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A SIMPLIFIED THEORY FOR UNSTEADY AERODYNAMIC FORCES ACTING ON AN AIRFOIL FLYING ABOVE SEA-WAVES

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Journal of Hydrodynamics 2004年第1期16卷 39-44页

作者： SHENGQi-hu WUDe-ming ZHANGLiang CollegeofShipbuildingEngineering HarbinEngineeringUniversity.Harbin150001China

A simplified theoretical method based on the quasi-steady wing theory wasproposed to study the unsteady aerodynamic forces acting on an airfoil flying in non-uniform *** between the theoretical results and the numerical results based on nonlinear theory wasmade. It shows that the simplified theory is a good approximation for the investigation of theaerodynamic characteristics of an airfoil flying above sea-waves. From on the simplified theory itis also found that an airfoil can get thrust from a wave-disturbed airflow and thus the total dragis reduced. And the relationship among the thrust, the flying altitude, the flying speed and thewave parameters was worked out and discussed.

关键词： airfoil unsteady aerodynamic force sea-wave drag reduction quasi-steadywing theory

Spectral Analysis and Long-time Asymptotics for the Coherently-coupled Nonlinear Schrödinger System

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Acta Mathematica Sinica,English Series 2022年第11期38卷 2090-2114页

作者： ming ming CHEN Xian Guo GENG ke Dong WANG School of Mathematics and Statistics Zhengzhou UniversityZhengzhou 450001P.R.China

On the basis of the spectral analysis of the 4×4 matrix Lax pair,the initial value problem of the coherently-coupled nonlinear Schrödinger system is transformed into a 4×4 matrix Riemann–Hilbert *** using the nonlinear steepest decent method,the long-time asymptotics of the solution of the initial value problem for the coherently-coupled nonlinear Schrödinger system is obtained through deforming the Riemann–Hilbert problem into a solvable model one.

关键词： Coherently-coupled nonlinear Schrödinger system nonlinear steepest descent method long-time asymptotics

Improvement of mechanical property and corrosion resistance of Mg-Zn-Nd alloy by bi-direction drawing

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Journal of Materials Science & Technology 2021年第22期81卷 88-96页

作者： ming Gao ke Yang Lili Tan Zheng Ma School of Materials Science and Engineering University of Science and Technology of ChinaShenyang110016China Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang110016China

Mg-Zn-Nd alloy is a promising biodegradable metal material for surgical staples during the reconstruction of digestive tract due to its good biocompatibility and suitable mechanical ***,its deformation property and corrosion resistance should be improved to make better safety and effectiveness of *** the present study,bi-direction drawing was adopted to maintain the initial texture characteristics,and improve mechanical property and corrosion resistance of Mg-2Zn-0.5Nd *** results showed that the microstructure after bi-direction did not change too much,but the texture could maintain its initial *** ductility of the alloy with 60%accumulative area reduction after bi-direction drawing was increased by 70%,indicating that an outstanding deformation property of Mg-Zn-Nd alloy can be obtained by bi-direction *** corrosion resistance was also improved after bi-direction drawing compared with that under single direction drawing.

关键词： Bi-direction drawing Texture Mechanical property Corrosion resistance

Integrated Planning of an Active Distribution Network and DG Integration in Clusters Considering a Novel Formulation for Reliability Assessment

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CSEE Journal of Power and Energy Systems 2023年第2期9卷 561-576页

作者： Di hu Lei Sun ming Ding School of Electrical Engineering and Automation Hefei University of TechnologyHefei 230009China Anhui Provincial Laboratory of Renewable Energy Utilization and Energy Saving Hefei University of TechnologyHefei 230009China

The concept of DG clusters is introduced with highly penetrated integration of distributed generation(DG)into active distribution networks(ADNs).DG clusters are referred to as parts of an ADN,including DGs,distribution lines and *** formation of DG clusters helps to optimally dispatch DG outputs within *** this regard,an integrated planning strategy of ADNs and DGs in cluster(IPNDGC)is *** order to guarantee that the planning strategy meets the reliability requirements,a reliability assessment is considered in the proposed ***,reliability assessment is generally accomplished according to a fixed network topology and known DG allocation,which makes it difficult to integrate reliability into planning *** deal with this difficulty,a novel formulation method for reliability assessment is proposed considering the network topology uncertainties and isolated operating probabilities of DG *** reliability index(RI)represented by expected customer interruption cost(ECOST)is employed in the proposed planning *** planning model is formulated as a mixed integer second order conic programming planning *** actual distribution system is employed to illustrate the accuracy and efficiency of the proposed planning model.

关键词： DG cluster distribution network planning reliability

Bioinspired Polarized Skylight Orientation Determination Artificial Neural Network

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Journal of Bionic Engineering 2023年第3期20卷 1141-1152页

作者： huaju Liang Hongyang Bai ke hu Xinbo Lv School of Energy and Power Engineering Nanjing University of Science and TechnologyNanjing210094China Neuromorphic Computing Laboratory China Nanhu Academy of Electronics and Information TechnologyJiaxing314001China Guidance Radar General Department Xi’an Electronic Engineering Research InstituteXi’an710100China School of Automation Nanjing University of Science and TechnologyNanjing210094China

This paper proposes an artificial neural network to determine orientation using polarized skylight. This neural network has specific dilated convolution, which can extract light intensity information of different polarization directions. Then, the degree of polarization (DOP) and angle of polarization (AOP) are directly extracted in the network. In addition, the exponential function encoding of orientation is designed as the network output, which can better reflect the insect’s encoding of polarization information and improve the accuracy of orientation determination. Finally, training and testing were conducted on a public polarized skylight navigation dataset, and the experimental results proved the stability and effectiveness of the network.

关键词： Polarized light navigation Orientation determination Artificial neural network

Mitochondrial DNA-triggered innate immune response:mechanisms and diseases

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Cellular & Molecular Immunology 2023年第12期20卷 1403-1412页

作者： ming-ming hu Hong-Bing Shu Department of Infectious Diseases Medical Research InstituteZhongnan Hospital of Wuhan UniversityFrontier Science Center for Immunology and MetabolismTaikang Center for Life and Medical SciencesCollege of Life SciencesWuhan UniversityResearch Unit of Innate Immune and Inflammatory DiseasesChinese Academy of Medical SciencesWuhan430072China Research Unit of Innate Immune and Inflammatory Diseases Chinese Academy of Medical SciencesWuhan430072China

Various cellular stress conditions trigger mitochondrial DNA(mtDNA)release from mitochondria into the *** released mtDNA is sensed by the cGAS-MITA/STING pathway,resulting in the induced expression of type I interferon and other effector *** processes contribute to the innate immune response to viral infection and other stress *** deregulation of these processes causes autoimmune diseases,inflammatory metabolic disorders and ***,the cGAS-MITA/STING pathway is a potential target for intervention in infectious,inflammatory and autoimmune diseases as well as *** this review,we focus on the mechanisms underlying the mtDNA-triggered activation of the cGAS-MITA/STING pathway,the effects of the pathway under various physiological and pathological conditions,and advances in the development of drugs that target cGAS and MITA/STING.

关键词： Mitostress Virus Innate immunity Disease MITA/STING

The Lie Group and Integrability of the Fisher Type Travelling Wave Equation

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Acta Mathematicae Applicatae Sinica 2009年第2期25卷 305-320页

作者： ming-hui Liu ke-ying Guan Department of Mathematics Beijing Jiaotong University Beijing 100044 China

For the Fisher-type wave equation, which has two stable states and one unstable state, it is proved that only in two particular cases, the corresponding travelling wave equation admits a double parameter Lie group, and based on a method different to the traditional one, its two independent first integrals are given. It is proved further that in the two integrable cases, the different bounded and non-trivial travelling wave solutions, which are corresponding the invariant manifolds of the corresponding equation under the Lie transformation, can be expressed with elementary functions although they cannot be obtained directly from the two independent first integrals.

关键词： Fisher type wave equation travelling wave Lie group first integral invariant manifold

Contamination of Prohibited Substances in Various Food Products in Guangzhou, China

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Biomedical and Environmental Sciences 2020年第1期33卷 68-71页

作者： MhuNGU Florence hu ke Qi ZHANG Wei Wei ZHOU Zhi Feng SHI ming LIU Yun Gang School of Public Health Southern Medical UniversityGuangzhou 510515GuangdongChina Guangzhou Centre for Disease Control and Prevention Guangzhou 510440GuangdongChina Department of Environmental and Occupational Health School of Public HealthGuangdong Medical UniversityDongguan 523808GuangdongChina

The use of antibiotics to maintain animal health has widely been practiced,for both therapeutic and prophylactic *** with the identification of serious adverse effects of some antibiotics on human and domestic animals... 详细信息

关键词： Contamination of Prohibited Substances Various Food Products Guangzhou China

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DSA静脉造影诊断下肢静脉疾病

医学影像学杂志 2011年第1期21卷 127-129页

作者：孙志先胡可明张毅汪志超陈康海汪长胜江苏省连云港市第二人民医院放射科江苏连云港222002

目的:探讨DSA下肢深静脉造影诊断下肢静脉疾病的价值。方法:56例(66条)下肢静脉病变的患者在DSA下行下肢深静脉顺、逆行造影,其中16例行经皮穿刺腘静脉插管造影。结果:根据主要X线表现将下肢静脉疾病分为:下肢静脉曲张10条(15%)、下肢... 详细信息

目的:探讨DSA下肢深静脉造影诊断下肢静脉疾病的价值。方法:56例(66条)下肢静脉病变的患者在DSA下行下肢深静脉顺、逆行造影,其中16例行经皮穿刺腘静脉插管造影。结果:根据主要X线表现将下肢静脉疾病分为:下肢静脉曲张10条(15%)、下肢深静脉瓣膜功能不全34条(52%)和深静脉血栓形成22条(33%)。根据深静脉逆流程度分为:Ⅰ级10条,Ⅱ级14条,Ⅲ级8条,Ⅳ级2条。结论:在DSA下行下肢深静脉造影,能为临床提供可靠的影像学诊断依据,以利治疗方案的选择。

关键词：下肢静脉病变静脉造影数字减影血管造影