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Journal of Thermal Science 2021年第2期30卷 432-440页

作者： WANG Haitao tao tao MEI Xuesong WANG Haijun GU Hongfang State Key Laboratory for Manufacturing Systems Engineering Xi'an Jiaotong UniversityXi'an 710049China Shaanxi Key Laboratory of Intelligent Robots School of Mechanical EngineeringXi'an Jiaotong UniversityXi'an 710049China State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong UniversityXi'an 710049China

In this paper,the condensation heat transfer characteristics of parallel flow and counter flow inside an inclined wave-finned flat tube is investigated *** condensation heat transfer coefficients are analyzed based on the experimental *** of experiments show that condensation heat transfer coefficient decreases as the temperature difference Δt=ts-tw increases and mass flow rate *** parallel flow has a similar development with the counter flow,and the condensation heat transfer coefficient of counter flow is less than that of parallel flow under the same air cooling *** addition,condensation heat transfer coefficient correlations are also obtained under experimental *** calculations agree well with the measured data and the agreement is seen to be within ±4% for the parallel flow and ±5% for the counter flow.

关键词： condensation heat transfer wave-finned fiat tube modified model parallel flow counter flow

Laser pulse shape designer for direct-drive inertial confinement fusion implosions

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高功率激光科学与工程:英文版 2023年第3期11卷 76-85页

作者： tao tao Guannan Zheng Qing Jia Rui Yan Jian Zheng Department of Plasma Physics and Fusion Engineering and CAS Key Laboratory of Geospace Environment University of Science and Technology of ChinaHefeiChina Department of Modern Mechanics University of Science and Technology of ChinaHefeiChina Collaborative Innovation Center of IFSA Shanghai Jiao Tong UniversityShanghaiChina

Pulse shaping is a powerful tool for mitigating implosion instabilities in direct-drive inertial confinement fusion(ICF).However,the high-dimensional and nonlinear nature of implosions makes the pulse optimization quite *** this research,we develop a machine-learning pulse shape designer to achieve high compression density and stable *** facility-specific laser imprint pattern is considered in the optimization,which makes the pulse design more *** designer is applied to the novel double-cone ignition scheme,and simulation shows that the optimized pulse increases the areal density expectation by 16%in one dimension,and the clean-fuel thickness by a factor of four in two *** pulse shape designer could be a useful tool for direct-drive ICF instability control.

关键词： double-cone ignition hydrodynamics instability machine-learning optimization pulse shape optimization

微波法超快制备泡沫镍负载的Co/Zn氧化物增强硫离子氧化反应活性

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化学研究与应用 2024年第9期36卷 2056-2063页

作者：刘崇菠杨茗安琪唐相民虞淑敏高涛涛陈渝赵虔成都大学机械工程学院四川成都610106 重庆新天地环境检测技术有限公司重庆401120 成都大学高等研究院四川成都610106

本文通过微波法超快速制备了泡沫镍(NF)负载的Co/Zn复合氧化物(Co-Zn/NF)。XRD测试表明生成的Co/Zn复合氧化物具有低结晶度。采用线性扫描伏安法(LSV)测试了Co-Zn/NF在碱性条件下的电催化硫离子氧化性能。与泡沫镍负载的单金属氧化物(Co... 详细信息

本文通过微波法超快速制备了泡沫镍(NF)负载的Co/Zn复合氧化物(Co-Zn/NF)。XRD测试表明生成的Co/Zn复合氧化物具有低结晶度。采用线性扫描伏安法(LSV)测试了Co-Zn/NF在碱性条件下的电催化硫离子氧化性能。与泡沫镍负载的单金属氧化物(Co/NF和Zn/NF)相比,Co-Zn/NF表现出更好的催化性能。在含有1 mol·L^(-1)Na2S和1 mol·L^(-1)NaOH的电解液中,Co-Zn/NF达到100 m A·cm^(-2)的电流密度所需的电位仅为0.28 V vs RHE,并且在恒定100 m A·cm^(-2)的电流密度下,长时间工作35小时后仍保持高的催化性能。此外,组装非对称电解槽(阳极:硫离子氧化反应(sulfion oxidation reaction,SOR)用1 mol·L^(-1)Na2S和1mol·L^(-1)NaOH为电解质,阴极:析氢反应(hydrogen evolution reaction,HER)用1 mol·L^(-1)Na OH为电解质)进行双电极硫氧化辅助电解水制氢测试,与传统的碱性电解水相比,达到100 m A·cm^(-2)电流密度所需的能耗降低了46%。本工作为低能耗电化学制氢提供了一种新思路,并证明了SOR耦合HER电解水制氢具有实际应用的可行性。

关键词：微波加热钴/锌复合氧化物硫氧化反应低能耗制氢

Study of detection performance of passive bistatic radars based on FM broadcast

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Journal of Systems Engineering and Electronics 2007年第1期18卷 22-26页

作者： Shan tao tao Ran Wang Yue Zhou Siyong Dept. of Electronic Engineering Beijing Inst. of Technology Beijing 100081 P. R. China

The passive bistatic radar based on the FM broadcast has inherent superiority with respect to its survivability. In this article, the ambiguity function （AF） and the cross ambiguity function （CAF） of the FM radio signal are analyzed and illustrated. The Kolmogorov Smirnov （K-S） test verifies that the amplitude probability density function of the CAF side lobes is exponential; the distribution of the target is also deduced. Finally, the detection performance of the passive radar is studied, and the result shows that this new type bistatic radar has favorable detection capability.

关键词： Bistatic radar Ambiguity function Cross ambiguity function Probability density function (PDF)

二面体群D_(3)的同构——从一个误解说起

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红河学院学报 2024年第2期22卷 127-128页

作者：林记赵涛涛梅金金阜阳师范大学数学与统计学院安徽阜阳236037

从二面体群D_(3)的非交换性的一个错误解法出发,研究D_(3)的矩阵表示,证明了D_(3)、具体的矩阵乘法群和三次对称群的同构,由此验证了D_(3)的生成元和生成关系.

关键词：二面体群矩阵表示三次对称群生成元生成关系

Simulation of 3D Flow in Turbine Blade Rows including the Effects of Coolant Ejection

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Journal of Thermal Science 2008年第2期17卷 111-115页

作者： Jian-Jun LIU Bai-tao AN Yun-tao ZENG Institute of Engineering Thermophysics Chinese Academy of SciencesP. O. Box 2706 Beijing 100080 CHINA

This paper describes the numerical simulation of three-dimensional viscous flows in fir-cooled turbine blade rows with the effects of coolant ejection. A TVD Navier-Stokes flow solver incorporated with Baldwin-Lomax turbulence model and multi-grid convergence acceleration algorithm are used for the simulation. The influences of coolant ejection on the main flow are accounted by volumetric coolant source terms. Numerical results for a four-stage turbine are presented and discussed.

关键词： Numerical Simulation Air-Cooled Turbine Blade Row Coolant Ejection

不同剂量奥氮平治疗老年抑郁障碍伴焦虑痛苦患者的疗效

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医学临床研究 2024年第3期41卷 336-339页

作者：陶涛张博宇郑爽张许来安徽医科大学附属心理医院/安徽省精神卫生中心/合肥市第四人民医院焦虑抑郁科安徽合肥230000

【目的】探讨不同剂量奥氮平治疗老年抑郁障碍伴焦虑痛苦患者的疗效及对患者躯体症状及睡眠质量的影响。【方法】本院就诊的120例老年抑郁障碍伴焦虑痛苦患者,随机分为观察组与对照组,每组60例。两组均给予帕罗西汀治疗,对照组患者在此... 详细信息

【目的】探讨不同剂量奥氮平治疗老年抑郁障碍伴焦虑痛苦患者的疗效及对患者躯体症状及睡眠质量的影响。【方法】本院就诊的120例老年抑郁障碍伴焦虑痛苦患者,随机分为观察组与对照组,每组60例。两组均给予帕罗西汀治疗,对照组患者在此基础上给予大剂量奥氮平(10 mg/次),观察组给予小剂量奥氮平(2.5 mg/次)治疗,两组均治疗3个月。比较两组的疗效及不良反应发生情况;比较两组患者治疗前后的汉密尔顿抑郁量表(HAMD)评分、汉密尔顿焦虑量表(HAMA)评分、躯体症状严重程度量表(PHQ-15)评分、匹兹堡睡眠质量指数(PSQI)评分及空腹血糖(FBG)、总胆固醇(TC)、甘油三酯(TG)水平。【结果】两组治疗总有效率比较,差异无统计学意义(P>0.05)。两组治疗前及治疗后HAMD评分、HAMA评分、PHQ-15评分比较,差异均无统计学意义(P>0.05);两组治疗后HAMD评分、HAMA评分、PHQ-15评分显著低于治疗前(P0.05),两组治疗后PSQI各项评分及总分显著低于治疗前(P0.05);治疗后,对照组FBG、TC、TG显著高于治疗前,且对照组显著高于观察组(P<0.05)。观察组不良反应总发生率显著低于对照组(P<0.05)。【结论】奥氮平可改善老年抑郁障碍伴焦虑痛苦患者抑郁、焦虑、躯体症状和睡眠质量,使用小剂量奥氮平可减少高血糖、高脂血症发生的风险,且不良反应少。

关键词：奥氮平/投药和剂量抑郁/并发症焦虑/并发症老年人治疗结果

维普期刊数据库评论

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基于改进灰狼算法的LQR优化控制方法研究

计算机仿真 2024年第2期41卷 339-343,372页

作者：宋涛涛李艳萍李洪港山东建筑大学信息与电气工程学院山东济南250101

针对二级倒立摆在使用LQR(线性二次调节器)进行优化控制过程中,由经验选取的加权矩阵Q和R参数存在着较大的随机性和不稳定性问题,提出了改进灰狼算法优化控制器加权矩阵Q和R的方法。为灰狼算法设计了基于二次余弦规律的自适应收敛因子a... 详细信息

针对二级倒立摆在使用LQR(线性二次调节器)进行优化控制过程中,由经验选取的加权矩阵Q和R参数存在着较大的随机性和不稳定性问题,提出了改进灰狼算法优化控制器加权矩阵Q和R的方法。为灰狼算法设计了基于二次余弦规律的自适应收敛因子a和增强α狼适应度值fα的比例权重方法。增强了算法迭代前期的全局搜索能力和后期的收敛速度,通过MATLAB/Simulink仿真,并与传统灰狼算法相比较,得出改进算法能够有效降低倒立摆回归平衡状态时的超调量,更快达到稳定状态,使控制效果更加理想。

关键词：灰狼算法线性二次调节器二级倒立摆收敛因子适应度值

Risk factors and risk index of cardiac events in pregnant women with heart disease

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Chinese Medical Journal 2012年第19期125卷 3410-3415页

作者： LIU Hua HUANG tao-tao LIN Jian-hua Department of Obstetrics and Gynecology Renji Hospital Shanghai Jiao Tong University School of Medicine Shanghai Obstetrical Cardiology Intensive Care Center Shanghai 200127 China

Background Pregnant women with heart disease are at high risk. Studies of risk factors of these patients are of great significance to improve maternal and fetal outcomes. In this paper, we try to discuss the main risk factors of cardiac events in pregnant women with heart disease and to establish a risk assessment system. Methods A retrospective analysis was carried out for pregnancies in 1741 women with heart disease who delivered in Shanghai Obstetrical Cardiology Intensive Care Center between January 1993 and September 2010. A Logistic regression model was used to identify independent risk factors of cardiac events and calculate the risk index in pregnant women with heart disease. Results The composition of heart disease in pregnant women was arrhythmia （n=662, 38.00%）, congenital heart disease （CHD; n=529, 30.40%）, cardiomyopathy （n=327, 18.80%）, rheumatic heart disease （RHD; n=151, 8.70%）, and cardiopathy induced by pre-eclampsia （n=53, 3.00%）. Main cardiac events were heart failure （n=110, 6.32%）, symptomatic arrhythmia needing medication （n=43, 2.47%）, cardiac arrest （n=2, 0.11%）, syncope （n=3, 0.17%）, and maternal death （n=10, 0.57%）. Six independent risk factors to predict cardiac events in pregnant women with heart disease were cardiac events before pregnancy （heart failure, severe arrhythmia, cardiac shock, etc., P=0.000）, New York Heart Association （NYHA） class 〉11 （m=0.000）, oxygen saturation 〈90% （P=0.018）, pulmonary artery hypertention （PAH）〉50 mmHg （P=0.025）, cyanotic heart disease without surgical correction （P=-0.015）, and reduced left ventricular systolic function （ejection fraction 〈40%, P=0.003）. Every risk factor was calculated as 1 score. The incidence of cardiac events in patients with scores 0, 1, 2, 3, and 〉4 was 2.10%, 31.61 %, 61.25%, 68.97%, and 100.00% respectively. Conclusions Pregnancy with heart disease could lead to undesirable pregnancy outcomes. The risk of cardiac events in pregnant women with heart disease could be assessed by

关键词： pregnancy heart disease risk factor risk index

Identification of sources of pollution and contamination in water distribution networks based on pattern recognition

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2012年第7期13卷 559-570页

作者： tao tao Ying-jun LU Xiang FU Kun-lun XIN College of Environmental Science and Engineering Tongji University Shanghai 200092China State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan UniversityWuhan 430072China

An intrusion of contaminants into the water distribution network (WDN) can occur through storage tanks (via animals, dust-carrying bacteria, and infiltration) and pipes. A sensor network could yield useful observations that help identify the location of the source, the strength, the time of occurrence, and the duration of contamination. This paper proposes a methodology for identifying the contamination sources in a water distribution system, which identifies the key characteristics of contamination, such as location, starting time, and injection rates at different time intervals. Based on simplified hypotheses and associated with a high computational efficiency, the methodology is designed to be a simple and easy-to-use tool for water companies to ensure rapid identification of the contamination sources, The proposed methodology identifies the characteristics of pollution sources by matching the dynamic patterns of the simulated and measured concentrations. The application of this methodology to a literature network and a real WDN are illustrated with the aid of an example. The results showed that if contaminants are transported from the sources to the sensors at intervals, then this method can identify the most possible ones from candidate pollution sources. However, if the contamination data is minimal, a greater number of redundant contamination source nodes will be present. Consequently, more data from different sensors obtained through network monitoring are required to effectively use this method for locating multi-sources of contamination in the WDN.

关键词： Contamination Identification Water distribution network (WDN)