查询词典 fluorescence

The influence of acidity and concentration on fluorescence and absorption spectra were investigated. Using quinine bisulphate as a reference, fluorescence quantum yield of aesculetin in the condition of pH=9.32 was determined to be 0.13 at excitation wavelength 365nm.

考察了酸度与浓度对其荧光性质和吸光性质的影响，以硫酸奎宁为参比，测得秦皮乙素水溶液在pH=9.32，激发波长365nm条件下的荧光量子产率为0.13。

The influence of acidity on fluorescence and absorption spectra were investigated. Using quinine bisulphate as a reference, fluorescence quantum yield of aesculin in the condition of pH=4.96 was determined to be 0.76 at excitation wavelength 335nm, and in pH=9.40 was 0.80 at 375nm.

探讨了酸度与浓度对其荧光和吸光性质的影响，以硫酸奎宁为参比，测得秦皮甲素水溶液的两种强荧光型体的荧光量子产率，在pH=4.96，激发波长335nm条件下，荧光量子产率为0.76；在pH=9.40，激发波长375nm条件下，荧光量子产率为0.80。

The increase of fluorescence index and protein-like fluorescence signal suggested that bacteria could play an important role in the production of chromophoric dissolved organic matter.

荧光指数的增大与类蛋白荧光的产生，显示微生物在有色溶解有机质的生产上起着重要的作用。

The fluorescence intensity of these chitosan derivatives increases and decreases with the different chromophoric group in the polymers\' long-chain. The fluorescence properties of these chitosan derivatives are also changed with the different pH, solvent and concentration

首次考察了分子量为104数量级的壳聚糖衍生物的荧光性能与其侧链上的生色团、助色团的关系，以及在不同浓度、不同酸度、不同溶剂中它们的荧光性能的变化情况来源：33ddABC论文网www.abclunwen.com

Emission spectra,spatial distribution of fluorescence,relations between chromophoric dissolved organic matter fluorescence and absorption coefficient, dissolved organic carbon concentration were studied based on the measurements from December 2004 to March 2005 in Lake Taihu.

利用紫外分光光度法和荧光法测定了2004年12月到2005年3月太湖不同湖区有色可溶性有机物的吸收和荧光，分析了CDOM荧光发光光谱、空间分布及其与吸收系数、溶解性有机碳浓度之间的关系。

Chromophoric dissolved organic matter; excitation-emission matrix fluorescence spectroscopy ; fluorescence; absorption; sediment pore waters; photodegradation

有色溶解有机物；荧光激发-发射矩阵光谱；荧光；吸收；沉积物间隙水；光化学降解

Excitation-Emission Matrix Fluorescence Spectroscopy was employed to study fluorescence characteristics of chromophoric dissolved organic matter readily released from sediment particles during episodes of resuspension, and bottom waters and surface sediment pore waters were compared in all corresponding sites.

对采自厦门湾九龙江入海河口的4个沉积物样品进行了室内再悬浮模拟实验，利用荧光激发－发射矩阵光谱研究了再悬浮过程中从沉积物中释放出的有色溶解有机物的荧光特征，同时通过与相应站位沉积物间隙水和底层水的对比分析，探讨了河口近岸海域的沉积物再悬浮作用作为水体中溶解有机物来源之一的可能性。

Figure 6 Bright fluorescence of condensed nuclear chromatin appeared around circumnuclear edge of apoptotic osteoclast,nonapoptotic nuclear fluorescence showed coherent distributed.

凋亡细胞核核周呈一亮环，而未凋亡细胞核染色均一（图6）。图6 凋亡破骨细胞胞核周缘呈环状亮色，而未凋亡细胞核荧光染色均一。

To identify whether our previous founding were exist in the series of our newly established cell cultures with the same genetic background and different metastatic potentials, and to make clear what are congenerous and various traits in the chromosomal or DMA sequence levels between these cells, in this study, a combination of conventional G-banding, comparative genomic hybridization, multiplex fluorescence in situ hybridization and arm or locus-specific fluorescence in situ hybridization were used to comprehensively characterize molecular cytogenetics aberrations of the above cell cultures.

为查明我所新建立的这些具有同一遗传背景而又在肝癌的转移潜能上存在明显差异的细胞是否也具有8p的缺失，并弄清它们在其它染色体及其区段的DNA水平上有着怎样的相似和不同，这些相似与不同又有着怎样的意义，本课题联合应用G显带技术、比较基因组杂交技术、多重荧光原位杂交技术和位点或臂特异荧光原位杂交技术，对上述细胞进行细胞及分子遗传学研究，以期了解其分子细胞遗传学异常的特征、找出转移相关的遗传学标记，为探讨肝癌转移机制提供材料。

In order to do this, we get equal quantities of plasmid pSCA1-M, pcDNAM and pSCA1 transfected vero cells. After 48 hours, we observed the presence of special green fluorescence in cytolymph in both of pSCA1-M and pcDNAM groups. However, this fluorescence is absent in the negative pSCA1 group.

分别取等量的重组质粒pSCA1-M、常规IBV M基因DNA疫苗质粒pcDNAM、空载体pSCA1转染Veto细胞。48h后经间接免疫荧光试验观察发现，pSCA1-M以及pcDNAM转染组细胞浆均可见特异性亮绿色荧光，pSCA1空载体组无荧光为阴性。

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。