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951篇 您的检索式:作者名="C. Chen"
    题名 作者 年代 出处 被引量
1The Global Boundary Stratotype Section and Point (GSSP) for the base of the Hirnantian Stage (the uppermost of the Ordovician System)显示文摘Xu Chen Jiayu Rong Junxuan Fan Renbin Zhan Charles E. Mitchell David A. T. Harper Michael J. Melchin Ping'an Peng Stan C. Finney Xiaofeng Wang 2006Episodes2006,29,3:61
2血管性认知损害诊断的进一步规范化:血管性认知损害分类共识研究组指南显示文摘引言血管性认知损害(vascular cognitive impairment,VCI)诊断共识的缺乏(体现为多种不同评估方案的使用),妨碍了对其理解和治疗的推进.多个国家的大量临床医生和研究人员参与了2个阶段血管性认知损害分类共识研究(Vascular Impairment of Cognition Classification Consensus Study,VICCCS),旨在就VCI的诊断原则(VICCCS-1)和诊断方案(VICCCS-2)达成一致意见.本文提供了VICCCS-2的相关内容.方法使用VICCCS-1达成的原则和已发表的诊断指南作为在线德尔菲(Delphi)调查的参考基点,以期对VCI的临床诊断达成共识.结果共进行了6轮调查,每轮有65~79名专家参与,他们就VICCCS修订的轻度和重度VCI的诊断指南达成共识,并肯定了美国国立神经疾病与卒中研究所-加拿大卒中网(National Institute of Neurological Disorders and Stroke–Canadian Stroke Network,NINDS-CSN)发布的神经心理学评估方案和对影像学检查的推荐意见.讨论VICCCS-2建议规范化应用NINDS-CSN推荐的神经心理学和影像学评估方案诊断VCI,以促进研究协作.Olivia A. Skrobot Sandra E. Black Christopher Chen Charles DeCarli Timo Erkinjuntti Gary A. Ford Rajesh N. Kalaria John O'Brien Leonardo Pantoni Florence Pasquier Gustavo C. Roman Anders Wallin Perminder Sachdev Ingmar Skoog the VICCCS group Yoav Ben-Shlomo Anthony P. Passmore Seth Love Patrick G. Kehoe 朱婷珂 徐俊 2018国际脑血管病杂志2018,26,4:58
3Mesenchymal stem cells over-expressing hepatocyte growth factor improve small-for-size liver grafts regeneration显示文摘Yu, Y. Yao, A. H. Chen, N. Pu, L. Y. Fan, Y. Lv, L. Sun, B. C. Li, G. Q. Wang, X. H. 2007南京医科大学学报(自然科学版)2007,27,10:45
4A community-derived classification for extant lycophytes and ferns显示文摘发展史长通知了蕨类植物分类。当我们推断进化的树的能力改善了,针对认出生来的组的分类变得逐渐地预兆、稳定。这里,我们为 lycophytes 和蕨纲植物提供一个现代、全面分类,在下面,利用一条基于社区的途径类水平。我们 monophyly 用作主要标准让 taxa,而且目的识别保存两个广泛地被接受的存在 taxa 和界限并且与我们蕨类植物发展史的理解一致。总共,这个分类对待一在 337 个类, 51 个家庭, 14 目,和二个班估计了 11  916 种类。这个分类没在 lycophyte 和蕨纲植物上作为最后的词被打算分类,而是当前的假设的概括陈述,源于最好的可得到的数据并且在问题由熟悉植物的那些大多数塑造了。我们希望它将在蕨类植物上为最近的文学的那些想要的参考用作一个资源发展史和分类,为指导未来调查的一个框架,和推进讲话的刺激。Eric Schuettpelz Harald Schneider Alan R. Smith Peter Hovenkamp Jefferson Prado Germinal Rouhan Alexandre Salino Michael Sundue Thafs Elias Almeida Barbara Parris Emily B. Sessa Ashley R. Field Andre Luis de Gasper Carl J. Rothfels Michael D. Windham Marcus Lehnert Benjamin Dauphin Atsushi Ebihara Samuli Lehtonen Pedro Bond Schwartsburd Jordan Metzgar Li-Bing Zhang Li-Yaung Kuo Patrick J. Brownsey Masahiro Kato Marcelo Daniel Arana Francine C. Assis Michael S. Barker David S. Barrington Ho-Ming Chang Yi-Han Chang Yi-Shan Chao Cheng-Wei Chen De-Kui Chen Wen-Liang Chiou Vinicius Antonio de Oliveira Dittrich Yi-Fan Duan Jean-Yves Dubuisson Donald R. Farrar Susan Fawcett Jose Maria Gabriel y Galan Luiz Armando de Araujo Goes-Neto Jason R. Grant Amanda L. Grusz Christopher Haufler Warren Hauk Hai He Sabine Hennequin Regina Yoshie Hirai Layne Huiet Michael Kessler Petra Korall Paulo H. Labiak Anders Larsson Blanca Leen Chun-Xiang Li Fay-Wei Li Melanie Link-Perez Hong-Mei Liu Ngan Thi Lu Esteban I. Meza-Torres Xin-Yuan Miao Robbin Moran Claudine Massi Mynssens Nathalie Nagalingum Benjamin Ollgaard Alison M. Paul Jovani B. de S. Pereira Leon R. Perrie Monica Ponce Tom A. Ranker Christian Schulz Wataru Shinohara Alexander Shmakov Erin M. Sigel Filipe Soares de Souza Lana da Silva Sylvestre Weston Testo Luz Amparo Triana-Moreno Chie Tsutsumi Hanna Tuomisto IvAn A. Valdespino Alejandra Vasco Raquel Stauffer Viveros Alan Weakley Ran Wei Stina Weststrand Paul G. Wolf George Yatskievych Xiao-Gang Xu Yue-Hong Yan Liang Zhang Xian-Chun Zhang Xin-Mao Zhou 2016Journal of Systematics and Evolution2016,54,6:44
5OsWRKY62 is a Negative Regulator of Basal and Xa21-Mediated Defense against Xanthomonas orvzae pv. orvzae in Rice显示文摘Ying Peng Laura E. Bartley Xuewei Chen Christopher Dardick Mawsheng Chern Randy Ruan Patrick E. Canlas Pamela C. Ronald 2008Molecular Plant2008,1,3:39
6Variability in rainfall threshold for debris flow after the Chi-Chi earthquake in central Taiwan,China显示文摘The purpose of this study is to analyze variability in rainfall threshold for debris flow(critical rainfall for debris flow triggering) after the ML 7.3 Chi-Chi earthquake in central Taiwan in 1999. Two study sites with different geological conditions were surveyed in the earthquake area. Streambed surveys were conducted to continuously monitor debris flows between 1999 and 2006. During the 7-year study period,every debris flow event was identified,and the streambed characterized. Results show that the rainfall threshold for debris flow was remarkably lower just after the Chi-Chi Earthquake,but gradually recovered. To date,this rainfall threshold is still lower than the original level prior to the earthquake. This variability in rainfall threshold is closely related to the amount of sediment material in the initiation area of debris flow,which increased rapidly due to landslides resulting from the earthquake. With the increase in sediment material,the rainfall threshold was lowered severely during the first year following the Chi-Chi earthquake. However,heavy rainfalls mobilized the sediment material,causing debris flows and transporting sediment downstream. With the decrease in sediment material,the rainfall threshold recovered gradually over time. Furthermore,debris flows occurred only in the subbasins that had sufficient sediment material to cause significant movement. Hence,these results confirm that the sediment material in the initiation area of debris flow is a crucial component of the rainfall threshold for debris flow.C. L. SHIEH Y. S. CHEN Y. J. TSAI J. H. WU 2009International Journal of Sediment Research2009,24,2:35
7Intracellular tat of human immunodeficiency virus type 1 activates lytic cycle replication of Kaposi's sarcoma-associated herpesvirus. Role of JAK/STAT signaling显示文摘Zeng, Y. Zhang, X. H. Huang, Z. Cheng, L. Yao, S. H. Qin, D. Chen, X. Y. Tang, Q. Lv, Z. G. Zhang, L. Lu, C. 2007南京医科大学学报(自然科学版)2007,27,5:31
8Blockade of cholecystokinin-2 receptor and cyclooxygenase-2 synergistically induces cell apoptosis, and inhibits the proliferation of human gastric cancer cells in vitro显示文摘Gastrin and cyclooxygenase-2(COX-2) playimportant roles in the carcinogenesis and progression ofgastric cancer.However,it remains unknown whether the combination of cholecystokinin-2(CCK-2) receptor antagonist plus COX-2 inhibitor exerts synergistic anti-tumor effects on human gastric cancer.Here,we demonstrated that the combination of AG-041R(a CCK-2 receptor antagonist) plus NS-398(a selective COX-2 inhibitor) treatment had synergistic effects on proliferation inhibition,apoptosis induction,down-regulation of Bcl-2 and up-regulation of Bax expression in MKN-45 cells.These results indicate that simultaneous targeting of CCK-2 receptor and COX-2 may inhibit gastric cancer development more effectively than targeting either molecule alone.(C)2008 Elsevier Ireland Ltd.All rights reserved.Sun, W. H. 2008南京医科大学学报(自然科学版)2008,28,9:30
9Rapid quantification of semen hepatitis B virus DNA by real-time polymerase chain reaction显示文摘AIM: To examine the sensitivity and accuracy of real-time polymerase chain reaction (PCR) for the quantification of hepatitis B virus (HBV) DNA in semen.METHODS: Hepatitis B viral DNA was isolated from HBV carriers' semen and sera using phenol extraction method and QTAamp DNA blood mini kit (Qiagen, Germany). HBV DNA was detected by conventional PCR and quantified by TaqMan technology-based real-time PCR (quantitative polymerase chain reaction (qPCR)). The detection threshold was 200 copies of HBV DNA for conventional PCR and 10 copies of HBV DNA for real time PCR per reaction.RESULTS: Both methods of phenol extraction and QIAamp DNA blood mini kit were suitable for isolating HBV DNA from semen. The value of the detection thresholds was 500 copies of HBV DNA per mL in the semen. The viral loads were 7.5×107 and 1.67×107 copies of HBV DNA per mL in two HBV infected patients' sera, while 2.L4×105 and 3.02×105 copies of HBV DNA per mL in the semen.CONCLUSION: Real-time PCR is a more sensitive and accurate method to detect and quantify HBV DNA in the semen.Wei-Ping Qian Yue-Qiu Tan Ying Chen Ying Peng Zhi Li Guang-Xiu Lu Made C. Liu Hsiang-Fu Kung Ming-Ling He Li-Ka Shing 2005World Journal of Gastroenterology2005,11,34:25
10Chemical vapor deposition growth of monolayer MoSe2 nanosheets显示文摘Jonathan C. Shaw Hailong Zhou Yu Chen Nathan O. Weiss Yuan Liu Yu Huang Xiangfeng Duan 2014Nano Research2014,7,4:26
11Input-occupancy-output models of the non-competitive type and their application - an examination of the China-US trade surplus显示文摘本文构建了一种能够反映中国加工贸易特点的非竞争(进口)型投入占用产出模型,提出了一个国家全部出口与分部门、分大类商品的单位出口对国内增加值和就业的拉动效应的计算方法,从数学上证明了出口总值等于出口商品所包含的完全国内增加值与完全进口额之和,并据此编制了2002年中美两国的非竞争(进口)型投入占用产出表,测算和分析了中美两国出口对各自国内增加值和就业的影响。Lawrence J. Lau Xikang Chen Cuihong Yang Leonard K. Cheng K. C. Fung Yun-Wing Sung Kunfu Zhu Jiansuo Pei Zhipeng Tang 2010Social Sciences in China2010,31,1:24
12EFFECT OF CHEMICAL COMPOSITION ON RETAINED AUSTENITE IN TRIP STEEL显示文摘The systematic chemical compositions including common C, Si, Mn, Al, and micro- alloying elements of Ti and Nb were designed for high volume fraction of retained austenite as much as possible. The thermo-cycle experiments were conducted by using Gleeble 2000 thermo-dynamic test machine for finding the appropriate composition. The experimental results showed that chemical composition had a significant effect on retained austenite, and the appropriate compositions were determined for commercial production of TRIP steels.Y. Chen and X. ChenWuhan University of Science and Technology, Wuhan 430081, ChinaQ.F. Wang, G.L. Yuan and. C. Y. LiTechnical Center of Wuhan Iron and Steel Co., Wuhan 430080, ChinaX. Y. Li and Y.X. WangCentral Iron and Steel Research Institute, Beijing 1 2002Acta Metallurgica Sinica(English Letters)2002,15,4:19
13GIS-based risk analysis of debris flow:an application in Sichuan,southwest China显示文摘Debris flow is a serious geologic hazard in China.It is estimated that nationally debris flows cause up to 2 billion RMB(250 million US$) in damages and 300-600 deaths and injuries annually.To mitigate debris flow hazards,it is necessary to map,model,and identify zones of debris flow hazards and vulnerability as to inform the local people about the potential risk with a geographic information system.This research presents a regional scale case study modeling debris flow risk(hazard and vulnerability) in Sichuan Province,Southwestern China.In this area,3,290 debris flows have been identified and the spatial-temporal distribution and activity characteristics of them have been documented.Based on the available meteorological data,a Digital Elevation Model with the rate of 1:250,000 and a regional geological map,the 24-hr rainfall threshold(y) for debris flow occurrence is closely related(significant at 99% confidence level) to the index(x) defined using a geology factor(rock hardness:a) and a topographical factor(channel gradient:d) where y = 21 + 10200 / x,in which x = 2.7 × ea + 1000 × d.The discipline is constructive in developing the rainfall threshold for debris flow activity in remote mountainous areas that lack data.For a given watershed,a four-level debris flow hazard map is developed by comparing the rainfall threshold to the design rainfall intensities with 50-,20-,and 5-year average recurrence intervals,respectively.The degree of debris flow vulnerability is determined by the watershed socio-economic conditions.A four-class debris flow risk map,at the final phase of the research,is generated by combining debris flow hazards and vulnerability.With the debris flow risk assessment,the Sichuan Province is classified into the slight,moderate,severe and very severe regions,which accounts for 36%,19%,20% and 25% of total area respectively.B. F. DI N. S. CHEN P. CUI Z. L. LI Y. P. HE Y. C. GAO 2008International Journal of Sediment Research2008,23,2:19
14Suppression of m6A reader Ythdf2 promotes hematopoietic stem cell expansion显示文摘Zhenrui Li Pengxu Qian Wanqing Shao Hailing Shi Xi C. He Madelaine Gogol Zulin Yu Yongfu Wang Meijie Qi Yunfei Zhu John M. Perry Kai Zhang Fang Tao Kun Zhou Deqing Hu Yingli Han Chongbei Zhao Richard Alexander Hanzhang Xu Shiyuan Chen Allison Peak Kathyrn Hall Michael Peterson Anoja Perera Jeffrey S. Haug Tari Parmely Hua Li Bin Shen Julia Zeitlinger Chuan He Linheng Li 2018Cell Research2018,28,9:18
15Parameters in wind-wave frequency spectra and their bearings on spectrum forms and growth显示文摘The spectrum variance m0, peak frequency ω0 and peakness factor p are expressed in terms of nondimensional fetch and duration by making use of relations which are derived through comparing and analyzing existing empirical formulas for the growth of significant wave height and period. The main features of spectrum growth as specified by these parameters agree with those of the JONS-WAP experiments. For given wind speed and fetch, the high frequency parts beyond the peaks of shallow water spectra almost coincide with that of the corresponding deep water spectrum, whereas the low frequency parts differ appreciably. The method developed in this paper predicts smaller significant wave height as well as smaller wave period for shallow water spectra in contrast to the theoretical result of Kitaigorodskii ef al, in which the peak frequency, and consequently the significant wave period, remains basically unchanged for different water depths. Spectra are further reduced to a form in which only significant waveWen Shengchang (S. C. Wen), Zhang Dacuo Guo Peifang, and Chen Bohai Institute of Physical Oceanography, Ocean University of Qingdao (formerly, Shandong College of Oceanography), Qingdao, China 1989Acta Oceanologica Sinica1989,8,1:15
16SREBP-1 is a novel mediator of TGFβ1 signaling in mesangial cells显示文摘Glomerular 矩阵累积是糖尿病的 nephropathy 的一个特点。最近的研究证明抄写因素 SREBP-1 的 overexpression 导致 glomerulosclerosis。TGF1 是 glomerulosclerosis 的一个关键 profibrotic 调停人,但是 SREBP-1 是否调整它的效果,是未知的。在肾 mesangial 房间并且在 vivo, TGF1 激活 SREBP-1。这要求发信号的 SCAP, S1P,和 PI3K/Akt,但是独立于 Smad3。TGF1 应答的记者 plasmid p3TP 勒克司的激活要求 SREBP-1a,然而并非 SREBP-1c,对邻近一个 Smad 有约束力的元素的一个电子盒子有约束力。SREBP-1a overexpression 独自激活 p3TP 勒克司。Smad3 为 SREBP-1a transcriptional 激活被要求, TGF1 导致在二个抄写因素之间的协会。由 acetyltransferase CBP 的 SREBP-1a K333 acetylation 为 Smad3 协会和 SREBP-1 transcriptional 活动被要求,并且也为 Smad3 transcriptional 活动被要求。因此, Smad3 和 SREBP-1a 激活合作地调整 TGF transcriptional 回答。SREBP-1 抑制为糖尿病的肾疾病提供新奇治疗学的策略。Guang Chen Tony Wang Lalita Uttarwar Richard vanKrieken Renzhong Li Xing Chen Bo Gao Ayesha Ghayur Peter Margetts Joan C. Krepinsky 2014Journal of Molecular Cell Biology2014,8,6:13
17Changes with Age and the Effect of Recombinant Human BMP-2 on Proteoglycan and Collagen Gene Expression in Rabbit Anulus Fibrosus Cells显示文摘以便比较之间的差别年轻、旧内部脊椎的圆盘房间和他们的应答的海角到 recombinant 人骨头形态基因的 protein-2 (rhBMP-2 ) ,圆盘房间从 anulus fibrosus (AF ) 和腰部的磁盘的转变地区被孤立从八旧并且八只小新西兰白兔子。与从小兔子的房间相比,从年老的兔子的房间关于 sulfated-glycosaminoglycan (sGAG ) 对 rhBMP-2 处理少些作出回应合成和 aggrecan 基因表示。但是在骨胶原我和骨胶原 II 基因表情,在之间没有重要差别旧并且幼仔。当比较 sGAG 内容, aggrecan ,和骨胶原 II 基因时在有没有 rhBMP-2 处理的年轻 AF 房间的 rhBMP-2 处理以后的旧 AF 房间的表示,有 rhBMP-2 处理的旧 AF 房间有一个更大的能力综合,以及表示 aggrecan 和骨胶原 II 基因在房间并且到在媒介的版本 sGAG 的 sGAG 界限。在 rhBMP-2 处理以后的旧 AF 房间有一个更大的能力综合,这能被结束 sGAG 和快速的 aggrecan 和骨胶原 II 作为与没有 rhBMP-2 处理的年轻 AF 房间相比。因此, rhBMP-2 能与变老在圆盘房间的 anabolism 的能力颠倒衰落。那么看起来, rhBMP-2 有用作一个代理人的潜力延迟圆盘退化的一个关键部件和圆盘矩阵的损失。Qin-Ming FEI Xiao-Xing JIANG Tong-Yi CHEN Jun LI Hideki MURAKAMI Kai-Jow TSAI William C. HUTTON 2006Acta Biochimica et Biophysica Sinica2006,38,11:11
18Improved form of wind wave frequency spectrum显示文摘The lower frequency part of the theoretical wind wave spectrum proposed by the authors (Wen et al. , 1988a, b,c) has been improved and the form of spectrum is appreciably simplified. In addition to the field data collected in the Bohai Sea region and used in the previous papers, those obtained in the Huanghai Sea, the East China Sea and the South China Sea have been employed so that the improved spectra can be verified on a more extensive observational basis. Computed results agree with the observations well. Further comparisons have been made between the proposed spectra and the JONSWAP spectrum. Though the two types of spectrum are close to each other in form, the former shows, as a whole, better agreement with the observation than the latter. By introducing an improved relation between the peak-ness factor and significant wave steepness, the spectrum contains only significant wave height and period as parameters. For spectra given in this form, the computed peak frequencies coincide approximatelyWen Shengchang (S. C. Wen ), Zhang Dacuo, Guo Peifang, Wang Wei, Chen Bohai and Tai Weitao Institute of Physical Oceanography, Ocean University of Qingdao, China 1989Acta Oceanologica Sinica1989,8,4:10
19IN SITU TEM STUDY ON THE R-PHASE TRANSFORMATION IN TiNi ALLOY显示文摘INSITUTEMSTUDYONTHER-PHASETRANSFORMATIONINTiNiALLOYCHENQing;WUXingfangandC.J.Humphreys(DepartmentofMaterialsPhysics,Universit...CHEN Qing WU Xingfang and C. J. Humphreys(Department of Materials Physics, University of Science and Technology Beijing, Beijing 100083, China)(Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CBZ 3QZ, U. K.) 1996Acta Metallurgica Sinica(English Letters)1996,9,3:10
20Experimental investigation of time-dependent cavitation in an oscillatory squeeze film显示文摘The occurrence of time-dependent cavitation and tensile stress in an oscillatory oil squeeze film were investigated experimentally. The test apparatus was a simple thrust bearing consisting of two parallel circular plates separated by a thin viscous oil film. During the test, one plate was at rest while the other (transparent) oscillated in a direction normal to its surface. This test configuration was chosen to avoid the rotational motion and complicated geometry of a squeeze film journal bearing. The frequency of oscillation was in the range of 5 to 50 Hz and was controlled by an electro-magnetic exciter. The process of cavity formation and its subsequent development was recorded by a high-speed video camera. Concomitant pressure in the oil film was measured both within and without the cavitation region. It was found that both tensile stress and cavities existed in a squeeze film under certain working conditions.CHEN Xiaoyang, SUN Meili, WANG Wen, D. C. SUN, ZHANG Zhiming & WANG XiaojingResearch Institute of Bearings, Shanghai University, Shanghai 200072, China Department of Mechanical Engineering, State University of New York at Binghamton, NY 13902-6000, USA 2004Science China(Physics,Mechanics & Astronomy)2004,47,z1:10
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