旋光度

利用X射线单晶衍射分析以及旋光度比较分析确定了不对称烯丙基化产物的绝对构型。

Besides , the absolute configurations of the asymmetric allylation adducts were confirmed by the single-crystal X-ray diffraction analysis and the comparation of the optical rotation .

结果：ZMS和产物XMS的熔点、旋光度测定值与文献值符合。

Results : The structure of ZMS and XMS was identified on the basis of melting point and optical rotation .

NYAB晶体的COTTON效应和旋光度估算

The cotton effects and optical activity estimation of NYAB crystal

本试验通过测定不同NaCl浓度的蔗糖液的旋光度，对Cl－的影响进行了回归分析研究。

By determining the optical activity of different NaCl concentration in sucrose solution , the regression analysis of the Cl-influence is studied .

结果表明：对照品溶液的旋光度、2-酮基-D-葡萄糖酸质量浓度和葡萄糖质量浓度之间存在良好的线性关系，R2＞0.9999；

Results indicated that a good linear relationship between optical rotation degree and the concentration of2-keto-D-gluconic acid and glucose ( R2 > 0.9999 ) .

采用离子交换法提取的苹果酸，经纸层析鉴定其hRf值为61.5，熔点为97～100℃，旋光度（？）

The malate is extracted by ion - exchange method .

对其进行纯度鉴定、分子量测定、旋光度测定、单糖组成及其摩尔比测定的结果表明：Lea与Lew是香菇多糖家族中的新成员。

The results of their purity identification , molecular number test , specific rotation test , monosaccharide components and molecular ratio test showed that Lea and Lew were two kinds of new members in shiitake polysaccharide clan .

旋光度法测定β环糊精-双氯芬酸钠的包合比

Determination of the inclusion ratio of β - cyclodextrin-diclofenac sodium polarimeter

旋光度法测定硫酸奈替米星注射液的含量

Determination of the content of Netilmicin Sulfate Injection by polarimetric analysis

此外，我们还预测了它们的旋光度。

Moreover , their rotation strengths are predicted . 2 .

光学活性肌醇及其甲基衍生物的旋光度计算

Calculation of Optical Rotation on the Optically Active Inositol and Its Methyl Derivant

方法比较旋光度法，酸碱滴定法，两种测定0.5%盐酸麻黄碱滴鼻液的方法，挑选一种最佳的含量测定方法。

METHOD Select the better method by comparing acid base titration with polarimetry .

螺旋结构和旋光度大小的关系

The Relationship Between Helix Structure and Value of Rotation

结果表明，在一定条件下盐酸左旋咪唑溶液的浓度与旋光度呈线性关系。

The result showed that it was linear relationship between concentration and mutarotation .

方法：以水为溶剂，采用旋光度测定法测定。

Methods : Betamethasone was determined by polarimetry and water was used as solvent .

旋光度测量原理的研究

Research of Measuring Principle of Optical Rotation

螺旋结构与旋光性4.螺旋理论对旋光度大小的预测

Helicoid structure and optical activity 4 prediction of the magnitude of the optical activity helicoid theory

文章由数学逻辑出发，发现了旋光度确定中存在的一些不足。

An error in measuring the optical rotation of a solutition is found based on the mathematic Logic .

旋光度法测定蔗糖水解反应速度常数是动力学的一个典型的实验。

In chemical kinetics , the measurement of velocity constant of sucrose hydrolysis by polarimetry is a typical experiment .

根据螺旋理论的规律，对常见单糖及其甲甙的旋光度进行了计算。

On the basis of the role of helix theory the rotations of the common monosaccharide and its methyl glycoside are calculated .

这两个异构体（对映体）除了旋光度有相反的符号之外，其他所有的物理性质都应该是完全相同的。

All the physical properties should be identical except for the optical rotations of the two isomers ( enantiomers ), which are of opposite sign .

研究手性试剂用量、反应时间、反应温度、溶剂极性等各种因素对转化率，以及相对旋光度的影响。

They also investigate the effects of dosage of chiral reagent , reaction time , reaction temperature , polarity of solvent on conversion ratio and relative optical activity .

按照中国药典2005年版一部的要求对广藿香折光率的测定方法在原标准的基础上进行了修订，并测定了12批广藿香油的相对密度、旋光度、折光率。

According to Chinese Pharmacopoeia 2005 edition , we amendment the Determination of refractive index base at the original standard . Relative density , optical rotation , refractive index were determined .

已知激光波长与波长计得出的旋光度存在一一对应的关系，所以，可通过旋光角度得出光源的波长。

There is a unique certain relationship between optical maser wavelength which is measured by wave meter and optical rotation . So , the optical maser wavelength can be derived by the rotation angles .

测试了它们的旋光度、和吸收光谱，含手性原子的化合物均有旋光值，十个合成产品的最高吸收波长在307～390nm之间。

The optical rotation and absorption curves have been measured and it is found that the compounds having chiral atom show optical activity and the maximum absorption wavelengths of 10 synthesized compounds are between 307 and 390 urn .

本文介绍了一种新型智能化激光旋光糖度仪，其主要特点是能够在全糖度范围内实现高精度测量，尤其是对低糖度的测量。

A new type of intelligent laser rotation saccharimeter is introduced in this paper . High accuracy measurement in the full range of saccharinity , especially the measurement of low saccharinity , is one of its outstanding features .

它们的旋光方向和旋光度大小都是由分子的立体结构所决定的。

Their rotatory direction and optical rotation are both determined by the molecular stereostructure .

螺旋结构与旋光方向和旋光度大小可以联系在一起。

The helical structure can be correlate with the rotatory direction and the value of optical rotation .

运用笔者提出的螺旋理论，通过其旋光方向和旋光度可以方便地确定秋水仙碱两个芳环间的构型和构象。

According to the helix theory proposed by the authors , the configuration and conformation between the two aromatic rings of colchicine can be conveniently deduced from its rotatory direction and value of rotation .

果葡糖浆的成分因分子结构有不对称碳原子而具有旋光特性，可用旋光度、比旋光度表示[1]，通过旋光仪测定具体数据，进而分析果糖的含量。

The components of fructose syrup have the characteristics of optical rotation due to the asymmetric carbon atoms in their molecular structures and can be expressed by optical rotation and specific optical rotation . The content of fructose is analyzed on the basis of the data detected with a polarimeter .