光谱分析

Two of them are β-sitosterol and β-sitosterol-3-O-β-D-glucopyranoside.

经过理化性质测定和光谱分析，确定其中He为β-谷甾醇，Hi为β-胡萝卜甙，其余产物正在鉴定中。

Calcium carbonate and soluble glass and so on were confected as alkaline antifouling agent. The Infrared Spectrometry results showed that 2275-2250 cm~(-1) diagnostic absorb wave crest in part A and 3390-3200 cm~(-1) in part B and 1730 cm~(-1) in coating film strongly proved polymers reacted just as the reacting mechanism, that means polysiloxane which offer low-surface-energy property linked Polyurethane system by —OH groups reacting with —NCO groups. Relative molar mass of part A and part B was determined by Gel Permeation Chromatography and the results were appropriate. Surface-energy was determined and results were between 33.6-47.17 mN/m and it increased when alkaline antifouling agent was put into the coating. Alkaline antifouling agent was releasing steadily when the coating film was dipped in seawater. As time gone, the pH value of seawater was increasing. Solubility parameter and results showed that there was no corrasive phenomenon between the polyethylene strand and the coating.

红外光谱分析结果表明，出现在A组分中的2275～2250cm~(-1)处的异氰酸酯特征吸收峰、B组分中的3390～3200cm~(-1)处硅羟基的特征吸收峰及出现在固化后涂膜中的1730cm~(-1)处氨基甲酸酯基团的特征吸收峰证明了涂料成膜物质交联固化符合本文的设计要求，即赋予涂膜低表面能特性的有机硅组分通过—OH基团与—NCO基团的反应已经链接到聚氨酯体系中；凝胶渗透色谱结果表明，成膜物质的A、B组分均为低分子量，符合预聚物的要求；涂膜表面能的测算结果表明，涂膜的表面能在33.6～47.17mN／m之间；加入碱式防污剂后涂膜的表面能略有升高；碱式防污剂的释放平稳，随着涂膜在海水中浸泡时间的增长，pH值有增加的趋势；用溶解度参数原则来评价涂料与网绳的涂装，结果表明，本试验研制的防污涂料对聚乙烯网绳无溶蚀作用。

The new preparation method and applications in spectral analysis of gold nanoparticles were studied in this dissertation.

本论文进行了金纳米微粒的制备新方法以及光谱分析应用研究，全文包括六个部分。

And it can be widely applied in various online spectral analysis fields.

可广泛地应用于各种在线光谱分析场合。

Recently,it is applied on spectral quantitative analysis extensively.

小波分析技术是新近出现的数学方法，近年来，在光谱分析得到广泛的应用。

Calibration transfer in multivariate calibration is one of the most important and key issues in near-infrared spectral analysis technology.

模型传递问题是近红外光谱分析技术中一个关键的共性基础技术问题。

The influence of aluminum as deoxidizant on the measurement of other elements in emission spectral analysis is discussed.

探讨了脱氧剂铝在发射光谱分析中对其它元素分析的影响。

Their spectral analysis, however, painted a different picture.

但他们的光谱分析，描绘出一幅不同的图片。

This measuring system can be used to measure soil spectral properties with a response range from 400 to 2500nm. At the same time, the paper describes measuring principles on soil composition and the measuring precision demands for the system.

本文主要介绍了基于光谱分析技术的土壤成分快速分析仪的组成结构及功能，该套分析系统可在400～2500nm 的宽范围内对土壤的光谱特性进行测量。

White spectral OCT is set up on partial spectrum analysis,the system chooses required white light source and receiving spectral. It would have more detection depth, higher resolution and improving signal to noise ratio.

建立了基于子光谱分析的白光频域OCT，该系统通过选择所需要的白光光源及其接收频段，这样既可以兼顾最大探测深度和高轴向分辨率，并且提高信噪比。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。