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Thermal Management Optimization of a Lithium-Ion Battery Module with Graphite Sheet Fins and Liquid Cold Plates

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Automotive Innovation 2020年第4期3卷 336-346页

作者： Guohua Wang qing gao Yuying Yan Yongzhen Wang State Key Laboratory of Automotive Simulation and Control Jilin UniversityChangchun 130025China Faculty of Engineering University of NottinghamNottingham NG72RDUK Department of Thermal Engineering Jilin UniveristyNanling CampusChangchun 130022China

Temperature uniformity of lithium-ion batteries and maintaining the temperature within the range for efficient operation are ***,Liquid cold plates are placed on the sides of a prismatic battery,and fins made of aluminum alloy or graphite sheets are applied between battery cells to improve the heat transfer *** a simulation model is built with 70 battery cells and 6 liquid cold plates,and the performance is analyzed according to the flow rate,liquid temperature,and discharge ***,the results show that temperature differences are mainly caused by the liquid cold *** fin surface determines the equivalent thermal conductivity of the *** graphite sheets have heterogeneous thermal conductivity,which help improve temperature uniformity and reduce the temperature *** lower density than the aluminum alloy,they offer a lower gravimetric power density for the same heat transfer *** addition to the equivalent thermal conductivity,the temperature difference between the cooling liquid and battery surface is an important parameter for temperature *** the fin thickness is found to be an effective way to reduce the temperature difference between the liquid and battery during cooling and improve the temperature uniformity.

关键词： Thermal management Lithium-ion battery Liquid cold plate Temperature uniformity

Fragmentation Energy-Saving Theory of Full Face Rock Tunnel Boring Machine Disc Cutters

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Chinese Journal of Mechanical Engineering 2017年第4期30卷 913-919页

作者： Zhao-Huang Zhang Guo-Fang Gong qing-Feng gao Fei Sun School of Energy Power and Mechanical EngineeringNorth China Electric Power UniversityBeijing 102206China State Key Laboratory of Fluid Power Transmission and Control Zhejiang UniversityHangzhou 310027China School of Foreign Languages North China Electric Power UniversityBeijing 102206China

Attempts to minimize energy consumption of a tunnel boring machine disc cutter during the process of fragmentation have largely focused on optimizing disc- cutter spacing, as determined by the minimum specific energy required for fragmentation; however, indentation tests showed that rock deforms plastically beneath the cutters. Equations for thrust were developed for both the traditional, popularly employed disc cutter and anew design based on three-dimensional theory. The respective energy consumption for penetration, rolling, and side-slip fragmentations were obtained. A change in disc-cutter fragmentation angles resulted in a change in the nature of the interaction between the cutter and rock, which lowered the specific energy of fragmentation. During actual field excavations to the same penetration length, the combined energy consumption for fragmentation using the newly designed cutters was 15% lower than that when using the traditional design. This paper presents a theory for energy saving in tunnel boring machines. Investigation results showed that the disc cutters designed using this theory were more durable than traditional designs, and effectively lowered the energy consumption.

关键词： Newly design Disc cutter Fragmentation Specific energy Energy consumption

DNA Damage-driven Inflammatory Cytokines:Reprogramming of Tumor Immune Microenvironment and Application of Oncotherapy

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Current Medical Science 2024年第2期44卷 261-272页

作者： Meng-jie WANG Yu XIA qing-lei gao Department of Obstetrics and Gynecology National Clinical Research Center for Obstetrics and GynecologyTongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430030China Key Laboratory of Cancer Invasion and Metastasis(Ministry of Education) Hubei Key Laboratory of Tumor Invasion and MetastasisTongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430030China

DNA damage occurs across tumorigenesis and tumor *** intrinsic DNA damage can not only increase the risk of mutations responsible for tumor generation but also initiate a cellular stress response to orchestrate the tumor immune microenvironment(TIME)and dominate tumor *** evidence documents that multiple signaling pathways,including cyclic GMP-AMP synthase-stimulator of interferon genes(cGAS-STING)and ataxia telangiectasia-mutated protein/ataxia telangiectasia and Rad3-related protein(ATM/ATR),are activated downstream of DNA damage and they are associated with the secretion of diverse *** cytokines possess multifaced functions in the anti-tumor immune ***,it is necessary to deeply interpret the complex TIME reshaped by damaged DNA and tumor-derived cytokines,critical for the development of effective tumor *** manuscript comprehensively reviews the relationship between the DNA damage response and related cytokines in tumors and depicts the dual immunoregulatory roles of these *** also summarize clinical trials targeting signaling pathways and cytokines associated with DNA damage and provide future perspectives on emerging technologies.

关键词： DNA damage tumor immune microenvironment inflammatory cytokines cancer therapy

2D-QSAR Studies on Triazolone Compounds Containing Benzenesulfonic Amide

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Chinese Journal of Structural Chemistry 2007年第8期26卷 883-888页

作者： WEI qing-Li gao Jun SUN Dao-Xing ZHANG Shu-Sheng College of Chemistry and Molecular Engineering Qingdao University of Science ＆ Technology Qingdao 266042 China

The geometry structures of 6 triazolone compounds containing benzenesulfonic amide were fully optimized with DFT （Density Functional Theory） method at the B3LYP/6-31G level, and the structural and electronic parameters of the compounds were calculated. The hydrophobic and topological parameters of the title compounds were calculated by HyperChem software. The mono- and bi-parametric models between the parameters and biological activity of the compounds were analyzed by Multiple Linear Regression method based on Hansch-Fujita model. The results show that the activities of the title compounds were increased with higher hydrophobic property logP and molecular volume V, lower molecular energy ETOTAL and electronegative of benzene ring Qph.

关键词： benzenesulfonic amide triazolone compounds 2D-QSAR DFT method

The upper bound on the tensor-to-scalar ratio consistent with quantum gravity

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Communications in Theoretical Physics 2021年第7期73卷 115-120页

作者： Lina Wu qing gao Yungui Gong Yiding Jia Tianjun Li School of Sciences Xi’an Technological UniversityXi’an 710021China School of Physical Science and Technology Southwest UniversityChongqing 400715China School of Physics Huazhong University of Science and TechnologyWuhanHubei 430074China CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China

We consider the polynomial inflation with the tensor-to-scalar ratio as large as possible which can be consistent with the quantum gravity(QG) corrections and effective field theory(EFT). To get a minimal field excursion ΔΦ for enough e-folding number N, the inflaton field traverses an extremely flat part of the scalar potential, which results in the Lyth bound to be violated. We get a CMB signal consistent with Planck data by numerically computing the equation of motion for inflaton Φ and using Mukhanov–Sasaki formalism for primordial spectrum. Inflation ends at Hubble slow-roll parameter ε_(1)^(H)=1 or a=0. Interestingly, we find an excellent practical bound on the inflaton excursion in the format a+b√r, where a is a tiny real number and b is at the order 1. To be consistent with QG/EFT and suppress the high-dimensional operators, we show that the concrete condition on inflaton excursion is M_(PI)/△_(Ф)<0.2×√10≈0.632. For n_(s)= 0.9649,N_(e)= 55, and M_(PI)/△_(Ф)<0.632 MPl, we predict that the tensor-to-scalar ratio is smaller than 0.0012 for such polynomial inflation to be consistent with QG/EFT.

关键词： polynomail inflation Lyth bound tensor-to-scalar ratio

Two New Butenolide Derivatives from Erigeron acer

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Chemical Research in Chinese Universities 2006年第1期22卷 33-35页

作者： WU Gang FEI Dong-qing gao Kun State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 P.R. China

Two new butenolide derivatives, named as erigeracerin A and efigeracefin B, which are a pair of epimers, were isolated from Erigeron acer. Their structures were elucidated by spectroscopic analysis including 2D NMR an... 详细信息

关键词： Erigeron acer Compositae Erigeracerin Butenolide derivatives

NONLINEAR VIBRATION ANALYSIS OF VISCOELASTIC CABLE WITH SMALL SAG

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Acta Mechanica Solida Sinica 2001年第4期14卷 317-322页

作者： Li Yinghui Jian Kailin gao qing Yin Xuegang Department of Applied Mechanics and Engineering Southwest Jiaotong UniversityChengdu 610031China Department of Engineering Mechanics Chongqing UniversityChongqing 400044China

Both the inplane and out-of-plane transverse vibrations of aviscoelastic cable subjected to an initial stress distributinguniform on the cross section are studied. The constitution of thecable material is as- sumed to be of the hereditary integral *** partial differential -integral equations of motion are derivedfirst. Then by applying Galerkin's method, the governing equationsare reduced to a set of second-order non- linear differential-integral equations which are solved by finite difference numericalintegration procedures. Finally, the effects of the viscosityparameter and the elastic parameter on the transient amplitudes ofthe first Mode are investigated by numerical simulation.

关键词： viscoelastic cable small sag integral constitutive law differential-integral equations

Dual-Hand Motion Capture by Using Biological Inspiration for Bionic Bimanual Robot Teleoperation

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Cyborg and Bionic Systems 2023年第1期4卷 93-105页

作者： qing gao Zhiwen Deng Zhaojie Ju Tianwei Zhang School of Electronics and Communication Engineering Shenzhen Campus of Sun Yat-sen UniversityShenzhenChina School of Computing University of PortsmouthPortsmouthUK Shenzhen Institute of Artificial Intelligence and Robotics for Society Chinese University of Hong KongShenzhenChina

Bionic bimanual robot teleoperation can transfer the grasping and manipulation skills of human dual hands to the bionic bimanual robots to realize natural and flexible *** motion capture of dual hands plays an important role in the *** motion information of dual hands can be captured through the hand detection,localization,and pose estimation and mapped to the bionic bimanual robots to realize the ***,although the motion capture technology has achieved great achievements in recent years,visual dual-hand motion capture is still a great ***,this work proposed a dual-hand detection method and a 3-dimensional(3D)hand pose estimation method based on body and hand biological inspiration to achieve convenient and accurate monocular dual-hand motion capture and bionic bimanual robot ***,a dual-hand detection method based on body structure constraints is proposed,which uses a parallel structure to combine hand and body relationship ***,a 3D hand pose estimation method with bone-constraint loss from single RGB images is ***,a bionic bimanual robot teleoperation method is designed by using the proposed hand detection and pose estimation *** results on public hand datasets show that the performances of the proposed hand detection and 3D hand pose estimation outperform state-of-the-art *** results on a bionic bimanual robot teleoperation platform shows the effectiveness of the proposed teleoperation method.

关键词： Capture Dual operation

Parameter optimization model in electrical discharge machining process

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第1期9卷 104-108页

作者： qing gao Qin-he ZHANG Shu-peng SU Jian-hua ZHANG School of Mechanical Engineering Shandong University Jinan 250061 China

Electrical discharge machining (EDM) process, at present is still an experience process, wherein selected parameters are often far from the optimum, and at the same time selecting optimization parameters is costly and time consuming. In this paper, artificial neural network (ANN) and genetic algorithm (GA) are used together to establish the parameter optimization model. An ANN model which adapts Levenberg-Marquardt algorithm has been set up to represent the relationship between material removal rate (MRR) and input parameters, and GA is used to optimize parameters, so that optimization results are obtained. The model is shown to be effective, and MRR is improved using optimized machining parameters.

关键词： Electrical discharge machining (EDM) Genetic algorithm (GA) Artificial neural network (ANN) Levenberg- Marquardt algorithm