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NUMERICAL AND EXPERIMENTAL STUDY OF LURE MOVING IN WATER

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Transactions of Nanjing University of Aeronautics and Astronautics 2013年第3期30卷 257-259页

作者： Wataru Sekiguchi Naoya takahashi Shigeho Noda Ryutaro Himeno Graduate School of Engineering Tokyo Denki University Department of Engineering Tokyo Denki University Advanced Center for Computing and Communication

The motion of a lure in water is investigated experimentally and *** lure motion in water of apassing water tank is observed,and the periodic motion is *** the Fourier analysis,it is found that the frequency with the largest amplitude in the lateral direction depends on the lip width of the *** understand the lure dynamics,a numerical simulation of the flow field around the lure is *** shape is measured using an X-ray computer tomography and converted into a voxel *** visualization,it is found that vortex sheds from its lip correspond to the vibration frequency of the lure.

关键词： fishing lure passing water channel voxel model X-ray computer tomography computational fluid dynamics(CFD)

Delivery or previous cesarean？ A comment on ＂Antepartum hemorrhage from previous-cesarean-sectioned uterus as a potential sign of uterine artery pseudoaneurysm＂

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2017年第8期18卷 723-724页

作者： Shigeki MATSUBARA Hironori takahashi Daisuke MATSUBARA Yosuke BABA Department of Obstetrics and Gynecology Jichi Medical University329-0498 Tochigi Japan Department of Pediatrics Jichi Medical University 329-0498Tochigi Japan

Uterine artery pseudoaneurysm （UAP）, an im-portant disorder causing postpartum hemorrhage, hasbeen considered to occur after ＂traumatic delivery＂such as cesarean section （CS）. Our recent study （Babaet al., 2016... 详细信息

关键词：浙江大学学报英文版

Measurement of the Electron Bernstein Wave Emission with One of the Power Transmission Lines for ECH in LHD

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Plasma Science and Technology 2011年第4期13卷 405-409页

作者： Hiroe IGAMI Hiroshi IDEI Shin KUBO Yasuo YOSHIMURA Takashi SHIMOZUMA Hiromi takahashi National Institute for Fusion Science Research Institute for Applied Mechanics Kyushu University

Possibility of the measurement of radiated waves derived from the thermally emitted electron Bernstein wave （EBW） is numerically investigated based on the assumption of the super dense core （SDC） plasma generated in LHD. EBW that is thermally emitted in the electron cyclotron resonance （ECR） layer may couple with the electromagnetic wave and be emitted to the vacuum via the EBW-extraordinary-ordinary （B-X-O） mode conversion process. We consider the use of one of the transmission lines for electron cyclotron heating （ECH） in LHD as a receiving system of the emission. It is derived that the waves in the fundamental cyclotron frequency range are emitted as the EBW near their upper hybrid resonance （UHR） layer outside the last close flux surface （LCFS）. On the other hand, waves in the second harmonics cyclotron frequency range are emitted in the core region. It means that successful measurement of waves of the second harmonic frequency range emitted from extremely high dense core plasma with setting an aim angle for receiving indicates a possibility of the second harmonic ECH by EBW in the core region with setting the same aim angle and the same polarization for launching.

关键词： LHD electron cyclotron heating (ECH) electron Bernstein wave (EBW) high density plasma

Non-Fourier heat conduction study for steady states in metallic nanofilms

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Chinese Science Bulletin 2012年第24期57卷 3239-3243页

作者： WANG HaiDong LIU JinHui GUO ZengYuan takahashi Koji Key Laboratory for Thermal Science and Power Engineering of Ministry of Education School of AerospaceTsinghua UniversityBeijing 100084China Graduate School of Engineering Kyushu UniversityFukuoka 819-0395Japan

As a fundamental theory of heat transfer, Fourier's law is valid for most traditional conditions. Research interest in non-Fourier heat conditions is mainly focused on heat wave phenomena in non-steady states. Recently, the thermomass theory posited that, for steady states, non-Fourier heat conduction behavior could also be observed under ultra-high heat flux conditions at low ambient temperatures. Significantly, this is due to thermomass inertia. We report on heat conduction in metallic nanofilms from large currents at low temperatures; heat fluxes of more than 1×1010 W m 2 were used. The measured average temperature of the nanofilm is larger than that based on Fourier's law, with temperature differences increasing as heat flux increased and ambient temperature decreased. Experimental results for different film samples at different ambient temperatures reveal that non-Fourier behavior exists in metallic nanofilms in agreement with predictions from thermomass theory.

关键词：非傅立叶热传导非稳定状态纳米薄膜金属低环境温度 Fourier 傅立叶定律高热通量

Optimization of Nonlinear Vibration Characteristics for Seismic Isolation Rubber

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Computer Modeling in Engineering & Sciences 2017年第1期113卷 1-15页

作者： A.takahashi T.Shibata K.Motoyama K.Misaji Nihon University College of Industrial TechnologyDept.of Mathematical Information EngineeringJapan. Mississippi State University U.S.A.

A method for reducing the damage to a structure caused by an earthquake namely,using laminated rubber for seismic isolation is proposed,and the vibration characteristics of the rubber(which minimizes the seismic response of the structure during an earthquake)is optimized.A method called“Equivalent Linear System using Restoring Force Model of Power Function Type”(PFT-ELS)is applied to nonlinear vibration analysis of the *** that analysis,a building with 15 layers of the laminated rubber is *** seismic response of the building is analyzed,and the usefulness of the laminated rubber is demonstrated by comparing the seismic responses in the cases with and without the laminated *** addition,the hysteresis restoring-force characteristic of the laminated rubber,which minimizes the seismic response of the building,was optimized by using a genetic algorithm(GA).Based on these results,the optimum restoring-force characteristic for different earthquakes was *** a result,it was clarified that the developed optimization method can determine the vibration characteristics of the laminated rubber for minimizing the damage to the structure in the design phase.

关键词： Seismic-isolation laminated rubber high-rise-building structure PFT-ELS seismic-response analysis long-period earthquake

A Proposal of a Spline Filter that Achieves Both Robustness and Lower Compatibility

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Nanomanufacturing and Metrology 2021年第2期4卷 77-85页

作者： Yuki Kondo Munetoshi Numada Keiya takahashi Ichiro Yoshida Hiroyasu Koshimizu HOSEI University 3-7-2 Kajino-choKoganei-shiTokyo184-8584Japan Chukyo University 101-2 Yagotohonmati Showa-kuNagoyaAichi466-8666Japan YYC Solution 3-102-3F Kamiyashiro Meito-kuNagoyaAichi465-0025Japan

A spline filter is used to extract roughness profiles for the measurement of surface texture and is useful when sufficient sections before and after a primary profile could not be *** is because a spline filter could prevent the end effect,which is the fluctuation of output data that occurs around both ends of the primary profile and depends on the width of the weighting function of a *** spline filter is based on the calculation of an inverse matrix instead of the convolution of the weighting function of the *** input data include outliers,the output of a spline filter greatly *** solve this problem,we propose a robust spline ***,output of the robust spline is not in agreement with that of the spline filter when input data do not include ***,the robust spline filter has no lower *** this paper,the"Fast M-estimation Spline Filter(FMSF)"is *** uses the fast M-estimation *** performs robust to input data including outliers,and gives the same output as that of general spline filters to input data without *** value estimated by this method is in agreement with that estimated by the least squares method if no outlier *** order to apply the fast M-estimation method to the spline filter,convolution of weight function is used instead of the inverse *** the input geometry with shear and point-symmetric extensions is pre-processed to prevent the end effect.

关键词： Surface roughness Spline filter Robustness Lower compatibility End effect M-estimation method

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锆诱导的五元环化合物的新合成

化学学报 2001年第12期59卷 2035-2041页

作者：席婵娟 takahashi Tamotsu 清华大学化学系北海道大学触媒化学研究中心 CRESTJST

由锆杂五元环化合物出发合成五元环有机化合物,只要求一个碳单元并且形成两个碳-碳键.从以下四个方面描述了利用锆杂环化物合成五元环有机化合物的新合成方法:(1)CO或RNC的插入反应;(2)与丙炔酸酯的加成反应--两次的Michael加成;(3)与... 详细信息

由锆杂五元环化合物出发合成五元环有机化合物,只要求一个碳单元并且形成两个碳-碳键.从以下四个方面描述了利用锆杂环化物合成五元环有机化合物的新合成方法:(1)CO或RNC的插入反应;(2)与丙炔酸酯的加成反应--两次的Michael加成;(3)与碘代丙烯酸酯或碘代环烯酮的偶联加成反应--先偶联后Michael加成;(4)与酰氯的取代加成反应--先亲核取代后亲核加成.每类反应都含有数个简单反应类型.

关键词：锆杂环化物五元环有机化合物反应机理合成一氧化碳 PNC 插入反应丙炔酸酯加成反应酰氯碘代丙烯酸酯

How to win the ovarian cancer stem cell battle: destroying the roots

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Cancer Drug Resistance 2020年第4期3卷 1021-1033页

作者： Akimasa takahashi Linda Hong Ilana Chefetz The Hormel Institute University of MinnesotaAustinMN 55912USA Department of Obstetrics and Gynecology Shiga University of Medical ScienceOtsuShiga 5202152Japan Department of Obstetrics&Gynecology Division of Gynecologic OncologyLoma Linda University School of MedicineCA 92350USA Masonic Cancer Center MinneapolisMN 55455USA Stem Cell Institute MinneapolisMN 55455USA Department of Obstetrics Gynecology and Women's HealthMinneapolisMN 55455USA

Ovarian cancer has the highest mortality rate among gynecologic *** combination of cytoreductive surgery and chemotherapy is the standard regimen for the treatment of ovarian *** initial treatment is usually effective,but many patients with ovarian cancer experience recurrence,and treatment options for recurrent disease remain *** stem cells(CSCs)are suggested to play an essential role in cancer recurrence after initial ***,they are of great interest as CSCs may also be involved in chemotherapy ***,understanding the characteristics and mechanisms by which CSCs display resistance to therapeutic agents is important to design effective cancer *** this review,we describe and discuss current therapeutic regimens for ovarian cancer,as well as the various CSC markers,association between CSCs and disease progression,correlation of CSCs with poor prognosis,enrichment of CSCs in tumor tissues following repeated chemotherapy cycles,activation of major signaling pathways following chemotherapy,and potential inhibitors that suppress these signaling *** addition,clinical trials evaluating novel targeted therapies to overcome chemotherapy resistance will be *** combination of traditional chemotherapy and CSC-targeted therapy could be an effective and promising anticancer treatment for ovarian *** the biological properties of CSCs and the mechanism of chemotherapy resistance are critical to design and develop new therapeutic strategies to overcome CSC-associated chemotherapy resistance.

关键词： Ovarian cancer platinum resistance cancer stem cell chemotherapy targeted therapy

Nanoengineering of Curved Supramolecular Polymers:Toward Single-Chain Mesoscale Materials

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Accounts of Materials Research 2022年第2期3卷 259-271页

作者： Sougata Datta Sho takahashi Shiki Yagai Department of Applied Chemistry and Biotechnology Graduate School of EngineeringChiba UniversityChiba 263-8522Japan Division of Advanced Science and Engineering Graduate School of Engineering and Institute for Global Prominent Research(IGPR)Chiba UniversityChiba 263-8522Japan

CONSPECTUS:Recently,supramolecular polymers(SPs),which depend on the formation of reversible bonds between monomers,have attracted attention as a class of materials that can overcome the potential environmental problems of conventional polymeric *** development of various supramolecular polymers is important not only for their direct application as materials but also because their unique polymerization processes and dynamic properties have a profound influence on the development of polymeric and small-molecule-based functional *** other words,by limiting the dimensionality of molecular assemblies to one dimension,we can discover the essential aspects of selfassembly and *** particular,supramolecular polymerization,in whichπ-electron-rich planar molecules are stacked one-dimensionally via multiple interactions,is interesting because it gives“π-stacked SPs”with one-dimensional crystal-like *** excellent intrinsic(internal)structural order ofπ-stacked SPs is difficult to observe in higher-order structures that exhibit only a monotonous linear ***,our research has shown that when internal structural order intrinsically generates curvature,the curvature appears as a major feature of the entire polymer *** intrinsic curvature allows the formation of diverse topologies such as toroids,random coils,waves,spirals,and helicoids usingπ-stacked SPs and also allows structural changes at the single-polymer-chain level along a topology-dependent energy *** other words,π-stacked SP-based nanomaterials could enable free control of the structure at the single-polymer-chain *** Account will focus on our research into curved supramolecular polymers(CSPs)during the last five *** are formed by the hydrogen bonding between barbituratecontainingπ-conjugated molecules to produce giant supramolecular *** first give an overview of the molecular design of the monomers required for the formation of CSP

关键词： materials curvature bonds