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214篇 您的检索式:作者名="Ren J."
    题名 作者 年代 出处 被引量
1Karyotype Stability and Unbiased Fractionation in the Paleo-Allotetraploid Cucurbita Genomes显示文摘Honghe Sun Shan WU Guoyu Zhang Chen Jiao Shaogui Guo Yi Ren Jie Zhang Haiying Zhang Guoyi Gong Zhangcai Jia Fan Zhang Jiaxing Tian William J. Lucas Jeff J. Doyle Haizhen Li Zhangjun Fei Yong Xu 2017Molecular Plant2017,10,10:33
2^(40)Ar/^(39)Ar age evidence for Altyn fault tectonic activities in western China显示文摘Four 40Ar/39Ar age groups of mica, hornblende and K-feldspar were obtained from Proterozoic and early Paleozoic metamorphic rocks in the Aksay-Dangjin Pass area, western China. The samples away from the middle shear zone of the Altyn fault belt yield two plateau age groups in the range of 461—445.2 Ma and 414.9—342.8 Ma, respec-tively. They represent the tectono-thermal events that had been recorded in the rocks that were displaced by the Altyn strike-slip fault in late Ordovician-early Silurian and Devo-nian, respectively. These two age groups should be related to the closures of Northern and Southern Qilian Oceans. The deformed granitic gneiss from the northern belt gives a pla-teau age group of 178.4—137.5 Ma, which is interpreted as the active age of the Altyn fault in the middle-late Jurassic- early Cretaceous and should be related to the accretion of Lhasa block to the north. The sample from the middle shear zone of the Altyn fault belt yields two plateau ages of 36.4 and 26.3 Ma, respectively, suggesting the strike-slip move-ment with strong metamorphism at greenschist facies along the Altyn fault in the late Eocene. This event occurred in the most areas of the northern Tibet Plateau and should be in response in the north to the collision between Indian and Eurasian continents. The present study demonstrates that the Altyn fault is characterized by multiple pulse-style activi-ties under the tectonic setting of convergence between the Indian and Eurasian continents.LIU Yongjiang1, J. Genser2, GE Xiaohong1, F. Neubauer2, G. Friedl2, CHANG Lihua1, REN Shoumai3 & R. Handler2 1. College of Earth Sciences, Jilin University, Changchun 130061, China 2. Institute of Geology and Paleontology, Salzburg University, Salzburg A-5020, Austrilia 3. Statigraphic Research Center for Oil and Natural Gas, Ministry of Land and Resources, Beijing 100034, China Correspondence should be addressed to Liu Yongjiang (e-mail: liuyj@ email.jlu.edu.cn) 2003Chinese Science Bulletin2003,48,18:28
3CLE25 peptide regulates phloem initiation in Arabidopsis through a CLERK-CLV2 receptor complex显示文摘The phloem, located within the vascular system, is critical for delivery of nutrients and signaling molecules throughout the plant body. Although the morphological process and several factors regulating phloem differentiation have been reported, the molecular mechanism underlying its initiation remains largely unknown. Here, we report that the small peptide-coding gene, CLAVATA 3 (CLV3)/EMBEYO SURROUNDING REGION 25 (CLE25), the expression of which begins in provascular initial cells of 64-cell-staged embryos, and continues in sieve element-procambium stem cells and phloem lineage cells, during postembryonic root development, facilitates phloem initiation in Arabidopsis. Knockout of CLE25 led to delayed protophloem formation, and in situ expression of an antagonistic CLE25G6T peptide compromised the fate-determining periclinal division of the sieve element precursor cell and the continuity of the phloem in roots. In stems of CLE25G6T plants the phloem formation was also compromised, and procambial cells were over-accumulated. Genetic and biochemical analyses indicated that a complex, consisting of the CLE-RESISTANT RECEPTOR KINASE (CLERK) leucinerich repeat (LRR) receptor kinase and the CLV2 LRR receptor- like protein, is involved in perceiving the CLE25 peptide. Similar to CLE25, CLERK was also expressed during early embryogenesis. Taken together, our findings suggest that CLE25 regulates phloem initiation in Arabidopsis through a CLERK-CLV2 receptor complex.Shi-Chao Ren Xiu-Fen Song Wen-Qiang Chen Ran Lu William J. Lucas Chun-Ming Liu 2019Journal of Integrative Plant Biology2019,61,10:10
4Microstructures and mechanical properties of Ti3Al/Ni-based superalloy joints brazed with AuNi filler metal显示文摘For the purpose of high-temperature service and the weight reduction in aviation engineering applications, the dissimilar joining of Ti3Al-based alloy to Ni-based superalloy (GH536) was conducted using Au-17.5Ni (wt%) brazing filler metal. The microstructure and chemical composition at the interfaces were investigated by scanning electron microscope, X-ray diffraction and transmission electron microscope. The diffusion behaviors of elements were analyzed as well. The results indicated that the Ti3Al/GH536 joint microstructure was characterized by multiple layer structures. Element Ni from Au-Ni filler metal reacted with Ti3Al base metal, leading to the formation of AlNi2Ti and NiTi compounds. Element Ni from Ti3Al base metal reacted with Ni and thus Ni3Nb phase was detected in the joint central area. Due to the dissolution of Ni-based superalloy,(Ni,Au) solid solution ((Ni,Au)ss) and Ni-rich phase were visible adjacent to the superalloy side. The average tensile strength of all the joints brazed at 1253 K for 5-20 min was above 356 MPa at room-temperature. In particular, the joints brazed at 1253 K/15 min presented the maximum tensile strength of434 MPa at room-temperature, and the strength of 314 MPa was maintained at 923 K. AlNi2Ti compound resulted in the highest hardness area and the fracture of the samples subjected to the tensile test mainly occurred in this zone.H.S. Ren H.P.Xiong W.M. Long B. Chen Y.X. Shen J. Pang 2019Journal of Materials Science & Technology2019,35,9:7
5Sources, evolution and impacts of EC and OC in snow on sea ice: a measurement study in Barrow, Alaska显示文摘Based on the field measurements in Barrow, Alaska within the period of April-May 2015, we investigate the sources and variations of elemental carbon(EC) and organic carbon(OC) in the surface layer of snowpack on sea ice, and estimate their effects on the sea ice albedo. Results show that the snow OC in Barrow are from natural sources(e.g. terrestrial higher plants and micro-organisms) mainly, as well as biomass burning(e.g. forest fires and straw combustion) as an important part. Both EC and OC can accumulate at the snow surface with snow melt. The variations in EC and OC and liquid water content in the snow layer are well consistent during the snow-melting period. A higher rate of snow melt implied a more efficient enrichment of EC and OC. In the last phase of snow melt, the concentration increased to a maximum of 16.2 ng/g for EC and 128 ng/g for OC, which is ~10 times larger than those before snow melt onset. Except for the dominant influence of melt amplification mechanism, the variation in concentrations of EC and OC could be disturbed by the air temperature fluctuation and snowfall. Our study indicates that the lightabsorbing impurities contributed 1.6%-5.1% to the reduction in sea ice albedo with melt during the measurement period. The significant period oflight-absorbing impurities influencing on sea ice albedo begins with the rapid melting of overlying snow and ends before the melt ponds formed widely, which lasted for about 10 days in Barrow, 2015.Tingfeng Dou Cunde Xiao Zhiheng Du J. J. Schauer Hong Ren Baozhu Ge Aihong Xie Jihua Tan Pingqing Fu Yuanxun Zhang 2017Science Bulletin2017,62,22:6
6Nitrogen pollution and source identification of urban ecosystem surface water in Beijing显示文摘Yufen REN Zhiwei XU Xinyu ZHANG Xiaoke WANG Xiaomin SUN D. J. BALLANTINE Shengzhong WANG 2014Frontiers of Environmental Science & Engineering2014,8,1:6
7A Processive Arabidopsis Formin Modulates Actin Filament Dynamics in Association with Profilin显示文摘Formins 是被含有为房间分割和房间极性重要的肌动朊细胞骨架组织和动力学的保存管理者。由哪个多样的 formins 在植物调整肌动朊动力学的机制仍然不好被理解。在 vitro 使用单个分子的成像技术,我们直接观察到 Arabidopsis thaliana formin 的 FH1-FH2 领域, AtFH14, processively 属于是的肌动朊细丝的有倒钩的目的一更暗淡并且在 90% 减缓他们的延伸率。FH1-FH2 的附件坚持是集中依赖者。由三倍颜色的全部的内部思考荧光显微镜学的使用,而且,我们发现了那 ABP29,有倒钩结束的盖住蛋白质,在细丝与 FH1-FH2 竞争有倒钩的结束,在它的绑定与 AtFH14 是互相独占的的地方。面对不同植物 profilin isoforms, FH1-FH2 从大约 10 ~ 42 次提高细丝延伸率。细丝扣环当 FH1-FH2 明确地被抛锚盖住幻灯片时,推进显示 AtFH14 在伸长上 processively 移动有倒钩的结束。在高集中, AtFH14 随机绑肌动朊细丝进反平行或平行的像锭子的结构;然而, FH1-FH2-mediated 捆变得面对植物 profilins 更薄、更长。这是从植物的 processive formin 的直接示范。我们的结果也在与 profilin 经由协会调整肌动朊动力学照亮 AtFH14 的分子的机制。Sha Zhang Chang Liu Jiaojiao Wang Zhanhong Ren Christopher J. Staiger Haiyun Ren 2016Molecular Plant2016,9,6:5
8Effects of PI3-k/Akt short hairpin RNA on proliferation, fibronectin production and synthesis of thrombospondin-1 and transforming growth factor-beta(1 ) in glomerular mesangial cells induced by sublytic C5b-9 complexes显示文摘Gao, L. Zhang, Y. Qiu, W. Xu, W. Feng, X. Ren, J. Jiang, X. Wang, H. Zhao, D. Wang, Y. 2009南京医科大学学报(自然科学版)2009,29,3:5
9A Bayesian Network Approach for Offshore Risk Analysis Through Linguistic Variables显示文摘This paper presents a new approach for offshore risk analysis that is capable of dealing with linguistic probabilities in Bayesian networks(BNs).In this paper,linguistic probabilities are used to describe occurrence likelihood of hazardous events that may cause possible accidents in offshore operations.In order to use fuzzy information,an f-weighted valuation function is proposed to transform linguistic judgements into crisp probability distributions which can be easily put into a BN to model causal relationships among risk factors.The use of linguistic variables makes it easier for human experts to express their knowledge,and the transformation of linguistic judgements into crisp probabilities can significantly save the cost of computation,modifying and maintaining a BN model.The flexibility of the method allows for multiple forms of information to be used to quantify model relationships,including formally assessed expert opinion when quantitative data are lacking,or when only qualitative or vague statements can be made.The model is a modular representation of uncertain knowledge caused due to randomness,vagueness and ignorance.This makes the risk analysis of offshore engineering systems more functional and easier in many assessment contexts.Specifically,the proposed f-weighted valuation function takes into account not only the dominating values,but also the α-level values that are ignored by conventional valuation methods.A case study of the collision risk between a Floating Production,Storage and Off-loading(FPSO) unit and the authorised vessels due to human elements during operation is used to illustrate the application of the proposed model.Ren J. Wang J. Jenkinson I. Xu D. L. Yang J. B. 2007China Ocean Engineering2007,21,3:4
10Severe human infection with a novel avian-origin influenza A(H7N4) virus显示文摘Human infections with influenza H7 subtypes, such as H7N9, have raised concerns worldwide. Here, we report a human infection with a novel influenza A(H7N4) virus. A 68 years-old woman with cardiovascular and cholecystic comorbidities developed rapidly progressed pneumonia with influenza-like-illness as initial symptom, recovered after 23 days-hospitalization including 8 days in ICU. Laboratory indicators for liver and blood coagulation dysfunction were observed. Oseltamivir phosphate, glucocorticoids and antibiotics were jointly implemented, with nasal catheterization of oxygen inhalation for this patient.We obtained the medical records and collected serial respiratory and blood specimens from her. We collected throat, cloacal and/or feces samples of poultry and wild birds from the patient's backyard, neighborhood, local live poultry markets(LPMs) and the nearest lake. All close contacts of the patient were followed up and sampled with throat swabs and sera. Influenza viruses and other respiratory pathogens were tested by real-time RT-PCR, viral culturing and/or sequencing for human respiratory and bird samples. Micro-neutralizing assay was performed for sera. A novel reassortant wild bird-origin H7N4 virus is identified from the patient and her backyard poultry(chickens and ducks) by sequencing, which is distinct from previously-reported avian H7N4 and H7N9 viruses. At least four folds increase of neutralizing antibodies to H7N4 was detected in her convalescent sera. No samples from close contacts, wild birds or other poultry were tested positive for H7N4 by real-time RT-PCR.Xiang Huo Lun-biao Cui Cong Chen Dayan Wang Xian Qi Ming-hao Zhou Xiling Guo Fengming Wang William J. Liu Weirong Kong Daxin Ni Ying Chi Yiyue Ge Haodi Huang Feifei Hu Chao Li Xiang Zhao Ruiqi Ren Chang-jun Bao George F. Gao Feng-Cai Zhu 2018Science Bulletin2018,63,16:4
11STUDY OF THE EFFECT OF BORON CONTENT ON THE ORDERED EXTENT OF THE Ni_3Al INTERMETALLICS COMPOUND BY AP-FIM显示文摘By using AP-FIM the varity of the ordered degree of Ni3Al with L12 structure with B content was studied. The possibility of boron improving ductility was also discussed from bonding between Ni and Al atoms, and antisite defects in Ni3Al. The extent of ordering is reduced with an increase in boron content and the autisite defects are most obvious for 0.52at.K B-doped sample that has the best ductility. Some results were verified by X-ray diffraction non. The addition of boron not only influences electron environment at grain boundary but also in the interior of Ni3Al gm ins, the latter is favorable to improve the ductility of Ni3Al grains.D.G. Ren Z.Q. Li X.S. Fan and J. T. Guo Laboratory of Atomic Imaging of Solids, Institute of Metal Research, The Chinese Academy of Sciences, Shenyang 110015, China 2000Acta Metallurgica Sinica(English Letters)2000,13,4:3
12Nonpolypoid neoplastic lesions of the colorectal mucosa显示文摘Shin ei Kudo René Lambert John I. Allen Hiroaki Fujii Takahiro Fujii Hiroshi Kashida Takahisa Matsuda Masaki Mori Hiroshi Saito Tadakazu Shimoda Shinji Tanaka Hidenobu Watanabe Joseph J. Sung Andrew D. Feld John M. Inadomi Michael J. O’Brien David A. Lieb 2008Gastrointestinal Endoscopy2008,,4:3
13Uniformly dispersed FeOx atomic clusters by pulsed arc plasma deposition: An efficient electrocatalyst for improving the performance of Li-O2 battery显示文摘现在的学习探索了一个新方法改进非宝贵的金属的催化活动,特别在电气化学的反应。弧分泌物生产的高度电离的 Fe 血浆一致地在多孔的碳底层上被扔并且在碳表面上形成了原子簇。同样准备的 FeO x /C 材料在不同的当前的率下面在一节可充电的 Li-O 2 电池作为阴极材料被测试。结果以周期生活和反应率在电池性能显示出重要改进。而且, X 光检查衍射(XRD ) 和扫描电子显微镜学(SEM ) 结果证明同样准备的阴极材料稳定了阴极并且减少了方面反应并且当前的率是在分泌物产品的成核的一个关键因素。Xiangyi Luo Jun Lu Evan Sohm Lu Ma Tianpin Wu Jianguo Wen Dantong Qiu YunKai Xu Yang Ren Dean J. Miller Khalil Amine 2016Nano Research2016,9,7:3
14Challenges for land system science显示文摘Mark D.A. Rounsevell Bas Pedroli Karl-Heinz Erb Marc Gramberger Anne Gravsholt Busck Helmut Haberl S?ren Kristensen Tobias Kuemmerle Sandra Lavorel Marcus Lindner Hermann Lotze-Campen Marc J. Metzger David Murray-Rust Alexander Popp Marta Pérez-Soba Anett 2012Land Use Policy2012,,4:2
15Revisiting the precipitation sequence in Al–Zn–Mg-based alloys by high-resolution transmission electron microscopy显示文摘J.Z. Liu J.H. Chen X.B. Yang S. Ren C.L. Wu H.Y. Xu J. Zou 2010Scripta Materialia2010,,11:2
16Acute phlegmonous gastritis显示文摘Marc J. Schultz René W.M. van der Hulst Guido N.J. Tytgat 1996Gastrointestinal Endoscopy1996,,1:2
17Laparoendoscopic Single-site Surgery in Urology: Worldwide Multi-institutional Analysis of 1076 Cases显示文摘Jihad H. Kaouk Riccardo Autorino Fernando J. Kim Deok Hyun Han Seung Wook Lee Sun Yinghao Jeffrey A. Cadeddu Ithaar H. Derweesh Lee Richstone Luca Cindolo Anibal Branco Francesco Greco Mohamad Allaf René Sotelo Evangelos Liatsikos Jens-Uwe Stolzenburg Abh 2011European Urology2011,,5:2
18Surface ozone trend details and interpretations in Beijing, 2001–2006显示文摘Tang G. Li X. Wang Y. Xin J. Ren X 2009Atmospheric Chemistry and Physics2009,,181:2
19Surgical, oncological, and obstetrical outcomes after abdominal radical trachelectomy — A systematic literature review显示文摘René Pareja Gabriel J. Rendón Carlos Millán Sanz-Lomana Otto Monzón Pedro T. Ramirez 2013Gynecologic Oncology2013,,:2
20Proton Pump Inhibitors Partially Restore Mucosal Integrity in Patients with PPI-responsive Esophageal Eosinophilia but not Eosinophilic Esophagitis显示文摘Bram D. van Rhijn Pim W. Weijenborg Joanne Verheij Marius A. van den Bergh Weerman Caroline Verseijden René M.J.G.J. van den Wijngaard Wouter J. de Jonge Andreas J.P.M. Smout Albert J. Bredenoord 2014Clinical Gastroenterology and Hepatology2014,,:2
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