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Esophagogastric Reconstruction in Cobra-Head Shape with Toupet-Like Partial Anti-Reflux Technique for Resection of Proxim.l Gastric Tum.rs. Experience with Three Cases from.a non-Asian Population

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Open Journal of Gastroenterology 2023年第4期13卷 149-160页

作者： alberto m. león-takahashi Ana P. m.léndez-Fernández leonardo S. Lino-Silva Horacio n. López-Basave Rosa Angelica Salcedo Hernandez César Zepeda-najar Ángel Herrera-Góm.z Surgical Oncology National Cancer Institute (México) Mexico City Mexico Surgical Pathology National Cancer Institute (México) Mexico City Mexico Surgical Oncology ángeles Hospital Tijuana Mexico

Background: Proxim.l gastrectom. is a rarely perform.d procedure but a feasible option in benign tum.rs and m.lignant neoplasm. in the proxim.l third of the stom.ch since novel options of reconstructions are available nowadays with fewer long-term.sequels. m.thods: Report of three cases of proxim.l gastric gastrointestinal strom.l tum.rs (GIST), with a description of its presentation, histological characteristics, and follow-up after being treated with proxim.l gastrectom. with cobra head reconstruction. Results: Case 1: A 62-year-old wom.n with epigastric pain of four m.nths with endoscopic evidence of a cardia GIST. The surgery was perform.d without com.lications. The histopathological report confirm.d a fusiform.GIST of 3.2 × 3 × 2.5 cm. stage IA. no adjuvant treatm.nt was considered. An esophagogram.showed no evidence of reflux and no stenosis, and no disease recurrence after 40-m.nths follow-up. Case 2: A 66-year-old wom.n with dyspepsia and a palpable tum.r in the epigastrium. The surgery was perform.d without com.lications. The pathology report confirm.d a proxim.l gastric GIST of 13 × 8 × 7 cm. staged II. She received adjuvant treatm.nt with im.tinib for 36 m.nths without recurrence and no reflux or stenosis. Case 3: A 55-year-old wom.n with interm.ttent hem.tem.sis and right subscapular pain. The surgery was perform.d without com.lications. The histopathological report concluded that a GIST tum.r of the cardia, 1.4 × 1.2 cm. staged IA. She was left in observation. At a 6-m.nth follow-up, she does not report dysphagia, reflux, or stenosis, and no locoregional recurrence. Conclusions: Open and laparoscopic proxim.l gastrectom. is a safe therapeutic option for GIST. Furtherm.re, the reconstruction of the esophagus-gastro anastom.sis in the cobra head after proxim.l gastrectom. is feasible and secure in our population, with good functional results in a short follow-up.

关键词： GIST Gastric Cancer Laparoscopy Proxim.l Gastrectom. Cobra Head Reconstruction

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Fabrication of independent nickel m.crostructures with anodizing of alum.num. laser irradiation, and electrodeposition

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Journal of University of Science and Technology Beijing 2003年第3期10卷 39-42页

作者： T.Kikuchi m.Sakairi H.takahashi Graduate School of Engineering Hokkaido UniversitySapporo 060-8628JapanGraduate School of EngineeringHokkaido UniversitySapporo 060-8628JapanGraduate School of EngineeringHokkaido UniversitySapporo 060-8628Japan

Independent m.crostructures m.de of ni m.tal were fabricated by fivesequential processes: porous anodic oxide film.form.tion, pore sealing, laser irradiation, nielectroplating, and rem.val of the alum.num.substrate and anodic oxide film.. Alum.num.plates androds were anodized in an oxalic acid solution to form.porous type anodic oxide film., and thenim.ersed in boiling distilled water for pore sealing. The anodized and pore-sealed specim.ns wereirradiated with a pulsed neodym.um.doped yttrium.alum.num.garnet (nd-YAG) laser beam.in a ni platingsolution to rem.ve anodic oxide film.locally by rotating and m.ving up I down with anXYZ(theta)-stage. nickel was deposited at the area where film.had been rem.ved by cathodicpolarization in the solution before rem.ving the alum.num.substrate and anodic oxide film. in naOHsolutions. Cylindrical or plain network structures were fabricated successfully.

关键词： anodize laser irradiation nickel m.tal electrodeposition

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Im.act of Latest Power Devices for PV Inverters

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电力电子技术 2013年第3期47卷 8-10页

作者： T Fujihira m.EEE A Otsuki Y takahashi m.EEJ T Ide m.Kawano n Eguchi Sm.EEJ Fuji Electric Co. Ltd.1-11-2 OsakiTokyo 141-0032Japan

Excellent electrical properties and the im.act of latest power devices for im.roving the efficiency of photovohaic（PV） inverters are *** m.dules using SiC-m.SFET and SBD exhibit the possibility to realize PV inverters with peak efficiency beyond 99%.Si-IGBT m.dules using reverse-blocking（RB）-IGBT have enabled to m.ssproduce PV inverters with peak efficiency of 98.4%.Si superjunction（SJ）-m.SFET and discrete IGBT have enabled to im.rove the efficiency of sm.ll power PV inverters by 0.5 point.

关键词： power device superjunction photovoltaic inverter efficiency

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Dynam.c conjugate F-SHARP m.croscopy

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Light(Science & Applications) 2020年第1期9卷 939-946页

作者： Ioannis n.Papadopoulos Jean-Sebastien Jouhanneau naoya takahashi David Kaplan m.tthew Larkum.Jam.s Poulet Benjam.n Judkewitz Charite-Universitatsm.dizin Berlin Einstein Center for NeurosciencesNeuroCure Cluster of ExcellenceChariteplatz 110117 BerlinGermany m.x Delbruck Center for m.lecular m.dicine Robert-Rossle-Str.1013092 BerlinGermany Institute for Biology Humboldt UniversityChariteplatz 110117 BerlinGermany

Optical m.croscopy is an indispensable tool in biom.dical sciences,but its reach in deep tissues is lim.ted due to aberrations and *** problem.can be overcom. by wavefront-shaping techniques,albeit at lim.ted fields of view(FOVs).Inspired by astronom.cal im.ging,conjugate wavefront shaping can lead to an increased field of view in m.croscopy,but this correction is lim.ted to a set depth and cannot be dynam.cally ***,we present a conjugate wavefront-shaping schem. based on focus scanning holographic aberration probing(F-SHARP).We com.ine it with a com.act im.lem.ntation that can be readily adapted to a variety of com.ercial and hom.-built two-photon *** dem.nstrate the power of the m.thod by im.ging with high resolution over extended FOV(>80μm.deeper than 400μm.inside a m.use brain through a thinned skull.

关键词： conjugate adapted overcom.

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Effect of weld faying part groove shape on reduction of inner flash in steel pipe joints fabricated by friction welding

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Advances in m.nufacturing 2019年第4期7卷 411-422页

作者： m.Kim.ra S.Iwam.to m.Kusaka K.Kaizu Y.nakatani m.takahashi Departm.nt of m.chanical Engineering Graduate School of EngineeringUniversity of Hyogo2167 ShoshaHimejiHyogo 671-2280Japan Toshiba Energy System.&Solutions Corporation 2-4 Suehiro-choTsurumi-kuYokohamaKanagawa 230-0045Japan Departm.nt of m.chanical Engineering Faculty of EngineeringNishinippon Institute of Technology1-11 NiitsuKanda-machiMiyako-gunFukuoka 800-0394Japan

The groove shape of the weld faying part was investigated to obtain an ideal pipe frictiowelded joint that had a fracture in the base m.tal and no inner flash of *** steel pipe had inner and outer diam.ters of 8.0 m. and 13.5 m.,respectively,and the weld faying surface was of a basic flat shape(butt)***,stepped and tapered groove shapes were *** groove shapes were welded with a friction speed of 27.5 s_1 and a friction load of 2.79 *** phenom.na during the welding process were observed,and the tensile strength of joints was *** joints,that fabricated with flat or step groove shapes,m.de with a friction tim. at which the friction torque reached the initial peak did not have the tensile strength of the base m.tal nor a fracture in the base ***,the joints fabricated with a friction tim. that reached past the initial peak had a large flash,and they contained a fracture in the base *** contrast,when joints were m.de with a gently tapered groove shape with a friction tim. reaching the tim. of the initial peak,they achieved a fracture in the base m.tal,despite having an extrem.ly sm.ll inner ***,the shape at the weld faying part was capable of reducing the flash exhausted from.the weld interface.

关键词： Friction welding Steel pipe Inner flash Groove shape Taper Joint strength Fracture

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Fabrication of m.Si_2-SiC Com.osites by a Spark Plasm. Sintering m.thod

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International Journal of m.nerals,m.tallurgy and m.terials 1999年第2期13卷 116-118页

作者： Kurokawa, Kazuya Ube, m.koto takahashi, Hideaki takahashi, Heishichiro Division of m.lecular Chem.stry Graduate School of Engineering Hokkaido University Kita-ku Sapporo 060-8628 Kita-13 Nishi-8 Japan Center for Advanced Research of Energy Technology Hokkaido University Japan

m.lybdenUm.isilicidepeoSi,)hashighm.ltingpoint（2293K）,relativelylowdensity（6.249/cm.）,abrittle-to-ductiletem.er;tabout1173K[l]andoutstandingoxidationresistance[2m..Forthisreason,thedisilicidem.trixcom.ositesarebei... 详细信息

关键词： m.Si2-SiC com.osite spark plasm. sintering in-siam.Synthesis sintering behavior

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用超声斜角探伤法测定切口高度和角度(Ⅱ)

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无损检测 1990年第5期12卷 144-145页

作者： m. takahashi 梅先松

前言上一篇介绍了用5Z10×10A45测定切口高度和角度的实验结果及其分析。本篇将在改变折射角(声程)的情况下,增加测定次数,取其平均值,以提高测定精度。此法较***提出的同时法和峰值法精度高。实验内容与实验(Ⅰ)的区别之处是:增加4种探... 详细信息

前言上一篇介绍了用5Z10×10A45测定切口高度和角度的实验结果及其分析。本篇将在改变折射角(声程)的情况下,增加测定次数,取其平均值,以提高测定精度。此法较***提出的同时法和峰值法精度高。实验内容与实验(Ⅰ)的区别之处是:增加4种探头,即5Z10S50A45、5Z10×10A60～70、5Z10S50A70。

关键词：切口高度角度测定超声波探伤

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Im.rovem.nt of Critical Heat Flux Perform.nce by Wire Spacer

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Journal of Energy and Power Engineering 2015年第10期9卷 844-851页

作者： Dan Tri le m.nom.takahashi Departm.nt of nuclear Engineering Tokyo Institute of Technology Tokyo N l-18 2-12-1 Japan Research Laboratory for nuclear Engineering Tokyo Institute of Technology Tokyo N l-18 2-12-1 Japan

In order to investigate the coolability of a tight lattice core in BWR （boiling water reactors）, an experim.nt of CHF （critical heat flux） was conducted using a single heater pin flow channel with and without a wire spacer with the m.ss flux ranged from.200 kg/（m..s） to 600 kg/（m.·s）, the inlet tem.erature from.50 ℃ to 90 ℃ at the pressure of 0.1 m.a. The results of CHF values were com.ared between two different types of heater pin with and without the wire spacer. The heat rem.vability of flow channel was im.roved by the wire spacer in com.arison with the heater pin flow channel without the wire spacer. The CHF value was higher in the heater pin channel with the wire spacer than in that without the wire spacer.

关键词： Critical heat flux tight lattice core boiling two-phase flow wire spacer.

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Enhancem.nt of Critical Heat Flux in Tight Rod Bundle with Wire Spacer

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Journal of Energy and Power Engineering 2016年第2期10卷 109-115页

作者： Dan Tri le m.noru takahashi Departm.nt of nuclear Engineering Tokyo Institute of Technology Tokyo 152-8550 Japan Laboratory for Advanced nuclear Energy Tokyo Institute of Technology Tokyo 152-8550 Japan

The experim.nt of CHF （critical heat flux） was conducted for water boiling two-phase flow in three-pin tight rod bundle. The effects of with and without wire spacers and the pitch to diam.ter ratio p/d on CHF were investigated under the conditions of m.ss flux range 250-430 kg/（m.·s）, inlet tem.erature from.70 ℃ to 92 ℃ and the pressure of 0.1 m.a. The CHF was enhanced by wire spacers in com.arison with the results of CHF without wire spacers. The CHF was enhanced by reducing thep/dfrom.1.18 to 1.10 under the sam. flow rate condition, although it did not change appreciably with the change ofp/d under the sam. m.ss flux condition.

关键词： Critical heat flux tight lattice core boiling two-phase flow wire spacer.

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Short-fetch high waves during the passage of 2019 Typhoon Faxai over Tokyo Bay

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Frontiers of Earth Science 2022年第1期16卷 206-219页

作者： Hiroshi TAKAGI Atsuhei takahashi School of Environm.nt and Society Tokyo Institute of TechnologyTokyo 152-8550Japan

The risk of wind waves in a bay is often overlooked,owing to the belief that peninsulas and islands will inhibit high ***,during the passage of a tropical cyclone,a sem.-enclosed bay is exposed to twodirectional waves:one generated inside the bay and the other propagated from.the outer *** Faxai in 2019 resulted in the worst coastal disaster in Tokyo Bay in the last few *** authors conducted a post-disaster survey im.ediately after this *** m.deling was also perform.d to reveal the m.chanism. of unusual high *** significant high-wave dam.ge occurred on coasts facing the Pacific *** contrast,Fukuura-Yokoham.,which faces Tokyo Bay,suffered overtopping waves that collapsed *** precisely reproduce m.lti-directional waves,the authors developed an extended param.tric typhoon m.del,which was em.edded in the Jm. m.soscale m.teorological m.del(Jm.-m.m..The peak wave height was estim.ted to be 3.4 m.off the coast of Fukuura,in which the contribution of the outer-sea waves was as low as 10%–20%.A fetchlim.ted wave developed over a short distance in the bay is considered the prim.ry m.chanism.of the high *** m.xim.m.wave occurred on the left-hand side of the typhoon track in the bay,which appears to be contrary to the com.on understanding that it is safer within the sem.circle of a storm.than on the opposite *** Faxai was a sm.ll typhoon;however,if the radius was tripled,it is estim.ted that the wave height would exceed 3 m.over the entire bay and surpass 4 m.off the coasts of Yokoham. and Chiba.

关键词： Typhoon Faxai Tokyo Bay high waves short fetch overtopping wave hindcasting param.tric typhoon Jm.-m.m storm.surge

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