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| 1 | A CaS:Ce,Sm-based dosimeter for online dosimetry measurement显示文摘A film dosimeter based on optically stimulated luminescence (OSL) material of CaS:Ce,Sm was developed for online irradiation dosimetry measurement.The stimulation is provided by a laser with a wavelength of 980 nm,and the OSL luminescenceis collected by a photodiode.Using 60Co γ-rays,we investigated the dosimetry characteristic of the dosimeter at different dose rates and total doses.The real-time detection results showed that the OSL signals versus total ionizing dose exhibited a good linearity in a dose range of 0.1-185 Gy. | SUN Yurun CHEN Zhaoyang FAN Yanwei YAN Shiyou HE Chengfa | 2011 | Nuclear Science and Techniques2011，22，2： | 3 |
| 2 | Flow-restricted Etching Method on Isotropic Substrates and Its Mechanism显示文摘With the development of analytical instrumentation to minimization,integration and automation,the microfluidic chips,which are more integrated,complex and diversified,have been applied widely on the manufacturing of analytical instrumentation.However,the present photolithography-based microfabrication technology,which is only able to pattern microchannels with simple inside structures,can not follow the rapid development of requirements.For solving the problem,a fabrication method based on the restricting effect of laminar flow is proposed for the micro etching on isotropic substrates.Experiments were conducted inside glass-based microchannels,in which certain etchant was used to form complicated microstructures.The flow parameters' effects on the aspect ratio,side wall profile and etching rate were revealed by the experiments.The experimental results reveal that the topography of micro structures patterned with the restricted flow etching method is mainly determined by the flowrates of separator and etchant.The computational fluid dynamics(CFD) model on the interface between multiple streams was established for the etching process,and analysis on the causes of various micro topographies was conducted based on the CFD simulation results.The experimental data consisted with the simulation results very well.The investigation depicted in this paper indicate that the flow restricted etching method provides sufficient references for the research and understanding on the mass transport at the liquid-liquid surface in the microchannel and can be used to pattern complex micro structures with high aspect ratios,meantime,it greatly enriches the microfabrication technology for microfluidic chips. | XIE Haibo ZHENG Yi FAN Yurun FU Xin YANG Huayong | 2010 | Chinese Journal of Mechanical Engineering2010，23，5： | 1 |
| 3 | High-order finite element methods for steady viscoelastic flows 显示文摘 | Fan Yurun Crochet M J | 1995 | Non-Newton Fluid Mech1995，57，3： | 1 |
| 4 | Effect of Groove on the Behavior of Flow Between Hydro-viscous Drive Plates显示文摘 | Huang Jiahai Fan Yurun Qiu Minxiu | 2012 | Jour- nal of Central South University of Technology2012，19，： | 1 |
| 5 | Stress boundary layers in the viscoelastic flow past a cylinder in a channel:limiting solutions显示文摘The flow past a cylinder in a channel with the aspect ratio of 2: 1 for the upper convected Maxwell (UCM) fluid and the Oldroyd-B fluid with the viscosity ratio of 0.59is studied by using the Galerkin/Least-square finite element method and a p-adaptive refinement algorithm. A posteriori error estimation indicates that the stress-gradient error dominates the total error. As the Deborah number, De, approaches 0.8 for the UCM fluid and 0.9 for the Oldroyd-B fluid, strong stress boundary layers near the rear stagnation point are forming, which are characterized by jumps of the stress-profiles on the cylinder wall and plane of symmetry, huge stress gradients and rapid decay of the gradients across narrow thicknesses. The origin of the huge stress-gradients can be traced to the purely elongational flow behind the rear stagnation point, where the position at which the elongation rate is of 1/2De approaches the rear stagnation point as the Deborah number approaches the critical values. These observations imply that the cylinder problem for the UCM and Oldroyd-B fluids may have physical limiting Deborah numbers of 0.8 and 0.9, respectively. | Yurun Fan Huayong Yang Roger I. Tanner | 2005 | Acta Mechanica Sinica2005，21，4： | 1 |
| 6 | Time-dependent viscoelastic behavior of an LDPE melt显示文摘二个微分组成的方程,即 Giesekus 模型和 Johnson Segalman 模型这里被雇用预言时间依赖者 LDPE 的粘弹性的行为融化在 thixotropy 环实验和步砍率实验。多重松驰模式被采用,并且过去常在二个模型描述非线性的粘弹性的参数被适合砍变瘦粘性获得。那些上的预言短暂砍由二个模型的特征在对我们的以前的实验的质的同意被发现。Johnson Segalman 模型在 thixotropy 环和步预言摆动行为砍评估实验,而 Giesekus 模型不做。两个模型更高预言砍在砍的长时间的情况中比试验性的数据强调,暗示两个模型不能完全描绘时间依赖者砍 melt 在的应力高砍率。 | Shuxin Huang Chuanjing Lu Yurun Fan | 2006 | Acta Mechanica Sinica2006，22，3： | 1 |
| 7 | Rheological scaling and modeling of shear-enhanced crystallization rate of polypropylene显示文摘 | Qing Chen Yurun Fan Qiang Zheng | 2006 | Rheologica Acta2006，，2： | 1 |
| 8 | High-order finite element methods for steady viscoelasticflows显示文摘 | Fan yurun Crochet M J | 1995 | Non-Newton fluid mech1995，57，3： | 1 |
| 9 | A new semi-empirical spectrum model for complex steady shear viscosity of complex fluids显示文摘A semi-empirical spectrum model is proposed todescribe the experimental data of the steady shear propertiesof a Shengli waxy crude oil near its gel point, where sophisticatedstructural effects become apparent due to the existenceof waxy crystals in the crude oil. The model, consisting of atime spectrum, can well fit the steady shear viscosities of thewaxy crude oil over the whole experimental shear rate regionfrom 10^-4 to 10~2 s^-1.Two other experiments on complex fluidsreported recently in the literature are also well describedby this model demonstrating the applicability and accuracyof the model. | Shuxin Huang Chuanjing Lu Yurun Fan | 2009 | Acta Mechanica Sinica2009，25，6： | 0 |
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