Search Results 1-20 of 2545

  • Current situation of Cryptomeria japonica (Sugi) plantations aged over 100 years at the University of Tokyo Chiba Forest, Japan  [in Japanese]

    橋本 晋太 , 尾張 敏章 , 軽込 勉 , 千嶋 武 , 三次 充和 , 鶴見 康幸 , 鈴木 祐紀 , 米道 学 , 塚越 剛史 , 阿達 康眞 , 村川 功雄 , 大石 諭 , 當山 啓介

    … The mean and standard deviation of sugi stand volume and average diameter at breast height (DBH) were 960.2 ± 271.1 m3/ha and 46.4 ± 10.6 cm, respectively. … The sugi stand volume and average DBH showed large variations and there were no significant correlations with stand age. …

    東京大学農学部演習林報告 = Bulletin of the University of Tokyo Forests (141・142), 17-36, 2020-03


  • Effect of unevenly-distributed V pits on the optical and electrical characteristics of green micro-light emitting diode

    Lee Da-Hoon , Kang Daesung , Seong Tae-Yeon , Kneissl Michael , Amano Hiroshi

    … Compared with the LEDs with small V pits, the LEDs with large V pits produced higher output power at the high current region (>50 A cm^−2), but lower output power at the low current region (<20 A cm^−2). … Unlike the 300 µm-size LEDs, the 10 µm-size LEDs exhibited a large deviation in the light output, EQE, and EL wavelength. …

    Journal of Physics D: Applied Physics 53(4), 045106, 2020-01-23


  • Orientation of Ligand Field for Dangling Manganese in Photosynthetic Oxygen-Evolving Complex of Photosystem II

    Mino Hiroyuki , Nagashima Hiroki

    … From the viewpoint of the arrangement of the Mn valences in the cluster, a closed cubane model is effective, but without a large structural deviation from the S1 state crystal structure.ファイル公開:2021-01-09 …

    The Journal of Physical Chemistry B 124(1), 128-133, 2020-01-09


  • Effective Utilization Technique for Coal Having High Fluidity and Long Maximum Permeation Distance by Coal Size Adjustment

    Dohi Yusuke , Fukada Kiyoshi , Yamamoto Tetsuya , Matsui Takashi , Sumi Hiroyuki , Shimoyama Izumi

    … Although the maximum permeation distance measured by this method is roughly correlated with Gieseler fluidity, large deviation is observed, especially for high fluidity coals. …

    ISIJ International 60(5), 887-897, 2020


  • An Explanation for the Diagonally Predominant Property of the Positive Symmetric Ensemble Transform Matrix

    DUC Le , SAITO Kazuo , HOTTA Daisuke

    アンサンブル変換カルマンフィルタ(ETKF)では第一推定値の摂動を線形変換することで解析値の摂動を生成する。この線形変換を表現する行列をアンサンブル変換行列(ETM)と呼ぶ。全ての妥当なETMはアンサンブル空間における解析誤差共分散の行列平方根でかつアンサンブル平均を保存するものである必要があり、ETKFではETMとして正定値対称平方根(主平方根)<b>T</b><s …

    Journal of the Meteorological Society of Japan. Ser. II 98(2), 455-462, 2020


  • Proficiency Testing Schemes for Food Nutrition Analysis in Japan (2017–2018)  [in Japanese]

    Takebayashi Jun , Takasaka Noriko , Suzuki Ippei , Nakasaka Toshiaki , Hirabayashi Naoyuki , Ishimi Yoshiko , Umegaki Keizo , Chiba Tsuyoshi , Watanabe Takaho

    <p>本研究では,2017および2018年に実施した食品の栄養成分検査の技能試験について報告する.2017および2018年調査では,それぞれ65および73機関の参加が得られ,参加機関の70%以上は栄養成分表示に関する収去試験を担当しうる公的機関であった.調査試料の食品形態は畜肉ソーセージであり,調査項目はタンパク質,脂質,灰分,水分,炭水化物,熱量,ナトリウム,食塩相当量,カルシウム( …

    Food Hygiene and Safety Science (Shokuhin Eiseigaku Zasshi) 61(2), 63-71, 2020


  • Pesticide Analysis in Agricultural Products by GC-MS/MS Using STQ Method  [in Japanese]

    Okubo Yoshitsugu , Yagi Masahiro

    <p>農産物中に含まれる農薬の試験法として,STQ法(Solid Phase Extraction Technique with QuEChERS method)により試料の前処理を行い,胃袋型インサート・大量注入口装置搭載GC-MS/MSにより大量注入して測定する方法についての検証を行った.6種類の農産物を用いて添加回収試験を実施したところ,238~282成分が,真度70~120%, …

    Food Hygiene and Safety Science (Shokuhin Eiseigaku Zasshi) 61(1), 47-52, 2020


  • Characteristics of Manipulations by Railway Drivers who had made Train Stop Position Error at Station - Consideration based on Driving Performance Data-  [in Japanese]

    Suzuki Daisuke , Suzuki Ayako , Shimano Keiko , Kiyota Kazuki , Kakizaki Yutaka

    <p>駅での停車に関わるエラーを経験した運転士と経験していない模範的な運転士の運転操縦を比較し,エラーを経験した運転士の停車直前の運転操縦の特徴を明らかにすることを目的とした.鉄道事業者の運転士156 名を対象に,実際の列車に搭載された運転情報記録装置から収集された2 ヶ月分のデータ,34 687 回の駅停車について分析した.評価指標は駅停車毎の停車5 秒前速度,停車前5 秒間のブレー …

    Journal of Japan Society for Safety Enginennring 59(2), 83-91, 2020


  • Wiring Techniques for Large Size Silicon Probe Using Electroplating  [in Japanese]

    Aono Takanori , Kanamaru Masatoshi , Kohno Ryuji , Hosogane Atsushi

    … <p>To realize an uniformization of wiring thickness on a large size silicon probe, a design of wiring to supply current and electroplating conditions were analytically and experimentally evaluated. … As a result, the thickness of wirings was uniformized in the thick deviation of less than 1 µm on the silicon probe units. …

    IEEJ Transactions on Sensors and Micromachines 140(4), 84-91, 2020


  • Fast Convergence Active Noise Control System Using Single Adaptive Filter with a Whitening Function of Noise Source Signal  [in Japanese]

    Kobayashi Masaki

    … Therefore, the deviation of the frequency characteristic of the power spectrum is considered to be large. …

    IEEJ Transactions on Electronics, Information and Systems 140(3), 384-390, 2020


  • Receiver Differential Code Bias Estimation under Disturbed Ionosphere Status Using Linear Planar Model Based Minimum Standard Deviation Searching Method with Bias Detection

    ZHANG Yan , CHEN Lei , TANG Xiaomei , OU Gang

    … Secondly, we validate the correctness of our proposed method through theoretical analysis and propose bias detection to avoid large estimation bias. …

    IEICE Transactions on Communications E103.B(3), 272-282, 2020


  • Modelling and Crystal Plasticity Analysis for the Mechanical Response of Alloys with Non-uniformly Distributed Secondary Particles

    Okuyama Yelm , Tanaka Masaki , Ohashi Tetsuya , Morikawa Tatsuya

    … Each particle spacing was distributed with a standard deviation of approximately 2 to 3 times larger than the average particle spacing. … The CP-FEM indicated that in dispersed hardened alloys, microscopic load transfer occurred between the areas where the large particles spacing and the small one at the yielding.</p> …

    ISIJ International, 2020


  • Dislocation Emission from Grain Boundaries in High-Entropy Alloys: Influence of Atomic Compositions at Grain Boundaries  [in Japanese]

    SHIOTANI Kohei , NIIYAMA Tomoaki , SHIMOKAWA Tomotsugu

    … Because general grain boundaries (GBs) contain various size of atomic free volume, a deviation of atomic compositions at GBs may appear in HEAs by replacing atoms with different atomic sizes to reduce atomic free volume at GBs. … In this study, the influence of the deviation of atomic compositions at GBs on dislocation emission from GBs in HEAs is investigated through two dimensional atomic simulations. …

    Journal of the Society of Materials Science, Japan 69(2), 141-148, 2020


  • Biomechanical Analysis of the Head Movements of a Person Thrown by the Judo Technique 'Seoi-nage'

    MURAYAMA Haruo , HITOSUGI Masahito , MOTOZAWA Yasuki , OGINO Masahiro , KOYAMA Katsuhiro

    … Peak resultant linear and angular accelerations were 20.3 ± 9.8 G and 1890.1 ± 1151.9 rad/s<sup>2</sup>, respectively (means ± standard deviation). … The likely mechanism of acute subdural hematoma caused by Seoi-nage is that a large angular acceleration causes large strains and deformations of the brain surface and subsequent rupture of cortical vessels.</p> …

    Neurologia medico-chirurgica 60(2), 101-106, 2020


  • A case of bilateral internal carotid system occlusion treated with mechanical thrombectomy in one session  [in Japanese]

    Furuta Yasuyuki , Fujitani Shigeta , Ohgaki Fukutaro , Ogawa Shotaro , Mizuta Ryosuke , Fujimoto So , Ueda Masayuki , Ota Takahiro

    <p><b>要旨</b>:両側主幹動脈塞栓症は全虚血性脳卒中の0.34%に生じたとの報告があり,治療例に関する報告は少数で予後も不良である.両側内頸動脈系塞栓症に対し機械的血栓回収療法が奏功した症例を報告する.心房細動未治療の69 歳男性,意識障害,右共同偏視,左上下肢麻痺,失語で救急搬送となった.来院時,JCS 20,NIHSS 28 点.ASPECTS-DW …

    Japanese Journal of Stroke, 2020


  • The Association Between Coronary Artery Calcification and Subclinical Cerebrovascular Diseases in Men: An Observational Study

    Khan Md Maruf Haque , Ohkubo Takayoshi , Nozaki Kazuhiko , Miura Katsuyuki , Ueshima Hirotsugu , for the SESSA Research Group , Fujiyoshi Akira , Shiino Akihiko , Hisamatsu Takashi , Torii Sayuki , Suzuki Sentaro , Kunimura Ayako , Segawa Hiroyoshi , Kadota Aya

    … </b></p><p><b>Results: </b>The mean (standard deviation) age of the participants was 68 (8.4) years. … The presence and degree of CAC may be a useful indicator for SCVDs involving small and large vessels.</p> …

    Journal of Atherosclerosis and Thrombosis, 2020


  • Prevalence, disease burden, and treatment reality of patients with severe, uncontrolled asthma in Japan

    Nagase Hiroyuki , Adachi Mitsuru , Matsunaga Kazuto , Yoshida Atsushi , Okoba Tomoko , Hayashi Nobuya , Emoto Kahaku , Tohda Yuji

    … Yearly total medical expenses were also greater for SUA patients (mean [standard deviation]: 8346 [12,280], vs 5989 [10,483] and 3422 [8800] USD, respectively).</p><p><i>Conclusions:</i> … The percentages of severe asthma and SUA patients continuously treated in Japan were obtained through this large-scale analysis using a health insurance claims database. …

    Allergology International 69(1), 53-60, 2020



    MIYAZAKI Yasuhiro , RAHMAN Mahmudur , OKUI Yoshiaki

    <p> 幅が狭い箱桁等に用いられる単リブ補剛板の圧縮強度を,実験および数値計算結果から検討した.まず,橋梁用高降伏点鋼板SBHS500と普通鋼板SM490Y製の単リブ補剛板4枚で構成される矩形短柱の圧縮実験を4ケース実施し,圧縮強度特性および荷重-面外変位関係などを明らかにした.この実験供試体では初期不整も併せて計測し,計測結果および圧縮試験結果を用いて非線形有限要素モデルの検証を行い …

    Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE)) 76(1), 67-81, 2020


  • A Control Method for Compensating Communication Delays in Load Frequency Control with Electric Vehicle Aggregators

    Cai Sinan , Matsuhashi Ryuji

    … Due to the intermittent generation of renewable energy sources, large integration of renewable energy sources tends to cause frequency stability problems in power systems. … In a power system which applies Flat Frequency Control (FFC), the proposed method estimates the relationship between the LFC control signal and the frequency deviation in the system from historical data and control the EVs directly through the real-time frequency deviation. …

    Journal of Japan Society of Energy and Resources 41(1), 1-10, 2020


  • Rice quality analysis using the Crop Survey database of Japan for climate impact assessment  [in Japanese]

    NISHIMORI Motoki , ISHIGOOKA Yasushi , WAKATSUKI Hitomi , KUWAGATA Tsuneo , HASEGAWA Toshihiro , YOSHIDA Hiroe , TAKIMOTO Takahiro , KONDO Motohiko

    … We used a large collection of rice quality dataset from the Crop Survey database provided ad hoc by the Ministry of Agriculture, Forestry and Fisheries of Japan. … The results showed that the indices of rice qualities were well correlated with a heat stress index HD_m26, that is a cumulative deviation of daily averaged surface air temperature from a base of 26 °C during the 20days after heading. …

    Climate in Biosphere 20(0), 1-8, 2020


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