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Bending and torsion of monosymmetric I-section thin-walled curvedbeams with large displacement were studied in detail.The accurate expressions ofwarping displacement,normal stress,shear stress were given as well asgeneralized stress-strain relation.

对薄壁曲梁的有限位移理论进行了详尽的分析，得出了有限位移理论中单轴对称工形截面曲梁的翘曲位移、正应力、剪应力以及广义应力—应变关系的的精确表达。

The influences of mean stress, multiaxial stress and yield stress on the fatigue crack growth rate and the threshold value are analyzed.

分析了平均应力、多轴应力和材料屈服应力等对疲劳裂纹扩展速率和门槛值的影响。

In this study,under laboratory conditions,using traditional microbiological culture method,select the Pb2+ stress training of Pistia stratiote and Myriophyllum spicatum L. under water culture, through the changs of root- microbial of Pistia stratiote and Myriophyllum spicatum L.,the results show that bacteria,fungi,actinomycetes have different concentrations under Pb2+ stress. It is specificity of ammonification, nitrification,andanti-Nitrosation after Pb2+ stress.

中文摘要：本研究在实验室条件下，用传统的微生物培养法，选择重金属离子Pb2+在水培条件下对大薸和穗状狐尾藻进行胁迫培养，通过测定大薸和穗状狐尾藻根系的微生物区系及与氮循环有关的四种细菌的数量变化发现：细菌、真菌、放线菌对重金属Pb2+的不同浓度的敏感性不同；重金属Pb2+胁迫对氨化、硝化、亚硝化和反硝化四类细菌的影响也表现出各自的特殊性。

This subject study the influence of soil Naphthalin pollution stress on growth of corn, discussing soil Naphthalin pollution stress how to influence corn growth, besides discussing endogenous hormone how to regulate and control corn growth under soil Naphthalin pollution stress.

本文就多环芳烃对玉米整个生长周期的生长发育的影响进行研究，探讨土壤萘污染对玉米生长发育的影响，从激素调节水平讨论激素在萘污染下对玉米的生长发育的调控。

In the early Paleozoic and Indosinian cycle, the tectonic movement is weak, and the rock has acoustic emission once, whose maximum paleo-stress is 13.3MPa and 24MPa, moreover the Majiang ancient reservoir is in the mainly accumulation period; the high frequency and intensity paleo-stress correspond to the Majiang ancient reservoir's reservoir comes into being or destruction. The single Neopaleozoic acoustic emission whose maximum paleo-stress is 92.6MPa means the reservoir comes into being.

在早古生代末期和印支期构造运动较弱，测试岩石的发声一次，古应力值分别为13.3MPa和24MPa，是麻江古油藏的主要成藏期；声发射次数较多或者古应力值较大时的时期，主要对应于麻江古油藏储层的发育期和油藏大规模破坏期。

Discussion on the Increased Range of Allowable Stress in the Design Code for Industrial Metallic Piping;2. The article theoretically calculated and analysed the assembly Stress of the pontes to proofread the allowable stress of the plate and rivets.

本文以铆钉为例，从连接部分所受到的装配应力角度进行理论计算分析，校核板件与铆钉的许用应力，分析结构的稳定性，并预测连接部分的破坏部位。

These tests show that: 1. suction decreases with the increase of the water saturation in the chalk; 2. stress variants proposed are available for describing the stress state of the unsaturated chalk; 3. preconsolidation pressure increases with suction, while the effects of suction on the compressibility coefficients λ and κ are not evident; 4. as usual unsaturated soils, the permeability to oil of chalk increases with the suction; 5. yield strength of the chalk behaves with volumetric strain hardening; 6. cohesive behaviour of the chalk is related to the stress level, and relation between time-dependent deformation and logt is linear; 7. cohesion of the chalk decreases with the increase of the suction, while the elastic stiffness and the cohesion coefficient increase; 8. strength and elastic modulus increase with the strain rate, while the strain at the peak strength decreases with the increase of the strain rate.

试验结果表明，白垩中的虹吸力随水饱和度的降低而提高；吸力、水饱和度和强度的变化过程均与时间有关；可用由理论分析得到的应力状态变量描述非饱和白垩的平衡状态；前期固结压力随吸力增加而提高，而压缩指数λ与κ则同吸力无关；应力大于前期固结压力时，粘性变形与时间的对数关系曲线呈线性关系，其大小和增长速率均随吸力减小而增大，可视为白垩弹性刚度降低和粘性系数增大的结果；前期固结压力和变形模量随着应变速率的提高而提高，压缩指数κ和λ则随应变速率的提高而减小；应变速率较低时，粘性和吸力对前期固结压力及压缩指数的影响较小；白垩中油的渗透性随着吸力增加而提高；白垩在屈服阶段具有明显的体积应变硬化特性。

The model could also explain the changing regularity of stress, the cause of generation of residual stress during drying and the relievable effect of viscoelastic strain and mechano-sorptive strain on drying stress.

模型验证实验表明，本文提出的干燥应力模型可以准确描述木材干燥应力应变变化规律；但此干燥应力模型不能计算和解释调湿处理过程中的干燥应力。

The results showed that the cold stress could promote accumulation of Fpro in the leaves of Saccharum spontaneum L. and Sclerostachya. And when treated 3~0℃ cold stress, the content of Fpro increased with treating time, but it only increased in a short time when treated with lower temperature. Spraying sugar solution would boost the effect of cold stress. Fpro was mainly synthesized in the leaves of S. spontaneum L. and rapidly was transported to the stem and root.

结果表明，低温处理会引起叶片中Fpro含量增加，其中3~0℃低温处理时叶片中Fpro含量随处理时间延长而递增，而更低温处理只能引起Fpro含量短期内增加；外施蔗糖溶液能增强低温处理的效果；割手密叶部是合成Fpro的主要部位，Fpro在叶部合成后迅速转运到茎和根。

The conclusion is that sheering and radial stress are dominant in viscosity shearing force, and that Reynolds stress is larger than viscosity stress in turbulent flow, and the multiple is the Reynolds number.

由分析可知在粘性应力中，切向和径向剪切应力占主导地位；而在湍流条件下，雷诺应力是粘性应力的若干倍数，此倍数在量级上即为雷诺数。

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。