|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Molecular Cytogenetic Characterization and Stem Rust Resistance of Five Wheat-Thinopyrum ponticum Partial Amphiploids显示文摘Partial amphiploids created by crossing common wheat(Triticum aestivum L.) and Thinopyrum ponticum(Podp.) Barkworth & D.R.Dewey are important intermediates in wheat breeding because of their resistance to major wheat diseases.In this study,we examined the chromosome compositions of five Xiaoyan-series wheat-Th.ponticum partial amphiploids(Xiaoyan 68.Xiaoyan 693,Xiaoyan 784,Xiaoyan 7430,and Xiaoyan 7631) using GISH,multicolor-GISH.and multicolor-FISH.We found several chromosome changes in these lines.For example,wheat chromosomes 1B and 2B were added in Xiaoyan 68 and Xiaoyan 7430,respectively,while wheat chromosome6 B was eliminated from Xiaoyan 693 and Xiaoyan 7631.Chromosome rearrangements were also detected in these amphiploids.including an interspecific translocation involving chromosome 4D and some inlergenomic translocations,such as A-B and A-D translocations,among wheat genomes.Analysis of the Th.ponticum chromosomes in the amphiploids showed that some lines shared the same alien chromosomes.We also evaluated these partial amphiploids for resistance to nine races of stem rust,including TTKSK(commonly known as Ug99).Three lines,Xiaoyan 68,Xiaoyan 784,and Xiaoyan 7430,exhibited excellent resistance to ail nine races,and could therefore be valuable sources of stem rust resistance in wheat breeding. | Qi Zheng Zhenling Lv Zhixia Niu Bin Li Hongwei Li Steven S.Xu Fangpu Han Zhensheng Li | 2014 | Journal of Genetics and Genomics2014，41，11： | 9 |
| 2 | Dependence of flow strength and deformation mechanisms in common wrought and die cast magnesium alloys on orientation,strain rate and temperature显示文摘The controlling plastic deformation mechanisms(i.e.slip or twinning)and the structural crash performance of Mg alloys are strongly influenced by loading mode,texture and microstructure.This paper summarizes the main results from an experimental program to assess these effects for commercial Mg alloy extrusions(AM30 and AZ31),sheet(AZ31),and high pressure die castings(HPDC,AM50 and AM60).Uniaxial tensile and compressive tests were performed over a wide range of strain rate and temperature(i.e.0.00075–2800 s^(−1) and 100℃ to−150℃)using conventional servo-hydraulic and high-strain-rate universal test machines and a split-Hopkinson-bar(SHB)apparatus.In primarily-slip-dominant deformation,the true stress–strain curves showed approximate power-law behavior,and the effects of strain rate and temperature on yield strength could be approximately described by constitutive equations linearly dependent on the rate parameter,Tln(5.3×10^(7)/ɛ˙)where T is test temperature in Kelvin andɛ˙is strain rate in s^(−1).In primarily-twin-dominant deformation,the effects of strain rate and temperature on yield and initial flow stress were negligible or small from quasi-static to 2800 s^(−1) owing to the athermal characteristics of mechanical twinning;the effects may become more pronounced with exhaustion of twinning and increasing proportion of slip. | S.Xu W.R.Tyson R.Eagleson R.Zavadil Z.Liu P.-L.Mao C.-Y.Wang S.I.Hill A.A.Luo | 2013 | Journal of Magnesium and Alloys2013，1，4： | 4 |
| 3 | AlN/S i(100)上CVD SiC薄膜的光致发光谱显示文摘本工作用化学气相淀积方法在A lN/S i(100)复合衬底上生长S iC薄膜。外延生长过程中,采用C4H4和S iH4作为反应气源,H2作为载气。样品的X-射线衍射谱和拉曼散射谱显示,所得到的外延层为六角对称的S iC薄膜。俄歇电子能谱及X-射线光电子能谱的测量结果表明,在外延膜中存在来自衬底的A l和N元素。样品的光致发光测量显示,所有的样品均可在室温下观察到位于3.03 eV和3.17 eV处的发光峰,这分别相应于4H-S iC能带中电子从导带到A l受主能级之间的辐射跃迁和电子从N施主能级到价带之间的辐射跃迁,从而表明所得的外延薄膜的多形体为4H-S iC。 | 秦臻 韩平 韩甜甜 鄢波 李志兵 谢自力 朱顺明 符凯 刘成祥 王荣华 李云菲 S.Xu N.Jiang 顾书林 张荣 郑有炓 | 2005 | 人工晶体学报2005，34，6： | 2 |
| 4 | Variation in Chromosome Constitution of the Xiaoyan Series Partial Amphiploids and Its Relationship to Stripe Rust and Stem Rust Resistance显示文摘The wild relatives of wheat(Triticum aestivum L.)contain tremendous amounts of potentially useful genes and represent a promising source of genetic diversity for wheat improvement(Bommineni and Jauhar,1997).Thinopyrum ponticum(Popd.)Barkworth and D.R.Dewey[syn.Agropyron | Qi Zheng Qiaoling Luo Zhixia Niu Hongwei Li Bin Li Steven S.Xu Zhensheng Li | 2015 | Journal of Genetics and Genomics2015，42，11： | 2 |
| 5 | 查看详情显示文摘 | Lan Q Yang F Zhang S Liu S.Xu J.Sun D | | 0，，： | 1 |
| 6 | Sonochemical Synthesis of CdSe Hollow Spherical Assemblies Via an In‐Situ Template Route显示文摘 | S.Xu H.Wang J.M.Zhu H.‐Y.Chen | 2003 | Adv Mater2003，，2： | 1 |
| 7 | Excellent strength-ductility combination in Co_(36)Cr_(15)Fe_(18)Ni_(18)Al_(8)Ti_(4)Mo_(1)multi-principal element alloys by dual-morphology B2 precipitates strengthening显示文摘Precipitation strengthening provides one of the most widely-used mechanisms for strengthen-ing multi-principal-element alloys(MPEAs).Here,we report dual-morphology B2 precipitates in Co_(36)Cr_(15)Fe_(18)Ni_(18)Al_(8)Ti_(4)Mo_(1)MPEA obtained by thermo-mechanical processing.Electron microscopy charac-terization reveals that the dual-morphology B2 precipitates are either recrystallized B2 particles formed at the grain boundaries or triple junctions with recrystallization process,or rod-like within the non-recrystallized FCC matrix.The dual-morphology B2 precipitates enhance the yield strength and ultimate tensile strength up to 1120 MPa and 1480 MPa,respectively.This work suggests the mechanical proper-ties of the alloy can be optimized by B2 precipitation strengthening to meet the needs of engineering applications. | X.S.Liu R.Li X.F.Fan Q.Q.Liu X.Tong A.X.Li S.Xu H.Yang S.B.Yu M.H.Jiang C.Huo P.F.Yu M.T.Dove G.Li | 2023 | Journal of Materials Science & Technology2023，，3： | 1 |
| 8 | Simplified descriptor system approach to delay-dependent stability and performance analyses for time-delay systems显示文摘 | S.Xu J.Lam Y.Zuo | | 0，，： | 1 |
| 9 | Critical mechanical properties and FEA simulation for crashworthiness assessment of a coarse-grained cast AM50 alloy显示文摘A coarse-grained AM50 alloy was used as a model alloy for investigation of constitutive behaviour,Charpy toughness and effect of stress state on deformation and failure of cast Mg alloys.The results provide critical mechanical properties of a cast AM50 alloy for crashworthiness assessment and development of finite element simulation techniques.For cast Mg alloys,the effect of strain rate and temperature is larger on tensile strength than on compressive strength because twinning is more extensive in compression than in tension.The effect of strain rate on compressive strength is negligible because twinning activity of the cast Mg alloy is dominant.The load vs.deflection of Charpy specimens were measured for modelling,and the effect of loading rate and temperature on load of Charpy specimens is very small because part of the specimen is in compression.The equivalent strain to fracture of the cylindrical round notched tension specimen decreases with increasing stress triaxiality;though for the flat-grooved plane strain specimen,the equivalent fracture strain remains constant over the range of stress triaxiality investigated.Because the two different specimen geometries give rise to different Lode angle values,the test results show that the Lode angle parameter is an important parameter for deformation and fracture of Mg alloys.Finite element simulations of loading of the cylindrical notched-tension and Charpy specimens were carried out using a Lode-angle dependent von Mises model,and were found to provide a reasonable description of the load-displacement curves measured in the tests.For the flat-grooved plane strain specimens,the computations under-predicted the force-displacement response measured. | S.Xu C.H.M.Simha M.Gesing J.Liang J.Lo | 2015 | Journal of Magnesium and Alloys2015，3，3： | 1 |
| 10 | 查看详情显示文摘 | H.Lin L.Wray Y.Xia S.Xu S.Jia R.Cava A.Bansil and M.Hasan | | 0，，： | 1 |
| 11 | Positive Real Con-trol for Uncertain Two-Dimensional Systems显示文摘 | S.Xu J.Lam Z Lin K.Galkowski | | 0，，49： | 1 |
| 12 | Positive Real Control for 2-D DiscreteDelayed Systems via Output Feedback Controllers显示文摘 | H.Xu S.Xu J.Lam | | 0，，216： | 1 |
| 13 | 查看详情显示文摘 | H.Q.Liang S.Xu Y.L.Shah | | 0，，： | 1 |
| 14 | Photogeneration of Fluorescent Silver Nanoclusters in Polymer Microgels显示文摘 | J.Zhang S.Xu E.Kumacheva | 2005 | Adv Mater2005，，19： | 1 |
| 15 | Sonochemical Synthesis of CdSe Hollow Spherical Assemblies Via an In‐Situ Template Route显示文摘 | S.Xu H.Wang J.M.Zhu H.‐Y.Chen | 2003 | Adv Mater2003，，2： | 1 |
| 16 | COMPUTATION OF CONTINUOUS WAVELET TRANSFORM AT DYADIC SCALES BY SUBDIVISION SCHEME显示文摘A new algorithm to compute continuous wavelet transforms at dyadic scales is proposed here. Our approach has a similar implementation with the standard algorithme a trous and can coincide with it in the one dimensional lower order spline case.Our algorithm can have arbitrary order of approximation and is applicable to the multidimensional case.We present this algorithm in a general case with emphasis on splines anti quast in terpolations.Numerical examples are included to justify our theorerical discussion. | S.Riemenschneider S.Xu | 1996 | Analysis in Theory and Applications1996，12，4： | 0 |
| 17 | Elimination of the yellow pigment gene PSY-E2 tightly linked to the Fusarium head blight resistance gene Fhb7 from Thinopyrum ponticum显示文摘Fhb7 is a major gene that was transferred from Thinopyrum ponticum to chromosome 7D of wheat(Triticum aestivum)and confers resistance to both Fusarium head blight(FHB)and Fusarium crown rot(FCR).However,Fhb7 is tightly linked to the PSY-E2 gene,which causes yellow flour,limiting its application in breeding.To break this linkage,marker K-PSY was developed for tagging PSY-E2 and used with Fhb7 markers to identify recombination between the two genes.Screening 21,000 BC1F2 backcross progeny(Chinese Spring ph1bph1b*2/SDAU 2028)revealed two Fhb7^(+)wheat-Tp7el_(2)L lines,Shannong 2–16and Shannong 16–1,that carry a desired truncated Fhb7^(+)translocation segment without PSY-E2.The two lines show levels of resistance to FHB and FCR similar to those of the original translocation line SDAU 2028,but have white flour.To facilitate Fhb7 use in wheat breeding,STS markers were developed and used to isolate Fhb7 on a truncated Tp7el_(2) translocation segment.Near-isogenic lines carrying the Fhb7^(+)segment were generated in the backgrounds of three commercial cultivars,and Fhb7^(+)lines showed increased FHB and FCR resistance without yield penalty.The breakage of the tight linkage between Fhb7 and PSY-E2 via homoeologous recombination provides genetic resources for improvement of wheat resistance to FHB and FCR and permit the large-scale deployment of Fhb7 in breeding using marker-assisted selection. | Xuefeng Li Dong Li Yu Xuan Ziming He Lanfei Zhao Yongchao Hao Wenyang Ge Shoushen Xu Bingqian Hou Biao Wang Jun Guo Wenwen Liu Mingzhu Li Yi Han Cunyao Bo Yinguang Bao Zengjun Qi Steven S.Xu Guihua Bai Hongwei Wang Lingrang Kong | 2023 | The Crop Journal2023，11，3： | 0 |
| 18 | 具有双重特异性的赖氨酸氧化酶样蛋白3参与调控STAT3显示文摘文章简介在本篇论文中,作者发现了一类新的去乙酰化酶——赖氨酸氧化酶样蛋白3(Loxl3)。研究证实,Loxl3主要集中定位于细胞核内,在此与STAT3相联系,发挥催化STAT3脱乙酰化的作用。 | Li Ma 黄超 Xiong-Jun Wang Dazhuan Eric Xin Li-shun Wang Quanli C.Zou Ya-nan S.Zhang Min-dian Tan Yu-mei Wang Ting C.Zhao Devasis Chatterjee Rachel A.Altura Chuangui Wang Yan S.Xu Jing-hua Yang Yong-sheng Fan Bao-hui Han Jianmin Si Xiaoren Zhang Jinke Cheng 常智杰 秦樾 | 2018 | 科学新闻2018，0，4： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员