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Earthquake Barcode from a Single-Degree-of-freedom System

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Natural Science 2015年第1期7卷 18-31页

作者： Chein-Shan Liu Chih-Wen chang Department of Civil Engineering National Taiwan University Taipei Taiwan Cloud Computing and System Integration Division National Center for High-Performance Computing Taichung Taiwan

Earthquake is a violent and irregular ground motion that can severely damage structures. In this paper we subject a single-degree-of-freedom system, consisting of spring and damper, to an earthquake excitation, and meanwhile investigate the response behavior from a novel theory about the dynamical system, by viewing the time-varying signum function of It can reflect the characteristic property of each earthquake through and the second component of f, where is a time-sampling record of the acceleration of a ground motion. The barcode is formed by plotting with respect to time. We analyze the complex jumping behavior in a barcode and an essential property of a high percentage occupation of the first set of dis-connectivity in the barcode from four strong earthquake records: 1940 El Centro earthquake, 1989 Loma earthquake, and two records of 1999 Chi-Chi earthquake. Through the comparisons of four earthquakes, we can observe that strong earthquake leads to large percentage of the first set of dis-connectivity.

关键词： Earthquakes Single-Degree-of-freedom System Signum function Barcode jumping Behavior The first Set of Dis-Connectivity Scale Invariance

The Application of Negative and Positive Words and Phrases in Chinese Negation Expressions

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journal of Literature and Art Studies 2022年第8期12卷 849-854页

作者： CAO chang-li ZHANG Shun-sheng College of foreign Languages University of Shanghai for Science and Technology200093ShanghaiP.R.of China

Negation is a ubiquitous phenomenon in all *** Chinese,there are a good number of such negative expressions as“fēi(非)”,“bu(不)”,“méi(没)”,“mò(莫)”,“bié(别)”,“wèi(未)”,“wú(无)”,“wù(勿)”,“fiào(覅)”,“béng(甭)”,“fǒu(否)”,and“miǎn(免)”as well as phrases with one of *** paper is intended to explore the application of negation in Chinese in two ways:(1)People express positive meanings with negative words or phrases;(2)People express negative meanings with positive words or *** linguistic data employed in this paper come from real life,microblogs,variety shows,short videos,and some hǎobùexpressions from three of China’s four classic novels.

关键词： negation negative expressions linguistic data study

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双脉冲固体发动机铝膜隔板设计和试验研究

固体火箭技术 2013年第2期36卷 190-194页

作者：石瑞王长辉苌艳楠北京航空航天大学宇航学院北京100191

提出了带有刻痕的铝膜隔板及其组件的设计方法,对铝膜隔板结构进行设计数值分析和试验研究。对不同厚度和刻痕深度的铝膜隔板进行了耐压和破裂试验,并对试验结果进行了分析。研究表明,带有支架的铝膜隔板具有第一脉冲耐压,第二脉冲破裂... 详细信息

提出了带有刻痕的铝膜隔板及其组件的设计方法,对铝膜隔板结构进行设计数值分析和试验研究。对不同厚度和刻痕深度的铝膜隔板进行了耐压和破裂试验,并对试验结果进行了分析。研究表明,带有支架的铝膜隔板具有第一脉冲耐压,第二脉冲破裂的特性,能满足脉冲发动机隔板的要求。隔板的刻痕中心处为应变最大区域,二脉冲时铝膜隔板从中间薄弱处破裂爆开,满足定向破裂的要求。数值计算和试验都表明,刻痕处的隔板厚度一定时,二脉冲破裂压强随着隔板厚度增加而增加,而刻痕处的隔板厚度对二脉冲破裂压强大小起着决定性的作用。

关键词：固体火箭发动机双脉冲发动机铝膜隔板多次启动

The Role of Special Economic Zones in Enhancing Enterprise’s Export Structures:The Perspective of Industry Complexity

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Contemporary Social Sciences 2019年第6期4卷 68-81页

作者： chang Zihao Lan Wenting Wen Yi Tsinghua China Data Center School of Economics and Management Tsinghua University Institute of Education Tsinghua University 不详

Special economic zones(SEZs)help provide the momentum for China’s economic *** paper studies the influence of SEZs on enterprise’s export structures from the perspective of production complexity using data from the China Industry Business Performance Database(CIBPD)collected between 2000 and *** found that enterprises in SEZs have a higher export propensity and volume due to more ***,enterprises with more complexity outside SEZs show a higher export propensity and volume depending on the number of SEZs near them and the radiation effect of the ***,high and new-tech industrial development zones perform more prominently in this regard.

关键词： special economic zones complexity of the production process export structure

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试论城乡社区基本公共服务均等化的法律构建

首都师范大学学报（社会科学版） 2016年第5期 50-57页

作者：饶常林常健华中师范大学公共管理学院华中师范大学法学院

随着城市社区建设的蓬勃开展,农村社区建设中公共服务供给总量不足、供给结构失衡的问题进一步凸显,落后的农村公共服务与农村居民日益增长的物质文化需求之间矛盾也日益突出。城乡社区建设离不开法律,以实现城乡基本公共服务均等化为... 详细信息

随着城市社区建设的蓬勃开展,农村社区建设中公共服务供给总量不足、供给结构失衡的问题进一步凸显,落后的农村公共服务与农村居民日益增长的物质文化需求之间矛盾也日益突出。城乡社区建设离不开法律,以实现城乡基本公共服务均等化为核心价值取向,构建城乡一体的社区法律制度,通过法律引导加强农村基本公共服务建设,是解决这一矛盾的有效手段。通过确立借鉴经验逐步推进,城乡互动,对农村地区适当倾斜保护以及政府推动为主、农村居民参与为辅等原则,同时构建和完善城乡统一的基本法律体系、财政转移支付制度、农村居民公共服务需求表达机制、政府基本公共服务绩效评价体系等措施,促进农村居民与城市居民享有相同的公共服务,共享改革开放的成果。

关键词：农村社区公共服务公共服务均等化农村社区法律

Microwave-assisted catalytic oxidative desulfurization of gasoil fuel using synthesized CuO-ZnO nanocomposites

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燃料化学学报 2019年第9期47卷 1075-1082页

作者： Mustafa H.fadhil Saad H.Ammar Marwa f.Abdul jabbar Chemical Engineering Department Al-Nahrain University

Recently, organosulfur removal from liquid petroleum fuels is very significant aspect of environment protecting and fuel cell requests. Therefore, improved approaches to remove sulfur are still essential. In the present work, a simple catalytic oxidative desulfurization (CODS) system for Iraqi gasoil fraction has been successfully developed using CuO-ZnO nanocomposites as catalysts, and H 2O 2 as oxidant under microwave irradiation. The main reaction parameters influencing sulfur conversion including microwave power, irradiation time, catalyst dosage and H 2O 2 to gasoil volume ratio have been investigated. The CuO-ZnO nanocomposites was synthesized with different weight ratios and characterized by XRD, fE-SEM, AfM and BET surface area methods. The results reveal that, high sulfur conversion (93%) has been achieved under suitable conditions of microwave CODS as follows: microwave power of 540 W, irradiation time of 15 min, catalyst dosage of 8 g/L (0.4 g), and H 2O 2 ∶gasoil volume ratio of 0.3. The catalyst reusability shows that the synthesized catalyst can be reused five times without an important loss in its activity.

关键词： microwave oxidative desulfurization nanocomposites catalyst gasoil

Solid-State Interfacial Reaction between Eutectic Au-Ge Solder and Cu/Ni(P)/Au Metalized Ceramic Substrate and Its Suppression

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journal of Materials Science & Technology 2015年第5期31卷 445-452页

作者： f.Q.Lang H.Yamaguchi H.Nakagawa H.Sato Advanced Power Electronics Research Center(ADPERC) National Institute of Advanced Industrial Science and Technology(AIST).Central 21-1-1UmezonoTsukubaIbaraki 305-8568.Japan

Eutectic Au-12 Ge solder was employed to bond the SiC power devices to a Si3N4/Cu/Ni（P）/Au multilayered *** high-temperature reliability of the bond was investigated in detail at 200,250,300 and 330 ℃,*** and Ni5Ge3intermetallic compounds（IMCs） were identified at the Au-12Ge/Ni（P） interface by micro X-ray diffraction（μXRD） and scanning electron microscopy（SEM）equipped with energy dispersive X-ray analysis（EDX）.The growth of the Ni-Ge IMCs was dominated by Ni5Ge3layer,which formed at the Ni5Ge3/NiGe interface by outward diffusion of Ni from the Ni（P） *** activation energy of the total Ni-Ge IMCs growth was 66 kj/*** shear strength of the bond was tested at both 25 ℃ and the aging temperatures,*** shear strength decreased slightly after aging at 200 and 250 ℃.The shear strength tested at 250 ℃ was 46 MPa after aging at 250 ℃ for 3000 *** shear strength aged at 300 and 330 ℃ rapidly decreased with aging time due to the rapid growth of the *** slow down the interfacial reaction between the high temperature solder and the Ni（P）layer,an approximately 200 nm-thick Ta/TaN/Ta new diffusion barrier（DB） was deposited on the *** by transmission electron microscopy（TEM） equipped with EDX,reveals that the Ta/TaN/Ta DB was bonded well to the Ni（P） layer and the *** temperature storage test at 330 ℃ for1500 h reveals that the bond of the SiC devices maintained its high shear strength of approximately56 MPa without *** new DB effectively suppressed the interfacial reaction between the Au-12 Ge solder and the Ni（P） layer of the substrate.

关键词： High-temperature solder Interfacial reaction Activ

Biodegradation behavior of micro-arc oxidation coating on magnesium alloy-from a protein perspective

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Bioactive Materials 2020年第2期5卷 398-409页

作者： Zhao-Qi Zhang Li Wang Mei-Qi Zeng Rong-chang Zeng M.Bobby Kannan Cun-Guo Lin Yu-feng Zheng Corrosion Laboratory for Light Metals College of Material Science and EngineeringShandong University of Science and TechnologyQingdao266590China State Key Laboratory for Marine Corrosion and Protection Luoyang Ship Material Research InstituteQingdao266101China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou450002China Biomaterials and Engineering Materials(BEM)Laboratory College of ScienceTechnology and EngineeringJames Cook UniversityTownsville4811Australia State Key Laboratory for Turbulence and Complex Systems and Department of Materials Science and Engineering College of EngineeringPeking UniversityBeijing100871China

Protein exerts a critical influence on the degradation behavior of absorbable magnesium(Mg)-based ***,the interaction mechanism between protein and a micro-arc oxidation(MAO)coating on Mg alloys remains ***,a MAO coating was fabricated on AZ31 Mg *** its degradation behavior in phosphate buffer saline(PBS)containing bovine serum albumin(BSA)was investigated and compared with that of the uncoated *** morphologies and chemical compositions were studied using field-emission scanning electron microscope(fE-SEM),fourier transform infrared spectrophotometer(fT-IR)and X-ray diffraction(XRD).The degradation behavior of the bare Mg alloy and its MAO coating was studied through electrochemical and hydrogen evolution *** assay was applied to evaluate the biocompatibility of Mg alloy substrate and MAO *** indicated that the presence of BSA decreased the degradation rate of Mg alloy substrate because BSA(RCH(NH2)COO‾)molecules combined with Mg2+ions to form(RCH(NH2)COO)2Mg and thus inhibited the dissolution of Mg(OH)2 by impeding the attack of Cl‾*** the case of MAO coated Mg alloy,the adsorption of BSA on MAO coating and the formation of(RCH(NH2)COO)2Mg exhibited a synergistic effect and enhanced the corrosion resistance of the coated alloy ***,cell bioactive assay suggested that the MAO coating had good viability for MG63 cells due to its high surface area.

关键词： Magnesium alloy Protein Degradation Micro-arc oxidation Biocompatibility

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中医药在防治肿瘤中的作用和地位

中国中西医结合杂志 2007年第5期27卷 390-391页

作者：凌昌全中国人民解放军第二军医大学中医系中国人民解放军中医肿瘤研究所上海200433

由于环境污染加剧、营养失衡、人口老龄化以及激烈竞争下生活压力增大等因素,目前全世界恶性肿瘤的发病率越来越高。现代医学治疗肿瘤的外科方法不断改进,新药与新的治疗手段也层出不穷,如何从中医药学中积极探索新理论、开创新方法、... 详细信息

由于环境污染加剧、营养失衡、人口老龄化以及激烈竞争下生活压力增大等因素,目前全世界恶性肿瘤的发病率越来越高。现代医学治疗肿瘤的外科方法不断改进,新药与新的治疗手段也层出不穷,如何从中医药学中积极探索新理论、开创新方法、提高临床疗效更是受到越来越多的重视。这里仅就中医药在肿瘤防治中的作用和地位谈几点思考,以与同行商榷。[第一段]

关键词：恶性肿瘤中医药学肿瘤防治医学治疗人口老龄化环境污染营养失衡生活压力