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蚌埠市2012-2021年丙型病毒性肝炎流行特征及趋势预测

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安徽预防医学杂志 2024年第1期30卷 39-42页

作者：潘阳韩解王祥蚌埠市疾病预防控制中心安徽233020

目的分析蚌埠市2012-2021年丙型肝炎流行特征并对未来发病趋势进行预测。方法通过中国疾病预防控制信息系统丙肝监测模块获取2012-2021年报告的现住址为蚌埠市的丙肝病例数据,采用描述流行病学方法分析蚌埠市2012-2021年丙肝流行病学... 详细信息

目的分析蚌埠市2012-2021年丙型肝炎流行特征并对未来发病趋势进行预测。方法通过中国疾病预防控制信息系统丙肝监测模块获取2012-2021年报告的现住址为蚌埠市的丙肝病例数据,采用描述流行病学方法分析蚌埠市2012-2021年丙肝流行病学特征,同时运用指数平滑法依据均方根误差最小原则确立最优预测模型,预测蚌埠市2022-2023年丙肝发病趋势。结果 2012-2021年蚌埠市共报告丙肝病例3 638例,男性1 908例,女性1 730例,男女比为1.10∶1,年报告发病率平均增长速度为8.76%,呈波动上升趋势(χ^(2)_(趋势)=62.530,P<0.001);40~49岁年龄组报告发病人数最多,占23.17%(843/3 638);农民群体报告病例数最多,占50.38%(1 833/3 638);不同月份报告丙肝病例构成比差异有统计学意义(χ^(2)=28.700,P=0.003),其中4月报告病例数最多,共计342例;报告病例数居前3的县(区)分别是五河县(1 050例,占28.86%)、禹会区(643例,占17.67%)、蚌山区(600例,占16.49%)。应用Winter相加模型对2022-2023年蚌埠市丙肝报告发病率进行预测,预测年报告发病率为14.30/10万与16.44/10万。结论蚌埠市2012-2021年丙肝发病率呈上升趋势,Winter相加模型能较好预测蚌埠市丙肝发病趋势,应结合预测模型结果,加强丙肝监测检测和规范治疗。

关键词：丙型病毒性肝炎流行特征 Winter相加模型预测

Relativistic transformation between τ and TCB for Mars missions: Fourier analysis on its accessibility with clock offset

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Research in Astronomy and Astrophysics 2013年第11期13卷 1358-1362页

作者： Jun-yang pan Yi Xie Department of Astronomy Nanjing University Key Laboratory of Modern Astronomy and Astrophysics Nanjing University Ministry of Education

In the context of the fact that Einstein＇s general relativity has become an inevitable part of deep space missions, we will extend previous works on relativistic transformation between the proper time ^- of a clock onboard a spacecraft orbiting Mars and the Barycentric Coordinate Time （TCB） by taking the clock offset into ac- count and investigate its accessibility by Fourier analysis on the residuals after fitting the ^--TCB curve in terms of n-th order polynomials. We find that if the accuracy of a clock can achieve better than ~ 10-5 s or ~ 10-6 s （depending on the type of clock offset） in one year after calibration, the relativistic effects on the difference between 7- and TCB will need to be carefully considered.

关键词： reference systems -- time -- methods: numerical-- space vehicles

Whole pictures of halogenated disinfection byproducts in tap water from China＇s cities

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Frontiers of Environmental Science & Engineering 2015年第1期9卷 121-130页

作者： yang pan Xiangru ZHANG Jianping ZHAI State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing 210023 China Environmental Engineering Program Department of Civil and Environmental Engineering The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China

When bromide/iodide is present in source water, hypobromous acid/hypoiodous acid will be formed with addition of chlorine, chloramine, or other disinfectants. Hypobromous acid/hypoiodous acid undergoes reactions with natural organic matter in source water to form numerous brominated/iodinated disinfection byproducts （DBPs）. In this study, tap water samples were collected from eight cities in China. With the aid of electrospray ionization-triple quadrupole mass spectrometry by setting precursor ion scans of m/z 35, m/z 81, and m/z 126.9, whole pictures of polar chlorinated, brominated, and iodinated DBPs in the tap water samples were revealed for the first time. Numerous polar halogenated DBPs were detected, including haloacetic acids, newly identified halogenated phenols, and many new/unknown halogenated compounds. Total organic chlorine, total organic bromine, and total organic iodine were also measured to indicate the total levels of all chlorinated, brominated, and iodinated DBPs in the tap water samples. The total organic chlorine concentrations ranged from 26.8 to 194.0 μg· L 1 as Cl, with an average of 109.2 μg·L-1 as Cl; the total organic bromine concentrations ranged from below detection limit to 113.3 μg·L-1 as Br, with an average of 34.7 μg·L-1 as Br; the total organic iodine concentrations ranged from below detection limit to 16.4 μg· L-1 as I, with an average of 9.1 μg· L-1 as I; the total organic halogen concentrations ranged from 31.3 to 220.4 μg·L-1 as Cl, with an average of 127.2 μg· L- 1 as Cl.

关键词： Disinfection byproducts (DBPs) total organichalogen tap water in China

基于加速度传感器的轿厢意外移动保护装置的检测方法

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西部特种设备 2024年第2期7卷 22-34页

作者：潘洋付震宇罗可乐山市特种设备监督检验所四川乐山614000

简要介绍一种轿厢意外移动保护装置的检测方法。根据国标对意外移动距离的相关要求,融合加速度传感器和陀螺仪的数据,并对轿厢意外移动时的加速度等数据进行双重积分获得位移,进而得出轿厢意外移动的距离,该方法适用于有机房和无机房电... 详细信息

简要介绍一种轿厢意外移动保护装置的检测方法。根据国标对意外移动距离的相关要求,融合加速度传感器和陀螺仪的数据,并对轿厢意外移动时的加速度等数据进行双重积分获得位移,进而得出轿厢意外移动的距离,该方法适用于有机房和无机房电梯。最终通过对比国标要求,判定轿厢意外移动保护装置是否符合要求。

关键词：电梯意外移动非接触式检测

Method for Six-Legged Robot Stepping on Obstacles by Indirect Force Estimation

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Chinese Journal of Mechanical Engineering 2016年第4期29卷 669-679页

作者： XU Yilin GAO Feng pan yang CHAI Xun State Key Laboratory of Mechanical System and Vibration Shanghai Jiao Tong University

Adaptive gaits for legged robots often requires force sensors installed on foot-tips,however impact,temperature or humidity can affect or even damage those *** have been made to realize indirect force estimation on the legged robots using leg structures based on planar *** Octopus III is a six-legged robot using spatial parallel mechanism（UP-2UPS） *** paper proposed a novel method to realize indirect force estimation on walking robot based on a spatial parallel *** direct kinematics model and the inverse kinematics model are *** force Jacobian matrix is derived based on the kinematics ***,the indirect force estimation model is ***,the relation between the output torques of the three motors installed on one leg to the external force exerted on the foot tip is ***,an adaptive tripod static gait is *** robot alters its leg trajectory to step on obstacles by using the proposed adaptive *** the indirect force estimation model and the adaptive gait are implemented and optimized in a real time control *** experiment is carried out to validate the indirect force estimation *** adaptive gait is tested in another *** results show that the robot can successfully step on a 0.2 m-high *** paper proposes a novel method to overcome obstacles for the six-legged robot using spatial parallel mechanism legs and to avoid installing the electric force sensors in harsh environment of the robot＇s foot tips.

关键词： robot parallel mechanism force estimation obstacle

Human-Tracking Strategies for a Six-legged Rescue Robot Based on Distance and View

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Chinese Journal of Mechanical Engineering 2016年第2期29卷 219-230页

作者： pan yang GAO Feng QI Chenkun CHAI Xun State Key Laboratory of Mechanical System and Vibration Shanghai Jiao Tong University

Human tracking is an important issue for intelligent robotic control and can be used in many scenarios, such as robotic services and human-robot cooperation. Most of current human-tracking methods are targeted for mobile/tracked robots, but few of them can be used for legged robots. Two novel human-tracking strategies, view priority strategy and distance priority strategy, are proposed specially for legged robots, which enable them to track humans in various complex terrains. View priority strategy focuses on keeping humans in its view angle arrange with priority, while its counterpart, distance priority strategy, focuses on keeping human at a reasonable distance with priority. To evaluate these strategies, two indexes（average and minimum tracking capability） are defined. With the help of these indexes, the view priority strategy shows advantages compared with distance priority strategy. The optimization is done in terms of these indexes, which let the robot has maximum tracking capability. The simulation results show that the robot can track humans with different curves like square, circular, sine and screw paths. Two novel control strategies are proposed which specially concerning legged robot characteristics to solve human tracking problems more efficiently in rescue circumstances.

关键词： human-tracking legged robot intelligent control algorithm

Planet-satellite cage hybrids:covalent organic cages encircling metal organic cage

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Science China Chemistry 2022年第5期65卷 858-862页

作者： Chenjuan Yu pan yang Xinyuan Zhu Youfu Wang School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative MoleculesShanghai Jiao Tong UniversityShanghai 200240China School of Materials Engineering Shanghai University of Engineering ScienceShanghai 201620China

As a rising type of precisely molecular nanoobjects,porous molecular cages,including covalent organic cages(COCs) and metal organic cages(MOCs),have attracted much more *** is fascinating to construct well-defined cage hybrids combining COCs and MOCs to further rich their types,properties,and ***,it is a big challenge due to the isotropy of the porous molecular *** this article,an anisotropic COC ligand based on aryl ether bonds and bearing one isophthalate moiety has been designed and *** planet-satellite cage hybrids(PSCHs),MOC@COCs,have been constructed through the coordination of the anisotropic COC ligand and copper ions with or without the help of extra dicarboxylic ligands in an almost quantitative manner for the first *** PSCHs with one different topological MOC(heteroleptic bipolar,distorted cuboctahedral or homoleptic cuboctahedral) as the planet and different numbers of COCs(6,12 or 24) as satellites are *** structural and thermal properties of these PSCHs have also been *** obtained PSCHs exhibit discrete,uniform and stable structures,good solubility and strong film-forming property.

关键词： cage hybrid planet-satellite covalent organic cage metal organic cage giant molecule

高通量血液透析对老年糖尿病肾病患者抗氧化作用及对微炎症状态和心血管事件的影响

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医药论坛杂志 2024年第8期45卷 797-801页

作者：刘敏王琰罗静张瑞杨盼盼郑州大学第一附属医院肾脏内科郑州450000

目的分析高通量血液透析(high throughput hemodialysis,HFHD)对60岁以上糖尿病肾病(diabetic nephropathy,DN)患者抗氧化作用及对微炎症状态、心血管事件的影响。方法回顾性分析2020年5月—2022年4月郑州大学第一附属医院收治DN患者12... 详细信息

目的分析高通量血液透析(high throughput hemodialysis,HFHD)对60岁以上糖尿病肾病(diabetic nephropathy,DN)患者抗氧化作用及对微炎症状态、心血管事件的影响。方法回顾性分析2020年5月—2022年4月郑州大学第一附属医院收治DN患者127例临床资料。根据年龄≥60岁及0.05)。非老年组随访1年生存率高于老年组(P<0.05)。结论老年糖尿病肾病患者应用HFHD治疗可强化抗氧化作用,可有效调节微炎症状态,减轻心血管事件发生率。

关键词： HFHD >60岁糖尿病肾病抗氧化微炎症状态心血管事件

Theoretical Study of the AIEt3-Promoted Tandem Reductive Rearrangement of Epoxides

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Chinese Journal of Chemical Physics 2008年第6期21卷 547-554页

作者： Li-dong Zhang Hui-jun Guo yang pan Fei Qi National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230029 China

The AIEt3-promoted tandem reductive rearrangement reactions of epoxides was studied at B3LYP/6- 31C（d,p） level. For the model compound α-hydroxy epoxides, two possible reaction pathways Ⅰ and Ⅱ were calculated. The main difference is the order of ethylene release and six- to five-member ring rearrangement. The ring contraction rearrangement in pathway Ⅰ is the first step and this step is the rate controlling step with a free energy barrier of 116.62 kJ/mol. For pathway Ⅱ, the ethylene release occurs first, and is followed by a six-member ring opening reaction which is the rate controlling step, and the barrier is 251.38 kJ/mol. The reason for such high barrier is that the ethylene release results in the following reaction being more difficult. The results show that pathway Ⅰ （C-C rearrangement and then ethylene release） is more favorable, which is consistent with experimental results.

关键词： AIEt3 Rearrangement Density functional theory Diol Epoxide