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Perturbation to Lie-Mei Symmetry and Adiabatic Invariants for Birkhoffian Systems

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Communications in Theoretical Physics 2009年第7期52卷 1-6页

作者： ZHANG Ming-Jiang FANG Jian-Hui LU Kai pang Ting lin Peng College of Physics Science and Technology China University of Petroleum Dongying 257061 China

Based on the concept of adiabatic invariant,the perturbation to Lie-Mei symmetry and adiabatic invariantsfor Birkhoffian systems are *** definition of the perturbation to Lie-Mei symmetry for the system is presented,and the criterion of the perturbation to Lie-Mei symmetry is ***,the Hojman adiabatic invariants andthe Mei adiabatic invariants for the perturbed system are obtained.

关键词： Lie Mei symmetry perturbation adiabatic invariant Birkhoffian system

Symptomatic and optimal supportive care of critical COVID-19:A case report and literature review

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World Journal of Clinical Cases 2020年第23期8卷 6181-6189页

作者： Qi-lin pang Wen-Cheng He Jin-Xiu Li Lei Huang Department of Intensive Care Unit The Third People’s Hospital of ShenzhenShenzhen 518020Guangdong ProvinceChina Department of Intensive Care Unit Peking University Shenzhen HospitalShenzhen 518000Guangdong ProvinceChina

BACKGROUND Coronavirus disease 2019(COVID-19)severity is classified as asymptomatic,mild,moderate,severe,and *** cases account for a large percentage of cases in the epidemic and typically exhibit a favorable ***,a 49%-67%mortality is noted in critical *** COVID-19-specific drug has been reported to date,and symptomatic and optimal supportive care,including oxygenation,anti-coinfection treatments,and ventilation,represent the mainstay of treatment for this disease,especially in critical *** SUMMARY In the above-mentioned context,we share our experience with the treatment of one critical COVID-19 case and review the relevant *** Timely tracheal intubation,reasonable mechanical ventilation support,appropriate anti-infection treatment,and early anticoagulation and immunity support are key factors in the successful treatment of this case.

关键词： COVID-19 Critical case Supportive treatment Mechanical ventilation support Case report Literature review

Improvement in oxidation resistance of Cantor alloy through microstructure tailoring

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China Foundry 2022年第6期19卷 503-510页

作者： Bao-lin pang Man Wang Yue-gang Shen Xiao-li Xi Zuo-ren Nie Collaborative Innovation Center of Capital Resource-Recycling Material Technology Faculty of Materials and ManufacturingBeijing University of TechnologyBeijing 100124China Key Laboratory of Advanced Functional Materials Ministry of EducationBeijing University of TechnologyBeijing 100124China National Engineering Laboratory for Industrial Big-data Application Technology Beijing University of TechnologyBeijing 100124China

A method of improving the oxidation resistance of Cantor alloy through microstructure tailoring was *** with distinctive microstructures were achieved by different annealing treatments on the cold-rolled Cantor *** test was then carried out on the various annealed samples at 800°C for 24 h in *** oxidation behavior was evaluated in terms of oxidation rate,surface and cross-section microstructure *** stratified oxide layers including outer Mn_(2)O_(3) and inner Cr_(2)O_(3) were observed in all the annealed samples,the thickness of Mn_(2)O_(3) and Cr_(2)O_(3) layers was ***,the samples exhibited different oxidation *** results indicate that the oxidation resistance of various annealed samples is closely related with grain size as well as twin density.

关键词： Cantor alloy annealing temperature grain size twins oxidation behavior

巨灾风险大数据处理应急分类、分解、分拣算法与应用

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系统工程理论与实践 2015年第3期35卷 743-750页

作者：庞素琳暨南大学公共管理学院/应急管理学院/金融工程研究所广州510520 广东省公共网络安全风险评价与预警应急技术研究中心广州510632

本文主要研究巨灾风险大数据处理的应急分类、分解、分拣算法,给出了相应的算法原理和可操作的步骤.首先根据巨灾风险大数据灾害规模巨大的特征,提出了一种用来解决巨灾风险大数据中一级事件的应急分类与二级事件及以下更低级事件的应... 详细信息

本文主要研究巨灾风险大数据处理的应急分类、分解、分拣算法,给出了相应的算法原理和可操作的步骤.首先根据巨灾风险大数据灾害规模巨大的特征,提出了一种用来解决巨灾风险大数据中一级事件的应急分类与二级事件及以下更低级事件的应急分解算法,并以特大地震灾害作为实例进行了算法应用.接着定义了事故灾难度,用来对巨灾风险大数据处理过程中,对各种级别的事故灾难后果进行不同的数字标识.然后提出一种用来解决巨灾风险中大数据快速处理的应急分拣算法,并在汶川地震中大规模灾害的应急救援计划中进行应用.经过采用这样的应急分拣原理,就可以在面对巨灾风险大数据的复杂、繁多和零乱的重灾事件状态下,使整个应急救援方案优化,并能够有条不紊地进行救援.

关键词：巨灾风险大数据应急分类分解算法应急分拣算法事故灾难度特大地震灾害

Fabry–Prot resonance coupling associated exceptional points in a composite grating structure

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Chinese Physics B 2018年第5期27卷 209-214页

作者： Zhi-Sen Jiang De-Jiao Hu lin pang Fu-Hua Gao Ping Wang Key Laboratory of High Energy Density Physics and Technology of Ministry of Education Sichuan University Chengdu 610065 China College of Physical Science and Technology Sichuan University Chengdu 610065 China Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications Institute of Photonics Technology Jinan University Guangzhou 510632 China

The exceptional point（EP） is a significant and attractive phenomenon in an open quantum system. The scattering properties of light are similar to those in the open quantum system, which makes it possible to achieve EP in the optic system. Here we investigate the EP in a Fabry–P′erot（F–P） resonant coupling structure. The coupling between different types of F–P resonances leads to a near zero reflection, which results in a degeneration of eigenstates and thus the appearing of EP. Furthermore, the multi-wavelength EPs and unidirectional invisibility can be achieved which may be used in integrated photonics systems.

关键词： exceptional point Fabry-Perot resonance metallic grating

Supervised Analysis of Hepatitis C Virus RNA-Positive Case Reporting in County-Level Hospitals--China,2013−2018

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China CDC weekly 2020年第31期2卷 587-590页

作者： Faxin Hei Guowei Ding Shaodong Ye Hailiang Yu lin pang Zhongfu Liu National Center for STD/AIDS Prevention and Control Chinese Center for Disease Control and PreventionBeijingChina

What is already known on this topic?To understand the status of the diagnosis and reporting of hepatitis C and standardize the reporting of hepatitis C cases in county-level hospitals,we conducted the first supervised analysis of hepatitis C cases in county-level hospitals in China from 2013 to 2018,covering all provincial-level administrative divisions(PLADs)except *** is added by this report?Through 6 years of supervision,we have obtained key data such as the nucleic acid detection rate and positive rate of hepatitis C virus(HCV)antibody positive cases in our county-level hospitals,the report rate and accuracy of HCV RNA positive cases,and standardized and improved the hepatitis C case reporting in countylevel hospitals to improve data quality and provide data support for the judgment and estimation of hepatitis C in *** are the implications for public health practice?By strengthening the management and supervision of hepatitis C case reporting,the reporting rate and accuracy of HCV RNA positive cases in county-level hospitals in China had been greatly *** combining the number of HCV antibody tests and the number of viral nucleic acid tests in medical institutions around the country,it was possible to effectively assess the current status of hepatitis C in China and to provide a scientific basis for the development of hepatitis C prevention and treatment measures.

关键词： prevention diagnosis strengthening

Coronavirus Disease 2019 versus Influenza A in Children: An Observational Control Study in China

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Biomedical and Environmental Sciences 2020年第8期33卷 614-619页

作者： ZHAO Yang SUN De lin Heather CBouchard ZHANG Xin Xin WAN Gang HAO Yi Wei HE Shu Xin JIANG Yu Yong pang lin Department of Pediatrics Beijing Ditan HospitalCapital Medical UniversityBeijing 100015China Brain Imaging and Analysis Center Duke UniversityDurham 20075North CarolinaUSA Department of Party Committee Beijing Ditan HospitalCapital Medical UniversityBeijing 100015China Department of Medical Records Beijing Ditan HospitalCapital Medical UniversityBeijing 100015China Center of Integrative Medicine Beijing Ditan HospitalCapital Medical UniversityBeijing 100015China

This study aimed to understand the differences in clinical,epidemiological,and laboratory features between the new coronavirus disease 2019(COVID-2019)and influenza A in *** of 23 hospitalized children with COVID-19(9 boys,5.7±3.8 years old)were compared with age-and sexmatched 69 hospitalized and 69 outpatient children with influenza A from a hospital in China.

关键词： Observation clinical matched

Correlation Analysis Algorithm for Transmission line Fault Location Based on Travelling Wave

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高电压技术 2008年第12期34卷 2637-2641页

作者： DU lin pang Jun SIMA Wen-xia State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University Chongqing 400044 China

This paper introduced correlation method to locate transmission line *** it described the principle of transmission line fault location based on traveling *** principle of correlation analysis is introduced,then the method using correlation analysis in fault location is *** line model is established with *** on the model,some kinds of fault are *** feasibility of this algorithm is proved based on simulation *** comparing with the classical wavelet analysis,this paper gave the advantages of this algorithm in two cases:noise influence suppression and accuracy of near distance fault *** is established to simulate transmission line grounding *** experiment result showed the correlation algorithm's *** the analysis result indicated that the correlation algorithm have a high precision.

关键词：行波相关法输电线路故障毁损定位

All-inorganic transparent Hf_(0.85)Ce_(0.15)O_(2)ferroelectric thin films with high flexibility and stability

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Nano Research 2023年第4期16卷 5065-5072页

作者： Sheng-Tao Mo Kai-Ming Feng Jing-lin pang Kuo Ouyang Li-Mei Jiang Qiong Yang Biao Zhang Jie Jiang School of Materials Science and Engineering Xiangtan UniversityXiangtan 411105China Hunan Provincial Key Laboratory of Thin Film Materials and Devices Xiangtan UniversityXiangtan 411105China Key Laboratory of Low Dimensional Materials and Application Technology Ministry of EducationXiangtan UniversityXiangtan 411105China

Electronic devices that are transparent and flexible have a wide range of applications in the domains of vital sign parameter monitoring,health management,and so *** memory is a revolutionary nonvolatile memory that is ideal for data storage and processing in transparent flexible electronic *** this study,Ce-doped hafnium oxide ferroelectric thin film is manufactured on mica substrate by the chemical solution deposition with transparent indium tin oxide(ITO)thin films as the bottom *** transmittance of mica/ITO/Hf_(0.85)Ce_(0.15)O_(2)thin film is over 80%.The 2Pr of the transparent flexible Hf_(0.85)Ce_(0.15)O_(2)ferroelectric thin film is increased by about 22.4%and the Ec is reduced by 26.7%compared with those of Hf_(0.85)Ce_(0.15)O_(2)ferroelectric thin film grown on p+-Si *** transparent flexible Hf_(0.85)Ce_(0.15)O_(2)ferroelectric thin film can remain keeping good quality when being bent under±2.5 mm bending ***,degradation of polarization,retention,and endurance performance was not obvious even at a bending radius of 5.0 mm after 104 bending *** research provides a new strategy and an important experimental basis for the development and implementation of transparent flexible ferroelectric memories.

关键词： flexible Hf_(0.85)Ce_(0.15)O_(2)thin films transparent thin films ferroelectric properties