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Equivalent circuit model for the insulated core transformer

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Nuclear Science and Techniques 2016年第3期27卷 132-137页

作者： Bo yang Lei Cao Jun yang sheng-Chi yan Yi-Bin tao China Electric Power Research Institute Nanjing 210003China State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and TechnologyWuhan 430074China

The design of the insulated core transformer(ICT)needs to consider the flux leakage *** equivalent linear circuit model is proposed based on the principle of *** is composed by two types of leakage inductances:conventional leakage between windings and special leakage introduced mainly by the insulation *** values of leakage inductances depend on the dimensions of the core,gaps,or windings and the property of magnetic *** circuit allows for quantitatively evaluating influences of ICT internal parameters on its output *** winding self- and mutual inductance matrix is mathematically converted to derive the inductance *** an example,the leakage parameters of a sixstage two-dimensional(2D) ICT are calculated and analyzed.

关键词：等效电路模型变压器绝缘性能影响电感计算对偶原理等效线性磁性材料

Concept Design and Coupled Dynamic Response Analysis on 6-MW Spar-Type Floating Offshore Wind Turbine

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China Ocean Engineering 2017年第5期31卷 567-577页

作者： MENG Long ZHOU tao HE yan-ping ZHAO Yong-sheng LIU Ya-dong State Key Laboratory of Ocean Engineering Shanghai Jiao Tong University Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration(CISSE) School of Naval Architecture Ocean & Civil EngineeringShanghai Jiao Tong University

Tower, Spar platform and mooring system are designed in the project based on a given 6-MW wind turbine. Under wind-induced only, wave-induced only and combined wind and wave induced loads, dynamic response is analyzed for a 6-MW Spar-type floating offshore wind turbine （FOWT） under operating conditions and parked conditions respectively. Comparison with a platform-fixed system （land-based system） ofa 6-MW wind turbine is carried out as well. Results demonstrate that the maximal out-of-plane deflection of the blade of a Spar-type system is 3.1% larger than that of a land-based system; the maximum response value of the nacelle acceleration is 215% larger for all the designed load cases being considered; the ultimate tower base fore-aft bending moment of the Spar-type system is 92% larger than that of the land-based system in all of the Design Load Cases （DLCs） being considered; the fluctuations of the mooring tension is mainly wave-induced, and the safety factor of the mooring tension is adequate for the 6-MW FOWT. The results can provide relevant modifications to the initial design for the Spar-type system, the detailed design and model basin test of the 6-MW Spar-type system.

关键词： Spar-type floating offshore wind turbine concept design combined wind and wave loads coupled dynamicresponse

Improved Corrosion Resistance in AZ61 Magnesium Alloys Induced by Impurity Reduction

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Acta Metallurgica Sinica(English Letters) 2020年第2期33卷 225-232页

作者： yan Dai Xian-Hua Chen tao yan Ai-tao Tang Di Zhao Zhu Luo Chun-Quan Liu Ren-Ju Cheng Fu-sheng Pan College of Materials Science and Engineering Chongqing UniversityChongqing 400045China Chongqing Academy of Science and Technology Chongqing 401123China

The effect of impurity element Fe on corrosion behavior of AZ61 magnesium alloys in various states has been investigated by immersion test and hydrogen evolution measurements in 3.5% sodium chloride *** corrosion rate is found to relay on the impurity Fe concentration in the alloys and decreases with decreasing Fe *** Fe content drops from 150 ppm to 10 ppm,the corresponding corrosion rates under as-cast and solution treatment conditions are reduced from 8.54 mm/a and 8.61 mm/a to 2.54 mm/a and 0.21 mm/a,*** corrosion pattern of the AZ61 alloys is the localized corrosion,and the galvanic couples are formed among the impurity particles,second-phase particles and the *** Fe impurity particles tend to act as main cathodic to form micro-galvanic cell with the α-Mg matrix,which is harmful for corrosion resistance of AZ61 alloy.

关键词： AZ61 magnesium alloy Impurity Fe Corrosion rate

Robust and Self-healable Antibiofilm Multilayer Coatings

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Chinese Journal of Polymer Science 2021年第4期39卷 425-440,I0005页

作者： Chao Zhou Jun-tao Zhou Cheng-Ju sheng Dicky Pranantyo yan Pan Xiao-Jia Huang Institute of Biomedical Engineering and Health Sciences Changzhou UniversityChangzhou 213164China Department of Chemical and Biomolecular Engineering National University of Singapore117585Singapore

The infection induced by implantation of biomedical materials may result from the biofilm formation after bacteria ***,the antibiofilm surface coating represents a novel technique to improve the antibacterial activity of biomedical *** traditional antibiofilm surface coatings exhibited some disadvantages and provided a limited service *** this work,we used polyethyleneimine grafted 3-maleimidopropionic acid(PEIM)and poly(acrylic acid)grafted 2-furfurylamine(PAAF)to achieve robust and self-healable crosslinked multilayer coatings,employing Layer-by-Layer(LbL)self-assembly technique and Diels-Alder ***,thiol-terminated poly((3-acrylamidopropyl)trimethylammonium chloride)(PAMPTMA-SH)was grafted onto the crosslinked multilayer coating by thiol-ene click reaction to form a novel multilayer coating(PEIM/PAAF)_(10)-*** found that this coating showed robust and self-healable activity,and significantly inhibited the bacterial growth and biofilm formation after infection with Escherichia coli(***)and Staphylococcus aureus(***)by in vitro and in vivo assays for 120 *** addition,the multilayer coating did not induce significant hemolysis or affect the cell viability of red blood *** vivo studies also showed that(PEIM/PAAF)_(10)-PAMPTMA coating efficiently blocked the infiltration of inflammatory cells and gene expression in the mouse skin challenged with E coli or *** together,these results showed that the prepared multilayer coating exhibited strong antibiofilm activity and provided a new strategy for the application of highly efficient antibiofilm surface coating of biomedical materials.

关键词： Layer-by-Layer assembly Diels-Alder reaction Self-healable Antibiofilm coating Thiol-ene click reaction

Limits of Riemann Solutions for Isentropic MHD in a Variable Cross-Section Duct as Magnetic Field Vanishes

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Chinese Annals of Mathematics,Series B 2024年第4期45卷 637-660页

作者： Wancheng sheng tao XIAO Department of Mathematics Shanghai UniversityShanghai 200444China Shanghai Aircraft Design and Research Institute Shanghai 201210China

The stability for magnetic field to the solution of the Riemann problem for the polytropic fluid in a variable cross-section duct is *** the vanishing magnetic field method,the stable solutions are determined by comparing the limit solutions with the solutions of the Riemann problem for the polytropic fluid in a duct obtained by the entropy rate admissibility criterion.

关键词： Variable duct Magnetogasdynamics Riemann problem Stability Vanishing magnetic field method

Vitreous amyloidosis caused by a Lys55Asn variant in transthyretin: A case report

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World Journal of Clinical Cases 2022年第32期10卷 12000-12006页

作者： Yue Tan Yuan tao yan-Juan sheng Chen-Ming Zhang Department of Ophthalmology The Jinan Second People’s HospitalJinan 250000Shandong ProvinceChina

BACKGROUND Amyloidosis is caused by misfolding of proteins and is characterized by formation of extracellular aggregates of insoluble *** primary effects in the eye include sharp deterioration of visual acuity as a result of vitreous *** to the local and systemic distribution characteristics of amyloid deposits and their fibrin components,amyloidosis can be classified as primary,secondary or ***,we report a typical case of vitreous amyloidosis in hereditary transthyretin amyloidosis(hATTR)to improve ophthalmologists’understanding of the disease and reduce misdiagnosis and *** SUMMARY The patient was a 49-year-old man who complained of progressive visual decline in both eyes over a 2-mo *** systemic diseases such as diabetes or hypertension were reported,and no obvious family history of disease was *** patient’s visual acuity was HM/10 cm in the right eye and 0.06 in the left *** had a transparent cornea in both eyes,with a normal anterior depth,clear aqueous humor,no obvious iris abnormalities,round pupils of approximately 3 mm in diameter,normal direct and indirect light reflexes,and normal intraocular *** various examinations,the patient was diagnosed with binocular vitreous amyloidosis secondary to hATTR associated with a Lys55Asn variant in *** binocular visual acuity recovered to 1.0 after binocular *** Vitreous amyloidosis is rare in the clinic and gene testing can assist the diagnosis accurately and effectively.

关键词： Vitreous amyloidosis Transthyretin Lys55Asn variant Vitrectomy Case report

Quantum-Behaved Particle Swarm Optimization Algorithm Based on the Two-Body Problem

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Chinese Journal of Electronics 2019年第3期28卷 569-576页

作者： yan tao LIU Fengxian Institute of Big Data Science and Industry Shanxi University School of Computer and Information Technology Shanxi University Key Laboratory of Computational Intelligence and Chinese Information Processing of Ministry of Education Guangzhou Institute of Electronic Technology Chinese Academy of Sciences University of Chinese Academy of Sciences

The present study proposes an improved Quantum-behaved particle swarm optimization algorithm based on the two-body problem model(QTPSO) for solving the problem that other quantum-behaved particle swarm optimization algorithms easily converge on local optimal solutions when solving complex nonlinear problems. In the proposed QTPSO algorithm, particles are categorised as core particles and edge particles. Once the position of the core particle is determined, the edge particle appears in the vicinity of the attractor exhibiting a high probability, and the attractor is obtained through the random weighted sum of the core particle and the optimal mean position. Through simulation of the motion of these two particles by applying the interaction of the particles in the two-body problem, this mechanism not only improves the diversity of the population, but also enhances the local search capacity. To validate the proposed algorithm, three groups of experimental results were obtained to compare the proposed algorithm with other swarm intelligence algorithms. The experimental results indicate the superiority of the QTPSO algorithm.

关键词： Quantum-behaved particle swarm optimization Two-body problem Quantum potential well Wave function Nonlinear optimization problems

Real-Time Control Strategy of Exoskeleton Locomotion Trajectory Based on Multi-modal Fusion

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Journal of Bionic Engineering 2023年第6期20卷 2670-2682页

作者： tao Zhen Lei yan College of Engineering Beijing Forestry UniversityNo.35East Qinghua RoadBeijing100083China

The exoskeleton robot is a typical man–machine integration system in the human *** ideal man–machine state is to achieve motion coordination,stable output,strong personalization,and reduce man–machine confrontation during *** order to achieve an ideal man–machine state,a Time-varying Adaptive Gait Trajectory Generator(TAGT)is designed to estimate the motion intention of the wearer and generate a personalized gait *** can enhance the hybrid intelligent decision-making ability under human–machine collaboration,promote good motion coordination between the exoskeleton and the wearer,and reduce metabolic *** important feature of this controller is that it utilizes a multi-layer control strategy to provide locomotion assistance to the wearer,while allowing the user to control the gait trajectory based on human–robot Interaction(HRI)force and locomotion *** this article,a Temporal Convolutional Gait Prediction(TCGP)model is designed to learn the personalized gait trajectory of the wearer,and the control performance of the model is further improved by fusing the predefined gait trajectory method with an adaptive interactive force control model.A human-in-the-loop control strategy is formed with the feedback information to stabilize the motion trajectory of the output joints and update the system state in real time based on the feedback from the inertial and interactive force *** experimental study employs able-bodied subjects wearing the exoskeleton for motion trajectory control to evaluate the performance of the proposed TAGT model in online *** from these evaluations demonstrate that the controller TAGT has good motor coordination and can satisfy the subject to control the motor within a certain range according to the walking habit,guaranteeing the stability of the closed-loop system.

关键词： Exoskeleton Multi-layer control strategy Human–machine collaboration Time-varying adaptive gait Hybrid intelligent

Molecular characterization of the ryanodine receptor from Adoxophyes orana and its response to lethal and sublethal doses of chlorantraniliprole

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Journal of Integrative Agriculture 2021年第6期20卷 1585-1595页

作者： SUN Li-na LIU yan-di ZHANG Huai-jiang yan Wen-tao YUE Qiang QIU Gui-sheng Research Institute of Pomology Chinese Academy of Agricultural SciencesXingcheng 125100P.R.China

The insect ryanodine receptor(RyR)is a novel target of the anthranilic and phthalic insecticides,which have high activity against lepidopteran *** diamide insecticides have been used to control pests in orchards in *** enhance our understanding of the effects of diamides on RyRs,full-length cDNAs were isolated and characterized from the summer fruit tortrix moth,Adoxophyes orana,which is the most severe pest of stone and pome trees *** addition,the modulation of AoRyRmRNA expression by diamide insecticides was *** AoRyRmRNA obtained had an open reading frame(ORF)of 15402 bp nucleotides encoding 5113 amino acids,and shared high and low identity with its orthologs in other insects and mammals of 77–92 and 45–47%identity,*** alternative splice site with two exclusive exons was revealed in AoRyR(a/b).The usage of exon was more frequent in eggs and larvae than in pupae and *** real-time reverse transcription PCR(qRT-PCR)showed that AoRyRmRNA was expressed at all developmental stages,especially in eggs,male pupae and male *** expression levels of AoRyRmRNA in the whole body were up-regulated markedly after 3 rd instar larvae were treated with chlorantraniliprole at LC_(10),LC_(20)and LC_(50)*** results could provide the basis for further functional studies of Ao Ry R and for the development of new chemicals with selective activity against insects.

关键词： ryanodine receptor Adoxophyes orana chlorantraniliprole mRNA expression