极化

It is found that the phase-conjugate fifth-order polarization beat is due to the interference between fifth- and fifth-order optical polarizations, the beat signal oscillates not only temporally but also spatially, and the measurement accuracy for laser absolute frequency could reach the same order of magnitude as the laser linewidth.

发现相位共轭五阶极化拍频是五阶非线性光学极化强度之间干涉的结果，拍频信号不仅进行着时间振荡而且同时进行着空间振荡，它对激光绝对频率的测量可达到与激光线宽同一量级的精度。

It is found that the phase-conjugate fifth-order polarization beat is due to the interference between fifth- and fifth-order optical polarizations,the beat signal oscillates not only temporally but alsospatially,and the measurement accuracy for laser absolute frequency could reach thesame order of magnitude as the laser linewidth.

发现相位共轭五阶极化拍频是五阶非线性光学极化强度之间干涉的结果，拍频信号不仅进行着时间振荡而且同时进行着空间振荡，它对激光绝对频率的测量可达到与激光线宽同一量级的精度。

A novel direction of arrival and polarization estimation of electromagnetic vector sensors mounted on the airframe is proposed based on biquaternion. The signal processing model for EM-sensor mounted on the airframe is made by biquaternion and then the eigenvalue decomposition of spectral matrix is obtained by means of the EVD of its quaternion adjoint matrix. The memory requirement for data is reduced, and more accurate estimation result is gotten by deducing the stronger orthogonality constraint between the sin- gal and noise subspaces on the field of biquaternion. The performance of the new algorithm is confirmed through numerical examples.

针对机载电磁矢量传感器阵列DOA和极化参数估计问题，提出了一种基于复四元数估计方法，该算法利用四元数建立机载电磁矢量传感器阵列信号处理模型，然后利用四元数联合矩阵的特征分解得到阵列数据相关矩阵的特征分解，一方面使得计算过程中数据的贮存量大大减少，另一方面通过推导得到信号子空间和噪声子空间在四元数域上的正交性从而使DOA和极化参数佑计的精度更高，仿真证实了本算法的有效性。

This is a new kind of photoinduced phenomenon and it is a one-photon process.(2)A bipolaron is split into two polarons by photoexcitation.This photoinduced splitting converts a charge carrier into two spin carriers.(3)When the hopping effect is included, the energy of a soliton-antisoliton pair can be lower than that of single polaron in conducting polymers with degenerate ground state.

这是一种新的单光子过程光致现象；（2）通过光激发，一个双极化子可以分裂成两个极化子，这种光致分裂效应将一个荷电载流子转换为两个自旋载流子；（3）对具有简并基态的导电聚合物，如果计及跃变常数的变化这一效应，孤子-反孤子对的能量可以低于单个极化子的能量。

Conjugated polymers which are different from traditional semiconductor, have some unique properties. Most of them are quasi-one-dimensional systems with strong electron-phonon interaction. Their carriers are composite particles, which are different from simply electron and hole, characterized with the surrounding distortion of lattice configuration (polaron with spin 1/ 2 , bipolaron with spin 0 etc.). The transport of the carriers and the process that oppositely charged polarons combine to from exciton are believed to be of fundamental importance for electroluminescence properties.

共轭聚合物具有不同于传统半导体的特性，它们是强电-声相互作用的准一维体系，其载流子不再是简单的电子和空穴，而是伴随晶格畸变的具有内部结构的复合粒子(自旋1/2的极化子、自旋为0的双极化子等)，这些载流子的输运、以及正负极化子对复合成激子的过程在很大程度上决定着聚合物的电致发光性质。

Carriers in organic semiconductors include spin polarons as well as spinless bipolarons, and we assume that the variational polaron proportion decreases exponentially into the organic semiconductor in the structure of ferromagnetic/organic semiconductor.

有机半导体中的载流子为自旋极化子和不带自旋的双极化子，极化子比率在有机半导体内随输运距离变化。

METHODS: After isolated the PBMCs and blood-plasma from adult human peripheral blood by Ficoll-Hypaque centrifugation, the PBMC culture procedure with or without the self-blood -plasma was applied to polarize T cells in vitro , these cells were polarized by PHA(20 mg/L),non-PHA respectively.

用Ficoll-Hypaque梯度离心法分离出正常成人抗凝外周血单个核细胞和血浆，将PBMC置于含或不含有自身血浆环境中，并在植物血凝素(PHA ，2 0mg L)的刺激下进行培养，培养 2 4、48、72h后收获细胞，分别用双色免疫荧光标记，以流式细胞术对CD4+ T细胞表达表面分子CCR3、CCR5进行分析。结果：CD4+ T细胞受自身血浆和PHA刺激后向Th1 Th2两个方向极化，2 4、48、72h后极化率分别达到(13 2 8± 1 5 9)%(12 70± 1 6 5 )%、(17 19± 1 0 3)%(17 5 0± 1 30 )%、(19 49± 2 87)%(18 5 8± 1 49)%；而只有PHA刺激的极化率很低，两组有显著性差异(P 0 1)；Th1∶Th2之比约等于 1。

The presence of polarized potential is a ge neral property of the existence of an oil/gas reservoir. The whole oil/gas reser voir together with its diffusion-flowing belt can be taken as the source of the potential field, and the polarized potential can be described by a model of pol arized dipole.

油气藏存在极化电动势是共性，可以将整个油气藏、扩散带和扩散流动带作为场源，其极化电动势可用极化偶极模型描述。

The calculated isotropic polarizability, polarizability anisotropy invariant and hyperpolarizability are 305.4, 188.3, and 1155.4 a.u., respectively.

计算的各向同性极化率、极化率各向异性不变量和平均超极化率分别是305.4、188.3、

The calculated isotropic polarizability, polarizability anisotropy invariant, and hyperpolarizability were 577.7, 96.9, and -22.8 a.u., respectively.

计算的各向同性极化率、极化率各向异性不变量以及超极化率分别是577.7、96.9、-22.8a.u。。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。