结构稳定性

Polyacence, polypyridinopyridine and paracyanogen molecules have been studied by using quantum chemistry MNDO, 1D tight-binding CNDO/2-CO methods.

采用MNDO、一维紧束缚CNDO/2 CO方法研究聚并苯、聚并吡啶及多聚氰的分子结构，揭示结构稳定性和电荷分布的变化规律。

In order to improve the electrochemical performance of LiCoO2, the majorities of researchers are working on the adjustment and substitution of the lay element, in order to increase the extract and deintercalated quantity and overcharge-resistant ability, the method pillaring in the interbed is brought forward for strengthening the structure stability.

目前为了改善LiCoO2的电化学性能，多数研究者进行的是层板元素的调控和替换，但实际效果仍不甚理想，我们采取层间柱撑金属离子的办法来提高材料的结构稳定性，以增加LiCoO2材料的锂离子可脱嵌量以及耐过充电压。

In order to improve the electrochemical performance of LiCoO2, the majorities of researchers are working on the adjustment and substitution of the lay element, in order to increase the extract and deintercalated quantity and overcharge-resistant ability, the method pillaring in the interbed is brought forward for strengthening the structure stability.

目前为了改善LiCoO2的电化学性能，多数研究者进(来源：8272A27BC论文网www.abclunwen.com)行的是层板元素的调控和替换，但实际效果仍不甚理想，我们采取层间柱撑金属离子的办法来提高材料的结构稳定性，以增加LiCoO2材料的锂离子可脱嵌量以及耐过充电压。

The article theoretically calculated and analysed the temperature stress of the pontes to proofread the allowable stress of the plate and rivets.

本文从连接部分所受到的温度应力角度进行理论计算分析，校核板件与铆钉的许用应力，分析不同温度对结构稳定性的影响，并预测连接部分的破坏部位。

The order-disorder transitions of stoichiometrical AB and A3B alloys werestudied by using effective-atom model based on EAM potential.The results give the analytic function form of the free energy in term of the long rangeorder parameter,and indicate that order-disorder transition behaviors of stoichiometri-cal AB and A3B alloys may be different. This method can be applied to interpret theexperimental results of order-disorder transition in stoichiometrical NiAl and Ni3Al.

利用EAM势基础上的等效原子模型分析了结构稳定性与长程有序度的关系，给出了二元体系结合能与长程有序度解析关系的一般表达式，说明当量成分下AB和A3B型合金有序无序转变行为的不同，并以NiAl和Ni3Al为研究对象具体研究了其有序无序转变，从理论上解释了这两种有序金属间化合物在实验中所表现出的不同有序无序转变行为特征。

Trackway ; Structural stability ; Critical temperature

轨道；结构稳定性；临界温度

The construction of Qinghai-Tibet railway has greatly changed thermal and mechanical conditions in its underlain frozen soil and accelerated the degeneration of frozen soil.Then,lots of warm frozen soil,which mechanical stability is unstable,will be formed in the foundation.

青藏铁路的修建，彻底改变了路基下伏土体的热力学状态，加速了多年冻土的退化，导致铁路地基土中产生大片的、力学性质极不稳定的高温冻土层，从而影响铁路路基的结构稳定性。

Comparing the landscape types of 1995 with that of 2005, we find out that:①the natural arbors are decreasing, with patches more fragmentation, size more odds, shapes more complex;②the area of natural shrubberies is increasing, with patches less fragmentation, shapes more simple and formulary ,the size of patches more even;③the area of natural grasses is increasing, with patches less fragmentation, shapes of patches more odds;④the area of timbers is increasing, with patches more dominance in landscape, more connectivity;⑤the area of Eucalyptus increases, with patches less fragmentation, shapes of patches more complex , more convergence, more connectivity;⑥the area of orchards is increasing, more connectivity;⑦the patches of the rubber is becoming more assemble, more connectivity, more formulary;⑧the area of plowland increases;⑨the area of reservoirs, rivers and ponds increases, with patches more assemble;⑩the area of cities decreases, with patches more dispersing, with shape more complexthe area of countries increases, with patches less connectivity, more dispersing, with shape more complex; the patches of the rest lands are more dispersing, with shape more complex;(3)In the process of economic development in the upper reaches of the Changhuajiang river watershed, a series of the ecological environment problems have appeared because a lot of landscape function broke off, and the connection of human landscape with natural landscape decreased, which aroused by the fragmentation of natural and semi-nature landscapes increased, the stability of the landscape structure decreased, as well as stress of human disturbance, resource and environment upon the landscape increased gradually.

3昌化江上游流域在经济发展进程中，自然与半自然景观破碎度增加，自然景观结构稳定性下降，人为干扰、资源和环境对景观胁迫逐渐增大，中断了许多生态过程，导致城市等人文景观与自然景观连接度很差，产生了一系列的生态环境问题。

The similar characters between S100p and other S100 members are following: 1. they are all dimmers.

保守的疏水核心区域对于S100P的结构稳定性有不可替代的重要作用。

Based on the study of the cycling capacity degradation mechanism of the alloys, it is found that the structure stability of the alloys and their hydrides is good during cycling and has not effect on the cycling capacity degradation of the alloys.

对La〓MgNi〓等合金的循环容量衰退机制进行的研究结果表明，在充放电循环过程中，上述合金及其氢化物的结构稳定性良好，与合金循环容量衰退较快的行为无关。

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。