动力学

Keywords Nanocrystalline;Analytic embedded-atom method;Molecular dynamics;Microstructure;Grain boundary;Mechanical properties

Article From 湖南大学；材料物理与化学硕士论文 2004年度纳米晶体；分析型嵌入原子方法；分子动力学；微观结构；晶界；力学性能

The analytic studies of the MITA procedure based on dynamics and the function of thermo-diffuse and thermo-conduction combine these three physic field systematically. Compared with situation function with thermo-balance method, the analytic studies based on dynamics have less parameters approximation, and more precision. Meanwhile, the discipline of the microwave energy absorbed by tissue is should studied also.

基于动力学和热扩散、传导方程的微波热致超声波机制解析解的分析，将上述三类物理场有机地结合在了一起，与基于热平衡的状态解析分析相比，这一方法更少地对三物理场所涉及的参数进行近似，能更准确地反映微波热致超声波机制。

The types of Subei basin, the structural features of main abundant hydrocarbons depressions, the features and genetic mechanisms of structural trap assemblages and the characters of oil-gas distribution are chiefly studied in this work with applying comparative structural geology, analytic structural geology and Earth dynamics, the control of the structure on oil-gas is generalized, and then the exploration targets were found based on these analysis.

综合运用比较构造学、解析构造学和地球动力学等方法，重点研究了苏北盆地成因类型、主要富烃凹陷构造特征、构造圈闭组合特征和成因、油气分布特征，总结了构造对油气分布的控制作用，在此基础上寻找有利的勘探方向。

Many large highspeed and long runout landslides could fly in the air at the short-range stage. It is necessary to consider the areodynamics effect and ground effect at the short-range stage of landslide where it starts to fly. However, it is difficult to solve the differential equation with analytical solutions.

许多大型高速远程滑坡在近程活动阶段呈现凌空飞行运动，其飞行过程必须考虑空气动力学效应和地面效应，但是直接求解高速滑体凌空飞行运动的偏微分方程是困难的。

In chapter three, the dynamics of a driven spin-boson model is studied by means of the perturbation approach based on an unitary transformation. Analytical expressions for the population difference and the coherence of the two state system are obtained.

在第三章中，采用基于幺正变换的微扰方法，我们研究了驱动spin-boson模型的动力学，得到了在微波驱动下二能级系统的粒子数反转和相干性的解析表达式。

Objective To evaluate the relationship between locations of tethered cord and types of neurogenic bladder,meanwhile,the prognostic significance of Urodynamic analyzation for neurogenic bladder is investigated.

目的探讨脊髓栓系位置与神经原性膀胱类型的关系及尿动力学检查对神经原性膀胱的诊断价值。

Spectral entropy is a new electroencephalogram-derivedparameter that may be used to model the pharmacokinetic-pharmacodynamic effects of general anesthetics.

熵指数是一种从脑电图衍生出来的新参数，可以用于建立全身麻醉药的药代动力学－药效学模型。

BACKGROUND: Age is an important determinant of the pharmacokineticprofile of inhaled anesthetics.

背景：年龄是吸入麻醉药的药物代谢动力学的一个重要的因素。

METHODS:the anatomic configurations and hemodynamics of 38 cases on cine-MRI were analysed,including ascending aortic aneurism(10 cases),aortic dissection(21 cases),pericardial hematoma(1 case),hypertrophic cardiomyopathy(3 cases),ASD(1 case),combined ASD and VSD(1 case).

分析 38例心血管疾病的 cine-MRI解剖结构和血流动力学改变，其中升主动脉瘤 10例，夹层动脉瘤 2 1例，心包血肿 1例，肥厚型心肌病 3例，房间隔缺损 2例，ASD并发室间隔缺损 1例。

The angle of attack changes the aerodynamic balance of a wing.

攻角会改变一个伞翼的空气动力学平衡。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。