散射

Based on radar backscatter theory and scatter point model,aimed at the same frequency vibration scatter point of radar target,radar echo universal model is derived and the periodicity of amplitude modulation function and phase modulation function is researched at length.

基于雷达后向散射理论和散射点模型，针对雷达目标的同频振动散射点，详细推导并建立了雷达回波通用模型，对其幅度调制函数和相位调制函数的周期性进行了详细的讨论。

The polarization scattering matrice s for the fields scattered by the spherical bodywith complete polarization plane wave illuminating on them are presented using analytic meth-od.

应用解析方法给出了球体在完全极化平面波照射下散射场的极化散射矩阵表示式，通过极化比分析了球体散射场的极化特性。

In the biochemical analysis aspect, it is first time to use the simple fluorescence spectrophotometer to determine the protein in human serum by red alizarin as the probe of the RLS. The experiment shows that the system HSA-red alizarin has the maximum intensity of the RLS in Britton-Robison buffer of pH4.10 at maximum wavelength of about 360nm. The method has better linear range within 0.040-10.0ug/mL, determination limit is 0.040ug/mL. Moreover, We have selected three other dyes of chromotrope 2R, acid chrome dark blue and pyrocatechin violet as the probes of the RLS in determining protein in human serum and achieving satisfactory results.

在生化分析方面，作者首次使用简易960型荧光分光光度计，利用茜素红作为共振光散射光谱探针对人血清中的蛋白质含量进行了测定，测定结果显示在pH4.10的Britton-Robinson缓冲溶液，波长360nm处出现最大的共振光散射强度，其线性范围为0.040～10.0μg／mL，检出限为0.040μg／mL；另外，作者还筛选了其他三种可用作蛋白质测定的共振光散射光谱探针的有机染料：变色酸2R、酸性铬深蓝、邻苯二酚紫，并深入研究了测定的适宜条件和干扰情况，将这三种有机染料用于人血清中蛋白质含量的测定，均取得了满意结果。

The quasi periodic regularly structure of tissue peaks in the power cepstrum of ultrasonic backscatter.

本文论述了软组织散射元准周期规则分布导致超声散射信号相干峰产生的机理，提出利用AR幅度倒谱估计散射元平均间距及其变化，结合组织外加应力来估计软组织内局部杨氏弹性模量。

The composite scattering between dielectric sea surface and a conducting plate above it is calculated by using Physical Optical method and reciprocity theorem. Meanwhile, the dependence of the plate size on the composite scattering field is considered. The Doppler spectrum and the chaotic characteristic for the time series of composite scattering field are analyzed. Finally, artificial neural networks and wavelet analysis are introduced into the study of the sea clutter to realize the purpose of target detection, the factors which affect the detection of the target are discussed and the solutions to these problems are given.

同时利用物理光学近似结合互异性原理计算了介质粗糙海面与其上方导体运动平板的复合散射，考虑了平板尺寸对复合散射场的影响，并对复合散射场时间序列进行了多普勒谱分析和混沌分析，最后将人工神经网络和小波分析引入到海杂波的分析当中，实现了海杂波中目标探测的功能并讨论了影响目标探测功能的因素以及解决这类问题的方法。

The shape of the staff's section affect the RCS strongly. As a basic research work for electromagnetic scattering of 2D complex target, this disseration provides the powerful way in rigorous modeling and effective solution. The informations given in the disseration can help the stealth technology of aircraft.

本文研究作为二维混合散射目标电磁散射的基础研究为该类问题的精确建模和高效分析提供强有力的理论分析工具，对翼面RCS减缩及其散射机理的讨论可为飞行器翼面的目标隐身提供有效的理论指导。

It is found that the first scatterer is thinner than the results obtained from analytical computation and they are coincided better with thin-foil than thick-foil.

结果表明：Fluka计算得到的第一散射体的厚度小于解析计算得到的结果，散射膜薄的条件下二者符合好于散射膜厚的条件。

Mean scatterer spacing is an important parameter for describing the biological tissues miciostractuial features and tissues ultrasonic scattering characteristics.

生物组织散射元平均间距是描述生物组织微观结构特性和生物组织超声散射特性的重要参数，生物组织的超声散射特性研究是生物医学超声学中最基本最重要的课题之一。

The numerical results show that the laser DSS of the moving spherical particle is tightly connected with its speed and scattering zenith angle.

结果表明：运动介质球粒子的激光雷达微分散射截面与粒子的速度和散射天顶角有关，当粒子做低速运动时，由于运动对粒子的激光散射产生的影响可以忽略。

The results show:(1) the probability at small scattering angle is larger than that at big scattering angle. With the increase of collision energy, the scattering probability and the tail effect slow down.

结果表明：(1)小角散射的概率大于大角散射的概率；碰撞能量越高，散射概率越小，尾部效应越弱。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。