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Two-stage double peaks ageing and its effect on stress corrosion cracking susceptibility of Al-Zn-Mg alloy

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Journal of Materials Science & Technology 2018年第7期34卷 1250-1257页

作者： y.l.wang H.C.Jiang Z.M.li D.S.yan D.Zhang l.J.Rong CAS Key laboratory of Nuclear Materials and Safety Assessment Institute of Metal Research Chinese Academy of Sciences School of Materials Science and Engineering University of Science and Technology of China

Different artificial two-stage ageing behaviors and their effect on stress corrosion cracking （SCC） susceptibility of AI-Zn-Mg alloy have been investigated. The experimental results show that two hardness peaks present on the second-stage ageing-hardening curve when the first-stage ageing is dealt with comparatively lower temperature than the conventional one. The first peak is caused by dispersive and evenly distributed G.P. zones, while η ′phases and coarsened G.P. zones contribute to the second peak. Tensile strength of experimental alloy raises 9.6% （33.2 MPa） and SCC susceptibility decreases 38.9% by applying the second peak ageing regime instead of conventional T73. AI-Zn-Mg alloy obtains high strength and SCC resistance due to its finely dispersive matrix precipitates （MPts）, coarsened and discontinuous grain boundary precipitates （GBPs）, as well as the narrow precipitate free zone （PFZ） in the second peak ageing condition. 2017 Published by Elsevier ltd on behalf of The editorial office of Journal of Materials Science ＆ Technology.

关键词： Al-Zn-Mg alloy Two-stage ageing Double peaks ageing Stress corrosion cracking (SCC) susceptibility Grain boundary precipitates (GBPs)

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Construction and expression of a heterologous protein in lactococcus lactis by using the Nisin-controlled gene expression system:The case of the PRRSV ORF6 gene

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Construction and expression of a heterologous protein in Lac...

中国畜牧兽医学会动物微生态学分会第十一次全国学术研讨会暨第五届会员代表大会

作者： y.l.wang Z.H.wang X.y.Zeng Isotope Research laboratory College of Life and Basic SciencesSichuan Agricultural University Department of Animal and Veterinary Science Chengdu Vocational College of Agricultural Science and Technology

The porcine reproductive and respiratory syndrome virus(PRRSV) continues to be a threat,exerting significant economic effects on the swine industry ***,none of the current commercially available vaccines can completely prevent respiratory infection,trans-placental transmission,pig-to-pig transmission of the virus,or maintain immune protection in *** study provides information on PRRSV and a review of available options for PRRS control strategies based on its pathogenic characteristics,immune properties,and biological *** this study,the nisin-controlled expression(NICE) system of lactococcus lactis was selected as a vector to express the ORF6 gene of ***-grade recombinant,*** PNZ8149/NZ3900-M/PRRS,which contained the lactose operon,was successfully *** molecular weight of the expressed recombinant protein was approximately 19 ***,the recombinant protein was located on the surface of *** and showed reactogenicity with the antibody against *** of this study are expected to lay a theoretical foundation for development of genetically engineered *** mucosal vaccines and to provide information related to its immune activity and adjuvant effects.

关键词： lactococcus lactis Nisin controlled expression system Porcine reproductive and respiratory syndrome virus(PRRSV) ORF6

Study of Effective Composition between the Taproot and Fiber of Ethnic yi Herb Shuang Shen by FTIR Spectrum

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Study of Effective Composition between the Taproot and Fiber...

第三十五届国际光谱会议

作者： y.l.wang~* Q.yang Department of Physics and Electronic Science Chuxiong Normal University Chuxiong 675000 China

＜正＞Shuang shen is a herb that has characteristic Ethnic yi *** FTIR spectra have been obtained from the taproot and fiber of shuang *** spectrums are very different, this show that main composition of two different parts of shuang shen are distinctions, There are more starch in the taproot,and more fibers in the fiber root. This paper analysis relations between effective compositions and *** results demonstrate that the curative effect of taproot and fiber aren’t complete *** have

关键词：

THEORy AND EXPERIMENTAl STUDy ON STABIlITy OF ROTOR-BEARING SySTEM

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THEORY AND EXPERIMENTAL STUDY ON STABILITY OF ROTOR-BEARING ...

The Third International Conference on Dynamics, Vibration and Control

作者： y.l.wang Z.S.liu School of Energy Science and Engineering Harbin Institute of Technology Harbin 150001 China

＜正＞With the rotating machinery development trend of high-parameters and large capacity,nonlinear dynamic instability of large rotor-bearing system as its core part becomes a much more important ***’s necessary to investigate nonlinear dynamic behaviors,instability and the influences of operating parameters on dynamic stability of rotor-bearing system.

关键词： Nonlinear system dynamic stability response oil whirl oil whip

高频功率扩散加权成像对神经上皮肿瘤分级预测的诊断价值

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国际医学放射学杂志 2018年第1期 119-120页

作者： Z.y.Chen P.Zho B.lv M.Q.liu y.wang y.l.wang 冀晓东 Department of Radiology Chinese PLA General Hospital

摘要目的回顾性分析高频功率(HFP)与最小表观扩散系数(Min ADC)对神经上皮肿瘤分级预测的诊断价值。方法采用3.0 T MRI系统对115例病人进行扩散加权成像

关键词：加权成像诊断价值神经上皮肿瘤高频功率

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带端墙平车的结构优化

国外铁道车辆 1988年第6期 20-26页

作者： y.l.wang 李冠辉刘迺湘

本研究的目的是开发在各种应力、工况和几何制约的条件下,使用声学工程判断和应用现代的优化技术,对66ft(20.1m)长的平车进行最小重量的设计。根据美国铁路协会(AAR)的设计规范,研究了五种载荷情况。为了将中梁的重量减到最小,对于序贯... 详细信息

本研究的目的是开发在各种应力、工况和几何制约的条件下,使用声学工程判断和应用现代的优化技术,对66ft(20.1m)长的平车进行最小重量的设计。根据美国铁路协会(AAR)的设计规范,研究了五种载荷情况。为了将中梁的重量减到最小,对于序贯无约束极小化方法,采用弗莱彻·鲍威尔(Fletsh-Powell)算法。对结构构件、变截面元件和梁板相交之间的中立轴线的偏移,均包含在平车模型的有限单元分析之中。考虑了附加载荷情况对一些断面和材料作了更换,因而进一步降低了重量。

关键词：端墙枕梁声学工程载荷情况单元分析结构构件美国铁路附加载荷板梁弗莱彻

Modeling and Suppression of Clutter for Airborne Fire Control Radar with Conformal Antennas Array

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Modeling and Suppression of Clutter for Airborne Fire Contro...

2011 CIE International Conference on Radar(RADAR 2011)

作者： K.Q.Duan W.C.Xie y.l.wang Key Research lab. Wuhan Radar Academy Wuhan 430019 China

Conformal antennas array （CAA） offer many advantages over conventional planar antennas array （PAA） such as less payload weight, larger effective aperture and increased field of view without mechanically canting or rotating the array. In this paper, airborne fire control radar （AFCR） with CAA is analyzed in terms of antennas modeling, working mechanism, subarray synthesis, clutter characteristics and clutter suppression method, etc. Firstly, the mathematics model and geometry configuration of AFCR with CAA are given, and the manners of subarray division and working are obtained based on the requirement for moved target detection of AFCR, and the pattern properties of CAA are analyzed. Secondly, the clutter spectrum distribution in space-time plane is analyzed. Finally, clutter suppression performance of existing space- time adaptive processing （STAP） techniques for practice is compared, and the minimum detectable velocity of AFCR with CAA is shown.

关键词： Airborne fire control radar Conformal antennas array Space-time adaptive processing Clutter suppression

扩散加权成像和动脉自旋标记影像组学特征可提高放射性脑损伤和脑胶质瘤复发的鉴别能力

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国际医学放射学杂志 2023年第4期 489-490页

作者： J.Zhang y.Wu y.l.wang X.y.Zhang y.F.lei G.M.Zhu 武文婧

摘要目的探讨扩散加权成像（DWI）和动脉自旋标记（ASl）的影像组学特征能否提高脑胶质瘤病人放射性脑损伤（RIBI）和肿瘤复发（TR）的鉴别诊断水平。方法从常规MRI、

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The lobster Eye Imager for Astronomy Onboard the SATech-01 Satellite

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Research in Astronomy and Astrophysics 2023年第9期23卷 66-78页

作者： Z.X.ling X.J.Sun C.Zhang S.l.Sun G.Jin S.N.Zhang X.F.Zhang J.B.Chang F.S.Chen y.F.Chen Z.W.Cheng W.Fu y.X.Han H.li J.F.li y.li Z.D.li P.R.liu y.H.lv X.H.Ma y.J.Tang C.B.wang R.J.Xie y.l.Xue A.l.yan Q.Zhang C.y.Bao H.B.Cai H.Q.Cheng C.Z.Cui y.F.Dai D.W.Fan H.B.Hu J.W.Hu M.H.Huang Z.Q.Jia C.C.Jin D.y.li J.Q.li H.y.liu M.J.liu y.liu H.W.Pan y.l.Qiu M.Sugizaki H.Sun W.X.wang y.l.wang Q.y.Wu X.P.Xu y.F.Xu H.N.yang X.yang B.Zhang M.Zhang W.D.Zhang Z.Zhang D.H.Zhao X.Q.Cong B.W.Jiang l.H.li X.B.Qiu J.N.Sun D.T.Su J.wang C.Wu Z.Xu X.M.yang S.K.Zhang Z.Zhang N.Zhang y.F.Zhu H.y.Ban X.Z.Bi Z.M.Cai W.Chen X.Chen y.H.Chen y.Cui X.l.Duan Z.G Feng y.Gao J.W.He T.He J.J.Huang F.li J.S.li T.J.li T.T.li H.Q.liu l.liu R.liu S.liu N.Meng Q.Shi A.T.Sun y.M.wang y.B.wang H.C.Wu D.X Xu y.Q yang y.yang X.S.yu K.X.Zhang y.l.Zhang y.H.Zhang y.T.Zhang H.Zhou X.C.Zhu J.S.Cheng l.Qin l.wang Q.l.wang M.Bai R.l.Gao Z.Ji y.R.liu F.l.Ma y.J.Shi J.Su y.y.Tan J.Z.Tong H.T.Xu C.B.Xue G.F.Xue W.yuan National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 100049China Shanghai Institute of Technical Physics Chinese Academy of SciencesShanghai 200083China North Night Vision Technology Co. LTDNanjing 211106China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Science and Technology on low-light-level Night Vision laboratory Xi'an 710065China Innovation Academy for Microsatellites Chinese Academy of SciencesShanghai 201204China Institute of Electrical Engineering Chinese Academy of ScienceBeijing 100190China National Space Science Center Chinese Academy of ScienceBeijing 100190China

The lobster Eye Imager for Astronomy(lEIA),a pathfinder of the Wide-field X-ray Telescope of the Einstein Probe mission,was successfully launched onboard the SATech-01 satellite of the Chinese Academy of Sciences on2022 July *** this paper,we introduce the design and on-ground test results of the lEIA *** stateof-the-art Micro-Pore Optics(MPO),a wide field of view of 346 square degrees(18.6°×18.6°)of the X-ray imager is *** optical assembly composed of 36 MPO chips is used to focus incident X-ray photons,and four large-format complementary metal-oxide semiconductor(CMOS)sensors,each of size 6 cm×6 cm,are used as the focal plane *** instrument has an angular resolution of 4’-8’(in terms of FWHM)for the central focal spot of the point-spread function,and an effective area of 2-3 cm^(2) at 1 keV in essentially all the directions within the field of *** detection passband is 0.5-4 keV in soft X-rays and the sensitivity is2-3×10^(-11) erg s^(-1) cm^(-2)(about 1 milliCrab)with a 1000 s *** total weight of lEIA is 56 kg and the power is 85 *** satellite,with a design lifetime of 2 yr,operates in a Sun-synchronous orbit of 500 km with an orbital period of 95 *** is paving the way for future missions by verifying in flight the technologies of both novel focusing imaging optics and CMOS sensors for X-ray observation,and by optimizing the working setups of the instrumental *** addition,lEIA is able to carry out scientific observations to find new transients and to monitor known sources in the soft X-ray band,albeit with limited useful observing time available.

关键词： instrumentation detectors-space vehicles instruments-telescopes-X-rays genera

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