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204篇 您的检索式:作者名="F. Xu"
    题名 作者 年代 出处 被引量
1EFFECT OF Zr ADDITION TO Ti-KILLED STEEL ON INCLUSION FORMATION AND MICROSTRUCTURAL EVOLUTION IN WELDING INDUCED COARSE-GRAINED HEAT AFFECTED ZONE显示文摘化学部件和忍受 Ti 包括的尺寸分发上的锆的效果,赞成了导致的、纹理粗糙的热影响了的焊接的谷物精炼地区(CGHAZ ) 与在杀死 Ti 的钢提高了影响坚韧,它基于试验性的观察和热力学的计算被检验。它显示包括的化学成分逐渐地从 Ti-O 氧化物变化了到 Ti-O+Zr-O 复合氧化物和 ZrO2 氧化物的一个单个阶段,作为内容从零增加了到 0.0100% 的 Zr。 Zr 的踪迹(0.0030%0.0080%,在液体钢取决于氧内容)因为 ZrO2 氧化物的更大的特定的密度,为 Ti 氧化物提供了大量起核心作用的核心,并且生产了有利的包括的小尺寸分布因为有在 CGHAZ 的高成核率的针状的铁酸盐转变,和针状的铁酸盐的大量的部分在 CGHAZ 被获得,与提高的影响坚韧。否则, Zr (0.0100%) 的一个高内容生产了单个阶段 ZrO2,它是无力的起核心作用由铁酸盐方面板组成的针状的铁酸盐和谷物边界铁酸盐在 CGHAZ 发展了。试验性的结果被热力学的计算证实。F. Chai C.F. Yang H. Su Y.Q. Zhang Z. Xu Y.H. Yang 2008Acta Metallurgica Sinica(English Letters)2008,21,3:18
2A Single Transcript CRISPR-Cas9 System for Efficient Genome Editing in Plants显示文摘Tang, Xu Zheng, Xuelian Qi, Yiping Zhang, Dengwei Cheng, Yan Tang, Aiting Voytas, Daniel F. Zhang, Yong 2016Molecular Plant2016,9,7:8
3FE SIMULATION OF CENTER CRACK OCCURRENCE IN TUBE ROUNDS DURING TWO-ROLL ROTARY ROLLING PROCESS显示文摘With the aid of FE (finite element) code MSC.Superform 2005, 2-D coupled thermo-mechanical simulation of center-crack occurrence in round billet during 2-roll rotary rolling process was presented using Oyane ductile fracture criteria. A simple modeling is put forward based on the spiral motion of the workpiece as an essential characteristic in movement. The influence of the feed angle and the entry cone angle of the main roll on the process was taken into account in the modeling. The soundness for simplifying the 3-D rotary rolling into a 2-D problem was discussed. By adopting the parameters of Diescher piercer in 140mm mandrel mill of Bao Steel, the distribution and development of strain / stress were analyzed, and the eigen value of ductile fracture as well. The critical percentage of diameter reduction was obtained from the simulation. The result showed a good agreement with the experimental value, and therefore was of widely guiding significance to the practical process for rationally formulating the deformation parameters of steel tube piercing.S.Z. Li J. Xu Y.D. Yin J.G. Xue F. Pan J.M. Zheng J.H. Yoon 2007Acta Metallurgica Sinica(English Letters)2007,20,3:7
4Genome-wide Analysis of Transcriptional Variability in a Large Maize-Teosinte Population显示文摘基因表示规定在控制植物显型和改编起一个重要作用。这里,我们报导对通过 transcriptome 的基因表示变化的一个全面评价大 maize-teosinte 分析试验性的人口。染色体宽的印射识别了 25 ? 660 表示为 17 的量的特点 loci (eQTL )? 311 基因,捕获表示变化的一个崭新的范围。我们发现本地 eQTL 更经常被印射到邻近的基因,显示表示 piggybacking 的一个模式,它因而创造了共同调整的基因簇。在共同调整的基因簇以内的基因趋于有相关功能和分享的染色质修正。远 eQTL 与他们显著地在特定的功能的范畴充实的目标形成了 125 个重要远 eQTL 热点。由集成信息的不同来源,我们为许多新陈代谢的小径识别了通常认为的 trans- 管理者。我们证明 bHLH 抄写因素 R1 和 hexokinase HEX9 可能分别地为 flavonoid 生合成和 glycolysis 充当关键管理者。而且,我们证明驯服或改进显著地影响了全球基因表示,与选择指向的许多基因。特别兴趣,为生合成可能经历了的 benzoxazinoid 的 Bx 基因协调了在玉米和 teosinte 之间的 cis 规章的分叉,并且当玉米与一个不同草食动物社区传播了进适度的环境,使 Bx12 失去活性的 transposon 插入在强壮的选择下面。Xufeng Wang Qiuyue Chen Yaoyao Wu Zachary H. Lemmon Guanghui Xu Cheng Huang Yameng Liang Dingyi Xu Dan Li John F. Doebley Feng Tian 2018Molecular Plant2018,11,3:7
5Variant genotypes and haplotypes of the epidermal growth factor gene promoter are associated with a decreased risk of gastric cancer in a high-risk Chinese population显示文摘Jin, G. F. Miao, R. F. Deng, Y. M. Hu, Z. B. Zhou, Y. Tan, Y. F. Wang, J. M. Hua, Z. L. Ding, W. L. Wang, L. Chen, W. S. Shen, J. Wang, X. R. Xu, Y. C. Shen, H. B. 2007南京医科大学学报(自然科学版)2007,27,10:7
6Microstructure and Mechanical Properties of Nanocrystalline Tungsten Thin Films显示文摘Tungsten (W) thin films were prepared by magnetron sputtering onto Si (100) substrates. Their microstructures were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM). The hardness and modulus were evaluated by nanoindentation. It is found that a 30 nm Cr sticking layer induces structure changes of deposited W film from β-W to α-W structure. In addition, remarkable hardness enhancement both for the deposited and annealed W films, were compared with that of bulk coarse-grained W, although their nanoindentation modulus is very close to that of corresponding bulk W. The intrinsic reasons that lead to structure changes and super hardness are discussed.H.L. Sun, Z.X. Song, D.G. Guo, F. Ma and K.W. Xu State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi an Jiaotong University, Xi’an 710049, China 2010Journal of Materials Science & Technology2010,26,1:6
7HDAC2 deacetylates class Ⅱ transactivator and suppresses its activity in macrophages and smooth muscle cells显示文摘Kong, X. C. 2009南京医科大学学报(自然科学版)2009,29,4:6
8Gravity Changes Before Large Earthquakes in China: 1998-2005显示文摘Although it is well known that coseismic gravity changes take place during an earthquake, previous research has not yielded convincing evidence demonstrating that significant gravity changes occur before large earthquakes. Furthermore, even if we suspect that gravity changes occur before large earthquakes, we have yet to demonstrate how to consistently observe these changes for useful earthquake forecast that would bring benefits to society. We analyzed ground gravity survey data obtained in 1998, 2000, 2002, and 2005 at stations of the Crustal Movement Observation Network of China (CMONOC) and examined gravity changes be-fore the occurrence of nine large (Ms≥6.8) earthquakes that ruptured within or near China's Mainland and Taiwan from November 2001 to August 2008. Results from this analysis show that significant gravity changes occurred across a large region before each of these nine large earthquakes, and these changes were detected by repeated ground gravity surveys through CMONOC. Although these gravity changes were significant, more research is needed to investigate whether these gravity changes could be viewed as precursors of large earthquakes. Limitations and uncertainties in the data include sparseness of the gravity monitoring network, long time intervals between consecutive gravity surveys, inevitable measurement errors, hydrological effects on gravity, and effects of vertical crustal movements on gravity. Based on these observations, we make several recommendations about possible future direc-tions in earthquake-related research using gravity monitoring data.ZHAN F. Benjamin ZHU Yiqing NING Jinsheng ZHOU Jiangcun LIANG Weifeng XU Yunma 2011Geo-Spatial Information Science2011,14,1:5
9Full-band error control and crack-free surface fabrication techniques for ultra-precision fly cutting of large-aperture KDP crystals显示文摘F. H. ZHANG S. F. WANG C. H. AN J. WANG Q. XU 2017Frontiers of Mechanical Engineering2017,12,2:5
10Closed-form solutions for free vibration of rectangular FGM thin plates resting on elastic foundation显示文摘This article presents closed-form solutions for the frequency analysis of rectangular functionally graded material(FGM) thin plates subjected to initially in-plane loads and with an elastic foundation. Based on classical thin plate theory, the governing differential equations are derived using Hamilton's principle. A neutral surface is used to eliminate stretching–bending coupling in FGM plates on the basis of the assumption of constant Poisson's ratio. The resulting governing equation of FGM thin plates has the same form as homogeneous thin plates. The separation-ofvariables method is adopted to obtain solutions for the free vibration problems of rectangular FGM thin plates with separable boundary conditions, including, for example, clamped plates. The obtained normal modes and frequencies are in elegant closed forms, and present formulations and solutions are validated by comparing present results with those in the literature and finite element method results obtained by the authors. A parameter study reveals the effects of the power law index n and aspect ratio a/b on frequencies.T. F. Xu Y. F. Xing 2016Acta Mechanica Sinica2016,32,6:4
11精神分裂症患者的情感体验和表达(英文)显示文摘背景:精神分裂症存在情感体验和表达障碍。然而,大多数以往研究往往只局限于情感体验(尤其是快感缺乏)或只针对表达。较少有同时研究精神分裂症患者情感体验和表达。目的 :本研究旨在考察精神分裂症患者的快感体验和情感表达。尤其是,特别关注精神分裂症患者的情感障碍(包括快感体验和表达)和阴性症状之间的关系。方法 :150例患者完成了愉快情绪体验量表(Temporal Experience of Pleasure Scale)和情感表达量表(Emotional Expressivity Scale)的评估。结果 :精神分裂症患者表现出快感缺乏,但情感表达的能力完整。以阴性症状为主的精神分裂症患者在期待性愉快体验,尤其是抽象性期待愉快体验上的缺损更为明显结论:研究结果表明,精神分裂症患者存在出快感缺乏,但他们表达情感的能力似乎完好无损。快感缺乏尤以阴性症状为主的精神分裂症患者更为突出。Min-yi CHU Xu LI Qin-yu LV Zheng-hui YI Eric F. C. CHEUNG Raymond C. K. CHAN 2017上海精神医学2017,29,5:3
12Occurrence of avian leukosis virus subgroup J in commercial layer flocks in China显示文摘Binrui Xu Weixing Dong Chunming Yu Zhaoqing He Yanli Lv Yanzheng Sun Xiaoyu Feng Ning Li L. F. Lee Maoxiang Li 2004Avian Pathology2004,,1:3
13Fast-track surgery improves postoperative recovery in patients undergoing partial hepatectomy for primary liver cancer: A prospective randomized controlled trial显示文摘C.Y. Ni Y. Yang Y.Q. Chang H. Cai B. Xu F. Yang W.Y. Lau Z.H. Wang W.P. Zhou 2013European Journal of Surgical Oncology2013,,:3
14Safety and radiation-enhancing effect of sodium glycididazole in locoregionally advanced laryngeal cancers previously treated with platinum-containing chemotherapy regimens: A preliminary report显示文摘Y.C. Zeng R. Wu Z.G. Xu X.Y. Zhang G.L. Fan L.N. Wu Y.M. Wang S.H. Hao W. Zheng X.D. Chen F. Chi Z.Y. Zhang X. Li X.Y. Jin W. Chen S.L. Wang F.D. Xiao E.Y. Wang X.Q. Dong L.B. Zhang M.X. Jia H.H.X. Xia H.B. Zhang Y. Li 2009Cancer / Radiothérapie2009,,1:2
15The accuracy of circulating micro RNA ‐21 in the diagnosis of colorectal cancer: a systematic review and meta‐analysis显示文摘F. Xu L. Xu M. Wang G. An G. Feng 2015Colorectal Dis2015,,5:2
16Serological Investigation of Laboratory-Confirmed and Suspected Ebola Virus Disease Patients During the Late Phase of the Ebola Outbreak in Sierra Leone显示文摘This study aimed to investigate the serological characteristics of Ebola virus(EBOV) infection during the late phase of the Ebola outbreak in Sierra Leone. In total, 877 blood samples from 694 suspected Ebola virus disease(EVD) cases assessed from March to December 2015, were analyzed via real-time reverse transcription polymerase chain reaction(RT-PCR) for viral RNA and enzyme-linked immunosorbent assay(ELISA) and Luminex to detect antibodies against EBOV. Viral load and EBOV-specific IgM/IgG titers displayed a declining trend during March to December 2015. Viral RNA load decreased rapidly at earlier stages after disease onset, while EBOV-specific IgM and IgG still persisted in 58.1%(18/31) and 93.5%(29/31) of the confirmed EVD patients and in 3.8%(25/663) and 17.8%(118/663) of the RNA-negative suspected patients in the later phase, respectively. Dynamic analysis of longitudinally collected samples from eight EVD patients revealed typically reversed trends of declining viral load and increasing IgM and/or IgG titers in response to the EBOV infection.The present results indicate that certain populations of Sierra Leone developed immunity to an EBOV infection in the late phase of the outbreak, providing novel insights into the risk assessment of EBOV infections among human populations.Yang Liu YuLan Sun Wei Wu AQian Li XianDa Yang Shuo Zhang Chuan Li QiuDong Su ShaoJian Cai DaPeng Sun HaiYang Hu Zhe Zhang XiuXu Yang Idrissa Kamara Sheku Koroma Gerald Bangura Alie Tia Abdul Kamara Matt Lebby Brima Kargbo Jiandong Li Shiwen Wang XiaoPing Dong YueLong Shu WenBo Xu George F. Gao GuiZhen Wu DeXin Li William J. Liu MiFang Liang 2018Virologica Sinica2018,33,4:2
17Use of Polyglycolic Acid Unwoven and Woven Fibers for Tendon Engineering in vitro显示文摘X. Wei P. H. Zhang W. Z. Wang Z. Q. Tan D. J. Cao F. Xu L. Cui W. Liu Y. L. Cao 2005中国生物学文摘2005,19,10:2
18Deregulated expression of Notch receptors in human hepatocellular carcinoma显示文摘J. Gao Z. Song Y. Chen L. Xia J. Wang R. Fan R. Du F. Zhang L. Hong J. Song X. Zou H. Xu G. Zheng J. Liu D. Fan 2007Digestive and Liver Disease2007,,2:2
19Surface soil moisture parameterization of the VIC-2L model: Evaluation and modification显示文摘Xu Liang Eric F. Wood Dennis P. Lettenmaier 1996Global and Planetary Change1996,,1:2
20The Histone Demethylase KDM1A Sustains the Oncogenic Potential of MLL-AF9 Leukemia Stem Cells显示文摘William J. Harris Xu Huang James T. Lynch Gary J. Spencer James R. Hitchin Yaoyong Li Filippo Ciceri Julian G. Blaser Brigit F. Greystoke Allan M. Jordan Crispin J. Miller Donald J. Ogilvie Tim C.P. Somervaille 2012Cancer Cell2012,,4:2
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