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By virtue of method of continuum approximate limit, we obtained the solitons of the vibration of lattice in one-dimensional harmonic and inharmonic chains of polarized molecule, under the conditions considering and inconsidering the interaction of exciton with phonon, through solving moving equations of exciton and phonon.

运用连续极限近似方法,通过求解声子和激子的运动方程,得到了在不考虑激子与声子的相互作用和考虑激子与声子相互作用两种情况下的极性分子简谐链和非简谐链中晶格振动的孤子解,并得出了激子与声子的相互作用的非线性效应类似于晶格三次势的非线性效应,以及相同的非线性效应不论是同时作用还是单独作用都具有相同的非线性效应的结论。

Compared with the initial value problems of scalar conservation laws with smooth flux function, the global weak entropy solutions for the initial-boundary value problems of scalar conservation laws with weak discontinuous flux function include the following new interaction types: a rarefaction wave collides with the boundary and is absorbed compltetely or partially by the boundary; a rarefaction wave collides with the boundary and the boundary will reflect a contact or non-contact shock wave; a contact or non-contact shock wave collides with the boundary and is absorbed by the boundary; a contact or non-contact shock wave collides with the boundary and a new non-contact shock will rebound from the boundary simultaneously or later.

与具有光滑流函数的单个守恒律的初始值问题相比,具有弱间断流函数的单个守恒律初边值问题的整体弱熵解中包括下列新的相互作用类型:稀疏波碰到边界并被边界部分或全部吸收;稀疏波与边界相撞,边界反射出一个接触或非接触激波;接触或非接触激波碰到边界并被边界吸收;接触或非接触激波与边界相撞,边界同时或稍后反射出一个新的非接触激波。

Chapter 2 establishes a helicoid model of the 3D curved shock surface, which is a fundamental means for investigating the sweep of the 3D shock surface In chapter 3, the first step is to make definitions and detail concepts about various viewpoints of shock surface sweep. Secondly, those sweep angles of the 3D shock are calculated. After that, with the aid of the helicoid model, two general structure similarity variables are derived which are independent of any model, and their importance in shock structure investigations is discussed.

第三章首先给出激波曲面掠的各种基本概念,计算相应掠角;又借助螺面模型得到一般性的掠相似参数,并分析了它在激波结构研究中的意义,设想了激波气动掠参数的测量方法;第四章依据螺面模型探讨了前缘曲线掠与前缘激波曲面掠的关系,可能存在的均匀激波曲面、简单非均匀激波曲面和它们的运动学设计方法,其中得到一些很有用的概念。

By observing the effect of the short-distance transportation stress on the experimental animals, the method establishes the short-distance transportation stress evaluation, comprises technology index systems such as energy metabolism totem GLU, immunologic function executor WBC, HPA axial final effect laser CORT, etc., ensures that the health adaptive stage after the short-distance transportation stress is at least 72 hr and provides the nutrition replenisher intervention measure for relieving the adverse reaction of the short-distance transportation stress.

本发明通过观察短途运输应激对实验动物的影响,建立了短途运输应激评价的包括:能量代谢标志物GLU、免疫功能执行者WBC、HPA轴终末效应激素CORT等的技术指标体系,确定了短途运输应激后的健康适应期至少为72hr,并提供了减轻短途运输应激不良反应的营养补充剂干预措施。

So we designed a adaptive synchronizing controller based on hereinbefore hardware environment: first a small magnitude reference signal r is outputted to system through the signal card (to ensure that the vibrating system works in a linear state), and this signal is sent to the moving coil of vibrator through the power amplifier, so vibration is produced through electromagnetic induction. Secondly the vibration signal can feedback to the data acquiring card in the servo system through the acceleration sensor on the Vibroseis reactor M〓 and the base-plate M〓, then the computer can get the current vibrating state y〓 of the coil of vibrator according to the feedback information from the data acquiring card, and give a real time comparing between the current state y〓 and the reference output y〓 of the set-in reference model with current reference input being r , then regulates the correlative controlling parameters according to the error e〓=y〓-y〓 till y〓→y〓, finally normal signal sweeping begins with a certain phase fixed. Meanwhile a synchronization signal for seismic signal record is sent to seismograph from synchronization signal outputting component in the Vibroseis system to perform the controlling process of synchronization of sweeping phases.

为此,我们基于以上的硬件环境设计了一个自适应同步控制器:首先通过信号发生卡对系统输出小幅度的参考信号r(从而保证振动系统工作处于线性状态),信号通过前置放大器、功率放大器等送到激震器动圈,并通过电磁感应产生振动,振动信号通过可控震源激震器反应块M〓和基板M〓上的加速度传感器反馈给伺服系统中的数据采集卡,工控计算机根据采集卡的反馈信息,获取当前激震器动圈的振动状态y〓,并实时地将该状态与内置的参考模型在当前参考输入r下的参考输出y〓进行辨识,再将两者输出误差e〓=y〓-y〓对系统的有关控制参数进行调整,直至y〓→y〓,最后在经过某一固定的相位后,开始信号的正常扫描过程,与此同时,由可控震源系统的同步信号输出部件向地震仪送出一地震信号记录同步信号,进而完成扫描相位同步控制过程。

In order to verify the prediction efficiency, 27 interplanetary shock events from January 1979 to June 1982 and 68 interplanetary shock events from February 1997 to January 2000 are used for testing. Comparing the results of our disturbance model to those obtained by STOA and ISPM, we find that our disturbance model is as good as the other two models, and in some cases even better.

为印证扰动传播模型的适用性,利用79年到82年间的27个激波事件,以及97年2月到2000年1月间的68个激波事件,对激波到达地球轨道附近的传播时间进行了预测,并将结果与目前流行的行星际激波事件到达地球轨道时间的STOA和ISPM预报模型所得结果进行了比较。

In this dissertation, InGaAs/InGaAsP/InP MQW microdisk laser and its characterization were presented. Some conclusions are as following: the characteristics of lasing threshold was discussed by using rate equation. The dependent relations between threshold and cavity volume, spontaneous emission coupling efficiency β were investigated. The whispering gallery mode and spontaneous emission in a microdisk geometry were then studied. Almost all spontaneous emission was coupled into the lowest order TE mode when the normalized thickness of photonics well was between 0.15 and 0.5. The design principle and device process of InGaAs/InGaAsP/InP MQW microdisk laser were presented. The microdisk lasers with the diameter of 8μm, 4. 5μm and 2μm were succesfully fabricated by using etching techniques. The pulse lasing thresholds for the microdisk with the diameter of 8μm and 4. 5μm were 170μW and 15μW, a record results compared with the published in the literature. The cw lasing threshold for a 2-μm-diameter microdisk was only a few μW. We haven't found similar report up to now. To solve the problem of directional output in a microdisk laser, the power coupling efficiency in a double disk geometry was investigated with the theory of waveguide mode couple. A new structure of electrically pumped microdisk laser with output waveguide was designed, making a foundation for the practical use of microdisk laser.

本文主要研究InGaAs/InGaAsP/InP多量子阱半导体碟型激光器的研制和特性表征,并取得如下结果:利用速率方程理论讨论了激光器激射阈值的特性,分析了阈值与腔体积和自发发射耦合系数β之间的关系;讨论了微碟光子阱结构中的自发发射特性和微碟中WGM模式特性;光子阱结构在其归一化厚度在0.15-0.5之间时,几乎全部自发发射进入到最低阶TE模式中;研究了InGaAs/InGaAsP/InP多量子阱微碟激光器的结构设计原理和器件的制备工艺;利用刻蚀方法成功制备出直径分别为8μm、4.5μm、2μm的碟型微腔激光器;直径8μm和4.5μm的微碟脉冲光泵浦激射阈值分别为170μW、15μW,是目前所见文献报导中比较低的;直径2μm的微碟连续光泵浦激射阈值仅几μW,目前尚未见到达到类似结果的研究报导;为解决微碟激光器激射光定向引出的问题,通过波导耦合模理论分析了双层碟之间功率耦合效率;据此设计了新型带耦合输出波导的电泵浦微腔激光器,为进一步研制可实用的电泵浦微腔激光器打下基础。

The two-photon absorption cross-sections of these styryl derivatives were determined by Z-scan technique, and the benzothiazolium derivatives exhibited the largest TPA cross-sections (10〓s·cm〓/photon) and the best power limiting ability at high operable incident intensity. The results show that the benzothiazolium derivatives are promising organic compounds as two-photon absorption optical limiting materials. 2. Several organic dyes active to 800nm femtosecond laser with D-π-A structure were designed and synthesized.

研究了它们的上转换荧光、上转换激射和光限幅行为,通过改变染料分子共轭体系的大小,首次实现了在576nm-635nm范围内的双光子上转换激光波长的调节,其中噻唑啉碘盐类二苯乙烯化合物的双光子上转换激射峰(576nm)是迄今在1064nm皮秒激光作用下能够得到的最短波长的激光;阴离子显著改变上转换激射效率,但对上转换荧光峰和激射峰的位置影响很小;增加溶液的浓度,上转换荧光光谱和激射光谱红移,并在一定的浓度范围内,能够有效的提高上转换激射效率;利用Z-扫描技术测定了染料分子的双光子吸收截面,发现苯并噻唑类染料分子的双光子吸收截面高达10〓s·cm〓/photon,而且在较大的入射光强范围内,这类染料分子具有较大的光限幅能力,是一类作为双光子吸收光限幅材料很有潜力的染料分子。

The quasi-perpendicular collisionless shock consists of foot, ramp and a series of overshoots and undershoots, after travelling back upstream for a short distance, the reflected protons gyrate back into the downstream where an temperature anisotropy is formed due to an anisotropy of velocity distribution, then excite Alfvén ion cyclotron waves and mirror waves that dissipate the kinetic energy into heat; At quasi-parallel collisionless shocks, the reflected protons can travel far upstream, and lead to the generation of ion beam instabilities which excite large-amplitude right-hand polarized ultralow-frequency resonant waves whose frequencies are are about〓 These waves are convected back downstream by solar wind and gradually merge to form the downstream state, in the meantime new waves are generated continuously in the upstream, this process where ULF waves are generated and merge into downstream state is cyclical.

准垂直无碰撞激波系由根部、斜坡区以及一系列的低冲和过插组成,被激波反射的质子向激波上游运动很短的距离就在回旋作用下再次向下游运动,和激波发生相互作用以后进入激波的下游,在激波的下游引起质子速度分布的各向异性,进而引起激波下游温度的各向异性,激发起Alfvén离子回旋波和镜波,将激波上游的动能耗散成激波下游的热能;在准平行无碰撞激波(θ〓=10°)情况下,这部分质子能向激波上游运动很大一段距离,并在激波的上游激发起束流不稳定性,引起大振幅的低频波动。

Human tissue kallikrein(KLK1) proteolizes kininogen to release kinin, which plays important roles in blood pressure regulation, renal function and so on.

人组织激肽释放酶(human tissue kallikrein,KLK1)是激肽释放酶-激肽系统的核心成员,能裂解激肽原的特异肽键而释放激肽,并通过该系统发挥一系列的生物学功能。

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