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Experimental Parameters and the Stability of Sonoluminescing Bubbles

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Chinese Physics Letters 2001年第11期18卷 1523-1526页

作者： LI Liang-Liang AN Yu YING chong-fu Department of Physics Tsinghua UniversityBeijing 100084 Department of Material Science and Engineering Tsinghua UniversityBeijing 100084

We have numerically analysed the stability of sonoluminescing bubbles in a relatively wide range of experimental parameters and have determined the stable domains for single-bubble sonoluminescence in the Pa - Ro phase diagrams. We map the phase diagrams when the frequency of the driving pressure f is 26.5 kHz at the ambient pressure Po of 2 and 0.5atm, and for the frequencies 10 and 1 kHz at 1 atm. When the frequency is lowered to 1 kHz, the ambient radius Ro can be as large as 20μm.

关键词： ambient radius bubble

Ab initio Study of the Potential Energy Surface and Product Branching Ratios for Reaction of O（^1D） with C2H5CI

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Chinese Journal of Chemical Physics 2009年第1期22卷 87-96页

作者： chong-fu Song Zhi-mei Tian Quan-xin Li Tian-jing He Department of Chemistry Fuyang Teacher's College Fuyang 236041 China Department of Chemical Physics University of Science and Technology of China Hefei 230026 China

The potential energy surface of O（^1D）＋C2H5Cl reaction was studied using QCISD（T）/6- 311＋＋G（d,p）//MP2/6-31G（d,p） method. The calculations reveal an insertion-elimination mechanism. The insertion reaction of O（^1D） and C2H5Cl produces two energy-rich intermediates, IM1 and IM2, which subsequently decompose into various products. The calculations of the branching ratios of various products formed through the two intermediates were carried out using RRKM （Rice-Ramsperger-Kassel-Marcus） theory at the collision energies of 0, 20.9, 41.8, 62.7, 83.6, 104.5, and 125.4 kJ/mol. HCl is the main decomposition product for IM1; CH2OH is the main decomposition product for IM2. Since IM1 is more stable than IM2, HCl is probably the main product of the O（^1D）＋C2H5Cl reaction.

关键词： C2H5Cl Branching ratio Rate constant

A hybrid method for extraction of protein-protein interactions from literature

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High Technology Letters 2011年第1期17卷 32-38页

作者：钱伟中 Ungar Lyle Qin Zhiguang fu chong Computer Science and Technology School University of Electronic Science and Technology of China Chengdu 610054 P.R. China Computer Information Science Department University of Pennsylvania PA 19104 USA

In this work, a hybrid method is proposed to eliminate the limitations of traditional protein-protein interactions （PPIs） extraction methods, such as pattern learning and machine learning. Each sentence from the biomedical literature containing a protein pair describes a PPI which is predicted by first learning syntax patterns typical of PPIs from training corpus and then using their presence as features, along with bag-of-word features in a maximum entropy model. Tested on the BioCreAtIve corpus, the PPIs extraction method, which achieved a precision rate of 64%, recall rate of 60%, improved the performance in terms of F1 value by 11% compared with the component pure pattern- based and bag-of-word methods. The results on this test set were also compared with other three extraction methods and found to improve the performance remarkably.

关键词： protein-protein interaction ( PPI) machine learning pattern learning maximum entropy part of speech

A Method to Adjust Dielectric Property of SiC Powder in the GHz Range

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Journal of Materials Science & Technology 2011年第5期27卷 421-425页

作者： Xiaolei Su Jie Xu Zhimin Li Junbo Wang Xinhai He chong fu WanchengZhou College of Mechanical & Electronic Engineering Xi'an Polytechnic University Xi~an 710048 China School of Technical Physics Xidian University Xi'an 710071 China State Key Laboratory of Solidification Processing Northwestern Polyteehnical University Xi'an 710072 China

The SiC powders by AI or N doping have been synthesized by combustion synthesis, using AI powder and NH4Cl powder as the dopants and polytetrafluoroethylene as the chemical activator. Characterization by X-ray diffraction, Raman spectrometer, scanning electron microscopy and energy dispersive spectrometer demonstrates the formation of Al doped SiC, N doped SiC and the AI and N co-doped SiC solid solution powders, respectively. The electric permittivities of prepared powders have been determined in the frequency range of 8.2-12.4 GHz. It indicates that the electric permittivities of the prepared SiC powders have been improved by the pure AI or N doping and decrease by the AI and N co-doping. The paper presents a method to adjust dielectric property of SiC powders in the GHz range.

关键词： Silicon carbide Combustion synthesis Dielectric property

Characterizing structural variants based on graph-genotyping provides insights into pig domestication and local adaption

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Journal of Genetics and Genomics 2024年第4期51卷 394-406页

作者： Xin Li Quan Liu chong fu Mengxun Li Changchun Li Xinyun Li Shuhong Zhao Zhuqing Zheng Key Lab of Agricultural Animal Genetics Breeding and Reproduction of Ministry of Education and Key Laboratory of Swine Genetics and Breeding of Ministry of AgricultureCollege of Animal Science and TechnologyHuazhong Agricultural UniversityWuhanHubei 430070China Institute of Agricultural Biotechnology Jingchu University of TechnologyJingmenHubei 448000China The Cooperative Innovation Center for Sustainable Pig Production WuhanHubei 430070China Hubei Hongshan Laboratory WuhanHubei 430070China

Structural variants(SVs),such as deletions(DELs)and insertions(INSs),contribute substantially to pig genetic diversity and phenotypic *** a library of SVs discovered from long-read primary assemblies and short-read sequenced genomes,we map pig genomic SVs with a graph-based method for re-genotyping SVs in 402 *** results demonstrate that those SVs harboring specific trait-associated genes may greatly shape pig domestication and local *** characterization of SVs reveals that some population-stratified SVs may alter the transcription of genes by affecting regulatory *** identify that the genotypes of two DELs(296-bp DEL,chr7:52,172,101e52,172,397;278-bp DEL,chr18:23,840,143 e23,840,421)located in muscle-specific enhancers are associated with the expression of target genes related to meat quality(FSD2)and muscle fiber hypertrophy(LMOD2 and WASL)in *** results highlight the role of SVs in domestic porcine evolution,and the identified candidate functional genes and SVs are valuable resources for future genomic research and breeding programs in pigs.

关键词： Pigs Structural variation Selection signatures Regulatory elements

A chaos and fractal theory based nonlinear dynamical model for China stock market

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通讯和计算机（中英文版） 2007年第8期4卷 1-5页

作者： WANG Zhao fu chong School of Finance Dongbei University of Finance and Economics Dalian 116025 China School of Information Science and Engineering Northeastern University Shenyang 110004 China

Applications of HPLC/MS in the analysis of traditional Chinese medicines

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Journal of Pharmaceutical Analysis 2011年第2期1卷 81-91页

作者： Miao Li Xiao- Fang Hou Jie Zhang Si-Cen Wang Qiang fu Lang- chong He School of Medicine Xi'an Jiaotong University Xi'an 710061 China

In China, traditional Chinese medicines （TCMs） have been used in clinical applications for thousands of years. The successful hyphenation of high-performance liquid chromatography （HPLC） and mass spectrometry （MS） has been applied widely in TCMs and biological samples analysis. Undoubtedly, HPLC/MS technique has facilitated the understanding of the treatment mechanism of TCMs. We reviewed more than 350 published papers within the last 5 years on HPLC/MS in the analysis of TCMs. The present review focused on the applications of HPLC/MS in the component analysis, metabolites analysis, and pharmacokinetics of TCMs etc. 50% of the literature is related to the component analysis of TCMs, which show that this field is the most popular type of research. In the metabolites analysis, HPLC coupled with electrospray ionization quadrupole time-of-flight tandem mass spectrometry has been demonstrated to be the powerful tool for the characterization of structural features and fragmentation behavior patterns. This paper presented a brief overview of the applications of HPLC/MS in the analysis of TCMs. HPLC/MS in the fingerprint analysis is reviewed elsewhere.

关键词： traditional Chinese medicines (TCMs) HPLC/MS component analysis metabolites analysis pharmacokinetics

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与月份及预警有关的广东省台风动态风险研究

系统工程理论与实践 2015年第6期35卷 1604-1616页

作者：郭君黄崇福艾福利北京师范大学地表过程与资源生态国家重点实验室北京100875 民政部/教育部减灾与应急管理研究院北京100875 匹兹堡大学灾害管理中心匹兹堡pa15260

本文将自然灾害动态风险分析基本原理应用于台风动态风险研究,以广东省为案例表述了动态风险因综合环境和内在属性的变化而变化.仅以月份不同及有无预警,就能说明台风风险确有动态性.本文采用信息扩散技术估计概率分布和构造脆弱性曲线... 详细信息

本文将自然灾害动态风险分析基本原理应用于台风动态风险研究,以广东省为案例表述了动态风险因综合环境和内在属性的变化而变化.仅以月份不同及有无预警,就能说明台风风险确有动态性.本文采用信息扩散技术估计概率分布和构造脆弱性曲线,计算年度台风灾损率期望值作为风险值.结果表明,广东省一年内不同月份的台风风险水平不同.在台风季节,6月份风险水平最低,9月份最高;台风预警机制,对台风风险水平影响较大.该项研究对台风灾害的应急管理,有一定的参考价值.

关键词：动态风险信息扩散台风广东省应急管理

治理现代化、审批改革与营商环境:改革成效与政策启示

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经济体制改革 2020年第1期 5-12页

作者：廖福崇复旦大学国际关系与公共事务学院上海200433

治理体系和治理能力现代化对"放管服"改革提出了新的要求,优化营商环境和激发市场主体活力对于经济结构换挡升级具有十分显著的作用。本文基于数据分析发现,审批制度改革有效地减少了注册公司的时间、成本和步骤,极大地提升了企业获得... 详细信息

治理体系和治理能力现代化对"放管服"改革提出了新的要求,优化营商环境和激发市场主体活力对于经济结构换挡升级具有十分显著的作用。本文基于数据分析发现,审批制度改革有效地减少了注册公司的时间、成本和步骤,极大地提升了企业获得执照和许可的便利程度。研究发现,审批制度改革主要是通过提高法治化水平来优化营商环境。实现治理现代化,深入推进"放管服"改革,需要全面实施负面清单制度和提高市场监管的法治化水平,持续优化政务服务。

关键词：治理现代化审批制度改革营商环境政务服务