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| 1 | Identification of major histocompatibility complex class I alleles in Chinese rhesus macaques显示文摘主要 histocompatibility 建筑群(MHC ) 一级信息为在 HIV 种痘和生物医学的模型理解有免疫力的回答的变化是重要的。在这研究, 9 Mamu -- A 和 13 Mamu-B 等位基因从 10 只中国起源的罗猴猕猴的 cDNA 产品被识别。除了被其它报导了的二等位基因,八是新奇的, 12 扩大了在 GenBank 是可得到的部分序列。MHC 一级抗原的另外的信息可能对在人的疾病研究的中国猕猴的可获得性有益。而且,领先的肽的多型性和在 α1 领域的自然漂亮受体识别主题两个都暗示那 Mamu -- A 和 Mamu-B 分子力量玩在自然漂亮房间的天生的有免疫力的回答给角色调音。 | Dongyun Ouyang Lihui Xu Zhengxi Dai Huanjing Shi Gaohong Zhang Yongtang Zheng Xianhui He | 2008 | Acta Biochimica et Biophysica Sinica2008，40，11： | 4 |
| 2 | Multi-objective Optimization Design of Inset-surface Permanent Magnet Machine Considering Deterministic and Robust Performances显示文摘The inset-surface permanent magnet(ISPM)machine can achieve the desired electromagnetic performance according to the traditional deterministic design.However,the reliability and quality of the machine may be affected by the essential manufacturing tolerances and unavoidable noise factors in mass production.To address this weakness,a comprehensive multi-objective optimization design method is proposed,in which robust optimization is performed after the deterministic design.The response surface method is first adopted to establish the optimization objective equation.Afterward,the sample points are obtained via Monte Carlo simulation considering the design-variable uncertainty.The Design for Six Sigma approach is adopted to ensure the robustness of the design model.Furthermore,the barebones multi-objective particle swarm optimization algorithm is used to obtain a compromise solution.A prototype is manufactured to evaluate the effectiveness of the proposed method.According to the finite-element analysis and experimental tests,the electromagnetic performance and reliability of the machine are significantly enhanced with the proposed method. | Gaohong Xu Zexin Jia Wenxiang Zhao Qian Chen Guohai Liu | 2021 | Chinese Journal of Electrical Engineering2021，7，3： | 2 |
| 3 | Competing reduction induced homogeneous oxygen doping to unlock MoS_(2)basal planes for faster polysulfides conversion显示文摘The parasitic polysulfides shuttle effect greatly hinders the practical application of lithium sulfur batteries,and this issue can be addressed by promoting polysulfides conversion with catalytic materials such as Mo S_(2).However,the catalytic activity of Mo S_(2)mainly relies on edge sites,but is limited by inert basal planes.We herein report a novel,facile,ethylene glycol enabled competing reduction strategy to dope Mo S_(2)homogeneously with oxygen atoms so that its inert basal planes can be unlocked.Ethylene glycol works as a reducing agent and competes with thiourea to react with ammonium molybdate,leading to insufficient sulfuration of Mo,and consequent formation of O-Mo S_(2).Our theoretical and experimental investigations indicate that the homogeneously distributed O dopants can create abundant adsorption/-catalytic sites in the Mo S_(2)basal planes,enlarge the inter-plane distance to promote ion transport,and thus enhance the catalytic conversion of polysulfides.The oxygen doped Mo S_(2)(O-Mo S_(2))is supported on carbon nanosheets(CNS)and the composite(O-Mo S_(2)/CNS)is employed to modify the separator of Li-S battery.It gives the battery an initial discharge capacity of 1537 m Ah g-1at 0.2 C,and the battery retains a discharge capacity of 545 m Ah g-1after ultra-long 2000 cycles at 1 C,corresponding to a very small cyclic decay rate of 0.0237%.Even under a raising sulfur loading of 8.2 mg cm^(-2),the Li-S battery also delivers a high discharge capacity(554 m Ah g^(-1))with outstanding cycle stability(84.6%capacity retention)after 100 cycles at 0.5 C.Our work provides a novel,facile approach to fabricate highly catalytically active oxygen-doped Mo S_(2)for advanced Li-S batteries. | Da Lei Wenzhe Shang Xu Zhang Yongpeng Li Xiaoshan Shi Shaoming Qiao Qian Wang Qiang Zhang Ce Hao Hui Xu Guohua Chen Gaohong He Fengxiang Zhang | 2022 | Journal of Energy Chemistry2022，31，10： | 1 |
| 4 | Torque Calculation of Five-Phase Synchronous Reluctance Motors With Shifted-Asymmetrical-Salient-Poles Under Saturation Condition显示文摘In traditional analytical method(AM),the magnetic saturation is always ignored to simplify the calculation process.However,synchronous reluctance motors(SynRMs)often operate around saturation point to achieve higher torque density.Therefore,a new AM is proposed,in which the saturation of stator iron has been considered.The key of the proposed method includes a saturation factor,and an iterative method is adopted to compute the saturation factor in the SynRM by increasing the air-gap length.Especially,the proposed AM can be applied to a SynRM even with shifted-asymmetrical-salient-poles.In the process of AM,the expression of stator magnetomotive force(MMF)is built firstly.Additionally,the air-gap density including slotting effect and salient-poles is calculated.Then,the rotor MMF under saturation of the stator iron is obtained.Therefore,the precision of the instantaneous torque can be improved significantly.Eventually,by the verification of finite elements method(FEM)and experiments,the torque performance of SynRMs with shifted asymmetrical rotor can be predicted accurately by the proposed AM. | Qian Chen Xuping Shi Gaohong Xu Wenxiang Zhao | 2020 | CES Transactions on Electrical Machines and Systems2020，4，2： | 1 |
| 5 | Study of trappinglevels in a - Hgl2 crystals by UV and isothermalcurrentmeasurements 显示文摘 | Gang Xu Wanqi Jie Gaohong Li | 2010 | Nucl Instrum MethodsA2010，613，2： | 1 |
| 6 | An Improved Resistance Model for Gas Permeation in Composite Membranes显示文摘 | He Gaohong Huang Xiangyang Xu Renxian | 1996 | JMembrSci1996，118，1： | 1 |
| 7 | Improvement Torque Performances of Interior Permanent-Magnet Machines显示文摘Due to their excellent efficiency,power density and constant power speed region,interior permanent-magnet(IPM)machines are very suitable for electric vehicles(EVs).This paper proposed a new IPM rotor topology,which can offer high reluctance torque,wide constant power speed range and excellent overload capability.Besides,five rotor topologies with integral-slot distributed-windings IPM machines,including four existing IPM topologies and the proposed IPM topology,are designed optimally.Their characteristics,which include d-q axis inductances,saliency ratios,electromagnetic torques,corresponding torque ripples,back-electromotive forces(EMFs),overload capabilities and flux weakening performances are evaluated quantitatively.Finally,a three phase 48s8p hybrid rotor PM machine is built to verify the performances of the proposed IPM machine.This work provides some general concepts for machine developers who are willing to build IPM machines for high-performance EV applications. | Junqiang Zheng Wenxiang Zhao Christopher H.T.Lee Jinghua Ji Gaohong Xu | 2019 | CES Transactions on Electrical Machines and Systems2019，3，1： | 0 |
| 8 | Lightweight detection method for lotus seedpod in natural environment显示文摘In order to solve the problems of the current target detection algorithms,such as poor discrimination of occluded targets,multiple parameters,complex networks,large amounts of computation,and not conducive to the deployment of mobile terminals,a lightweight lotus seedpod detection method based on YOLOv5s model was proposed in this study.First,the dataset was augmented by using a combination of offline and online augmentation,which improved the adaptability and robustness of the model in complex environments.Then,a lightweight Ghost convolution module was introduced to replace the original convolution,and a lightweight bidirectional feature pyramid network was designed,which could enhance the feature extraction and fusion capability of the network and reduce the amount of calculation and model size;On this basis,the combination of WIoU loss function and Mish activation function was adopted to improve the accuracy of feature extraction.Finally,the knowledge distillation training strategy was used to ensure the proposed lightweight model has the learning ability of a complex network model,improving the recall and precision of model detection.The results of the ablation study show that the proposed method effectively improves the detection performance of the YOLOv5s model for lotus seedpods.The mean average precision of the improved model was 89.7%,compared with the original YOLOv5s model increased by 2.8%,and the parameters and FLOPs were reduced by 2.36M and 7.3G,respectively.Compared with other detection algorithm models,the proposed algorithm model has the advantages of less computation,smaller model size,and higher detection precision.Therefore,the proposed improved optimization method based on the YOLOv5s model can effectively detect lotus seedpods,which provides theoretical research and technical support for intelligent picking of lotus seedpods in the actual operating environment. | Tao Tang Xu Wang Zenghong Ma Weiwei Hong Gaohong Yu Bingliang Ye | 2023 | International Journal of Agricultural and Biological Engineering2023，16，6： | 0 |
| 9 | Design and experimental study of the end-effector for broccoli harvesting显示文摘The end-effector is an important part of the broccoli harvesting robot.Aiming at the physical characteristics of a large broccoli head and thick stem,a spherical cutting tool broccoli harvesting end-effector was designed in this study.First,the physical characteristics of broccoli were tested,and physical parameters such as the broccoli head diameter and stem diameter of broccoli were measured.The maximum cutting force of broccoli stems under different cutting angles was tested.Second,according to the physical characteristics and harvesting process of broccoli,the end-effector was designed,and the mathematical model of kinematics and dynamics was established.Based on the results of dynamic analysis,the end-effector rod was optimized,and the unilateral width of the slider was 40 mm,the length of the connecting rod was 120 mm,and the length of the crank was 42 mm.The mechanism needed an external driving force of 140.54 N to cut the broccoli stem.Therefore,a 32 mm cylinder with a load rate of 50%was selected as the power source.Finally,the feasibility of the broccoli harvesting end-effector was verified by the harvesting test.Experiments showed that the overall harvesting success rate of the end-effector is 93.3%,and the smoothness rate of the stem section is 83.3%.The harvesting performance of the broccoli end-effector was verified.This lays a foundation for agricultural robots to harvest broccoli. | Xiong Zhao Gangji Xu Pengfei Zhang Gaohong Yu Yadan Xu | 2024 | International Journal of Agricultural and Biological Engineering2024，17，1： | 0 |
| 10 | Vibration and Noise Optimization of New Asymmetric Modular PMaSynRM显示文摘An optimized structure to weaken the vibration and noise of a new asymmetric permanent magnet-assisted synchronous reluctance motor(PMaSynRM)is proposed.The new asymmetric PMaSynRM has the advantages of a low torque ripple and high fault tolerance.However,the asymmetric structure generates an unbalanced magnetic force(UMF),which results in vibration and noise problems.In this study,the vibration and noise of the motor are analyzed and optimized.First,the radial pressure is analyzed,and an optimized structure is proposed.The electromagnetic performance of the motor before and after optimization is analyzed using the finite element method.Second,a three-dimensional model is established,and modal analysis is conducted considering the orthotropy of the stator and effective windings.Finally,the vibration and noise are simulated and analyzed,and the validity of the analysis results is verified experimentally.The analysis results indicate that the optimized motor realizes a reduction in the motor vibration and noise. | Guohai Liu Akang Gao Qian Chen Yanxin Mao Gaohong Xu | 2023 | Chinese Journal of Electrical Engineering2023，9，2： | 0 |
| 11 | Selective Insertion in Copolymerization of Ethylene and Styrene Catalyzed by Half-Titanocene System Bearing Ketimide Ligand: A Theoretical Study显示文摘 | Xiaowei Xu Gaohong He Ning-Ning Wei Ce Hao Yu Pan | 2017 | Chinese Journal of Chemistry2017，35，11： | 0 |
| 12 | Kinematic synthesis and simulation of a vegetable pot seedling transplanting mechanism with four exact task poses显示文摘To obtain a picking and planting integrated transplanting mechanism(PITM)with ideal trajectory shape,reasonable operating attitude,and compact structure for vegetable pot seedling transplanting,a symmetrical structural PITM composed of two planetary carriers and driven by a cam-noncircular gear combination mechanism was proposed in this paper.In accordance with the requirements of transplanting agronomy,the shape of the motion trajectory and the attitude of the end tip of the clamping claw at several specific positions(the starting and end points of picking seedling,the starting point of pushing seedling,and a special point on the return segment)were planned.To make the clamping claws of PITM pass through a set of prescribed positions,the mechanism was simplified to an open-chain 3R mechanism.An accurate four-position-based method for solving the open-chain mechanism model was adopted to obtain the curves of its fixed hinge point(central point)and dynamic hinge point(circle point).The ratio of adjacent bars’lengths was analyzed to determine the feasible interval of the central and circle point curves and the reasonable link length.A desired closed transplanting trajectory that goes through the given points and the corresponding transmission ratio model of the open-chain mechanism was established.After the transmission ratio of each stage of gear and cam pairs was calculated and distributed,the prototype of PITM was designed and manufactured.Lastly,the effectiveness and feasibility of the design were verified through a preliminary experiment of the prototype. | Liang Sun Haocong Xu Yuzhu Zhou Jiahao Shen Gaohong Yu Huafeng Hu Yuejun Miao | 2023 | International Journal of Agricultural and Biological Engineering2023，16，2： | 0 |
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