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| 1 | ANALYTICAL VARIATIONAL METHOD OF SOLUTION FOR STRESS CONCENTRATION FACTORS OF FINITE PLATES WITH A PIN HOLE显示文摘ANALYTICALVARIATIONALMETHODOFSOLUTIONFORSTRESSCONCENTRATIONFACTORSOFFINITEPLATESWITHAPINHOLEXiYuanshan;ZhangXing(Departmentof... | Xi Yuanshan Zhang Xing(Department of Flight Vehicle Design and Applied Mechanics, Beijing University of Aeronautics and Astronautics, Beijing, Cina, 100083)Ren Bingyi Luo Anmin(Chendu Aircraft Industrial Corporation, Chendu, China, 610041) | 1996 | Chinese Journal of Aeronautics1996，9，1： | 2 |
| 2 | TLR7/8 signalling affects X-sperm motility via the GSK3α/β-hexokinase pathway for the efficient production of sexed dairy goat embryos显示文摘Background:Goat milk is very similar to human milk in terms of its abundant nutrients and ease of digestion.To derive greater economic benefit,farmers require more female offspring(does);however,the buck-to-doe offspring sex ratio is approximately 50%.At present,artificial insemination after the separation of X/Y sperm using flow cytometry is the primary means of controlling the sex of livestock offspring.However,flow cytometry has not been successfully utilised for the separation of X/Y sperm aimed at sexing control in dairy goats.Results:In this study,a novel,simple goat sperm sexing technology that activates the toll-like receptor 7/8(TLR7/8),thereby inhibiting X-sperm motility,was investigated.Our results showed that the TLR7/8 coding goat Xchromosome was expressed in approximately 50%of round spermatids in the testis and sperm,as measured from cross-sections of the epididymis and ejaculate,respectively.Importantly,TLR7/8 was located at the tail of the Xsperm.Upon TLR7/8 activation,phosphorylated forms of glycogen synthase kinaseα/β(GSK3α/β)and nuclear factor kappa-B(NF-κB)were detected in the X-sperm,causing reduced mitochondrial activity,ATP levels,and sperm motility.High-motility Y-sperm segregated to the upper layer and the low-motility X-sperm,to the lower layer.Following in vitro fertilisation using the TLR7/8-activated sperm from the lower layer,80.52±6.75%of the embryos were XX females.The TLR7/8-activated sperm were subsequently used for in vivo embryo production via the superovulatory response;nine embryos were collected from the uterus of two does that conceived.Eight of these were XX embryos,and one was an XY embryo.Conclusions:Our study reveals a novel TLR7/8 signalling mechanism that affects X-sperm motility via the GSK3α/β-hexokinase pathway;this technique could be used to facilitate the efficient production of sexed dairy goat embryos. | Fa Ren Huaming Xi Yijie Ren Yu Li Fei Wen Ming Xian Mengjie Zhao Dawei Zhu Liqiang Wang Anmin Lei Jianhong Hu | 2022 | Journal of Animal Science and Biotechnology2022，13，2： | 2 |
| 3 | The simulation of snowmelt runoff in the ungauged Kaidu River Basin of TianShan Mountains, China 显示文摘 | Dou Yan CHEN Xi BAO Anmin | 2011 | Environmental Earth Science2011，62，5： | 1 |
| 4 | Study on the properties of Sn - 9Zn - xCr lead - free solder 显示文摘 | Xi Chert Anmin Hu Ming Li | 2007 | Journal of alloys and Compounds2007，7，： | 1 |
| 5 | Continuous on-line adaptation of the rotor time constant in FOC induction machine system显示文摘Rotor time constant is an important parameter for the indirect field orientated control of induction motor.Incorrect rotor time constant value will cause the flux observer generating a wrong angular orientation of the rotor field.A new approach serves for rotor time constant on-line adaptation by setting the stator current to be zero for a short period.A smooth corrector is designed to prevent abnormal detection result from making adaptation.Impact of zero current duration on detection error and rotor speed is analyzed by experiments. | 齐昕 Ma Xianghua Wang Changsong Xi Anmin | 2013 | High Technology Letters2013，19，3： | 0 |
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