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The main factors affecting the soil-structure interface behaviors were found experimentally and theoretically, including: 1 the thickness of the interface that is five to six times the average grain size of the soil; 2 the aeolotropy of interface, which is responsible for anisotropic response of the stress-strain response of the interface; 3 two physical states, including crashing and compression of the soil near the structure surface, which govern the stress-strain response of the interface strongly; 4 two shear deformation components due to sliding and constraint of the structure surface relative to the soil respectively, which forms the deformation of the interface; 5 the volumetric strain due to dilatancy, which is found to be composed of a reversible dilatancy component and an irreversible dilatancy component. 4. A unified constitutive model of the interface, based on new elasto-plasticity damage theory, was developed. It was confirmed to be effective for the conditions considering monotonic and cyclic shearing, coupling effect of shear and volumetric strains, evolution of physical state, micro-structure aeolotropy of the soil and the resulting aeolotropy of the interface as well as the three normal boundary conditions stated above. 5. 2D and 3D finite element formulations of the present model were derived and incorporated into the FEM codes. They were applied to the evaluation of practical engineering problems with different typical interfaces between soil and structure. The new model was shown to be reasonable and effective.

确定了粗粒土与结构接触面厚度约为5~6倍的平均粒径,首次揭示了接触面的细观结构异向性以及由此所引起的宏观剪切异向性,发现了在单调和往返剪切荷载作用下土颗粒破碎和剪切压密两种物态变化机制共同支配着接触面力学性质的变化,通过细观分析证实了接触面的变形可分解为一般同时发生的土与结构交界面上的滑移变形以及结构面位移约束范围之内土体本身的剪切变形两部分,观测到接触面受剪时表现出明显的相对法向位移,并可分解为可逆性和不可逆性两个分量;(4)建立了第一个能够统一地描述单调与往返剪切特性、剪应变与体应变耦合特性、细观结构和宏观剪切异向性以及土颗粒破碎等物态变化特性的土与结构接触面弹塑性损伤本构数学模型,并采用多种法向边界条件复杂加载路径的试验成果验证了新模型的合理性和有效性;(5)提出了新模型的二、三维有限元格式并结合实际边值问题进行了应用计算分析,比较了不同接触面本构模型对计算结果的影响,证实了新模型及其有限元格式不仅能够合理地描述土与结构接触面的主要力学特性,还能够较好地反映土体与结构物在接触面处的滑移、脱开等不连续现象。

The study has shown:(1) With increasing sediment depth and the woody giblets, the total organic carbon, the extraction of benzene , the total humic acids and the unhydrolyte are enhanced, while the hydrolyte is decreasing.(2) According to the GC-MS analysis, n-alkane,n-alkan-2-ones and n-alkanones are composed mainly of long-chains,such a result is thought to be characteristic of a herbaceous input from 2300a.B.P. n-alkanones exist in the samples may be considered as the evidence of microorganisms activity.(3) It is showed that the lipids is more sensitive to the climate change than the floristic. The proxy of the pollen spore of the peat stratum is different from the normal environment proxy. It is one of the main reasons that the sensitivity difference of the bog vegetation reacting to the climate isn't accordant with the log of the fat molecule fossil and biology fossil.(4) The transformation of the peat organic carbon is under the influence of temperature,acidity,organic material constituting, etc, and it showed the up-trend with the depth. In the short-term scale, the conversion of the peat organic carbon is effected by seasonal water,regional climate and vegetations; while in the long-term scale, it is controlled mainly by the climate.(5) According to the comparing the orderliness of organic compound,vegetation giblets with the depth to the characteristics of the peat molecule fossil with the section, in the development of this peatmire, 1500a B.P(210cm)is regard as the borderline of the late Holocene, the keynote of the front period is warm with several cold fluctuations, and the trend of the back period is dry and cold although there were several fluctuations.

研究表明:(1)随深度的增高及植物残体中木本残体的增多,总有机碳、苯萃取物、总腐植酸、不被水解物含量逐渐增高,而易水解物含量减少;(2)GC- MS分析显示,正构烷烃,直链烷基2-酮和正烷醇均以长链组分为主,揭示了该泥炭柱剖面2347a.B.P的母源输入以草本植物为主;甲基酮类和短链正烷醇的存在是微生物活性很大的生物证据;(3)通过有机分子标志物与孢粉、植物残体等指标的对比研究表明:脂类化合物对气候变化的反映要比植物种灵敏得多,不同沼泽植物对气候变化的敏感性的差异是脂类分子化石记录与生物大化石结果很难一致的主要原因之一;(4)泥炭有机碳的转化受到温度、酸度、有机物质组成等很多因素的影响,短时间尺度,泥炭有机碳的转化受季节性降水、地方气候和植被等因素的影响;长时间尺度,泥炭地有机碳的转化,受气候条件控制;(5)总结泥炭分子化石特征、泥炭有机质各组分含量及植物残体组成随深度的变异规律,分析结果显示该泥炭地层形成过程中,1500a B.P(210cm)可作为划分前后晚全新世的界线,前期的基调是气候偏暖,但又有几次偏干冷气候的反复,后期气候以干冷为主,其间虽有几次上升波动,但整体趋势不变。

Under a fixed model of chromospheric flare, we investigate the influences of Hα and CaIIK line profilles on various velocity distributions from semiempirical view. The results show that: Hα line is very sensitive to the velocity in upper chromosphere; the profile of CaIIK line have responses to velocity in any layer of chromosphere, but the degree of CaIIK line asymmetry is much weaker than that of Hα and can be ignored if velocity is as small as 10km/s; chromospheric condensation in lower part of transition region have strong influence on Hα line but contrary to CaIIK line, the typical characteristic of H line effected by chromospheric condensation in transition region is reversed blue asymmetry, i.e. the intensity of blue peak is stronger than that of red peak; the stronger the chromosphoric condensation is, the more obvious the Hα line asymmetry appears; and so on.

在确定的大气模型下,从半经验角度系统地研究了大气各个层次的速度场和运动结构对Hα和CaⅡK谱线轮廓的影响,得到;Hα线对色球上部速度场敏感,而对色球下部和温度极小区附近速度场不敏感;CaⅡK对整个色球速度场均有反应,但不对称性较Hα弱,且速度小于10km/s时不对称性很不明显;CaⅡK受过渡区色球凝聚的影响较弱,而Hα对色球凝聚十分敏感;色球凝聚影响Hα轮廓的典型特征是呈反转结构的兰不对称性,即兰峰强于红峰;色球凝聚越强,Hα不对称性也越显著:等。

1 "Force majeure events" refer to objective situations that cannot be foreseen and avoided, such as natural disasters, government behaviors, and abnormal phenomena of the society. If one party can not fulfill the obligation of the contract due to force majeure events, it should notify the other partyin fifteen days after the come-out of the event. The two parties should try their best to reduce loss. If any force majeure event causes one party's failure or delay in fulfilling its obligation, it is not taken as breaking the contract. The party who claims loss of capability of fulfilling the contractshould take proper measures to reduce as much as possible or eliminate the impact of the force majeure event and try to resume its fulfillment of the obligation as soon as possible.

7.1 &不可抗力事件&指不能预见、无法避免且不能克服的客观情况,如:自然灾害、政府行为,或社会异常现象;若一方因不可抗力事件而不能履行本合同所规定的义务,该方应在不可抗力事件发生后十五天内书面通知另一方,双方应尽其最大可能地减少损失;若发生不可抗力事件,一方无需对因不能履行或损失承担责任,并且此种履行失败、迟延,不得视作对本合同的违约,声称因不可抗力事件丧失履行能力的一方应采取适当措施最大限度减少或消除不可抗力事件的影响,并在尽可能短的时间内尝试恢复履行受不可抗力事件影响的义务。

A junction box to seal the contents from the effects of dust and moisture while providing convenient access inside the box.

一种接线盒,在提供方便地进入其中的同时密封其内部不受灰尘和湿气的影响。

The model material can accurately simulate rock features at the site of Jingping Project, which can be suitable for a wide range of gravity density, possesses low compression strength, and elastic modulus, remains steady property in different temperatures and moistures, has no pollution on environment, is cheap in cost and is simple in manufacturing technique. Experiments verify that studying method is correct and the result is reliable.

在参考前人研究成果的基础上,根据相似材料配比遵循的原则,通过大量的试验,研制出了材料重度可调范围大,抗压强度和弹性模量低,性能稳定不受温度和湿度的影响,且无毒害、价格便宜、制作工艺简单,能够较为精确地模拟锦屏工程实际岩体的模型材料,其研制方法正确,试验结果可靠。

This hypothesises that climate change associated with ice ages regularly shrinks and fragments the forest into isolated "refugia", which go their own merry evolutionary way.

。这个解释是假设,和冰河时代有关的气候变化规律性地减少森林规模,并且把它们分隔成孤立的&生物避难所&,这些避难所然后以自己的方式进行进化,不受外界影响。

For the structure stress condition, the dead load is born mainly by continuous rigid-frame, and the live load is born by both the arch rib and the main beam, the force separately bora by the arch rib and the main beam is influenced by the whole rigidity of beam and arch, and by areas of flexible hanger rod, the structure perforce is no longer same with the common beam and arch, and the inner force analysis progress is more complex to the common bridge system, especially, the multi-direction stress analysis to the combination area of pier、 arch and beam is very difficult, for such reasons, so it is very necessary and important to have stress performance analysis in the combination area of pier、 arch and beam.

从结构受力情况来看,梁体自重主要由连续刚构承受,活载由拱肋与主梁二者共同承受,各自承受力的大小受梁、拱相互整体刚度、柔性吊杆面积的大小影响,结构性能已不同于一般的拱与梁,结构内力分析的过程较一般桥梁体系较为复杂,特别是墩、拱、梁结合处的多向受力状况的分析难度更大,所以对该桥式结构,墩、拱、梁结合部的结构受力特性进行进一步地理论分析测验研究也就显得十分必要和迫切了。

The lack of a well-characterized in vitro model of load-induced cardiac hypertrophy has hampered further mechanistic investigation in this area, and little is known as to how mechanical load in initially converted into intracellular signals of gene regulation.

以往对心肌肥厚的实验研究基本上采用体内实验方法,然而,在体的实验研究由于受血液动力学、激素、神经反射的影响,不能恰当地反映一些因子或激素在心肌肥厚中的意义。

The contents of each case shall be completely weather and dust-proofed by the use of non-permeable film, of suitable strength such as 'Polythene' sheet, tar paper or approved equivalent, to form a sealed moisture barrier.

每个箱内的货物必须保证完全地防尘和不受气候影响,必须使用非渗透性的薄膜加以包裹。

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However, as the name(read-only memory)implies, CD disks cannot be written onorchanged in any way.

然而,正如其名字所指出的那样,CD盘不能写,也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口,替代木托盘,免薰蒸,符合欧盟、北美各国对出口货物包装材料的法令要求;喷涂钢托盘适用于重载上货架之用,托盘表面根据需要制作成平板状、波纹状及间隔形式,满足不同的使用要求。

A single payment file can be uploaded from an ERP system to effect all pan-China RMB payments and overseas payments in all currencies.

付款指令文件可从您的 ERP 系统上传到我们的电子银行系统来只是国内及对海外各种币种付款。