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Congenital tracheoesophageal fistula successfully diagnosed by CT esophagography

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World Journal of Gastroenterology 2006年第9期12卷 1476-1478页

作者： Koichi Nagata Yoshito Kamio Tamaki Ichikawa Mitsutaka Kadokura akihiko Kitami Shungo Endo Haruhiro inoue Shin-Ei Kudo Digestive Disease Center Showa University Northern Yokohama Hospital 35-1 Chigasaki-chuoTsuzuki-kuYokohama 224-8503 Japan Respiratory Disease Center Showa University Northern Yokohama Hospital 35-1 Chigasaki-chuoTsuzuki-kuYokohama 224-8503Japan Department of Radiology Showa University Northern Yokohama Hospital 35-1 Chigasaki-chuoTsuzuki-kuYokohama 224-8503Japan Digestive Disease Center Showa University Northern Yokohama Hospital 35-1 Chigasaki-chuoTsuzuki-kuYokohama 224-8503Japan

Tracheoesophageal fistula （TEF） or bronchoesophageal fistula may be congenital, inflammatory, neoplastic, or secondary to trauma. Congenital TEF or bronchoesophageal fistula is usually associated with esophageal atresia and is readily diagnosed in infancy. But if it is not associated with esophageal atresia, it may persist until adulthood. Some theories have been proposed to explain this delay in diagnosis. We present a case of a 70-year-old man with congenital TEF. The TEF was successfully diagnosed by multidetector-row CT esophagography.

关键词： Tracheoesophageal fistula Congenital Virtual endoscopy Computed tomography Esophagography

Interfacial reaction in squeeze cast SiC_w/AZ91 composites with different binders

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中国有色金属学会会刊：英文版 2001年第2期11卷 217-221页

作者：郑明毅吴昆姚忠凯 Tatsuo Sato Hiroyasu Tezuka akihiko Kamio School of Materials Science and Engineering Harbin Institute of Technology Department of Metallurgical Engineering Tokyo Institute of Technology Tokyo 152 Japan

The whisker/matrix interfaces in squeeze cast SiC w/AZ91 composites with different binders (silica binder, acid aluminum phosphate binder and without binder), were studied by transmission electron microscopy (TEM) and high resolution electron microscopy (HREM). The SiC w/AZ91 interface is very clean in the composites with no binders. For the composites with acid aluminum phosphate binders or silica binders, there exists fine discrete interfacial reaction products MgO at the interface, and a definite orientation relationship between MgO and SiC w. The interfacial reaction products MgO is unevenly distributed at different parts of the composite ingot with silica binder, and mainly distributed to the interface at the side part of the composite cylinder. While in the SiC w/AZ91 composite with acid aluminum phosphate binder, MgO particles are distributed evenly at the interface in almost all the parts of the composite ingot. [

关键词： SiC whisker magnesium alloy composites binder interfacial reaction

Generating soil salinity, soil moisture, soil pH from satellite imagery and its analysis

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Information Processing in Agriculture 2020年第2期7卷 294-306页

作者： Mochamad Firman Ghazali Ketut Wikantika Agung Budi Harto akihiko Kondoh Center for Remote Sensing Bandung Institute of Technology(CRS-ITB)BandungIndonesia Remote Sensing and GIS Research Group Faculty of Earth Science and TechnologyBandung Institute of TechnologyBandungIndonesia ForMIND Institute Indonesia Center for Environmental Remote Sensing(CeRES) Chiba UniversityJapan Department of Geodesy and Geomatics Engineering Faculty of EngineeringUniversity of LampungIndonesia

In an agricultural field,the water content and salt content are defined as soil moisture and soil salinity and have to be estimated *** changing of these two factors can be assessed using remote sensing *** study was conducted by analysing the Landsat 8 satellite images,soil data of field surveys,laboratory analyses and statistical *** properties such as soil moisture and soil salinity were estimated using soil moisture index(SMI)and soil salinity index(SSI),*** research combined and integrated the soil data from survey and laboratory with Landsat 8 satellite images to build two multiple regression equations model named the soil pH Index(SpHI).They are based on bare soil and paddy leaf models as the explanatory factors of soil moisture and soil salinity *** the computation processes were replicated three times using three different dates of Landsat 8 satellite images to produce the multi-temporal *** moisture increased after 30 days,while the salt content was only trace *** proposed models detected 4.49–7.59 of soil pH,4.66 in bare soil model and 6.62 in paddy leaf *** the planting period,the soil pH in bare soil model decreased to 2.12–6.47 while the paddy leaf model increased to 4.49–7.59 with RMSE 1.40 and PRMSE 24%of *** spatial relationship between soil pH,soil salinity and soil moisture are linear but varied in correlation level from weak,moderate to *** on the bare soil model,the relationship between soil pH and soil moisture shows a weak negative relationship with R28.37%and a strong positive relationship with R281.94%in paddy area and bare soil area respectively,as like as in paddy area based on the paddy leaf model with R2100%.The relationship between soil temperature and soil pH shows a weak negative relationship for all models and a moderate negative relationship of soil salinity and soil pH in bare soil area based on the bare soil model with R234.89%.

关键词： Landsat 8 Soil moisture index Soil salinity index Soil pH Paddy leaf model Bare soil model

Low-Driving-Voltage Optical Modulation Utilizing FWM for High-Speed Transmission Systems

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光学学报 2003年第S1期23卷 562-563页

作者： akihiko Matsuura Toshiya Matsuda Tomoyoshi Kataoka NTT Network Service Systems Laboratories 1-1 Hikarinooka Yokosuka-Shi Kanagawa 239-0847 JapanNTT Network Service Systems Laboratories 1-1 Hikarinooka Yokosuka-Shi Kanagawa 239-0847 JapanNTT Network Service Systems Laboratories 1-1 Hikarinooka Yokosuka-Shi Kanagawa 239-0847 Japan

We propose an optical transmitter with reduced modulator driving voltage. This reduction is achieved through an on-off ratio improvement technique based on FWM. We confirmed the feasibility of the method in a 43-Gbit/... 详细信息

关键词： FWM on in for Low-Driving-Voltage Optical Modulation Utilizing FWM for High-Speed Transmission Systems

Fabrication,nanostructures and electronic properties of nanodiamond-based solar cells

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Progress in Natural Science:Materials International 2010年第1期20卷 38-43页

作者： akihiko NAGATA Takeo OKU Kenji KIKUCHI Atsushi SUZUKI Yasuhiro YAMASAKI Eiji OSAWA Department of Materials Science The University of Shiga Prefecture Orient Chemical industries Co.Ltd. Department of New Business8-1 Sanra-Higashi-MachiNeyagawaOsaka572-8581Japan 3. NanoCarbon Research Institute Ltd.3-15-1 TokidaUedaNagano386-8567Japan

Nanodiamond-based solar cells were fabricated and the photovoltaic properties were ***(C60)and fullerenol(C60(OH)10-12)were used as n-type semiconductors,and diamond nanoparticles and metal phthalocyanine derivative were used as p-type *** nanostructures of the solar cells were investigated by transmission electron microscopy and X-ray diffracometry,and the electronic property was discussed.

关键词： solar cell nanodiamond C60 phthalocyanine

Dynamic skin deformation simulation using musculoskeletal model and soft tissue dynamics

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Computational Visual Media 2017年第1期3卷 49-60页

作者： akihiko Murai Q.Youn Hong Katsu Yamane Jessica K.Hodgins National Institute of Advanced Industrial Science and Technology Tokyo135-0064Japan Carnegie Mellon University USA Disney Research USA

Deformation of skin and muscle is essential for bringing an animated character to life. This deformation is difficult to animate in a realistic fashion using traditional techniques because of the subtlety of the skin deformations that must move appropriately for the character design. In this paper, we present an algorithm that generates natural, dynamic, and detailed skin deformation(movement and jiggle) from joint angle data sequences. The algorithm has two steps: identification of parameters for a quasi-static muscle deformation model, and simulation of skin deformation. In the identification step, we identify the model parameters using a musculoskeletal model and a short sequence of skin deformation data captured via a dense marker set. The simulation step first uses the quasi-static muscle deformation model to obtain the quasi-static muscle shape at each frame of the given motion sequence(slow jump). Dynamic skin deformation is then computed by simulating the passive muscle and soft tissue dynamics modeled as a mass–spring–damper system. Having obtained the model parameters, we can simulate dynamic skin deformations for subjects with similar body types from new motion data. We demonstrate our method by creating skin deformations for muscle co-contraction and external impacts from four different behaviors captured as skeletal motion capture data. Experimental results show that the simulated skin deformations are quantitatively and qualitatively similar to measured actual skin deformations.

关键词： three-dimensional graphics and realism musculoskeletal model quasi-static muscle model dynamic skin deformation

Balloon-occluded retrograde transvenous obliteration for treatment of gastric varices

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World Journal of Hepatology 2021年第6期13卷 650-661页

作者： Nobuo Waguri akihiko Osaki Yusuke Watanabe Department of Gastroenterology and Hepatology Niigata City General HospitalNiigata 950-1197Japan

Rupture of gastric varices(GVs)can be ***-occluded retrograde transvenous obliteration(BRTO),as known as retrograde sclerotherapy,has been widely adopted for treatment of GVs because of its effectiveness,ability to cure,and utility in emergency and prophylactic *** the route of blood flow from GVs to the gastrorenal shunt is important for the successful *** review outlines BRTO indications and contraindications,describes basic BRTO procedures and modifications,compares BRTO with other GVs treatments,and discusses various combination *** BRTO and partial splenic embolization may prevent exacerbation of esophageal varices and shows promise as a treatment option.

关键词： Gastric varices Balloon-occluded retrograde transvenous obliteration Balloon-occluded antegrade transvenous obliteration Partial splenic embolization Transjugular intrahepatic portosystemic shunt Plug-and coil-assisted retrograde transvenous obliteration

High-temperature ultra-strength of dual-phase Re_(0.5)MoNbW(TaC)_(0.5) high-entropy alloy matrix composite

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Journal of Materials Science & Technology 2021年第25期84卷 1-9页

作者： Qinqin Wei Guoqiang Luo RongTu Jian Zhang Qiang Shen Yujie Cui Yunwei Gui akihiko Chiba State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070China Institute for Materials Research Tohoku UniversitySendai980-8577Japan

The dual-phase Re_(0.5)MoNbW(TaC)_(0.5) composite,consisting of refractory body-centered cubic(BCC)highentropy alloy and carbide with many fine eutectic structures,was successfully synthesized by arc *** phase stability,high-temperature mechanical properties and strengthening mechanism of the ascast composite were *** microstructure of the composite remained stable after annealing at 1300℃for 168 *** exhibited remarkably high-temperature strength,yield strength~901 MPa,and true ultimate compressive strength~1186 MPa at 1200℃.The BCC phase and carbide exhibited a semi-coherent interface with good bonding after severe deformation at 1200℃.The dipolar dislocation walls in BCC phase,restricted dynamic interaction between defects in carbide,and the pinning effect of semi-coherent interface offered effective strengthening effects.

关键词： High-entropy alloy Composite Eutectic structure Strength Strengthening mechanism

Study of Cycle Output Improvement by Work-Fluid Including Phase Change Material

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Journal of Thermal Science 2016年第6期25卷 558-563页

作者： Shin-ichi MORITA Kota TANIMURA Yasutaka HAYAMIZU Takanobu YAMADA akihiko HORIBE Naoto HARUKI Toshiaki SETOGUCHI Department of Mechanical Engineering National Institute of TechnologyYonago College Three S Techno Corporation Tottori factory Department of Mechanical Engineering Kitami Institute of Technology Graduate School of Natural Science and Technology Okayama University Department of Advanced Technology Fusion Saga University

This paper deals with the output improvement of heating and cooling cycle by using the work-fluid including phase change *** experimental study is carried out by heat exchange between work-fluid and heat transfer *** work-fluid is flown to a high temperature or a low temperature heat transfer surface from the narrow *** order to increase the amount of the heat transmission,a trace of Diethylether(boiling point 34.8 ℃),as a phase change material(PCM),is added to the *** parameters of the experiment are additive amount of PCM,the rotational speed of the displacer piston and the temperature of heat transfer *** is clarified that the increasing of engine cycle output is brought by the PCM *** effect of PCM addition is evaluated by output ratio which is defined from the experimental cycle output *** requirements for acquiring the increasing effect of output by adding PCM are clarified.

关键词： heating boiling adding cycle piston clarified narrow additive brought reaches