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19篇 您的检索式:作者名="DICK Chris"
    题名 作者 年代 出处 被引量
1Colonoscopic yield of colorectal neoplasia in daily clinical practice显示文摘AIM:To assess the prevalence and location of ad-vanced neoplasia in patients undergoing colonoscopy,and to compare the yield per indication.METHODS:In a multicenter colonoscopy survey (n = 18 hospitals) in the Amsterdam area (Northern Holland),data of all colonoscopies performed during a three month period in 2005 were analyzed. The location and the histological features of all colonic neoplasia were recorded. The prevalence and the distribution ofadvanced colorectal neoplasia and differences in yield between indication clusters were evaluated. Advanced neoplasm was defi ned as adenoma > 10 mm in size,with > 25% villous features or with high-grade dyspla-sia or cancer.RESULTS:A total of 4623 eligible patients underwent a total colonoscopy. The prevalence of advanced neo-plasia was 13%,with 281 (6%) adenocarcinomas and 342 (7%) advanced adenomas. Sixty-seven percent and 33% of advanced neoplasia were located in the distal and proximal colon,respectively. Of all patients with right-sided advanced neoplasia (n = 228),51% had a normal distal colon,whereas 27% had a syn-chronous distal adenoma. Ten percent of all colono-scopies were performed in asymptomatic patients,7% of whom had advanced neoplasia. In the respective procedure indication clusters,the prevalence of right-sided advanced neoplasia ranged from 11%-57%. CONCLUSION:One out of every 7-8 colonoscopies yielded an advanced colorectal neoplasm. Colonoscopy is warranted for the evaluation of both symptomatic and asymptomatic patients.Jochim S Terhaar sive Droste Mike E Craanen Rene WM van der Hulst Joep F Bartelsman Dick P Bezemer Kim R Cappendijk Gerrit A Meijer Linde M Morsink Pleun Snel Hans ARE Tuynman Roy LJ van Wanrooy Eric IC Wesdorp Chris JJ Mulder 2009World Journal of Gastroenterology2009,15,9:6
2Digital Receivers and Transmitters Using Polyphase Filter Banks for Wireless Communications显示文摘Fredric J Harris Chris Dick Michael Rice 2003Microwave Theory and Techniques2003,51,4:1
3Reduction in Mortality as a Result of Direct Transport From the Field to a Receiving Center for Primary Percutaneous Coronary Intervention显示文摘Michel R. Le May George A. Wells Derek Y. So Chris A. Glover Michael Froeschl Justin Maloney Richard Dionne Jean-Fran?ois Marquis Edward R. O’Brien Alexander Dick Heather L. Sherrard John Trickett Pierre Poirier Melissa Blondeau Jordan Bernick Marino Labi 2012Journal of the American College of Cardiology2012,,14:1
4Direct digital synthesis-some options for FPGA implementation 显示文摘Dick Chris Harris Fred 1999Proceedings of SPIE1999,,38:1
5Digital receivers and transmitters using polyphase filter banks for wireless communications显示文摘HARRIS Freclrie J DICK Chris RICE Michael 2003IEEE Transactions on Microwave Theory and Techniques2003,51,4:1
6Senior digital receivers and transmitters using polyphase filter banks for wireless communications 显示文摘Fred Harris Chris Dick Michael Rice 2003IEEE Transactions on Microwave Theory and Techniques2003,51,4:1
7High throughput DNA sequence variant detection by conformation sensitive capillary electrophoresis and automated peak comparison显示文摘Helen Davies Ed Dicks Philip Stephens Charles Cox Jon Teague Chris Greenman Graham Bignell Sarah O’Meara Sarah Edkins Adrian Parker Claire Stevens Andrew Menzies Matt Blow Bill Bottomley Mark Dronsfield P. Andrew Futreal Michael R. Stratton Richard Wooste 2005Genomics2005,,3:1
8Should I stay or should I go? Explaining turnover intentions withorga- nizationai identification and job satisfaction 显示文摘Vail Dick R Chris to Stellmaeher J 2004British journal of Management2004,,15:1
9Architectural Study and FPGA Implementation of Digital Predistortion Linearizer for Wideband Power Amplifiers显示文摘Navid Lashkarian Chris Dick Xilinx0,,:1
10Configurable logic for digital communications显示文摘Dick Chris Harris Fred 1999Systemsand Computer1999,,1:1
11Reduction in Mortality as a Result of Direct Transport From the Field to a Receiving Center for Primary Percutaneous Coronary Intervention显示文摘Michel R. Le May George A. Wells Derek Y. So Chris A. Glover Michael Froeschl Justin Maloney Richard Dionne Jean-Fran?ois Marquis Edward R. O’Brien Alexander Dick Heather L. Sherrard John Trickett Pierre Poirier Melissa Blondeau Jordan Bernick Marino Labi 2012Journal of the American College of Cardiology2012,,14:1
12利用FPGA实现3GPP Turbo编码译码器显示文摘Turbo卷积码(TCC)是3G无线系统中所采用的前向错误校正(FEC)机制的整体部分。然而,Turbo译码器所带来的计算负担非常重,并不太适合采用传统DSP或RISC处理器实现。由于现场可编程逻辑阵列(FPGA)内在的并行结构,FPGA为解决3G基站收发器中所需要的符号速率FEC和其它计算密集的任务提供了一个高性能信号处理平台基础。Chris Dick Johannes Steensma 2002世界电子元器件2002,,9:1
13VLES Modelling with the Renormalization Group显示文摘In a Very-Large-Eddy Simulation (VLES), the filterwidth-wavenumber can be outside the inertial range, and simple subgrid models have to be replaced by more complicated (''RANS-like'') models which can describe the transport of the biggest eddies. One could approach this by using a RANS model in these regions, and modify the lengthscale in the model for the LES-regions. The problem with these approaches is that these models are specifically calibrated for RANS computations, and therefore not suitable to describe inertial range quantities. We investigated the construction of subgfid viscosity and transport equations without any calibrated constants, but these are calculated directly form the Navier-Stokes equation by means of a Renormalization Group (RG) procedure. This leads to filterwidth dependent transport equations and effective viscosity with the right limiting behaviour (DNS and RANS limits).Chris De Langhe rug.ac.be Bart Merci rug.ac.be Koen Lodefier rug.ac.be Erik Dick rug.ac.be 2003Journal of Thermal Science2003,12,4:0
14对平交道口脱轨风险的认识显示文摘平交道口作为一个长期危险源,始终存在着火车和公路交通工具或行人间发生碰撞的风险。大多数的事故中,公路使用者受到的影响最大,但在全球列车受损或脱轨事故中,由于潜在的严重后果而造成持续性的损失。在美国,得益于关闭道口、投资于预警系统的改善以及举办公益组织活动和每年由国际铁路联合会举办的国际平交道口认知日这样的公众教育计划,在过去的几十年中,火车和汽车相撞发生的道口事故数和伤亡数呈稳定下降趋势。Samantha Chadwick Raplk Saat Tyler Dick Chris Barkan 刘小妍 2014郑铁科技2014,0,5:0
15在FPGA中实施4G无线球形检测器显示文摘WiMAX对宽带互联网接入如同手机对语音通信一样意义非凡。它可以取代DSL和有线服务,随时随地提供互联网接入。只需要打开计算机,连接到最近的WiMAX天线,就可以畅游全世界的网络了。Milos Trajkovic Slobodan Denic Dragan Vuletic Chris Dick Raghu Rao Kiarash Amiri 2010世界电子元器件2010,,4:0
16Comparison of modified injection molding and conventional machining in biodegradable behavior of perforated cannulated magnesium hip stents显示文摘In this study,perforated cannulated magnesium(Mg)hip stents were fabricated via modified Mg injection molding and conventional machining,respectively.Additionally,the stent canal was filled with paraffin to simulate injection of biomaterials.The microstructure,mechanical performance,corrosion behavior,and biocompatibility were comparably studied.Scanning electron microscopy(SEM)and energy dispersive spectroscopy(EDS)showed higher affinity of interstitial element such as oxygen and carbon as consequences of routine molding process.After immersion in SBF,machining stents showed reduced degradation rate and increased deposition of calcium phosphate compared to molding stents.Corrosion resistance was improved via paraffin-filling.Consistently,the hemolysis and in vitro osteoblast cell culture models showed favourable biocompatibility in machining stents compared to molding ones,which was improved by paraffin-filling treatment as well.These results implied that the feasibility of the prepared machining stents as the potential in vivo orthopaedic application where slower degradation is required,which could be enhanced by designing canal-filling injection of biomaterials as well.Haiyue Zu Kelvin Chau Temitope Olumide Olugbade Lulu Pan Chris Halling Dreyer Dick Ho-Kiu Chow Le Huang Lizhen Zheng Wenxue Tong Xu Li Ziyi Chen Xuan He Ri Zhang Jie Mi Ye Li Bingyang Dai Jiali Wang Jiankun Xu Kevin Liu Jian Lu Ling Qin 2021Journal of Materials Science & Technology2021,,4:0
17Transition Modelling with the k-Ω Turbulence Model and an Intermittency Transport Equation显示文摘In gas turbine engines, laminar-turbulent transition occurs. However, generally, the turbulence models to describe such transition results in too early and too short transition. Combining a turbulence model with a description of intermittency, i.e. the fraction of time the flow is turbulent during the transition phase, can improve it. By letting grow the intermittency from zero to unity, start and evolution of transition can be imposed. In this paper, a method where a dynamic equation of intermittency combining with a two-equation k-ωturbulence model is described. This intermittency factor is a premultiplicator of the turbulent viscosity computed by the turbulence model. Following a suggestion by Menter et al.[1], the start of transition is computed based on local variables.Koen LODEFIER Bart MERCI Chris De LANGHE Erik DICK 2004Journal of Thermal Science2004,13,3:0
18Application of a k-ε Model to Heat Transfer in Impinging Flows显示文摘Local heat transfer is predicted in turbulent axisymmetric jets, impinging onto a flat plate. A non-linear k-e model is used, in which both the constitutive law for the turbulent stresses and the transport equation for the turbulent dissipation rate e have an important contribution in the improved heat transfer predictions. The shape of the Nusselt number profiles, expressing dimensionless heat transfer, as well as the stagnation point value, are well predicted for different distances between the nozzle exit and the plate. Accurate flow field predictions are the basis for good heat transfer predictions. For a fixed Reynolds number, the influence of the nozzle-plate distance is well captured. For a fixed distance, the influence of the Reynolds number is correctly reproduced. Comparisons are made to a low-Reynolds standard k-e model and the v2-f model. A thorough discussion is found in [4]. Only a summary of those results is discussed here, while some new results are also presented.Bart Merci Chris De Langhe Koen Lodefier Erik Dick 2004Journal of Thermal Science2004,13,1:0
19可编程器件助力实现智能无线网络显示文摘无线电信运营商正急需各种办法来利用呈爆炸性增长需求的移动因特网。但是仅靠简单部署更多、速度更快的设备还不行,电信运营商必须通过更加智能的途径来充分利用网络。他们正积极开发自组织网络等新型架构,以便为客户提供出色的优质服务,并最大限度地提高赢利能力。Chris Dick 2014今日电子2014,,1:0
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