分析动力学

PartⅢDiagnostic strategy of Breast Lesion using combination of dynamic contrast-enhanced and diffusion-weighted imagingPurpose:To evaluate the diagnostic accuracy of a combination of dynamic contrast-enhanced MR imaging and diffusion-weighted MR imaging in characterization of breast lesion and to find the strongest discriminators between malignancy and benignancy.Materials and Methods:223 patients with 236 pathology-confirmed breast lesions were examined using EPI-DWI,FSE-T2WI,SE-T1WI,DCE-MR imaging were performed using VIBRANT sequence.

第三部分磁共振动态增强扫描结合扩散加权成像诊断乳腺癌的策略研究目的：分析乳腺良、恶性病变的形态学表现、血流动力学表现，结合ADC值，采用单变量和多变量分析，挖掘有意义的恶性MR征象，制定乳腺癌的诊断策略，探讨动态增强MR(dynamic contrast-enhanced MR imaging，DCE-MRI)结合DWI对乳腺病变的诊断和鉴别诊断价值。

MR images was analyzed include tumor shape,margin, internal enhancement characteristics,distribution,and time-signal intensity curves,maximam enhancement ratio,early enhancement ratio and so on.The ADCs of lesions were calculated on ADC maps.Univariate and multivariate analysis of MR imaging data were performed to find the strongest discriminators and the Logestic regression model was established to predict the probabilities for malignancy.

由放射科医生采用双盲法阅片，根据乳腺MR影像报告及数据系统(BI-RADS MRI)，将病变按照不同形态学表现分为肿块和非肿块性病变两组，分析形态学表现(形状、边缘、分布特征、内部增强特征)、血流动力学表现(时间-信号强度曲线类型、最大增强率、达峰时间、早期增强率)，并结合ADC值，应用SPSS15.0软件进行单变量及多变量分析，挖掘有意义恶性征象，建立回归模型，计算其敏感性、特异性、准确性、阳性预测值和阴性预测值。

Through combining the three moisture movements of leachate seepage in drainage layer, leackage through liner and pipe flow in perforated drainpipes, a leachate hydrological mechanics model is established. This thesis analyses related parameters of LCS according to model results and offers a practical calculation method for landfill LCS design.

在考虑渗滤液在排水层中的渗流，渗滤液通过防渗衬垫的渗漏以及渗滤液在穿孔排水管中的管道流的基础上，建立了渗滤液水动力学模型，根据模型分析结果对渗滤液收集系统相关参数进行了分析，提出了适宜于填埋场渗滤液收集系统设计的计算方法。

Taking Jiyang Depression as the study object, many kinds of disciplines were applied synthetically in this thesis, such as, stratigraphy, structural geology, sedimentology, historical geology, geophysics, etc. On the basis of the reconstruction of the denuded thickness and the original thickness, and the study of the developing characteristics of the basin-controlled faults, combined with the study of space-time distribution of the sedimentary facies and the analysis of basin - transfer mechanism and the geodynamics, the prototype basins of each structural stage in Mesozoic were studied and analyzed in detail, moreover, the superimposed relationship of the Mesozoic basin and Cenozoic basin was discussed.

本论文选择济阳坳陷作为研究对象，开展地层学、构造地质学、沉积学、地史学以及地球物理学等多学科综合研究，以地层剥蚀厚度、原始厚度的恢复以及控盆断层发育演化特征的研究为切入点，辅以沉积相的时空展布研究，并结合盆地转型机制、地球动力学背景分析，对济阳坳陷中生代各构造期的盆地原型进行详细解剖和分析，探讨其与新生代盆地的叠合关系。

Catalytic reaction mechanism of NO on the surface of Cu-ZSM-5 is analyzed and the Arrhenius equation of the reaction is deduced.

分析了多种因素对催化剂催化效率的影响，对NO在Cu-ZSM-5表面的催化反应机理和反应动力学方程进行了分析推导。

The virtual prototype platform was founded with the software of Solidworks and ADAMS, and the multi-bodies dynamics simulating model of an assault rifle automatic mechanism was set up by it, and the numerical simulation analysis as carried out.

将Solidworks和ADAMS软件联合构建一个虚拟样机平台，建立了某突击步枪自动机多体动力学仿真模型，进行了数值仿真分析，仿真分析的结果与实验结果相比吻合很好，表明了该平台的正确性。

This study focused on the absorption of vapor into aqueous LiBr and the absorption of ammonia gas into aqueous ammonia.

本项目以溴化锂溶液和氨水溶液作为研究重点，主要内容包括：对添加剂作用下的溴化锂溶液和氨水溶液表面张力进行了实验研究，发现添加剂对两种溶液表面张力的影响呈现出不同的性质；利用表面吸附动力学原理，对溶液的表面张力及动态表面张力进行了理论分析；利用激光阴影法对溴化锂溶液静池吸收过程中马拉戈尼对流的形成进行了可视化研究，并进而发现蒸汽添加剂比液体添加剂对吸收具有更好的强化效果；利用实验方法对溴化锂溶液垂直降膜吸收进行了研究，并从其基本方程出发得出了影响添加剂强化效果的主要因素；同时，也对添加剂对氨水鼓泡吸收的影响进行了实验研究；最后，对添加剂的强化机理进行了分析，即对于溴化锂溶液来说，添加剂对溶液吸收的影响主要体现在对吸收界面吸附特性的影响上，无论是气体添加剂还是液体添加剂，都有可能对溴化锂溶液吸收起到强化作用；对于氨水溶液而言，添加剂的影响主要还是体现在&盐析&作用上，当氨水浓度较低时，添加剂有可能对吸收起到强化作用。

The two methods were respectively used to make dynamic analysis for air compartment of a certain three-tube Gatling gun with inner energy sources, while ensured the changing rule of pressure in airway equipment while weapons are firing, then analyzed the key structure elements which cause the change of the pressure, thus provide a theoretic basis for parameter design of gas operated Gatling gun with inner energy sources.

分别运用2种方法，通过对某内能源三管转管机枪的导气装置进行动力学分析，确定武器在使用过程中导气室内的压力变化规律并分析影响其压力变化的主要结构因素，为内能源转管机枪的参数设计提供理论依据。

A model of coupling piston dynamic behavior to Cylinder-Piston-System lubrication is presented and its numerical simulation is performed in two conditions of fluid lubrication and mixed lubrication of rough surfaces through OCAM.

2建立了缸套-活塞润滑与活塞动力学行为的耦合分析模型，用顺序耦合法进行了完全流体动力润滑和考虑微凸体接触两种情况下的耦合数值仿真分析。

DSC thermo-analysis showed that both of epoxy resins and blended resins had an exothermic peak during the period of thermal-scanning due to the curing reaction. Comparison between different kinds of liquefied wood, blending resins that using the liquefied Japanese cedar of LW-C as the raw material would undergo more degree of cross-linking reaction. They released more reaction heat, and formed a more complete cross-linking structure. However, heat treatment could promote an advanced cross-linking reaction of room temperature cured resins. DSC isothermosetting analyses showed that the curing reaction of both epoxy resins and blended resins conformed to Arrhenius kinetic model. The time needed to achieve 95% of curing reaction was shorter for blending resin than that of epoxy resin.

由DSC热分析显示环氧树脂与掺合树脂在热扫描过程中均出现硬化反应放热峰，其中以液化柳杉LW-C为原料之掺合树脂在硬化过程可进行较多之架桥反应，其反应放热量较大，硬化树脂之架桥结构较完整，而加热可促进常温硬化树脂进一步之架桥反应；由DSC等温硬化性分析显示环氧树脂与掺合树脂之硬化反应均符合Arrhenius动力学模式，添加液化柳杉之掺合树脂达95%硬化率所需时间较环氧树脂短。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失