查询词典 optically denser medium

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。

A pair of FRET(frequency resonance energy transfer) donor-acceptor chromophores were simultaneously labeled on immunoglobulin G at varied ratios to prepare the spectroscopically encoded core materials,which were then housed inside a silica shell by the hydrolysis and polycondensation of tetraethoxysilane in water-in-oil microemulsion to synthesize the optically encoded silica nanomaterials.

采用两种FRET供受体荧光染料按不同的比例与载体材料人免疫球蛋白作用制备荧光编码的载体材料，以荧光编码的载体材料为内核材料，利用氨水催化硅烷化试剂在反相微乳液中水解包裹内核材料制备成一系列多色光学编码硅壳纳米材料。

Under the optimum conditions (i.e., reaction at 40℃ using hyperthermophilice esterase APE1547, 4-Cl-benzaldehyde substrate, and trichloromethane solvent), this reaction provided optically active secondary alcohol with an enantiomeric excess up to 56% and a yield up to 78%.

在最适条件（嗜热酯酶APE1547为酶源，反应温度40℃，氯仿为溶剂，4-Cl-苯甲醛为底物）下，加成反应生成的光学活性醇产率最高达78%，ee值最高可达56%。

An optically clear thermoplastic resin composition consisting essentially of: structural units derived at least one substituted or unsubstituted polycarbonate, at least greater than 30 weight percent of a substituted or unsubstituted polyester, a modified polycarbonate, an impact modifier having a refractive index in the range between about 1.51 and about 1.56 and an additive is disclosed.

公开了一种光学透明热塑性树脂组合物，该组合物基本上由以下组成：结构单元衍生的至少一种取代的或未取代的聚碳酸酯，至少大于30wt％的取代的或未取代的聚酯，改性的聚碳酸酯，折射率范围为约1.51～约1.56的抗冲改性剂和添加剂。

A compact super-radiant optically pumped D2O gas Terahertz laser was developed, it consisted of pumping source, laser cavity, measurement and vacuum system, and the length of laser cavity could be changed in the range of 80-150cm.

实验中使用了范围在80-150cm的可变长度的THz激光工作腔，实验得到了波长为385μm(对应频率约0.78THz)，脉冲宽度为100ns，峰值功率百瓦量级的THz激光脉冲信号输出。4。

A compact super-radiant optically pumped D2O gas Terahertz laser was developed, it consisted of pumping source, laser cavity, measurement and vacuum system, and the length of laser cavity could be changed in the range of 80-150cm.

实验研制了一种紧凑型工作腔长可变的超辐射光泵重水气体THz激光器系统，激光器系统由泵浦源TEA-CO2激光器、D2O气体分子THz激光工作腔、测量系统以及真空系统组成。

The azo-dyes perform an optically induced cis-trans isomerization.

氮基染料会发生光致羰基配合物异构化。

This study demonstrates optically and spatially band-tunable color cone lasers based on DDCLC cells with a photoisomerizable chiral dopant. The band-tunability is attributable to the recovery of the helix of the CLC resulted from the trans-cis isomerization induced decrease of the helical twisting power of the chiral dopant.The more the chiral cis-isomers are produced, the larger the tuned lasing band is.

本文主要藉由在胆固醇液晶射中加入可光致同素构化亲手性材，使胆固醇液晶所输出的彩色锥角射波段可光调控及空间调控，其射输出波段可调控的机制是由於当同素构化反应产生后，光致同素构化亲手性材的HTP值低并造成胆固醇液晶距改变，藉此间接调控输出的射波长，同素构化的程愈高，胆固醇液晶所输出的彩色锥角射波段可调控范围也愈大。

There are different types of personal loans available.

有许多不同类型的个人贷款优惠。

The above mentioned teaching model of spiral rising can be used to avoid rigidness in teaching.

上述螺旋式上升的教学模式，可以避免教学形成模式後的僵化现象。