Search Results 1-20 of 2415

  • Thermal shock reliability of a GaN die-attach module on DBA substrate with Ti/Ag metallization by using micron/submicron Ag sinter paste

    Kim Dongjin , Chen Chuantong , Pei Chun , Zhang Zheng , Nagao Shijo , Suetake Aiji , Sugahara Tohru , Suganuma Katsuaki

    … Microstructural observation by field-emission scanning electron microscopy and energy-dispersive X-ray spectroscopy showed a crack growing inside the Ag/Al bonding interface during thermal cycles due to the large plastic deformation of the Al layer. … In addition, with the aid of simulations based on the finite element method, the damage mechanism is discussed in further detail, including the Al grain boundary effect. …

    Jpn. J. Appl. Phys. 58(SB), SBBD15, 2019-03-20


  • Forensics Mechanism in Kernel Land to Preserve Evidence of Malware Intruding into In-vehicle LAN  [in Japanese]

    大平 修慈 , 井上 博之 , 新井 イスマイル , 藤川 和利

    インターネットとつながる自動車において,カーナビ等の車載インフォテインメントシステム(IVI)へのマルウェアの侵入等による車載LANへのサイバー攻撃が問題となっている.また,マルウェアのような不正なプログラムによる事故が発生した場合,ドライバの過失によるものなのか,マルウェアの車載LANへの侵入・攻撃によるものなのかを区別する仕組みはない.不具合や事故が起こった後のデジタル・フォレンジックのために …

    情報処理学会論文誌 60(3), 791-802, 2019-03-15


  • Proposal of a Method for Damage Detection by Using Dynamic Characteristics of a Re-reinforced Steel Reinforced Concrete Building Based on Seismic Observation  [in Japanese]

    太田 俊成 , 渡部 洋

    関東学院大学工学総合研究所報 (47), 27-34, 2019-03

  • Evolutions of Nonlinear Acoustics in a High Cr Ferritic Heat Resisting steel, ASME Grade 91, Welded Joint during Creep  [in Japanese]

    大谷 俊博

    ASME Grade 91鋼は,蒸気温度が600 ℃の超々臨界圧火力発電用ボイラの主要構造材として使われている.この材料の溶接継手のクリープ寿命の低下は,高温長時間使用中に溶接熱影響部に生じるType-IV損傷に起因する.本研究では,電磁超音波共鳴法(EMAR)を用いてASME Gr. 91鋼の溶接継手部のクリープ損傷中の2つの非線形音響特性: 非線形超音波スペクトロスコピー(NRUS)法による共 …

    湘南工科大学紀要 = Shonan Institute of Technology journal 53(1), 1-9, 2019-03


  • Numerical Study on Dynamic Behavior of Glass Screen System of Law-rise Steel Frame Building Based on Seismic Observation Records  [in Japanese]

    小林 礼奈 , 渡壁 守正 , 脇山 善夫 , 稲井 慎介 , 石田 琢志

    … Serious damage to nonstructural elements such as glass and ceiling materials was reported after the 2011 earthquake off the Pacific coast of Tohoku. … Because there is insufficient experimental data to draw firm conclusions, this study carried out a simulation analysis in an attempt to measure the effect of structural glass walls on damage to nonstructural elements. …

    広島工業大学紀要. 研究編 53, 131-136, 2019-02


  • Observation of dissociative quasi-free electron attachment to nucleoside via excited anion radical in solution

    Ma Jun , Kumar Anil , Muroya Yusa , Yamashita Shinichi , Sakurai Tsuneaki , Denisov Sergey A. , Sevilla Michael D. , Adhikary Amitava , Seki Shu , Mostafavi Mehran

    … 2019-01-10.Damage to DNA via dissociative electron attachment has been well-studied in both the gas and condensed phases; …

    Nature Communications (10), 2019-01-09


  • Observation of strong wind damage in Ie Island, Okinawa Prefecture, caused by a tornado  [in Japanese]

    玉城 麿 , 西村 宏昭

    JWE = 日本風工学会誌 : journal of wind engineering, JAWE : wind engineers, JAWE 44(1), 55-60, 2019-01

  • Evolution of Quasi-Brittle Hydrogen-Assisted Damages in a Dual-Phase Steel  [in Japanese]

    Kumamoto Tsubasa , Koyama Motomichi , Sato Koichi , Tsuzaki Kaneaki

    … <p>We studied the statistical quantitative analysis of the hydrogen-assisted damage evolution behavior from nano- to micro-scale by combining positron annihilation spectroscopy (PAS) and scanning electron microscopy (SEM)-based damage characterization in a dual-phase steel with a tensile strength of 960 MPa. … We divided the damage evolution behavior into three stages: damage incubation; …

    Journal of the Japan Institute of Metals and Materials, 2019


  • Fracture analysis of porous Si–SiC ceramics with anisotropic three-dimensional network structure

    HIMOTO Iori , YAMASHITA Seiji , KITA Hideki

    … Observations of fracture behavior during the bending tests were conducted using a high-speed camera, image analysis of stress distribution, and observation of crack distribution inside the partially damaged specimens using X-ray computed tomography. …

    Journal of the Ceramic Society of Japan 127(5), 295-303, 2019



    MIZUTANI Yukari , SUGAI Michiyo , MORI Yasuhiro , NOZU Atsushi , MITOBE Shigeki

    … However, to employ effective measures for seismic damage mitigation and contribute to a resilient society, the GMI's should be estimated in greater detail, such as at each construction site, and the seismic risk should be assessed accordingly. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) 84(758), 459-467, 2019


  • Evaluation of Deterioration Damage for Liquid Oxygen/Hydrogen Combustion Chamber of Copper Alloy by Replica Method for Oxide Film  [in Japanese]

    Shiwa Mitsuharu , Hayakawa Masao , Hashimoto Tomoyuki , Takegoshi Masao , Sato Eiich

    … <p>Non-destructive damage evaluation of rocket engine combustion chamber was investigated by using replica method through rapid setting silicon rubber molding agent. … Observation results of the sampled replica showed the traces of the oxide film formation, disappearance of the grinding marks and crack formations on the oxide films due to redox reaction during repeated uses. …

    Journal of the Japan Institute of Metals and Materials 83(5), 176-180, 2019


  • Effects of Local Administration of Novel Bisphosphonate Disodium Dihydrogen-4-[(Methylthio) Phenylthio] Methane- Bisphosphonate (MPMBP) on the Healing of Femoral Bone Defects in Wistar Rats

    Saito Haruka , Shimizu Yoshinaka , Tone Takeshi , Odashima Kenji , Sano Yuya , Shinoda Hisashi , Takahashi Tetsu , Kumamoto Hiroyuki

    … <p>The osteogenic effect of newly developed bisphosphonate (Disodium Dihydrogen-4-[(methylthio) phenylthio] Methane- Bisphosphonate (MPMBP)) was examined for clinical application in bone damage. … Long-term observation was performed at 12 and 24 weeks after discontinuation of administration of MPMBP at 3 weeks (experiment 2). …

    Journal of Hard Tissue Biology 28(2), 207-216, 2019



    KIDO Toshimichi , NAGANO Masayuki , HIKIMA Kazuhito

    … building damage and the pulse-type ground motions, it is important to clarify the generation mechanism of large-amplitude pulse-type ground motions, which greatly influence the response of various types of structures including super-high-rise and isolated buildings.<br> In this study, we constructed a seismic source model of the main shock of the 2016 Kumamoto earthquake to simulate the corresponding strong ground motions, including those recorded in the vicinity of the seismic faults and in the building damage zone in …

    Journal of Structural and Construction Engineering (Transactions of AIJ) 84(757), 373-383, 2019


  • Building Damage Assessment Using Intensity SAR Data with Different Incidence Angles and Longtime Interval

    Ge Pinglan , Gokon Hideomi , Meguro Kimiro

    … <p>When carrying out change detection for building damage assessment using synthetic aperture radar (SAR) intensity images, it is desirable that the observation conditions of the images are similar and acquisition time is close to the earthquake occurrence time. … To apply the obtained data that had different observation conditions and longtime intervals for building damage assessment, two ways were considered and studied. …

    Journal of Disaster Research 14(3), 456-465, 2019


  • Special Issue on Disaster and Big Data Part 4

    Koshimura Shunichi

    … Many new findings, insights, and suggestions have been made and implemented in damage determination and in disaster observation, sensing, and simulation. …

    Journal of Disaster Research 14(3), 415-415, 2019


  • Evaluation of static tensile strength and fatigue strength degradation of plain woven CFRP laminates under seawater immersion  [in Japanese]

    KOSHIMA Shuhei , KAJII Norihiro , HOSOI Atsushi , KAWADA Hiroyuki

    … From observation of fracture surfaces by scanning electron microscopy (SEM), it was shown that the fiber/matrix interface deteriorated remarkably after seawater immersion. … Moreover, the difference of damage growth behaviors due to immersed in seawater under fatigue loading was investigated using soft X-ray photography. … On specimen immersed in seawater, the accumulation of damage expanded more widely due to interface degradation compared with that of no immersion. …

    Transactions of the JSME (in Japanese) 85(871), 18-00435-18-00435, 2019


  • Status and issues of operations in the intensive care unit  [in Japanese]

    Tanikawa Atsushi , Shimizu Keiki

    <p>集中治療室 (以下, ICU) で手術を行った症例を検討し, ICUでの手術について現状と課題を報告する。対象は2015年4月から2017年3月までの2年間で, 6症例 (胸部1例, 腹部5例) の手術計10件を検討した。症例はopen abdomen (以下, OA) に対して腹腔内観察や閉腹といった比較的短時間の手術から腸管切除や膵切除といった難易度の高い手術までと多岐にわた …

    KANTO Journal of Japanese Association for Acute Medicine 39(3), 409-412, 2019


  • Postoperative complications (stenosis/occlusion) of vascular access  [in Japanese]

    WATANABE Ryoji , KONDO Yoshimasa , NAKATA Namie , UEHARA Takahide , OOMOTO Masaki

    慢性維持透析療法に必要なバスキュラーアクセス(vascular access: VA)は,VAエコーで評価が可能である.自己血管動静脈内シャント(arteriovenous fistula: AVF),人工血管内シャント(arteriovenous graft: AVG),動脈表在化についてのVAエコーによる狭窄・閉塞の評価について述べる.VAの狭窄,閉塞の評価はBモードにて,シャント血管の走行や …

    Choonpa Igaku 46(2), 149-158, 2019


  • Development and Applicability of Multiscale Multiphysics Integrated Simulator for Tsunami

    Arikawa Taro , Chida Yu , Seki Katsumi , Takagawa Tomohiro , Shimosako Kenichiro

    … Most of the breakwaters are washed away, which is similar to the actual reported damage, indicating that the proposed system can effectively reproduce tsunami structural damage.</p> …

    Journal of Disaster Research 14(2), 225-234, 2019


  • Development of a Real-Time Damage Estimation System

    Fujiwara Hiroyuki , Nakamura Hiromitsu , Senna Shigeki , Otani Hideyuki , Tomii Naoya , Ohtake Kiyonori , Mori Toshiya , Kataoka Shojiro

    … <p>Assessing the extent of damage quickly following a major natural disaster is crucial to ensuring that effective decisions are made to establish an appropriate first response system and implement response measures. … Therefore, a real-time earthquake damage estimation system was developed. …

    Journal of Disaster Research 14(2), 315-332, 2019


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