查询词典 spectrum analysis

Most of water-soluble cyanine dyes have -SO3H and –COOH in their molecules, which will influence the biomolecules' functional characters. A new kind of water-soluble cyanine dyes with several cations in molecules were designed and synthesized, preparation conditions of intermediate and dyes were researched and optimized, the yield of dye is 25%. The novel kind of cyanine dye are water-soluble , spectrum characters was researched , all the dyes were charactered by 1H NMR and TOF-MS, spectrum in different solvent of novel dyes were focused on, one of the kind dyes show higher fluorescence quantum yield than the result reported. Because of several cations in the structure, it is promising when used in DNA assay and other bio-assay field.

大多数水溶性的菁类荧光染料分子结构中都带有-SO3H和-COOH等基团，过多的阴离子的引入容易造成对生物分子的功能属性的影响，本论文设计并合成了分子结构中带有多个正电荷的水溶性的一类新型菁染料，考察并且研究了中间体和染料的合成条件，最终的目标产物产率达到25％，染料通过了质谱和核磁的表征，新型的染料具有良好的水溶性，研究了新染料在多种溶剂的的光谱性质，其中一种染料的在水中的荧光量子产率比文献报道得到了提高，由于富集了正电荷，这类菁染料在DNA标记等生物中有一定应用前景。

The paper briefly introduces the prominent characters of GR-660 Car-borne γ energy spectrum measurement system , the meaning of whole energy spectrum information mining and GIS technique application in the field of data management and information extraction.

简要介绍了GR-660车载伽玛能谱测量系统的显著特点、全能谱信息挖掘的内涵和GIS技术在数据管理和信息提取中的应用。

modulation is the transmission of information to be loaded onto a high-frequency signal in the process.amplitude modulation using signal to control the rate of carrier,with its linear modulation signal changes,and maintain the same carrier frequency.in the amplitude modulation,in accordance with the strength of signals in the spectrum of different components,it is divided into ordinary am (amplitude modulation standard am),with inhibition of bilateral carrier am,the carrier single sideband suppression am.the main difference is the different methods and structure of the spectrum.

摘 要：调制是将要传送的信息装载到某一高频信号上去的过程。振幅调制是用调制信号去控制载波的幅度，使其随调制信号线性变化，而保持载波的频率不变。在幅度调制中，根据已调信号的频谱分量不同，分为普通调幅、抑制载波的双边带调幅、抑制载波的单边带调幅。它们的主要区别是产生的方法和频谱结构不同。

And Technology, Changchun 130022, ChinaAbstract : The optical design of wide spectrum WFOV LLL collimating lens and the structure of lens set are introduced. The correction of the secondary spectrum of the WFOV LLL collimating lens are described emphatically.

介绍宽光谱大视场微光准直镜的光学设计和镜组结构方案，侧重叙述大视场微光准直镜的二级光谱校正方法。

Secondly, the structure and the characteristics were analyzed by X-ray diffraction, TG-DAT, infrared spectrum and Raman spectrum.

其次，通过XRD分析、X射线荧光光谱分析、热分析和晶体振动光谱对晶体的结构和成分进行了分析。

The complexes have been characterized by IR spectrum , UV spectrum and X-ray diffraction.

铜的氨基酸配合物具有催化超氧阴离子自由基O_2~

In the second part, we analyze the problems in dealing with the formation of magnetic fields and injection of particles under the standard model of gamma-ray burst afterglows, and discuss the evolution of relativistic electrons' energy spectrum therein and their radiation spectrum and light curves.

在本论文的后半部分，我们分析了伽玛暴余辉的标准模型在处理激波中磁场形成及粒子注入方面存在的问题，讨论了其中相对论性电子能谱的演化及其辐射谱和光变曲线。

The result showed that epidemic strain of various samples had variation, and antibacterial spectrum of the antibacterials distinguished anlage antibacterial spectrum.

第三，以药物为依据，观察各类抗菌药物的抗菌谱变化。结果：各标本流行菌株有所变化，各抗菌药物的抗菌谱与其原始抗菌谱有所不同。

The higher the blackbody temperature is, the more the blue spectrum is and the less the red spectrum is.

黑体的温度越高，光谱中的蓝色成分则越多，而红色的成分则越少。

The influence of calibration constant K,spectrum region selection and spectrum prepro- cessing on the veracity of a calibration model when establishing a model for rapidly determining aroma composition in naphtha by near-infrared spectroscopy are analyzed.

在采用近红外光谱建立石脑油芳烃含量校正模型的过程中，分析讨论了校正系数K值、光谱区域选取及光谱预处理方法对校正模型准确性的影响。

The dissecting of samples in group2 were difficult. The root of pulmonary artery and ascending aorta failed to be unfolded because fibrous tissue was tough, right and left fibrous trigone were too firm to be solved by hand. Cardiac muscle fibers couldn't be stripped along myofibrillar trajectory since they were prone to break because of their friability.

组2的心脏解剖困难，表现为纤维组织坚韧，游离肺动脉非常困难；徒手无法松解左、右纤维三角，肺动脉和主动脉根部的游离非常困难；心肌纤维坚硬、质脆，解剖时容易断离成碎块，无法沿纤维走行方向剥离。

We have battled against the odds in a province that has become increasingly violent.

我们对在一个争夺日益激烈省的可能性。