查询词典 fluorescence

The interaction between diammonium glycyrrhizinate and bovine serum albumin was studied in physicological solution by spectroscopic methods including fluorescence spectra and UV visible absorption spectra. Synchronous fluorescence and three-dimensional fluorescence spectra were used to investigate the conformation change of bovine serum albumin due to the addition of diammonium glycyrrhizinate.

在模拟人体生理条件下，用常规荧光光谱和紫外－可见吸收光谱研究甘草酸二铵和牛血清白蛋白的相互作用机制，并利用同步荧光光谱和三维荧光光谱研究了药物对牛血清白蛋白构象的影响。

The study on the photoinhibiton of Pistachio shows: the exposure of Pistacia vera seedlings to high irradiance induced lowering of apparent quantum yield , maximal fluorescence , minimal fluorescence , variable fluorescence , photochemical efficiency of PS Ⅱ, and photochemical quenching , but raising the Non-photochemical quenching , this indicates that high irradiance reduces the quantities of oxidized Q〓, which depresses the ability of electron transport from Q〓 to Q〓, and lowers the electron transport rate and the photosynthesis rate.

对&光抑制&研究表明，强光照射后，叶片表观量子效率、最大荧光、初始荧光、可变荧光、光化学效率、和光化学猝灭系数下降，而qN升高，说明强光处理降低了Q〓的氧化态数量，使Q〓→Q〓传递电子的能力下降，进而导致了电子传递速率和光合速率的下降。

Particularly, the neutral anion fluorescence chemical sensor uses cholic acid molecules as the molecule frame, and introduces a neutral thiourea or ureido to the positions of a 3 bit carbon atom and a 24 bit carbon atom to be used as a bonding unit; a fluorescence chemical functional group is introduced to the positions of the 3 bit carbon atom and the 24 bit carbon atom or to other positions and used as a signal unit, and then a neutral anion fluorescence chemical sensor is synthesized.

具体而言是以胆酸分子为分子骨架，在其3位碳原子和24位碳原子上引入中性硫脲或脲基，作为键合单元；在3位碳原子和24位碳原子上或其他位置引入具有荧光化学官能团，作为信号单元，合成中性阴离子荧光化学传感器。

Results showed that there were the morphological changes of mitochondria, such as vacuolization, degeneration and cristae swelling or disappearance, in HT-29 cells treated by C2-ceramide for 24 hours. Under the fluorescence microscope, mitochondria of apoptotic cells aggregated and emitted red fluorescence, however, mitochondria of normal cells emitted green fluorescence. The mitochondrial membrane potential began to decrease after 6 hours in HT-29 cells treated with C2-ceramide in time and dose dependent manner.

结果显示C2-神经酰胺作用HT-29细胞24小时，线粒体发生空泡化、变性、嵴肿胀或消失等形态学改变；此时荧光显微镜下可观察到线粒体聚集，发出红色荧光，而正常细胞线粒体发出绿色荧光。C2-神经酰胺作用细胞6小时，线粒体膜电位即开始降低，呈时间-剂量-效应关系。

Based on studies on the characteristics of ultraviolet-visible absorption spectra, ESR and ~(13)C NMR spectra, the three dimensional fluorescence spectra of natural and treated ambers with fluorescence are studied by using the three dimensional fluorescence spectrophotometer.

基于紫外可见吸收光谱、ESR和13C NMR谱的研究基础，以三维荧光分光光度计为主要测试分析方法，对具有荧光性质的天然与处理琥珀的三维荧光光谱进行了剖析。

POMs and deys are still maintained integrallty.AFM exhibits the films is even.The thickness of each layer is about 1.25nm. The AFM images reflect that there are some protuberances on the outer surface layer of the film, which due to the aggregates of spherical structure PMo12. Cyclic Voltammograms reflects the redox potentials of dye in multilayer shifts towards more positive values than pure dye multiplayer which may be explained by charge transfer from dye to POM. Fluorescence spectra show that polyoxometalates caused the fluorescence decay of dyes, which maybe used as fluorescence sensors.

UV-VIS说明复合膜均匀生长； IR 光谱、XPS能谱研究结果表明，紫外光照前后，膜中多酸/染料分子间没有发生显著的光化学反应，各组分的结构仍然保持；原子力显微镜显示，膜的外表面是均匀的，每一个双层厚度大约是1.25nm，膜表面的隆起，可能是多酸阴离子簇堆积所引起；循环伏安测定结果表明，由于多酸阴离子的影响，有机染料的氧化还电位发生了正的偏移，反映出复合膜中染料分子与多酸阴离子间发生了荷移相互作用，导致染料分子失去部分电子而使氧化性略强；荧光光谱研究结果表明，多酸阴离子可以有效地引发荧光染料的荧光淬灭，这为多酸在荧光传感器方面的应用提供了有价值的信息。

The direct interaction of copper ion with CuZnSOD was studied by fluorescence spectroscopy, and a type of 1:1 stable complex has been generated, which was certified by the quenching experiment of intrinsic fluorescence. The process of the generated complex shown by dynamic analysis of fluorescence quenching, consisted of two steps, in which the first step was a quick association process of double molecules to generate a loose complex, and the second step was a slow process of single molecule, where the loose complex was isomerized into the compact complex.

通过荧光光谱方法研究了这种相互作用，内源荧光的猝灭实验表明Cu(上标 2+)与CuZnSOD形成1：1型稳定配合物；荧光猝灭的动力学分析表明配合物形成过程由两个独立步骤完成：第一步是双分子快速缔合过程，形成了结合疏松的配合物，第二步是单分子慢速过程，即松散的配合物&异构化&成为结合紧密的配合物。

The direct interaction of copper ion with CuZnSOD was studied by fluorescence spectroscopy, and a type of 1∶1 stable complex has been generated, which was certified by the quenching experiment of intrinsic fluorescence. The process of the generated complex shown by dynamic analysis of fluorescence quenching, consisted of two steps, in which the first step was a quick association process of double molecules to generate a loose complex, and the second step was a slow process of single molecule, where the loose complex was isomerized into the compact complex.

通过荧光光谱方法研究了这种相互作用，内源荧光的猝灭实验表明Cu2＋与CuZnSOD形成1∶1型稳定配合物；荧光猝灭的动力学分析表明配合物形成过程由两个独立步骤完成：第一步是双分子快速缔合过程，形成了结合疏松的配合物，第二步是单分子慢速过程，即松散的配合物&异构化&成为结合紧密的配合物。

The result showed that the maximum chlorophyll index was more suitable for the estimation of chlorophylla concentration in the water body of Taihu Lake than the fluorescence line height in the inversion analysis for the estimation of chlorophylla concentration using MERIS fluorescence parameters, and the normalized fluorescence height (NLHR681/R665) had the best fit with the measured chlorophylla concentration.

结果表明：MERIS荧光参数中最大叶绿素指数较基线荧光高度更适合太湖水体叶绿素a浓度的反演；归一化荧光高度与实测叶绿素a浓度间的拟合效果最好。

Methods pna conjugated fish (fluorescence in situ hybridization)-fitc was performed on paraffin sections from melanoma,melanoma metastases and common naevi, respectively. telomere mean maximum diameter, area and number per nuclear area were calculated by image analysis on fluorescence images elaborated through confocal laser scanning microscope and fluorescence microscope.

应用肽核苷酸探针标记荧光原位杂交—荧光素异硫氰酸法检测黑色素瘤、转移黑色素瘤及黑色素痣石蜡切片中的端粒，以荧光显微镜、激光共聚焦显微镜生成图像，并详细记录细胞核平均面积、端粒数目、端粒面积。

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。