查询词典 fluorescence

At 0-60 ℃, the maximum fluorescence intensity of GCS-EPF decreased on heating and the relationship between fluorescence intensity and the change of temperature was linear; At pH=0-13.5, its fluorescence intensity increased with basification and completely disappeared at very acidic pH.

结果表明，修饰后水溶性壳聚糖的水溶液、固体粉末和薄膜在520 nm附近具有较强的荧光发射，其荧光强度不仅在0-60 ℃时对度有较快敏感响应，同时在pH=0-13.5时对pH也有较快敏感响应，具有双重敏感响应，因此可将其作为温度荧光探针和pH荧光探针的高分子材料。

Sunset clouds has comfortable pragmatic simple furniture within the red floor house , living room white hangs on the wall to oil painting having personage or scenery, bedding has the bilayer milk white quilt on bedroom 180 CM * 200 CM bed , both sides readjusts oneself to a certain extent the desk lamp having two Bixa orellana pole light yellow modelled after antiques charpie lamp shade to may adjust luminosity on the head of a bed on the bedside cupboard , the bedroom *allpox gushes the coating material blue seabed pattern having fluorescence, the queen who puts out the light in the evening may issue fluorescence , fluorescence is a dolphin and a group of fingerling.

晚霞红地面的屋内有简单舒适实用的家具，客厅白色墙上挂有人物或风景的油画，卧室180CM*200CM床上铺垫有双层奶白色被子，床头两旁床头柜上放有两盏红木仿古支杆淡黄绒布灯罩可调节光度的台灯，卧室的天花喷有荧光的蓝色海底图案的涂料，晚上熄灯后可发出荧光，荧光是一个海豚和一群小鱼。

CWhen the fusion protein was co-culture with nematode,the analysis of fluorescence microscope showed the digestive system and the coelom of nematode could be detected green fluorescence, and the fluorescence intensity was time-and protein concentration-dependent.

其三，融合蛋白喂食线虫发现蛋白进入其整个消化道及其原体腔，且与喂食时间与蛋白浓度呈正相关关系。

The results indicate that the weak election-withdrawing group 4-hydroxymethyl in 4-position of pyridine in 4-HMDPA could weaken the fluorescence intensity of the lanthanide complexes. The contradistinctive experimental results show that the fluorescence intensities of these complexes are related to pH value of the aqueous solution and the dipole moment of solvent molecule: in the neutral aqueous solution,the fluorescence intensities of these complexes were strongest,while the less the dipole moment was,the stronger the fluorescence intensity was.

结果表明，在吡啶4位引入弱吸电子基团4-羟甲基会减弱稀土配合物的荧光强度；在水溶液中稀土配合物与溶液的pH值有着密切的关联，中性水溶液中荧光强度较大；分子偶极矩较小的溶剂中稀土配合物荧光强度较强。

Pyronine B adheres to on the surface of CdS and prevents CdS aggregating, which leads to the decrease of fluorescence quantum yield of CdS. Fluorescence resonance energy transfer happens from CdS to Rhodamine B, Butyl rhodamine B and Rhodamine 6G, respectively. There is a higher FRET efficiency between CdS and Neutral red with the value being 0.282. Moreover, coupling reaction between -NH_2 of Neutral red and -COOH of CdS -TGA leads to red shift of CdS fluorescence spectrum. The reaction also occurs between Safranine T and CdS. At the same time, the Fluorescence of ST is quenched by forming ST -CdS ground state complex. Chapter 6, CdS QDs modified by chitosan and polyethyleneimine can be quenched by Cu~(2+). According to the experimental result, we develop the novel sensor for Cu~(2+).

研究结果，吡啰红与CdS之间作用形式是染料聚集在CdS的表面使得CdS不易聚集，但同时也降低了CdS的发光的量子效率；罗丹明B、罗丹明6G、丁基罗丹明B均与CdS之间存在能量转移，位阻效应使得能量转移效率最高的BRhB的相对荧光强度增大最小；中性红与CdS的能量转移效率更高，同时推测可能使CdS-TGA上的-COOH与部分NR的-NH_2发生偶联导致粒子变大而发生荧光光谱的红移；番红花红与CdS是相互荧光猝灭，可能是ST的-NH_2与CdS-TGA上的-COOH发生偶联使得纳米粒子变大以及二者形成基态复合物的共同作用的影响。

To investigate the fluorescence dynamic change of protoporphyrin IX in bladder carcinoma cell induced by 5-ALA and the influence of 5-ALA concentration and pH on fluorescence of PpIX. 2. To discuss the biodistribution and express of PpIX in bladder wall of different lesions by method of instilling of 5-ALA into bladder cavity. 3. To discuss the clinical value of the fluorescence diagnosis in early detection of bladder cancer and the radicality of bladder tumor resection under fluorescence cystoscopy.

本研究目的：1了解5-ALA诱导膀胱癌细胞内生原卟啉IX荧光随时间的动力学变化及5-ALA的浓度、pH值对产生PpIX荧光的影响。2通过膀胱灌注5-ALA探讨其所诱导内生PpIX荧光在膀胱上皮中分布及不同病变表达上的差异。3探讨5-ALA诱导荧光膀胱镜检对发现早期膀胱癌的临床应用价值及在荧光膀胱镜下膀胱肿瘤电切治疗的彻底性。

In this thesis, the resonance fluorescence spectra of a A-type three-level atom is calculated, which is driven by two bichromatic fields having the same difference of the frequency. In addition, the influence of the relative phase difference on the fluorescence spectra are considered. It is found that the fluorescence spectra of the atom are deeply depend on the relative difference and the appearance and cancellation of the fluorescence are obtained by changing the relative phase difference.

文中以具有相同频差的两个双色场驱动下的三能级Λ型原子为模型，计算了其共振荧光谱，考虑了两个双色场的相对相位差对谱线的影响，结果表明：原子的荧光谱强烈地依赖于驱动场的相对相位差，可以利用相对相位差的改变对荧光的产生和抑制加以操纵。

To establish new methods for highly sensitive time-resolved fluorescence bioassay, several new lanthanide fluorescence complexes were synthesized and used for the preparations of nanometer-sized lanthanide fluorescence biolabels. Novel lanthanide fluorescence nano-biolabels are uniform (25-55 nm in diameters),strongly fluorescent with long fluorescence lifetime, highly photostable and biocompatible.

中文摘要：本项目以时间分辨荧光生物分析新方法的建立与应用为研究目的，在合成出几种稀土荧光配合物的基础上，建立了几种新型强荧光性纳米稀土荧光生物标记材料的可控制备方法，生物标记方法及其在时间分辨荧光免疫分析中的应用方法。

The results of its intrinsic fluorescence spectroscopy and fluorescence phase diagram showed that when the guanidine hydrochloride concentration in denaturation solution was about 1.0 mol/L, there existed a partially folded intermediate of Bacillus amyloliquefaciens a-amylase during its unfolding procedure, which followed a three-state model; the result of its fluorescence probe showed that when the guanidine hydrochloride concentration in denaturation solution was about 1.0 mol/L, there existed some stable hydrophobic regions, which could interact with a hydrophobic reagent 8-anilino-1-naphthalene sulfonic acid, in the partially folded intermediate of Bacillus amyloliquefaciens a-amylase; and the results of fluorescence quenching using acrylamide and potassium iodide as quenchers showed the distribution of Trp residues in Bacillus amyloliquefaciens a-amylase in different denaturation solution, with the maximum number (8) of tryptophan residues in a partially folded intermediate Bacillus amyloliquefaciens a-amylase molecule could be quenched by potassium iodide; and the results of their protein electrophoresis and SEC showed that no aggregate or aggregate precipitation of Bacillus amyloliquefaciens a-amylase formed during the whole unfolding procedure of Bacillus amyloliquefaciens a-amylase induced by guanidine hydrochloride.

内源荧光光谱和荧光相图结果表明，当变性液中盐酸胍浓度约为1.0 mol/L时，芽孢杆菌a-淀粉酶的去折叠过程中出现一个部分折叠中间体，其去折叠过程符合&三态模型&；荧光探针结果表明，在溶液中盐酸胍浓度约为1.0 mol/L时，中间态芽孢杆菌a-淀粉酶分子中存在着能够与探针分子1-苯胺基-8-萘磺酸结合的稳定的疏水区域；荧光猝灭研究给出了不同程度变性的淀粉液化芽孢杆菌a-淀粉酶中的Trp的分布情况，结果表明中间态芽孢杆菌a-淀粉酶分子中能够被碘化钾猝灭的位于分子表面的色氨酸残基数目达到最大的8个；蛋白电泳和体积排阻色谱结果表明，在盐酸胍诱导的芽孢杆菌a-淀粉酶分子的整个去折叠过程中，不会以共价键或非共价键形式形成芽孢杆菌a-淀粉酶分子之间的集聚体或集聚体沉淀。

And a fluorescence molecule beacon probe is designed between upstream and downstream priers, 5' end of probe can mark fluorescence reporter group FAM, and the 3' end markes fluorescence quenching group DABCYL, and 5' end and 3' end of the probe have 6 bases which can be reflected and complemented to make fluorescence molecule beacon probe do not give out fluorescence signal in free state.

在上下游引物中间设计一条荧光分子信标探针，探针的5'端标记荧光报告基团FAM，3'端标记荧光淬灭基团DABCYL，探针的5'端和3'端有6个碱基能反折互补，使荧光分子信标探针在游离状态下不发出荧光信号。

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。