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| 1 | Influence of rare earth Ce on hot deformation behavior of as-cast Mn18Cr18N high nitrogen austenitic stainless steel显示文摘The hot deformation behavior of Mn18Cr18N and Mn18Cr18N+Ce high nitrogen austenitic stainless steels at 1173-1473 K and 0.01-1 s^(-1) were investigated by thermal compression tests.The influence mechanism of Ce on the hot deformation behavior was analyzed by Ce-containing inclusions and segregation of Ce.The results show that after the addition of Ce,large,angular,hard,and brittle inclusions(TiN-Al_(2)O_(3),TiN,and Al_(2)O_(3)) can be modified to fine and dispersed Ce-containing inclusions(Ce-Al-O-S and TiN-Ce-Al-O-S).During the solidification,Ce-containing inclusions can be used as heterogeneous nucleation particles to refine as-cast grains.During the hot deformation,Ce-containing inclusions can pin dislocation movement and grain boundary migration,induce dynamic recrystallization(DRX)nucleation,and avoid the formation and propagation of micro cracks and gaps.In addition,during the solidification,Ce atoms enrich at the front of solid-li-quid interface,resulting in composition supercooling and refining the secondary dendrites.Similarly,during the hot deformation,Ce atoms tend to segregate at the boundaries of DRX grains,inhibiting the growth of grains.Under the synergistic effect of Ce-containing inclusions and Ce segregation,although the hot deformation resistance and hot deformation activation energy are improved,DRX is more likely to occur and the size of DRX grains is significantly refined,and the problem of hot deformation cracking can be alleviated.Finally,the microhardness of the samples was measured.The results show that compared with as-cast samples,the microhardness of hot-deformed samples increases signific-antly,and with the increase of DRX degree,the microhardness decreases continuously.In addition,Ce can affect the microhardness of Mn18Cr18N steel by affecting as-cast and hot deformation microstructures. | Yushuo Li Yanwu Dong Zhouhua Jiang Qingfei Tang Shuyang Du Zhiwen Hou | 2023 | International Journal of Minerals,Metallurgy and Materials2023，30，2： | 4 |
| 2 | Pulse source-system model and its amplitude versus frequency characteristics显示文摘The pulse contains most of information on the body health. In recent years, scholars,both at home and abroad, have been greatly interested in studying human pulse information using the modern scientific technology and methods. In this paper, we study the features and the physical process of pulse signal gcncration and initially establish a pulse source-system model on the basis of the information theory, the system theory and the acoustical theory. The model is proved to be rational by experimental testing and the new signal analysis techniques-the Cepstrum and Liftering Techniques. In this paper, the structures and features of the pulse acoustical-spectral diagrams are analysed for the first time and several conclusions on the physiological features of the pulse transmission system are drawn. | WANG Binghe DONG Yanwu TU Haiying WU Shengju SHANG Zhiyuan TONG Jie JIN Xiuchan WANG Ruie(Applied Acoustics Institute Shaanxi Normal University, Xi’ an 710062)ZHANG Xiaomin WANG Haiyan XIANG Jinglin(Northwestern Polylechnical Uaiversity. Xi’ an 71 | 1995 | Chinese Journal of Acoustics1995，14，3： | 3 |
| 3 | Follicular helper T cells in systemic lupus erythematosus: A potential therapeutic target显示文摘 | Weijia Dong Ping Zhu Yanwu Wang Zhenguo Wang | 2010 | Autoimmunity Reviews2010，，6： | 1 |
| 4 | Computation of the acoustic nonlinearity parameter in organic liquid binary mixtures显示文摘Based on Jacobson’s molecular free length theory in liquids and the relationship between the ultrasonic velocity and the molecular free length in organic liquids, the equation of the acoustic nonlinearity parameter in organic liquid binary mixtures is derived. The calculated values from the equation are in good agreement both with those from Apfel’s and from Sehgal’s mixture laws. | LU Yigang FENG Jinyuan DONG Yanwu TONG Jie | 2000 | Chinese Science Bulletin2000，45，5： | 1 |
| 5 | Hydro- gen Permeability of Slags Containing Calcium Fluoride显示文摘 | Dong Yanwu Jiang Zhouhua Liang Lianke | 2011 | J Cent South Univ Technol2011，18，4： | 1 |
| 6 | Hydro gen Pick-Up During Electroslag Remelting Process显示文摘 | Zhouhua Jiang Yanwu Dong Lianke Liang | 2011 | Jour hal of Iron and Steel Research International2011，18，4： | 1 |
| 7 | Quadratically hy- ponormal recursively generated weighted shifts 显示文摘 | Dong Yanwu Exner G Jung I B | 2008 | Oper Theo Adv Appl2008，187，1： | 1 |
| 8 | Simulation of multi - electrode EStk process for manufacturing large ingot 显示文摘 | Dong Yanwu Jiang Zhouhua Liu Hui | 2012 | ISIJ International2012，52，12： | 1 |
| 9 | Mathematical modelling of producing hollow ingot by electroslag casting with liquid metal 显示文摘 | Dong Yanwu Zheng Lichun Jiang Zhouhua | 2013 | Ironmaking and Steelmaking2013，40，2： | 1 |
| 10 | Nonlinearity acoustic parameter B/A in organic liquids显示文摘Based on Jacobson’s free length theory and the dependence of ultrasonic velocity on the free length in organic liquids, the equation of nonlinearity acoustic parameter B/A was given, and the calculated nonlinearity acoustic parameter B/A in some organic liquids are in good agreement with the measured results. | LU Yigang FENG Jinyuan (Department of Applied Physics, South China University of Technology Guangzhou 510641) TONG Jie DONG Yanwu (Applied Acoustics Institute, Shaanxi Normal University Xi’an 710062) | 2000 | Chinese Journal of Acoustics2000，19，3： | 1 |
| 11 | Improved computation of pressure coefficient and temperature coefficient of ultrasonic velocity in organic liquids显示文摘Based on Jacobson’s molecular free length theory in liquids and the relationship between the ultrasonic velocity and the molecular free length in organic liquids, the equations of pressure coefficient and temperature coefficient of ultrasonic velocity in organic liquids are derived . The calculated pressure coefficient and temperature coefficient of ultrasonic velocity are in good agreement with the measured results. | Yigang Lu Jianxin Peng Jie Tong Yanwu Dong | 1999 | Chinese Science Bulletin1999，44，19： | 0 |
| 12 | Effect of an external magnetic field on improved electroslag remelting cladding process显示文摘Obtaining a uniform interface temperature field plays a crucial role in the interface bonding quality of bimetal compound rolls.Therefore,this study proposes an improved electroslag remelting cladding(ESRC)process using an external magnetic field to improve the uniformity of the interface temperature of compound rolls.The improved ESRC comprises a conventional ESRC circuit and an external coil circuit.A comprehensive 3D model,including multi-physics fields,is proposed to study the effect of external magnetic fields on the multi-phys-ics fields and interface temperature uniformity.The simulated results demonstrate that the nonuniform Joule heat and flow fields cause a non-uniform interface temperature in the conventional ESRC.As for the improved ESRC,the magnetic flux density(B_(coil))along the z-axis is pro-duced by an anticlockwise current of the external coil.The rotating Lorentz force is generated from the interaction between the radial current and axial B_(coil).Therefore,the slag pool flows clockwise,which enhances circumferential effective thermal conductivity.As a result,the uniformity of the temperature field and interface temperature improve.In addition,the magnetic flux density and rotational speed of the simulated results are in good agreement with those of the experimental results,which verifies the accuracy of the improved ESRC model.Therefore,an improved ESRC is efficient for industrial production of the compound roll with a uniform interface bonding quality. | Zhiwen Hou Yanwu Dong Zhouhua Jiang Zhihao Hu Limeng Liu Kunjie Tian | 2022 | International Journal of Minerals,Metallurgy and Materials2022，29，8： | 0 |
| 13 | Dependence of the coefficient of ultrasonic velocity on the coefficient of free length in organic liquids显示文摘On the basis of Jacobson’s free length theory and the theory of pressure coefficient and temperature coefficient of free length in liquids, the relationship between the pressure coefficient of ultrasonic velocity and the pressure coefficient of free length, and the relationship between the temperature coefficient of ultrasonic velocity and the temperature coefficient of free length were studied. Relevant equations were given, and the pressure coefficient and temperature coefficient of ultrasonic velocity were calculated, which are in agreement with the measured values. | LU Yigang PENG Jianxin (Department of Applied Physics, South China University of Technology Guangzhou 510641) TONG Jie DONG Yanwu (Applied Acoustics institute, Shaanxi Normal University Xi’an 710062) | 2000 | Chinese Journal of Acoustics2000，19，1： | 0 |
| 14 | PHB介导的HIRA复合物调控人胚胎干细胞的表观--代谢环路显示文摘文章简介染色质地貌和细胞代谢对细胞命运决定有着重要的作用,但人们对它们之间的相互作用却了解甚少。课题组运用基因组范围的si RNA筛选,发现PHB对于维持人胚胎干细胞的自我更新具有重要的作用。 | Huanhuan Li Ping Lai Jinping Jia Yawei Song Qing Xia Kaimeng Huang Na He Wangfang Ping Jiayu Chen Zhongzhou Yang Jiao Li Mingze Yao Xiaotao Dong Jicheng Zhao Chunhui Hou Miguel A.Esteban Shaorong Gao Duanqing Pei Andrew P.Hutchins 姚红杰 Zhexin Zhu Chunliang Li Yanwu Zeng Jianyi Ding Zepeng Qu Junjie Gu Laixiang Ge Fan Tang Xin Huang Chenlin Zhou Ping Wang Deyou Zheng 金颖 | 2018 | 科学新闻2018，0，4： | 0 |
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