the long range ordering of spin,charge and/or orbitals,and superconductivity emerges in the neighbor of boundary between ordered and non-ordered *** parent phase of high-Tccuprate superconductors

关键词：超导性注射质子驱动超导体键操作绝缘体父母

Robust camera pose estimation by viewpoint classification using deep learning

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Computational Visual Media 2017年第2期3卷 189-198页

作者： Yoshikatsu Nakajima hideo Saito Department of Science and Technology Keio UniversityJapan

Camera pose estimation with respect to target scenes is an important technology for superimposing virtual information in augmented reality(AR). However, it is difficult to estimate the camera pose for all possible view angles because feature descriptors such as SIFT are not completely invariant from every perspective. We propose a novel method of robust camera pose estimation using multiple feature descriptor databases generated for each partitioned viewpoint, in which the feature descriptor of each keypoint is almost invariant. Our method estimates the viewpoint class for each input image using deep learning based on a set of training images prepared for each viewpoint class. We give two ways to prepare these images for deep learning and generating databases. In the first method, images are generated using a projection matrix to ensure robust learning in a range of environments with changing *** second method uses real images to learn a given environment around a planar pattern. Our evaluation results confirm that our approach increases the number of correct matches and the accuracy of camera pose estimation compared to the conventional method.

关键词： pose estimation augmented reality(AR) deep learning convolutional neural network

Urban climate in the Tokyo metropolitan area in Japan

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Journal of Environmental Sciences 2017年第9期29卷 54-62页

作者： Jun Matsumoto Fumiaki Fujibe hideo Takahashi Research Center for Climatology Department of Geography Tokyo Metropolitan University Department of Coupled Ocean-Atmosphere-Land Processes Research JAMSTEC

Long-term climate changes related with urbanization in Tokyo, Japan, and recent temperature and heavy rainfall distribution in the Tokyo metropolitan area are reviewed. A relatively high temperature increase in annual mean temperature at the rate of 3.0°C/century was detected in Tokyo for the period 1901–2015. Some observational evidence showed the existence of both thermal and mechanical effects of urbanization on recent heavy rainfall occurrences, and modeling studies also support precipitation enhancement. Urban influences were recognized in other climatological elements, such as number of fog days, relative humidity, and wind circulation.

关键词： Heat island Cool island Heavy rainfall Fog Humidity Sea breeze

Removing fences from sweep motion videos using global 3D reconstruction and fence-aware light field rendering

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Computational Visual Media 2019年第1期5卷 21-32页

作者： Chanya Lueangwattana Shohei Mori hideo Saito Department of Science and Technology Keio University Institute of Computer Graphics and Vision Graz University of Technology

Diminishing the appearance of a fence in an image is a challenging research area due to the characteristics of fences(thinness, lack of texture, etc.) and the need for occluded background restoration. In this paper, we describe a fence removal method for an image sequence captured by a user making a sweep motion, in which occluded background is potentially observed. To make use of geometric and appearance information such as consecutive images, we use two well-known approaches: structure from motion and light field rendering. Results using real image sequences show that our method can stably segment fences and preserve background details for various fence and background combinations. A new video without the fence, with frame coherence, can be successfully provided.

关键词： video fence video repair diminished reality(DR) structure from motion(SfM) light field rendering(LFR)

Effects of uniaxial compressive strain on the electronic- transport properties of zigzag carbon nanotubes

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Nano Research 2016年第5期9卷 1267-1275页

作者： Masato Ohnishi Ken Suzuki hideo Miura Fracture and Reliability Research Institute Graduate School of Engineering Tohoku University Sendai 980-8579 Japan

Recently, substantial attention has been paid to the strain sensitivity of the carbon nanotubes＇（CNTs＇） electronic properties. In this study, the relationships between the geometric structures and electronic states of zigzag CNTs under uniaxial compressive strain were investigated. We found that different factors dominate the electronic states of zigzag CNTs depending on the strain regions： the initial stage of the strain loading, which lasts until column-buckling deformation begins, and the strain regions corresponding to column- and shell-buckling deformations. Because shell-buckling deformation significantly increases the re-orbital angle, the angle between the π orbital axis vectors of adjacent atoms, strong localization of the density of states （LDOS） occurs in the buckled area. We also analyzed the current able to pass through deformed CNTs using a tight-binding-based Green＇s function approach and determined that the current can be significantly suppressed by applying uniaxial compressive strain. Our method of predicting the electronic state of a deformed CNT based on the π-orbital angle is expected to be useful for predicting the electronic properties of CNT-based electronic devices and sensors.

关键词： carbon nanotube strain buckling deformation Green's function method electronic-transport property

PHOTOCHROMISM AND LUMINESCENCE OF DOPANT CHROMOPHORES THROUGH TWO-PHOTON IONIZATION IN POLYMER FILMS

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Chinese Journal of Polymer Science 2001年第2期19卷 129-134页

作者： Masahide Yamamoto hideo Ohkita Shinzaburo Ito Faculty of Science and Engineering Ritsumeikan University Kusatsu Shiga 525-8577 JapanDepartment of Polymer Chemistry Graduate School of Engineering Kyoto University Sakyo Kyoto 606-8501 JapanDepartment of Polymer Chemistry Graduate School of Engineering Kyoto University Sakyo Kyoto 606-8501 Japan

Two-photon ionization and recombination processes of an aromatic chromophore doped in polymer films werestudied and the features of these processes were discussed in relation to photofunctional polymers, An aromatic moleculehaving low ionization potential, e.g., N,N,N',N'-tetramethyl-p-phenylene diamine doped in poly(methyl methacrylate)(PMMA) film was easily photoionized by intense laser ligh excitation, giving a colored radical cation (photochromism) anda trapped electron in PMMA matrix. As a reversed process, the radical cation recombined with the trapped electron, showingdiscoloration and emitting luminescence, either isothermal luminescence (ITL), or thermoluminescence (TL). In this report,ITL and TL through the charge recombination process were studied and the luminescence was suggested as a mean of the read-out of photorecording.

关键词： Two-photon ionization Photochromism Charge recombination Trapped electron Isothermal luminescence Thermoluminescence Aromatic amines Poly(methyl methacrylate)

Existence and Asymptotic Behavior of Radially Symmetric Solutions to a Semilinear Hyperbolic System in Odd Space Dimensions

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Chinese Annals of Mathematics,Series B 2006年第5期27卷 507-538页

作者： hideo KUBO Kji KUBOTA Department of Mathematics Osaka University Machikaneyama 1-1ToyonakaOsaka 560-0043Japan Department of Mathematics Hokkaido University Sapporo 060-0810Japan

This paper is concerned with a class of semilinear hyperbolic systems in odd space dimensions. Our main aim is to prove the existence of a small amplitude solution which is asymptotic to the free solution as t →-∞ in the energy norm, and to show it has a free profile as t →＋∞. Our approach is based on the work of [11]. Namely we use a weighted L^∞ norm to get suitable a priori estimates. This can be done by restricting our attention to radially symmetric solutions. Corresponding initial value problem is also considered in an analogous framework. Besides, we give an extended result of [14] for three space dimensional case in Section 5, which is prepared independently of the other parts of the paper.

关键词： Semilinear wave equations Asymptotic behavior Radially symmetric solution

Characteristic and Mechanism of Pressure Fluctuation Caused by Self-Induced Oscillation of Supersonic Impinging Jet

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Journal of Thermal Science 2013年第2期22卷 123-127页

作者： Tsuyoshi Yasunobu Yumiko Otobe hideo Kashimura Department of Control & Information Systems Engineering Kitakyushu College of Technology

When the underexpanded supersonic jet impinges on the obstacle, it is well known that the self-induced flow os- cillation occurs. This oscillation depends on the pressure ratio in the flowfield, the position of an obstacle and is related with the noise problems of aeronautical and other industrial engineering. The characteristic and the mechanism of self-induced flow oscillation, have to be clarified to control various noise problems. But, it seems that the characteristics of the oscillated flowfield and the mechanism of an oscillation have to be more cleared to control the oscillation. This paper aims to clarify the effect of the pressure ratio and the obstacle position and the mechanism of self-induced flow oscillation by numerical analysis and experiment, when the underexpanded su- personic jet impinges on the cylindrical body. From the result of this study, it is clear that occurrence of the self-induced flow osciUation depends on the pressure balance in the flowfield.

关键词： Supersonic Jet Mach Disk Barrel Shock Flow Oscillation Flow Visualization Numerical Analysis