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| 1 | CT血管成像虚拟门静脉压力梯度(CHESS 1601):门静脉高压无创诊断的前瞻性多中心研究显示文摘目的建立并验证一种基于CT血管成像的预估门静脉压力梯度的计算机模型,命名为虚拟门静脉压力梯度(HVPG),使肝硬化病人门静脉高压的无创诊断成为可能。材料与方法在这项前瞻性多中心诊断试验(Clinical Trials.gov标志符:NCT02842697)中,2016年8月—2017年4月从3个大型肝病中心连续招募了102例符合条件的参与者(年龄21~75岁,平均47岁;包括男性68例,年龄21~73岁,平均44岁,女性34例,年龄24~75岁,平均52岁)。 | X.L.Qi W.M.An F.Q.Liu R.Z.Qi L.Wang Y.N.Liu. 胡芳(译) 杜明珊(校) | 2019 | 国际医学放射学杂志2019,0,2: | 31 |
| 2 | Effect of Mo Addition on Microstructural Characteristics in a Re-containing Single Crystal Superalloy显示文摘The effect of Mo addition on microstructural characteristics of a nickel-base single crystal superalloy containing 4 wt% Re was investigated. The γ/γ' partitioning ratios determined by energy dispersive spectrometer attached to a transmission electron microscope showed that the addition of Mo enhanced the partitioning of Re,W and Cr in the g matrix while decreased the concentration of Ta in the matrix. Synchrotron radiation diffraction was adopted to measure the γ/γ' lattice misfit at room temperature. The results indicated that Mo addition changed the γ/γ' lattice misfit towards larger negative as well as increased the tetragonal distortion of the γ lattice. Additionally,Mo addition led to microstructural instability and altered the precipitation behavior of topologically close-packed phases during 1100 C exposure. Instead of precipitating directly from the matrix,the μ phase was observed to be converted from the α phase which precipitated preferentially as a metastable intermediate in the alloy with high Mo content. | X.G.Liu L.Wang L.H.Lou J.Zhang | 2015 | Journal of Materials Science & Technology2015,31,2: | 12 |
| 3 | REMAINING LIFE ASSESSMENT OF A 1Cr5Mo STEEL BY USING Z-PARAMETER METHOD显示文摘Z-parameter method based on the Larson-Miller relationship is proposed to assess remaining life of a 1Cr5Mo steel. The non-linear master curve of stress σ vs. LarsonMiller parameter P of the steel can be expressed as: P=29.608-5.0851ogσ. A family of curves parallel to the master curve can be expressed as: P=29.608-Z-5.0851ogσ,where the value of Z represents the magnitude deviated from the master curve. A relationship between the value of Z-parameter and the level of spheroidization E (microstructural degradation) can be expressed as: Z=0.203(E-1). | J.Zhao S.Q.Han S.M.Xie H.B.Gao L.Wang | 2004 | Acta Metallurgica Sinica(English Letters)2004,17,4: | 9 |
| 4 | Effect of Long-term Thermal Exposure on Microstructure and Stress Rupture Properties of GH3535 Superalloy显示文摘The evolution of microstructure and the stress rupture properties of long term thermally exposed GH3535 alloy have been investigated. It was found that M6 C carbides presented in the solid solution heat treated samples. During long term thermal exposure at 700 C, fine M12 C carbides precipitated preferentially at grain boundaries. These carbides coexisted with the pre-exiting M6 C. The stress rupture life of700 C/1000 h exposed sample under creep testing at 650 C/324 MPa is 93 h. It is much longer than that of the solid solution samples. No noticeable changes could be detected in both the microstructure and stress rupture lives when the samples were exposed for time longer than 1000 h M12 C carbides were found to be beneficial to the creep properties. The cracks initiated at the interface of M6 C carbides and matrix, which led to a lower creep rupture life. | T.Liu J.S.Dong L.Wang Z.J.Li X.T.Zhou L.H.Lou J.Zhang | 2015 | Journal of Materials Science & Technology2015,31,3: | 9 |
| 5 | Effect of temperature on the mechanical abnormity of the quasicrystal reinforced Mg-4%Li-6%Zn-1.2%Y alloy显示文摘The serrated phenomena of the quasicrystalline phase reinforced Mg-4%Li-6%Zn-1.2%Y alloy after the extrusion,solid solution treatment and aged treatment have been investigated at different temperatures.The result shows that when the temperature is above 100℃,the serrated phenomenon becomes weak and all the serrated amplitudes are lower than 1 MPa.Among them,the serrated amplitude of samples in aged condition is the lowest and the value is only 0.1-0.2 MPa.The underneath mechanism for the lower plastic instability at higher temperature(≥100℃)can be ascribed to the weak pining effect of solute atoms on the movement of dislocation and release of the pile-up dislocations. | C.Q.Li D.K.Xu T.T.Zu E.H.Han L.Wang | 2015 | Journal of Magnesium and Alloys2015,3,2: | 8 |
| 6 | Three-dimensional dynamics of supported pipes conveying fluid显示文摘This paper deals with the three-dimensional dynamics and postbuckling behavior of flexible supported pipes conveying fluid, considering flow velocities lower and higher than the critical value at which the buckling instability occurs. In the case of low flow velocity, the pipe is stable with a straight equilibrium position and the dynamics of the system can be examined using linear theory. When the flow velocity is beyond the critical value, any motions of the pipe could be around the postbuckling configuration(non-zero equilibrium position) rather than the straight equilibrium position, so nonlinear theory is required. The nonlinear equations of perturbed motions around the postbuckling configuration are derived and solved with the aid of Galerkin discretization. It is found, for a given flow velocity,that the first-mode frequency for in-plane motions is quite different from that for out-of-plane motions. However, the second-or third-mode frequencies for in-plane motions are approximately equal to their counterparts for out-of-plane motions, keeping almost constant values with increasing flow velocity. Moreover, the orientation angle of the postbuckling configuration plane for a buckled pipe can be significantly affected by initial conditions, displaying new features which have not been observed in the same pipe system factitiously supposed to deform in a single plane. | L.Wang T.L.Jiang H.L.Dai | 2017 | Acta Mechanica Sinica2017,33,6: | 7 |
| 7 | 中国825个基准、基本站地面气压系统误差的检验与订正显示文摘使用RHtest均一化方法结合元数据信息对中国825个基准、基本站的地面气压月值数据进行均一性检验与订正,结果发现有400个站的气压数据均一,425个站存在系统误差。对于后者,使用静力模式订正可消除255个站的系统误差,另外170个站采用均值订正,均值订正的断点共245个。对气候趋势和个例的分析表明,上述方法对气压数据均一化订正效果明显。均一化之后站点气压长期趋势的空间一致性更好,中国东南沿海和西北部的新疆地区气压表现出下降趋势,中部地区主要表现出上升趋势。 | 远芳 曹丽娟 唐国利 Xiaolan L.Wang | 2015 | 气候变化研究进展2015,11,5: | 6 |
| 8 | Effect of Temperature on Material Transfer Behavior at Different Stages of Friction Stir Welded 7075-T6 Aluminum Alloy显示文摘In this work,the morphologies of weld of 7075-T6 aluminum alloy via friction stir welding(FSW) were analyzed by optical microscopy,the temperature field was attained by numerical simulation,and the effect of temperature on material transfer behavior in the thermal-mechanical affected zone(TMAZ) at different stages was mainly investigated.The FSW process consists of three stages.It is very interesting to find that the maximum transfer displacement of material appears at the final stage of welding process,then at the stable stage and at the initial stage,which results from the difference of peak temperatures at different stages.At any stage,the material in TMAZ near the surface of weld transfers downwards,the material in the middle of weld moves upwards and the material near the bottom of weld hardly moves.In any cross section of weld,the largest transfer displacement of material appears in the middle of weld.The increase of rotational velocity and the decrease of welding speed are both beneficial to the transfer displacement of material in the middle of weld. | S.D.Ji Y.Y.Jin Y.M.Yue S.S.Gao Y.X.Huang L.Wang | 2013 | Journal of Materials Science & Technology2013,29,10: | 6 |
| 9 | Nonplanar flow-induced vibrations of a cantilevered PIP structure system concurrently subjected to internal and cross flows显示文摘Pipe-in-pipe(PIP)structures are widely used in offshore oil and gas pipelines to settle thermal insulation issues.A PIP structure system usually consists of two concentric pipes and one softer layer for thermal insulation consideration.The total response of the system is related to the dynamics of both pipes and the interactions between these two concentric pipes.In the current work,a theoretical model for flow-induced vibrations of a PIP structure system is proposed and analyzed in the presence of an internal axial flow and an external cross flow.The interactions between the two pipes are modeled by a linear distributed damper,a linear distributed spring and a nonlinear distributed spring along the pipe length.The unsteady hydrodynamic forces due to cross flow are modeled by two distributed van der Pol wake oscillators.The nonlinear partial differential equations for the two pipes and the wake are further discretized by the aid of Galerkin’s technique,resulting in a set of ordinary differential equations.These ordinary differential equations are further numeri cally solved by using a fourth-order Runge-Kutta integration algorithm.Phase portraits,bifurcation diagrams,an Argand diagram and oscillation shape diagrams are plotted,showing the existence of a lock-in phenomenon and figure-of-eight trajectory.The PIP system subjected to cross flow displays some interesting dynamical behaviors different from that of a single-pipe structure. | Z.Y.Liu T.L.Jiang L.Wang H.L.Dai | 2019 | Acta Mechanica Sinica2019,35,6: | 5 |
| 10 | Semiconducting single-walled carbon nanotubes synthesized by S-doping显示文摘An approach was presented for synthesis of semiconducting single-walled carbon nanotubes(SWNTs) by sulfur(S) doping with the method of graphite arc discharge. Raman spectroscopy, UV-vis-NIR absorption spectroscopy and electronic properties measurements indicated the semconducting properties of the SWNTs samples. Simulant calculation indicated that S doping could induce convertion of metallic SWNTs into semiconducting ones. This strategy may pave a way for the direct synthesis of pure semiconducting SWNTs. | Z.J.Li L.Wang Y.J.Su P.Liu Y.F.Zhang | 2009 | Nano-Micro Letters2009,1,1: | 5 |
| 11 | 湛江海湾大桥分布式健康监测系统开发研究显示文摘提出了分布式桥梁健康监测系统的原理,介绍了湛江海湾大桥分布式健康监测系统的开发情况、系统设计、硬件布置和软件功能,重点突出了数据预处理、分级传输、用户定制监测内容和分析报告,以及围绕工程养护决策需要来尽量少地布置最必要的监测内容等的研究策略。 | 曹映泓 Ming L.Wang 朱利明 | 2007 | 公路2007,52,1: | 4 |
| 12 | Effect of Solidification Condition and Carbon Content on the Morphology of MC Carbide in Directionally Solidified Nickel-base Superalloys显示文摘Evolution of the morphology of MC carbides with the change of cooling rate and carbon content in two kinds of nickel-base superalloys, K417 G and DD33, has been investigated. The morphology of MC carbides evolves from faceted to script-like with increasing cooling rate. Varying the carbon content from 40X10-6 to 320X10-6, the morphology of carbides changes from blocky, rod-like into script-like. Scanning electron microscopy observation of deep-etched samples indicates that these carbides evolve from octahedral to dendritic and then into welldeveloped dendrites accordingly in a three-dimensional manner. The morphology evolution is discussed from the viewpoint of the preferential growth orientation of fcc crystals and the carbide growth rate during directional solidification. | X.W.Li L.Wang J.S.Dong L.H.Lou | 2014 | Journal of Materials Science & Technology2014,30,12: | 4 |
| 13 | EFFECT OF RESIDUAL STRESS ON THE MARTENSITIC TRANSFORMATION OF SPUTTER-DEPOSITED SMA THIN FILMS显示文摘TiNi thin films were sputter-deposited on circular single-crystal silicon substrates un-der various sputtering parameters. The crystal structure and residual stress of the as-deposited films were determined by X-ray diffraction and substrate-curvature method.The phenomenon of stress-suppressed martensitic transformation was observed. It isconsidered that the residual stresses in SMA thin films based on circular substratesact as balanced biaxial tensile stresses. The status of equilibrant delays the align-ment of self-accommodated variants and the volume shrinkage during the martensitictransformation. | L.Wang,D.Xu and B.C.CaiInformation Storage Research Center, Shanghai Jiao Tong University, Shanghai 200030, China Manuscript received 14 September 2001 in revised form 27 November 2001 | 2002 | Acta Metallurgica Sinica(English Letters)2002,15,4: | 3 |
| 14 | STUDY OF TCP PHASE PRECIPITATING IN GH4199 SUPERALLOY显示文摘The precipitating regulation and mechanism of TCP phase (μ phase and σ phase) are studied, using electron hole number (EHN) theory, phase analysis technology and TEM observation. The results indicate that the EHN in studied alloy is 2.311-2.348 which is higher than that of critical EHN of μ phase precipitate (2.30), so μ phase could precipitate if there is enough thermo-exposition. In contrast, the calculated EHN is less than that of critical EHN of σ phase precipitate (2.52). However the σ phase is also observed by TEM. Enrich of Cr and Mo around γ phase after γ′phase precipitated leads to σ phase precipitated. | T.Cui Y.S.Zhang S.W.Guo L.Wang H.C.Yang | 2004 | Acta Metallurgica Sinica(English Letters)2004,17,5: | 3 |
| 15 | Stringent cessation criterion results in better durability of lamivudine treatment: a prospective clinical study in hepatitis B e antigen‐positive chronic hepatitis B patients显示文摘 | L.Wang F.Liu Y.‐D.Liu X.‐Y.Li J.‐B.Wang Z.‐H.Zhang Y.‐Z.Wang | 2010 | Journal of Viral Hepatitis2010,,4: | 2 |
| 16 | 断奶仔猪日粮中添加酵母培养物对生长性能、肠道健康和免疫的影响显示文摘选择216头断奶仔猪来研究口粮中添加不同水平的酵母培养物(YC)对生长性能、养分消化率、小肠形态、肠道微生物区系和免疫的影响并探讨酵母培养物是否可以替代抗生素生长促进剂(AGP)。共设2个试验:试验1,192头28d断奶仔猪(7.5±0.2kg)随机分为6个处理组:①对照组;②AGP(金霉素,80mg/kg);③2.5g/kg酵母培养物;④5g/kg酵母培养物;⑤10g/kg酵母培养物;⑥20g/kg酵母培养物。每个处理8个重复,每个重复4头猪。试验期21d。饲喂5g/kg酵母培养物组仔猪平均日增重显著高于(P〈0.05)对照组和其他酵母培养物组。 | 刘冰 Y.B.Shen X.S.Piao S.W.Kim L.Wang P.Liu I.Yoon Y.G.Zhen | 2009 | 饲料与畜牧(新饲料)2009,,8: | 2 |
| 17 | A quantitative analysis of body mass index and colorectal cancer: findings from 56 observational studies显示文摘 | Y.Ning L.Wang E. L.Giovannucci | 2009 | Obesity Reviews2009,,1: | 2 |
| 18 | Expression of epidermal growth factor receptor in esophageal and esophagogastric junction adenocarcinomas显示文摘 | Kim L.Wang Tsung‐TehWu In SeonChoi HuaminWang ErikaResetkova Arlene M.Correa Wayne L.Hofstetter Stephen G.Swisher Jaffer A.Ajani AsifRashid Constance T.Albarracin | 2007 | Cancer2007,,4: | 2 |
| 19 | The Lobster Eye Imager for Astronomy Onboard the SATech-01 Satellite显示文摘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 27.In this paper,we introduce the design and on-ground test results of the LEIA instrument.Using 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 realized.An 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 detectors.The 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 view.The 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 observation.The total weight of LEIA is 56 kg and the power is 85 W.The satellite,with a design lifetime of 2 yr,operates in a Sun-synchronous orbit of 500 km with an orbital period of 95 minutes.LEIA 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 parameters.In 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. | 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 | 2023 | Research in Astronomy and Astrophysics2023,23,9: | 2 |
| 20 | The Treg/Th17 Imbalance in Patients with Idiopathic Dilated Cardiomyopathy显示文摘 | J.Li L.Wang S.Wang H.Zhu P.Ye A.Xie B.Shen C.Liu C.Guo Q.Fu K.Zhang J.Xia | 2010 | Scandinavian Journal of Immunology2010,,4: | 2 |