查询词典 fluorescence

Four anthryl lower aliphatic amine derivatives were synthesized, and DNA binding properties of these compounds were investigated by fluorescence and absorption spectra.

蒽的低级脂肪胺衍生物水溶性很好，不宜固定于PVC膜中，但它们可与核酸分子相互作用，其荧光光谱和吸收光谱发生明显变化。对于不同脂肪胺的衍生物，其作用结果不同。

An amide-based fluorescent acyclic receptor (II -1) consisting of anthryl group was synthesized, and the anion binding property was studied in CHCI3 by fluorescence, UV-vis and H NMR spectra.

合成了带有蒽荧光团的非环状酰胺受体分子Ⅱ-1，通过荧光、UV-vis光谱等研究了受体在CHCl_3中识别阴离子的性质。

When phosphine≥〓mol is added to a solution ofL1M in 〓, a strong fluorescence species L1ML is formed and a new off-onprocess is completed.The reaction of L2 with 〓 gives macrocyclic luminescencecomplexes L2M by the π-π interaction of the anthryl groups in the two L2ligands.

对其光物理性能进行研究表明由L1到L1MCu(Ⅰ、Ag、Au荧光被完全猝灭呈现荧光on-off开关现象，金属络合物作为新的荧光分子开关体系以金属离子为受体中心在溶液中对三价磷中性客体呈现off-on开关现象。

Skin ; arrector pili muscle ; sympathetic ; autoradiography ; catecholamine ; fluorescence

皮肤；立毛肌；交感神经；放射自显影；儿茶酚胺；荧光

In order to provide some scientific data for judging biological toxicity and bioavailability caused by heavy metals in sediments in Guilin, China, for the first time, the authors sampled sediments in different water areas in Guilin, and determined AVS by P-Amino dimethyl aniline dihydro chloride photometry through a set of acidification-ventilation-absorption AVS reaction unit, determined copper, lead, zinc, cadmium and nickel with tomic absorption spectrophotometry, mercury and arsenium with atomic fluorescence, and cipangopaludina cathayensis was selected as the tested species for bioavailability experiment.

首次以桂林水系沉积物为研究对象，通过酸化－吹气－吸收装置，用对氨基二甲基苯胺光度法测定沉积物中AVS含量，用原子吸收分光光度法测定SEM和间隙水中Cu、Pb、Zn、Cd、Ni含量，用原子荧光法测定Hg、As含量。

When there was no thrombin, aptamer probes could hybridize with molecular beacons in the highest degree, generating the largest fluorescence signal; when thrombin was introduced, the hybridization of molecular beacons and probes was depressed, and the depressing degree was associable with the concentration of thrombin.

没有凝血酶存在时，识体探针可以和分子信标最大程度地杂交，使得分子信标的荧光信号上升；当存在凝血酶时，与凝血酶孵育结合后的识体探针再与分子信标作用，分子信标被打开的程度有所降低，并且打开程度的降低程度与凝血酶浓度有关。

So, the training and testing speed is fast enough to monitor the atmospherical impurity in air in real time.

网络的训练和测试速度较快，可以更有效地应用于大气杂质气体的实时监测。标签光谱学非线性荧光光谱支持向量机小波变换主成分分析 spectroscopy nonlinear fluorescence spectrum support vector machine wavelet transform principal component analysis

Through this issue, we found that with 2% NaOH-NALC digested within 10 minutes in the rapid decomposition of the viscous sputum, in ensuring the effectiveness of digestion at the same time not too much because of the role of NaOH to kill bacteria (time to 20 minutes), and would not affect the role of magnetic particles; quantitative simulation of self-made through the application of clinical samples, we compared the acid-fast stain and auramine O staining of the detection limit, auramine O fluorescence staining against the backdrop of a clear dark green light acid-fast stain of Mycobacterium tuberculosis than the white background of the red eye-catching TB is more capacity, auramine O staining in the detection limit of 0.05 to 0.001 between Maxwell, higher than the acid-fast stain of Michael's 0.05 units, The former is more sensitive; In addition, the accumulation of magnetic nanoparticles of the samples after the smear, in the microscope show the number of TB was significantly higher than that of the specimens has not been enriched.

通过本次课题，我们发现用2%NaOH-NALC消化液可在10分钟内迅速裂解痰液的粘性介质，在保证消化效果的同时不会由于NaOH过强的作用杀死细菌（时间控制在20分钟内），亦不会影响磁性颗粒的作用；通过应用自制定量模拟临床标本，我们比较了抗酸染色和金胺O荧光染色的检出限，金胺O荧光染色黑暗背景下发出明显绿色亮光的结核杆菌较抗酸染色白色背景中的红色结核杆菌更容醒目，金胺O荧光染色的检出限在0.05~0.001个麦氏单位之间，高于抗酸染色的0.05个麦氏单位，前者敏感度较高；另外，经过磁性纳米颗粒富集作用后的标本涂片，在镜下显示其结核杆菌数量明显高于未经过富集的标本。

As an integration of fluorescent probes,fluorescence resonance energy transferand traditional PCR techniques,real-time PCR exceeded the limitations of traditional PCR method by allowing for high sensibility,specificity and automa- tion,and avoiding pollution in traditional PCR.

但是传统的PCR技术在具体的实际应用中出现了一些问题，如不能准确的定量、容易交叉污染、出现假阳性或假阴性的结果等。

In vivo chlorophyll fluorescence excitation spectra at 675 nm emission wavelength of six phytoplankton species belonging to dinophyta and bacillariophyta were studied.

研究了甲藻和硅藻两个门类的六种浮游植物在发射波长为675 nm处的活体叶绿素荧光激发光谱。

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。