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Nighttime enhancement of the amplitude of geomagnetic sudden commencements

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Nighttime enhancement of the amplitude of geomagnetic sudden...

第十一届全国日地空间物理学术讨论会

作者： t.araki K.Keika t.Kamei SOA Key Laboratory for Polar Science Polar Research Institute of China 200129ShangHai Data Analysis Center for Geomagnetism and Space MagnetismGraduate School of ScienceKyoto UniversityKyoto 606-8502Japan Department of Earth and Planetary Science Graduate School of Science Kyoto UniversityKyoto 606-8502Japan Data Analysis Center for Geomagnetism and Space Magnetism Graduate School of Science Kyoto UniversityKyoto 606-8502Japan

＜正＞It is usually considered that geomagetic sudden commencements （SCs） observed in low and middle latitudes take the maximum amplitude around noon. this is reasonable if the enhanced magnetopause and tail current were the main source of the SCs. We present here the following results of the analysis showing that the maximum amplitude actually occur around midnight in low and middle latitudes except the equator.

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the coupling of perturbations in the solar wind density to global Pi3 pulsations:A case study

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The coupling of perturbations in the solar wind density to g...

第十二届全国日地空间物理学术讨论会

作者： t．araki M．W．Dunlop M．Nose t．Iyemori K．Yumoto SOA Key Laboratory for Polar Science Polar Research Institute of ChinaShanghaiChina Space Sciences Division SSTDRutherford Appleton LaboratoryChiltonDIDCOTOxfordshireUK Data Analysis Center for Geomagnetism and Space Magnetism Graduate School of ScienceKyoto UniversityKyotoJapan Space Environment Research Center Kyushu UniversityFukuokaJapan

＜正＞A typical Pi3 pulsation is examined by magnetic field measurements from multiple satellites and ground ***-latitude ground observations with a wide longitudinal span indicate that the amplitude of the Pi3 pulsation peaks on the dayside and is gradually decreasing towards the *** effect and the fact that the wave phase on the dayside leads that on the nightside,imply that the source of the Pi3 lies

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the Conjugacy of Long Periodic Auroral Luminosity Pulsations

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The Conjugacy of Long Periodic Auroral Luminosity Pulsations

1997年中国地球物理学会第十三届学术年会

作者： t．araki N．Sato t．Kamei t．Iyemori A．Kadokura H．Minatoya Faculty of Science Kyoto Univ National Institute of Polar Research Faculty of Science Kyoto Univ Faculty of Science Kyoto Univ National Institute of Polar Research University of Electro-Communications

＜正＞Auroral luminosity pulsation so far observed on the ground may be divided mainly into two *** first occurs in common sense within pulsating patches with period of 2- 20sec,of which the characteristics were well ...

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并发C:一种适合于分布式多处理机系统程序设计语言

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计算机工程与应用 1986年第1期 29-39页

作者： Y.tSUJINO M.ANDO t.araki N.tOKURA 吉凤岗

当今硬件技术的发展使人们能容易地构成经济的多微处理机系统。本文介绍一种适合于分布式系统的新程序设计语言(并发C)。这种分布式系统是由具特有的局部存贮器的处理机松散连接的网络系统。并发C是程序设计语言C的扩充版本,增加了并行... 详细信息

当今硬件技术的发展使人们能容易地构成经济的多微处理机系统。本文介绍一种适合于分布式系统的新程序设计语言(并发C)。这种分布式系统是由具特有的局部存贮器的处理机松散连接的网络系统。并发C是程序设计语言C的扩充版本,增加了并行处理和进程间通信性能。

关键词：多处理机分布式系统进程间通信程序设计语言消息传递机制并发程序设计共享变量管程并行处理网络系统

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午后多重极光弧观测研究

极地研究 2005年第4期17卷 255-263页

作者：温艳波杨惠根韩德胜 t.araki 艾勇刘瑞源刘勇华胡泽骏陈卓天邓忠新刘嵘王晶中国极地研究中心武汉大学电子信息学院

本文利用2001—2003年南极中山站175天全天空摄像机观测,对午后多重极光弧的出现率及其与Kp指数的关系进行了统计分析,结果表明午后多重极光弧出现率呈一单峰分布,最大发生率出现在1445Ut(1645MLt),其位置在1500MLt极光热点(1300—1700M... 详细信息

本文利用2001—2003年南极中山站175天全天空摄像机观测,对午后多重极光弧的出现率及其与Kp指数的关系进行了统计分析,结果表明午后多重极光弧出现率呈一单峰分布,最大发生率出现在1445Ut(1645MLt),其位置在1500MLt极光热点(1300—1700MLt)近夜侧的部分。与地磁活动指数Kp的相关统计分析表明,Kp值为2—3之间时多重极光弧有较大的出现率,这说明中等地磁活动情形下午后多重极光弧有较高的出现率。事件分析表明多重极光弧的强度变化与地磁Pc5脉动具有较高的相关性,并且有类似的频谱特征,这说明午后多重极光弧可能与同时出现的Pc5地磁脉动有关。

关键词：午后极光多重极光弧 Kp指数中山站

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成人正常胸腺Ct表现与年龄、性别、BMI及吸烟的相关性

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国际医学放射学杂志 2016年第2期 199-200页

作者： t.araki M.Nishino W.Gao J.Dupuis G.M.Hunninghake t.Murakami 姚柳清 Department of Radiology Center for Pulmonary Functional Imaging Brigham and Women’s Hospital Harvard Medical School

摘要目的探讨胸腺大小和Ct表现与受试者特征的相关性。方法评估2 540例可能健康的受试者(平均年龄58.9岁,51%为女性)的胸腺在Ct上的评分(根据胸腺脂肪和软组织的比率的四分评分法)、胸腺大小和形态与受试者年龄、性别、体质量指数(BMI)... 详细信息

摘要目的探讨胸腺大小和Ct表现与受试者特征的相关性。方法评估2 540例可能健康的受试者(平均年龄58.9岁,51%为女性)的胸腺在Ct上的评分(根据胸腺脂肪和软组织的比率的四分评分法)、胸腺大小和形态与受试者年龄、性别、体质量指数(BMI)和吸烟史的相关性。结果 2 540例受

关键词：胸腺女性受试者淋巴组织 BMI 脂肪变性相关性 Ct 性别

1995年兵库县南部地震时观测的同震地磁变化

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世界地震译丛 1998年第3期29卷 72-80页

作者： t.Iyemori t.Kamei Y.tanaka M.takeda t.Hashimoto t.araki t.Okamoto K.Watanabe N.Sumitomo N.Oshiman 吕苑苑中国地震局地球物理研究所

在离1995年兵库县南部地震(M=7.2)震源区近100km的两个台上观测到脉冲式的同震地磁变化。在该主震时其最大幅度为0.6～1.0nt,而持续时间为20～30s。在发震时刻及其之后17s地震波到达观测点之前,这些变化看来就已经开始了。对余震的叠加... 详细信息

在离1995年兵库县南部地震(M=7.2)震源区近100km的两个台上观测到脉冲式的同震地磁变化。在该主震时其最大幅度为0.6～1.0nt,而持续时间为20～30s。在发震时刻及其之后17s地震波到达观测点之前,这些变化看来就已经开始了。对余震的叠加时间分析亦揭示了类似的地磁变化,尽管其幅度比主震时小一个量级。作为这种同震地磁变化的可能原因,讨论了地壳电动机制。

关键词：日本兵库地震观测同震地磁变化地震波震源

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Verification and Validation of High-Resolution Inviscid and Viscous Conical Nozzle Flows

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Communications on Applied Mathematics and Computation 2024年第1期6卷 533-549页

作者： Luciano K.araki Rafael B.de R.Borges Nicholas Dicati P.da Silva Chi-Wang Shu Department of Mechanical Engineering Federal University of ParanáCuritiba81531-980ParanáBrazil Mathematics and Statistics Institute Rio de Janeiro State UniversityRio de Janeiro20550-900Rio de JaneiroBrazil Department of Mechanical Engineering State University of MaringáMaringá87020-900ParanáBrazil Division of Applied Mathematics Brown UniversityProvidenceRI02912USA

Capturing elaborated flow structures and phenomena is required for well-solved numerical *** finite difference methods allow simple discretization of mesh and model ***,they need simpler meshes,e.g.,*** inverse Lax-Wendroff(ILW)procedure can handle complex geometries for rectangular ***-resolution and high-order methods can capture elaborated flow structures and *** also have strong mathematical and physical backgrounds,such as positivity-preserving,jump conditions,and wave propagation *** perceive an effort toward direct numerical simulation,for instance,regarding weighted essentially non-oscillatory(WENO)***,we propose to solve a challenging engineering application without turbulence *** aim to verify and validate recent high-resolution and high-order *** check the solver accuracy,we solved vortex and Couette ***,we solved inviscid and viscous nozzle flows for a conical *** employed the finite difference method,positivity-preserving Lax-Friedrichs splitting,high-resolution viscous terms discretization,fifth-order multi-resolution WENO,ILW,and third-order strong stability preserving *** showed the solver is high-order and captured elaborated flow structures and *** can see oblique shocks in both nozzle *** the viscous flow,we also captured a free-shock separation,recirculation,entrainment region,Mach disk,and the diamond-shaped pattern of nozzle flows.

关键词： High-resolution Compressible Navier-Stokes Free-shock separation Nozzle flow

Preparation of microparticles and nanoparticles using membrane-assisted dispersion,micromixing,and evaporation processes

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Particuology 2024年第1期84卷 30-44页

作者： Goran t.Vladisavljevic Chemical Engineering Department Loughborough UniversityLoughboroughLeicestershire LE113TUUnited Kingdom

Synthetic microporous membranes are increasingly used for energy-efficient and controlled production of micro-and nanoparticles and micro-and nanoemulsions with tuneable morphology and physico-chemical properties through various micromixing,emulsification,and evaporation *** emul-sification processes,the membrane pores are used for dispersed phase injection and size-controlled generation of droplets and droplet-templated *** micromixing processes,membrane is utilised as a micromixer for mixing two miscible liquids,usually solvent and antisolvent-rich solutions,which leads to the creation of supersaturation and subsequent nanoprecipitation or *** mem-brane evaporation processes,membrane is used to prevent phase dispersion while allowing efficient molecular diffusion of solvent and/or antisolvent vapour through gas-filled *** dispersion processes can be operated continuously by decoupling shear stress on the membrane surface from cross flow using tube insets,flow pulsations,swirling flow,membrane oscillations or membrane *** generation and solidification can be performed continuously in a single pass by connecting membrane module with a downstream *** dispersion processes can be used for pro-duction of nanoparticles such as nanovesicles(liposomes,micelles,ethosomes,and niosomes),nanogels,polymeric,lipid and metallic nanoparticles,and *** main advantages of membrane-assisted particle generation are in low energy consumption,controlled geometry and hydrodynamic conditions at the microscale level,flexible throughput due to modular and scalable design of membrane devices,and a wide choice of available microporous membranes with various wall porosities,wetta-bilities,pore sizes,and pore morphologies to suit different applications.

关键词： Nanoparticles Microparticles Nanoemulsions Microemulsions Microporous membrane Crystallisation Flash nanoprecipitation Emulsification Zero liquid discharge