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A New Mach-Zehnder Interferometer to Measure Light Beam Dispersion and Phase Shift

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Chinese Physics Letters 2013年第4期30卷 38-40页

作者： yang xu-dong School of Applied Science Taiyuan University of Science and TechnologyTaiyuan 030024

A novel Mach–Zehnder(M-Z)interferometer used to measure the dispersion and phase shift of a light beam is *** interferometer consists of two identical beam displacing polarizers,which makes two beams of interference light pass through the same optical device and greatly improves the stability of the M-Z *** basic method of dispersion and phase measuring through the present interferometer is introduced in detail,and the actual application is demonstrated by a specific *** the measuring of dispersion and phase shift is the heating point in the field of optics,it is obvious that the M-Z interferometer will have important applications in aspects of optics,especially quantum optics and optical information processing.

关键词： interferometer optical optics

Semicontinuity of the Minimal Solution Set Mappings for Parametric Set-Valued Vector Optimization Problems

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Journal of the Operations Research Society of China 2021年第2期9卷 441-454页

作者： Xin xu yang-dong xu Yue-Ming College of Science Chongqing University of Posts and TelecommunicationsChongqing 400065China

With the help of a level mapping,this paper mainly investigates the semicontinuity of minimal solution set mappings for set-valued vector optimization ***,we introduce a kind of level mapping which generalizes one given in Han and Gong(Optimization 65:1337–1347,2016).Then,we give a sufficient condition for the upper semicontinuity and the lower semicontinuity of the level ***,in terms of the semicontinuity of the level mapping,we establish the upper semicontinuity and the lower semicontinuity of the minimal solution set mapping to parametric setvalued vector optimization problems under the C-Hausdorff continuity instead of the continuity in the sense of Berge.

关键词： Set-valued vector optimization problems Level mapping Solution set mapping Upper semicontinuity Lower semicontinuity

A Maple Package on Symbolic Computation of Hirota Bilinear Form for Nonlinear Equations

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Communications in Theoretical Physics 2009年第11期52卷 801-807页

作者： yang xu-dong RUAN Hang-Yu Department of Physics Ningbo University Ningbo 315211 China

An improved algorithm for symbolic computation of Hirota bilinear forms of KdV-type equations withlogarithmic transformations is *** the algorithm,the general assumption of Hirota bilinear form is successfullyreduced based on the property of uniformity in ***,we discard the integral operation in the *** software package HBFTrans is written in Maple and its running effectiveness is tested by a variety solitonequations.

关键词： Hirota bilinear form nonlinear equation, symbolic algebra

On the Stability of the Solution Set Mappings to Parametric Set Optimization Problems

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Journal of the Operations Research Society of China 2016年第2期4卷 255-263页

作者： yang-dong xu Ping-Ping Zhang College of Science Chongqing University of Posts and TelecommunicationsChongqing 400065China

In this paper,under some suitable assumptions without any involving information on the solution set,we give some sufficient conditions for the upper semicontinuity,lower semicontinuity,and closedness of the solution s... 详细信息

关键词： Upper semicontinuity Lower semicontinuity Closedness Parametric set optimization problem Less order relation

Convergence Analysis of Nonconforming Carey Element on Anisotropic Meshes in 3-D

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Chinese Quarterly Journal of Mathematics 2006年第3期21卷 368-374页

作者： SHI dong-yang xu Chao Department of Mathematics Zhengzhou University Zhengzhou 450052 China

In this paper, the convergence analysis of the famous Carey element in 3-D is studied on anisotropic meshes. The optimal error estimate is obtained based on some novel techniques and approach, which extends its applic... 详细信息

关键词： Carey nonconforming finite element anisotropic meshes optimal error estimate

A Maple Package on Symbolic Computation of Conserved Densities for （1＋l）-Dimensional Nonlinear Evolution Systems

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Communications in Theoretical Physics 2007年第6期47卷 961-968页

作者： yang xu-dong RUAN Hang-Yu LOU Sen-Yue Department of Physics Ningbo University Ningbo 315211 China Department of Physics Shanghai Jiao Tong University Shanghai 200030 China

A new algorithm for symbolic computation of polynomial-type conserved densities for nonlinear evolution systems is presented. The algorithm is implemented in Maple. The improved algorithm is more efficient not only in removing the redundant terms of the genera/form of the conserved densities but also in solving the conserved densities with the associated flux synchronously without using Euler operator. Furthermore, the program *** can be used to determine the preferences for a given parameterized nonlinear evolution systems. The code is tested on several well-known nonlinear evolution equations from the soliton theory.

关键词： conservation laws nonlinear evolution systems computer algebra

An Extension of Algorithm on Symbolic Computations of Conserved Densities for High-Dimensional Nonlinear Systems

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Communications in Theoretical Physics 2008年第7期50卷 23-30页

作者： yang xu-dong RUAN Hang-Yu LOU Sen-Yue Department of Physics Ningbo University Ningbo 315211 China Department of Physics Shanghai Jiao Tong University Shanghai 200030 China

An improved algorithm for symbolic computations of polynomial-type conservation laws (PCLaws) of ageneral polynomial nonlinear system is *** algorithm is implemented in Maple and can be successfully usedfor high-dimensional ***,the algorithm discards the restriction to evolution *** programcan also be used to determine the preferences for a given parameterized nonlinear *** code is tested on severalknown nonlinear equations from the soliton theory.

关键词： conservation laws nonlinear systems computer algebra

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海洛因渴求度评估的血清学生物标志物研究

中国药物依赖性杂志 2024年第2期33卷 136-141页

作者：杨博珺苏鹏邓云锋杨旭东杨威武汉体育学院运动医学院武汉430079 池州市精神卫生中心安徽池州247100 长沙卫生职业学院公共教学部长沙410100 襄州戒毒所湖北襄阳441105

目的海洛因成瘾是一种慢性、复发性脑病,具有高度的精神和躯体依赖性,氧化应激、炎症反应、神经因子代谢紊乱被证明参与其成瘾的病理生理机制。开发海洛因成瘾的生物标志物对于其易感性预测、临床干预及治疗效果的评估至关重要,因此,本... 详细信息

目的海洛因成瘾是一种慢性、复发性脑病,具有高度的精神和躯体依赖性,氧化应激、炎症反应、神经因子代谢紊乱被证明参与其成瘾的病理生理机制。开发海洛因成瘾的生物标志物对于其易感性预测、临床干预及治疗效果的评估至关重要,因此,本文力求筛选并探讨潜在性成瘾机制关联因子丙二醛(MDA)、肿瘤坏死因子α(TNF-α)、脑源性神经营养因子(BDNF)及其载体血小板作为海洛因成瘾性血清学生物标志物的可行性和实用性。方法以正常人群52名和海洛因依赖人群51名分别作为对照组和实验组。采用全自动血细胞分析仪测定其血小板数量、酶联免疫吸附法(Enzyme-linked Immunosorbent Assay,ELISA)检测各组别血清MDA、TNF-α及血浆BDNF的含量,采用海洛因渴求评分量表对实验组个体的成瘾性进行评估、Spearman相关性分析评估血清MDA、TNF-α、血浆BDNF和血小板数量与渴求评分的相关性、受试者工作特征曲线(Receiver Operating Characteristic Curve,ROC)评估血浆BDNF和血小板数量对海洛因成瘾性评分的诊断性能及截断值。结果实验组人群血清MDA、TNF-α高于对照组(P<0.05),血浆BDNF和血小板数量低于对照组(P<0.01)。海洛因高成瘾性组血浆BDNF及血小板数量低于海洛因低成瘾性组(P<0.05),实验组血浆BDNF、血小板数量和成瘾性评分呈负相关。血小板数量对海洛因成瘾性的灵敏度和特异度为69%和12%,AUC值为0.76(95%CI:0.66-0.87,P<0.001)。结论研究初步表明,长期海洛因摄入可显著下调血浆BDNF水平和血小板数量,血小板数量可作为评估海洛因成瘾性的新型血清学生物标志物。

关键词：血小板海洛因脑源性神经营养因子成瘾标志物

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给水加氧处理方法的临界氧浓度研究

电站系统工程 2024年第2期40卷 21-23页

作者：阳旭东周云张华聪周宾国家电投集团重庆合川发电有限公司重庆401520

为了确定机组给水加氧处理(OT)方式的最佳加氧浓度,应用临界氧浓度计算方法,并将得到的计算值与实际加氧工况结合进行讨论。结果显示:不同pH下,随着温度增加,临界氧浓度曲线均先增大后减小,且均在150℃时达到最大值,临界氧浓度与pH成反... 详细信息

为了确定机组给水加氧处理(OT)方式的最佳加氧浓度,应用临界氧浓度计算方法,并将得到的计算值与实际加氧工况结合进行讨论。结果显示:不同pH下,随着温度增加,临界氧浓度曲线均先增大后减小,且均在150℃时达到最大值,临界氧浓度与pH成反比;实际电厂中的加氧浓度应控制在60μg/kg左右能够抑制流动加速腐蚀(FAC),同时防止过量溶解氧造成高温受热面的高温腐蚀和应力腐蚀。

关键词：给水加氧处理加氧浓度临界氧浓度流动加速腐蚀