检索结果-南通市图书馆

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第11期7卷 1856-1863页

作者： CHE Ai-lan IWATATE Takahiro oda yoshiya GE Xiu-run School of Naval Architecture Ocean and Civil Engineering Shanghai Jiao Tong University Shanghai 200030 China Department of Civil and Environmental Engineering To~o Metropolitan University Tokyo 192-0397 Japan Department of Civil Engineering Xi ＇an Jiaotong Universitv Xi ＇an 710049. China

The dynamic characteristics of ground soil using micro-tremor observation in Asia (Zushi and Ogasawara (Japan), Xi’an (China), Manila (Philippines), and Gujarat (India)) are studied. Ground micro-tremor signals were observed and analyzed by fast Fourier transform method (FFT). The response of ground soil to frequency of ground micro-tremor is revealed, and func- tions with frequency-dependence and frequency-selection of micro-tremor for different foundation soil strata are also researched. The horizontal to vertical spectral ratio (H/V, Nakamura technique) of micro-tremor observed at the surface ground was used to evaluate the site’s predominant period. This paper also discusses the application of micro-tremor on site safety evaluation, and gives the observed calculation results obtained at multiple points. The experimental foundation and the deduction process of the method are described in detail. Some problems of the method are pointed out. Potential use of the technique’s good expandable nature makes it a useable means for preventing and reducing disaster’s harmful effects.

关键词： Micro-tremor observation Nakamura method Predominant period Earthquake observation Spectral analysis

在线全文

学校读者我要写书评

暂无评论

论岩土材料屈服准则的基本特性和创新

岩石力学与工程学报 2007年第9期26卷 1745-1757页

作者：俞茂宏刘继明 oda yoshiya 高江平西安交通大学土木工程系陕西西安710049

从岩土材料的基本力学性能出发,讨论岩土材料屈服准则的基本特性和屈服准则的创新。根据国内外学者的大量实验结果,岩土材料屈服准则的基本特性为:拉压异性(SD)效应、正应力效应、静水应力效应、中间主应力效应、中间主剪应力效应、双... 详细信息

从岩土材料的基本力学性能出发,讨论岩土材料屈服准则的基本特性和屈服准则的创新。根据国内外学者的大量实验结果,岩土材料屈服准则的基本特性为:拉压异性(SD)效应、正应力效应、静水应力效应、中间主应力效应、中间主剪应力效应、双剪应力正应力效应、双剪应力围压效应、应力角效应(应力偏张量第三不变量效应)和屈服面的外凸性。屈服准则应该满足这些基本特性,Tresca准则不符合这些条件,Mohr-Coulomb理论只能够满足部分条件,Drucker-Prager准则不能满足应力角效应。屈服准则的创新应该满足科学创新的3个要素:(1)新,前所未有;(2)比原来的准则更好;(3)能够实施、便于实际应用。总结各种力学单元体模型的发展,并以一个新的力学模型为依据,对统一强度理论补充一个拉伸破坏条件,它类似于Mohr-Coulomb准则的拉伸截断。从而将统一强度理论扩展到三向拉伸区,更能适用于岩土材料和岩土工程,也使统一强度理论在理论上更趋完整。

关键词：岩土工程岩土材料屈服准则破坏准则统一强度理论拉伸截断条件

The Seismic Characteristics of Surface Ground of Zushi-Site during the 2011 off the Pacific Coast of Tohoku Earthquake

在线全文

学校读者我要写书评

暂无评论

Journal of Geological Resource and Engineering 2014年第4期2卷 208-216页

作者： Takahiro Iwatate Nobuyuki Naito Koji Ando yoshiya oda Professor Emeritus Department of Civil Engineering Graduate School of Engineering Tokyo Metropolitan University ~ SeniorResearch Adviser Chishitsu Keisoku Co. Ltd 1-1Minamiosawa Hachioji Tokyo 192-0397 Japan ARK Information Systems Inc. 3-22-17 Shinyokohama Kohoku-ku Yokohama 222-0033 Japan Vibrant System Development Co. Ltd. 5-39-16 Nangai Higashiyamato-shi Tokyo 207-0014 Japan Department of Civil and Environmental Engineering Tokyo Metropolitan University 1-1Minamiosawa Hachioji Tokyo192-0397Japan

In Tokyo Metropolitan University, the horizontal and vertical array earthquake observations has begun in June 1994 at the five stations （kl-k5） on the ground surface and bedrock （k6：-30 m depth） at Zushi-site. More than 200 medium and small earthquakes with the magnitude 5.0-7.3 were recorded between 1994 and 2012. At the 2011 off the Pacific coast of Tohoku Earthquake （EQ.3.11 M = 9.0）, the largest surface ground acceleration （kl = 124.5 gal, k6 = 45.5 gal） of the horizontal component was recorded. Main results were obtained as follows：（1） the surface ground motion characteristics of Zushi-site were examined using the observed data （kl ＆ k6） of EQ.3.11, the past-observed smaller earthquakes （EQ.1 ＆ EQ.10.08） and aftershock （EQ.12.3）, respectively. The non-liner seismic response characteristics of the surface ground at Zushi-site were verified during EQ.3.11. （2） The ground structure models were examined and identified by the modal analyses and the FEM （finite element method） identification analyses using the observed acceleration data of EQ.3.11 and the past observed smaller earthquakes. （3） Moreover, the three dimensional seismic response analyses were performed by TDAPUl （time domain 3-dimensional dynamic analysis program）, using k6 for input motions and identified ground structure model, and evaluated the dynamic behaviours of the surface ground. The calculated results agreed well with the observed ones.

关键词： The 2011 offthe Pacific coast of Tohoku earthquake Zushi-site earthquake observation identification analysis seismic response analysis.

Egg White Protein-Bonded Columns and Their Applications

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

色谱 2000年第6期18卷 508-517页

作者： yoshiya oda (Laboratory of Seeds Finding Technology, Eisai Co. Ltd, Tsukuba Ibaraki 300 2635, Japan) Laboratory of Seeds Finding Technology Eisai Co .Ltd 日本 TsukubaIba 3002635

Egg white protein bonded columns were developed for HPLC. These columns can be used under aqueous mobile phase and separate various kinds of drug enantiomers. Hyphenated techniques using protein bonded columns with LC/MS and/or column switching have been recognized as integral methods in pharmaceutical research to analyze drug enantiomers. Therefore, these methods are very useful for research fields of pharmacokinetics and pharmacology.

关键词：蛋清蛋白质键合柱 HPLC LC/MS

在线全文

学校读者我要写书评

暂无评论

中国古建筑结构力学研究进展

力学进展 2006年第1期36卷 43-64页

作者：俞茂宏 oda Y 方东平赵均海张德良竺润祥车爱兰西安交通大学西安710049 清华大学北京100084 长安大学西安710061 中国科学院力学研究所北京100080 宁波大学宁波315211 上海交通大学上海200030

中国古代建筑是中国古代文化的宝贵遗产。力学的多样性也反映在古建筑结构力学研究。西安交通大学从1982年开始,对以西安明代箭楼、城楼和宁波宋代保国寺等国家重点保护文物为代表的木结构建筑,以唐代大雁塔、小雁塔等国家重点保护文物... 详细信息

中国古代建筑是中国古代文化的宝贵遗产。力学的多样性也反映在古建筑结构力学研究。西安交通大学从1982年开始,对以西安明代箭楼、城楼和宁波宋代保国寺等国家重点保护文物为代表的木结构建筑,以唐代大雁塔、小雁塔等国家重点保护文物为代表的古代高层建筑,和以国家重点保护文物西安古城墙为代表的砖-土结构以及钟楼、鼓楼等中国城市的代表性古建筑的结构力学特性进行了一系列研究。得到关于古建筑结构(如斗拱、结构非线性、榫卯节点的接触力学特性、地宫、古代夯土、古塔基础、古城墙等)力学特性的新认识。本文对此进行小结,同时也介绍近年来的其它学者的一些研究。

关键词：古建筑结构力学结构非线性结构模型试验西安古城墙古塔木结构斗拱

Cubic anvil cell apparatus for high-pressure and low-temperature physical property measurements

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2018年第7期27卷 100-106页

作者： Jin-Guang Cheng Bo-Sen Wang Jian-Ping Sun yoshiya Uwatoko Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190China Institute for Solid State Physics University of Tokyo5-1-5 KashiwanohaKashiwaChiba 277-8581Japan

We will build a cubic anvil cell （CAC） apparatus for high-pressure and low-temperature physical property measurements in the synergic extreme condition user facility （SECUF）. In this article, we first introduce the operating principle, the development history, and the current status of the CAC apparatus, and subsequently describe the design plan and technical targets for the CAC in SECUF. We will demonstrate the unique advantages of CAC, i.e., excellent pressure homogeneity and large hydrostatic pressure capacity, by summarizing our recent research progresses using CAC. Finally, we conclude by providing some perspectives on the applications of CAC in the related research fields.

关键词： cubic anvil cell high-pressure measurements temperature-pressure phase diagram strongly cor-related electron systems

Can robotic liver resection compensate for weaknesses of the laparoscopic approach?

在线全文

学校读者我要写书评

暂无评论

Hepatobiliary Surgery and Nutrition 2020年第3期9卷 385-387页

作者： Daisuke Ban yoshiya Ishikawa Minoru Tanabe Department of Hepatobiliary and Pancreatic Surgery Graduate School of MedicineTokyo Medical and Dental UniversityTokyoJapan

In the past decade,the induction of minimal invasive surgery(MIS)has revolutionized liver surgery,because this approach greatly improves the clinical course of postoperative patients(1).

关键词： surgery liver clinical

Subclinical synovitis detected by magnetic resonance imaging and ultrasonography following clinical remission in patients with rheumatoid arthritis:A retrospective study

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Rheumatology & Autoimmunity 2021年第1期1卷 9-17页

作者： Masao Nawata Kazuki Someya Takafumi Aritomi Masashi Funada Katsumi Nakamura Kazuyoshi Saito yoshiya Tanaka Department of Clinical Immunology and Rheumatology Tobata General HospitalKitakyushuJapan The First Department of Internal Medicine University of Occupational and Environmental Health JapanKitakyushuJapan Department of Radiology Tobata General HospitalKitakyushuJapan

Background:Subjective residual symptoms persist after clinical remission of rheumatoid arthritis(RA)in Japanese *** studies have examined the relationship between these symptoms and subclinical inflammation using high-sensitivity imaging(musculoskeletal ultrasound[MSUS]and magnetic resonance imaging[MRI]).We examined the relationship between subjective residual symptoms and imaging findings in patients with RA who achieved clinical ***:We enrolled 30 patients with *** primary endpoint was the patients'subjective residual *** secondary endpoint was the relationship between the aforementioned symptoms and imaging ***:Despite a mean Simplified Disease Activity Index of 1.3,imaging evaluation revealed inflammatory *** the multivariate analysis,the Health Assessment Questionnaire Disability Index(HAQ-DI)and pain visual analog scale(VAS)scores were extracted as independent related factors of subjective residual *** stratified analysis according to HAQ-DI showed a significant difference in synovitis on MRI between patients with and without residual disability(12.0±8.7 vs.5.3±5.3,respectively;p=0.0192).However,MSUS scores showed no significant difference in these two *** addition,no significant differences were found in MSUS and MRI scores between patients with and without residual pain ***:Our findings demonstrated residual synovitis related to patientreported outcomes in patients with RA who achieved clinical *** particular,patients with an HAQ-DI score of>0.25 even after achieving clinical remission should be further examined by MRI and/or MSUS for the evaluation of residual synovitis.

关键词： magnetic resonance imaging patient-reported outcome measures remission induction rheumatoid arthritis ultrasonography

Fabrication of Bulk β-FeSi_2 Crystal With ThreeDimensional Alignment by an Oscillating Magnetic Field

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2012年第S1期19卷 183-186页

作者： Noriaki Nakatsuka Keiji Kurokawa Tomoya Nagira Masato yoshiya Hideyuki Yasuda Department of Adaptive Machine Systems Osaka UniversityOsaka 565-0871Japan

It has been reported that an anisotropic magnetic field could produce the three-dimensional alignment of fine single-crystal particles with the orthorhombic crystal ***,the three-dimensional alignment was achieved only in *** of bulk 'single' materials that have the three-dimensional alignment of grains has been *** study proposes a procedure for the fabrication,which consists of slip casting under an oscillating magnetic field and *** of casting and sintering conditions achieved the three-dimensionally aligned bulk β-FeSi_2.

关键词： pseudo single crystal crystallographic orientation magnetic alignment

Emergence of Superconductivity on the Border of Antiferromagnetic Order in RbMn6Bi5 under High Pressure:A New Family of Mn-Based Superconductors

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2022年第6期39卷 58-64页

作者： Peng-Tao Yang Qing-Xin Dong Peng-Fei Shan Zi-Yi Liu Jian-Ping Sun Zhi-Ling Dun yoshiya Uwatoko Gen-Fu Chen Bo-Sen Wang Jin-Guang Cheng Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190China Institute for Solid State Physics University of TokyoKashiwaChiba 277-8581Japan

We report the discovery of superconductivity on the border of antiferromagnetic order in a quasi-one-dimensional material RbMn_(6)Bi_(5)via measurements of resistivity and magnetic susceptibility under high *** phase diagram of temperature versus pressure resembles those of many magnetism-mediated superconducting *** increasing pressure,its antiferromagnetic ordering transition with T_(N)=83K at ambient pressure is first enhanced moderately and then suppressed completely at a critical pressure of P_(c)≈13GPa,around which bulk superconductivity emerges and exhibits a dome-like T_(c)(P)with a maximal T_(c)^(onset)≈9.5K at about *** addition,the superconducting state around P_(c) is characterized by a large upper critical fieldμ_(0)H_(c2)(0)exceeding the Pauli paramagnetic limit,implying a possible unconventional paring *** present study,together with our recent work on KMn_(6)Bi_(5)(the maximum T_(c)^(onset)≈9.3 K),makes AMn_(6)Bi_(5)(A=alkali metal)a new family of Mn-based superconductors with relatively high T_(c).

关键词： critical ferromagnetic exceeding