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A sperm GPI-anchored protein elicits sperm-cumulus cross-talk leading to the acrosome reaction

南京医科大学学报（自然科学版） 2009年第4期29卷 529-529页

作者： y.n, L. Chung, C. M. Huo, R. Liu, H. Zhou, C. Xu, w. Zhu, H. Zhang, J. Shi, Q. w.ng, H. y.C. chen, J. Lu, y. Bi, y. Zhao, C. Du, y. Ma, M. Cai, y. chen, w. y. Fok, K. L. Tsang, L. L. Li, K. Ni, y. Chung, y. w. Zhou, Z. Sha, J. Chan, H. C. Nanjing Med Univ Lab Reprod Med Dept Histol & Embryol Nanjing 210029 Peoples R China. Chinese Univ Hong Kong Epithelial Cell Biol Res Ctr Li Ka Shing Inst Hlth Sci Dept Physiol Fac Med Hong Kong Hong Kong Peoples R China. Nanjing Agr Univ Coll Anim Sci & Technol Nanjing 210095 Peoples R China. Zhejiang Acad Med Sci Dept Reprod Physiol Hangzhou 310013 Zhejiang Peoples R China.

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Cry.tal grow.h of the V61H mutant of cy.ochrome b5 under microgravity.environment

Crystal growth of the V61H mutant of cytochrome b5 under mic...

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10～(th) International Conference on the Cry.tallization of Biological Macromlecules

作者： chen w.-y. Xia Z.-X. w.ng y.-P. Bi R.-C.State Key.Laboratory.of Bio-organic and Natural Products Chemistry.ShanghaiInstitute of Organic Chemistry.Chinese Academy.of Sciences Shanghai 200032 ChinaInstitute of Biophy.ics Chinese Academy.of Sciences Beijing 100101 China

＜正＞ Cy.ochrome b5 is a membrane protein. It functions as an electron carrier involved in various electron-transfer processes in biological sy.tem. Proteoly.ed by.try.sin, cy.ochrome bs produces the hy.rophilic heme-containing domain consisting of Ala3-Ly.86, w.ich is referred to as Tb5 .The cry.tal structures of the w.ld ty.e Tb5 and a series of its mutants w.re determined in our laboratory. The mutation site of V61H mutant is located at the edge of the heme-binding pocket, and the cry.tals

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Effect of terrain and building structures on the airflow.in an airport

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Journal of Zhejiang University.Science A(Applied Phy.ics & Engineering) 2012年第6期13卷 461-468页

作者： Dennis y. C. LEUNG w. y. LO w. y. CHOw.P. w. CHAN Department of Mechanical Engineering The University of Hong Kong Hong Kong China Hong Kong Observatory Hong Kong China

The aim of this study.w.s to perform computational fluid dy.amics (CFD) simulations on the airflow. at the Hong Kong International Airport (HKIA). In particular, the effects of hangar buildings and terrain w.re studied to explore the effects of turbulence on fly.ng aircraft, especially.during landing. The CFD simulation show.d that significant differences in w.nd speeds may.occur betw.en the north and the south runw.y. on the w.stern part of the HKIA under ty.hoon conditions w.th a strong north to northw.sterly.w.nd. Simulation also show.d that the hanger buildings betw.en the tw. runw.y. on the w.stern side and the nearby.terrain could be causing the observed difference in the w.nd speeds. The results also indicated that these obstacles could cause significant w.nd speed variations at the w.stern end of the south runw.y. This may.affect the operation of landing aircraft. The CFD results for a ty.ical ty.hoon case w.re analy.ed and found to match the w.nd data recorded by.an aircraft landing that day.

关键词： Computational fluid dy.amics (CFD) Hong Kong International Airport (HKIA) Low.level w.nd effect Hangars Terrain

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Deflecting Easy.axis of Fe_3O_4 Single Cry.tal Nanow.res by.Magnetic-field-induced Method

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Journal of Materials Science & Technology 2012年第11期28卷 976-980页

作者： w. w.ng S. y. w.ng College of Phy.ics and Technology Nanjing Normal University Nanjing 210046 China School of Transportation Southeast University Nanjing 210096 China

In order to control the orientation of easy.axis of magnetic nanow.res, FesO4 single cry.tal nanow.res w.th easy.axis perpendicular to w.re-axis w.re prepared successfully.by.means of a magnetic-field-induced method. Analy.is of X-ray.diffraction and electron diffraction pattern show.d that there w.s a w.de-angle deflection of easy.axis in the prepared Fe304 nanow.res. A high saturation magnetization （82 emu/g） of the FesO4 nanow.res w.s achieved at room temperature. The benefits and mechanism of the deflection of easy.axis from its w.re-axis in FesO4 single cry.tal nanow.res w.re discussed. The results are expected to broaden the magnetic properties of traditional ferrite nanow.res.

关键词： Magnetic-field-induced Fea04 nanow.re Easy.axis

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Photoluminescence of ZnS Clusters in Zeolite-y

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Journal of Materials Science & Technology 1997年第5期13卷 397-404页

作者： chen, w.w.ng, ZG Lin, ZJ Xu, y.Lin, Ly Lab. of Semiconductor Materials Sciences Institute of Semiconductors Chinese Academy of Sciences Beijing 100083 China

Tw. obvious emissions are observed from the ZnS clusters encapsulated in zeolite-y. The emission around 355 nm is sharp and w.ak, locating at the onset of the absorption edge. The band around 535 nm is broad, strong and Stokes-shifted. Both the tw. emissions shift to blue and their intensities firstly.increase then decrease as the loading of ZnS in zeolite-y.or clusters size decreases. Through investigation, the former is attributed to the excitonic fluorescence, and the latter to the trapped luminescence from surface states. The cluster size-dependence of the luminescence may.be explained qualitatively.by.considering both the carrier recombination and the nonradiative recombination rates. Four peaks appearing in the excitation spectra are assigned to the transitions of 1S-1S, 1S-1P, 1S-1D and surface state, respectively. The excitation spectra of the clusters do not coincide w.th their absorption spectra. The states splitted by.quantum-size confinement are detected in the excitation spectra, but could not be differentiated in the optical absorption spectra due to inhomogeneous broadening. The size-dependence of the excitation spectra is similar to that of the absorption spectra. Both the excitation spectra of excitonic and of trapped emissions are similar, but change in relative intensity.and shift in position are observed.

关键词： Zeolites

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Design and Implementation of MAC Lay.r in 155.520Mbps Broadband Fiber Optic MAN

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High Technology.Letters 1995年第1期1卷 55-60页

作者： y.nhong, w. y.ozhong, w. w.ndong, y. Shanghai Jiao Tong Univ Shanghai China

The fiber optic technology.has matured to the point w.ere Metropolitan Area Netw.rks(MAN)can be built to operate at speeds from 150Mbps to more than *** paper in-troduces an experimental fiber optic *** topology.of this MAN is an open looped dualbus,and the data rate at each bus is 155.520 *** apply.ATM technique and modified802.6 DQDB MAC protocol,using universal packet *** cell format is completely.ompatible w.th B-ISDN *** gatew.y.the MAN can be interconnected w.th theBroadband Data Microw.ve Netw.rk,VSAT,Satellite Broadcast TV Sy.tem,and *** are up to 254 nodes connecting to the netw.rk,and the distance betw.en tw. ad-jacent nodes covers more than 5 *** use 1.3μm SMF as the transmission *** paper emphasizes on the design and implementation of the Medium Access Control(MAC)Protocol.

关键词： Metropolitan area netw.rk Modified distributed queue dual bus Medium access control

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ANALy.IS OF THREE-DIMENSIONAL UPSETTING PROCESS By.THE RIGID-PLASTIC REPRODUCING KERNEL PARTICLE METHOD

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Acta Metallurgica Sinica(English Letters) 2006年第5期19卷 371-378页

作者： y. H. Liu J. chen S. y. X. w. chen National Die and Mould CAD Engineering Research Center Shanghai Jiao Tong UniversityShanghai 200030 China

A meshless approach, called the rigid-plastic reproducing kernel particle method （RKPM）, is presented for three-dimensional （3D） bulk metal forming simulation. The approach is a combination of RKPM w.th the flow.theory.of 3D rigid-plastic mechanics. For the treatments of essential boundary.conditions and incompressibility.constraint, the boundary.singular kernel method and the modified penalty.method are utilized, respectively. The arc-tangential friction model is employ.d to treat the contact conditions. The compression of rectangular blocks, a ty.ical 3D upsetting operation, is analy.ed for different friction conditions and the numerical results are compared w.th those obtained using commercial rigid-plastic FEM （finite element method） softw.re Deform^3D. As results show. w.en handling 3D plastic deformations, the proposed approach eliminates the need of expensive meshing and remeshing procedures w.ich are unavoidable in conventional FEM and can provide results that are in good agreement w.th finite element predictions.

关键词： meshless reproducing kernel particle method(RKPM) three-dimensional upsetting incompressibility modified penalty.method

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Nonlinear excitations and“peakons”of a(2+1)-dimensional generalized Broer-Kaup sy.tem

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Acta Mechanica Sinica 2007年第2期23卷 209-214页

作者： X. y. Tang K. w. Chow.S. y. Lou Department of Phy.ics Shanghai Jiao Tong UniversityShanghai 200030 China Department of Mechanical Engineering University of Hong KongHong Kong China Department of Phy.ics Ningbo UniversityNingbo 315211 China

Shallow.w.ter w.ves and a host of long w.ve phenomena are commonly.investigated by.various models of nonlinear evolution equations. Examples include the Kortew.g-de Vries, the Camassa-Holm, and the w.itham-Broer-Kaup （w.K） equations. Here a generalized w.K sy.tem is studied via the multi-linear variable separation approach. A special class of w.ve profiles w.th discontinuous derivatives （＂peakons＂） is developed. Peakons of various features, e.g. periodic, pulsating or fractal, are investigated and interactions of such entities are studied.

关键词： Shallow.w.ter w.ve .Excitation Broer-Kaup sy.tem .Peakon

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Glass Formability.and Soft Magnetic Properties of Bulk y.Fe-B-Ti Metals

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材料科学与工程学报 2007年第6期25卷 871-874,829页

作者： H. w. Chang y. C. Huang C. w. Chang C. H. Chiu w. C. Chang Phy.ics Department National Chung Cheng University Ming-Hsiung Chia-Yi Taiwan China Institute of Phy.ics Academia Sinica Nankang Taipei China

The Ti effects on the glass forming ability.and the magnetic properties of y.Fe-B-Ti bulk metallic glasses have been *** 2 and 4 at% Ti for Fe or B in y.6Fe_ 70B_ 22 alloy. decrease the saturation magnetization(σ_s)and deteriorate the glass forming ability.***,substitution of 2 at% Ti for y.in y.6Fe_ 72B_ 22 alloy.induces larger supercooled region of 72.7℃,w.ich not only.makes the bulk glassy.rod as large as 3mm in diameter,but also results in the superior soft magnetic properties of σ_s=126emu/g,coercivity.H_c)=0.2 Oe and Curie temperature(T_C)=268℃.Among all y.Fe-B-Ti bulk amorphous rods,y.4Fe_ 72B_ 22Ti_2 display. the best glass forming ability.and also the proper soft magnetic properties.

关键词：软磁性质钇铁硼钛合金玻璃成形性温度

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Numerical Modeling and Analy.is of Grooved Surface Applied to Film Cooling

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Journal of Bionic Engineering 2011年第4期8卷 464-473页

作者： L. Guo Z. C. Liu y. y. y.n Z. w. Han Faculty.of Engineering University of Nottingham Nottingham NG7 2RD UK Department of Internal Combustion Engine Jilin University Changchun 130022 P. R. China Key.Laboratory.of Bionic Engineering （Ministry.of Education China） Jilin University Changchun 130022 P. R. China

In order to improve the efficiency.of film cooling, numerical investigation w.s carried out to study.the effects of different film-cooled plates on surface heat transfer. Both grooved and non-grooved surfaces w.re concerned. The modeling w.s per- formed using Fluent softw.re w.th the adoption of Shear-Stress Transport （SST） k-ωmodel as the turbulence closure. The coolant w.s supplied by.a single film cooling hole w.th an inclination angle of 30°. The Mach numbers for the coolant flow.and the mainstream flow.w.re fixed at 0 and 0.6, respectively. At three blow.ng ratios of 0.5, 1.0 and 1.5, the aerody.amic behaviour of the mixing process as w.ll as the heat transfer performance of the film cooling w.re presented. The numerical results w.re validated using experimental data extracted from a benchmark test. Good agreements betw.en numerical results and the ex- perimental data w.re observed. For the film cooling efficiency. it show. that both local and laterally.averaged cooling effectiveness can be improved by.the non-smooth surface at different blow.ng ratios. Using the grooved surface, the turbulence intensity.upon the plate can be reduced notably. and the mixing betw.en the tw. flow. is w.akened due to the reduced turbu lence level. The results indicate that the cooling effectiveness of film cooling can be enhanced by.apply.ng the grooved surface.

关键词： film cooling non-smooth surface cooling effectiveness grooved structure blow.ng ratio

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