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Research on Iron Loss of Switched Reluctance Starter/Generator for Energy Storage

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Protection and Control of Modern Power Systems 2024年第4期9卷 147-159页

作者： Hao Chen Xing Wang yongqiang Liu Vuong dang Quoc Wenju {2. Muhammad Saqib Antonino Musolino Guanjun Wang yong Qi Ali Asghar Memon Alexandros G.Paspatis the Shenzhen Research Institute China University of Mining and TechnologyShenzhen 515100China the school of Electrical engineering China University of Mining and TechnologyXuzhou 221116China Xinjiang Institute of engineering Urumqi 830000China the International Joint Research Center of Central and Eastern European Countries on New Energy EV technology and Equipment Xuzhou 221008China the International Cooperation Joint Laboratory of New Energy Power Generation and EVs of Jiangsu Province Colleges and Universities Xuzhou 221008China the Xuzhou Key Laboratory of New Energy EV technology and Equipment Xuzhou 221008China the the school of Electrical engineering China University of Mining and Tech-nologyXuzhou 221116China the Laboratory of High Performance Electric Machines(HiPems) Hanoi VN 10000Viet Nam the university of engineering and {2. Lahore 54890Pakistan the Department of Energy Pisa Uni-versity of PisaPisa IT 56126Italy the Wuxi Inspection and Testing Certification Research Institute Wuxi 214000China the Nanjing university of science&Tech-nology Nanjing 210094China the Mehran university of Engi-neering&technology Jamshoro PK 76062Sindh the National Technical university of Athens Zografou GR 15780Attica

In order to better realize the energy recovery and storage of hybrid EVs(HEVs),a switched reluctance starter/generator(SRS/G)with both starting and power generation functions is investigated in this ***,the iron loss of SRS/G is mainly studied to reduce the motor loss and improve the power generation ***,the energy storage of hybrid EVs can be effectively ***,a magnetic flux density(MFD)waveforms solution method is proposed to solve the difficulty in calculating the iron loss of the SRS/*** with the commonly used finite element method,the proposed solution method has the advantages of simple,fast and small computational ***,considering the different operating conditions of SRS/G,the iron loss models for both the time-domain and frequency-domain are *** addition,the calculation formula of the variable coefficient Bertotti three-term loss separation is *** the hysteresis loss coefficient,the Steinmetz coefficient and the stray loss coefficient are respectively fitted by the Fourier fitting *** method is also applied to solve the iron loss of SRS/***,through an experimental verification,it is indicated that the development of proposed method has high accuracy.

关键词： Switched reluctance starter/generator energy storage iron loss finite element method magnetic flux density(MFD)

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氨氮胁迫对厌氧处理高浓度有机氮废水的影响

中国环境科学 2024年第10期44卷 5453-5460页

作者：党澎泽谈新伟李祥袁砚黄勇李鹏飞冯震苏州科技大学环境科学与工程学院江苏苏州215009 苏州科技大学江苏水处理技术与材料协同创新中心江苏苏州215009 苏州天竣环境科技有限公司江苏苏州215100 苏州科锐德节能环境科技有限公司江苏苏州215011

以实际制膜废水为例,探究了氨胁迫下高浓度有机氮废水甲烷化及微生物群落的动态响应,明确了氨抑制阈值,抑制形态,抑制机制和应对策略.结果表明,氨对AD处理高浓度有机氮废水的主要氨抑制形态为游离氨(FA),抑制阈值为(145±10)mg/L,半抑... 详细信息

以实际制膜废水为例,探究了氨胁迫下高浓度有机氮废水甲烷化及微生物群落的动态响应,明确了氨抑制阈值,抑制形态,抑制机制和应对策略.结果表明,氨对AD处理高浓度有机氮废水的主要氨抑制形态为游离氨(FA),抑制阈值为(145±10)mg/L,半抑制浓度为(2.4±10)mg/L.在AD处理高浓度有机氮废水时,乙酸营养型产甲烷菌Methanosaeta,甲基营养型产甲烷菌Methanomassiliicoccus和Methanomethylovorans是主要产甲烷微生物.Methanosaeta和Methanomethylovorans分别在氨氮高于300mg/L和900mg/L时活性下降,同时产氢产二氧化碳相关功能微生物在FA高于140mg/L时受到抑制,使含碳数大于1的小分子有机物在系统内累积,最终导致高FA条件下化学需氧量去除率降低和氨氮释放不完全.在受到高氨抑制后,可通过调控pH值的方式实现系统的恢复,但无法通过微生物驯化的方式缓解.

关键词： N,N-二甲基甲酰胺厌氧甲烷发酵半抑制浓度游离氨抑制阈值控制策略

Spin-down and emission variations for PSR J0742.2.2.

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Research in Astronomy and Astrophysics 2021年第2期21卷 142-148页

作者： Shi-jun dang Na Wang {2.i-{2.i Wang Jian-Ping Yuan Lun-{2.a Shang Rai Yuen Ming-Yu Ge Xia Zhou S{2.ang-Qiang Wang Fei-Fei Kou Wen-Ming yan Jing-Bo Wang Zhi-Gang Wen jun-Tao Bai Zhi-yong Liu Zu-Rong Zhou Xinjiang Astronomical Observatory Chinese Academy of SciencesUrumqi 830011China university of Chinese Academy of sciences 19A Yuquan RoadBeijing 100049China Key Laboratory of Radio Astronomy Chinese Academy of SciencesNanjing 210008China school of Physics Huazhong University of Science and TechnologyWuhan 430074China school of Electronic and Optical engineering Nanjing University of Science and TechnologyNanjing 210094China Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China CAS Key Laboratory of FAST National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China school of Physics and Electronic science Guizhou Normal UniversityGuiyang 550001China Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing Guizhou Normal UniversityGuiyang 550001China

PSR J0742.2.2. is known for its quasi-periodic changes in the observed pulse profile and spindown *** this paper,we analyzed 13 years of timing data obtained with the Nanshan 2.-m radio telescope and the Parkes 64-m radio *** found that the average values of the spin-down rate((v))of this pulsar changed in four different *** investigated the correlation between v and W50,and ascertained that the correlation changed in different ***,not all the changes in states and correlation can be associated with glitch *** examined the long term evolution ofγ-ray flux(0.1-300 GeV)and the pulse profiles corresponding to the four different states using Fermi-LAT Pass8(P8 R3)data from 2.08 August 5 to 2.19 October *** did not detect a significant change inγ-ray flux or the pulse *** results suggest that the connection between pulsar rotation and emission is more complex than previously reported for this pulsar.

关键词： pulsars general-stars pulsar-methods timing

Exercise promotes angiogenesis by enhancing endothelial cell fatty acid utilization via liver-derived extracellular vesicle miR-12.-5p

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Journal of Sport and Health science 2022年第4期11卷 495-508页

作者： Jing Lou Jie Wu Mengya Feng Xue dang Guiling Wu Hongyan yang yan Wang Jia Li yong Zhao Changhong Shi Jiankang Liu Lin Zhao Xing Zhang Feng Gao Center for Mitochondrial Biology and Medicine The Key Laboratory of Biomedical Information Engineering of Ministry of EducationSchool of Life Science and TechnologyXi’an Jiaotong UniversityXi’an 710049China school of Aerospace Medicine Fourth Military Medical UniversityXi’an 710032China Medical school of Chinese PLA Beijing 100853China Laboratory Animal Center Fourth Military Medical UniversityXi’an 710032China

Background:Angiogenesis constitutes a major mechanism responsible for exercise-induced beneficial *** previous study identified a cluster of differentially expressed extracellular vesicle microRNAs(miRNAs)after exercise and found that some of them act as ***,whether these extracellular vesicle miRNAs mediate the exercise-induced angiogenesis remains ***:A 9-day treadmill training was used as an exercise model in C57BL/6 ***-specific adeno-associated virus 8 was used to knock down microRNA-12.-5p(miR-12.-5p).human umbilical vein endothelial cells were used in ***:Among these differentially expressed extracellular vesicle miRNAs,miR-12.-5p was identified as a potent pro-angiogenic factor that activated vascular endothelial growth factor signaling and promoted angiogenesis both in vivo and in *** increased circulating levels of miR-12.-5p,which was produced mainly by the liver and shuttled by extracellular vesicles in *** of circulating miR-12.-5p or liver-specific knockdown of miR-12.-5p significantly abolished the exercise-induced pro-angiogenic effect in skeletal muscles,and exerciseimproved muscle performance in ***,miR-12.-5p promoted angiogenesis through shifting substrate preference to fatty acids in endothelial cells,and miR-12.-5p upregulated endothelial cell fatty-acid utilization by targeting 1-acyl-sn-glycerol-3-phosphate acyltransferase(AGPAT1).In addition,miR-12.-5p increased capillary density in perilesional skin tissues and accelerated wound healing in ***:These findings demonstrated that exercise promotes angiogenesis through upregulation of liver-derived extracellular vesicle miR-12.-5p,which enhances fatty acid utilization by targeting AGPAT1 in endothelial cells,highlighting the therapeutic potential of miR-12.-5p in tissue repair.

关键词： Angiogenesis Endothelial cells Exerkine Extracellular vesicle Metabolic shift

碱性环境下硫脲协调铬黑T稳定的银纳米簇的制备

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应用化学 2021年第2期38卷 195-201页

作者：郭永艳田雁飞党铭铭杨萍龙云飞湖南有色金属职业技术学院公共课教学部株洲412006 湖南科技大学化学化工学院湘潭411201

银纳米簇因有特殊的物理和化学性质,具有广泛的应用前景和研究价值。由于其易发生团聚,探索制备具有强荧光特性、稳定存在、粒径小的银纳米簇的方法具有重要的意义。本文发展了以铬黑T为稳定剂、硫脲为协调稳定剂,在碱性环境中快速制备... 详细信息

银纳米簇因有特殊的物理和化学性质,具有广泛的应用前景和研究价值。由于其易发生团聚,探索制备具有强荧光特性、稳定存在、粒径小的银纳米簇的方法具有重要的意义。本文发展了以铬黑T为稳定剂、硫脲为协调稳定剂,在碱性环境中快速制备银纳米簇的方法。在最优条件下,制备的银纳米簇的平均粒径为1.67 nm,粒径主要分布在0.74~3.33 nm,晶格间距为0.2.57 nm,晶格类型为(102.型;具有蓝绿色荧光,其最大激发波长为380 nm,最大发射波长为463 nm,量子产率为1.64%。

关键词：银纳米簇碱性环境硫脲铬黑T

Ag^(+)存在下催化还原铬黑T及应用于Ag^(+)检测

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化学研究与应用 2021年第4期33卷 761-766页

作者：郭永艳党铭铭田雁飞杨萍龙云飞湖南有色金属职业技术学院资源环境系湖南株洲412006 湖南科技大学化学化工学院湖南湘潭411201

以铬黑T(EBT)为探针,在有Ag^(+)存在的最优条件下,EBT被NaBH 4催化还原,体系在445 nm发射波长处荧光强度明显增强,基于此构建一种光学测定溶液中微量Ag^(+)的方法。在最优条件下,Ag^(+)浓度在(7.5×10-9~1.0×10^(-6) mol·L^(-1))范围... 详细信息

以铬黑T(EBT)为探针,在有Ag^(+)存在的最优条件下,EBT被NaBH 4催化还原,体系在445 nm发射波长处荧光强度明显增强,基于此构建一种光学测定溶液中微量Ag^(+)的方法。在最优条件下,Ag^(+)浓度在(7.5×10-9~1.0×10^(-6) mol·L^(-1))范围内呈良好的线性关系,线性回归方程为ΔI F=5.59×10^(8) c-31(c,mol·L^(-1),r=0.9966),Ag^(+)的最低有效检测浓度为6.0×10^(-8) mol·L^(-1)。在最优条件下,运用该方法对样品中Ag^(+)浓度进行检测,样品中Ag^(+)浓度的检测回收率在98.8%~102.4%之间,RSD=2.1%。该检测方法能够对水溶液中微量的Ag^(+)进行有效定量检测,且操作简单、检测限低、灵敏度高。

关键词：铬黑T Ag^(+) 荧光分光光度法

Research and Exploration on Innovation and Entrepreneurship Practice Education System for Railway Transportation Specialists

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国际计算机前沿大会会议论文集 2023年第2期 447-455页

作者： Jiu yong Jianwu dang {2.gping Wang Jianguo Wei {2. Lu The National Virtual Simulation Experiment Teaching Center of Railway Traffic Information and Control Lanzhou Jiaotong UniversityLanzhou 730070China College of Intelligence and Computing Tianjin UniversityTianjin 300350China The school of Electronic and Information engineering Lanzhou Jiaotong UniversityLanzhou 730070China Key Laboratory of Four Electric BIM engineering and Intelligent Application Railway Industry Lanzhou 730070China

With the background of concept of rail transit major engineering,guided by industry demand,and based on the cultivation of practical abilities for outstanding engineering and {2. talents in rail transit characteristic majors,we are committed to creating a national strategic innovation and entrepreneurship practical education system for rail transit characteristic professionals,continu-ously improving the practical teaching *** will carry out the construction of a“matrix style”practical teaching system that integrates the four modernizations,the construction of a virtual simulation practical teaching platform that integrates expertise and innovation,and open sharing,as well as the reform and explo-ration of the entire chain of integrated practical *** scheme focuses on improving students’ability to solve complex engineering problems and their abil-ity to apply composite knowledge and innovate and start businesses,cultivating a large number of outstanding rail transit engineering talents with solid professional foundations,outstanding practical abilities,and innovative and entrepreneurial qualities.

关键词： Rail transportation Innovation and entrepreneurship Practical teaching Teaching platform Teaching team Integration of specialization and innovation

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ZnO纳米线阵列的制备及其光电性能研究

山东农业大学学报（自然科学版） 2017年第2期48卷 268-272页

作者：党威武张永军徐秀娟李燕陕西国防工业职业技术学院机械工程学院陕西西安710300 西安交通大学材料科学与工程学院陕西西安710049

本文采用较低温度、无催化剂条件下的化学气相沉积法(Chemical vapor deposition,CVD)在透明导电玻璃上制备ZnO纳米线阵列,分析讨论反应温度、保温时间对产物形貌的影响,并将其分别制成染料敏化太阳电池(Dye-sensitized solar cell,DSC... 详细信息

本文采用较低温度、无催化剂条件下的化学气相沉积法(Chemical vapor deposition,CVD)在透明导电玻璃上制备ZnO纳米线阵列,分析讨论反应温度、保温时间对产物形貌的影响,并将其分别制成染料敏化太阳电池(Dye-sensitized solar cell,DSC)光阳极,探究DSC光电性能的变化情况。结果表明:沉积温度为500℃时,在透明导电玻璃上得到均匀、致密、长径比大的ZnO纳米线阵列。此外,大长径比的ZnO纳米线阵列作为光阳极组装的DSC具有较好的光电性能,主要原因是大长径比的ZnO纳米线有利于染料分子的负载,提高入射光的利用率,另外,ZnO纳米线作为一维纳米材料有利于电子空穴的分离、传输,综合表现出较高的光电转化效率。同时,进一步探讨敏化过程对DSC光电性能的影响。研究发现,随着敏化时间的延长,DSC光电转化效率反而降低,可见,合理的敏化时间对保证电极稳定性、获得较好电池光电性能至关重要。

关键词： ZnO 纳米线阵列化学气相沉积染料敏化太阳电池