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Of the three binding modes, the intercalative binding is thought to be the strongest binding because it is a type of binding caused by the intercalative molecule plane sandwiched between the aromatic heterocyclic and base group pairs of DNA.

本论文的主要目的是在研究鬼臼金属配合物和铁/锰原子簇化合物与DNA相互作用的基础上，采用紫外光谱、荧光光谱、凝胶电泳和粘度测量等多种研究手段研究了其与DNA的相互作用。

Of the three binding modes, the intercalative binding is thought to be the strongest binding because it is a type of binding caused by the intercalative molecule plane sandwiched between the aromatic heterocyclic and base group pairs of DNA.

本论文的主要目的是在研究鬼臼酰肼金属配合物和铁/锰原子簇化合物与DNA相互作用的基础上，采用紫外光谱、荧光光谱、凝胶电泳和粘度测量等多种研究手段研究了其与DNA的相互作用。

It is shown that the reaction U+CO→CUO with a long-lived intermediate complex has no threshold energy, which agrees with the potenlial surface. When the collision energy is greater than 418.4 kJ/mol, the intercharge reaction increases, until the CUO molecule will decompose into U, C, O completely, and these reactions have threshold energy.

结果表明：在碰撞能低(15kJ/mol)时可以生成长寿命络合物CUO(X^3A)，并且该络合反应是无阈能反应；碰撞能大于418.4kJ/mol后，先后出现置换产物UO和UC；随着碰撞能进一步增大，CUO分子将被完全碰散成U，C和O原子，而且反应U+CO(0， 0)→UO+C，U+CO(0， 0)→UC+O和U+CO(0， 0)→U+O+C是有阈能反应。

The motor molecule forms bipolar thick filaments that interdigitate with thinner actin filaments in the saromere, forming the basic contractile unit of muscle.

由于肌球蛋白和肌动蛋白的作用，粗丝和细丝相对滑动引起肌肉的收缩。

The motor molecule forms bipolar thick filaments that interdigitate with thinner actin filaments in the saromere, forming the basic contractile unit of muscle.

在所有的分子马达中，关于肌球蛋白的研究最多。肌球蛋白是肌肉收缩的关键成份，由它们形成的双极粗丝在肌节内同肌动蛋白细丝交叉对插，构成一个收缩单元。

Here, it is well-known that a photoexcited ketone undergoes an intersystem crossing to a triplet state and then abstracts a hydrogen atom from an organic molecule.

在这里，它是人所共知的一个photoexcited酮经历了一间通道的一个三重态，然后摘要一氢原子由一个有机分子。

Chemically, fluoroquinlones are an amphoterics molecule processing major ionizable groups, a basic piperazine amine and acidic carboxyl. The form of drugs was greatly affected by the acidity in aqueous solution. Thus the effect of pH values in aqueous solution on the fluorescent properties of fluoroquinolones was studied in details, the spectral properties of each form was characterized. It was found that the fluoroquinolones exhibit weak fluorescence in strong basic solution.

氟喹诺酮类药物分子结构中既有羧基，又有哌嗪氨基，它们所处环境的pH值对其存在型体有很大影响，因此我们详细研究了水溶液的pH值对该类药物光谱特性的影响，并对于各型体光谱特征进行归属，发现强碱性溶液中其发光较弱。

Isoelectric point The value of pH in a medium at which a molecule has no electric charge.

等电点：是当分子处于电中性时的该分子溶液所具有的 pH 值。

All of the possible 21 isomers for C_77N~+, an isoelectronic molecule of C_78, were investigated by the INDO methods based on C_78(C_2V).

用INDO系列方法对C78(C2V)的等电子体C77N+的所有21种可能异构体进行系统的理论研究。

A compound, which had isoindole unit in its molecule with strong fluorescence intensity, would form when the polymer particles were reacted with primary amine.

该聚合物颗粒本身的荧光很弱，但可与伯胺作用，形成具有强荧光的异吲哚类化合物。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。