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Lithium Ion Transport Environment by Molecular Vibrations in Ion-Conducting Glasses

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Energy & Environmental Materials 2024年第3期7卷 133-142页

作者： Hiroki Yamada koji Ohara Satoshi Hiroi Atsushi Sakuda Kazutaka lkeda Takahiro Ohkubo Kengo Nakada Hirofumi Tsukasaki Hiroshi Nakajimai Laszlo Temleitner Laszlo Pusztai Shunsuke Ariga Aoto Matsuo Jiong Ding Takumi Nakano Takuya Kimura Ryo Kobayashi Takeshi Usuki Shuta Tahara koji Amezawa Yoshitaka Tateyama Shigeo Mori Akitoshi Hayashi Diffraction and Scattering Division Japan Synchrotron Radiation Research Institute(JASRI)1-1-1 KoutoSayo-choSayo-gun Hyogo 679-5198Japan Faculty of Materials for Energy Shimane University1060Nishi-Kawatsu-ChoMatsue Shimane 690-8504Japan Department of Applied Chemistry Graduate School of EngineeringOsaka Metropolitan University1-1 Gakuen-choSakaiOsaka 599-8531Japan Institute of Materials Structure Science High Energy Accelerator Research Organization(KEK)203-1 ShirakataTokai-muraNaka-gunlbaraki 319-1106Japan Graduate School of Engineering Chiba University 1-33 Yayoi-cho Inage-kuChiba 263-8522Japan Department of Materials Science Graduate School of EngineeringOsaka Metropolitan University1-1 Gakuen-choSakaiOsaka 599-8531Japan Wigner Research Centre for Physics Konkoly Thegeút 29-33 H-1121Budapest Hungary International Research Organisation of Advanced Science and Technology(IROAST) Kumamoto University2-39-1 KurokamiChuo-kuKumamoto 860-8555Japan Department of Applied Physics Nagoya Institute of TechnologyGokisoShowaNagoya 466-8555Japan Faculty of Science Yamagata University1-4-12 KojirakawaYamagata-shiYamagata 990-5860Japan Faculty of Science University of the Ryukyus1 SenbaruNishihara-choOkinawa 903-0213Japan Institute of Multidisciplinary Research for Advanced Materials Tohoku University2-1-1 KatahiraAoba-kuSendai 980-8577Japan Center for Green Research on Energy and Environmental Materials(GREEN)and International Center for Materials Nanoarchitectonics(MANA) National Institute for Materials Science(NIMS)TsukubaIbaraki 305-0044Japan

Controlling Li ion transport in glasses at atomic and molecular levels is key to realizing all-solid-state batteries,a promising technology for electric *** this context,Li_(3)PS_(4)glass,a promising solid electrolyte candidate,exhibits dynamic coupling between the Li^(+)cation mobility and the PS_(4)^(3-)anion libration,which is commonly referred to as the paddlewheel *** addition,it exhibits a concerted cation diffusion effect(i.e.,a cation-cation interaction),which is regarded as the essence of high Li ion ***,the correlation between the Li^(+)ions within the glass structure can only be vaguely determined,due to the limited experimental information that can be ***,this study reports that the Li ions present in glasses can be classified by evaluating their valence oscillations via Bader analysis to topologically analyze the chemical *** is found that three types of Li ions are present in Li_(3)PS_(4)glass,and that the more mobile Li ions(i.e.,the Li3-type ions)exhibit a characteristic correlation at relatively long distances of ***,reverse Monte Carlo simulations combined with deep learning potentials that reproduce X-ray,neutron,and electron diffraction pair distribution functions showed an increase in the number of Li3-type ions for partially crystallized glass structures with improved Li ion transport *** results show order within the disorder of the Li ion distribution in the glass by a topological analysis of their ***,considering the molecular vibrations in the glass during the evaluation of the Li ion valences is expected to lead to the development of new solid electrolytes.

关键词： electrolytes ionic conductors modeling molecular dynamics

A novel shaft-less double suction mini pump

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Science China(Technological Sciences) 2010年第1期53卷 105-110页

作者： nishi Michihiro Kyushu Institute of Technology Sensui-cho 1TobataKitakyushu 804-8550Japan

A novel double suction shaft-less mini pump was developed for heat control of small energy systems in this *** mini pump impeller with an exit diameter of 40 mm was combined with the motor rotor supported by the hybrid dynamic *** specific speed of the pump was 125 min-1 m3 min-1 *** hydraulic performance of the pump was investigated experimen-tally under four rotational *** the test results,it was recognized that the pump could provide a flow discharge of 5 L/min and head of 1.5 m,which are applicable for the heat control system of a 3 kW fuel cell.A three-dimensional turbulent flow simulation in the pump was also conducted near the design *** numerical results showed that the average hydraulic performance of the mini pump was predicted *** the internal flow simulation,it was revealed that the favorable inflow condition upstream of impeller inlet could be attained by applying the double suction shaft-less design for the mini pump.

关键词： double suction seal-less shaft-less uniform inflow mini pump

ELASTOMERIC SEISMIC-PROTECTION ISOLATORS FOR BUILDINGS AND BRIDGES

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Chinese Journal of Polymer Science 2013年第1期31卷 50-57页

作者： Toshio nishi Nobuo Murota International Division Tokyo Institute of Technology Department of Seismic Isolation &Vibration Control Development

A giant earthquake of magnitude 9.0 occurred in Pacific Ocean off of Tohoku District Japan on March 11,2011. The highest seismic intensity of 7 in JMA scale was recorded in miyagi. In the Tohoku district, around 230 buildings are seismically isolated （hereafter, SI） mainly by elastomeric isolators （seismic rubber bearings）. According to the official survey reports by several organizations （for example）, the records of those buildings have verified the effectiveness of the seismic isolation. The response acceleration of the SI buildings was reduced by 30% to 50% of the input ground acceleration. Additionally, the difference of the conditions inside the room between SI and the fixed-base buildings was obvious as well as the damage in main structures of the buildings. The displacements of the isolators by the earthquake were around 200 mm according to the records of the instruments. As a result, the performance of SI buildings and the elastomeric isolators in the Tohoku District -- Off the Pacific Ocean Earthquake 2011 were excellent, and the efficiency of the seismic isolation was verified by the records of many buildings in wide area.

关键词： Elastomeric isolator Seismic isolation Rubber bearing.

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铁路三维电子沙盘搭建及其应用研究

铁道标准设计 2024年第8期68卷 50-57页

作者：赵亮亮董凤翔黄旎诗中铁二院工程集团有限责任公司成都610031

为解决目前铁路行业电子沙盘存在的表达方式不一、应用内容单一、数据泄露风险大、数据加载效率低等问题,研究海量地理地质及BIM模型的数据处理、管理和应用方法,建立以BIM+GIS为技术核心的标准化电子沙盘,从而更好地服务于铁路设计和... 详细信息

为解决目前铁路行业电子沙盘存在的表达方式不一、应用内容单一、数据泄露风险大、数据加载效率低等问题,研究海量地理地质及BIM模型的数据处理、管理和应用方法,建立以BIM+GIS为技术核心的标准化电子沙盘,从而更好地服务于铁路设计和建造。根据鲁南高铁、拉林铁路、成渝中线高铁等项目实践总结,在中国铁路BIM联盟和国铁集团相关标准基础上提出了面向电子沙盘应用的地形、影像、BIM模型、专题图的数据制作标准,从坐标转换、数据转换、数据切片、知识图谱建立、模型发布、前端数据汇集的方法完成了电子沙盘的搭建。最后,在电子沙盘中实现了百公里级、多专业数据的在线高效组织和管理,提出的方法和标准适用于铁路设计、建设过程的管理和分析应用。

关键词：铁路 BIM GIS 智能化电子沙盘专题图高效组织

Study on Performance and Flow Field of an Undershot Cross-Flow Water Turbine Comprising Different Number of Blades

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Journal of Thermal Science 2017年第5期26卷 413-430页

作者： Yasuyuki nishi Kentaro Hatano Terumi Inagaki Department of Mechanical Engineering Ibaraki University 4-12-1 Nakanarusawa-cho Hitachi-shi Ibaraki 316-8511JAPAN Graduate School of Science and Engineering Ibaraki University 4-12-1 Nakanarusawa-cho Hitachi-shi Ibaraki316-8511 JAPAN

Recently, small hydroelectric generators have gained attention as a further development in water turbine technology for ultra low head drops in open channels. The authors have evaluated the application of cross-flow water turbines in open channels as an undershot type after removing the casings and guide vanes to substantially simplify these water turbines. However, because undershot cross-flow water turbines are designed on the basis of cross-flow water turbine runners used in typical pipelines, it remains unclear whether the number of blades has an effect on the performance or flow fields. Thus, in this research, experiments and numerical analyses are employed to study the performance and flow fields of undershot cross-flow water turbines with varying number of blades. The findings show that the turbine output and torque are lower, the fluctuation is significantly higher, and the turbine efficiency is higher for runners with 8 blades as opposed to those with 24 blades.

关键词： Water Turbine Cross-Flow Turbine Free Surface Performance Flow Field Number of Blades

Study on the Rotor Design Method for a Small Propeller-Type Wind Turbine

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Journal of Thermal Science 2016年第4期25卷 355-362页

作者： Yasuyuki nishi Yusuke Yamashita Terumi Inagaki Department of Mechanical Engineering Ibaraki University Graduate School of Science and Engineering Ibaraki University

Small propeller-type wind turbines have a low Reynolds number,limiting the number of usable airfoil ***,their design method is not sufBciently established,and their performance is often *** ultimate goal of this research is to establish high-performance design guidelines and design methods for small propeller-type wind *** that end,we designed two rotors:Rotor A,based on the rotor optimum design method from the blade element momentum theory,and Rotor B,in which the chord length of the tip is extended and the chord length distribution is *** examined performance characteristics and flow fields of the two rotors through wind tunnel experiments and numerical *** results revealed that the maximum output tip speed ratio of Rotor B shifted lower than that of Rotor A,but the maximum output coefficient increased by approximately 38.7%.Rotors A and B experienced a large-scale separation on the hub side,which extended to the mean in Rotor *** difference in separation had an impact on the significant decrease in Rotor A's output compared to the design value and the increase in Rotor B's output compared to Rotor A.

关键词： Wind Turbine Propeller-Type Horizontal Axis Blade Element Momentum Theory Rotor Design Method

STRUCTURE AND DYNAMICS OF POLYMERIC MATERIALS IN NANO-SCALE

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Chinese Journal of Polymer Science 2011年第1期29卷 43-52页

作者： Toshio nishi So Fujinami Ken Nakajima WPI Advanced Institute for Materials Research Tohoku University

The nano-palpation technique, i.e., nanometer-scale elastic and viscoelastic measurements based on atomic force microscope, is introduced. It is demonstrated to be very useful in analyzing nanometer-scale materials properties for the surfaces and interfaces of various types of soft materials. It enables us to obtain not only structural information but also mechanical information about a material at the same place and at the same time.

关键词： Nano-palpation Atomic force microscope Soft material Young's modulus Viscoelasticity.

NUMERICAL STUDY OF FLOW IN CONICAL DIFFUSER WITH VORTEX GENERATOR JETS

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Chinese Journal of Mechanical Engineering 2007年第1期20卷 5-9页

作者： LIU Xiaomin nishi Michihiro School of Energy and Power Engineering Xi＇ an Jiaotong University xi’an 710049 China Mechanical Engineering Department Kyushu Institute of Technology Kitakyushu 804-8550 Japan

To develop vortex generator jet （VGJ） method for flow control, the turbulence flow in a 14° conical diffuser with and without vortex generator jets are simulated by solving Navier-Stokes equations with k-ε turbulence model. The diffuser performance, based on different velocity ratio （ratio of the jet speed to the mainstream velocity）, is investigated and compared with the experimental study. On the basis of the flow characteristics using computation fluid dynamics （CFD） method observed in the conical diffuser and the downstream development of the longitudinal vortices, attempt is made to correlate the pressure recovery coefficient with the behavior of vortices produced by vortex generator jets.

关键词： Vortex generator jet (VGJ) Flow control Longitudinal vortex Numerical simulation

Approach to reducing the effect of bone-coal power station on radiation environment

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Nuclear Science and Techniques 2002年第4期13卷 264-269页

作者： nishi－Ying GUPei－Long 等 StateEnvironmentalProtectionAdministrationRadiationEnvironmentalMonitoringTechnicalCenter Hangzhou310012 StateEnvironmentalProtectionAdministrationRadiationEnvironmentalMonitoringTech

The effect of two bone-coal power stations(6MWe) on environment was investigated within the scope of the dose contribution caused by various radionucildes in different *** is found that the best measures to reduce the effect of bone-coal power station on radiation environment include to select a fine boiler system and a comprehensive utilization of the bone-coal cinder(BCC),soot and ash in the catchers.

关键词：天然燃料骨炭粉末站辐射环境