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2008-2016年嘉兴市性传播疾病监测结果分析

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中国农村卫生事业管理 2018年第3期38卷 312-314页

作者：查亦薇孙炀明富小飞周晚玲浙江省嘉兴市疾病预防控制中心浙江嘉兴314050

目的:了解嘉兴市2008-2016年性传播疾病的流行特征,为今后防控工作提供依据。方法:对2008-2016年报告的梅毒、淋病、生殖器疱疹、尖锐湿疣和生殖道沙眼衣原体感染等5种性传播疾病的病例资料数据进行统计分析。结果:2008-2016年,嘉兴市... 详细信息

目的:了解嘉兴市2008-2016年性传播疾病的流行特征,为今后防控工作提供依据。方法:对2008-2016年报告的梅毒、淋病、生殖器疱疹、尖锐湿疣和生殖道沙眼衣原体感染等5种性传播疾病的病例资料数据进行统计分析。结果:2008-2016年,嘉兴市共报告5种性传播疾病监测病例71 117例,年均发病率为181.45/10万;性传播疾病的发病率整体呈现下降趋势(χ_(趋势)~2=1 089.49,P<0.05);年龄为20~49岁组所占比重较高,占总报告病例数的32.64%;女性性传播疾病的总发病率高于男性,差异具有统计学意义(χ~2=132.04,P<0.05);在病例的职业构成中,农民和工人所占比例较高,分别占总病例的39.42%和23.27%;不同县(区)性传播疾病发病率存在统计学差异(χ~2=5 214.04,P<0.05)。结论:中青年人群性行为活跃,是性传播疾病防控重点人群。建议加强宣传和监测力度,针对高危人群开展行为干预,并提供规范的诊疗服务等有效措施,控制性传播疾病的进一步流行。

关键词：性病流行特征分析

Novel approach to GPS/SINS integration for IMU alignment

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Journal of Systems Engineering and Electronics 2011年第3期22卷 513-518页

作者： wei sun Feng sun School of Geomatics Liaoning Technical UniversityFuxin 123000P.R.China College of Automation Harbin Engineering UniversityHarbin 150001P.R.China

Strapdown inertial navigation system（SINS） requires an initialization process that establishes the relationship between the body frame and the local geographic *** process,called alignment,is generally used to estimate the initial attitude *** is possible because an accurate determination of the inertial measurement unit（IMU） motion is available based on the measurement obtained from global position system（GPS）.But the update frequency of GPS is much lower than *** to the non-synchronous data streams from GPS and SINS,the initial attitude angles may not be computed accurately *** addition,the estimated initial attitude angles may have relatively large uncertainties that can affect the accuracy of other navigation *** paper presents an effective approach of matching the velocities which are provided by GPS and *** this approach,a digital high-pass filter,which implements a pre-filtering scheme of the measured signal,is used to filter the Schuler cycle of discrete velocity difference between the SINS and *** results show that this approach improves the accuracy greatly and makes the convergence time satisfy the required accuracy.

关键词： strapdown inertial navigation system(SINS) global position system(GPS) integration alignment high-pass filter.

Microstructures and coercivity mechanism of 2:17-type Sm-Co magnets with high remanence

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Rare Metals 2022年第4期41卷 1353-1356页

作者： wei sun Ming-Gang Zhu yi-Kun Fang Zhi-ying Liu Zhao-Hui Guo wei Li Division of Functional Materials Central Iron and Steel Research InstituteBeijing 100081China

Sm(Co_(bal)Fe_(0.245)Cu_(0.07)Zr_(0.02))7.8(at%)sintered magnets with high remanence(B_(r)~1.15 T)were prepared using a traditional powder metallurgy *** magnetic properties,especially intrinsic coercivity(H_(cj)),were obtained through adjusting isothermal procedure parameters.H_(cj)of the magnets increases from 305 to 752 kA·m^(-1)with isothermal annealing time increasing from 3 to 20 h,while B_(r) of the magnets almost keeps *** the bright field transmission electron microscopy(TEM)images,it is found that:(1)there is dispersed precipitated phase with very small size in the magnet annealed for 3 h,while the magnets annealed for 20 h have distinct and intact cellular structure;(2)the number density of Z-phase in magnet annealed for 20 h is bigger than that for 3 ***,the finer microstructures were studied with high-resolution transmission electron microscopy(HRTEM).

关键词： Microstructures Coercivity mechanism 2:17-type SmCo permanent magnet

On Fractional Order Adaptive Observer

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International Journal of Automation and computing 2015年第6期12卷 664-670页

作者： yi-Heng wei Zhen-Yuan sun Yang-Sheng Hu Yong Wang Department of Automation University of Science and Technology of China School of Environmental Science and Optoelectronic Technologies University of Science and Technology of China

This article derives a new scheme to an adaptive observer for a class of fractional order systems. Global asymptotic convergence for joint state-parameter estimation is established for linear time invariant single-input single-output systems. For such fractional order systems, it is proved that all the signals in the resulting closed-loop system are globally uniformly bounded, the state and parameter estimation errors converge to zero. Potential applications of the presented adaptive observer include online system identification, fault detection, adaptive control of fractional order systems, etc. Numerical simulation examples are presented to demonstrate the performance of the proposed adaptive observer.

关键词： Fractional order systems adaptive observer paramet

Resonance and Antiresonance in Electronic Transport Process Through a T-Shaped Quantum Waveguide

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Communications in Theoretical Physics 2008年第4期49卷 1039-1044页

作者： GAO Wen-Zhu ZHENG yi-Song GONG wei-Jiang sun Lang Department of Physics Jilin University Changchun 130023 China

By means of the transfer matrix approach, the linear conductance spectrum for electronic transport through a T-shaped quantum waveguide is calculated. The resonant peaks and the antiresonant dips in the conductance spectrum are mainly focused. The previous prediction about their positions by other theoretical approaches is checked. In addition, a function of spin filtering is suggested based on the interplay of the resonance and antiresonance in this T-shaped quantum waveguide.

关键词： transfer matrix method linear conductance spectrum electronic transport quantum waveguide

Synthesis and Structure of a Novel Macrocyclic Complex [Cd_2(phen)_4(phth)_2]·4H_2O

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Chinese Journal of Structural Chemistry 2005年第11期24卷 1298-1301页

作者： sun Ya-Guang GAO En-Jun wei De-Zhou LIU yi-Nan Laboratory of Coordination Chemistry Shenyang Instituteof Chemical Technology Shenyang Liaoning 110142 China School of Resource ＆ Civil Engineering Northeastern University Shenyang Liaoning 110004 China

A novel complex [Cd2（phen）4（phth）2]·4H2O has been synthesized by the reaction of Hzphth（phthalic acid） and phen（1,10-phenanthroline） with Cd（Ⅱ） in ethanol-water solution. X-ray crystal structure analysis shows it crystallizes in triclinic, space group PI- with a = 10.619（3）, b = 12.560（4）, c = 12.651（4） A, a = 98.775（5）, β = 109.035（5）,γ = 113-576（5）°, C32H24CdN4O6, Mr= 672.95, V = 1381.7（7）A^3, Rint = 0.0358, Z = 2, Dc= 1.618 g/cm^3,μ = 0.845 mm^-1, -6 ≤h≤13, -15 ≤k ≤13, -15 ≤l≤14, F（000） = 680, S = 1.038, R = 0.0480 and wR = 0.0849 for 3992 observed reflections （1 〉 2σ（Ⅰ））. Phth bridges Cd（Ⅱ） to form a macrocyclic compound, and a 2D supramolecular motif is formed through hydrogen bonds and π-π interaction.

关键词： cadmium complex crystal structure hydrogen bonding π-π interaction

Dual-Donor-Induced Crystallinity Modulation Enables 19.23% Efficiency Organic Solar Cells

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NANO-MICRO LETTERS 2025年第1期17卷 1-13页

作者： Liang, Anhai sun, Yuqing Chung, Sein Shin, Jiyeong sun, Kangbo Zhu, Chaofeng Zhao, Jingjing Zhao, Zhenmin Zhong, Yufei Zhang, Guangye Cho, Kilwon Kan, Zhipeng Guangxi Univ Inst Sci & Technol Carbon Peak & Neutral Ctr Nanoenergy Res Sch Phys Sci & Technol Nanning 530004 Peoples R China Pohang Univ Sci & Technol Dept Chem Engn Pohang 37673 South Korea Shenzhen Technol Univ Coll New Mat & New Energies Shenzhen 518118 Peoples R China NingboTech Univ Zhejiang Engn Res Ctr Fabricat & Applicat Adv Phot Sch Mat Sci & Engn Ningbo 315100 Peoples R China State Key Lab Featured Met Mat & Life Cycle Safety Nanning 530004 Peoples R China

By modulating the crystalline properties of the active layer with dual donors, the efficiency of organic solar cells reaches 19.23%.The introduction of PTzBI-dF suppresses the accumulation of traps and charge recombination, allowing ternary devices to maintain 82% of their initial power conversion efficiency (PCE) after illumination for 800 *** dual-donor strategy for modulating the crystallinity of the active layer is applicable to a variety of Y6 derivatives, and the increase in PCE exceeds 1%. Trap-assisted charge recombination is one of the primary limitations of restricting the performance of organic solar cells. However, effectively reducing the presence of traps in the photoactive layer remains challenging. Herein, wide bandgap polymer donor PTzBI-dF is demonstrated as an effective modulator for enhancing the crystallinity of the bulk heterojunction active layers composed of D18 derivatives blended with Y6, leading to dense and ordered molecular packings, and thus, improves photoluminescence quenching properties. As a result, the photovoltaic devices exhibit reduced trap-assisted charge recombination losses, achieving an optimized power conversion efficiency of over 19%. Besides the efficiency enhancement, the devices comprised of PTzBI-dF as a third component simultaneously attain decreased current leakage, improved charge carrier mobilities, and suppressed bimolecular charge recombination, leading to reduced energy losses. The advanced crystalline structures induced by PTzBI-dF and its characteristics, such as well-aligned energy level, and complementary absorption spectra, are ascribed to the promising performance improvements. Our findings suggest that donor phase engineering is a feasible approach to tuning the molecular packings in the active layer, providing guidelines for designing effective morphology modulators for high-performance organic solar cells.

关键词： Trap-assisted charge recombination Photoluminescence Miscibility Current leakage Power conversion efficiency

High efficient removal of HCN over porous CuO/CeO2 micro-nano spheres at lower temperature range

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Chinese Journal of Chemical Engineering 2021年第10期34卷 155-164页

作者： Zhihao yi Jie sun Jigang Li Tian Zhou Shouping wei Hongjia Xie Yulin Yang Department of Chemistry Defense Institute of NBC DefenseBeijing 102205China

The porous CeO2 flowerlike micro-nano spheres based materials were prepared to remove HCN effectively at lower temperature *** CeO2 and a serious of porous flowerlike ceria based materials loaded with metal species including Cu,Ag,Ni,Co and Fe were synthesized by hydrothermal method and precipitation method *** physicochemical properties were probed by means of XRD,H2-TPR,BET,SEM and *** removal ability for 130 mg·m﹣3 HCN over CuO/CeO2 showed the highest activity,the breakthrough time of which was more than 70 min at the condition of 30℃,120,000 h-1 and b 5%(volume)H2O,owe to a higher relative atomic ratio of oxygen vacancies and Oβ,the stronger interaction between metal particle and support,the optimum redox *** reaction mechanism was speculated by detecting the reaction products selectivity at different reaction *** was shown that the reaction system for removal of HCN over CuO/CeO2 catalytic material involved chemisorption,catalytic hydrolysis,catalytic oxidation as well as NH3-SCR reactions.

关键词： Rice(Oryza sativa L.) Saline-alkaline stress Abscisic acid(ABA) OsABA8ox1-kd Endogenous ABA levels

Characterization of vortex structures with self-excited oscillations based on Liutex-Omega vortex identification method

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Journal of Hydrodynamics 2023年第1期35卷 95-111页

作者： Dong-dong Wang Zhao-hui Wang yi-wei Fan Xiao sun Quan-jie Gao Key Laboratory of Metallurgical Equipment and Control Technology of Ministry of Education Wuhan University of Science and TechnologyWuhan430081China Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering Wuhan University of Science and TechnologyWuhan430081China

The self-excited oscillation effect produces a continuous periodic pulsation without an external excitation *** is widely used in fluid heat and mass transfer,cavitation and resistance reduction,and other related *** self-excited oscillation effect is significantly influenced by the vortex structure created by the jet passing through the specially designed *** flow field in a self-excited oscillation cavity is simulated in this paper using the large eddy simulation(LES)*** Liutex-Omega([Math Processing Error])method is used to analyze the vortex structure’s evolution inside the cavity and is contrasted with the Q-criterion,the λ_(2)-criterion,and the Omega(Ω)*** studies indicate that the[Math Processing Error]method is less sensitive to threshold selection compared with other methods,while it is more capable of identifying weak *** change in cavity vortex structure can be devided into the four stages of vortex ring priming,growth and development,wall touch separation,and *** turbulent energy generated by shear effect can promote the growth and development of the vortex ring structure and has an important influence on the formation of the vortex ring *** vortex strength reveals the interaction mechanism between the shear effect and vortex *** vortex core area illustrates that the small-scale vortices are mainly distributed inside the collision walls of the cavity and the downstream flow *** Liutex-omega method has unique advantages in analyzing the cavity flow field and revealing the mechanism of self-excited oscillations.

关键词： Vortex identification Liutex-Omega([Math Processing Error]) self-excited oscillation large eddy simulation(LES)