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1892篇 您的检索式:作者名="WEN D"
    题名 作者 年代 出处 被引量
1Ⅰ期癌症患者切除淋巴结内隐匿性微小转移癌灶的检查及其临床病理意义显示文摘目的 检查癌症患者切除淋巴结内有无微小癌转移 ,具有临床、病理重要性。方法 350例 期癌症患者包括非小细胞肺癌 94例 ,乳腺癌 112例 ,食管癌 115例及外阴癌 2 9例病理报告无癌转移的淋巴结 3715枚。应用单克隆抗细胞角蛋白 ( AE1/ AE3)、抗上皮细胞膜 ( EMA) ,及多克隆抗角蛋白抗体进行免疫组化染色重新检查。结果 所有病例的 32 .3% ( 113/ 350 )、被检淋巴结的 5.5%( 2 0 3/ 3715)有淋巴结内隐匿性肿瘤转移。肺癌患者及被检淋巴结的阳性率均比其他肿瘤高。肺鳞癌58%、腺癌 53.8%的淋巴结为阳性 ,分别比食管鳞癌 2 2 .5%、外阴鳞癌 10 .3%及乳腺癌 2 7.7%高 ( P<0 .0 5)。部分乳腺癌患者术后随访显示 :淋巴结阳性患者比阴性者预后更差 ( P<0 .0 5)。结论 说明免疫组化技术可大大提高淋巴结微小癌转移的检出率 ,其阳性率的不同可能与患者的临床经过甚至癌患者的死亡率相关联。陈朝伦 卢晓梅 黄绒 黎音 古丽娜尔 沈宝茵 A J Cochran D R Wen W F Coulson 1997中华肿瘤杂志1997,19,1:16
2Design and simulation of self-powered radio frequency identification (RFID) tags for mobile temperature monitoring显示文摘This paper presents a design for a self-powered radio frequency identification (RFID) tag with a thin film bulk acoustic reso- nating piezoelectric power supply (PPS), which can be used for portable remote temperature monitoring. We call this system a PPS-RFID for short. The RFID systems have been found to have many applications in the internet of things (IOT) in the past decade. But semi-active RFID tags require an onboard battery which limits their applications in many fields. For these reasons, our research focuses on power sources for the RFID tags. This paper emphasizes the circuit design and simulation of PPS. In our tests, 0.283 mW was generated by PPS at 1 Hz vibration by a 650 N impact force. The results showed that the integrated PPS could supply sufficient power for the designed PPS-RFID tag. The PPS-RFID tag can be widely used for temperature monitoring during mobile transport of perishable items such as medicines or food.CHU HeQun WU GuangMin CHEN JianMing FEI Fei MAI John D LI Wen J 2013Science China(Technological Sciences)2013,56,1:6
3Agent-oriented Aid-modeling for the Distributed Activity NetworkDENG Gui\|shi\+1,\ LI Wen\|lei\+1,\ O. Moeschlin\+2 1.Institute of Systems Engineering, Dalian University of Technology Dalian 116024, China 2.Department of Mathematics, Fern University in Hagen, D 58084 Germany 2000Systems Science and Systems Engineering2000,10,1:4
4The survivin: fasratio in pediatric renal tumors显示文摘Takamizawa S Scott D Wen J 0,,:2
5Progresses on SAR Remote Sensing of Tropical Forests:Forest Biomass Retrieval and Analysis of Changing Weather Conditions显示文摘This paper is intended to report on the progresses made during the Dragon-4 project Three and Four-Dimensional Topographic Measurement and Validation(ID:32278),sub-project Multi-baseline SAR Processing for 3 D/4 D Reconstruction(ID:322782).The work here reported focuses on two important aspects of SAR remote sensing of tropical forests,namely the retrieval of forest biomass and the assessment of effects due to changing weather conditions.Recent studies have shown that by using SAR tomography the backscattered power at 30 m layer above the ground is linearly correlated to the forest Above Ground Biomass(AGB).However,the two parameters that determine this linear relationship might vary for different tropical forest sites.For purpose of solving this problem,we investigate the possibility of using Li DAR derived AGB to help training the two parameters.Experimental results obtained by processing data from the Tropi SAR campaign support the feasibility of the proposed concept.This analysis is complemented by an assessment of the impact of changing weather conditions on tomographic imaging,for which we simulate BIOMASS repeat pass tomography using ground-based Tropi SCAT data with a revisit time of 3 days and rainy days included.The resulting backscattered power variation at 30 m is within 1.5 d B.For this forest site,this error is translated into an AGB error of about 50~80 t/hm^(2),which is 20%or less of forest AGB.Stefano TEBALDINI Xinwei YANG Yu BAI Mauro Mariotti D’ALESSANDRO Mingsheng LIAO Wen YANG 2021Journal of Geodesy and Geoinformation Science2021,4,1:2
6Characterization of spermidine hydroxycinnamoyl transferases from eggplant (Solanum melongena L.) and its wild relative Solanum richardii Dunal显示文摘Eggplant produces a variety of hydroxycinnamic acid amides(HCAAs)that have an important role in plant development and adaptation to environmental changes.In this study,we identified and characterized a spermidine hydroxycinnamoyl transferase(SHT)from eggplant(Solanum melongena)and its wild relative S.richardii,designated as SmSHT and SrSHT,respectively.SmSHT was abundant in flowers and fruits,whereas the level of SrSHT was remarkably low in all tissues.Heat-shock/drought treatment stimulated the expression of SmSHT in both leaves and fruits,indicating its involvement in plant stress response.Both SHT polypeptides had extremely high identity with just five amino-acid substitutions.Recombinant SmSHT catalyzed the synthesis of mono-,bi-and tri-acylated polyamines.Using caffeoyl-CoA as the acyl donor,SmSHT preferred spermidine as the acyl acceptor.When spermidine was the acyl acceptor,the donor preference order for SmSHT was caffeoyl-CoA>feruloyl-CoA>ρ-coumaroyl-CoA.SrSHT exhibited the same substrate specificity as SmSHT,yet exhibited significantly higher catalytic activity than SmSHT.For example,under caffeoyl-CoA and spermidine,Kcat of SrSHT was 37.3%higher than SmSHT.Molecular modeling suggests that five amino-acid substitutions in SrSHT result in four alterations in their predicted 3D structures.In particular,the conserved Lys402 adjacent to the DFGWG motif,and Cys200 in the crossover loop in SmSHT were replaced by Glu and Ser in SrSHT.These substitutions may contribute to the enhanced activity in SrSHT.Our study provides a platform to generate HCAA rich fruits for eggplant and other solanaceous crops.Hui Peng Tianbao Yang Bruce D Whitaker Frances Trouth Lingfei Shangguan Wen Dong Wayne M Jurick 2016Horticulture Research2016,3,1:2
7The generation of endostatin is mediated by elastase显示文摘Wen W Moses MA Wiederschain D 1999Cancer Res1999,59,24:1
8Medical management of patients with brain tumors 显示文摘Wen PY Schiff D Kesari S 2006J Neurooncol2006,80,3:1
9Research on sodium sulfur battery for energy storage显示文摘WEN Z Y CAO J D GU Z H 2008Solid State Ionics2008,179,2732:1
10Feasibility study and control values of transient elastography in healthy chil- dren 显示文摘Engelmann G Gebhardt C Wenning D 2012Eur J Pediatr2012,171,2:1
11Improved model for mercury emission, transport and deposition显示文摘Gbor P K Wen D Y Meng F 2006Atmospheric Environment2006,40,5:1
12Material research for planar SOFC stack显示文摘T.-L Wen D Wang M Chen H Tu Z Lu Z Zhang H Nie W Huang 2002Solid State Ionics2002,,3:1
13Some patient-related factors associated with late access to ART in China's free ART program显示文摘Wen Y Zhao D Dou Z 2011AIDS Care2011,23,10:1
14A novel approach for lignin modification and degradation 显示文摘TIAN Min WEN Jiali DUNCAN M D 2010Electrochemistry Communications2010,12,:1
15Biological control of wheat root diseases by the CLP-producing strain Pseudomonas fluorescens HC1-07 显示文摘Yang M M Wen S S Mavrodi D V 2014Phytopathology2014,104,3:1
16Secure arithmetic coding 显示文摘KIM H WEN Jiangtao VILLASENOR J D IEEE Transactions on Signal Processing0,5,5:1
17Fiber guiding at the Dirac frequency beyond photonic bandgaps显示文摘Light trapping within waveguides is a key practice of modern optics,both scientifically and technologically.Photonic crystal fibers traditionally rely on total internal reflection(index-guiding fibers)or a photonic bandgap(photonic-bandgap fibers)to achieve field confinement.Here,we report the discovery of a new light trapping within fibers by the so-called Dirac point of photonic band structures.Our analysis reveals that the Dirac point can establish suppression of radiation losses and consequently a novel guided mode for propagation in photonic crystal fibers.What is known as the Dirac point is a conical singularity of a photonic band structure where wave motion obeys the famous Dirac equation.We find the unexpected phenomenon of wave localization at this point beyond photonic bandgaps.This guiding relies on the Dirac point rather than total internal reflection or photonic bandgaps,thus providing a sort of advancement in conceptual understanding over the traditional fiber guiding.The result presented here demonstrates the discovery of a new type of photonic crystal fibers,with unique characteristics that could lead to new applications in fiber sensors and lasers.The Dirac equation is a special symbol of relativistic quantum mechanics.Because of the similarity between band structures of a solid and a photonic crystal,the discovery of the Dirac-point-induced wave trapping in photonic crystals could provide novel insights into many relativistic quantum effects of the transport phenomena of photons,phonons,and electrons.Kang Xie Wei Zhang Allan D Boardman Haiming Jiang Zhijia Hu Yong Liu Ming Xie Qiuping Mao Lei Hu Qian Li Tianyu Yang Fei Wen Erlei Wang 2015Light(Science & Applications)2015,4,1:1
18Carbon fiber-reinforced cement as a strain-sensing coating显示文摘Sihai Wen Chung D D L 2001Cement and Concrete Research2001,31,:1
19Three-dimensional optimal deployment of a tethered subsatellite with an elastic tether显示文摘Wen H Jin D P Hu H Y 2008International Journal of Computer Mathematics2008,85,6:1
20Tip in Situ Chemical Modification and its Effects on Tribological Measurements 显示文摘Qian L M Xiao X D Wen S Z 2000Langmuir2000,16,:1
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