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The solid product was characterized by N2 adsorption-desorption, XRD, TEM and hydrothermal stability test. These results indicated that small amounts of HPMo in the synthesis media could reduce the amount of liquid in-organic acid and crystallization time greatly. And SBA-15 sieves prepared in this method exhibited an excellent hydrothermal stability, as its hexagonally ordered mesostructure was maintained after treated in 100 ℃ water over 72 h.

N2吸附-脱附、XRD、TEM和水热稳定性实验等检测结果表明：用这种方法不仅可以大幅度降低合成SBA-15分子筛所需液体酸的用量和缩短晶化时间，同时反应产物SBA-15在100 ℃的水中处理72 h后仍然保持六方有序的介孔结构。

This paper studies the exponential stability of cellular neural networks with time- varying delay by making use of the homoeomorphism theory, the idea of vector Lyapunov function, M- matrix theory and inequality - technique, offering the grounds for uniqueness of equilibrium point existence and the global exponential stability and estimating the exponential convergence rate index.

利用同胚映射理论、向量Lyapunov函数思想、M-矩阵理论和不等式技术，研究了具有变时滞的细胞神经网络模型的全局指数稳定性，给出了判定平衡点的存在唯一性以及全局指数稳定性的一个判据，并且估计了收敛速度指标。

Good thermal stability and self-extinguishing behavior was observed with the cured polybenzoxazine resins. Second, furan-containing benzoxazine monomers, P-FBz, BPA-FBz, and 4FP-FBz were prepared using furfurylamine as a raw material. Formation of furfurylamine Mannich bridge networks in the polymerizations of P-FBz and BPA-FBz increased the cross-linking densities and thermal stability of the resulting polybenzoxazines. P-FBz and BPA-FBz- based polymers also exhibited high glass transition temperatures above 300℃, high char yields, and low flammability with a limited oxygen index value of 31. The dielectric (Dk3.21–3.39) and mechanical properties (high storage modulus of 3.0–3.9 GPa and low coefficient of thermal expansion of 37.7– 45.4 ppm) of the P-FBz and BPA-FBz-based polymers were superior or comparable to other polybenzoxazines. 4FP-FBz used for polybenzo- xazine modification by means of formation of benzoxazine hybridation with P-FBz.

第二部份以2-呋喃甲胺为起始物，制备了P-FBz、4FP-FBz与BPA-FBz 三个含呋喃官能基之氧代氮代苯并环己烷的单体；BPA-FBz与P-FBz於开环聚合中形成之Mannich bridge网状结构有效地提升聚氧代氮代苯并环己烷聚合物之交联密度与热安定性；Poly与Poly具有大於300℃之玻璃转移温度、高的焦炭生成率与具有31之极限氧指数(Limited oxygen index， LOI)的难燃性特质，Poly与Poly之介电常数(Dk=3.21~3.39)与机械性质[3.0~3.9 GPa的储存模数与37.7~45.4ppm之低热膨胀系数( Low coefficient of thermal expansion， Low CTE)]均较其他聚氧代氮代苯并环己烷为优；4FP-FBz具有低之介电常数(Dk=2.7)，以其作为降低介电常数之反应型改质剂，与P-FBz混成，证实可有效地降低Poly的介电常数。

By means of simulation of complex nonlinear model of hydroturbine generating unit, the impact of the control law of hydraulic turbine governor on power system stability is researched, and a control idea of adopting water pressure feedback to improve power system stability is proposed.

通过对水电机组复杂非线性模型的仿真，研究了水轮机调速器控制规律对电力系统稳定性的影响，并提出了采用水压反馈改善电力系统稳定的控制思想。

Flow inside hydroturbine has great influences on its energy characteristics as well as unit stability. In particular, the vortex in the draft tube is an important factor which affects unit stability. Therfore, the research of flow in the hydraulic draft tube is continuouly receiving everbodys attention.

水轮机内部流动，不仅对其能量特性有重要影响，对机组的稳定性也有严重的影响，尤其是尾水管内的旋涡流动更是引起机组稳定性的重要因素，因此，水轮机尾水管内的流动研究一直受到大家的重视。

The rude drugs and their praeparatum stability meet the new medicine requirement by stability studies. At indoor temperature, their characters, discriminations, quantity difference, water content, disintegration time, contents and the hygiology index have no obvious variety.

对三批原料药及制剂进行了长期稳定性及加速稳定性考察，结果表明，该原料药及制剂在室温及加速条件下，性状、鉴别、装量差异、水份、崩解时限、含量、卫生学指标均无明显变化，符合质量标准草案的各项规定，证明该原料药及制剂稳定性符合新药要求。

By some typical numerical examples , the effects of delamination , hygrothermal and the progressive failure on the stability behaviors of the AGS plate and shell are discussed. The numerical results indicate that the effects of delamination , hygrothermal and progressive failure on the stability of composite AGS structures can not be neglected when the above factors result in a jump of the buckling mode.

通过典型算例讨论了湿热环境、累积失效及分层损伤等因素对复合材料 AGS结构稳定性的影响，数值结果表明当上述因素导致结构的屈曲模式发生突变时，其对 A GS结构稳定性能的影响是不容忽视的。

At first it analyzes the bedding rock slope"s bedded rock and its incontinuity face, and studies the stress, strain, stability"s condition of the bedding rock slope, fully considering the cohesive force of rock layer and incontinuity face.Geologic mechanics models of two types of bedding rock slope are set up, the instability coefficient of bedding rock slope under different mechanical parameters is computed, and the conclusion that the stability of bedding rock slope is relation to rock layerer, cohesive force of incontinuity face, inner friction angle and rock layer obliquity has been gotten.

本文首先对顺层边坡的层状岩体及其中的层理面和不连续面进行了分析，对其应力应变进行了研究，得出了顺层边坡的稳定性不仅与岩体中岩石的强度有关，还与岩体中层理面及不连续面的内聚力、内摩擦角及其倾角有关；论文建立了层理面和节理面的地质力学模型，讨论了其力学参数变化对边坡稳定性的影响，并在此基础上将层理面和节理面归纳为顺层边坡稳定性的结构面影响因素，同时讨论了影响顺层边坡稳定性的其他因素，从而得出顺层边坡稳定性的评价预测指标。

Considering the technical requirements,the stability andthe steady performance,the quantitative requirement for sampling frequency is present indiscrete control system.Considering that there is a step delay in discrete control in grid on inverter with a Lfilter,the quantitative relationship between critical FCCR and sampling frequency isanalyzed,and the steady performance is analyzed.Considering the technical requirements,the stability and the steady performance,the quantitative requirement for samplingfrequency is present in discrete control system with a step delay.

在L型并电加热管网中，考虑到离散化控制存在滞后一拍的问题时，本文分析并获得了离散PI控制系统稳定范围时闭环根临界频率fnmax和采样频率fs之间的定量关系；针对存在滞后一拍可能引起系统稳态特性下降的问题，分析了PI控制滞后一拍对频域特性造成的影响，综合考虑并网指标、稳定性要求和离散化对稳态特性影响三个主要因素，推导了存在滞后一拍的离散化PI控制对最低采样频率的量化要求。

Subgrade structure, as the main structure of railway construction, should have enough carrying capacity and deformation resistance capacity, can stand repetitive strength of the vehicle load without structural destruction and excessive sedimentation and deformation, meanwhile, it should have preferable penetration resistance capacity and water stability, to reduce water immersion and intenerate effect, therefore maintaining long time stability of the subgrade.

作为铁道建筑主体构筑物的路基结构，应具有足够的承载能力和抗变形能力，能经受车辆荷载的反复作用而不产生结构性破坏和过量的沉降变形，同时还应具有较好的抗渗透性和水稳定性，降低水的浸入及软化作用，保证路基长期处于稳定状态。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。