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| 1 | Electromechanical Fields Near a Circular PN Junction Between Two Piezoelectric Semiconductors显示文摘We study electromechanical fields near the interface between a circular piezoelectric semiconductor cylinder and another piezoelectric semiconductor in which it is embedded.The cylinder is p-doped. The surrounding material is n-doped. The phenomenological theory of piezoelectric semiconductors consisting of the equations of piezoelectricity and the conservation of charge for holes and electrons is used. The theory is linearized for small carrier concentration perturbations. An analytical solution is obtained, showing the formation of a PN junction near the interface. Various electromechanical fields associated with the junction are calculated. The effects of a few physical parameters are examined. | Yixun Luo Ruoran Cheng Chunli Zhang Weiqiu Chen Jiashi Yang | 2018 | Acta Mechanica Solida Sinica2018，31，2： | 5 |
| 2 | Effect of cold deformation on corrosion fatigue behavior of nickel-free high nitrogen austenitic stainless steel for coronary stent application显示文摘Due to the excellent mechanical properties, good corrosion resistance, high biocompatibility and nickelfree character, the high nitrogen nickel-free austenitic stainless steel(HNASS) becomes an ideally alternative material for coronary stents. Stent implantation works in harsh blood environment after a balloon dilatation, i.e., the material is used in a corrosive environment with a permanent deformation. The present study attempts to investigate effects of pre-straining on high-cycle fatigue behavior and corrosion fatigue behavior of HNASS in Hank's solution and the relevant mechanism for coronary stents application. It is found that higher pre-straining on HNASS results in higher strength and maintains almost same corrosion resistance. Fatigue limit of 0% HNASS is 550 MPa, while corrosion fatigue limit is 475 MPa. And improvement in fatigue limit of 20% and 35% pre-strained HNASS is in comparison with the 0% HNASS, while corrosion would undermine the fatigue behavior of HNASS. In a suitable range, the prestraining had a beneficial effect on corrosion fatigue strength of HNASS, such as nearly 300 MPa improved with 20% cold deformation. This result provides a good reference for predicting the life of HNASS stent and as well its design. | Jun Li Yixun Yang Yibin Ren Jiahui Dong Ke Yang | 2018 | Journal of Materials Science & Technology2018，34，4： | 4 |
| 3 | Granulosa cell proliferation differentiation and its role in follicular development显示文摘Granulosa cells (GCs) are the most important cells in the ovary that undergo serious changes morphologi- cally and physiologically during the processes of follicular proliferation, differentiation, ovulation, lutenization and atresia. Oocyte (OC) directs GC proliferation and differen- tiation, while GCs influence OC maturation. Many ovarian factors are involved in the regulation of these processes via different molecular mechanisms and signal pathways. P38 MAPK can selectively regulate steroidogenesis in GCs con- trolled by FSH; Transcript factors LRH-1 and DAX-1 play an important role in this process; FSH induces GC prolifera- tion and differentiation by stimulating PCNA and StAR ex- pression and steroidogenesis. Activated ERK1/2 signal pathway may be involved in the FSH-regulated GC prolif- eration and differentiation. Therefore,GC is an ideal model for studying cell proliferation, differentiation and interaction as well as signal transduction. This review briefly summa- rizes the latest data in the literature, including the results achieved in our laboratory. | LU Cuiling YANG Wei HU Zhaoyuan LIU Yixun | 2005 | Chinese Science Bulletin2005，50，23： | 3 |
| 4 | PhGRL2 Protein, Interacting with PhACO1, Is Involved in Flower Senescence in the Petunia显示文摘 | Yinyan Tan Juanxu Liu Fang Huang, Jiefu Guan, Shan Zhong, Na Tang, Ji Zhao, Weiyuan Yang Yixun Yu | 2014 | Molecular Plant2014，7，8： | 3 |
| 5 | A DEGREE SEQUENCE METHOD FOR THE CUTWIDTH PROBLEM OF GRAPHS显示文摘The cutwidth problem fora graph G is to embed G into a path such thatthe maximum number of overlap edges is minimized.This paperpresents an approach based on the degree se- quence of G for determining the exact value of cutwidth of typical graphs (e.g.,n- cube,cater- pillars) .Relations between the cutwidth and other graph- theoretic parameters are studied as | Lin Yixun Li Xianglu Yang Aifeng | 2002 | Applied Mathematics(A Journal of Chinese Universities)2002，17，2： | 2 |
| 6 | A class of bottleneck expansion problems显示文摘 | Jianzhong Zhang Chao Yang Yixun Lin | 2000 | Computers and Operations Research2000，，6： | 1 |
| 7 | A class of bottleneck expansion problems显示文摘 | Jianzhong Zang Chao Yang Yixun Lin | 2001 | Computers & Operations Reseach2001，28，： | 1 |
| 8 | A class of bottleneck expansion problems 显示文摘 | Zhang Jiangzhong Yang Chao Lin Yixun | 2001 | Computers & Operations Reseach2001，28，： | 1 |
| 9 | A class of bottleneck expansion problems 显示文摘 | Zhang Jianzhong Yang Chao Lin Yixun | 2001 | Computer & Opera- tions Research2001，28，6： | 1 |
| 10 | A class of bottleneck expansion problems显示文摘 | Jianzhong Zhang Chao Yang Yixun Lin | 2001 | Computer and Operations Research2001，28，： | 1 |
| 11 | Surface modification of Li_(3)InCl_(6)provides superior electrochemical performance for LiMn_(2)O_(4)cathode materials显示文摘Li Mn_(2)O_(4)(LMO)is the substance of choice for small and medium-sized energy storage materials in daily life.In this work,Li3InCl6(LIC)is prepared on the surface of LiMn_(2)O_(4)by hydrothermal method using InCl_(3)and LiCl as raw materials.This method stabilizes the LMO crystal structure by uniformly coating the LIC on the LMO surface and effectively maintains the morphology of LMO crystals during the cycling process.SEM and EDS analysis confirm the morphology and homogeneity of the synthesized material LIC on the LMO surface.The prepared material is put into a battery,and the charge-discharge test is carried out at 0.5 C and 1 C.The results show that the LIC surface-modified samples exhibit more than 6%higher cycling performance than the unmodified samples after long cycling. | Yixun Gu Kuan Yang Hongbin Yao Weijian Li Haiqing Zhan Xianquan Ming Guanhan Huang Guiliang Li Feng Zhan | 2023 | Chinese Chemical Letters2023，34，5： | 0 |
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