分子

Both the simulation results and the absorption spectra indicated the important contribution of pyrene at C9 of fluorene moieties to molecular orbitals.

采用半经验AM1方法对分子MP1和MP2进行了构象和分子轨道模拟，模拟和吸收光谱结果都显示出芘对分子能级的重要影响。

YTY paper reinforcement of the recently developed a new water soluble polymer material, it is a high molecular weight polymer compound ionictype, mechanim, numberrepresentationof exesting non－ionic, and numberrepresentationof anions and cations, so this in paper-making process, you can and pulp fiber molecules multi-spots adsorption, which increases the fine celluiose filler and retention; at the same time it can also promote hydrogen between cellulose, and gives the paper jiantiao dry strength significantly increase, because the reinforcement of the unique structure, so it can be used with other paper cocatalyst compouding, a broad pH range as a reinforcement of the paper is available at wood pulp and wood pulp-straw gamasid mixed pulp and paper pulp etc.

YTY纸张补强剂系近期研制成功的新型水溶性高分子材料，它是一种高分子量复合离子型的高聚物，在其分子结构中，既有非离子基团，还有阴离子、阳离子基团，因此这在造纸过程中，可以与纸浆中的纤维分子形成多点吸附，从而提高填料与细纤维素的留着率；同时它还可促进纤维素分子之间的氢健作用，使纸张干强度明显提高，由于该补强剂分子的独特结构，因此它可与其它造纸助剂复配使用，能在较宽广的pH范围内，作为纸张补强剂，可以在木浆、木浆——草浆混合浆、革浆等多种纸浆中使用。

Emblica have many different forms and most of them have tails and their perforation plates divide into two types:(1)there is one simple perforation plate at each end of the vessel elements and (2) there is one simple perforation plate at one end of the vessel elements and two simple perforation plate at the other end;(3)a few vessel elements have special inclusions;(4)the intervascular pits are alternate pits;(5)the pits between the vessels and rays are mixed pits ,pits with transverse gashes and scalariform pits.

结果发现，余甘子次生木质部导管分子中存在着许多不同的样式，导管分子大多数具尾；其穿孔板存在着两种类型：(1)两端均为1个单穿孔板；(2)一端为1个单穿孔板；另一端为2个单穿孔板；(3)极少数的导管分子具有特殊的内含物；(4)管间纹孔式为互列纹孔式；(5)导管射线间纹孔式为混合型纹孔与横列刻痕状纹孔以及梯状穿孔。

Meanwhile, molecular weight of pectin was related to its physicochemical properties. The larger the molecular weight of pectin was, the more its galacturonic acid content and degree of esterification and gelatination were.

相对分子质量与其理化性质有着对应的关系，果胶半乳糖醛酸含量、酯化度和胶凝度随相对分子质量增大而增大，单糖组分也随相对分子质量增大而增多。

Molecular capsules based on glycoluril are one kind of unique artificial receptors assembled through noncovalent weak interactions and has already been widely applied to molecular recognition, self-assembly, molecular reactor and smart material.

甘脲类分子胶囊是一类独特的由非共价键弱相互作用力组装而成的人工受体，在分子识别、自组装、分子微反应器、智能材料等方面得到了广泛而深入的研究。

The average percentage of polymorphic bands are 72.06% for ISSR and 66.67% for RAPD respectively. The genetic diversity of ginkgo revealed by ISSR (the average effective number of alleles is 1.8780, the average Nei"s gene diversity is 0.4652, and the average Shannon"s information index is 0.6574) are all higher than those by RAPD (the average effective number of alleles is 1.7842, the average Nei"s gene diversity is 0.4317, and the average Shannon"s information index is 0.6211), while the standard errors of the parameters estimated by ISSR were lower. Therefore, ISSR molecular markers are more suited than RAPD molecular markers when testing the genetic diversity of ginkgo populations and determining the genetic relationship of among populations or among individuals which are much similar hereditarily.

本文应用RAPD和ISSR两种分子标记技术，选取中国5个可能的野生银杏居群共计75个样品，对其遗传多样性进行了研究，得出以下结论：(1)用筛选出的12个RAPD引物和10个ISSR引物进行PCR扩增，分别扩增出65条和68条重复性高、清晰的条带，多态性位点百分率分别66.67%和72.06%，ISSR揭示的银杏遗传多样性(平均有效等位基因数目为1.8780，平均基因多样度为0.4652，平均信息指数为0.6574)高于RAPD所得到的结果(平均有效等位基因数目为1.7842，平均基因多样度为0.4317，平均信息指数为0.6211)，其所估算参数的标准差要低于RAPD所估算出的值，因此，在研究亲缘关系非常近的银杏物种的遗传多样性并试图确定居群间或个体间的遗传关系时，ISSR分子标记技术比RAPD分子标记技术更为合适。

Our results suggested that the channel contains two of each subunit and the stoichiometry is apt to 2:2 if hetermeric ASIC channel is a tetramer,while the assembly of ASICs is random,the stoichiometry is not fixed(2:1 and 1:2 coexist)if hetermeric ASIC channel is a trimer.This study provided interesting new data supporting the occurrence of the homomeric and heteromeric assembly of ASICs.

另外，我们还对ASIC异聚体的分子比情况进行了初步的探讨，结果发现如果所形成的ASICs异聚体通道是四聚体，那么每种亚单位有两个，分子比倾向于2∶2；如果是三聚体，则提示ASICs的装配是随意的，分子比是不固定的，2∶1和1∶2这两种情况都存在。

In fact, any factor which interfere the formation of the hexameric IL-6 receptor complex might inhibit or antagonize the effect of IL-6. These factors include the IL-6 mutant, sIL-6Rα mutant and soluble gp130, as well as their antibodies.

事实上，任何能干扰IL-6信号转导中异六聚体复合物形成的因素都可能抑制或拮抗IL-6的作用，其中包括IL-6的突变体分子、sIL-6Rα的突变体分子和可溶性gp130分子以及它们的抗体。

In this thesis, a series of complexes based on aromatic multicarboxylic acids have been successfully synthesized in solutions or under hydrothermal conditions. Their structure and properties are investigated.(1) Eight complex compounds have been synthesized and characterized by X-ray single crystal diffractive technology: The eight complexes are listed as following: [Cu242] complex 1 [Cd22(H2O)4]·4H2O complex 2 [Co(H2btc)(H2O)3] complex 3 [Co2(H2O)2]·H2O complex 4 [Ni22(H2O)4] complex 5 [Cu22(H2O)4] complex 6 [Co(H2biim)2(H2O)2](H2btc) complex 7 [Zn(H2biim)2(H2O)2](H2btc) complex 8 The structure of complex 1 is dinuclear complex resulted from weak interactions（0-D chain）; complex 2 is 1-D chain stucture result from interactions of water molecules; complex 3、4、5、6 are coordination polymers using hydrothermal synthses, where the first kind ligand is H4btc, the second kind ligand is phen and Co2+、Ni2+、Cu2+ as center ions, respectively. While the coordination enviroment of Co2+ is the same in complex 3, the coordination geometries around the Co atoms in complex 4 are obviously different because of the different reaction conditions. In complex 4, the 1-D chains are connected into 2-D layer through carboxy groups of ligand H4btc. The structures of complex 5、6 are 1-D chain stucture result from interactions of carboxy groups in ligand H4btc. Complex 7、8 are homeomorphy compounds. Either of them are linked to the 3-D chains through intermolecular hydrogen bonds. Each H4btc lose two protons and H2btc2- acts as negative electron balance.

合成了8个结构新颖的配合物，并用X-射线单晶结构分析方法确定了晶体结构，分别为： [Cu242] 配合物1 [Cd22(H2O)4]·4H2O 配合物2 [Co(H2btc)(H2O)3] 配合物3 [Co2(H2O)2]·H2O 配合物4 [Ni22(H2O)4] 配合物5 [Cu22(H2O)4] 配合物6 [Co(H2biim)2(H2O)2](H2btc)配合物7 [Zn(H2biim)2(H2O)2](H2btc)配合物8 配合物1是一个依靠弱作用连接的双核铜结构；配合物2借助水分子形成一维链状结构；配合物3、4、5、6是以H4btc为第一配体、phen为第二配体，通过水热法合成的配合物，其中，Co2+、Ni2+、Cu2+为中心离子；配合物3中的二价钴离子具有相同的配位环境，不同反应条件下得到的配合物4中的二价钴离子存在不同的配位环境，在配合物4中，一维链通过H4btc上的羧基形成一个二维层结构；配合物5、6是借助H4btc上的羧基形成的一维链状结构；配合物7、8属于异质同晶结构，它们的分子通过分子间氢键形成三维网状结构，H4btc上的羧基失去2个质子，作为一个二价负离子起到电荷平衡作用。

The amphiphiles, 4-8, can not form reverse bilayers in organic solvent, which result in that the molecular interactions unable to meet the need for hydrophile-lypophile balance, so that they crystallize and exhibit no gelling abilities. The mono-chained L-alanine derivatives, 1-3, can self-assemble into bilayer aggregates, through intermolecular hydrogen bonding and homochiral effect in a number of organic liquids, which are juxtaposed and interlocked by van der Waals interaction, and finally gelate the organic liquids.

单链酰基化L-丙胺酸两亲物1-3在一些低极性的有机溶剂可以通过分子间氢键相互作用及同手性聚集作用形成有序的反双分子膜结构，这些有序反双分子膜结构单元依靠vander Waals力相互作用可以平行排列且相互之间进行连结形成长纤维状的聚集体，纤维状聚集体在有机介质中可以进一步相互连结形成三维网状结构，进而胶凝有机溶剂。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。