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Comparative Study on the Development of Urban Basic Medical Insurance in 14 Cities of Liaoning Province

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Asian Journal of Social Pharmacy 2020年第1期15卷 44-56页

作者： zhi yuanyuan Wang Shuling School of Business Administration Shenyang Pharmaceutical UniversityShenyang 110016China

Objective To put forward some suggestions for the development of urban basic medical insurance of Liaoning by comparing the development situations in 14 cities of Liaoning *** Relevant data of urban basic medical insurance from 2008 to 2018 in 14 cities were collected to make a comparative analysis,and the 5 why analysis chart was drawn to investigate the development differences in 14 *** and Conclusion The average growth rate of the number of urban residents covered by urban basic medical insurance varied greatly from 2014 to *** range of average growth rate of urban residents’medical insurance is 19.1%,and the range of average growth rate of urban workers’medical insurance is 9.1%.Funding standards are basically the *** is suggested each municipal government should attach importance to this *** can make full use of information technology to coordinate with various authorities and ensure the smooth development of medical ***,they must actively adapt to their conditions to better develop the urban basic medical insurance of Liaoning.

关键词： urban basic medical insurance development of Liaoning medical insurance difference

Intense and Superflat White Laser with 700-nm 3-dB Bandwidth and 1-mJ Pulse Energy Enabling Single-Shot Subpicosecond Pulse Laser Spectroscopy

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Research 2024年第2期6卷 319-327页

作者： Lihong Hong Haiyao Yang Liqiang Liu Mingzhou Li yuanyuan Liu Baoqin Chen Huakang Yu Wenbo Ju zhi-Yuan Li School of Physics and Optoelectronics South China University of TechnologyGuangzhou 510641China State Key Laboratory of Luminescent Materials and Devices South China University of TechnologyGuangzhou 510640China

An optical spectrometer is a basic spectral instrument that probes microscopic physical and chemical properties of macroscopic objects but generally suffers from difficulty in broadband time-resolved *** this work,we report the creation of ultrabroadband white-light laser with a 3-dB bandwidth covering 385 to 1,080 nm,pulse energy of 1.07 mJ,and pulse duration of several hundred femtoseconds by passing 3-mJ pulse energy,50-fs pulse duration Ti:Sapphire pulse laser through a cascaded fused silica plate and chirped periodically poled lithium niobate *** utilize this unprecedented superflat,ultrabroadband,and intense femtosecond laser light source to build a single-shot(i.e.,single-pulse)subpicosecond pulse laser ultraviolet-visible-near-infrared spectrometer and successfully measure various atomic and molecular absorption *** single-shot ultrafast spectrometer may open up a frontier to monitor simultaneously the ultrafast dynamics of multiple physical and chemical processes in various microscopic systems.

关键词： Pulse utilize frontier

Synergic action of linear dispersion, second-order nonlinearity, and third-order nonlinearity in shaping the spectral profile of a femtosecond pulse transporting in a lithium niobate crystal

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Photonics Research 2024年第4期12卷 774-783页

作者： LIHONG HONG yuanyuan LIU zhi-YUAN LI State Key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China School of Physics and Optoelectronics South China University of TechnologyGuangzhou 510640China

We present a detailed theoretical and numerical analysis on the temporal-spectral-spatial evolution of a highpeak-power femtosecond laser pulse in two sets of systems:a pure lithium niobate(LN)plate and a periodically poled lithium niobate(PPLN)*** develop a modified unidimensional pulse propagation model that considers all the prominent linear and nonlinear processes and carried out the simulation process based on an improved split-step Fourier transformation *** theoretically analyze the synergic action of the linear dispersion effect,the second-order nonlinearity(2nd-NL)second-harmonic generation(SHG)effect,and the third-order nonlinearity(3rd-NL)self-phase modulation(SPM)effect,and clarify the physical mechanism underlying the peculiar and diverse spectral broadening patterns previously reported in LN and PPLN thin plate *** analysis and discussion provides a deeper insight into the synergetic contribution of these linear and nonlinear effects brought about by the interaction of a femtosecond laser pulse with the LN nonlinear crystal and helps to draw a picture to fully understand these fruitful optical physical processes,phenomena,and laws.

关键词： pulse nonlinearity lithium

Impact of oxygen incorporation on interface optimization and defect suppression for efficiency enhancement in Cu_(2)ZnSn(S,Se)_(4)solar cells

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Journal of Energy Chemistry 2024年第8期95卷 77-85,I0003页

作者： Shicheng Deng Songfan Wang yuanyuan Wang Qian Xiao Yuena Meng Dongxing Kou Wenhui Zhou Zhengji Zhou zhi Zheng Sixin Wu Key Laboratory for Special Functional Materials of MOE National&Local Joint Engineering Research Centre for High-efficiency Display and Lighting TechnologySchool of MaterialsHenan UniversityKaifeng 475004HenanChina Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province Institute of Surface Micro and Nano MaterialsCollege of Chemical and Materials EngineeringXuchang UniversityXuchang 461000HenanChina

Kesterite Cu_(2)ZnSn(S,Se)_(4)(CZTSSe)solar cells suffer from severe carrier recombination,limiting the photovoltaic *** energy band alignment at the p-n junction and defective front interface are two main ***,oxygen incorporation in CZTSSe via absorber air-annealing was developed as a strategy to optimize its surface photoelectric property and reduce the *** optimized oxygen incorporation conditions,the carrier separation and collection behavior at the front interface of the device is *** particular,it is found that oxygen incorporated absorber exhibits increased band bending,larger depletion region width,and suppressed absorber *** indicate the dynamic factors for carrier separation become ***,the increased potential difference between grain boundaries and intra grains combined with the decreased concentration of interface deep level defect in the absorber provide a better path for carrier *** a consequence,the champion efficiency of CZTSSe solar cells has been improved from 9.74%to 12.04%with significantly improved open-circuit voltage after optimized air-annealing *** work provides a new insight for interface engineering to improve the photoelectric conversion efficiency of CZTSSe devices.

关键词： Kesterite Thin film solar cell Interface optimization Surface oxidation Defect suppression

Synthesis of size-controlled and dispersible Sm2Fe17N3 magnetic particles by reduction diffusion process using molten salt

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Journal of Rare Earths 2024年第11期42卷 2105-2111页

作者： Junhua Xi zhi Yang Muhammad Haseeb yuanyuan Chen Xiaofeng Nie Liying Cong Qiong Wu Enfeng Fu Hongguo Zhang Weiqiang Liu Ming Yue Faculty of Materials and Manufacturing Key Laboratory of Advanced Functional MaterialsMinistry of Education of ChinaBeijing University of Technology

The synthesis of size-controlled Sm2Fe17magnetic particles is a prerequisite for the fabrication of highperformance Sm2Fe17N3permanent magnetic ***,Sm2Fe17was synthesized using a costeffective reduction-diffusion *** calcium chloride molten salt was introduced to control the particle size and achieve a single phase of *** effects of reduction-diffusion reaction temperature and the amount of added calcium chloride on the phase constitution and microstructure of the final product of reduction-diffusion were systematically *** an appropriate amount of calcium chloride can effectively inhibit the overgrowth and sintering of the reduced *** employing the strategy of adding 20 wt% of calcium chlorides into the green compacts,we were able to successfully synthesize uniform Sm2Fe17particles that are well-dispersed,with an average size of 2.2 μ***,by combining the optimal reduction-diffusion conditions and the nitriding process,the hard magnetic Sm2Fe17N3material was successfully *** study could be useful for the development of high-performance Sm2Fe17N3magnetic materials utilizing reduction-diffusion technology.

关键词： Molten salt Permanent magnets Rare earths Reduction-diffusion Sm2Fe17N3

反对称横向荷载作用下钢梁的弹性弯扭屈曲研究

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应用力学学报 2019年第3期36卷 637-644,761-762页

作者：王杜欣支圆圆兰州大学西部灾害与环境力学教育部重点实验室土木工程与力学学院兰州730000

为了建立反对称横向荷载作用下双轴对称截面简支钢梁弹性弯扭屈曲的设计理论,考虑荷载比例系数ψ的影响,推导了反对称横向荷载作用下钢梁的弯扭屈曲总势能方程。采用Rayleigh-Ritz法得到了反对称横向荷载作用下钢梁弹性临界弯矩M_(cr)... 详细信息

为了建立反对称横向荷载作用下双轴对称截面简支钢梁弹性弯扭屈曲的设计理论,考虑荷载比例系数ψ的影响,推导了反对称横向荷载作用下钢梁的弯扭屈曲总势能方程。采用Rayleigh-Ritz法得到了反对称横向荷载作用下钢梁弹性临界弯矩M_(cr)的通用计算式以及系数C_1、C_2的计算式,并总结了荷载比例系数ψ对临界弯矩的影响规律。采用有限元法对本文理论公式进行了验证,当0≤ψ≤4时,临界弯矩M_(cr)的理论解与有限元解吻合良好;当ψ>4时,临界弯矩收敛于ψ=4时的值。在此基础上,通过线性回归分析,拟合出了等效弯矩系数C_b与荷载比例系数ψ以及跨长影响系数ξ之间的近似关系式,C_b的近似解与有限元解吻合较好,最大误差为6.5%,大部分工况下误差控制在5%以内。该拟合公式适用性较强,精度较高。

关键词：反对称横向荷载弯扭屈曲临界弯矩有限元分析线性回归分析

复合荷载作用下钢梁弯扭屈曲的临界弯矩:(Ⅱ)系数计算及数值算例

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建筑结构学报 2020年第8期41卷 165-175页

作者：文天星刘占科曹舒支圆圆兰州大学土木工程与力学学院甘肃兰州730000 兰州大学西部灾害与环境力学教育部重点实验室甘肃兰州730000

基于平面外4种边界约束条件简支钢梁在满跨均布荷载、跨中对称集中荷载和端弯矩作用下,以及平面外4种边界约束条件固支钢梁在满跨均布荷载、跨中对称集中荷载作用下的Mcr三系数(C1,i、C2,i、C3,i)计算式,计算了典型单一荷载工况的Mcr三... 详细信息

基于平面外4种边界约束条件简支钢梁在满跨均布荷载、跨中对称集中荷载和端弯矩作用下,以及平面外4种边界约束条件固支钢梁在满跨均布荷载、跨中对称集中荷载作用下的Mcr三系数(C1,i、C2,i、C3,i)计算式,计算了典型单一荷载工况的Mcr三系数数值,给出了横向荷载与端弯矩共同作用简支钢梁以及横向荷载两两共同作用固支钢梁的复合弯矩系数Cb计算式,通过数值算例验证了本文Mcr三系数和复合弯矩系数计算式的精度。最后对比了本文的Mcr三系数数值与EN 1999-1-1:2007和ENV 1993-1-1:1992中单一荷载的Mcr三系数数值,校验了"4M"等效弯矩系数计算式对简支钢梁、固支钢梁的适用性。结果表明:对于除平面外边界约束条件为R-R(平面外两端简支且约束转动)外的单轴或双轴对称截面简支钢梁以及双轴对称截面固支钢梁,单一荷载的Mcr三系数的数值或计算式以及复合弯矩系数计算式均具有较高精度;EN 1999-1-1:2007和ENV 1993-1-1:1992中部分工况的C2,i和C3,i不精确;现有"4M"等效弯矩系数计算式仅能用于计算平面内外简支钢梁的Cb或C1,i。

关键词：钢梁弯扭屈曲复合荷载临界弯矩复合弯矩系数

复合荷载作用下钢梁弯扭屈曲的临界弯矩:(Ⅰ)理论研究

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建筑结构学报 2020年第8期41卷 154-164页

作者：刘占科支圆圆文天星曹舒兰州大学西部灾害与环境力学教育部重点实验室甘肃兰州730000 兰州大学土木工程与力学学院甘肃兰州730000

边界约束条件是影响钢梁弯扭屈曲临界弯矩的重要因素之一,但当前复合荷载作用下钢梁临界弯矩的研究仅为平面内、外均简支的情况。本文基于完备的总势能方程,采用Euler微分方程推导了完备的钢构件弯扭屈曲平衡微分方程组,进而简化得到钢... 详细信息

边界约束条件是影响钢梁弯扭屈曲临界弯矩的重要因素之一,但当前复合荷载作用下钢梁临界弯矩的研究仅为平面内、外均简支的情况。本文基于完备的总势能方程,采用Euler微分方程推导了完备的钢构件弯扭屈曲平衡微分方程组,进而简化得到钢梁弯扭屈曲侧移与扭转角独立及耦合时的平衡微分方程。分别采用Galerkin法、Rayleigh-Ritz法求解平衡微分方程(组)、总势能方程,得到了复合荷载作用下钢梁临界弯矩Mcr的计算式、双重求和形式的复合弯矩系数计算式以及单一荷载作用下的Mcr三系数(C1,i、C2,i、C3,i)通式,揭示了单一荷载两两共同作用时相关系数C1,ij的互等性和统一性特征,得到了平面外不同边界约束条件下比值C2,i/C1,i和C3,i/C1,i的关系,对影响Mcr三系数数值的因素进行了分析。研究表明:钢梁临界弯矩Mcr的计算式、复合弯矩系数Cb计算式以及Mcr的三系数通式适用于平面外4种不同边界约束条件的简支钢梁和固支钢梁;三系数形式的临界弯矩Mcr的计算式是基于扭转角试函数的基函数取1项得到的,系数C1,i的精度仅受侧移与扭转角是否耦合的影响,比值C2,i/C1,i和C3,i/C1,i不受侧移与扭转角是否耦合的影响,与采用Galerkin法还是Rayleigh-Ritz法无关。

关键词：钢梁弯扭屈曲临界弯矩基准弯矩临界弯矩三系数通式复合弯矩系数

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浅析中国的航天活动许可制度

北京航空航天大学学报（社会科学版） 2019年第1期32卷 123-129页

作者：支媛媛北京航空航天大学法学院北京100083

近年来,中国航天事业迅速发展,而中国的航天活动立法则相对滞后。航天活动许可制度作为一种特殊的行政许可是航天活动立法的重要内容,它的建立是中国履行国际条约、减少财政支出、促进航天商业化发展的需要。中国航天活动许可,包括生产... 详细信息

近年来,中国航天事业迅速发展,而中国的航天活动立法则相对滞后。航天活动许可制度作为一种特殊的行政许可是航天活动立法的重要内容,它的建立是中国履行国际条约、减少财政支出、促进航天商业化发展的需要。中国航天活动许可,包括生产科研许可、民用发射许可及出口许可。目前的许可制度,存在法律层级低、法律空白、许可程序操作性不强等问题。在立法上,建议明确主管机关及许可对象、扩大许可范围、细化许可程序,增加法律的前瞻性。

关键词：航天活动许可制度行政许可许可对象许可范围许可程序航天活动立法