查询词典 Wavelength

Part III, 12-benzyl dehydroabietyl thioisocyanate was synthesized from methyl 12-benzyl dehydroabietic acid, by hydrolysis, chloride, Curtius reaction to give isocyanate which was hydr- olysied to amine under acidic condition, and with the method of CS2 at last, the maximal excitat- ion wavelength was bathochromic shifted 14nm compared to DDHA-NCS.

第三部分，从12-苯甲酰基脱氢松香酸甲酯出发，经过水解，酰氯化、Curtius reaction得到异氰酸酯，在酸性条件下水解成胺，最后由二硫化碳法得到一种新的荧光衍生试剂12-苯甲酰基脱氢松香酸异硫氰酸甲酯，与DDHA-NCS相比，最大激发波长红移了14nm。

We have made benefic trails on the research of optical limiting materials with broad protective wavelength, high optical density and high transmission.

对于多波段，高光密度，高透过率的光限幅材料的研制，本论文做出有益的尝试。

As the number of fused benzo rings increases, the total energy decreases andthe maximum absorption band shiftes to longer wavelength.

当酞菁环上稠合的苯环数目依次增加时，体系总能量〓有明显的降低，最大吸收峰变化的趋势都是红移，其中ZINDO／s方法计算得到的红移值达到72nm。

The influence of acidity and concentration on fluorescence and absorption spectra were investigated. Using quinine bisulphate as a reference, fluorescence quantum yield of aesculetin in the condition of pH=9.32 was determined to be 0.13 at excitation wavelength 365nm.

考察了酸度与浓度对其荧光性质和吸光性质的影响，以硫酸奎宁为参比，测得秦皮乙素水溶液在pH=9.32，激发波长365nm条件下的荧光量子产率为0.13。

The influence of acidity on fluorescence and absorption spectra were investigated. Using quinine bisulphate as a reference, fluorescence quantum yield of aesculin in the condition of pH=4.96 was determined to be 0.76 at excitation wavelength 335nm, and in pH=9.40 was 0.80 at 375nm.

探讨了酸度与浓度对其荧光和吸光性质的影响，以硫酸奎宁为参比，测得秦皮甲素水溶液的两种强荧光型体的荧光量子产率，在pH=4.96，激发波长335nm条件下，荧光量子产率为0.76；在pH=9.40，激发波长375nm条件下，荧光量子产率为0.80。

The spectrum peaks nearby 530nm and 480 nm are corresponding with BTSD and BMD respectively. It is found from measurement that the luminescence peak from BMD is bluely shifted. The atoms of BTSD nearby dislocation core are affected by tensile stress along the Burger's vector direction leading to its band gap narrowed. In addition, there is the effect of part quantity of edge dislocation in BMD existed. Part of atoms in BMD are strained by compressive stress leading to its band gap narrowed, in other words, the wavelength from BMD is shorter than that from BTSD.

从测试结果中还发现BMD 的发光位较BTSD有所蓝移，分析认为BTSD位错芯附近原子沿伯格斯矢量方向只受到拉应力，致使禁带宽度变窄，BMD由于除了具有螺型位错的分量外还具有部分刃型位错的分量，而刃型位错中有部分原子受到压应力的作用，导致禁带宽度增宽，从而使得BMD的发光波长比BTSD短

The curve crossing probability rises gradually with the wavelength, suggesting that the conical intersection be located close to the exit channel. Br is the primary product of the photodissociation of fluorobromobenzene and bromobenzene near 266nm and it is generated through two channels.

由于势能面交叉几率随激光波长的增加有增大的趋势，我们推测势能面的交叉区域应靠近解离通道的出口。o，m，p-C6H4FBr和C6H5Br在266nm激光作用下的光解存在两种解离通道。

Methods Acid dye colorimetry was used in the determination with bromocresol green buffer solution as the color developing agent with absorbance was determined at the detection wavelength of 417 nm.

采用酸性染料比色法，以溴甲酚绿缓冲液作为生物碱的显色剂，测定样品溶液在417 nm波长处的吸收度。

Methods Acid dye colorimetry was used in the determination with bromocresol green buffer solution as the color developing agent with absorbance was determined at the detection wavelength of 417 nm.

目的 建立脑脉通有效部位中总生物碱的含量测定方法。方法采用酸性染料比色法，以溴甲酚绿缓冲液作为生物碱的显色剂，测定样品溶液在417 nm波长处的吸收度。

The optimal measuring conditions were investigated. The results indicated that the catalytic reaction to Pt and bromocresol purple was the first-order reaction. The apparent activation energy was 217.4kJ/mol and the maximum absorption wavelength of fading reaction was at 434 nm. The linear range of Pt was 0.16-4.0μg/L and the detection limit was 2.5×10^(-11)g/mL. Most of common ions had no interference with the determination, while ten multiples of Ru, Rh and Os had interference with the determination of Pt. Therefore.

选择了最佳测定条件，实验结果表明，催化反应对铂和溴甲酚紫为一级反应，反应的表观活化能为217.4kJ/mol，褪色反应的最大吸收波长为434nm，方法测定R哪的线性范围为0.16~4.0μg／L，检出限为2.5×10^(-11)g/mL，大多数常见离子不干扰测定，10倍以上的Ru，Rh和Os对测定有干扰，可在测定前分离除去。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。