查询词典 fluorescence

The characters of powder are connected with the inside structure and synthesize-technics of materials. In this paper, we want to search a optimize technics of materials synthesizing, and prepare a kind of nanosize powder which shape like ball and have good dispersed character. At the same time, we want to obtain a bridge structure of Zn-O-Tb through dopping of Tb, which can achieve efficient energy transfer from ZnO hosts to excited states of dopants, The doped powder can eradiate blazing green light because of efficient emission buildup from dopants and ZnO hosts, and the powder can emission a pure light. And we want to research the structure in doped ZnO for the further research of low-tension fluorescence of ZnO.

粉体的这些特性无不与其内部结构特征和制备工艺有关，基于这些，本文的实验目的是希望能寻找一种合适的制备方法和优化工艺，制备分散性好的球形纳米颗粒，希望改善其表面形貌，同时，通过铽掺杂，希望得到一种Zn-O-Tb桥联结构，实现氧化锌基体向铽发光中心的能量传递，希望铽中心特征发射和氧化锌绿光发射能有效叠加增强，改善粉体的单色性，制备出好的复合粉体，分析清楚其结构，从而为后续低压荧光特性研究作准备。

Objective To establish Atomic Fluorescence Spectrometer and Atomic Absobing Spectrophotometer method for the determination of As 、 Hg 、 Pb 、 Cd 、 Cu remain content in Flowers of Eriobotrya japonica Thunb.

目的：建立原子荧光光谱法和火焰原子吸收光谱法测定枇杷花中重金属残留量的方法并比较不同产地枇杷花中 As 、 Hg 、 Pb 、 Cd 、 Cu 等五种元素的含量。

At the time point of fixation 10 days, fluorescence labeling surface was little and shape was erose.

在固定10天，荧光标记面积少，形态不规则。

In this paper, an escherichia coli-saccharopolyspora erythraea shuttle vector containing the erya promoter region was constructed using the enhanced green fluorescent protein gene as a reporter. the shuttle plasmid was transformed into sac.erythraea a226 and streptomyces lividans jt46 by peg mediation, respectively. fluorescence microscopy confirmed that the egfp was expressed in both strains.

本文克隆了erya基因的启动子perya，以绿色荧光蛋白基因为报告基因，构建了大肠埃希菌-糖多孢红霉菌穿梭型质粒。peg介导原生质体转化法将穿梭型质粒分别转入糖多孢红霉菌a226与变铅青链霉菌jt46，荧光显微镜检测发现，此启动子在两菌株中都具有功能。

Being stimulated with LPS 1μg·ml-1, RAW 264.7 cells were observed under LASER confocal microscopy. Erythrine P65 subunit of NF-κB aggregated at nuceluses, which made Erythrine fluorescence of nuceluses much stronger than that of endochylema.

LPS 1μg·ml-1干预RAW264.7细胞后，激光共聚焦显微镜下观察结果显示，红染的NF-κB P65亚基聚集于细胞核，使胞核红色荧光明显强于胞浆。

The effect of four metal ions Cu2+,Ni2+,Zn2+ and Co2+ on the interaction between bovine serum albumin and esculetin extracted from a Traditional Chinese Medicine fraxinus chinensis bark,was investigated by means of UV and fluorescence spectroscopy.

以荧光光谱、紫外光谱技术研究了传统中药有效成分七叶内酯与BSA在金属离子Cu2+、Ni2+、Zn2+和Co2+分别共存时的相互作用。

The long wave ultraviolet grass green fluorescence function material is synthesized with the p-toluensulfonyl chloride and o-amino benzoic acid as raw materials,pyridine as solvent,and sodium ethoxide as activator.

缑卫军，刘新奇，紫外长波草绿荧光功能材料的合成研究以对甲苯磺酰氯和邻氨基苯甲酸为原料，吡啶为溶剂，乙醇钠为催化剂，合成紫外长波草绿荧光功能材料。

Total mercury and methyl mercury concentrations were analyzed by cold vapor atomic fluorescence spectrometry and aqueous phase ethylation,GC separation,and CVAFS detection.

2006年1~12月，每月采集乌江流域梯级水库入出库河流水样，用两次金汞齐-冷原子荧光光谱法和蒸馏-乙基化结合GCCVAFS法测定了水中总汞和甲基汞的浓度。

Rationale: Fibered confocal fluorescence microscopy is a new technique that produces microscopic imaging of a liing tissue through a 1-mm fiberoptic probe that can be introduced into the working channel of the bronchoscope.

原理：纤维共聚焦荧光显微镜这项新技术，是通过将1mm的纤维光学探头插入支气管镜的操作管道，进行活体组织的显微成像

Additionally, SHG signals reflect the distribution of fibrillar collagen and 2PEF imaging reveals the elastic component of the trabecular meshwork and the fluorescence of metabolically active cells.

此外，SHG信号反映了纤维胶原的分布，2PEF影像显示了小梁网的弹性成分和代谢活跃细胞的荧光。

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。