结构稳定性

In this paper , an efficient optimality criterion method is developed for the mini-mum weight design of WF I-section frames with constraints on stresses, displacements, local buckling and cross-sectional dimensions.

本文利用优化准则法解刚架结构优化设计问题，可以处理工程上常用的宽缘工字梁型剖面结构在应力、位移、板局部稳定性和几何约束条件下的最小重量设计。

In Chapter 2, using 1,10-phenanthroline as the raw material, four ligands such as dipyrido[3,2-a:2',3'-c]phenazine,tetrapyrido[3,2-a:2',3'-c:3'',2''-h:2''',3'''-j]phenazine, 10,11-[1,4-naphtalendione] dipyrido [3,2,-a::2',3'-c] phenazine and 2-[4-hydroxylphenyl]imidazo [4,5-f] [1,10] phenanthroline were synthesized.

在此基础上研究配合物结构和性质上的变化，探索荧光指示剂结构与性质内在联系的规律，为光纤氧传感器提供荧光效率高、化学稳定性好的指示剂。

The invention has the advantages that by means of single film growth craft, supporting structures of a pier, a bridge leg, and a deck are accomplished, thus greatly lowering the difficulty and complicity of the craft; the pier, the bridge leg, and the deck are formed into a trinity, thus assuring the mechanical support of the whole micro bridge to be firmer and to have higher stability; meanwhile, the pier manufactured by means of the single film growth craft has a hollow shape, thus ensuring that the manufacturing process of the electrical channel of the micro-bridge structure is more simple, without the need of tapping in the pier; only simple photoetching craft is needed to guarantee the connection between the electrode at the upper end and the electrode at the lower end.

本发明利用一次薄膜生长工艺完成桥墩、桥腿和桥面的支撑结构，大大降低了工艺难度和复杂性，且桥墩、桥腿和桥面三位一体，使得整个微桥的机械支撑更为牢固，稳定性更高；同时，本发明利用一次薄膜生长工艺制作出的桥墩成空心状，使得微桥结构的电学通道制作过程变得更为简单，无需另外在桥墩中开孔，只需简单的光刻工艺即可保证上端电极和下端电极相连。

Use the research dissimilarity of the nuclear magnetic resonance method pH value condition as to it's structure of influence, assurance it structure of stability.

用核磁共振方法研究不同pH值条件对其结构的影响，确定其结构的稳定性。

The cloning, sequencing, homological blasting and Northern blotting results of 5 desiccation-induced cDNAs and 3 phosphate induced cDNAs implied that signal transduction induced by desiccation, regulatory gene cascades and functional genes such as G protein, protein kinase, VP3and MAD3-like genes might be involved in dehydration in the resurrection plant Boea hygrometrica.

对其中5个脱水特异诱导表达的cDNA（包括可能与复苏能力有关的cDNA）和3个磷酸盐处理诱导表达的cDNA进行克隆测序、同源性探测和Northern杂交检测表明，牛耳草脱水过程中诱导表达的基因可能涉及到脱水胁迫的信号转导、调节基因的级联作用（VP3，MAD3样基因等）、结构基因产物调节细胞结构在脱水胁迫中的稳定性等。

Prestressed technology can improve the strength and rigidity and stability, and adjust the dynamic performance of steel structure.

预应力技术可以改善钢结构的强度、刚度和稳定性，调整钢结构的动力性能。

Through the study in this thesis it is hoped to improve stability theory of steel frame and offer areference to the calculation of sideway resistance strength of steel frame with lateral brace.

通过本文的研究，将进一步完善结构整体稳定性理论，为带支撑的钢结构的抗侧移能力的设计计算提供了依据，获得的结论对工程设计具有参考价值。

The description of network delays including characteristics and effects are also covered and the uniformed mathematic models for NCSs with four different structures are derived. Furthermore, the controller basing on state prediction and compensating time delay is designed. Sufficient and necessary stability conditions for systems with different transmission policies such as perfect transmissions, delayed transmissions and time-varying transmissions are obtained as simple eigenvalue tests of certain test matrices. And in the end, effects of model error over maximum communication interval are analyzed. Numerical examples show the feasibility and efficiency of the proposed methods.

首先介绍了网络控制系统中数据包的传输情况以及基于模型结构方法的基本思想，并针对四种不同拓扑结构的控制网络分析了网络时延的性能，进而给出了统一的数学模型；然后，提出了基于状态预测的具有时延补偿功能的状态反馈控制器的设计方法，并针对完美传输、延时传输及时变传输三种数据传输策略，分别研究了控制系统的稳定性问题；最后分析了模型误差对最大通讯间隔的影响；仿真结果表明了设计及控制方法的正确性和有效性。

The interface stability of the spherical shell geometry is better than that of the cylinder

球壳会聚结构比柱壳会聚结构的界面稳定性要好些。

The feasibility and validity of the method have been proved by the examples of statical analysis, stability problem, dynamical eigenvalue calculation, and dynamical response analysis.

文中将这一方法成功地应用于随机结构的静力学分析、稳定性问题、动力特征值求解和动力响应分析之中，对随机梁、板结构编制了静力分析计算通用程序，证明了此法的正确性、有效性。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。