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13篇 您的检索式:作者名="K.Yang"
    题名 作者 年代 出处 被引量
1High-power passively Q-switched 2 μm all-solid-state laser based on a Bi_2Te_3 saturable absorber显示文摘By using the ultrasound-assisted liquid phase exfoliation method, Bi_2Te_3 nanosheets are synthesized and deposited onto a quartz plate to form a kind of saturable absorber(SA), in which nonlinear absorption properties around 2 μm are analyzed with a home-made mode-locked laser. With the as-prepared Bi_2Te_3 SA employed,a stable passively Q-switched all-solid-state 2 μm laser is successfully realized. Q-switched pulses with a maximum average output power of 2.03 W are generated under an output coupling of 5%, corresponding to the maximum single-pulse energy of 18.4 μJ and peak power of 23 W. The delivered shortest pulse duration and maximum repetition rate are 620 ns and 118 k Hz under an output coupling of 2%, respectively. It is the first presentation of such Bi_2Te_3 SA employed in a solid-state Q-switched crystalline laser at 2 μm, to the best of our knowledge. In comparison with other 2 D materials suitable for pulsed 2 μm lasers, the saturable absorption performance of Bi_2Te_3 SA is proved to be promising in generating high power and high-repetition-rate 2 μm laser pulses.X.LIU K.YANG S.ZHAO T.LI W.QIAO H.ZHANG B.ZHANG J.HE J.BIAN L.ZHENG L.SU J.XU 2017Photonics Research2017,5,5:6
2Effect of Preparation Technique on Microstructure and Hydrogen Storage Properties of LaNi(3.8)Al(1.0)Mn(0.2) Alloys显示文摘La Ni3.8Al1.0Mn0.2 alloy was prepared by vacuum induction melting and melt-spinning.The effects of different preparation techniques of the as-cast,cast then annealed,as-spun and spun then annealed alloys on the microstructure and hydrogen storage properties were investigated.The results indicated that the non-Ca Cu5 phases in the alloy became tinier and more dispersive after annealing or melt-spinning compared to those of the as-cast one.But in the spun then annealed alloy,the non-Ca Cu5 phases disappeared and only a single-phase with Ca Cu5 type structure was found.For all the alloys,the cell volume was increased in an order of as-cast < spun then annealed < cast then annealed < as-spun,and the change of plateau pressure showed the opposite trend with that of the cell volume.The plateau could be flattened after melt-spinning or annealing,and the spun then annealed alloy showed the minimum plateau slope.The absorption kinetics of the alloy was promoted after melt-spinning or annealing.It is suggested that the change in cell volume and compositional homogeneity resulting from different preparation techniques contribute to the difference of the hydrogen storage properties of the investigated alloys.X.B.Han Y.Qian W.Liu D.M.Chen K.Yang 2016Journal of Materials Science & Technology2016,32,12:2
3Cu-assisted austenite reversion and enhanced TRIP effect in maraging stainless steels显示文摘Control of the formation and stability of reverted austenite is critical in achieving a favorable combination of strength,ductility,and toughness in high-strength steels.In this work,the effects of Cu precipitation on the austenite reversion and mechanical properties of maraging stainless steels were investigated by atom probe tomography,transmission electron microscopy,and mechanical tests.Our results indicate that Cu accelerates the austenite reversion kinetics in two manners:first,Cu,as an austenite stabilizer,increases the equilibrium austenite fraction and hence enhances the chemical driving force for the austenite formation,and second,Cu-rich nanoprecipitates promote the austenite reversion by serving as heterogeneous nucleation sites and providing Ni-enriched chemical conditions through interfacial segregation.In addition,the Cu precipitation hardening compensates the strength drop induced by the formation of soft reverted austenite.During tensile deformation,the metastable reverted austenite transforms to martensite,which substantially improves the ductility and toughness through a transformation-induced plasticity(TRIP)effect.The Cu-added maraging stainless steel exhibits a superior combination of a yield strength of~1.3 GPa,an elongation of~15%,and an impact toughness of~58 J.M.C.Niu K.Yang J.H.Luan W.Wang Z.B.Jiao 2022Journal of Materials Science & Technology2022,,9:2
4Changes in clinicopathological features and survival after gastrectomy for gastric cancer over a 20‐year period显示文摘H. S.Ahn H.‐J.Lee M.‐W.Yoo S.‐H.Jeong D.‐J.Park H.‐H.Kim W. H.Kim K. U.Lee H.‐K.Yang 2010Br J Surg2010,,2:2
5Abundance of six tetracycline resistance genes in wastewater lagoons at cattle feedlots with different antibiotic use strategies显示文摘NicholasPeak Charles W.Knapp Richard K.Yang Margery M.Hanfelt Marilyn S.Smith Diana S.Aga David W.Graham 2006Environmental Microbiology2006,,1:1
6查看详情显示文摘M.C.Zhao Y.Y.Shan J.B.Qu K.Yang 0,,2:1
7Validation of limited lymphadenectomy for lower‐third gastric cancer based on depth of tumour invasion显示文摘S.‐H.Kong M.‐W.Yoo J.‐W.Kim H.‐J.Lee W. H.Kim K. U.Lee H.‐K.Yang 2010Br J Surg2010,,:1
8Validation of limited lymphadenectomy for lower‐third gastric cancer based on depth of tumour invasion显示文摘S.‐H.Kong M.‐W.Yoo J.‐W.Kim H.‐J.Lee W. H.Kim K. U.Lee H.‐K.Yang 2010Br J Surg2010,,1:1
9查看详情显示文摘Li G Shrotriya V Huang J. S Yao Y.Moriarty T.Emery K.Yang Y 0,,:1
10Genomic,transcriptomic,and metabolomic analysis of Oldenlandia corymbosa reveals the biosynthesis and mode of action of anti-cancer metabolites显示文摘Plants accumulate a vast array of secondary metabolites,which constitute a natural resource for pharmaceuticals.Oldenlandia corymbosa belongs to the Rubiaceae family,and has been used in traditional medicine to treat different diseases,including cancer.However,the active metabolites of the plant,their biosynthetic pathway and mode of action in cancer are unknown.To fill these gaps,we exposed this plant to eight different stress conditions and combined different omics data capturing gene expression,metabolic profiles,and anti-cancer activity.Our results show that O.corymbosa extracts are active against breast cancer cell lines and that ursolic acid is responsible for this activity.Moreover,we assembled a high-quality genome and uncovered two genes involved in the biosynthesis of ursolic acid.Finally,we also revealed that ursolic acid causes mitotic catastrophe in cancer cells and identified three high-confidence protein binding targets by Cellular Thermal Shift Assay(CETSA)and reverse docking.Altogether,these results constitute a valuable resource to further characterize the biosynthesis of active metabolites in the Oldenlandia group,while the mode of action of ursolic acid will allow us to further develop this valuable compound.Irene Julca Daniela Mutwil-Anderwald Vaishnervi Manoj Zahra Khan Soak Kuan Lai Lay K.Yang Ing T.Beh Jerzy Dziekan Yoon P.Lim Shen K.Lim Yee W.Low Yuen I.Lam Seth Tjia Yuguang Mu Qiao W.Tan Przemyslaw Nuc Le M.Choo Gillian Khew Loo Shining Antony Kam James P.Tam Zbynek Bozdech Maximilian Schmidt Bjoern Usadel Yoganathan Kanagasundaram Saleh Alseekh Alisdair Fernie Hoi Y.Li Marek Mutwil 2023Journal of Integrative Plant Biology2023,65,6:0
11IMPROVED PROCESSING FOR MICROSTRUCTURES AND MECHANICAL PROPERTIES OF A COMMERCIAL PIPELINE STEEL显示文摘The transformation productions of hot-deformation simulation experiments were investigated using a Gleeble-1500 hot simulator for a commercial pipeline steel. Based on the investigation results, the improved thermo-mechanical control processing (TMCP) schedules containing a two stage multi-pass controlled rolling coupled with moderate cooling rates were applied to hot rolling experiments and acicular ferrite dominated microstructure was obtained. Microstructures and mechanical properties of hot rolled plates were related to TMCP processing, and regression equations describing the relation between processing parameters and mechanical properties in the current TMCP were developed, which could be used to predict mechanical properties of the experimental steel during commercially processing. It was found that with an increase in cooling rate after hot rolling, grain size in the microstructure became smaller, the amount of polygonal ferrite decreased and acicular ferrite increased, and accordingly mechanical properties increased.Y.C.Wang Y.S.Li M.C.Zhao K.Yang 2005Acta Metallurgica Sinica(English Letters)2005,18,2:0
12HYDROGEN EFFECT ON DEFORMATION BEHMIOR OF TITANIUM ALLOY AT HIGH TEMPERATURE显示文摘The effect of hydrogen on the deformation behavior of three typical kinds of titanium alloys, pure Ti, Ti-6Al-4V and Ti-15V-3Cr-3Al-3Sn (Ti-15-3), at high temperature has been investigated by short time creep test. XRD and TEM techniques are used to examine the changes in their microstructures. The results show that deformation rutes of pure Ti and Ti-6Al-4V alloy can be greatly increased by hydorgen charping due to an increase of β phase volume in their microstructures. β→α transformation is found to occur in unchanged Ti-15-3 alloy during creep process. The addition of 0. 73wt% hydrogen can completely inhibit the deformation-induced transformation and strengthen the metastable β phase in Ti-15-3 alloy, resulting in a dramatic decrease of deformation rate of this alloy at 700° C.C.H.Zhou K.Yang D.F.Li Y.X.Lu 1998Acta Metallurgica Sinica(English Letters)1998,11,3:0
13新一代2.0L4缸汽油机冷却系统的开发显示文摘为满足日益严格的全球燃油经济性要求,流量主动控制、缸间钻孔和快速加热等各种先进的发动机冷却技术得以应用。韩国现代汽车公司最近开发了新一代2.0L4缸汽油机,采用了几种新的冷却系统技术。从概念设计阶段到预生产阶段,总结了三维计算机辅助工程(CAE)分析在发动机冷却性能评价中的应用。对缸盖和缸体水套中的冷却液流动进行了研究,找出了最佳方案,并通过优化缸垫孔对其进行了进一步的改进。在制造首台试验发动机之前,进行了三维温度模拟,以满足工程样机阶段的开发标准。为降低发动机温度或提高生产率,在新开发的发动机上研究并实施了一些水套的设计,如快速加热的缸体水套隔板、集成EGR冷却器的缸体、集成排气歧管的缸盖等。这些设计在试验阶段呈现了良好的效果。采用了三维热流CAE分析,对各系统进行了详细的物理现象研究,并提出了解决方案。结果表明,新一代发动机的冷却系统具有足够的热稳定性。 武涛(译) 2020汽车与新动力2020,3,3:0
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