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EFFECT OF A VISCOUS LIQUID LAYER ON THE TRANSVERSE SURFACE WAVES IN TRANSVERSELY PIEZOELECTRIC MATERIALS WITH UNATTACHED ELECTRODE

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EFFECT OF A VISCOUS LIQUID LAYER ON THE TRANSVERSE SURFACE W...

Gravity and magnetic field feature for archaeology in site of the Emperor Qinshihuang Mausoleum,china

2010全国压电和声波理论及器件技术研讨会

作者： Feng JIN~1,Peng LI~1,Zheng-hua QIAN~2 1 MOE Key Laboratory for Strength and Vibration,school of Aerospace,Xi'an jiaotong university Xi'an,Shaanxi 710049,P.R.{3. 2 Department of Mechanical and environmental Informatics,Tokyo Institute of Technology Tokyo 152-8550,Japan

The propagation of the transverse surface waves in an unbounded piezoelectric half-space with a viscous liquid layer between the half-space surface and an unattached electrode is *** exact dispersion relation is obtained from the equations of the linear theory of *** show that the wave speed is sensitive to the viscous coefficient,the mass density and the dielectric permittivity of the fluid layer. Especially,the phase velocity changes linearly with the increasing mass density when other parameters keep constant,which can be used to manipulate the behavior of the waves and has implications in acoustic wave devices.

关键词： Transverse surface waves a viscous liquid layer dispersion relation

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Gravity and magnetic field feature for archaeology in site o...

The 4th International Conference on environmental and engineering Geophysics

作者： Bingqiang Yuan~1 Shiyi Liu~2 Guoming yu~2 Mingsheng Yang~3.Qingbo Duan~4 1.school of Petroleum Resources Xi’an Shiyou university Xi’an 710065 china 2.Center of Development and Research Chinese Geological Survey Beijing 10003. china 3.The Second Integrated Geophysical Exploration Brigade Exploration and Empolder Bureau of Geological and Mineral Resources Shaanxi Province Xi’an 710016 china 4.school of Archaeology and Museumology Northwestern university Xi’an 710069 china

＜正＞The Emperor Qinshihuang Mausoleum is abundant in the cultural relics at surface and underground and the kinds of cultural heritage sites are *** than 600 accompanying pits, tombs and ancient construction sites with different shape and different size have been discovered, a large numbers of those relics are still not be found at *** method validity has been tested on those sites known using high precision gravity and magnetic survey,which are for to explore the distribution of underground relics,to provide the proof in protecting such an important cultural relic in science and to choose geophysical prospecting method and technology being fit to existing character in the *** test results have showed that the range of ancient construction base site can be confirmed and the underground distribution can be conjectured by using high precision gravity *** is valid to explore the accompanying pits burned and also to find the accompanying tombs by using high precision magnetic *** test results have yet provided the foundation to explore the similar cultural relics in the Emperor Qinshihuang Mausoleum area in future.

关键词： Emperor Qinshihuang Mausoleum accompanying pits and tombs construction base gravity and magnetic field

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混合型多层基板的电磁兼容性研究

上海交通大学学报 2007年第S2期41卷 58-61页

作者：许海峰谢扩军朱琳杨先玮电子科技大学物理电子学院成都610054

混合型多芯片组件(MCM-C/D)是一种高级类型的多芯片组件,它具有非常好的电气性能.随着集成电路逐渐朝小型化、高密度、高速度方向发展,随之产生的互连线间的电磁干扰和信号延迟问题日趋严重,很大程度上制约了多芯片组件的快速发展.通过... 详细信息

混合型多芯片组件(MCM-C/D)是一种高级类型的多芯片组件,它具有非常好的电气性能.随着集成电路逐渐朝小型化、高密度、高速度方向发展,随之产生的互连线间的电磁干扰和信号延迟问题日趋严重,很大程度上制约了多芯片组件的快速发展.通过建立MCM-C/D的封装模型,依靠CST微波仿真软件来研究信号线间的电磁干扰,通过分析仿真结果来优化基板的布局和电路走线.

关键词：混合型多芯片组件聚酰亚胺印刷电路板电磁兼容掩埋微带线

城市水域景观定量研究——以上海世博会水域为例

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西南民族大学学报（自然科学版） 2009年第5期35卷 1081-1086页

作者：刘琼英欧阳林全华四川乐山职业技术学院四川乐山614000 西南交通大学四川成都610031 上海财经大学国际工商管理学院上海200433

许多城市依水而生,因水而兴,城市水域具有重要而特殊的景观价值.本文在实地调查的基础上,借鉴相关学科定量思路,试探性地采用数学方法,给难以定量的水域景观,进行定量,以科学而客观的数据,研究城市水域景观的密度、丰度、储量与品质等问... 详细信息

许多城市依水而生,因水而兴,城市水域具有重要而特殊的景观价值.本文在实地调查的基础上,借鉴相关学科定量思路,试探性地采用数学方法,给难以定量的水域景观,进行定量,以科学而客观的数据,研究城市水域景观的密度、丰度、储量与品质等问题,并提出上海世博会不同水域功能区景观提升对策.

关键词：城市水域景观定量

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生态旅游中的环境污染问题及防治对策研究

四川环境 2004年第1期23卷 34-37页

作者：段文霞肖猛李光跃陈放四川大学生命科学学院成都610064 四川省农业管理干部学院成都610071

近年来随着生态旅游逐渐成为旅游业中的热点的同时,也不断暴露出一些问题。本文通过对多个旅游景点的调查,重点分析了目前生态旅游中存在的环境污染问题,并提出了相应的防治对策。

关键词：生态旅游环境污染防治对策

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用指纹图谱评价环境样本DNA的提取效果

微生物学通报 2003年第4期30卷 32-35页

作者：田扬捷杨虹李道棠虞茜上海交通大学生命科学与技术学院上海200240

研究了DNA指纹图谱技术在评价环境样本DNA提取效果方面的应用。采用 3.DNA提取方法提取垃圾渗滤水和活性污泥中的微生物DNA ,并用ARDRA和RISA图谱加以评价。实验结果表明。

关键词： DNA提取微生物多样性 16S rDNA ARDRA RISA

爆炸荷载作用下桥梁动态响应及其损毁过程的数值模拟

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四川大学学报（工程科学版） 2011年第6期43卷 15-19,97页

作者：陈华燕曾祥国朱文吉廖异唐光武四川大学建筑与环境学院四川成都610065 重庆交通科研设计院重庆400067

桥梁的设计通常考虑了地质和气候等环境条件,但并没有考虑结构抗爆方面的设计要求。利用大型通用有限元软件LS-DYNA 3.对连续刚构桥在爆炸荷载作用下的动力响应进行数值计算,分析过程中考虑了空气冲击波的传播特性。通过调整炸药的位置... 详细信息

桥梁的设计通常考虑了地质和气候等环境条件,但并没有考虑结构抗爆方面的设计要求。利用大型通用有限元软件LS-DYNA 3.对连续刚构桥在爆炸荷载作用下的动力响应进行数值计算,分析过程中考虑了空气冲击波的传播特性。通过调整炸药的位置和重量,得到了爆炸荷载作用下刚构桥跨中的位移响应、跨中Von-Mises应力分布和结构破坏形态,模拟了桥梁承受爆炸后的坍塌过程,引入Tuler-Butcher损伤模型,求得了特定单元的损伤累积曲线。这些计算方法和结论可以为工程实际提供参考。

关键词：爆炸动态响应损伤容限数值分析

Origin and Spread Identification of Escherichia Coli Aerosol of Swine House Surroundings Using ERIC-PCR and REP-PCR

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High-performance aqueous symmetric sodium-ion battery using NASICON-structured Na2VTi（PO4）3

2012年环境污染与大众健康学术会议

作者： Huiyong Duan 1,2 , Tongjie Chai 1 , Dunjiang Liu 1 1 College of Animal science and Veterinary Medicine, Shandong Agricultural university, Sino-German Cooperative Research Centre for Zoonoses of Animal Origin of Shandong Province, Tai’an, china, 271018 State {3. Protection Key Laboratory of Microorganism Application and Risk Control, Tsinghua university, Beijing, china, 100084 2 College of Animal Husbandry and Veterinary Medicine, Jining Agricultural school, Jining, Shandong, china, 272100

Evidence is mounting that microorganisms originating from livestock impact the air quality of the animal houses themselves and contribute to their neighborhood of the public. The aim of this study was to develop efficient bacterial source tracking capabilities to identify sources of Escherichia coli aerosol pollution caused by pigs. Airborne E. coli were isolated from indoor air, upwind air （10 and 50 m away） and downwind air samples （10, 50, 100, 200 and 400 m away） for five swine houses using six-stage Andersen microbial samplers and RCS （Reuter-Centrifugal samplers）. E. coli strains from pig fecal samples were also collected simultaneously. The enterobacterial repetitive intergenic consensus polymerise chain reaction （ERIC-PCR） and the repetitive extragenic palindromic （REP-PCR） approaches were used to study the genetic variability and to determine the strain relationships among E. coli isolated from different sites in each swine house. Results showed that 3..1% （20/57） of the bacterial DNA fingerprints from the fecal isolates matched with the corresponding strains isolated from indoor and downwind air samples （similarity ≥ 90%）. E. coli strains from the indoor and downwind air samples were closely related to the E. coli strains isolated from feces, while those isolated from upwind air samples （house C） had low similarity （61% - 69%）. Our results suggest that some strains isolated from downwind and indoor air originated in the swine feces. Effective hygienic measures should be taken in animal farms to prevent or minimize the downwind spread of microorganism aerosol.

关键词： Source identification Swine house Airborne Escherichia coli ERIC-PCR REP-PCR.

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Nano Research 2018年第1期11卷 490-498页

作者： Hongbo wang Tianran Zhang Chao Chen Min Ling Zhan Lin Shanqing Zhang Feng Pan chengdu Liang Zhejiang Provincial Key Laboratory of Advanced Chemical engineering Manufacture Technology College of Chemical and Biological Engineering Zhejiang University Hangzhou 310027 China Department of Mechanical engineering National University of Singapore Singapore 117576 Singapore College of Light Industry and Chemical engineering Guangdong University of Technology 6uangzhou 510006 China Centre for Clean Environment and Energy Environmental Futures Research Institute and Griffith School of Environment Gold Coast Campus Gfiffith University QLD 4222 Australia school of Advanced Materials Peking University Shenzhen Graduate School Shenzhen 518055 China

A high-safety and low-cost route is important in the development of sodium-ion batteries, especially for large-scale stationary battery systems. An aqueous sodium-ion battery is demonstrated using a single NASICON-structured Na2VTi（PO4）3.material with the redox couples of V4＋/V3. and Ti4＋/Ti3. working on the cathode and anode, respectively. The symmetric full cell fabricated based on the bi-functional electrode material exhibits a well-defined voltage plateau at ~ 1.2 V and an impressive cycling stability with capacity retention of 70% exceeding 1,000 cycles at 10C （1C = 62 mA.g-1）. This study provides a feasible strategy for obtaining high-safety and low-cost rechargeable batteries using a single active material in aqueous media.

关键词： Na2VTi(PO4) 3 aqueous symmetric sodium-ion batteries