分子

When there was no thrombin, aptamer probes could hybridize with molecular beacons in the highest degree, generating the largest fluorescence signal; when thrombin was introduced, the hybridization of molecular beacons and probes was depressed, and the depressing degree was associable with the concentration of thrombin.

没有凝血酶存在时，识体探针可以和分子信标最大程度地杂交，使得分子信标的荧光信号上升；当存在凝血酶时，与凝血酶孵育结合后的识体探针再与分子信标作用，分子信标被打开的程度有所降低，并且打开程度的降低程度与凝血酶浓度有关。

Then, inhibition mechanism and the relations between inhibition efficiency and molecular structure of inhibition of carbon steel in chlorhydric acid by benzene nitriles and quaternary ammonium salts are studied from microscope through quantum chemistry calculation, and according to the results, theory predicting and proof testing of a benzene nitrile (2-benzo butyl nitrile) are made.

利用Hansch关系的研究结果表明，苯腈类化合物在盐酸溶液中对碳钢缓蚀的缓蚀效率，可用苯腈类化合物氰基氮原子的净电荷密度和分子最高占据轨道能量或分子最低空轨道能量构成的表达式表达。量子化学计算研究结果表明：1、苯腈类化合物在盐酸溶液中对碳钢缓蚀的缓蚀机理可能是：苯腈类化合物分子以其氰基氮原子上的电子提供给铁的3d空轨道，形成配位键；同时铁的3d轨道上的电子提供给苯腈类化合物分子的能量最低空轨道，形成&反馈键&。

The surface pressure-area per molecule isotherm of 0.001molL^(-1) arachidic acid chloroformic solution at the air/liquid interface of pure water has been measured, and dynamic domains morphology of AA monolayer has been investigated via Brewster angle microscopy.

测定了花生酸的氯仿溶液在二次蒸馏水气／夜界面的单分子膜的表面张力与单分子面积的等温线，用布儒斯特角显微镜原位监测了花生酸分子成膜过程中单分子膜区域形貌的动态变化。

X6 3?,large specific surface area and adsorbent capacity However,most molecules and hydrated ions can not enter the aperture pass because of their size over the aperture diameter of palygorslote except less simple ones Furthermore,Palygorskite adsorbs water molecule choosingly In most cases the absorbing of palygorskite is by its outside surface that works in the form of colloid and ion exchange other than i...

但是由于凹凸棒石孔道直径小于大多数分子及水合离子的直径，除少数简单分子和离子外，多数分子和离子都不能进入凹凸棒石孔道，而且凹凸棒石选择性吸附水分子，因而在多数情况下，凹凸棒石对吸附质的吸附不是内表面吸附，而是外表面吸附。并且外表面吸附是胶体和离子交换吸附。本文阐述了凹凸棒石的孔道直径、吸附选择性、体系pH 值及凹凸棒石和蒙脱石胶体颗粒的互相作用对凹凸棒石吸附性能应用的制约。

When the reaction is carried out at 22 ℃, a cage complex with an encapsulated diethyl ether, 2 is prepared.

发现温度对自组装反应有着重要的影响：当组装在37-40℃进行时，可以得到包容一个NEt〓的阳离子型超分子笼1，其对阴离子为BF〓，处在超分子笼的外面；当组装在22℃进行时，可以得到包容一个乙醚客体分子的中性超分子笼2。

Moreover, the rotational states of coupled free and adsorbed molecules with dipolar interaction are further studied. It is shown that the orientation is significantly different from that of an isolated one due to the dipole-dipole interaction.

同时，我们也进一步探讨耦合自由与吸附分子的转动能态，发现其分子偏向与单一吸附分子的偏向有相当不同的差异性，原因是来自於分子间偶极作用的影响。

The phylogenetic analysis of Gymnothorax was reported in this paper by being based on DNA sequences of mitochondrial Cytb gene.17 species of Cytb gene full-length sequences were obtained and their length of Cytb gene was 1140bp.All sequences were analysised by using biological software, the phylogenetic tree was constructed by using three kinds of common contribution phylogenetic tree methods and the phylogeny of 17 species of Gymnothorax was deduced.

本论文采用线粒体Cytb基因为分子标记，共获得裸胸鳝属鱼类17种Cytb基因序列全长为1140bp的部分序列，应用分子生物学软件对结果进行分析，使用3种常见的建树方法：NJ法、ME法和MP法重建系统发育树，对裸胸鳝属17种鱼类的系统关系进行研究，为探讨裸胸鳝属鱼类的分子进化，确定它们之间的关系提供分子生物学方面的证据。

Further X-ray structure analysis at low resolution using molecular replacement technique with the Homarus Americanus lobster GAPDH structure as model structure shows that the subunit arragement within molecule is 222 symmentry, the molecular Q axis is parallel to crystallographic 2-fold axis b and molecular P and R axes are parallel to crystallographic a and c axes respe-ctively.

以Homarus Amercanus龙虾GAPDH结构为模型结构，应用分子置换技术进行了低分辨率Χ射线结构分析，结果表明：分子内亚基排列具有222对称性，分子Q轴平行于晶体学二重轴b，分子P和R轴分别平行于晶体学a和c轴。

The evolution of the self-organization structure for multicomponent systems containing amphiphilic moleculae. We have gotten the rule about effects of the construction of the surfactant molecula and the interaction strengths among the surfactant, oil and water moleculae on the self-organization structure after the phase separation.

研究含有双亲分子的多元系统的自组织结构演化规律，得到表面活性剂分子与水、油分子的相互作用强度以及表面活性分子的构形对分离成的自组织结构的影响规律。

The relative stabilities and probable proton transfer in isolated and monohydrated 2-hydroxyimidazole molecules have been studied in gas phase using ab initio (MP2/6-31＋G *) method.

采用从头算方法在MP2/6-31＋G*水平上研究了2-羟基咪唑分子在孤立分子和一水合物的异构体的相对稳定性和可能的质子迁移反应，分析了一个水分子的参与对2-羟基咪唑分子异构体的相对稳定性和质子迁移速率的影响，采用Monte Carlo模拟方法研究了反应体系在水溶液中反应的溶剂化效应。

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。