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Small-for-size syndrome in liver transplantation:Definition,pathophysiology and management

Hepatobiliary & Pancreatic Diseases International 2020年第4期19卷 334-341页

作者： yuichi masuda Kazuki Yoshizawa Yasunari Ohno Atsuyoshi Mita Akira Shimizu Yuji Soejima Division of Gastroenterological Hepato-Biliary-PancreaticTransplantation and Pediatric SurgeryDepartment of SurgeryShinshu University School of Medicine3-1-1 AsahiMatsumotoNaganoJapan

Background:Since the first success in an adult patient,living donor liver transplantation(LDLT)has become an universally used ***-for-size syndrome(SFSS)is a well-known complication after partial LT,especially in cases of adult-to-adult *** definition of SFSS slightly varies among transplant *** use of a partial liver graft has risks of SFSS *** portal vein(PV)hypertension and PV hyper-perfusion after LT were identified as the main ***,various approaches were explored to modulate PV flow and decrease PV pressure in order to alleviate this ***,the definition,clinical symptoms,pathophysiology,basic research,as well as preventive and treatment strategies for SFSS are reviewed based on an extensive review of the literature and on our own *** sources:The articles were collected through PubMed using search terms“liver transplantation”,“living donor liver transplantation”,“living liver donation”,“partial graft”,“small-for-size graft”,“small-forsize syndrome”,“graft volume”,“remnant liver”,“standard liver volume”,“graft to recipient body weight ratio”,“sarcopenia”,“porcine”,“swine”,and“rat”.English publications published before March 31,2020 were included in this ***:Many transplant surgeons performed PV flow modulation,including portocaval shunt,splenic artery ligation and *** these techniques,patient outcome has been improved even when using a"small"*** factors,such as preoperative recipients’nutritional and skeletal muscle status,graft congestion,and donor factors,were also identified as risk factors which all have been addressed using various ***:The surgical approach controlling PV flow and pressure could help to prevent SFSS especially in severely ill *** the absence of efficacious medications to resolve SFSS,conservative treatments,including aggressive fluid balance correction for massive ascites,anti-microbiological therapy t

关键词： Liver transplantation Living donor liver transplantation Small-for-size graft Small-for-size syndrome

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固体蛋白体系中快速/超快魔角旋转下的13C-13C相关

固体蛋白体系中快速/超快魔角旋转下的13C-13C相关

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第十七届全国波谱学学术会议

作者：胡炳文陈群沈明 Olivier Lafon Julien Trébosc P.Corcosa J.P.Amoureux yuichi masuda K.Takegoshi 物理系&上海市磁共振重点实验室华东师范大学法国里尔北方大学药学院 Tohoku University

＜正＞目前为止,绝大多数的固体蛋白13C-13C结构的分析都借助于13C全标记蛋白。为了增加信噪比和分辨率,蛋白研究经常在高场谱仪（＞600MHz）下进行。此时,为了消除边带,高转速或超高转速的使用就很有必要。此外,使用高转速或超高转速,...

＜正＞目前为止,绝大多数的固体蛋白13C-13C结构的分析都借助于13C全标记蛋白。为了增加信噪比和分辨率,蛋白研究经常在高场谱仪（＞600MHz）下进行。此时,为了消除边带,高转速或超高转速的使用就很有必要。此外,使用高转速或超高转速,可以减少标记蛋白的

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Guidance, navigation, and control of Hayabusa2 touchdown operations

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Astrodynamics 2020年第4期4卷 393-409页

作者： Fuyuto Terui Naoko Ogawa Go Ono Seiji Yasuda Tetsuya masuda Kota Matsushima Takanao Saiki yuichi Tsuda Institute of Space and A stronautical Science Japan A erospace Exploration AgencyKanagawa 252-5210Japan The 3nd Space Technology Department Space System DirisionNEC CorporationTokyo 183-8501Japan

Hayabusa2 is a Japanese sample return mission from the asteroid *** Hayabusa2 spacecraft was launched on 3 December 2014 and arrived at Ryugu on 27 June *** stayed there until December 2019 for in situ observation and soil sample collection,and will return to the Earth in November or December *** the stay,the spacecraft performed the first touchdown operation on 22 February 2019 and the second touchdown on 11 July 2019,which were both completed *** the surface of Ryugu is rough and covered with boulders,it was not easy to find target areas for *** were several technical challenges to overcome,including demanding guidance,navigation,and control accuracy,to realize the touchdown *** this paper,strategies and technical details of the guidance,navigation,and control systems are *** flight results prove that the performance of the systems was satisfactory and largely contributed to the success of the operation.

关键词： small body exploration touchdown astrodynamics guidance navigation control

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Grain boundary functions as a spin valve

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National Science Review 2020年第7期7卷 1148-1149页

作者： yuichi Ikuhara Institute of Engineering Innovation The University of Tokyo Nanostructure Research Laboratory Japan Fine Ceramics Center

In practical applications, most metals and ceramic materials are used in polycrystalline form, composed of numbers of tiny single crystals called grains. The atomic arrangements at the interfaces between these grains, namely the grain boundaries(GBs), are very different from those inside the bulk part. The GB atomic structures are rather complicated and disordered, dependent on the orientations

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Visible light responsive photocatalysts developed by substitution with metal cations aiming at artificial photosynthesis

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Frontiers in Energy 2021年第3期15卷 568-576页

作者： yuichi YAMAGUCHI Akihiko KUDO Department of Applied Chemistry Faculty of ScienceTokyo University of ScienceTokyo 162-8601Japan

To solve resource,energy,and environmental issues,development of sustainable clean energy system is strongly *** recent years,hydrogen has been paid much attention to as a clean *** hydrogen production by water splitting using a photocatalyst as artificial photosynthesis is a promising method to solve these *** utilization of visible light comprised of solar light is essential for practical *** strategies,i.e.,doping,control of valence band,and formation of solid solution are often utilized as the useful methods to develop visible light responsive *** minireview introduces the recent work on visible-light-driven photocatalysts developed by substitution with metal cations of those strategies.

关键词： visible light responsive photocatalyst water splitting artificial photosynthesis:metal ion substitution

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Rate of hexabromocyclododecane decomposition and production of brominated polycyclic aromatic hydrocarbons during combustion in a pilot-scale incinerator

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Journal of Environmental Sciences 2017年第11期29卷 91-96页

作者： yuichi Miyake Masahiro Tokumura Qi Wang Takashi Amagai yuichi Horii University of Shizuoka 52-1 Yada Suruga-ku Shizuoka 422-8526 Japan Center for Environmental Science in Saitama 914 Kamitanadare Kazo Saitama 34F-0115 Japan

Here, we examined the incineration of extruded polystyrene containing hexabromocyclododecane（HBCD） in a pilot-scale incinerator under various combustion temperatures（800–950℃） and flue gas residence times（2–8 sec）. Rates of HBCD decomposition ranged from 99.996%（800℃, 2 sec） to 99.9999%（950℃, 8 sec）; the decomposition of HBCD, except during the initial stage of combustion（flue gas residence time 〈 2 sec）, followed a pseudo-first-order kinetics model. An Arrhenius plot revealed that the activation energy and frequency factor of the decomposition of HBCD by combustion were 14.2 kJ/mol and 1.69 sec^（-1）,respectively. During combustion, 11 brominated polycyclic aromatic hydrocarbons（BrPAHs）were detected as unintentional by-products. Of the 11 BrPAHs detected, 2-bromoanthracene and 1-bromopyrene were detected at the highest concentrations. The mutagenic and carcinogenic BrPAHs 1,5-dibromoanthracene and 1-bromopyrene were most frequently detected in the flue gases analyzed. The total concentration of BrPAHs exponentially increased（range,87.8–2,040,000 ng/m^3） with increasing flue gas residence time. Results from a qualitative analysis using gas chromatography/high-resolution mass spectrometry suggest that bromofluorene and bromopyrene（or fluoranthene） congeners were also produced during the combustion.

关键词： Brominated polycyclic aromatic hydrocarbons Flame retardant Hexabromocyclododecane(HBCD) Incinerator Persistent organic pollutants(POPs)

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Growth promotion of interspecific hybrid embryos between Cucumis anguria and Melon(C. melo) by fruit heating

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Horticultural Plant Journal 2022年第2期8卷 215-220页

作者： yuichi Matsumoto Mako Tsunamoto Center for Education and Research in Agricultural Innovation Faculty of AgricultureSaga UniversitySaga 8470021Japan

Wild species of the genus Cucumis, such as C. anguria, are resistant to various melon(C. melo) diseases such as Fusarium wilt race 1.2 and are anticipated as genetic resources of melon. However, in the interspecific crosses between C. anguria and melon, the abortion of the embryos was observed in the early growth stage and could not be regenerated even when cultured. Therefore, for embryo rescue, it is necessary to promote embryo growth during abortion occurrence. This study investigated the effects of fruit heating on embryo growth in interspecific hybrids of C. anguria and melon. In the heating device, the minimum night temperature around the fruit was maintained above 21.5 °C. The ovule grain area of C. anguria × MR-1 with fruit heating was significantly enlarged compared to that without fruit-heating. It was also significantly enlarged compared with the ovule grain area of C. anguria self-pollination. Although, in C. anguria × MR-1 without fruit-heating, no embryo was observed until 10 days after pollination(DAP), and pre-embryos were observed at 13 DAP. Conversely, in C. anguria × MR-1 with fruit-heating, pre-embryos were even observed at 10 DAP. These results suggest that the possibility of embryo or ovule culture regeneration has increased due to embryo growth promotion.

关键词： Cucumis anguria L. Interspecific cross Melon Night temperature Ovule area

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Three-dimensional crystal defect imaging by STEM depth sectioning

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Chinese Physics B 2024年第8期33卷 2-7页

作者： Ryo Ishikawa Naoya Shibata yuichi Ikuhara Institute of Engineering Innovation The University of TokyoBunkyoTokyo 113-8656Japan

One of the major innovations awaiting in electron microscopy is full three-dimensional imaging at atomic *** the success of aberration correction to deep sub-angstrom lateral resolution,spatial resolution in depth is still far from atomic *** scanning transmission electron microscopy(STEM),this poor depth resolution is due to the limitation of the illumination *** overcome this physical limitation,it is essential to implement a next-generation aberration corrector in STEM that can significantly improve the depth *** review discusses the capability of depth sectioning for three-dimensional imaging combined with large-angle illumination ***,the statistical analysis approach remarkably improves the depth resolution,making it possible to achieve three-dimensional atomic resolution imaging at oxide *** will also discuss the future prospects of three-dimensional imaging at atomic resolution by STEM depth sectioning.

关键词： atomic-resolution STEM STEM depth sectioning depth resolution dopants surface topography

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Analytical study of performance evaluation for seismic retrofitting of reinforced concrete building using 3D dynamic nonlinear finite element analysis

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Earthquake Engineering and Engineering Vibration 2011年第2期10卷 291-302页

作者： yuichi Sato Shinichi Kajihara Yoshio Kaneko Department of Architecture and Architectural Engineering Kyoto University Technology Center Taisei Corporation

This paper presents three-dimensional finite element （FE） analyses of an all-frame model of a three-story reinforced concrete （RC） building damaged in the 1999 Taiwan Chi-Chi Earthquake. Non-structural brick walls of the building acted as a seismic resistant element although their contributions were neglected in the design. Hence, the entire structure of a typical frame was modeled and static and dynamic nonlinear analyses were conducted to evaluate the contributions of the brick walls. However, the results of the analyses were considerably overestimated due to coarse mesh discretizations, which were unavoidable due to limited computer resources. This study corrects the overestimations by modifying （1） the tensile strengths and （2） shear stiffness reduction factors of concrete and brick. The results indicate that brick walls improve frame strength although shear failures are caused in columns shortened by spandrel walls. Then, the effectiveness of three types of seismic retrofits is evaluated. The maximum drift of the first floor is reduced by 89.3%, 94.8%, and 27.5% by Steel-confined, FuI1-RC, and Full-brick models, respectively. Finally, feasibility analyses of models with soils were conducted. The analyses indicated that the soils elongate the natural period of building models although no significant differences were observed.

关键词： reinforced concrete 1999 Taiwan Chi-Chi earthquake nonlinear finite element analysis seismic retrofit brick wall

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QUADRANT ANALYSIS OF BUBBLE INDUCED VELOCITY FLUCTUATIONS IN A TRANSITIONAL BOUNDARY LAYER

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Journal of Hydrodynamics 2009年第1期21卷 93-99页

作者： HUANG Jian MURAI yuichi YAMAMOTO Fujio Graduate School of Engineering Fiber Amenity Engineering Course University of Fukui Bunkyo 3-9-1 Fukui 910-8507 Japan Division of Energy and Environment System School of Engineering Hokkaido University Sapporo Japan Graduate School of Engineering University of Fukui Bunkyo 3-9-1 Fukui 910-8507 Japan

Our previous study showed that the frictional drag decreases with increasing void fraction at Re〉1300, while it increases at Re 〈 1000. Decomposition of the Reynolds shear stress also implied that bubbles induce isotropy of turbulence. In order to confirm our previous analysis and to further investigate flow fields in the vicinity of bubbles, we analyze velocity fluctuations on the quadrant space in the streamwise and transverse directions （u′-v′ plane）. Here, we focus on two specific Reynolds numbers （at Re≈900 and ≈1410, which are close to the laminar-to-turbulent transition regime） and discuss bubble effects on sweep （u′〉 0, v′〈 0 ） and ejection （u′〈 0, v′〉 0） events as a function of the Reynolds number. We also illustrate velocity fluctuations in the vicinity of an individual bubble and a swarm of bubbles on the u′- v′ coordinates. The results show that a bubble swarm suppresses the velocity fluctuations at Re≈1410.

关键词： bubbly channel flow Particle Tracking Velocimetry (PTV) quadrant analysis velocity fluctuation boundary layer,laminar-to-turbulent transition

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