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When the readily available homochiral alcohols were used as substrates, highly optically active products 4-vinyl-2-oxazolidinones were easily obtained.

在这个基础上，我们利用手性底物出发进行了手性诱导的反应研究，在两价钯的催化下能够以很好的收率得到光学纯的产物。

From Maxwell's equations, with material constitutive relation of optically active crystal and boundary conditions of electric field on the boundary between isotropic media and crystal, through coordinate transformation, the formula of the direction of refracted wave for arbitrary direction incident monochromic plane wave was derived. Furthermore, based on the unit vector of direction of refracted wave, eigen waves of electric field, electric displacement vectors and direction of energy flow can be easily obtained.

从麦克斯韦方程组出发，结合旋光晶体的物质方程以及单色平面波从各向同性介质入射到晶体界面时电场的连续性边界条件，通过晶体主轴坐标系和界面坐标系的坐标变换，推导了任意入射方向的单色平面波在晶体界面上的折射方向的求解公式，进而利用所得的折射方向求解晶体中折射波的电场本征模、电位移矢量本征模和光线方向。

We examined the reduction of COBE to optically pure-CHBE by E. coli transformants in a water monophase system reaction and discuss the possible use of this type of reaction system in industrial applications.

我们研究ㄋ在水单相体系中由COBE还原生成纯光学旳CHBE，还讨论ㄋ这种反应体系在工业应用中可能旳用途。

Through diazotization-lactonization,esterification, reduction, ether formation and double bond formation,the optically active--γ-benzyloxy methy-γ-butanolideXXIII and--γ-benzyloxy mothy-γ- butenolideXXV were preparedstarting from L-glutamic acid.

本论文采用易得的L-谷氨酸为原料，经重氮化-内酯化、酯化、还原、醚化和形成双键五步反应，合成了光学活性的化合物XXIII和XXV(Scheme 6，P.63)。

The OPI1268 optoisolator combines a high efficiency GaAlAs LED with a peak wavelength of 850nm, optically coupled to a Photologic photodiode in the output IC.

OPI1268光隔离器集成了高效率的GaAIAsLED，峰值波长为850nm，光学连接在输出集成电路的光电逻辑光电二极管上。

Oakley O ROKR features lightweight O Matter frame, buttons for controlling volume, answering/ending calls and controlling music, lenses made of optically pure PLUTONITE which filter out 100% of all UVA, UVB, UVC and harmful blue light up to 400nm, able to change the lenses, and ability to use O ROKR with iPod by adding the optional ICOMBI adapter.

厂商Oakley o ROKR的特点轻量级o问题的框架，按钮控制音量，接听/结束通话及控制用音乐，镜头作出的光学纯plutonite ，其中筛选出100 ％的所有紫外线A ，紫外线B ，紫外线C和有害的蓝灯高达400 nm ，能改变镜头，有能力使用Rokr手机与iPod加入任择icombi适配器。

Optically active propargylic alcohols are very useful and important precursors to many chiral organic compounds including natural products, pharmaceutical compounds and macromolecules.

手性丙炔醇是非常重要的合成中间体，广泛应用于天然产物、药物以及复杂大分子化合物等的合成。

Using the readily available optically active propargylic amines, the corresponding -α-chloroalkylidene-β-lactams with high ee values can be synthesized conveniently.

同时我们实现了由光学活性的炔丙基胺一步法生成光学活性的β-内酰胺化合物，这不仅在学术上而且在工业合成上都将具有非常重要的意义。

Optically'.'' active substance to a racemic form.

光学'。''活性物质转化为外消旋形式

Ultra Thin, Durable and Optically Clear Protector provides seemless protection.

超薄，耐用和光学透明保护提供无缝的保护。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。