红移

Anthocyanidin extract in methanol showed 3 absorption peaks, at 270, 340 and 520 nm, in the UV-vis spectrum, with bathochromic and hypsochromic shift with methanol+AlCl3 and methanol+AlCl3+HCl, respectively; the ratio of the absorbance at 440 nm to that at 520 nm was 0.29. No fluorescence occurred under UV irradiance, and 5 absorption peaks occurred at 270 nm after HPLC. Five molecular ion peaks occurred on MS: 595, 381, 611, 587 and 571, respectively, and monosaccharides in the extract were identified as rhamuose and glucose on HPLC.

一品红花色素的甲醇溶液分别在270、340 和520 nm 处有 3 个吸收峰；在 440 nm 吸光度与可见光最大吸收波长 520 nm 吸光度的比值为0.29；花色素的甲醇溶液中加入AlCl3后发生红移，再加入HCl后发生蓝移；色素溶液在紫外光下无荧光；色素样品经液相色谱分离后在 270 nm检测有 5 个比较明显的吸收峰；质谱中得到 595、611、381、571 和 589 等对应的分子离子峰；花色素酸解液高效液相色谱图谱和鼠李糖、葡萄糖的出峰时间一致。

For low molar ratios of Al/Zr, a hypsochromic shift of the initial catalyst absorption band, corresponding to the monomethylation of the catalyst, was observed. Further addition of AlEt2Cl was accompanied by a continuous bathochromic shift of the maximal wavelength corresponding to the formation of more dissociated ionic active species. Then, there would be a coordination of monomer to the ionic active species.

结果表明，无论是AlEt_2Cl还是MAO，少量的助催化剂首先使催化剂发生单烷基化反应，主催化剂金属中心的最大吸收峰波长发生蓝移，而当助催化剂量进一步增加时，金属中心的最大吸收峰波长红移，单烷基取代的催化剂被大量的助催化剂夺去电子成为缺电子的阳离子活性中心，以便烯烃单体的配位插入。

The results have indicated that the introduction of electron-donating methoxy or electron-withdrawing cyano-group at the 7-position of 3-phenylcoumarins caused a bathochromic shift for both absorption and fluorescence spectra. The phenyl group at the 4-position derivative has a hypsochromic shift for both absorption and fluorescence spectra.

结果发现，在3-苯基香豆素的7-位引入给电子基团甲氧基或吸电子基团氰基均使它们的吸收光谱和荧光光谱产生红移，4-苯基香豆素的衍生物的吸收光谱和荧光光谱均产生蓝移。3-苯基香豆素衍生物与4-苯基香豆素的衍生物的基态和激发态的电子转移方向相反。

These results indicate that the wavelengths at adsorbing edge are affected by the content of cerous nitrate and the maximum absorption wavelength is about 481nm when the mole ratio of Ce/Ti is 1.0.For higher dosage of Cerium,the absorbance edge shifts to blue slightly.

结果表明，硝酸铈加入量影响催化剂的吸收带边，随用量增加，吸收带边红移至481nm(Ce/Ti=1.0，摩尔比)，继续增加用量，吸收带边轻微蓝移。

The structural analysis of precipitation has indicated that heteropoly anions in this compound still remained Keggin structure.

对该化合物的结构分析表明这些化合物中的多阴离子仍保留着其Keggin结构，但其特征振动谱带有一定的红移或蓝移。

Electron donating substituent CH〓, OCH〓 and 4, 5-benzo make λ〓 red shift, electron with -drawing substituent F, Cl and CF〓 make λ〓 hypsochromic shift; b The W〓 is bigger than relative symmetrical carbocyanines, and the ratio of 0-1＇ and 0-0＇ transition intensity increase with the increase of σ〓; c The absorption and the fluorescence spectra are mirror image, and the λ〓 have a good linear relationship; d The Stokes shift △λ〓 and the Hammett σ〓 constant have a good linear relationship.

研究了染料的光物理性质，①苯环上取代基影响染料的λ〓和摩尔消光系数，相对于H，给电子取代基CH〓、OCH〓、4，5-benzo使λ〓红移，摩尔消光系数减小，吸电子取代基F、Cl、CF〓使λ〓蓝移，摩尔消光系数减小；②化合物吸收峰的半峰宽较相应的对称染料的大，且振动肩部与最大吸收峰的强度比随σ〓增大而增大；③吸收光谱与荧光光谱呈镜像关系，且λ〓与λ〓呈良好的线性关系；④化合物的Stokes位移△λ〓与取代基的Hammett σ〓常数呈线性关系。

The light emitted from a Keplerian ring around the objects with strong gravitational field should be affected by Doppler shift, gravitational redshift and deflection of light. The line profiles for a faraway observer are dominated by these effects. In this paper the precise solutions of line profiles for the Keplerian rings in the Schwarz-schild case have been obtained by means of the kinetic equation for photons.

对于一个围绕强引力场物体作开普勒运动的环状发光物，它所发射的光线要受多普勒频移，引力红移和光线偏折等效应的作用，这种作用决定了远处观察者所看到的谱线轮廓，本文利用光子输运方程方法，求出在Schwarzschild度规中的开普勒环所发射的谱线的轮廓的精确解。

In the neighborhood of the singularities, the spectrum is redshifted at some points, and blueshifted at others.

在相位奇异点附近，一些点处的光谱发生蓝移，而另一些点处的光谱发生红移。

The UV-visible spectra of oxidized and reduced F28Y and F106Y were in agreement with the wild NGB, but the oxidized F28Y＇s Sorer band had a 2 nm blue shift, which suggested that the two mutants still remain hexa-coordinated form.

氧化型和还原型F28Y及F106Y的紫外-可见吸收光谱与野生型相似，仅氧化型F28Y的Soret带有2nm的蓝移，说明这两种突变体蛋白仍保持六配位形式。F28Y的荧光最大发射峰明显红移（340nm→347nm），表明其荧光基团更加暴露于极性环境中。

In the aqueous solution the Q band of iron phthalocyanine nanoparticles possess the properties of blue shift and red shift for about 100 nm by adjusting the concentration of surfactants on the basis of CMC with laser irradiation.

通过调节表面活性剂的浓度发现会对酞菁铁纳米颗粒胶状水溶液吸收光谱在Q带内峰值波长产生近100nm大幅度蓝移和红移的特殊现象。

Do not gum up the work by telling mother what we are going to do .

别告诉母亲我们要干的事，那会把事情搞糟的。

In recent years, application of the partial prestressed concrete beam s is developed.

近年来，随着部分预应力砼梁应用的推广，发现我国规范所采用的名义拉应力法的计算结果不稳定。