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Acta Mathematicae Applicatae Sinica 2024年

作者： Shi-lin MI guang-zhi du Yao RONG Li-yun ZUO School of Mathematics and Statistics Shandong Normal University College of Engineering Physics Shenzhen Technology University School of Mathematical Sciences University of Jinan

This paper mainly presents and studies some local and parallel finite element methods for the unsteady magnetohydrodynamic equations with low electromagnetic Reynolds number. Firstly, both the semi discrete and fully discrete local algorithms are provided and investigated, and the theoretical tool crucial to the analysis of the fully discrete local algorithm is obtained. Subsequently, we generalize the fully discrete local algorithm to the fully discrete parallel algorithm. At the end, some numerical experiments are provided to validate the effectiveness and efficiency of our algorithms.

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Epilepsy surgery for tuberous sclerosis complex： a case report and literature review

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Chinese Medical Journal 2008年第10期121卷 959-960页

作者： ZHAO Guo-guang SHAN Yong-zhi du Jian-xin LING Feng Department of Neurosurgery Xuanwu Hospital Capital Medical University Beijing 100053 China

Tuberous sclerosis complex （TSC） is a multisystem genetic disorder with variable phenotypic *** is the most common neurological complication and up to 80%-90% of the individuals with TSC suffer from epilepsy at some point in their lifetime. Developmental delay, intellectual impairment, autism, behavioral problems, and neuropsychiatric disorders occur commonly in individuals with TSC and may be associated with poorly controlled epilepsy.~ In this paper we reported a case report of TSC, focusing on the patient＇s clinical symptom, surgical aspects and neuropathology through a comprehensive analysis.

关键词： tuberous sclerosis complex intractable epilepsy epilepsy surgery histopathology

Based on non-targeted metabolomics for differential components screening of Rosae Chinensis Flos and Rosae Rugosae Flos and their quality evaluation

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Traditional Medicine Research 2025年第2期10卷 1-15页

作者： Xu Liang Ni-Hui Zhang zhi-Lai Zhan guang-Lu Chang Yan Gao Xia Li Wen-Yuan Gao School of Pharmaceutical Science and Technology Faculty of MedicineTianjin UniversityTianjin 300193China State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs China Academy of Chinese Medical SciencesBeijing 100700China Key Laboratory of Modern Chinese Medicine Resources Research Enterprises Tianjin 300402China

Background:Rosa chinensis *** Rosa rugosa *** not only of ornamental value,but also edible flowers and the flower buds have been listed in the Chinese Pharmacopoeia as traditional *** two plants have some differences in efficacy,but the flower buds are easily confused for similar *** addition,large-scale cultivation of ornamental rose flowers may lead to a decrease in the effective components of medicinal ***,it is necessary to study the chemical composition and make quality evaluation of Rosae Chinensis Flos(Yueji)and Rosae Rugosae Flos(Meigui).Methods:In this study,40 batches of samples including Meigui and Yueji from different regions in China were collected to establish high-performance liquid chromatography ***,the fingerprints data was analyzed using principal component analysis,hierarchical cluster analysis,and partial least squares discriminant analysis analysis chemometrics to obtain information on intergroup differences,and non-targeted metabolomic techniques were applied to identify and compare chemical compositions of samples which were chosen from groups with large *** compounds were screened by orthogonal partial least-squares discriminant analysis and S-plot,and finally multi-component quantification was performed to comprehensively evaluate the quality of Yueji and ***:The similarity between the fingerprints of 40 batches roses and the reference print R was 0.73 to 0.93,indicating that there were similarities and differences between the *** principal component analysis and hierarchical cluster analysis of fingerprints data,the samples from different origins and varieties were intuitively divided into four *** least-squares discriminant analysis analysis showed that Meigui and Yueji cluster into two categories and the model was reliable.A total of 89 compounds were identified by high resolution mass spectrometry,mainly were flavonoids and flavon

关键词： Rosa chinensis Jacq. Rosa rugosa Thunb. metabolomics chemometrics multiple component quantification quality evaluation

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中央空调水系统传感器在线故障诊断研究

系统仿真学报 2003年第7期15卷 1008-1011页

作者：晋欣桥李晓锋惠广海杜志敏上海交通大学机械与动力工程学院上海200030

针对中央空调冷媒水系统中的温度传感器,本文提出了一种基于数理统计的在线故障诊断方法,以实现在线检测并修正传感器的突发漂移故障。首先建立控制体的能量守恒方程式,然后利用其残差值判断是否出现传感器漂移故障,根据残差方程的数字... 详细信息

针对中央空调冷媒水系统中的温度传感器,本文提出了一种基于数理统计的在线故障诊断方法,以实现在线检测并修正传感器的突发漂移故障。首先建立控制体的能量守恒方程式,然后利用其残差值判断是否出现传感器漂移故障,根据残差方程的数字特征运用数理统计的方法建立诊断方程组,通过采集有效的系统运行数据求解诊断方程组以修正传感器的故障。该方法在已经建立的中央空调水系统仿真器上进行了验证,结果表明它能够较快地解决传感器突发漂移故障,将其嵌入到楼宇智能控制系统中将使系统更可靠,更智能。

关键词：中央空调控制系统在线故障诊断传感器仿真

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中央空调水系统控制的优化分析

系统仿真学报 2003年第8期15卷 1113-1115页

作者：晋欣桥李晓锋惠广海杜志敏上海交通大学机械与动力工程学院上海200030

在中央空调系统仿真的基础上,提出和设计了变水量系统中冷水机组供水温度和二级泵供水压差控制的优化策略,并通过仿真试验进行了验证。试验的结果表明,对优化冷水机组供水温度和二级泵供水压差两个控制变量单独进行优化,可以达到一定的... 详细信息

在中央空调系统仿真的基础上,提出和设计了变水量系统中冷水机组供水温度和二级泵供水压差控制的优化策略,并通过仿真试验进行了验证。试验的结果表明,对优化冷水机组供水温度和二级泵供水压差两个控制变量单独进行优化,可以达到一定的系统节能目的,但是,对于系统的能耗而言,这两个控制变量是相关联的,局部层次上的优化难以获得最佳的节能效果,应在系统层次上同时对它们进行优化。

关键词：中央空调水系统控制优化

Molecular simulation study of the microstructures and properties of pyridinium ionic liquid[HPy][BF_(4)]mixed with acetonitrile

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原子与分子物理学报 2025年第4期42卷 27-32页

作者： XU Jian-Qiang MA Zhao-Peng CHENG Si LIU zhi-Cong ZHU guang-Lai Department of Physics School of Physics and Electronic InformationAnhui Normal UniversityWuhu 241002China

The microstructures and thermodynamic properties of mixed systems comprising pyridinium ionic liquid[HPy][BF_(4)]and acetonitrile at different mole fractions were studied using molecular dynamics simulation in this *** following properties were determined:density,self-diffusion coefficient,excess molar volume,and radial distribution *** results show that with an increase in the mole fraction of[HPy][BF_(4)],the self-diffusion coefficient ***,the excess molar volume initially decreases,reaches a minimum,and then *** rules of radial distribution functions(RDFs)of characteristic atoms are *** increasing the mole fraction of[HPy][BF_(4)],the first peak of the RDFs of HA1-F decreases,while that of CT6-CT6 rises at first and then *** indicates that the solvent molecules affect the polar and non-polar regions of[HPy][BF_(4)]differently.

关键词： Pyridinium ionic liquids Thermodynamic properties Molecular dynamics simulation Radial distribution functions

应用Southern吸印滤膜杂交法检测HBcAg基因片段

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军事医学科学院院刊 1985年第4期 367-370页

作者：丁广治杜连英马贤凯军事医学科学院基础医学研究所

乙型肝炎是一种由DNA病毒引起的发病率很高的传染病。为了提高乙型肝炎的诊断率,近年来出现了许多敏感的特异的血清免疫学诊断方法。作为诊断乙型肝炎用的HBcAg多从病人血清或尸肝中提取,因来源困难故不能广泛使用。最近国外有人采用遗... 详细信息

乙型肝炎是一种由DNA病毒引起的发病率很高的传染病。为了提高乙型肝炎的诊断率,近年来出现了许多敏感的特异的血清免疫学诊断方法。作为诊断乙型肝炎用的HBcAg多从病人血清或尸肝中提取,因来源困难故不能广泛使用。最近国外有人采用遗传工程的方法由大肠杆菌合成HBcAg代替由病人血清或肝脏提取的HBcAg,亦获得满意效果。我们采用此法也获得成功。在此项研究中,为了由克隆株取得含有HBcAg基因的DNA片段,我们采用缺口翻译法将已知HBc(adw)基因片段用同位素标记制成探针,并采用Southern吸印滤膜杂交法检测五株克隆DNA酶切片段,从中找到

关键词：酶切电泳滤膜杂交基因片段酶切片段 Southern HBcAg 放射自显影图谱 DNA 缺口翻译

Targeting in the System Described by Nonlinear Differential Equations

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Chinese Physics Letters 1996年第12期13卷 885-888页

作者： QIN Tuan-fa NI Wan-sun du Gong-huan CHEN guang-zhi Institute of Acoustics and State Key Laboratory of Modern Acoustics Nanjing UniversityNanjing 210093 Department of Physics Guangxi UniversityNanning 530004

A method which directs trajectories to the predetermined continuous target orbits in the system described by nonlinear differential equations with perturbation of available system parameters and the conditions for achieving targeting is *** target orbits may be the unstable solution or even may not be the solution of the *** experiments are given in the periodically forced Brusselator.

关键词： system Nonlinear perturbation

Research on shell-side heat and mass transfer with multi-component in LNG spiral-wound heat exchanger under sloshing conditions

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Petroleum Science 2024年第2期21卷 1333-1345页

作者： Xue-Ping du guang-Lei Yu Ya-Cheng Xu zhi-Jie Chen Nai-Liang Li Huan-guang Wang School of Low-carbon Energy and Power Engineering China University of Mining and TechnologyXuzhou221116JiangsuChina Key Laboratory of Thermo-Fluid Science and Engineering MOEXi'an Jiaotong UniversityXi'an710049ShaanxiChina Xi'an Aerospace Propulsion Test Technology Institute Xi'an710100ShaanxiChina

The spiral-wound heat exchanger(SWHE) is the primary low-temperature heat exchanger for large-scale LNG plants due to its high-pressure resistance, compact structure, and high heat exchange efficiency. This paper studied the shell-side heat and mass transfer characteristics of vapor-liquid two-phase mixed refrigerants in an SWHE by combining a multi-component model in FLUENT software with a customized multicomponent mass transfer model. Besides, the mathematical model under the sloshing condition was obtained through mathematical derivation, and the corresponding UDF code was loaded into FLUENT as the momentum source term. The results under the sloshing conditions were compared with the relevant parameters under the steady-state condition. The shell-side heat and mass transfer characteristics of the SWHE were investigated by adjusting the component ratio and other working conditions. It was found that the sloshing conditions enhance the heat transfer performance and sometimes have insignificant effects. The sloshing condition is beneficial to reduce the flow resistance. The comprehensive performance of multi-component refrigerants has been improved and the improvement is more significant under sloshing conditions, considering both the heat transfer and pressure *** results will provide theoretical support for the research and design of multi-component heat and mass transfer enhancement of LNG SWHE under ocean sloshing conditions.

关键词： Spiral-wound heat exchanger Sloshing conditions Two-phase flow Multi-component Heat and mass transfer

Effect of projectile parameters on opening behavior of PELE penetrating RC target

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Defence Technology（防务技术） 2021年第3期17卷 859-873页

作者： Li-zhi Xu Cheng-xin du Chun Cheng Xiao-dong Wang Jiang-bo Wang Zhong-hua du guang-fa Gao School of Mechanical Engineering Nanjing University of Science and TechnologyNanjing210094China

When a penetrator with enhanced lateral effect(PELE) impacts on a reinforced concrete(RC) target,the target is damaged with a large *** understanding of how PELE projectile parameters affect the opening dimension,is essential for effective design of the PELE *** this study,under the condition that the impact velocity and target parameters(strength and thickness) were fixed values,the important influence factors of the PELE(jacket wall thickness B,jacket material strength Y1,filling material strength Y2 and angle of monolithic jacket θ) were determined by a dimensional *** and simulations of the PELE penetrating the RC target were conducted to analyze the influence of these factors on opening diameter(D,an equivalent diameter under relative kinetic energy).Based on the test and simulation results,it is found that the influence of these factors B,Y1 and θ on the deformation mode of the jacket shows a similar trend:as values of the three factors decrease,the jacket deforms from small bending deformation to large one,and then to curling *** causes the opening diameter to first increase with the decrease of these three factors,and then *** is well known that the bending resistance of the jacket is related to these factors B,Y1 and θ.Therefore,a plastic limit bending moment(M0) of the jacket was quoted to characterize the influence of these factors on the bending deformation of the jacket and the opening diameter of the *** influence factor Y2 causes D to first increase with the increase of Y2,and then decreases.A formula was developed to predict the opening diameter,whose influence parameters were considered in a dimensionless *** has been shown that the dimensionless opening diameter D/d1 is dependent on two dimensionless parameters■ and■,where d1 and fc are the outer diameter of the projectile and the compressive strength of the target,respectively.

关键词： Penetrator with enhanced lateral effect Opening behaviour Reinforced concrete target Dimensional analysis