Search Results 1-20 of 727

  • SAR Target Recognition via Joint Classification of Monogenic Components with Discrimination Analysis

    Zhang Zhenyu

    … <p>This paper proposes a method using joint classification of monogenic components with discrimination analysis for target recognition in synthetic aperture radar (SAR) images. … Three monogenic components, namely, phase, amplitude, and orientation, are extracted from the original image and classified by joint sparse representation for target recognition. …

    Journal of Advanced Computational Intelligence and Intelligent Informatics 23(3), 414-420, 2019

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  • Separation and Purification of Epigallocatechin Gallate and Epicatechin Gallate by Two-step Chromatography Involving <i>β</i>-cyclodextrin Bonded Agar

    Lv Shuquan , Zhang Xiaohong , Liu Siping , Lv Kaibo , Yang Wenting , Zhou Zhiwei

    … <p>A novel method was developed to separate the tea polyphenols epigallocatechin gallate (EGCG) and epicatechin gallate (ECG) by two-step chromatography. … For the second-step, The recovery rates of 85.36% and 86.09% for EGCG and ECG were obtained respectively by a novel stationary phase of <i>β</i>-CD bonded agar gel. …

    Food Science and Technology Research 25(2), 187-195, 2019

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  • Low-lying collective excited states in nonintegrable pairing models based on the stationary-phase approximation to the path integral

    日野原 伸生 , 中務 孝 , Fang Ni , Nobuo HINOHARA , Takashi NAKATSUKASA

    … For a description of large-amplitude collective motion associated with nuclear pairing, requantization of time-dependent mean-field dynamics is performed using the stationary-phase approximation (SPA) to the path integral. … We overcome the difficulty of the SPA, which is known to be applicable to integrable systems only, by developing a requantization approach combining the SPA with the adiabatic self-consistent collective coordinate method (ASCC+SPA). …

    Physical review C 98(6), 064327, 2018-12

    IR 

  • Comparative study of the requantization of the time-dependent mean field for the dynamics of nuclear pairing

    Ni Fang , Nakatsukasa Takashi , 中務 孝

    … The method is based on the stationary-phase approximation to the path integral. …

    Physical review C 97(4), 044310, 2018-04

    IR 

  • INVERSE SCATTERING ANALYSIS FOR CRACK IN GENERAL ANISOTROPIC ELASTIC SOLIDS USING PURE SH WAVE  [in Japanese]

    SAITOH Takahiro , ONODERA Takashi , FURUKAWA Akira , HIROSE Sohichi

    … 逆散乱解析に必要な散乱波形は, 従来の時間領域境界要素法の数値安定性を改善した演算子積分時間領域境界要素法(CQBEM:Convolution Quadrature BoundaryElement Method) を用いて求める. …

    Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM)) 74(2), I_65-I_74, 2018

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  • <b>Development of a Non-Contact Method for Measuring Viscoelastic Properties of Articular Cartilag</b><b>e </b>

    ZHANG Yuelin , YOSHINO Tatsunori , YONEYAMA Satoru

    … To diagnose the disease at an early stage, a non-contact diagnostic method is required. … This paper describes the development of a method for measuring the viscoelastic properties of articular cartilage by acoustic excitation at low frequency. … In this method, the articular cartilage's complex shear modulus is obtained by measuring the phase velocity of a stationary wave on the articular cartilage that is excited by a wide range speaker; …

    Advanced Experimental Mechanics 3(0), 197-202, 2018

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  • Rapid Analysis of Cyclic Peptide Cyclosporine A by HPLC Using a Column Packed with Nonporous Particles

    Sakai-Kato Kumiko , Nanjo Kunie , Goda Yukihiro

    … Under optimized conditions, cyclosporine A was separated with high resolution from other cyclic peptides within 3 min, because the mass transfer resistance in the stationary phase was reduced by the use of the small, nonporous particles. … In the context of the rapid development of cyclic peptides with similar physicochemical characteristics to cyclosporine A, our developed method is useful for the development of cyclic peptide therapeutics.</p> …

    Chemical and Pharmaceutical Bulletin 66(8), 805-809, 2018

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  • Dynamic behavior of binary water droplets approaching each other in cloud by the improved two-phase lattice Boltzmann simulation  [in Japanese]

    SAWADA Jumpei , YOSHINO Masato , SUZUKI Kosuke

    … <p>Dynamic behavior of binary water droplets approaching each other in cloud is simulated by the improved two-phase lattice Boltzmann method with the Continuum Surface Force (CSF) model. … This method does not need to solve the pressure Poisson equation and enables us to calculate two-phase flows with high density ratio accurately and efficiently. …

    Transactions of the JSME (in Japanese), 2018

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  • Dynamic behavior of binary water droplets approaching each other in cloud by the improved two-phase lattice Boltzmann simulation  [in Japanese]

    SAWADA Jumpei , YOSHINO Masato , SUZUKI Kosuke

    … <p>Dynamic behavior of binary water droplets approaching each other in cloud is simulated by the improved two-phase lattice Boltzmann method with the Continuum Surface Force (CSF) model. … This method does not need to solve the pressure Poisson equation and enables us to calculate two-phase flows with high density ratio accurately and efficiently. …

    Transactions of the JSME (in Japanese) 84(861), 18-00023-18-00023, 2018

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  • Application of spectrophotometry to estimate the optimum culture conditions for <I>Nannochloropsis oculata</I> as a diet for zooplankton

    Matsui Hideaki , Okawa Ryo , Anraku Kazuhiko , Kotani Tomonari

    微細藻類 <I>Nannochloropsis oculata</I> の収穫を適当な時期に行い,ワムシに給餌することによって効率的なワムシ栄養強化を行うことができる。現在,<I>N. oculata</I> の適切な収穫時期は細胞数の計数に基づいて判断されており,餌料価値を正確に判断することは困難である。そこで,本研究では分光光度計を用いて簡便な収 …

    Aquaculture Science 65(3), 209-219, 2017

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  • Multi-Perfluoroalkyl Derivatization of Polyamines for Selective Liquid Chromatography-Tandem Mass Spectrometric Analysis Utilizing Fluorous Affinity

    HAYAMA Tadashi , TAMASHIMA Erina , YOSHIDA Hideyuki , YAMAGUCHI Masatoshi , NOHTA Hitoshi

    … <p>A novel derivatization method for the selective and sensitive liquid chromatography (LC)-tandem mass spectrometric (MS/MS) analysis of polyamines (putrescine, cadaverine, spermidine, and spermine) was developed. … Compared with the non-fluorous compounds, the fluorophilicity of the multi-fluorous derivatives was sufficient for realizing strong retention on an LC column with a perfluoroalkyl-modified stationary phase. …

    CHROMATOGRAPHY 38(3), 107-113, 2017

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  • A STUDY ON A NUMERICAL MODEL OF TWO-PHASE GAS-LIQUID FLOW INDUCED BY A MOVING SOLID WITH HIGH ACCURACY  [in Japanese]

    MATSUMOTO Hiroshi , SHIGEMATSU Takaaki

    本研究では,揺動する固体周りに形成される流体運動及び自由水面の変動を高い精度で計算できる手法を提案し,その妥当性を示した.そのうえで,本手法を用いることによって,矩形容器内のスロッシングによる水面変動量の計算結果が,解析解に良く一致することが確認された.また,一方向定常流中に固定された水平円柱の後流域における時間平均流速の分布およびStrouhal numberの計算結果が,既往の実験結果を良好に …

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 73(2), I_865-I_870, 2017

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  • Simultaneous Quantitation of Boric Acid and Calcium Fructoborate in Dietary Supplements by HPTLC–Densitometry

    BITA Andrei , SCOREI Ion Romulus , HUNTER John , EVERS Brad , NEMZER Boris , ANGHELINA Florin , ROGOVEANU Otilia-Constantina , MOGOSANU George Dan , BEJENARU Ludovic Everard , OANCEA Carmen Nicoleta , BEJENARU Cornelia , CROITORU Octavian , RAU Gabriela , NEAMTU Johny , SCOREI Iulia Daria

    … The paper describes a new, simple, selective and precise high-performance thin-layer chromatographic (HPTLC) method for the simultaneous identification and quantitative determination of boric acid (BA) and calcium fructoborate (CFB) in bulk and tablet/capsule dosage forms of dietary supplements. … precoated glass plates were used as the stationary phase. … The mobile phase consisted of 2-propanol–water 8:2 (v/v). …

    Analytical Sciences 33(6), 743-746, 2017

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  • Development of Chiral Separation Using Chiral Stationary Phase Based on Polysaccharide Derivatives  [in Japanese]

    OHNISHI Atsushi

    <p>多糖誘導体系キラル固定相が,幅広い光学異性体化合物群に対して,極めて高いキラル識別能力を有することは既によく知られている。現在の光学純度測定手法の主流はHPLC 法であり,そこでは多糖誘導体系キラルカラムが専ら使用されているとの報告もある。</p><p>一方,トリグリセリドに代表される油脂系化合物はキラル分離困難な化合物として考えられていたが,ここ数年,分 …

    Oleoscience 16(8), 381-386, 2016

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  • Removal of <i>Microcystis aeruginosa</i> cells and microcystin-LR using ceramic carrier in a continuous flow bioreactor  [in Japanese]

    SHIMIZU KAZUYA , ZHANG ZHENYA , SUGIURA NORIO , UTSUMI MOTOO , OKANO KUNIHIRO , ITAYAMA TOMOAKI , IWAMI NORIO , MASEDA HIDEAKI , KINOHIRA HIROYUKI , LI JIEMING , INAMORI YUHEI

    有毒物質産生藍藻類によるブルームは、世界的な公衆衛生上の問題となっている。藍藻類捕食原生動物や微小動物が高密度に生物学的浄水処理装置内の生物膜に存在する際には、有毒物質産生藍藻類は効果的に除去される。本論文において、鞭毛虫<i>Monas guttula</i>の担体としてセラミックを用いることにより、<i>M. guttula</i>の効果的な増殖 …

    Japanese Journal of Water Treatment Biology 52(2), 35-43, 2016

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  • A Simple Method for the Removal of Organotin Residues from Acetates and a Homoallylic Alcohol Prepared from Organostannane Reagents: Column Chromatography Using 10%-Moist SiO<sub>2</sub>

    Nishida Takanori , Matsuda Daiki , Kasuga Issei , Orita Akihiro , Otera Junzo

    … In sharp contrast to this, a similar purification method using dry silica as the stationary phase provided acetate containing ca. …

    Chemistry Letters 45(11), 1280-1282, 2016

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  • Simultaneous Analytical and Purification Methods for Nanoparticles and Small Molecules Using a Silica Monolith  [in Japanese]

    KATO Masaru

    現在,機能性物質を内包した大きさ100 nm以下のナノ粒子が,診断,治療,工業生産など,様々な分野で使用されている.これまでにナノ粒子の量,大きさや形状などを評価するために,多くの優れた分析法が開発されている.著者らは,大きさ数マイクロメートルの貫通孔と数10 nmの微細孔を有するモノリスカラムは,大きさが100 nm程度のナノ粒子と低分子化合物の一斉分析に有効であることを見いだした.ナノ粒子は主 …

    BUNSEKI KAGAKU 65(12), 703-714, 2016

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  • Development of Field-flow Orthogonal Electrochromatography  [in Japanese]

    MEKATA Hiroaki , KITAGAWA Shinya , IIGUNI Yoshinori , OHTANI Hajime

    新たな分離分析手法として,流速の異なる流れ場での液体クロマトグラフィーと電気泳動を組み合わせた「フィールドフロー直交型電気クロマトグラフィー(field-flow orthogonal electrochromatography, FFOEC)」の提案を行った.FFOECでは,コントロールされた不均一な流速場を有する平板型固定相内で,流れに直交する電気泳動を行い,field-flow fracti …

    BUNSEKI KAGAKU 65(12), 737-744, 2016

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  • A mutual information analysis of cardiorespiratory coupling by phase information of respiratory sinus arrhythmia during incremental cycle exercise  [in Japanese]

    Shirata Yusuke , Ukawa Narumi , Saitoh Tadashi , Niizeki Kyuichi

    … <p>The objective of the present study was to investigate autonomic nervous system influence on the phase-lag of respiratory sinus arrhythmia (RSA) with respect to the breathing during physical exercise. … After 3-min of resting control, eleven young subjects pedaled a stationary cycle ergometer at 50 rpm to exhaustion, with a work rate increase of 20 W/min. Respiratory flow, beat-to-beat R-R intervals, and gas exchange variables were measured. …

    Transactions of Japanese Society for Medical and Biological Engineering 54Annual(27PM-Abstract), S225-S225, 2016

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  • A PROPOSED METHOD OF MONITORING FLOW FIELD AND MASS BUDGET IN ESTUARY  [in Japanese]

    KUSUMOTO Yoshimu , KOIBUCHI Yukio , HIGA Hiroto , MANO Junichiro

    都市部河口域において憩える親水空間の整備が進められる一方で,周辺の水環境は下水流入や赤潮等,慢性的な悪化がみられる例が多い.適切なモニタリングが望まれるも感潮域の流動場は複雑であり,流量の計測すら困難である.そこで本研究ではお台場海浜公園を対象に1台の固定H-ADCPによる感潮域の流量推定法を考案した.ADCPによる観測結果との比較から同地点では上層と下層で潮汐流に位相差が表れることがわかり,これ …

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 72(2), I_1225-I_1230, 2016

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