荧光素

The interaction between three small flavoind drug molecules, which are apigenin, galangin and genistein, and BSA is investigated with fluorescence spectroscopy using the drug's quenching on the endogenous fluorescence of serum albumin.

采用荧光光谱法，利用药物对牛血清白蛋白自身内源荧光的猝灭，研究了芹菜素、高良姜素和染料木素这三种黄酮药物小分子与牛血清白蛋白分子间的相互作用，研究发现药物分子与牛血清白蛋白分子之间发生了有效的静态猝灭。。。

There are decreases in fluorescence signals except the stablility for Prochlorococcus and increasing abruptly for picoeukaryotes in phycoerythrin fluorescence.

除原绿球藻的藻红素荧光基本不变、微微型真核浮游植物的藻红素荧光大幅增加外，其余荧光信号均发生不同程度的减少。

There are decreases in fluorescence signals except the stabllllty for Prochlorococcus and increasing abruptly for pieoeukaryotes in phycoerythrin fluorescence.

除原绿球藻的藻红素荧光基本不变、微微型真核浮游植物的藻红素荧光大幅增加外，其余荧光信号均发生不同程度的减少。

By using fluorescence spectrophotometry method,a systematic study was conducted to determine the effect of cadmium and lead ion stress on reactive oxygen species in creeping bent Agrotis stolonifera leaf tissue.

通过2种重金属离子和抗霉素A处理匍匐翦股颖Agrotis stolonifera幼苗叶片，利用2，'7'-二氯荧光黄双乙酸酯溶液对重金属胁迫和抗霉素A处理后叶片中产生的过氧化氢(H2O2)反应形成具荧光物质DCF的特性，用荧光光度分析法分析了叶片中H2O2产生与积累规律。

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。

objective effects of plant tannins,chebulinic acid and tellimagrandin i on chemically induced hemoglobin synthesis in k562 cells were investigated.methods the hemoglobin synthesis situation was assayed with benzidine staining.erythroid antigens glycophorin a expression on the surface of k562 cells was labeled by direct immunofluorescence using fluorescein isothiocyanate-conjugated anti-gpa antibodies.then flow cytometric analysis was performed to detect gpa expression levels on surface of the cells.results both chebulinic acid and tellimagrandin i could inhibit the hemoglobin synthesis of butyric acid and hemin-treated k562 cells in a concentration-dependant manner.however,the ba-induced k562 cells were more sensitive to two tannins than heroin-induced cells.conclusion chebulinic acid and tellimagrandin i have inhibitory effect on the erythroid differentiation.

目的 研究可水解单宁诃子酸和特里马素i对氯化高铁血红素和丁酸钠诱导k562细胞红系分化的影响。方法四甲基偶氮噻唑蓝法分析诃子酸和特里马素i对k562细胞生长的影响，联苯胺染色法检测血红蛋白合成情况，应用免疫荧光和流式细胞术检测血型糖蛋白a在细胞表面的表达。结果诃子酸和特里马素i在0.04～0.09？mmol／l浓度下均可显著抑制k562细胞的生长增殖。2种单宁化合物(0.002～0.01？mmol／l)可显著抑制丁酸钠诱导的k562细胞血红蛋白合成，2种单宁化合物(0.01～0.05？mmol／l)还可显著抑制氯化高铁血红素诱导的血红蛋白合成，特里马素i(0.01？mmol／l)还抑制丁酸钠诱导的gpa在细胞表面表达。结论诃子酸和特里马素i对红系分化有抑制作用。

Fluorescence spectra, absorption spectra and protonation properties of Chinese herbal medicine—Cortex Fraxini and its effective components—aesculin and aesculetin have been studied in this thesis. Based on the spectroscopic properties of aesculin and aesculetin at different pH values of their water solutions, a fluorescence method for the determination of aesculin and aesculetin in Cortex Fraxini was developed.

本文详细研究了中药秦皮及其有效成分秦皮甲素和秦皮乙素的荧光光谱与吸收光谱，深入探讨了秦皮甲素和秦皮乙素的光谱性质和质子化作用，制定了秦皮药材中秦皮甲素和秦皮乙素的荧光分析方法。

In order to examine the influence of higher ionic strength on the interaction between QDs and avidin, the fluorescence spectra of free CdTe and CdTe-avidin solution are recorded as a function of increasing NaCl concentration.

实验还考察了盐浓度对QDs-亲和素体系的影响情况，结果发现随着盐浓度的增大，QDs-亲和素体系的荧光峰位逐渐蓝移，而单独量子点的荧光峰位基本不变，这说明盐浓度的增加削弱了CdTe量子点与亲和素分子之间的结合作用。

LC3-FITC had been used to monitor autophagy by immunofluorescence. It showed that there are a high level of LC3 puncta in HCQ+DOX or BAF +DOX treated cells, and in rapamycin treated cells, moderate level in HCQ, BAF, or DOX singly treated cells, and low level in 3-MA+DOX, and there was diffuse fluorescence in untreated or 3-MA treated cells.

内源性LC3免疫荧光染色显示，羟氯喹+阿霉素、BAF+阿霉素及雷帕霉素处理组MM细胞胞浆可见大量颗粒状荧光，羟氯喹、BAF、阿霉素单用组仅有中等量颗粒状荧光，而3-MA及3-MA+阿霉素组胞浆荧光信号基本呈弥散分布，类似于未处理对照组。5。

Methods The telomerase activity of Jurkat cells was examined by modified Krupp TRAP assay.

采用改良的Krupp荧光素标记的端粒重复扩增方法检测HHT对Jurkat细胞端粒酶活性的影响。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐