扩散

The assumption of unity Lewis number in the flamelet model of turbulent combustion is examined and the influence of differential diffusion and radiation on the flamelet structure, nitric oxide emission and extinction limit is investigated.

对拉伸层流扩散火焰面进行了数值模拟，考察了在以往湍流燃烧的火焰面模型中，假定Lewis数等于1的可靠性，研究了不同分子扩散和火焰辐射对火焰面结构、氮氧化物排放和熄火临界的影响。

Base on the turbulent shoot non-premixed combustion of methane/air, make a coordinate transform on flame for reactive scalar equation, build laminar flamelet model for two dimension steady state non-premixed turbulent reacting flows.

以甲烷／空气的湍流射流扩散燃烧为基础，对通用的反应标量方程在火焰面上进行坐标变换，建立二维稳态湍流扩散火焰的小火焰模型。

The application of flamelet model based on level set in premixed turbulence combustion;2. A methane turbulent non-premixed flame has been simulated numerically by the combination of laminar flamelet model and presumed probability density function.

将小火焰模型和假定的PDF方法相结合，模拟甲烷湍流射流扩散火焰，稳态火焰面结构由层流小火焰数据库得到，采用详细化学反应机理描述甲烷的氧化和NO以及碳烟的生成，数值模拟结果和实验数据吻合较好，说明小火焰模型可以较准确地计算出扩散湍流火焰中的燃烧过程。

The combustion events in the swirl chamber and the main chamber are processed differently. The combustion in the swirl chamber is broken into three phases: low temperature ignition, high temperature premixed combustion and flamelet diffusion combustion, while the combustion in the main chamber is only considered as flamelet diffusion combustion. The Shell ignition model, global Arrhenius equation and coherent flamelet model are used to describe low temperature ignition kinetics, high temperature premixed kinetics combustion and flamelet diffusion combustion respectively.

把涡流室式柴油机不同区域与不同时期的燃烧过程分开处理，将涡流室中的燃烧过程划分为三个性质不同但相互重叠的阶段：用Shell着火模型模拟的低温着火化学动力学反应阶段，用Arrhenius方程模拟的高温预混燃烧化学动力学反应阶段和用相关火焰微元模型模拟的扩散燃烧阶段，认为主燃烧室的燃烧只有相关火焰微元的扩散燃烧阶段。

There are two primary forms of rabies: urban rabies, spread by nonimmunized domestic dogs and cats and rural rabies spread by the skunk, fox, raccoon, bat, and occasionally livestock.

他们是两个主要的类型：市内的病毒，扩散到没有免疫的家庭狗和猫，乡下的病毒扩散由臭鼬，狐狸，浣熊，蝙蝠，偶尔是家畜。

Studies using FRAP in living cyanobacteria cells have shown thatphycobilisomes diffuse rapidly on thylakoid membranes, and this diffusion is requiredfor state transitions in cyanobacteria.

在蓝藻活体内利用FRAP技术的研究已经表明藻胆体可以在类囊体膜上快速的自由扩散，且该动态扩散对蓝藻的状态转换是必需的。

FRAP is a technique widely usedin cell biology to observe the dynamics of biological systems, including the diffusionof membrane components.

FRAP是在细胞生物学中被广泛用于测定生物体系动态性包括生物膜组分动态扩散的一种技术，其原理是利用高强度激光将细胞内一小部分区域的荧光分子漂白，然后通过记录该区域随后的荧光恢复，检测周围未漂白区域内的荧光分子与漂白区域荧光分子的交互扩散。

In Perona and Malik's anisotropic diffusion model, some small gradient information and noise will be diffused, but the small information point usually has zero gauss curvature. So this paper improves PM model by using the Gauss curvature.

在Perona和Malik的各项异性扩散方程的消噪模型中，一些小梯度的细节信息和噪声会被扩散掉，而在这些细节信息点往往具有零高斯曲率的特征，根据这一特点，对PM模型加以改进。

In Chapter 5, we mainly discuss the golbal bifurcation of the steady state problem for the strongly coupled competitor-competitor-mutualist model under zero boundary conditions.

因此，较强的扩散或交错扩散对系统生成稳态模式起着促进作用。

The diffusion wave equation with the neglect of lateral discharge and backwater effect is resolved, and the analytical solution is represented by S-curve or duration unit hydrograph.

导出了具有分布式旁流的自由下边界条件的扩散波方程的解析解，这是对前人导出的不考虑旁流的自由下边界条件的扩散波方程解析解的补充。

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。