查询词典 fluorescence

The results show that, the chalcone moiety of this CD derivative was located in the less polar CD cavity in the aqueous solution and a"self-inclusion"complex was formed which gave a higher fluorescence emission.

并对上列体系在外界环境极性变化过程中多元配合物的形成和解离；不同醇类化合物因极性与尺寸上的差别而给包结行为带来的影响、进而显示出光谱行为的变化等进行了深入的研究和讨论。

Methods Determination of DNJ by derivatization with 9-fluorenylmethyl chloroformate and followed by reversed-phase high-performance liquid chromatography and a fluorescence detector; the inhibitory curves on α-glucosidase at the enzymatic level and the activities to α-aglucosidase in vitro were observed in the everted sac experiment.

以氯甲酸药甲酯柱前衍生RP-HPLC荧光检测法对DNJ进行分析；在酶水平测定样品的α-糖苷酶抑制曲线，在离体水平用反转肠囊实验测定样品的α-糖苷酶抑制活性。

WT, antisense-transgenic lines T2-8 and sense- transgenic lines T2-7 of tomato were used to measure the fatty acid composition of thylakoid membrane, photosynthetic and chlorophyll fluorescence parameters, chloroplastic reactive oxygen species and activities of antioxidant enzymes under salt stress.

以野生型，转反义番茄叶绿体ω-3脂肪酸去饱和酶(LeFAD7)基因株系T2-8和转正义LeFAD7基因株系T2-7为试材，测定了类囊体膜脂脂肪酸组成，盐胁迫后的光合参数，叶绿素荧光参数和叶绿体活性氧清除酶活性。

The presence of the t(15;19) chromosomal translocation in the chondroid component was confirmed by fluorescence in situ hybridization analysis and immunohistochemical staining, indicating mesenchymal transdifferentation of the tumor.

荧光原位杂交实验和免疫组化染色证实其软骨样成分发生了t(15；19)染色体易位，由此表明该例肿瘤发生了间叶组织转分化。

Chromophoric dissolved organic matter solutions at different concentrations were prepared to study the effects of CDOM concentration on excitation emission matrix spectrum and synchronous fluorescence spectrum.

用自制的海水有色可溶性有机物干粉配制不同质量浓度的水溶液，研究其对三维荧光光谱和同步荧光光谱的影响。

Results The IC50 of SPG-Rg3 was (155.7±0.71) mg·L-1,when the concentration of SPG-Rg3 was arranged from 37.5 to 600.0 mg·L-1,the growth inhibitory rate of MCF-7 cells was higher following the increase of its concentration,the cell growth was greatly inhibited compared with control group(P.05); cell cycle was changed,the cell number of S period increased compared with control group(P.01),the cell number of G2/M period decreased compared with control group(P.01),in experiment group there was an apoptotic apex before G1 apex,and the number of apoptotic cells increased; most of cell nuleus in SPG-Rg3 (150 mg·L-1)experiment group appeared yellow or chrysoidine fluorescence,contracted,beaded and crescent; the result of immunocellularchemical staining of caspase-8 indicated that caspase-8 protein had no expression in control group,but stronger expression in SPG-Rg3 group.

结果：SPG-Rg3 IC50为（155.70±0.71） mg·L-1，当SPG-Rg3浓度在37.5~600.0mg·L-1时，MCF-7细胞的生长抑制率随SPG-Rg3浓度的增加而增大，与对照组比较，细胞增殖受到明显抑制（P.05）；MCF-7细胞的生长周期也发生变化，S期细胞数增加，明显高于对照组（P.01，G2/M期细胞数则明显少于对照组（P.01；并且在G1峰前出现明显的凋亡峰，凋亡细胞数增加。

Study on the changes of chlorophyll fluorescence parameters in Cinnamomum japonicum var.

［目的］探讨NaCl胁迫对普陀樟叶绿素荧光参数的影响。

As the DDP group A549DDP cells were treated with IC10 of cisplatin for 48 hours. As the DDP＋Rh2 group A549DDP cells were treated with IC10 of cisplatin and IC5 of gensenoside Rh2 for 48 hours. As the controlling group A549DDP cells were not treated with any kinds of drugs. Changes in cellular morphology were observed by fluorescence microscopy. Peak value apoptosis of A549DDP cells were inspected by flow cytometry. State of PTP was evaluated by ultraviolate spectrofluorometer. Changs of calcium in cells and membrane potential of mitochondrion were determined by flow cytometry. Release of cyt-c from mitochondrion with westton blot Radiative activity of〓Tc-MIBI ingested by cells was measured withγcounter. Results: IC50 of cisplatine to A549 cells was 24uM.

以无毒浓度的Rh2单独作用于A549DDP细胞作为Rh2组，以低效浓度的顺铂单独作用于A549DDP细胞作为DDP组，以无毒浓度的Rh2和低效浓度的顺铂联合作用于A549DDP细胞作为Rh2+DDP组，作用时间为48小时，以不加药物干预作为对照组，Hoechst33258染色荧光显微镜下观察细胞形态的变化，流式细胞仪检测细胞凋亡峰；紫外光分光光度计检测线粒体PTP开放情况，流式细胞仪检测细胞内钙离子浓度及线粒体跨膜电位的变化，Westton blot检测线粒体内细胞色素C释放情况及Caspase-3的活性，γ计数仪检测细胞摄取〓Tc-MIBI放射性活性。

The dissertation is focused on the research of organic supramolecular self-assembly and molecule folding. It consists of four parts. In the first part, three new model molecules for investigating intramolecular coaggregation behavior have been designed and synthesized. Fluorescence studies reveal that intramolecular coaggregation of these molecules take place with the increase of the solvent polarity because of hydrophobic-lipophilic interaction .

本论文主要对有机超分子自组装和分子折叠做了一些研究，共分四个部分：第一部分中，我们设计并合成了一个新的研究分子内自簇集的模型，用荧光光谱法对该模型进行了研究，研究表明，在促簇能力较强的溶剂体系中，这一类模型分子可在疏水亲脂作用的驱动下发生分子内自簇集而形成卷曲的构象。

Aim To find a new method that the trace Ge in the coix is determined with fluorescence spectrophotometry.

目的 以荧光分光光度法为基础建立测定薏米中痕量锗的新方法。

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。