查询词典 fluorescence

The excited-state intramolecular proton transfer tautomerism reaction of 6-methyl-4-hydroxy pyri-midine monomers and dimmers was investigated by the ab initio method with the self-consistent reaction field with Tomas's polarized continuum mode and CIS theories at HF level on the basis of 6-311+G* and 6-31G basis set. By studying the potential energy surface, it was found that the monomer's ground-state proton transfer process together with the excited-state proton transfer process is a molecular system of four energy level, but dimmers were not, which can be used to explain the fact that UV-visible absorption and fluorescence spectra of monomer and dimers all corresponded to quinoid.

采用 ab initio HF理论的组态相关CIS方法和连续溶剂模型PCM，分别在6-311+G*和6-31G水平上研究了6-甲基-4-羟基嘧啶单体及二聚体激发态质子转移的异构化反应；对其反应势能面的研究发现，单体基态和激发态的异构化反应一起可以形成四能级的分子电子体系，而二聚体的却不能，由此解释了单体和二聚体的紫外吸收光谱和荧光发射光谱均对应于酮式构型的原因。

It made the original fluorescence logging and gas logging reflect the real formation oil and gas information uncorrectly.

使原有的荧光、气测录井不能准确反映地层真实油气信息。

Fe and DNA can quench the fluorescence intensity of LMX by static quenching style receptively.

Fe、DNA均能以静态猝灭的方式猝灭LMX分子的荧光。

The fluorescence quenching data were analyzed according to Stern-Volmer equation and Lineweaver-Bark double reciprocal equation.

用Stern-Volmer方程和Lineweaver-Burk双倒数函数处理实验数据。

A method for the determination of BSA based on the quenching of BSA fluorescence on adding PS and a method for the determination of PS based on the enhancement of PS on adding BSA were developed. The experimental data were processed by the Stem-Volmer equation and Lineweaver-Burk double reciprocal equation.

在不同的pH条件下，酚藏花红与蛋白质的反应导致了蛋白质荧光猝灭及酚藏花红的荧光增强，其荧光猝灭值与酚藏花红的浓度成正比，可用于酚藏花红的分析测定；而酚藏花红荧光增强值与蛋白质浓度成正比，又可用于蛋白质的分析测定。

The result shows: at different temperatures the outcomings obtained in determining dissociation constants with such two theories can be seen effective, but the doubly reciprocal curves of quenching equation are not conformed to quenching curves based on dynamic and static quenching mechanism as those of fluorescence enhancement.

通过荧光和紫外方法研究盐酸左氧氟沙星、氟罗沙星、加替沙星和沃氟沙星四种喹诺酮类药物与人血清白蛋白的作用，在不同温度下对荧光加强和猝灭理论公式的等价性和精细差异进行了比较，结果表明：在不同温度下两种理论公式尽管在求取解离常数上所得结果都可视为有效，但猝灭方程的双倒数图反而不及荧光加强方程的双倒数图与体现动态、静态猝灭机理的猝灭曲线一致。

The increase in fluorescence intensity and the red shift in emission peak were the indicators of enzyme inactivation.

萤光强度的增加和最大发射峰位的红移是酶变性失活的一个指标，酶活力的变化快于酶分子整体构象的变化，说明麦芽酸性磷酸酶的活性部位位於柔性较大的区域。

The conjugation of avidin leads to a red shift and an intensity reduction in the fluorescence emission spectra of nanocrystals.

实验中通过光谱的变化证实了CdTe量子点与亲和素之间的结合反应。

The VELScope emits a cone of light into the mouth that excites molecules in cells causing them to absorb the light energy and reemit it as visible fluorescence.

VELScope向口腔发射圆锥型光束，激活细胞内的分子，使其吸收光能，变成可视荧光。

Photosynthesis, Chl fluorescence, Gas Exchange, Root research solutions, Soil Moisture Content, Time Domain Reflectometry

56光合作用，叶绿素荧光，气体交换，根系研究解决方案，土壤水分，时域反射仪

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新