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小波变换在振动台信号处理中的应用

沈阳工业学院学报 2003年第3期22卷 53-55页

作者：贾明涛王永臣沈阳工业学院信息科学与工程分院辽宁沈阳110168

介绍振动台的工作原理,提出一种利用信号边沿与噪声的小波变换的不同性质来去噪的方法,给出该方法的使用效果,并进行了讨论.

关键词：小波变换振动台信号处理噪声小波函数控制系统

Impact of virus genotype on interferon treatment of patients with chronic hepatitis C: a multicenter controlled study

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Hepatobiliary & Pancreatic Diseases International 2004年第3期3卷 369-374页

作者： Yao Xie, Dao-Zhen Xu, Zhi-Meng Lu, Kang-Xian Luo, Ji-Dong jia, Yu-ming wang,Gui-Zhen Zhao, Shu-Lin Zhang and Da-Zhi Zhang Department of Infeetious Diseases , Beijing Ditan Hos-pital, Beijing 100011 , China Department of Infec-tious Diseases, Ruijin Hospital, Shanghai 200025, China De-partment of Infectious Diseases, Naifang Hospital, First Military Medical U-niversity, Guangzhou 510515, China (Luo KX) Center of Liver Disease,Beijing Friendship Hospital, Beijing 100050, China (jia J D ) Institute ofInfectious Disease, Southwest Hospital, Third Military Medical University,Chongqing 410032, China Department of Infectious Disea-ses, Second Hospital, China Medical University, Shenyang 110004, China Department of Infectious Diseases, First Hospital, Xi’ an jiao-tong University, Xi’ an 710061 , China ) Liver Disease Centerof Chongqing, Second Hospital, Chongqing Medical University,Chongqing 410010, China Department of Infectious Diseases Beijing Ditan Hospital Beijing 100011 China. xieyao@***

BACKGROUND: Some factors have been reported to besassociated with a greater likelihood of sustained viral re-sponse ( SVR) in the interferon (IFN) treatment of chronichepatitis C. The factors include HCV genotype, HCVRNA level in serum, state of liver disease, baseline bodyweight, age, sex, and race. The aim of this trial was to in-vestigate the influence of HCV genotype on the IFN treat-ment of patients with chronic hepatitis ***: The genotypes of HCV virus were determinedin the patients with chronic hepatitis C from several hospi-tals of China enrolled into the randomized, opened andcontrolled trial of Peg-IFN alpha-2a (pegasys) treatment,controlled with IFN-α-2a (roferon-A). The serum ALTlevels and HCV RNA concentrations of the patients weredetected before and at the end of treatment and during thefollow-up. The influence of HCV genotype on the IFNtreatment of patients with chronic hepatitis C was analyzedin intention-to-treat (ITT) ***: The HCV genotypes of 202 patients were deter-mined. Of these patients, 158(78.22%) were infected withgenotype 1 HCV and 44(21.78%) with genotype *** viral response at the end of treatment (ETVR) andsustained viral response (SVR) rates were 53.80% and25.32% respectively in patients with genotype 1 HCV, butthey were 61.36% and 43.18% in patients with genotypenon-1. The difference of SVR between patients with geno-type 1 HCV and those with genotype non-1 was significant(P =0.021). After being grouped by the used drugs, theETVR rates of patients infected with genotype 1 and non-1HCV were 76.83% and 80.95% in the patients treated withpegasys (P =0.686); but their SVR rates were 35.37% and66.67% (P =0. 01). The viral relapse rate of genotype 1HCV (55.56%) was significantly higher than that of geno-type non-1 HCV (23.53%) (P=0.02). In roferon-A group,the ETVR and SVR rates of patients with genotype 1 HCVwere 28.95% and 14.47% respectively, which were lowerbut not more significant than those of patients with ge

关键词： hepatitis C virus genotype chronic hepatitis C interferon PEG-IFN

A study of novel real-time power balance strategy with virtual asynchronous machine control for regional integrated electric-thermal energy systems

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Science China(Technological Sciences) 2024年第7期67卷 2074-2086页

作者： wang Rui LI ming-jia wang YiBo SUN QiuYe ZHANG Pinjia College of Information Science and Engineering Northeastern UniversityShenyang 110819China School of Mechanical Engineering Beijing Institute of TechnologyBeijing 100081China Department of Electrical Engineering Tsinghua UniversityBeijing 100084China

The development of regional integrated electric-thermal energy systems(RIETES) is considered a promising direction for modern energy supply systems. These systems provide a significant potential to enhance the comprehensive utilization and efficient management of energy resources. Therein, the real-time power balance between supply and demand has emerged as one pressing concern for system stability operation. However, current methods focus more on minute-level and hour-level power optimal scheduling methods applied in RIETES. To achieve real-time power balance, this paper proposes one virtual asynchronous machine(VAM) control using heat with large inertia and electricity with fast response speed. First, the coupling timescale model is developed that considers the dynamic response time scales of both electric and thermal energy systems. Second, a real-time power balance strategy based on VAM control can be adopted to the load power variation and enhance the dynamic frequency response. Then, an adaptive inertia control method based on temperature variation is proposed, and the unified expression is further established. In addition, the small-signal stability of the proposed control strategy is validated. Finally, the effectiveness of this control strategy is confirmed through MATLAB/Simulink and HIL(Hardware-in-the-Loop) experiments.

关键词： regional integrated electric-thermal energy systems real-time power balance virtual asynchronous machine adaptive inertia small-signal stability

Mainchain Semifluorinated Polymers with Ultra High Molecular Weight via Reaction-enhanced Reactivity of Intermediate(RERI) Mechanism

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Chinese Journal of Polymer Science 2023年第5期41卷 760-767,I0009页

作者： jia-Sheng Wu wang-Meng Hou Zhi-jia Liu Yi Shi Yong-ming Chen School of Materials Science and Engineering Key Laboratory for Polymeric Composite and Functional Materials of Ministry of EducationSun Yat-Sen UniversityGuangzhou 510006China

Achieving the linear polymers with high molecular weight via step-growth polymerization of A2 and B2 monomers is significantly limited by the requirement of strict stoichiometry of two monomers when the reactivity of A and B groups are not changed during the ***,a unique step-growth polymerization based on copper-catalyzed azide-alkyne cycloaddition(CuAAC)with reactionenhanced reactivity of intermediate(RERI)mechanism was developed for the preparation of mainchain semifluorinated polymers with high molecular *** CuAAC polymerization of bis-alkynyl-terminated fluorinated monomers(A2)and 2,2-bis(azidomethyl)propane-1,3-diyl bis(2-methylpropanoate)(BiAz,B2)with RERI effect at different stoichiometric ratio was systematically *** results indicated that the semifluorinated polymers with ultrahigh molecular weight,Mw,MALLS>106 g/mol,could be efficiently synthesized by using excess molar of BiAz *** resultant high-molecular-weight semifluorinated polymers show good thermostability and high *** addition,the glass transition temperature(Tg)of these mainchain semifluorinated polymers could be tuned conveniently due to the bis-alkynyl-terminated comonomers could be consumed completely when excessive BiAz monomers were used in this this step-growth polymerization.

关键词： Semifluorinated polymers Click polymerization Step-growth polymerization

不同荷载作用下五边形石墨烯的变形破坏机理研究

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原子与分子物理学报 2025年第6期42卷 51-57页

作者：赵泽若韩同伟李仁葛峻铭王嘉越江苏大学土木工程与力学学院镇江212013

五边形石墨烯是一种完全由碳五元环组成的准二维的亚稳态碳结构,在不同载荷作用下其变形破坏机理仍需进一步研究.本文基于ReaxFF反应力场采用分子动力学方法模拟研究了五边形石墨烯的拉伸、剪切和纳米压痕破坏过程,得到了五边形石墨烯... 详细信息

五边形石墨烯是一种完全由碳五元环组成的准二维的亚稳态碳结构,在不同载荷作用下其变形破坏机理仍需进一步研究.本文基于ReaxFF反应力场采用分子动力学方法模拟研究了五边形石墨烯的拉伸、剪切和纳米压痕破坏过程,得到了五边形石墨烯的拉伸和剪切应力-应变曲线以及压入载荷-位移曲线,系统分析了五边形石墨烯的变形破坏机理,并验证了五边形石墨烯在不同载荷作用下是否表现出塑性变形特征的一致性问题.研究结果表明,通过拉伸或纳米压入等不同加载方式均可准确测出五边形石墨烯的本征力学性能参数,其杨氏模量265.4~285.1 N/m,与第一性原理计算结果一致.研究还发现,五边形石墨烯在拉伸、剪切和纳米压痕过程中均会出现不可逆的塑性变形特征,而引起塑性变形的原因是由于不可逆的碳五元环向碳多元环结构的转变.以上研究结果可为基于五边形石墨烯的微/纳米机电系统的实际应用提供重要指导.

关键词：五边形石墨烯变形破坏机理分子动力学

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Merging bound states in the continuum in an open acoustic resonator

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 124-131页

作者： Lujun Huang Bin jia Artem S.Pilipchuk Sibo Huang Chen Shen Almas F.Sadreev Yong Li Andrey E.Miroshnichenko School of Physics and Electronic Sciences East China Normal University Institute of Acoustics Tongji University L.V.Kirensky Institute of Physics Department of Mechanical Engineering Rowan University School of Engineering and Technology University of New South Wales at Canberra

Bound states in the continuum （BICs） are perfectly localized resonances despite embedding in the continuum ***,an isolated BIC is very sensitive to the structure ***,we report merging acoustic BICs in a single open resonator,robust against the structure *** find that both symmetry-protected BIC and Friedrich-Wintgen BIC are sustained in a single coupled waveguide-resonator *** varying the height and length of the resonator,these two BICs move toward each other and merge into a single one at a critical *** to an individual BIC,the merged BIC is robust against fabrication error because its Q-factor is proportional to ΔL-4,whereΔL embodies the structure *** essence of this extraordinary phenomenon is perfectly explained by the two-and three-level approximations of the effective nonHermitian ***,we present direct experimental demonstrations of the moving and merging of BICs in a coupled 3D waveguide-resonator,which are evidenced by the vanishing of the linewidth of Fano resonance in the transmission *** results may find exciting applications in designing high-quality acoustic sources,sensors and filters.

关键词： acoustic resonances bound state in the continuum high-Q resonances

Removal of dichloromethane from waste gases by a biotrickling filter

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Journal of Environmental Sciences 2006年第6期18卷 1073-1076页

作者： YU jian-ming CHEN jian-meng wang jia-de College of Biological and Environmental Engineering Zhejiang University of Technology Hangzhou 310032 China

Dichloromethane is harmful to human health and hazardous to atmospheric environment. In this study, two strains were isolated which were identified as Pseudomonas sp. and Mycobacterium sp., and utilized dichloromethane （DCM） as sole carbon and energy sources. The optimal culture conditions were temperature of 28℃ and pH of 6.5 for obtaining the two mixed bacterial strains. The investigation on the purification of DCM-contaminated gas was carried out in a bench-scale biotrickling filter which was inoculated with the two strains and operated under these optimal conditions. The DCM removal efficiencies varied between 72% and 99% in the biotrickling filter when empty-bed residence time was 9.6 s with the inlet concentrations ranged fi＇om 0.7 to 3.12 g/m^3 under the conditions ofpH of 6.5 ±0.5 and temperature of 28℃. It was also found that NaCl accumulation in the broth would inhibit the DCM biodegradation dramatically when the accumulated NaCl concentration was over 35.1 g/L.

关键词： dichloromethane biodegradation biotrickling filter air pollution control

Effects of material damping on flag flutter

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Science China(Technological Sciences) 2014年第1期57卷 117-127页

作者： CHEN ming jia LaiBing wang SiYing YIN XieZhen Department of Modern Mechanics University of Science and Technology of China Changjiang River Scientific Research Institute

Complex interactions of plates with ambient fluid are common in daily lives,*** flapping in wind,aerofoils oscillating in ***,the feasibility to harvest energy using the flutter motion has been *** objectives of this study are to systematically explore the effects of the material damping on flag flutter,and then to study the energy interchange between the fluid and the *** this study,a two-dimensional model was *** dimensionless parameters govern the system,*** mass ratio between the structure and the fluid,the dimensionless fluid velocity and the dimensionless material *** show that the critical velocity increases with the increase of the material *** oscillation frequency of the flag decreases with the increase of the material damping,and the time-averaged energy dissipation rate initially increases and then *** increase of the material damping causes the transition of the system from a higher frequency oscillating state to a lower frequency oscillating state,and from a chaotic state to a periodic state.

关键词： aerodynamics flow-structure interactions energy harvesting

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霉酚酸酯治疗甲状腺相关性眼病临床对照研究

医学研究生学报 2003年第12期16卷 911-913页

作者：王坚王扬天邵加庆赵明王晓杜宏南京军区南京总医院内分泌科江苏南京210002

目的 :对比霉酚酸酯等几种不同免疫抑制药对甲状腺相关性眼病 (TAO)或称Graves眼病 (Graves′ ,Ophthal mopathy ,GO)的疗效 ,旨在寻求免疫治疗的有效手段。　方法 :将TAO 5 4例 ,分成A、B两大组 ,A组随机采用泼尼松 (1 6例 ,完成治疗... 详细信息

目的 :对比霉酚酸酯等几种不同免疫抑制药对甲状腺相关性眼病 (TAO)或称Graves眼病 (Graves′ ,Ophthal mopathy ,GO)的疗效 ,旨在寻求免疫治疗的有效手段。　方法 :将TAO 5 4例 ,分成A、B两大组 ,A组随机采用泼尼松 (1 6例 ,完成治疗者 1 3例 )或雷公藤总甙 (TⅡ ,1 5例 )治疗 ;B组随机采用霉酚酸酯 (MMF ,1 2例 )或环孢素 (CsA ,1 1例 )治疗 ,疗程 1 2周。疗效判断采用改良Given Wilson积分指数系统 ,设定积分下降或上升≥ 3分为好转或恶化 ,0 .0 5 )。各组治疗后眼病分值均有一定程度下降 (P 5 % ,2例血糖增高 ,停药后血糖恢复 ,该组共 3例退出治疗 ,其他各组无因药物不良反应而中途退出者。MMF组未发现有明确的药物不良反应。　结论 :新型免疫抑制药MMF用于治疗Graves眼病疗效优于CsA 。

关键词：甲状腺相关性眼病免疫治疗霉酚酸酯