链体

At first, the dynamic equations of a multibody chain system with prismatic and revolute joints are established according to d' Alembert principle in the form of virtual work.

本文首先从虚功形式的d'Alembert原理出发，建立了具有滑移/转动铰的多体链系。。。

A new hexagonal approximant has been found in Al-Cr-Si alloys and its axial lattice parameter follows a τ''s power series τ=(1 √5/2 is the golden number relationship, implying that they are all decagonal approximants. A rule of the icosahedral chains in them has been found.

在Al-Cr-Si合金中发现一种新的六角近似相，它与几个结构已知的六角相的晶格常量呈黄金数τ=(1 √5/2的幂级数关系，说明它们都是十重准晶的近似相，并找出其中二十面体链的规律。

Based on the analysis of parent-daughter relationships in the three relevant fission product decay chains, a two-step delayed chemical separation procedure for rapid isolation of 91Sr from neutron-irradiated 235U sample was developed.

以衰变链中的母子体关系为依据，"两步延迟分离法"为基础，对裂变产物中91Sr的快速分离方法进行了研究。

Doing regular颇似page, marked "All rights reserved Shenzhen City Notary Office" note and a red body of the message the word link "Today, I Department of the prize-winning activities Tencent notary solemnly declare," the statement said," Happy May to send "activities are organized by Shenzhen Tencent lottery has been approval through the notary, qq for the user can safely receive the relevant procedures, but need to include the operating costs and to pay personal income tax of 750 yuan, including fees.

网页做得颇似正规，标着"深圳市公证处版权所有"的说明，并有一个红体字的消息链接"今日我处对腾讯公司有奖活动进行公证郑重声明"，该声明称，"五月欢乐送"活动是深圳腾讯公司举办的抽奖活动，已通过公证审批，qq用户可以放心地办理领奖相关手续，不过需先交纳包括运行费用及个人所得税在内的750元手续费。

Generally, B in the configuration closest cell's DNA conformation, it and the double helix model are similar. A-DNA and when RNA member double helix area as well as duplication forms the DNA-RNA hybrid molecule conformation is close. Z-DNA take the nucleotide dimer as the unit left-hand winding, its principal chain assumes the denticle the shape, therefore.

一般认为，B构型最接近细胞中的DNA构象，它与双螺旋模型非常相似。A－DNA与RNA分子中的双螺旋区以及转录时形成的DNA－RNA杂交分子构象接近。Z－DNA以核苷酸二聚体为单元左向缠绕，其主链呈锯齿形，故名。

All the compounds are characterized by IR and elemental analysis.we design and prepare a bipyridinium supramolecular compound and six coordination compounds, which are also characterized by IR, elemental analysis and X-ray structure analysis. According to X-ray structure analysis, hydrogen bonds and n-n stocking interactions participate in the architecture of three-dimensional framework [H2L1 (NO3)2 (H2O)2]n; one-dimensional zigzag coordination polymer [Hgl21.5CH3OH]n; binuclear metallamacrocycle (HgI2L2)2 3H2O; helical double-stranded one-dimensional coordination polymer [Co2(L2)2-2CH3OH]n; double-stranded one-dimensional coordination polymer [Co2(L3)2-CH3OH-CH3CN]n; and three-dimensional compound [Cu(C5H4NCOO)2(H2O)2]-H2O with hydrogen bonds, three-dimensional coordination polymer {[Cd(C5H6NCOO)2H2O]-DMF}n, which are indirectly obtained from the precursor ligand L3 through metal ion induced the hydrolysis of diamide and self-assembled with the hydrolyzate.

我们首次合成了一个双吡啶鎓超分子化合物和六个过渡金属配合物，并通过IR谱，元素分析和X-ray晶体衍射分析对它们进行了表征。X-ray晶体结构分析表明：超分子化合物[H_2L1·(NO_3)_2·(H_2O)_2]_n是由多种氢键和芳香环间的π-π堆积作用构建的三维无限结构；[HgI_2(L1)·1.5CH_3OH]_n是一维锯齿状配位聚合物；(HgI_2L2)_2·3H_2O是双核金属大环化合物；[Co_2(L2)_2·2CH_3OH]_n是具有一维双螺旋结构的配位聚合物；[Co_2(L3)_2·CH_3OH·CH_3CN]_n为一维双链结构的配位聚合物；以及由非直线形配体L3在金属离子Cu和Cd的诱导作用下发生水解，并且金属离子与水解产物——异烟酸根离子自组装，形成了三维氢键超分子化合物[Cu(C_5H_4NCOO)_2(H_2O)_2]·H_2O和三维配位聚合物{[Cd(C_5H_6NCOO)_2H_2O]·DMF}_n。

The rheological character of a polymer often appears as shear-thinning. Most polymers behaviour in a solution can be explained by the polymer chain or hard sphere theory. Other than that, shear-thickening polymer solution also exists. Its behavior can be explained by dilatant theory, which suggests that the shear-thickening of the solution is due to the swelling of the polymer particles. This phenomenon often occurs in suspension or emulsion. Solution exhibits a mixed behavior can also be found whose behavior is such that shear-thinning occurs under low shear force and shear-thickening occurs under high shear force. Under this circumstance, the viscosity versus shear force graph exhibits a spoon shaped curve. The rheological study can be applied to the dispersion of paint which can predict the dispersion effect of various polymer materials in solution.

中文摘要一般高分子聚合物溶液的流变行为多半呈现剪稀(shear-thinning)的现象，而大部分的高分子在溶液中的行为是以分子链或是硬球观点来解释，另外也有剪稠(shear-thickening)现象的高分子溶液，其流变行为则是以膨胀体观点来解释，即在高剪切力下，由於高分子团体积变大而使溶液黏度升高，这在悬伏液、乳液等常见；但也有在低剪切力下，溶液具有剪稀的行为，而在高剪切力下却成现剪稠的行为，在黏度对剪切力作图时，会呈现出一个勾形曲线的图形；流变行为的探讨可应用在涂布材料的分散技术上，以推测不同的高分子溶液对分散效果的影响。

The domains Ca2 and Ca3 are responsible for the dimerization of a-heay chains in immunoglobulin A molecules under natural conditions.

在天然状态下，IgA分子的Ca2和Ca3结构域负责重链的二聚体化。

The advance of multipodal ligands and their complexes, and the research situations of electroluminescence materials are briefly reviewed.

对多足开链配体及配合物的研究进展和电致发光材料、研究现状作了简要的文献综述。

The recombinant mouse enterokinase light chain could be well expressed in Ecoli, but most of them were inclusion.

利用pET32a/BL21(DE3)表达系统成功地在大肠杆菌中表达了重组鼠源性肠激酶轻链，表达量约占大肠杆菌BL21(DE3)总蛋白的30%，但多以包涵体的形式存在。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。