查询词典 optical activity

The synthesis process comprises using chiral phosphorus acid as catalysis, synthesizing 2-(4, 7-indoline) compound in high efficiency and highly enantioselective by using sulfur imide and 4, 7-indoline compound, and products can be used to prepare several 2-dimethylamino indoline compounds with high optical activity through oxidation reaction.

以手性磷酸作为催化剂，由磺酰亚胺和4，7-二氢吲哚化合物可以高效率高对映选择性的合成2-甲氨基(4，7-二氢吲哚)化合物；产物可以经过氧化反应用于制备多种高光学活性的2-甲氨基吲哚化合化合物。

The two enantiomers rotate polarized light through opposite angles, canceling each other out so that the racemic mixture has no optical activity.

两种对映体使偏振光向相反的角度旋转，彼此抵销，所以外消旋混合物没有光学活性。

The two enantiomers rotate polarize d light through opposite angles, canceling each other out so that the racemic mixture has no optical activity.

两种对映体使偏振光向相反的角度旋转，彼此抵销，所以外消旋混合物没有光学活性。

Based on the optical activity of the complex formed by mannitol and ammonium molybdate,the mannitolum level in the gastrointestinal dialysis salt was determined with polarimetry.

本文根据甘露醇与钼酸铵的络合物具有旋光性这一特点，用旋光法测定胃肠透析盐中甘露醇的含量。

Showing no optical activity in polarized light .

无旋光的极化光下无光学反应的。。

A similar initiator, Et_2Zn/-Sparteine, yielded polys with threo-diisotactic -rich structure in the main chain, indicative of strongly asymmetric inducation in this system. In this case, no polymeric complexes in-site formed because of the intensive coordination between sparteine and Zn ions.The binary initiating system composed of Et_2Zn and n-BuLi combined the advantages of both metal alkyls, which gave the polymers with higher molecular weights and moderate optical activity ~(25_D =-97.1°～+24.3°.

Et_2Zn／n-BuLi二元引发体系综合了两种金属烷基化物的优点，得到了分子量相对较高(M_n=1.4x10~3～4.9×10~3)且含有手性超分子结构的光学活性聚合物；聚合物中锌含量的微小变化可引起聚合物光学活性明显改变，超分子手性与聚合物侧基的绝对构型存在关联。

The progress of the optical activity and stereochemistry of bile pigments in recent20 years is reviewed.

本文综述了20年来胆色素光学活性及其立体化学的研究进展，著重讨论了分子内和分子间相互作用对色素构象的选择性及其光活性的影响。

The main difficulty of the one-electron theory of optical activity lies in the calculation of the so-called vicinal actions.

本文在量子力學的單電子旋光理論的鄰近作用問題上，作了如下的貢獻： 1。

For the reason why optical activity of mesomer is counteracted classical answer was not convincing.

指出了内消旋体消旋原因传统解释的不合理性。

This paper measured the transmittance spectrum of Sr_3NbGa_3Si_2O_(14),a new kind of piezoelectric single crystal,from ultra-violet to visible wavelength and studied its optical activity by a novel method—measuring the transmittance spectra in Z-direction between parallel polarisers. And the rotation dispersion was fitted.

本文测定了紫外、可见光区新型压电晶体—Sr3NbGa3Si2O14的透过率，并利用一种新方法即通过测量晶体在平行偏振系统中的透过率谱研究了其旋光性，且拟合出旋光色散曲线。

Results showed that 0.01g/mL extract of Oxalis corniculata L. had obvious antimicrobial effect on S. aureus, but all extract of Oxalis corniculata L has not any antimicrobial effect on E.

结果表明，0.01g/ml的提取物对摇床培养的金黄色葡萄球菌生长具有明显的抑制作用；但各种浓度的提取物对摇床培养的大肠杆菌生长均无抑制作用。

This will be totally different from Zaro's texture mod, it will be desaturated, dirty etc.

这会和Zaro的那个材质补丁有很大不同，这边是更多的不饱和色，整个都灰扑扑的。